SPS5000X series service manual

SPS5000X Series

Wide Range Programmable
Switching DC Power Supplies
Service Manual
SM0505X-E01ASPS5000X series service manual

Copyright and Statement
Copyright
SIGLENT TECHNOLOGIES CO., LTD. All rights reserved.

Trademark Information
SIGLENT is registered trademark of SIGLENT TECHNOLOGIES CO., LTD.

Statement● SIGLENT products are protected by patent laws in and outside of the P.R.

China.
● SIGLENT reserves the rights to change the specification and price.
● Information in this publication replaces all previous corresponding
published material.
● Contents in this manual are not allowed to be copied, extracted ortranslated in any form or by any means without SIGLENT’s permission.

SPS5000X series service manual

General Safety Summary
Carefully read the following safety precautions to avoid personal injury andprevent damage to the instrument and any products connected to it. To avoid
potential hazards, please use the instrument as specified.

To avoid fire or personal injury, use the proper power cord.
Only use the state/locally approved power cord with the instrument.

Ground the instrument.
The instrument grounds through the protective terra conductor of the powerline. To avoid electric shock, the ground conductor must be connected to theearth. Make sure the instrument is grounded correctly before connect its input
or output terminals.

Review all terminal ratings before use.
To avoid fire or electrical shock, please look over all ratings and instructions
for the instrument. Before connecting the instrument, please read the manual
carefully to gain more information about the ratings and important use
instructions for safe operation.

Do not operate with suspected failures.
If you suspect that there is damage to the instrument, halt use and contact
your local SIGLENT dealer immediately.

Do not operate in wet/damp conditions.

SPS5000X series service manual

Do not operate in an explosive atmosphere.

Keep the surface of the instrument clean and dry.

Ambient temperature
Operating: 0 ℃ to +50 ℃
Non-operation: -20 ℃ to +60 ℃
Note: Direct sunlight, radiators, and other nearby heat sources should betaken into account when assessing the ambient temperature.

Relative Humidity
Operating: 20% to 85% RH, 40 ℃, 24 hours
Non-operating: 20% to 85% RH, 65 ℃, 24 hours
AltitudeOperating: ≤ 2,000 m
Non-operating: ≤ 15,266 m

Anyone operating this equipment should refer to the instruction manual
to understand the protection afforded by the equipment. Please use theinstrument only in accordance with regulations.

SPS5000X series service manual

Safety Terms and Symbols
Terms may appear on the product:
DANGER: Indicates direct injury or hazard that could occur.
WARNING: Indicates potential injury or hazard that could occur
CAUTION: Indicates potential damage to the instrument or other property that
could occur.
Symbols may appear on the product:
This symbol is used where caution is required. Refer to theaccompanying information or documents to protect against
personal injury or damage to the instrument.
This symbol warns of a potential risk of shock hazard.
This symbol is used to denote the measurement groundconnection.
This symbol is used to denote a safety ground connection.
This symbol shows that do not put electronic equipment as
unsorted municipal waste management. Please separate
collection or contact equipment suppliers.
This symbol is used to represent an alternating current, or "AC".
CAUTION

The "CAUTION" symbol indicates a potential hazard. It calls
attention to a procedure, practice, or condition which may be
dangerous if not followed. Do not proceed until its conditions are
fully understood and met.

WARNING The "WARNING" symbol indicates a potential hazard. It calls
attention to a procedure, practice, or condition which, if not
followed, could cause bodily injury or death. If a WARNING is
indicated, do not proceed until the safety conditions are fully
understood and met.

SPS5000X series service manualContent
Copyright and Statement ....................................................................................................... 2
General Safety Summary ....................................................................................................... 3
Safety Terms and Symbols .................................................................................................... 5
Chapter 1 General Features and Specifications ................................................................ 8
Performance and Features................................................................................................ 8Specifications .................................................................................................................... 11
Prepare Information .......................................................................................................... 16
Power-on Inspection......................................................................................................... 16
Interface test ...................................................................................................................... 18
Chapter 2 Performance Verification ................................................................................... 21
Testing report .................................................................................................................... 21
Verify power regulation rate ............................................................................................ 22
Verify load regulation rate................................................................................................ 24
Verify output voltage accuracy........................................................................................ 26
Verify output current accuracy ........................................................................................ 27
Verify output ripple and noise ......................................................................................... 28
Verify the output voltage overshoot of on/off ................................................................ 29
Verify transient response recovery time ........................................................................ 29
Chapter 3 Calibration channel parameters ........................................................................ 31
Calibration instructions:.................................................................................................... 31
Open the NI Control Command interface...................................................................... 31
SCPI calibration command description ......................................................................... 32
Specific method steps: ..................................................................................................... 33
Voltage calibration ........................................................................................................ 33
Current calibration ........................................................................................................ 35
Chapter 4 Disassembly and assembly .............................................................................. 37
Safety prevention .............................................................................................................. 37
Module list .......................................................................................................................... 37
Preparation tools: .............................................................................................................. 38

SPS5000X series service manual

Teardown steps: ............................................................................................................... 38
Chapter 5 Hardware troubleshooting .............................................................................. 44
ESD Precautions............................................................................................................... 44
Required Equipment......................................................................................................... 44
MainBoard Drawing .......................................................................................................... 45
Troubleshooting flowchart ............................................................................................... 45
Check the power supply .................................................................................................. 46
Quick Guide for General Failures ................................................................................... 49
Chapter 6 Service and Support ....................................................................................... 50
Warranty ............................................................................................................................. 50
Repackaging for Shipment .............................................................................................. 50
Contact SIGLENT ............................................................................................................. 51

SPS5000X series service manual

Chapter 1 General Features and Specifications
The SIGLENT SPS5000X series is a programmable DC switching power supply
with single/multiple outputs and constant power features. The series includes
15 models, with 40 V, 50V, 80 V, 160 V rated output voltage values and 180W,
360 W, 720 W, 1080 W maximum output power levels. Users can connect 2
sets of power supplies in series or up-to 3 sets in parallel. This series of
products can meet the user's combination selection of 0 ~ 320 V, 0 ~ 270 A,
and the maximum combined power can reach up to 3240 W, meeting different
application requirements.
SPS5000X series programmable DC switching power supply is equipped witha 2.4-inch high brightness OLED display, friendly human-computer interaction
interface, and excellent performance indicators. The minimum resolution is
1mV / 1mA. The output voltage and current rise time is adjustable. It has two
output modes: Constant voltage and constant current. It also supports list
sequence programming mode. It also has over-voltage, over-current, power
limit and over-temperature protection, high-precision, low-noise, and highreliability.

