---= - GOODRICH

SERVICE BULLETIN

Number 80232191-24-01

Goodrich Power Systems

Westfield Road

Pils(one LU7 9GT England

0044 1296 663000

SERVICE BULLETIN

STANDARD

ELECTRICAL POWER - PDCU B PT. NO. 80232191 AND 80231925/S3 INSPECTION/

CHECK OF THE TRANSIENT SUPPRESSION DIODES INSTALLED

INITIAL ISSUE

OF

SERVICE BULLETIN

80232191-24-01

AIRCRAFT APPLICABIUTY DAS$AULT FALCON 7X

1. Instructions

A. The Service Bulletin was written under EASA Approval No. UK.145.00B58.

B. The technical content of this document is approved under the authority of DOA No. EASA.21J.051.

Copyright in this Service Bulletin and associated documents and drawings belongs to Goodrich Power Systems and all rjghts are reserved.

No reproduction of all or part of this Service Bulletin shall be made without the prior written consent of Goodrich Power Systems.

This documenl coniains inform1:ltionthat may be confidential and its disclosure to others requires the written consent of Goodrich Power

Systems,
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GOODRICH

SERVICE BULLETIN

Number 80232191-24-01

INTENTIONALLY BLANK
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GOODRICH

SERVICE BULLETIN

Number 80232191-24-01

1. Planning Information

A. Effectivity

(1) This Service Bulletin (58) applies to the Goodrich Corporation PDCU B Cards Pt No. 80232191

and 80231925/53 installed in the Left and Right Primary Power Distribution Box (PPOS), installed

on the Falcon 7X aircraft.

B, Concurrent Requirements

(1) None.

c. Reason

(1) Dassault Aviation has performed an analysis of aircraft-level effects associated with degradation of

33 Volt Transient Voltage Suppression (TVS) Diode in the Primary Distribution Control Unit (PDCU)

and Generator Control Unit (GCU) printed circuit board assemblies.

D. Description

(1) The lVS Diodes have been categorised based on the severity of the effect. This S8 gives the

procedures necessary to identify the degradation of "Priority 1 and 2" TVS Diodes.

E. Compliance recommendation

(1) At the next removal of a PDCU B card.

F. Approval

(1) The technical con lent of this document is approved under the authority of DOA No. EASA.21J.051.

G. Manpower

(1) 0.25 Man hours

H. Weight and Balance

(1) None.

I. Electrical load Data

(1) None.

J. Software Accomplishment Summary

(1) Not applicable

K. References

(1) This SB was written using Goodrich Engineering Report PG0900400ED and rework drg 80232215

as source data.

L. Other Publications Affected

Goodrich ACMM for the PDCU-B CARD ASSEMBLY Part No. 80232190, ATA No. 24--61-09

will be revised to include the data contained in this S8.

Goodrich CMM for the Left PPDS, Part No. SW02101, ATA No. 24-61-01 will be revised to

reference the data contained in this S8

Goodrich CMM for the Right PPDS, Part No. SW02201, ATA No. 24-61-02 will be revised to

reference the data contained in this S8

M. Interchangeability or Intermixability of Parts

(1) Not applicable

Initial Issue : Aug 13/09

Revision Date . Aug 13/09

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80232191-24-01

Page 1 of 9
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GOODRICH

SERVICE BULLETIN

Number 80232191-24-01

2. Material Information

A. Material - Price and Availability

(1) Not Applicable.

B. Industry Support Program

(1) Not Applicable.

C. Material Necessary for each Component/Engine

(1) Not Applicable.

D. Spare Parts Availability

(1) Not Applicable.

E. Re-identified Parts

(1) None.

F. Tooling - Price and Availability

(1) The lools given below are necessary for this 58 and are to be procured from the sources given.

Prices and lead times for Goodrich tools are available on request.

Qty Part Number Source Keyword

1 ~ Commercially Available ESD Surface mat and

wrist band

1 TEZ-Q658 Goodrich Power Falcon multi-channel

Systems transorb tester (33V)

1 ~ Commercially Available Power supply 48V D.C.

2 ~ Locally Made Ground lead with 4mm

plug terminations

2 ~ Commercially Available Crocodile clip

3. Accomplishment Instructions

A. General

CAUTION: THE SPDB CONTAINS ITEMS THAT ARE ELECTROSTATIC-DISCHARGE SENSITIVE

(ESDS). OBEY APPROVED INDUSTRY PRECAUTIONS WHEN YOU TOUCH, REMOVE

OR INSTALL PARTS. DAMAGE CAN OCCUR FROM ELECTROSTATIC DISCHARGE.

