Commercial

Airplane

Group

767

Service Bulletin

Number: 767-23-0164 Summary Date: May 31, 2001

ATA System: 2342

SUBJECT: COMMUNICATIONS - Interphone - Cabin Interphone System - Audio Accessory Unit And

Handset Replacement

CONCURRENT REQUIREMENTS

For airplane VS303, you cannot make the changes

given in this service bulletin unless the changes

given in Boeing Service Bulletin 767-23-0160 are

made.

BACKGROUND

This service bulletin gives instructions to replace the

pilots' and attendant handsets and, on airplanes

VR051-VR057, replace the audio accessory unit

(AAU). These changes will prevent handset audio

feedback that can occur when the handsets are

used.

An operator with the new look interior (NLI)

configuration reported feedback during handset use.

Investigation at Boeing found that when the handset

microphone gain is reduced by 3db and the AAU

gain is reduced by 9db the audio feedback does not

occur. The new handsets and AAU have the

reduced gain to prevent handset audio feedback.

ACTION (PRR B13023-1)

In the flight compartment replace the pilots' handset

on the P8 panel. In the passenger cabin, replace 5

attendant handsets.

On airplanes VR051-VR057, replace the audio

accessory unit (AAU) on the E2-5 shelf in the main

equipment center.

NOTE: On airplane VS303, the AAU is replaced by

Service Bulletin 767-23-0160.

Do a system test of the cabin interphone system.

EFFECTIVITY

Operator Airplanes

CAL VR051-VR057

LAL VS303

COMPLIANCE

No compliance time is given.

INDUSTRY SUPPORT INFORMATION

At the time of release of this service bulletin,

warranty remedies have not been determined. A

subsequent revision or Information Notice will

address the warranty remedies available, if any.

MANPOWER

Total Elapsed Time

Airplanes Man-Hours (Hours)

VR051-VR057 2.0 1.5

VS303 1.0 1.0

The changes to the AAU and handsets as given in

the Boeing Component service bulletins are not

included.

MATERIAL INFORMATION

Operator Supplied Parts/Materials

767-23-0164

Summary Page 1 of 2
BOEING SERVICE BULLETIN 767-23-0164

ON AIRPLANES VR051-VR057,

REPLACE THE ATTENDANT HANDSET

AT FIVE ATTENDANT SEAT LOCATIONS,

REPLACE THE AUDIO ACCESSORY

UNIT ON THE E2-5 SHELF

HANDSET

COMPARTMENT, REPLACE THE PILOTS'

ON THE P8 PANEL IN THE FLIGHT

FWD

MAIN EQUIPMENT CENTER

V52548

May 31, 2001 767-23-0164

Summary Page 2 of 2
Commercial

Airplane

Group

767

Service Bulletin

Number: 767-23-0164

Date: May 31, 2001

ATA System: 2342

SUBJECT: COMMUNICATIONS - Interphone - Cabin Interphone System - Audio Accessory Unit And

Handset Replacement

1. PLANNING INFORMATION

A. Effectivity

1. Airplanes

Refer to Service Bulletin Index Document D624T001, Part 3 for Airplane Variable Number, Line

Number, and Serial Number data.

This service bulletin is for the airplanes shown below. An equivalent change is on subsequent

production airplanes. Refer to PRRB13023-1 for data about this change.

Airplane Models:

767-200 767-300

IDENTIFICATION BY CUSTOMER, CUSTOMER CODE, GROUP AND VARIABLE NUMBER

CONTINENTAL AIRLINES (CAL)

VR051-VR057

LAUDA AIR (LAL)

VS303

IDENTIFICATION BY VARIABLE NUMBER

VR051-VR057 VS303

2. Spares Affected

Examine your spares supply for the parts identified in Paragraph 2.E., Existing Parts

Accountability. If any parts are found, refer to Paragraph 2.E. for the recommended use.

May 31, 2001 767-23-0164

Page 1 of 30
BOEING SERVICE BULLETIN 767-23-0164

B. Concurrent Requirements

For VS303, you cannot make the changes given in this service bulletin unless the changes given in

Boeing Service Bulletin 767-23-0160 are made.

C. Reason

This service bulletin gives instructions to replace the pilots' and attendant handsets and, on airplanes

VR051-VR057, replace the audio accessory unit (AAU). These changes will prevent handset audio

feedback that can occur when the handsets are used.