Performance and Features
Rated voltage: 40 V, 50V, 80 V, 160 V
Rated output power: 180W, 360 W, 720 W, 1080 W
Constant power output, a wide range of voltage and current outputs, highefficiency switching power supply
CV, CC priority mode selection, better protection for the circuit/DUT
Fast recovery time, < 1 ms
Fast output response time, < 1 ms

SPS5000X series service manual

Voltage and current rise/fall rate adjustable
Set and read back resolution 1 mV, 1 mA
Built-in bleeder current control, the power in the output capacitor can bedischarged below the circuit/DUT safe voltage after shutdown
Support remote voltage compensation Sense function
Support local list function editing, USB import list sequence file
External analog voltage and resistance control, voltage and current
monitoring output
Overvoltage, over current, power limit, over-temperature protection, safeand reliable
2.4-inch OLED high-brightness display with a wide viewing angle of 170
degrees
Equipped with USB, LAN standard communication interface, optional USBGPIB module
With 1/2, 1/3, 1/6 rack size, flexible assembly
Embedded web server provides remote computer by web browser without
the need to install additional software on the host computerSPS5000X series service manual

The SPS series includes the following models:
Model

Output parameters

SPS5041X

40 V/30 A/360 W

SPS5042X

40 V/60 A/720 W

SPS5043X

40 V/90 A/1080 W

SPS5044X

2-channel, 40 V/30 A/360 W/CH

SPS5045X

3-channel, 40 V/30 A/360 W/CH

SPS5051X

50 V/10 A/180 W

SPS5081X

80 V/15 A/360 W

SPS5082X

80 V/30 A/720 W

SPS5083X

80 V/45 A/1080 W

SPS5084X

2-channel, 80 V/15 A/360 W/CH

SPS5085X

3-channel, 80 V/15 A/360 W/CH

SPS5161X

160 V/7.5 A/360 W

SPS5162X

160 V/15 A/720 W

SPS5163X

160 V/22.5 A/1080 W

SPS5164X

2-channel, 160 V/7.5 A/360 W/CH

SPS5165X

3-channel, 160 V/7.5 A/360 W/CHSPS5000X series service manual

Specifications
Unless otherwise noted, all specifications are guaranteed within thetemperature range of 25°C ± 5 °C with warm-up time of 30 minutes.
Model

SPS5041X

Output channel

SPS5042X

SPS5043X

SPS5044X

SPS5045X

units

2

3

CH

1

Rated output voltage

40

Rated output current

30

60

90

Total rated output power

360

720

1080

Power Ratio

V
30
720

A
1080

W

3.33

C.V ModeLine Regulation

18 (From 90 ~ 132Vac or 170 ~ 265Vac, constant load)

mV

Load Regulation

20 (From No load to Full load, constant input voltage)mV

Ripple and Noise (*1)

(Noise Bandwidth 20MHz; Ripple Bandwidth 1MHz)RIPPLE (pk to pk)

60

80

100

60

mV

RMS RIPPLE

7

11

14

7

mV

Voltage programming
Accuracy*0.1%±10

mV

1

mV

Voltage Readback Accuracy*0.1%±20mV

Voltage Readback resolution

1

mV

100ppm/°C from rated output voltage following 30-minute warm-up.

ppm/℃

0.6

V

Voltage programming
resolution

Temperature coefficient
Remote compensation
voltage (single wire)
Rise Time

10% - 90% of rated output voltage, rated resistance loadRated Load

50mS

No Load

50

mS

Fall Time

90% - 10% of rated output voltage, rated resistance loadRated Load

50mS

No Load

500mS

1Transient response time

(Time for recovery to within 0.1%

+ 10mV of its rated output against current of 50% ~ 100%.)mS

C.C ModeLine Regulation

40

75

110

40

mA

Load Regulation

40

75

110

40

mA

72

144

216

72

mA

*0.1%±30*0.1%±60*0.1%±100*0.1%±30mA

Ripple and Noiser.m.sCurrent Setting Accuracy
Current programming
resolution
Current Readback Accuracy1*0.1%±40*0.1%±70*0.1%±100mA*0.1%±40mA

SPS5000X series service manual

Current Readback resolution

1

mA

200ppm/°C from rated output current following 30-minute warm-up.

ppm/℃

Setting Range

4-44

V

Setting Accuracy± (2% of rated output voltage)

Temperature coefficient
Protection Function
OVP

OCP

The maximum output current limit of the front output terminal is 10A.
Setting Range

3-30

6-60

Setting Accuracy

9-90

3-30

A

± (2% of rated output current)

OTP

Over temperature alarm and shut off output.

Low AC Input Protection

shut off output

OPP

The over power limit is approximately 105% of the rated output power.

Rising/Falling Voltage Slew Rate:

Only applicable if V-I Mode is set to CV Slew Rate Priority.
0.1~80Rising/Falling Current Slew Rate:

V/s

Only applicable if V-I Mode is set to CC Slew Rate Priority.
0.01~60.00

0.01~120.00

0.01~180.00

0.01~60.00

A/s

0~1.5

0~0.75

0~0.5

0~1.5

Ω

Output resistance setting

Efficiency
100Vac>77%

200Vac

>79

%

Model

SPS5081X

Output channel

SPS5082X

SPS5083X

SPS5084X

SPS5085X

units

2

3

CH

1

Rated output voltage

80

Rated output current

15

30

45

Total rated output power

360

720

1080

Power Ratio

V
15
720

A
1080

W

3.33

C.V ModeLine Regulation

40 (From 90 ~ 132Vac or 170 ~ 265Vac, constant load)

mV

Load Regulation

40 (From No load to Full load, constant input voltage)mV

Ripple and Noise (*1)

(Noise Bandwidth 20MHz; Ripple Bandwidth 1MHz)RIPPLE (pk to pk)

60

80

100

60

mV

RMS RIPPLE

7

11

14

7

mV

Voltage programming
Accuracy*0.1%±10

mV

1

mV

Voltage Readback Accuracy*0.1%±20mV

Voltage Readback resolution

1

mV

100ppm/°C from rated output voltage following 30-minute warm-up.

ppm/℃

Voltage programming
resolution

Temperature coefficientSPS5000X series service manual

Remote compensation
voltage (single wire)
Rise Time

0.6

V

10% - 90% of rated output voltage, rated resistance loadRated Load

50mS

No Load

50

mS

Fall Time

90% - 10% of rated output voltage, rated resistance loadRated Load

50mS

No Load

500mS

1 (Time for recovery to within 0.1% + 10mV of its
Transient response time

rated output against current of 50% ~ 100%.)mS

C.C ModeLine Regulation

18

32

45

18

mA

Load Regulation

18

32

45

18

mA

27

54

81

27

mA

*0.1%±10*0.1%±30*0.1%±40*0.1%±10mA

Ripple and Noiser.m.sCurrent Setting Accuracy
Current programming
resolution
Current Readback Accuracy1*0.1%±20*0.1%±40

Current Readback resolution*0.1%±50mA*0.1%±20

mA

1

mA

200ppm/°C from rated output current following 30-minute warm-up.

ppm/℃

Setting Range

8-88

V

Setting Accuracy± (2% of rated output voltage)

Temperature coefficient
Protection Function
OVP

OCP
Setting Range

The maximum output current limit of the front output terminal is 10A.
1.5-16.5

3-33

Setting Accuracy

shut off output
The over power limit is approximately 105% of the rated output power.
Only applicable if V-I Mode is set to CV Slew Rate Priority.
0.1~160

Rising/Falling Current Slew Rate:

A

Over temperature alarm and shut off output.