NOTE: This S8 is intended for use on a PDCU B that is removed from the PPDB and off the aircraft.

(1) Place the PDCU B card on the ESD mat.

(2) Connect a ground lead 10 the ground sockel of the lesl-sel and a suitable earth point.

(3) Connect the DC plug from the Power Supply Unil (PSU) to the 48 volts socket on the side of the

test~sel.

(4) Connecl mains lead from the PSU 10 an applicable a.c. outlel and apply mains power.

Initial Issue : Aug 13/09

Revision Date : Aug 13/09

~: Gooorich Power Systems· ~009 All right, reserved.

80232191-24-01

Page 2 of 9
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GOODRICH

SERVICE BULLETIN

Number 80232191-24-01

(5) Push the "TEST" button on the test-set, make sure the 40 RED LEOs illuminale_

NOTE: If, the RED LEOs do not illuminate the test set is damaged.

8. Procedure

(1) Plug the board into the PDCU B connector on the test-set (Ref. Fig. 1).

NOTE: The top side of the board (the side with the main connector) must face you.

(2) Connect a ground lead 10 the sockel "GROUND" on the test-set. Use a crocodile clip and connect

the ground lead to the thermal plane of the PDCU B card (Ref. Fig. 2).

(3) Record serial number of the PDCU B card and the lest-set on the Results sheet.

(4) Push the "TEST" button on the test-set, record the status of all the LEOs on the Result Sheet

Appendix 1.

NOTE: This is 10 collect data for possible future enhancements_

(5) Release the test button.

(6) Push the "TESr button on the test-set. and make sure the circuit LEOs listed (Ref. Table 1) are all

GREEN.

Table 1 LED Pass PDCU B

Circuit No. Function RED LED GREEN LED Result

2 GLC3 B ST OFF ON PASS

•

BTC1 B ST OFF ON PASS

7 GEN1 OC OFF ON PASS

10 GEN20C OFF ON PASS

12 BTC2 B ST OFF ON PASS

13 GEN30C OFF ON PASS

,. ISOL TIED OFF ON PASS

16 BTC3 B ST OFF ON PASS

19 GLCl B ST OFF ON PASS

20 BATl GP OC IN OFF ON PASS

26 GLC1 B ST OFF ON PASS

29 EMERG ISOL B OFF ON PASS

STATUS

35 RAT WOW OFF ON PASS

39 BAT1 GP OC OUT OFF ON PASS

(7) Release the test button_

Initial Issue : Aug 13/09

Revision Date Aug 13/09

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80232191-24-01

Page 3 of 9
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GOODRICH

SERVICE BULLETIN

Number 80232191-24·01

(8) If, a RED LED is ON or a GREEN LED is OFF (Ref. Table 1), the PDCU B card must be returned 10

Goodrich Power systems.

C. Completion

(1) Disconnect and remove the ground lead and crocodile clip from the thermal plane of the POCU B

card.

(2) Remove the PDCU B card from the lest-set.

(3) Remove a.c. mains power and disconnect the PSU from the a.C. oullet..

(4) Disconnect the PSU from the 48 volts sockeL on the side of the lest-set.

(5) Remove the ground lead from the ground socket of the test-set and the earth point.

Initial Issue : Aug 13/09

Revision Date : Aug 13/09

80232191-24-01

Page 4 of 9
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GOODRICH

SERVICE BULLETIN

Number 80232191-24-01

GCU

(!)GROUND PDCU B

oTEST

PDCU A

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Test sel TE2-0658

Figure 1

~; G(){I~fich Power System•.. zoos All rights re$~rvad.

Initial Issue

Revision Date

: Aug 13109

. Aug 13/09

80232191-24-01

Page 5 of 9
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GOODRICH

SERVICE BULLETIN

Number 80232191-24~Ol

ESO plan••

PDCU B

Figure 2

INTENTIONALLY BLANK

: Aug 13/09 Initial Issue : Aug 13/09

Revision Date

@: Goodrich Power Sysroms 2000 All ri~hts ,eserv ••~.

80232191-24-01

Page 6 of 9
Appendix 1

A. Complete the Results Table.

NOTE: • Delete as necessary.

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GOODRICH

SERVICE BULLETIN

Number 80232191-24-01

Table 2 Results Table

Board type Serial No. TE2-0658, Serial No.