An operator with the new look interior (NLI) configuration reported feedback during handset use.

Investigation at Boeing found that when the handset microphone gain is reduced by 3db and the AAU

gain is reduced by 9db the audio feedback does not occur. The new handsets and AAU have the

reduced gain to prevent handset audio feedback.

D. Description

In the flight compartment replace the pilots' handset on the P8 panel. In the passenger cabin, replace

5 attendant handsets.

On airplanes VR051-VR057, replace the audio accessory unit (AAU) on the E2-5 shelf in the main

equipment center.

NOTE: On airplane VS303, the AAU is replaced by Service Bulletin 767-23-0160.

Do a system test of the cabin interphone system.

An evaluation form is attached to this service bulletin. Please use this form to tell us what you think

of the quality of this service bulletin.

E. Compliance

No compliance time is given.

F. Approval

This service bulletin was examined by the Federal Aviation Administration (FAA). The changes

specified in this service bulletin comply with the applicable Federal Aviation Regulations (FAR) and

are FAA approved. This service bulletin and the FAA approval were based on the airplane in its

original Boeing delivery configuration or as modified by other FAA approved Boeing changes.

If an airplane has a non-Boeing modification or repair that affects a component or system also

affected by this service bulletin, the operator is responsible for obtaining appropriate regulatory

agency approval before incorporating this service bulletin.

May 31, 2001 767-23-0164

2
BOEING SERVICE BULLETIN 767-23-0164

G. Manpower

The table below shows an estimate of the man-hours necessary to do this change for each airplane.

This estimate is for direct labor only, done by an experienced crew. Adjust the estimate with operator

man-hour data if necessary. The estimate does not include lost time. These are some examples of

lost time:

- Time to adjust to the workplace

- Time to schedule the work

- Time to examine the work

- Time to cure the materials

- Time to make the parts

- Time to find the tools.

AIRPLANES VR051-VR057

Task Number of Persons Man-Hours Elapsed Time (Hours)

Replace AAU 1 0.5 0.5

Replace

Handsets

1 0.5 0.5

Test 2 1.0 0.5

TOTAL FOR EACH AIRPLANE 2.0 1.5

AIRPLANE VS303

Task Number of Persons Man-Hours Elapsed Time (Hours)

Replace

Handsets

1 0.5 0.5

Test 1 0.5 0.5

TOTAL FOR EACH AIRPLANE 1.0 1.0

The change to the AAU as given in Boeing Component Service Bulletin 285T0001-23-09 is not

included.

The change to the handsets as given in Boeing Component Service Bulletin 285W0024-23-04 is not

included.

H. Weight and Balance Changes

None

I. Electrical Load Data

Not changed

May 31, 2001 767-23-0164

3
BOEING SERVICE BULLETIN 767-23-0164

J. References

1. Existing Data:

a. Engineering Change Memo PRRB13023-1

b. 767 Maintenance Manual (AMM) Subject 23-42-01/401

c. Boeing Standard Overhaul Practices Manual (BSOPM) 20-50-05

d. Boeing Service Bulletin 767-23-0160, "COMMUNICATION - Audio Accessory Unit

Replacement"

e. Boeing Component Service Bulletin 285T0001-23-09, "COMMUNICATION - Audio Accessory

Unit Modification"

f. Boeing Component Service Bulletin 285W0024-23-04, "COMMUNICATIONS - Interphone -

Cabin Interphone System - Cabin Attendant / Flight Deck Handset Module Assembly -

Microphone Gain Reduction"

2. Data supplied with this service bulletin:

None

3. Installation Drawings Used in the Preparation of This Service Bulletin:

None

K. Publications Changed

Publication Chapter-Section

767 Maintenance Manual 23-42, 23-51

767 Fault Isolation Manual 23-42, 23-51

767 Illustrated Parts Catalog 23-42, 25-71, 31-11

L. Interchangeability and Intermixability of Parts

Refer to Paragraph 2.E., Existing Parts Accountability, for interchangeability and intermixability

information.

May 31, 2001 767-23-0164

4
BOEING SERVICE BULLETIN 767-23-0164

2. MATERIAL INFORMATION

A. Material - Price and Availability

The operator can supply the parts and materials shown in Paragraph 2.C., Parts Necessary For Each

Airplane, and Paragraph 2.D., Parts Necessary to Change Spares. Refer to Boeing Component

Service Bulletins 285T0001-23-09 and 285W0024-23-04.