Low AC Input Protection

Rising/Falling Voltage Slew Rate:

1.5-16.5± (2% of rated output current)

OTP

OPP

4.5-49.5

V/s

Only applicable if V-I Mode is set to CC Slew Rate Priority.
0.01~30.00

0.01~60.00

0.01~90.00

0.01~30.00

A/s

0~6

0~3

0~2

0~6

Ω

Output resistance setting

Efficiency
100Vac>77%

200Vac>79%

SPS5000X series service manual

Model

SPS5161X

Output channel

SPS5162X

SPS5163X

SPS5164X

SPS5165X

units

2

3

CH

1

Rated output voltage

160

Rated output current

7.5

15

22.5

Total rated output power

360

720

1080

Power Ratio

V
7.5
720

A
1080

W

3.33

C.V ModeLine Regulation

80 (From 90 ~ 132Vac or 170 ~ 265Vac, constant load)

mV

Load Regulation

80 (From No load to Full load, constant input voltage)mV

Ripple and Noise (*1)

(Noise Bandwidth 20MHz; Ripple Bandwidth 1MHz)RIPPLE(pk to pk)

60

80

100

60

mV

RMS RIPPLE

12

15

20

12

mV

Voltage programming
Accuracy*0.1%±100

mV

1

mV

Voltage Readback Accuracy*0.1%±100mV

Voltage Readback resolution

1

mV

100ppm/°C from rated output voltage following 30-minute warm-up.

ppm/℃

0.6

V

Voltage programming
resolution

Temperature coefficient
Remote compensation
voltage (single wire)
Rise Time

10% - 90% of rated output voltage, rated resistance loadRated Load

100

mS

No Load

100

mS

Fall Time

90% - 10% of rated output voltage, rated resistance loadRated Load

100

mS

No Load

1000mS

2 (Time for recovery to within 0.1% + 10mV of its
Transient response time

rated output against current of 50% ~ 100%.)mS

C.C ModeLine Regulation

12

19

26

12

mA

Load Regulation

12

19

26

12

mA

15

30

45

15

mA

*0.1%±5*0.1%±15*0.1%±20*0.1%±5mA

Ripple and Noiser.m.sCurrent Setting Accuracy
Current programming
resolution
Current Readback Accuracy
Current Readback resolution
Temperature coefficient

1*0.1%±5*0.1%±15*0.1%±20mA*0.1%±5mA

1mA

200ppm/°C from rated output current following 30-minute warm-up.

ppm/℃

16-176V

Protection Function
OVP
Setting RangeSPS5000X series service manual

Setting Accuracy
OCP
Setting Range± (2% of rated output voltage)
The maximum output current limit of the front output terminal is 10A.
0.75-8.25

Setting Accuracy

1.5-16.5

shut off output
The over power limit is approximately 105% of the rated output power.
Only applicable if V-I Mode is set to CV Slew Rate Priority.
0.1~320

Rising/Falling Current Slew Rate:

A

Over temperature alarm and shut off output.

Low AC Input Protection

Rising/Falling Voltage Slew Rate:

0.75-8.25± (2% of rated output current)

OTP

OPP

4.5-24.75

V/s

Only applicable if V-I Mode is set to CC Slew Rate Priority.
0.01~15.00

0.01~30.00

0.01~45.00

0.01~15.00

A/s

0~24

0~12

0~8

0~24

Ω

Output resistance setting

Efficiency
100Vac>80%

200Vac>82%

SPS5000X series service manual

Prepare Information
Before doing performance verification, you should master the following
operations to make the power work in a good state or deal with some simple
functional problems. The following contents are included in this chapter:⚫
⚫

How to perform functional checks
How to test the interface working properly

For more detailed information about the SPS’s operation, please refer to the
Quick Guide for the SPS5000X.

Power-on Inspection
Verify that the power supply is working properly by performing a power-on check.
The power supply voltage of the SPS5000X series is 100 VAC to 240 VAC.
Please select a suitable power cord to connect to the socket on the rear panelof the power supply.
Note: to avoid electric shock, make sure that the instrument is correctly
grounded to the earth before connecting AC power.

power
jack

Figure 1-1 (a) connect the power cord

SPS5000X series service manual

power
jack

Figure 1-1 (b) connect the power cord

power
jack

Figure 1-1 (c) connect the power cord
Connection methods:
1) Turn off the power switch;
2) Connect the AC input terminal to the AC power cord;
Brown/Black: The live/hot wire, connected to port L.
Yellow-green/Green: The ground wire is connected to the terminal with agrounding mark.
Blue/White: The neutral/zero line, connected to port N.
3) Install the protective cover.

European standard

American Standard

SPS5000X series service manual

Interface test
The SPS5000X series power supply supports two standard interfaces: USB
Device and LAN interface. Through these interfaces, the power supply
communicates with the outside world and implements some higher-level
functions. To ensure that the power supply is working properly, perform thefollowing interface tests.
USB Device test
Use NI-VISA to test whether the USB Device interface is working properly.
Tools:⚫

One SPS5000X series power supply;⚫

One PC with USB interface;⚫

Standard USB cable (AB type);⚫

PC software NI-VISA;

step：
1.

Install the NI-VISA on the PC.

2.

Connect the power to the PC with a USB cable.
USB
jack

Figure 1-2

3.

USB Device interface

After opening the NI-VISA to identify the SPS equipment, turn on the device
resource to send "*IDN?", return the device information and test theSPS5000X series service manual

connection successfully.

LAN test
Use Web server to test whether the LAN interface is working properly.
Tools:⚫

One SPS5000X series power supply⚫

One PC with a network cable interface⚫

One standard network cable⚫

Google Chrome downloaded on the PC

Step：
1. Install and open Google Chrome.
2. Connect the SPS power supply to the PC with a network cable.

SPS5000X series service manual

LAN
jack

Figure 1-3 LAN interface
3. Enter the SPS IP in the browser search bar and go in (See the user manualor quick guide for IP address settings).
4. The parameter configuration of SPS can be realized in the web interface.