-

Circuit No. Function RED LED GREEN LED

1 POCU A: BUS~TIE_MAN ON' I OFF' ON' !OFF'

POCU B: GLC4_B_ST

2 POCU A: BTC1_A_ST ON' IOFF* OW I OFF'

POCU B: GLC3_B_ST

GCU: STAR

3 POCU A: GLC3_A_ST ON" IOFFT ON' I OFF'

POCU B: GALLEY _NOT_SHED

GCU: TRIP

4 POCU A: GLC2_A_ST OW I OFF* ON' I OFF'

POCU 8: BTC1_8_8T

GCU:READY2LOADA

5 POCU A: GLC'_A_ST ON" IOFf' ON' IOFF"

PDCU B: CABIN_NOT_SHED

GCU: READY2LOADB

6 POCU A: BC'_A_ST ON" IOFF" ON" I OFF'

PDCU B: 5G_DC

GCU: SPARE

7 POCU A: EXT _PWR_ON ON" f OFF" OW / OFF'

PDCU B: GEN1

-

DC

GCU: SG_RDY2LD

B PDCU A: APUC1_A_ST ON" IOFF" ON" / OFF"

PDCU B: GALLEY_OFF

GCU:FAN_OFF

9 PDCU A: STARTMODE~A_ST ON" IOFF' ON" I OFF'

PDCU B: BC1 _B_ST

GCU: GLC_AUX

10 PDCU A: GLC4_A_ST ON' IOFF' ON" I OFF'

PDCU B: GEN2_0C

GCU: GCS_ON

Initial Issue : Aug 13/09

Revision Date : Aug 13/09

@: GOOdrich Power Systems· 2009 Atl rights reserved.

80232191-24-{)1

Page 7 of 9
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GOODRICH

SERVICE BULLETIN

Number 80232191-24-01

Circuit No. Function RED LED GREEN LED

11 pocu B: GPC2~B_ST ON' IOFF' OW! OFF'

12 POCU B: BTC2_B_ST ON' I OFF' OW I OFF'

13 POCU A: SPARE_OGO ON' IOFF" OW I OFF"

POCU B: GEN3 OC

14 POCU A: BTC2_A_ST OW IOFP OW, OFF"

POCU B: ISOL_TIED

15 POCU A: WOW_A_L ON' I OFF" ON" I OFF"

POCUB: APvel _8_5T

16 pocu A: WOW_A_R OW I OFF' OW I OFF'

POCU B: BTC3_B_ST

17 POCU A: STBY _PUMP_ON ON" I OFF" OW J OFF"

POCU B: WOW_B_L

18 POCU A: BTC3_A_ST OW I OFF" ON" I OFF"

POCU B: CABIN_OFF

19 POCU A: HSCB_SBEP _ON ON" I OFF" OW I OFF"

pocu B: GLC2_B_ST

20 POCU A: GPC1 _A_5T OW I OFF' OW I OFF"

POCU 8: BAll GP_De_ IN -

21 pocu B: SPARE_DGl ON" IOFF" ON" IOFF"

22 POCU B: BC2_B_ST OW / OFF' ON" I OFF"

23 POCU B: SPARE_ CONT_ell ON" IOFF" ON" IOFF"

24 POCU 8: GPC1 _B_5T ON" {OFF" ON" {OFF"

25 PDCU B: STARTMODE_B_ST ON'" I OFF~ ON" I OFF'"

26 PDCU B: GlC1 _8_5T ON" IOFF" ON" I OFF"

27 PDCU B: B_GPU_WOW ON' / OFF" ON" / OFF"

28 PDCU 8: GEN4_0C ON" / OFF" ON" / OFF"

29 PDCU B: EMERGJ50l_B_5T ow I OFF" ow I OFF"

30 PDCU B: WOW_B_R ON" I OFF' ON' f OFF"

35 PDCU B: RAT_WOW ON' { OFF" ON" {OFF"

36 PDCU A: BAIT_HEATER ON'" ! OFF' ON'! OFF'

37 GCU: STARTMODE ON' / OFF' ON' {OFF'

38 GCU: GENOFF ON' I OFF' ON" IOFF"

Initial Issue : Aug 13/09

Revision Date : Aug 13/09

Q: Goodrich Power Systems. 2009 All rights reserved.

80232191-24-01

Page 8 of 9
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GOODRICH

SERVICE BULLETIN

Number 80232191-24-01

Circuit No_ Function RED LED GREEN LED

3. PDCU B: BAT1-GP_OC_OUT OW I OFF~ OW I OFF"

GCU: GENGe

Initial Issue : Aug 13/09

Revision Date : Aug 13109

@: GoodnCl'l Power Syslems - 2009 All rigl'llS reserved.

80232191-24-01

Page 9 of 9