B. Industry Support Information

At the time of release of this service bulletin, warranty remedies have not been determined. A

subsequent revision or Information Notice will address the warranty remedies available, if any.

C. Parts Necessary For Each Airplane

1. Kits:

None

2. Parts and Materials Supplied by the Operator:

AIRPLANES VR051-VR057

QTY Part Number Name

1 285T0001-302 (a) Audio Accessory Unit (AAU)

5 285W0024-7L (b) Attendant Handset

1 285W0024-8A (b) Pilots' Handset

1 (c) BAC27TEX6744 Dialing Codes Marker (Pilot's Handset)

5 (c) BAC27TEX6745 Dialing Codes Marker (Attendant

Handset)

(a) To get AAU 285T0001-302, change AAU 285T0001-301 as given in Boeing

Component Service Bulletin 285T0001-23-09.

(b) To get handsets 285W0024-7L and 285W0024-8A, change handsets

285W0024-1L and 285W0024-4A as given in Boeing Component Service

Bulletin 285W0024-23-04

(c) If necessary. Refer to the Accomplishment Instructions.

AIRPLANE VS303

QTY Part Number Name

5 285W0024-7H (a) Attendant Handset

1 285W0024-8A (a) Pilots' Handset

1 (b) BAC27TEX6686 Dialing Codes Marker (Pilots' Handset)

5 (b) BAC27TEX6687 Dialing Codes Marker (Attendant

Handset)

(a) To get handsets 285W0024-7H and 285W0024-8A, change handsets

285W0024-1H and 285W0024-4A as given in Boeing Component Service

Bulletin 285W0024-23-04

(b) If necessary. Refer to the Accomplishment Instructions.

May 31, 2001 767-23-0164

5
BOEING SERVICE BULLETIN 767-23-0164

D. Parts Necessary to Change Spares

Refer to Boeing Component Service Bulletins 285T0001-23-09 and 285W0024-23-04

E. Existing Parts Accountability

The parts shown below are changed as shown in this service bulletin. Quantity (QTY) is the number

of parts changed on each airplane.

Existing Part Number RUC Name QTY New Part Number PNC RC

285T0001-301 (a) RW1 Audio Accessory Unit 1 285T0001-302 S A

285W0024-1L (a)

285W0024-1H (b)

RW2 Attendant Handset 5 285W0024-7L (a)

285W0024-7H (b)

S A

285W0024-4A RW2 Pilot's Handset 1 285W0024-8A S A

(a) Airplanes VR051-VR057

(b) Airplane VS303

RUC Recommended Use Code

RW1 - Make the change given in Boeing Component Service Bulletin 285T0001-23-09.

RW2 - Make the change given in Boeing Component Service Bulletin 285W0024-23-04.

PNC Part Number Code

S - This is the part number for the new equivalent or replacement part.

- To get a new part, use this part number in your order.

- This part is used in production.

RC Replacement Code

A - Do not use the existing part to replace the new or changed part.

F. Special Tooling - Price and Availability

None

G. Special Tooling Necessary to do this Service Bulletin

No special tools or equipment are necessary to do the change in this service bulletin. But,

maintenance and overhaul tools in the manuals given in Paragraph 1.J., References, can be

necessary. Examine operator tool supply to make sure all necessary tools are available.

May 31, 2001 767-23-0164

6
BOEING SERVICE BULLETIN 767-23-0164

3. ACCOMPLISHMENT INSTRUCTIONS

GENERAL NOTES

1. The paragraphs identified with a letter give the general work instructions and the necessary tests.

The instructions identified with numbers on the figures give the recommended sequence of steps.

2. Obey all of the warnings and cautions given in the specified manual sections.

WORK INSTRUCTIONS

A. In the flight compartment, replace the pilot's handset as shown in Figure 1.

B. In the passenger cabin, replace the attendant handsets as shown in Figure 2.

C. On airplanes VR051-VR057, do these steps to replace the audio accessory unit (AAU):

1. Open these circuit breakers and attach DO-NOT-CLOSE tags:

Location

(Panel/Position) Name Circuit Breaker

P11 / C21 PASS ADRS 2 C00558

P11 / C22 PASS ADRS 1 C00548

P11 / C24 INTERPHONE CABIN C01007

P11 / C25 DUAL PWR INTPH CAPT C01003

P11 / C26 DUAL PWR INTPH F/O C00646

P11 / C29 DUAL PWR INTPH CAPT C01004

P11 / G2 OBSERVER INTPH C01006

P11 / G30 DUAL PWR INTPH F/O C00647

2. In the main equipment center, replace the AAU in the main equipment center as shown in

Figure 3.