SPS5000X series service manual

Chapter 2 Performance Verification
This chapter mainly describes how to test and verify whether the relevant
indicators of the verification power supply meet the specifications. To ensure
the accuracy of the measurements, preheat all instruments for 30 minutes.
Here are the equipment needed to perform the test:
Table 2-1 equipment required for test:
description
specification
exampleDigital multimeter6-digit half precision
Electronic load
Voltage and current poweris greater than the power
supply parameters
Connection cable
Power supply cable
Adjustable transformer
80V-240V
voltageadjustable
Oscilloscope
SDS3022

The following is a schematic diagram of the connection between the electronicload and the power supply under test:

Figure 2-1

Connect the test equipment

Testing report
In order to verify that the test results meet the specifications, please record thetest data in the test report in time.

SPS5000X series service manual

Verify power regulation rate（1）Constant voltage mode
Test Overview: The input voltage regulation rate is also called the line regulation
rate, that is, the change of the input voltage will cause the output voltage tofluctuate. Under the input voltage changes across the full input range, test thevoltage that the output voltage deviates from the setting voltage. This test
verifies the power regulation of the power supply in constant voltage mode.
Preset conditions: room temperature
Test instrument: adjustable transformer, multimeter, electronic load
Test methods and steps:(a) Take SPS5081X as an example : The input of the SPS5081X is poweredby a variable transformer, the output terminal connect to the electronic load,
and the multimeter meter pen connect to the positive and negative terminalsof the power output terminal.
(b) Turn on the power of each device, set the output to 100VAC of thetransformer. The SPS5081X works in constant voltage mode after power-on,
the electronic load set to constant current mode, and the multimeter set to
DCV gear.
(c) The output of SPS5081X set to 5V/15A. At this time, the electronic load is
set to 14.96A, and record the reading value of the multimeter.
(d) SPS5081X set to 5V/15A, 12V/15A, 24V/15A, 36V/10A, 48V/7.5A,
60V/6A, 80V/4.5A, the electronic load set 40mA below SPS5081X, and record
the reading value of the multimeter in each case.
(e) Then set the outputs of the adjustable transformers to 110VAC, 120VAC,
200VAC, 220VAC, 230VAC, 240VAC, repeat steps (c) and (d).
(f) Take the maximum value in the result to determine whether the SPS5081X
has reached the predetermined specification.
Table 2-2
Model
Vo
Vin
100V
110V
120V
200V
220V

SPS5081X
5V

12V

24V

36V

48V

60V

80V

regulationrate

SPS5000X series service manual

230V
240V

（2）Constant current mode
Test Overview: When the power supply is working in constant current mode,the change of input voltage will cause fluctuations to the output current. Under
the input voltage changes across the full input range, test the current that output
current deviates from the setting current.
Preset conditions: room temperature
Test instrument: adjustable transformer, multimeter, electronic load
Test methods and steps:(a) Take SPS5081X as an example :The input of the SPS5081X is poweredby a variable transformer, turn on the power of each device, the electronicload set to constant voltage mode, the multimeter set to the DCI gear, andthe multimeter pen connect to the electronic load in series.
(b)Set the output to 100VAC of the transformer, the output of SPS5081X set
to 2A/80V, the electronic load set to 79.96V, the SPS5081X works in constantcurrent mode after power-on, and record the reading value of the multimeter.
(c) SPS5081X set to 2A/80V, 6A/60V, 9A/40V, 12A/30V, 15A/24V, and record
the reading value of the multimeter in each case.
(d) Then set the outputs of the adjustable transformers to 110VAC, 120VAC,
200V, 220V, 230V, 240V, repeat steps (b) and (c).
(e) Take the maximum value in the result to determine whether the SPS5081X
has reached the predetermined specification.
Table 2-3
Model SPS5081X
Vo
Vin
100V
110V
120V
200V
220V
230V
240V

2A

6A

9A

12A

15A

regulationrate

SPS5000X series service manual

Verify load regulation rate（1）Constant voltage mode
Test Overview: In the case of rated input voltage, change the output load
within the full load range and test the fluctuation of the output voltage at thistime. It reflect the ability of the circuit to maintain a predetermined output
voltage when change the load.
Preset conditions: room temperature
Test instrument: adjustable transformer, multimeter, electronic load
Test methods and steps:(a) Take SPS5081X as an example :The input of the SPS5081X is set to220V by the variable transformer, the output terminal connect to the electronicload, and the multimeter meter pen connect to the positive and negative
terminals of the power output terminal in parallel.
(b) Turn on the power of each device, the electronic load set to constantcurrent mode, and the multimeter set to DCV gear.
(c) The output of SPS5081X set to 5V/15A. Turn on the output and note thereading of the multimeter when the SPS5081X is without loading.
(d)Set the current of the electronic load to 2A、6A、9A、12A、15A, andrecord the reading value of the multimeter in each case. (Note: the connection
point between the multimeter and the power supply should be fixed, otherwise
it will affect the results of the test)(e) Then set the SPS5081X to 5V/15A, 12V/15A, 24V/15A, 40V/9A, 60V/6A,
80V/4.5A in each setting, repeat step (d) separately.
(f) Take the max-min value in the calculation result to determine whether the
SPS5081X has reached the predetermined specification.
Table 2-4
Model

SPS5081X

Io 0A
Vo
5V
12V
24V
40V
60V
80V

1A

3A

4.5
A

6A

9A

12A 15A regulationrate

SPS5000X series service manual（2）Constant current mode

Test Overview: In the case of rated input voltage, change the output load
within the full load range and test the fluctuation of the output current at thistime.It reflect the ability of the circuit to maintain a predetermined output
current when change the load.
Preset conditions: room temperature
Test instrument: adjustable transformer, multimeter, electronic load
Test methods and steps:(a) Take SPS5081X as an example :The input of the SPS5081X is set to220V by the variable transformer, after turn on the power of each device, theelectronic load set to constant voltage mode, the multimeter set to the 10A
range of the DCI gear, and the multimeter pen connect to the electronic loadin series.
(b) The output of SPS5081X set to 2A/80V, turn on the output, and theelectronic load set to 79.5V，record the current reading value of themultimeter at this time.
(c) Set the voltage of the electronic load to 5V, 12V, 24V, 40V, 60V, 80V in
turn, and record the reading value of the multimeter in each setting.
(Considering that when the connected wire between the electronic load andthe SPS5081X have current flows, the voltage have wire loss, so the voltageof the electronic load should be adjusted according to the actual wire loss tomake the SPS5081X works in the constant current mode)(d) Set the SPS5081X to 2A/80V, 6A/60V, 9A/40V, 15A/24V in each setting,repeat step (b)、（c）separately.
(f) Take the max-min value in the calculation result to determine whether the
SPS5081X has reached the predetermined specification.
Table 2-5
Model
Vo
Io
2A
6A
9A
15A

SPS5081X
5V

12V

40V

60V

80V

regulationrate

SPS5000X series service manual

Verify output voltage accuracy
Test overview: In the two-wire or four-wire mode, under the rated input
voltage, test the actual output voltage and readback voltage value relative tothe set voltage; reflect the voltage accuracy of the power supply.
∆𝑉𝑜
Formula: Setting voltage accuracy =∗ 100%（5）
𝑉𝑠𝑒𝑡∆𝑉𝑏𝑎𝑐𝑘Formula: Readback voltage accuracy =∗ 100%（6）
𝑉𝑠𝑒𝑡
Preset conditions: room temperature
Test instrument: adjustable transformer, multimeter
Test methods and steps:(a) Take SPS5081X as an example :The input of the SPS5081X is set to220V by the variable transformer, the output terminal connect to the electronicload, and the multimeter meter pen connect to the positive and negative
terminals of the power output terminal in parallel.
(b) Turn on the power of each device and set the multimeter to the auto rangeof the DCV gear.
(c) The output of SPS5081X set to 80V/0.1A. Turn on the output and note thereading of the multimeter and the voltage readback value of the power when
the SPS5081X is without loading.
(d) Set the SPS5081X to 60V/0.1A, 48V/0.1A, 36V/0.1A, 24V/0.1A, 18V/0.1A,
12V/0.1A, 5V/0.1A, 1V/0.1A, In each setting, repeat step (c)separately.
(e) Calculate the corresponding setting voltage accuracy by the formula (5)and the readback voltage accuracy by the formula（6）. Take the maximum
value in the calculation result to determine whether the SPS5081X hasreached the predetermined specification.
Table 2-6
Model
Mode

2 wireSet Volt (V)
80V
60V
48V
36V
24V
18V
12V
5V

SPS5081X
Readback Volt
Measured Volt (V)(V)

Pass /FailSPS5000X series service manual

4 wire

1V
80V
60V
48V
36V
24V
18V
12V
5V
1V

Verify output current accuracy
Test overview: under the rated input voltage, test the actual output current andreadback current value relative to the set voltage; reflect the current accuracyof the power supply.
∆𝐼𝑜
Formula: Setting current accuracy =∗ 100%（7）
𝐼𝑠𝑒𝑡∆𝐼𝑏𝑎𝑐𝑘Formula: Readback current accuracy =∗ 100%（8）
𝐼𝑠𝑒𝑡
Preset conditions: room temperature
Test instrument: adjustable transformer, multimeter, electronic load
Test methods and steps:(a) Take SPS5081X as an example :The input of the SPS5081X is set to220V by the variable transformer,
turn on the power of each device, set the electronic load to constant voltage
mode, the multimeter set to the DCI gear, and the multimeter pen connect tothe electronic load in series.
(b) Set the SPS5081X to 0A/80V, turn on the output, and set the electronicload to 79.5V.record the reading of the multimeter and the current readback
value of the power.
(c) Set the SPS5081X to 0.1A/80V，1A/80V，2A/80V，4A/80V，6A/60V,
9A/40V, 12A/30V, 15A/24V, in each setting, repeat step (b)separately.
(d) Calculate the corresponding setting current accuracy by the formula (7)and the readback current accuracy by the formula（8）. Take themaximum value in the calculation result to determine whether the
SPS5081X has reached the predetermined specification.
Table 2-7

SPS5000X series service manual

Model

Set Curr (A)Measured Curr(A)

Readback Curr
(A)

Pass /
Fail

0.1A
1A
2A
4A
SPS5081X
6A
9A
12A
15A

Verify output ripple and noise
Test overview:
Ripple: The ripple is the AC component superimposed on the output of DC
voltage; The ripple voltage is the peak-to-peak value between the peaks andvalleys of the fingerprint wave; during each on and off process, the electricenergy is extracted from the input terminal to the output terminal to form aprocess of charging and discharging, thereby causing fluctuations in the
output voltage.
noise:(1) Noise voltage refers to its peak-to-peak value, in switching power supplies,
there are two main reasons for formation:(a) A high-frequency pulse train generated by the switching power supply
itself, which is caused by a sharp pulse generated when the switch is turnedon and off.
(b) Interference from external electromagnetic fields, entering the switching
power supply through radiation or entering the switching power supply throughthe power line;(2) In the switching power supply, the noise is mainly related to the switchingprocess of the system.
Preset conditions: room temperature
Test instrument: oscilloscope, common probe (with 1:10 probe),electronic load
Test environment: 220V power supply, SPS5081X set output to 24V/15A ,fullload output, electronic load set to 14.96A .
Test methods and steps:(a). The probe is grounded in the shortest grounding manner. It is
recommended to use a grounding spring well connected to the SPS5081Xsense terminal.
(b). The oscilloscope turn on the bandwidth limit of 20MHz, set the appropriate
time base and storage depth to ensure the sampling rate is 100M/s, set theprobe amplification factor to 1:1, the coupling mode is AC coupling, turn on
the statistical function, and record the valid value, peak-to-peak value,SPS5000X series service manualmaximum value, and minimum value, then save them as screenshots.
Other instructions: In order to get more accurate results, grounding should betested with reference to the following methods.

Figure2- 2 Grounding method

Verify the output voltage overshoot of on/off
Test overview:
Output overshoot: The output voltage of the power supply will generate
voltage overshoot at the moment of switching. This is mainly related toloop feedback stability. The linear power supply is used as a laboratory
power supply equipment, so it should not have overshoot strictly.
Test instrument: oscilloscope, ordinary probe
Specifications: no overshootPreset conditions: room temperature
Test environment: 220V power supply, the probe is grounded in the shortest
way.
Test methods and steps:(a). Set the oscilloscope in single trigger, select the appropriate
trigger level, and use the oscilloscope's measurement
function.
(b) When the power input is turned on or off, test the voltage
waveform of the output of the power supply under no-loading
and full-loading conditions.