3. Remove the DO-NOT-CLOSE tags and close these circuit breakers:

Location

(Panel/Position) Name Circuit Breaker

P11 / C21 PASS ADRS 2 C00558

P11 / C22 PASS ADRS 1 C00548

P11 / C24 INTERPHONE CABIN C01007

P11 / C25 DUAL PWR INTPH CAPT C01003

P11 / C26 DUAL PWR INTPH F/O C00646

P11 / C29 DUAL PWR INTPH CAPT C01004

P11 / G2 OBSERVER INTPH C01006

P11 / G30 DUAL PWR INTPH F/O C00647

May 31, 2001 767-23-0164

7
BOEING SERVICE BULLETIN 767-23-0164

D. On airplanes VR051-VR057, do these steps to test the cabin interphone system:

NOTE: The functional test given below was included directly from a Boeing functional test

document. When the test was included in this service bulletin, the format, text, and step

numbers were not changed. There are two numbers associated with each instruction.

The number to the left is the sequence number which must be followed when you do the

test. The number to the right of it is the "step" number. The step number is the actual

number associated with the Boeing functional test document. The step number is

referenced when repeat instructions are required within the functional test.

1. STEP 102

CAUTION ELECTRICAL POWER

Potential Electrical Power Hazard exists when performing

this test. Use applicable Shop procedures as required.

2. STEP 200

Tools and/or Equipment

3. STEP 201

Use the following listed equipment to perform test:

- Shop Supply AR Boom Mic

4. STEP 202

VERIFY that test equipment used on this job, but not

listed in this section, is documented using the

appropriate method for recording non-conformities.

5. STEP 300

References

6. STEP 301

Wiring Diagrams

NUMBER TITLE

-------- ----------------------------------------

23-31-11 Passenger Address Voice Input Circuitry

23-31-13 Passenger Address Output Circuitry/Controls

23-42-11 Cabin Interphone

23-42-12 Cabin Interphone - Electrical Chime

7. STEP 302

Schematics

NUMBER TITLE

-------- ----------------------------------------

23-31-10 Passenger Address - Microphone and Input

Controls

23-31-30 Passenger Address - Speaker Bus 1

23-31-40 Passenger Address - Speaker Bus 2

23-42-10 Cabin Interphone - Handset Interfaces

23-42-20 Cabin Interphone - Master Call Lights

23-42-30 Cabin Interphone - Chime Outputs

23-42-40 Cabin Interphone - Pilots Call Panel

23-42-50 Cabin Interphone - Flight/Cabin/Service

23-42-60 Cabin Interphone - Passenger Address

May 31, 2001 767-23-0164

8
BOEING SERVICE BULLETIN 767-23-0164

8. STEP 400

General Information

9. STEP 404

Abbreviations and acronyms used in this test:

AAU Audio Accessory Unit

AR As Required

DCU Data Concentrator Unit

EICAS Engine Indication and Crew Alerting System

LRU Line Replaceable Unit

PA Passenger Address

PTT Push To Talk

10. STEP 500

START Test Setup

11. STEP 501

ENSURE the following circuit breakers on the P11 panel

are closed:

(3 ACP/ASP)

CB NO. LOC NOMENCLATURE

------ --- ------------------

C00548 C22 PASS. ADRS 1

C00558 C21 PASS. ADRS 2

C01007 C27 INTERPHONE-CABIN

C00646 C26 DUAL PWR INTPH F/0

C00647 G30 DUAL PWR INTPH F/O

C01003 C25 DUAL PWR INTPH CAPT

C01004 C29 DUAL PWR INTPH CAPT

C01006 G02 OBSERVER INTPH

12. STEP 502

ENSURE all handsets are securely placed in their

cradles.

13. STEP 503

STOP Test Setup

14. STEP 600

START Pilots Call Panel Test

15. STEP 601

DO dial "31" on a FWD attendant handset.

NOTE:

Ensure attendant handset is left off the cradle

until verification of flight deck indications.