Verify transient response recovery time
Test overview:
The transient response of the regulated power supply can be divided into

SPS5000X series service manual

source transient response and load transient response, and the recovery timeis generally used to predict the quality of the transient response. The transient
voltage characteristic is an inherent characteristic of the power supply itself.
There are many energy storage components inside the power supply. The
voltage adjustment needs to read back from the output, compare the standard
voltage, and adjust the switching duty cycle. Increasing the speed of thecontrol loop provides shorter transient response times. However, it is possiblethat the output is very unstable and even oscillates. If the voltage transient
response capability is poor, the voltage drop/overshoot time is too long andthe amplitude is too large, which directly causes many problems. This will
make the measurement not work properly. Therefore, if you have such an
application, you must consider a power supply that is more responsive.
Specifications: When the output current is from half load to full load, theoutput voltage is restored to within 0.1%Vset+10mV for less than 1ms.
Test instrument: oscilloscope, common probe, electronic load
Preset conditions: room temperature
Test environment: 220V power supply, the probe is grounded in the shortest
way.
Test methods and steps:(a). Turn on the power of the instrument, set the oscilloscope to AC coupling,
DC trigger mode, select the appropriate trigger level, and the probe test pointis the positive and negative terminals of the output of the power supply;(b). The SPS5081X power supply connect to the electronic load, and theelectronic load set to the dynamic test mode. The relevant settings are as
follows: set to continuous mode, set the rising and falling slopes to10A/us, setlevel A=4.5A, level B=2.25A, set the frequency to 10Hz, set the SPS5081X to
80V/5A, and the screenshot retains the test result;SPS5000X series service manual

Chapter 3 Calibration channel parameters
Calibration instructions:
The parameters to be calibrated are the voltage setting value, voltage
displaying value, current setting value and current displaying value. All
parameters are determined by linear calibration and the fitting function is
Y=aX + b. “a” is the linear coefficient and “b” is the offset. In order todetermine the parameters “a” and “b”, it is necessary to know twocorresponding points, namely (x1, y1), (x2, y2) and then find their parameters“a” and “b”. The system can implement calibration commands through a
combination of SCPI commands. Send SCPI commands through the NI
interface.
Users can control the instrument remotely by using National Instruments
Corporation's NI-VISA. NI MAX is a user interface that controls the device.

Open the NI Control Command interface
Step:
1. Open the NI MAX user port interface;
2. Click on the “device and interface” in the upper left corner, find theconnected power supply information, click on the power supply device andclick “Open VISA Test Panel”, then pop up the bullet box. As shown in Figure
3-1 below.
3. Click the “Input/Output” option of the box, enter the command in thecommand box, and click Write or Query to make the command take effect. As
shown in Figure 3-2 below.

Figure 3-1

SPS5000X series service manual

Figure 3-2
Calibration instrument: high precision multimeter, electronic load.

SCPI calibration command description
1) CALibrate:STATe <CHn>,<State>This command is used to set the calibration mode status.
CHn:
CH1 Select to calibrate channel 1
CH2 Select to calibrate channel 2
CH3 Select to calibrate channel 3
State:
1 Calibration mode is on
0 Calibration mode is off
E.g: CALibrate:STATe CH1,1
2) CALibrate:CLEAn <CHn>,<type>This command is used to clear the specified type of calibration data.
type:
VSET Setting voltage
VMEAS Measuring voltage
CSET Setting current
CMEAS Measuring current
3) CALibrate:MEAS:<type> <CHn>,<Start>,<End>,<X1>,<Y1>,<X2>,<Y2>
This command is used to calibrate readback voltage.

SPS5000X series service manual

type:
CURR
VOLT

Current
VoltageStart: the starting point for the calibration to take effectEnd: the end point for the calibration to take effect
X1: the first SPS readback value
Y1: the first multimeter measured value
X2: the second SPS readback value
Y2: the second multimeter measured value
4) CALibrate:SET:<type> <CHn>,<Start>,<End>,<X1>,<Y1>,<X2>,<Y2>
This command is used to calibrate setting voltage.
X1: the first multimeter measured value
Y1: The first value set by SPS
X2: the second multimeter measured value
Y2: The second value set by SPS
5) CALibrate:SAVE <CHn>,<type>This command is used to save the specified type of calibration data.
type:
VSET Setting voltage
VMEAS Measuring voltage
CSET Setting current
CMEAS Measuring current

Specific method steps:
Voltage calibration
Take SPS5081X channel 1 as an example. Calibration equipments are SPS
and multimeter.
(1)

Send command

CALibrate:STATe CH1,1

to enter calibration mode.

(2)

Send command

CALibrate:CLEAn VSET to clear calibration data.

(3)

Send command

CALibrate:CLEAn VMEAS to clear calibration data.

(4)

Set SPS current 1A, voltage Vset1 = 0.5V, turn on the output.

(5)

The measured value of the multimeter is Vm1, and the value displayed
by SPS is Vsps1. Record the values of Vm1 and Vsps1.

(6)

Change SPS voltage to Vset2 = 35V.

(7)

The measured value of the multimeter is Vm2, and the value displayed
by SPS is Vsps2. Record the values of Vm2 and Vsps2.

(8)

Change SPS voltage to Vset3 = 75V.

SPS5000X series service manual(9)

The measured value of the multimeter is Vm3, and the value displayed
by SPS is Vsps3. Record the values of Vm3 and Vsps3.

(10) Write the following two commands to calibrate the voltage setting value
Format: CALibrate:SET:VOLTage point1,point2,Vm1,Vset1,Vm2,Vset2(Eg:

CALibrate:SET:VOLTage 0,35,0.3227,0.5,34.636,35)

Format: CALibrate:SET:VOLTage point2,point3,Vm2,Vset2,Vm3,Vset3(Eg:

CALibrate:SET:VOLTage 35,80,34.636,35,74.428,75)

Note: if Vm2 >= point2, point2 = Vm2 + 0.1(11) Send commanddata.

CALibrate:SAVE CH1,VSET

to save the calibration(12) Write the following two commands to calibrate the voltage measured
value
Format: CALibrate:MEAS:VOLTage point1,point2,Vsps1,Vm1,Vsps2,Vm2(Eg:

CALibrate:MEAS:VOLTage 0,35,1.531,0.3227,36.318,34.636)

Format: CALibrate:MEAS:VOLTage point2,point3,Vsps2,Vm2,Vsps3,Vm3(Eg:

CALibrate:MEAS:VOLTage 35,80,36.318,34.636,76.753,74.428)

Note: if Vm2 >= point2 or Vsps2 >= point2, if Vm2 > Vsps2, thenpoint2 = Vm2 + 0.1, otherwise point2 = Vsps2 + 0.1(13) Send commanddata.

CALibrate:SAVE CH1,VMEAS(14) Send command

CALibrate:STATe CH1,0

to save the calibration

to exit calibration mode.

(15) Voltage calibration completed.
The parameters corresponding to the different SPS models with the abovecodes are shown in the following table
Mode

Rated

Vset1

Vset2

Vset3

point1point2point3

40

0.25

18

38

0

18

45

50

0.3

23

46

0

23

70

80

0.5

35

75

0

35

90

voltage(V)SPS5041X
SPS5042X
SPS5043X
SPS5044X
SPS5045X
SPS5051X
SPS5081X
SPS5082X
SPS5083X
SPS5084XSPS5000X series service manual

SPS5085X
SPS5161X
SPS5162X
SPS5163X

160

1

70

180

0

70

180

SPS5164X
SPS5165X

Current calibration
Take SPS5081X channel 1 as an example.
The used instrument is an electronic load and a high-precision multimeter isconnected in series.
(1) Send command

CALibrate:STATe CH1,1 to enter calibration mode.