16. STEP 602

VERIFY the following:

1. HI chime is heard in the flight deck

2. FWD call button illuminates on the PCP

3. CABIN CALL illuminates on the Audio Control Panels

4. CABIN CALL illuminates on the EICAS computer displays

May 31, 2001 767-23-0164

9
BOEING SERVICE BULLETIN 767-23-0164

17. STEP 603

PRESS the FWD call button on the Pilots Call Panel.

18. STEP 604

VERIFY the following:

1. FWD button extinguishes on the PCP

2. CABIN CALL extinguishes on the Audio Control Panels

3. CABIN CALL extinguishes on the EICAS computer displays

19. STEP 605

PUT the FWD handset back in the cradle.

20. STEP 606

DO dial "31" on the MID attendant handset.

NOTE:

Ensure attendant handset is left off the cradle

until verification of flight deck indications.

21. STEP 607

VERIFY the following:

1. HI chime is heard in the flight deck

2. MID call button illuminates on the PCP

3. CABIN CALL illuminates on the Audio Control Panels

4. CABIN CALL illuminates on the EICAS computer displays

22. STEP 608

PRESS the MID call button on the Pilots Call Panel.

23. STEP 609

VERIFY the following:

1. MID button extinguishes on the PCP

2. CABIN CALL extinguishes on the Audio Control Panels

3. CABIN CALL extinguishes on the EICAS computer displays

24. STEP 610

PUT the MID handset back in the cradle.

25. STEP 611

DO dial "31" on a AFT attendant handset.

NOTE:

Ensure attendant handset is left off the cradle

until verification of flight deck indications.

26. STEP 612

VERIFY the following:

1. HI chime is heard in the flight deck

2. AFT call button illuminates on the PCP

3. CABIN CALL illuminates on the Audio Control Panels

4. CABIN CALL illuminates on the EICAS computer displays

27. STEP 613

PRESS the AFT call button on the Pilots Call Panel.

May 31, 2001 767-23-0164

10
BOEING SERVICE BULLETIN 767-23-0164

28. STEP 614

VERIFY the following:

1. AFT button extinguishes on the PCP

2. CABIN CALL extinguishes on the Audio Control Panels

3. CABIN CALL extinguishes on the EICAS computer displays

29. STEP 615

PUT the AFT handset back in the cradle.

30. STEP 616

DO dial "31" on a FWD attendant handset.

NOTE:

Ensure attendant handset is left off the cradle

until verification of flight deck indications.

31. STEP 617

VERIFY the following:

1. HI chime is heard in the flight deck

2. FWD call button illuminates on the PCP

3. CABIN CALL illuminates on the Audio Control Panels

4. CABIN CALL illuminates on the EICAS computer displays

32. STEP 618

PRESS the CAB button on the CAPT Audio Control Panel.

33. STEP 619

VERIFY the following:

1. FWD button extinguishes on the PCP

2. CABIN CALL extinguishes on the Audio Control Panels

3. CABIN CALL extinguishes on the EICAS computer displays

34. STEP 620

PUT the FWD handset back in the cradle.

35. STEP 621

PRESS the ALERT call button on the Pilots Call Panel

36. STEP 622

VERIFY the following:

1. Three (3) hi/lo chimes are produced by the PA speakers

2. 4 Pink Attnd. call lights flash at FWD ATTENDANT STATIONS

3. 2 Pink Attnd. call lights flash at MID ATTENDANT STATIONS

4. 3 Pink Attnd. call lights flash at AFT ATTENDANT STATIONS

37. STEP 623

DO dial "**" on the FWD-L Attendant handset.

38. STEP 624

VERIFY the following:

1. Three (3) hi/lo chimes are produced by the PA speakers

2. The FWD-L Pink flashing Attnd. call light extinguishes

3. CABIN ALERT illuminates on the EICAS Computer Displays

May 31, 2001 767-23-0164

11
BOEING SERVICE BULLETIN 767-23-0164

39. STEP 625

OPEN the following circuit breaker on the P11 panel:

CB NO. LOC NOMENCLATURE

------ --- ------------------------

C01007 C27 INTERPHONE-CABIN

40. STEP 626

VERIFY the flashing Pink Attnd. call lights extinguish.

41. STEP 627

PUT the FWD-L handset back in the cradle.