(2) Send command

CALibrate:CLEAn CSET to clear calibration data.

(3) Send command

CALibrate:CLEAn CMEAS

to clear calibration data.

(4) Set the electronic load short-circuit mode, set the SPS voltage to 10V, set
SPS current Iset1 = 0.2 A, and turn on the output.
(5) The measured value of the multimeter is Im1, and the value displayed by
SPS is Isps1. Record the values of Vm1 and Vsps1.
(6) Change SPS current to Iset2 = 3A.
(7) The measured value of the multimeter is Im2, and the value displayed by
SPS is Isps2. Record the values of Im2 and Isps2.
(8) Change SPS current to Iset3 = 14A.
(9) The measured value of the multimeter is Im3, and the value displayed by
SPS is Isps3. Record the values of Im3 and Isps3.
(10) Write the following two commands to calibrate the current setting value
Format: CALibrate:SET:CURRent point1,point2,Im1,Iset1,Im2,Iset2(Eg: CALibrate:SET:CURRent 0,3,0.1934,0.2,3.314,3)
Format: CALibrate:SET:CURRent point2,point3,Im2,Iset2,Im3,Iset3(Eg: CALibrate:SET:CURRent 3,18,3.314,3,15.580,14)
Note: if Im2 >= point2, point2 = Im2 + 0.1(11) Send command CALibrate:SAVE CH1,CSETdata.

to save the calibration(12) Write the following two commands to calibrate the current measured
value
Format: CALibrate:MEAS:CURRent point1,point2, Isps1,Im1,Isps2,Im2

SPS5000X series service manual(Eg: CALibrate:MEAS:CURRent 0,3.662,0.414,0.1934,3.562,3.314)
Format: CALibrate:MEAS:CURRent point2,point3,Im2,Iset2,Im3,Iset3(Eg: CALibrate:MEAS:CURRent 3.662,18,3.562,3.314,15.976,15.590)
Note: if Im2 >= point2 or Isps2 >= point2, if Im2 > Isps2, thenpoint2 = Im2 + 0.1, otherwise point2 = Isps2 + 0.1(13) Send command CALibrate:SAVE CH1,CMEAS
calibration data.
(14) Send command CALibrate:STATe CH1,0

to save theto exit calibration mode.

(15) Current calibration completed.
The parameters corresponding to the different SPS models with the abovecodes are shown in the following table
Mode

Rated

Iset1

Iset2

Iset3

point1point2point3

7.5

0.1

1.5

7

0

1.5

9

10

0.2

2

9

0

3

18

15

0.2

3

14

0

3

18

22.5

0.3

4.5

21

0

4.5

27

30

0.4

6

28

0

6

36

SPS5083X

45

0.6

9

42

0

9

54

SPS5042X

60

0.8

12

56

0

12

64

SPS5043X

90

1.2

18

84

0

18

108

current(A)SPS5161X
SPS5164X
SPS5165X
SPS5051X
SPS5081X
SPS5084X
SPS5085X
SPS5162X
SPS5163X
SPS5041X
SPS5044X
SPS5045X
SPS5082XSPS5000X series service manual

Chapter 4 Disassembly and assemblyThis chapter mainly introduces how to disassemble and assemble the module
unit of SPS5000X series power supply. Please refer to the given steps toremove or replace the corresponding power supply unit.
The following are the main contents of this chapter:⚫ Safety considerations include safety factors to be considered when
performing disassembly operations⚫ Module list contains all detachable modular units of the power supply⚫ Preparation tools Contains the tools to be used during the disassembly
process⚫ Teardown steps Contains specific removal steps

Safety prevention
Only professional technicians can perform this disassembly step. Be sure to
disconnect all the power connections before operation, otherwise damage tothe instrument components or personal injury may result.
Avoiding electric shocks
Because there is a dangerous voltage in the electronic load, be sure to
disconnect the power supply before disassembling and wait for about threeminutes until the internal capacitor of the electronic load is discharged.
ESD Prevention
Electrostatic discharge (ESD) can cause damage to the electronics inside thepower supply. Therefore, please use anti-static measures appropriately during
the disassembly process. It is best to place the electronic load on an antistatic
mat and wear antistatic gloves.

Module list
All the module units of the power supplies are listed in the order of disassembly
as follows:
Table 4-1 list of power modules
Module serial number
1
2
3
4
5
6

Module name
Upper cover
Main control board module
Rear panel and fan
DC board and PFC board
Base plate PCBA
Front panel assemblySPS5000X series service manual

Preparation tools:
1. Anti-static gloves;
2. Torx socket head screwdriver
3. The screwdriver or long nose pliers.

Teardown steps:
This chapter mainly introduces how to remove and install the power supply ofeach module unit, please follow the steps given in below the right operation.
4.1 Remove the upper coverStep1 Remove 15 KM3 * 6 screws from the upper coverStep2 Take out the upper cover upwards

Figure 4-1

SPS5000X series service manual

4.2 Remove the main control panel module
Step1 Pull out the cable ① ② as shown in the figure.
Step2 Remove 18 plastic nails fixing the main control panel.
Step3 Remove the 3 bolts that lock the main control panel.
Step4 Remove the main control panel vertically upward.

Figure 4-2

SPS5000X series service manual

4.3 Remove the rear panel and fan
Step1 Remove 18 PM3*10 screws and 6pcs copper sheets as shown in Figure
4-3
Step2 Pull out ① ② ③ fan connecting cable
Step3 Remove four PM3 * 6 screws and four KM3 * 6 screws fixing the rearpanel
Step4 Separate the rear panel assembly horizontally
Step5 Remove the fan

Figure 4-3

SPS5000X series service manual

4.4 Remove the DC board and PFC board
Step1 Remove six PM3 * 6 screws
Step2 Remove the DC board module and PFC board module verticallyFigure 4-4

SPS5000X series service manual

4.5 Remove the base plate PCBA
Step1 Remove ① ~ ⑦ cables as shown in the figure 4-4
Step2 Remove 21 PM3 * 6 screws from the lock bottom plate and take out thebottom plate PCB upward
Step3 Remove 7 KM3 * 6 screws fixing the bottom plate and the front panel,and separate the front panel assembly from the hardware base.

Figure 4-5

SPS5000X series service manual

4.6 Remove the front panel assembly
Step1 Pull out the knob
Step2 Remove 4 KM3 * 6 screws and 2 PM3 * 6 screws fixing the front
hardware plate
Step3 Remove the key board PCB, LCD holder, LCD, key and front shell in turnFigure 4-6

SPS5000X series service manual

Chapter 5

Hardware troubleshootingThis chapter describes how to handle common hardware failures encounteredduring power operation. Before handling such fault, ensure that the power
supply meets the following prerequisites.
1. If one voltage value is found to be different from the nominal value
when measuring voltage, turn off the power immediately.
2. Turn off the power before unpacking the connecting wire of the
mainboard and the screen backlight.
3. During the process of taking apart the instrument for measurement,take measures to prevent static electricity from damaging the internal
components.

ESD Precautions
While performing any internal test of the power supply, please refer to thefollowing precautions to avoid damages to its internal modules or components
result from ESD.
⚫

Touch circuit boards by the edges as possible as you can.

⚫

Reduce handling of static-sensitive modules when necessary.

⚫

Wear a grounded antistatic wrist strap to insulate the static voltage fromyour body while touching these modules.

⚫

Operate static-sensitive modules only at static-free areas. Avoid handling
modules in areas that allow anything capable of generating or holding astatic charge.

Required Equipment
The equipment listed in the table are required to troubleshoot the power supply.
Table 5-1required equipment
equipment
Digital Multimeter

specification
Accuracy ±0.05%

exampleSiglent SDM3045X

SPS5000X series service manual

Oscilloscope

1 mV resolution
200MHz Bandwidth

Siglent SDS2102X

MainBoard Drawing
Main board is used to control and manage the whole internal system of thepower. Please refer to the following drawing to quickly locate the test points on
the main board for easy resolution of the failures you encounter.

Figure 5-1

main board drawing

Troubleshooting flowchart
The following is a flow chart of the power hardware failure. The following figure
can help you quickly locate and handle related hardware failures.

SPS5000X series service manual

Figure 5-3 Troubleshooting flowchart

Check the power supply
Make sure that the power supply is properly grounded through the protective
grounding end of the power cord. Be careful not to touch or disassemble themain board to avoid electric shock or burns. Please check the power supply
as follows:

Figure 5-4 main board drawing (part 1)

SPS5000X series service manual

In Figure 5-4 there are 4 capacitors marked with red rectangle. The power
supply voltage can be measured between two terminals of these 4 capacitors,
CD57, CB10, CD56, CD69. Voltage parameters are showed in Table 5-2.

Figure 5-5 main board drawing (part 2)
In Figure 5-5 there are 2 capacitors marked with red rectangle. The power
supply voltage can be measured between two terminals of these 2 capacitors,
C2, C5. Voltage parameters are showed in Table 5-2.

Table 5-2: Power supply voltage parameter table
Ref Ground
Capacitor
Voltage
GND1
CD57
5V
CB10
3.3V
GND2
CD56
15V
CD69
-15V
GND_EARTH
C2
5V
C5
3.3V

Error limit
±5%
±5%
±5%
±5%
±5%
±5%

CAUTION: DIFFERENT GROUND CAN NOT BE CONNECTED
If the measured voltage value is consistent with the corresponding parameterin the table, use the oscilloscope to check the waveform of the voltage. If the
waveform is flat, the power supply works well.

SPS5000X series service manual

If the measured voltage value does not match the corresponding parameter inthe table, proceed to the next step. Besides, if the power supply voltages are
all 0V, the fuse on the bottom board also should be checked (needdisassembling).
4. Turn off the SPS5000X and wait for several minutes, then measure theresistance between the capacitors mentioned above, to exclude circuit-short on
main board. If there is no circuit-short, you need to replace a new AUX board.
To ensure safety, do not disassemble the main board and the isolation sliceon the side unauthorizedly.

SPS5000X series service manual

Quick Guide for General Failures
The general hardware failures are described in the following. Reading thefollowing information can help you quickly handle some easy hardware failureswith more convenience.
1. No start-up after pressing the Power button:(1) Check if the power cord is correctly connected.
(2) Check if the power button is usable.
(3) Check whether the fuse has been burnt out. If the fuse needs to bechanged, please contact SIGLENT as soon as possible and return the
instrument to the factory to have it repaired by qualified personnel.
(4) Check if the power connector is properly connected to the main board.
(5) If the instrument still does not work normally, please contact SIGLENT.
2. The instrument starts up with a dark screen:(1) Check the connection between the screen backlight circuit board andthe mainboard.
(2) If the instrument still does not work normally, please contact SIGLENT.
3. No response after pressing any button or abnormal display of thescreen:(1) Check if the two end of the connector between the keypad circuit board
and the main board is properly connected.
(2) If the instrument still does not work normally, please contact SIGLENT.
4. Constant voltage output is not normal(1)Check if the output power of the power supply is satisfied.
(2) Check if there is a short circuit between the load and the power supply
or contacted poorly.
(3) Check if the current setting value is low.
5. Constant current output is not normal(1)Check if the output power of the power supply is satisfied.
(2)Check if the load and the power supply are open or connected poorly.
(3) Check if the voltage setting is low.

SPS5000X series service manual

Chapter 6 Service and Support
Warranty
SIGLENT warrants that the products it manufactures and sells are free fromdefects in materials and workmanship for a period of three years from the dateof shipment from an authorized SIGLENT distributor. If a product provesdefective within the respective period, SIGLENT will provide repair or
replacement as described in the complete warranty statement.
To arrange for service or obtain a copy of the complete warranty statement,
please contact your nearest SIGLENT sales and service office.
Except that as provided in this summary or the applicable warranty Statement,
SIGLENT makes no warranty of any kind, express or implied, including without
limitation the implied warranties of merchantability and fitness for a particularpurpose. In no case shall SIGLENT be liable for indirect, special orconsequential damages.

Repackaging for Shipment
If the unit needs to be shipped to SIGLENT for service or repair, be sure to:
1. Attach a tag to the unit identifying the owner and indicating the required
service or repair.
2. Place the unit in its original container with appropriate packaging material
for shipping.
3. Secure the container with strong tape or metal bands.
If the original shipping container is not available, place your unit in a container
which will ensure at least 4 inches of compressible packaging material aroundall sides for the instrument. Use static-free packaging materials to avoid
additional damage to your unit.

SPS5000X series service manual

Contact SIGLENTSIGLENT Technologies Co., Ltd
Address: Blog No.4 & No.5, Antongda Industrial Zone, 3rd Liuxian Road,
Bao'an District, Shenzhen, 518101, China.
Tel: 400-878-0807
E-mail: Service@siglent.com
Website: Http://www.siglent.com

SIGLENT Technologies America, Inc
Address: 6557 Cochran Rd, Solon, OH 44039
Tel:440-398-5800
E-mail: info@siglentna.com
Website: https://www.siglentna.com
SIGLENT Technologies Europe GmbH
SIGLENT Technologies Germany GmbH
Add: Staetzlinger Str. 70
86165 Augsburg, Germany
Tel: +49(0)-821-666 0 111 0
E-mail: info-eu@siglent.com
Website: www.siglenteu.com