42. STEP 628

CLOSE the following circuit breaker on the P11 panel:

CB NO. LOC NOMENCLATURE

------ --- ------------------------

C01007 C27 INTERPHONE-CABIN

43. STEP 629

PRESS the FWD call button on the Pilot Call Panel.

44. STEP 630

VERIFY a hi/lo chime is produced by the 2 electronic

chime modules at the FWD attendant station.

45. STEP 631

PRESS the MID call button on the Pilot Call Panel.

46. STEP 632

VERIFY a hi/lo chime is produced by 1 electronic

chime module at the MID attendant station.

47. STEP 633

PRESS the AFT call button on the Pilot Call Panel.

48. STEP 634

VERIFY a hi/lo chime is produced by 2 electronic

chime module at the AFT attendant station.

49. STEP 635

OPEN the following circuit breaker on the P11 panel:

CB NO. LOC NOMENCLATURE

------ --- ------------------------

C01007 C27 INTERPHONE-CABIN

50. STEP 636

VERIFY the attendant call lights extinguish.

51. STEP 637

CLOSE the following circuit breaker on the P11 panel:

CB NO. LOC NOMENCLATURE

------ --- ------------------------

C01007 C27 INTERPHONE-CABIN

May 31, 2001 767-23-0164

12
BOEING SERVICE BULLETIN 767-23-0164

52. STEP 638

STOP Pilots Call Panel Test

53. STEP 700

START Audio Control/Selector Panels Test

54. STEP 701

ADJUST the three (3) flight deck Audio Control/Selector

Panels to the following configuration:

A. CAB mic selector switch depressed.

B. BOOM/OXY switch in BOOM position.

C. All on/off volume controls "OFF" except CAB, which

is to be "ON" with volume approximately midpoint.

55. STEP 702

REMOVE a FWD attendant handset from its cradle.

56. STEP 703

SPEAK into a boom microphone/headset at each audio

control/selector panel and into the FWD attendant

handset.

NOTE:

Press the audio control/selector panel PTT switch

when speaking into the boom microphone/headset.

57. STEP 704

VERIFY good quality 2-way voice communication between

the FWD attendant handset and the boom

microphone/headsets.

58. STEP 705

PUT the FWD handset back in the cradle.

59. STEP 706

STOP Audio Control/Selector Panels Test

60. STEP 800

START Pilot Handset Test

61. STEP 801

DO dial "46" on the Flight Deck Handset.

62. STEP 802

SPEAK into the Handset Microphone.

63. STEP 803

VERIFY the announcement is NOT audible over the PA

speakers.

64. STEP 804

PRESS and hold the PTT button on the Flight Deck

Handset.

May 31, 2001 767-23-0164

13
BOEING SERVICE BULLETIN 767-23-0164

65. STEP 805

VERIFY the announcement is clearly audible over the PA

speakers.

66. STEP 806

PUT the Flight Deck handset back in the cradle.

67. STEP 807

STOP Pilot Handset Test

68. STEP 900

START Handset Audio Test

69. STEP 901

VERIFY good quality 2-way voice communication between

the FWD1-L attendant handset and each of the following

handsets:

1. FWD-R Handset

2. MID-C Handset

3. AFT-L Handset

4. AFT-R Handset

NOTE:

Return the above handsets to their cradles after

verifying 2-way communication.

70. STEP 902

ENSURE all the handsets are in their cradles.

71. STEP 903

STOP Handset Audio Test

72. STEP 1000

START Attendant to PA Test

73. STEP 1001

ENSURE the PA system can be operated by performing the

following steps at each handset:

A. Remove the handset from cradle.

B. Dial "46" on the handset.

C. Speak into the handset.

D. Verify announcement is not heard over the PA system.

E. Push and hold the PTT button on the handset.

F. Verify announcement is clearly audible over

the PA system.

G. Replace the handset in cradle.

74. STEP 1002

VERIFY that the previous steps were performed and PASSED

for the following handsets:

1. FWD-L Handset

2. FWD-R Handset

3. MID-C Handset

4. AFT-L Handset

5. AFT-R Handset

May 31, 2001 767-23-0164

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BOEING SERVICE BULLETIN 767-23-0164

75. STEP 1003

STOP Attendant to PA Test

76. STEP 1100

START AAU Handset Port Verification Test

77. STEP 1101

ENSURE correct handset port interface by performing the

following steps for all cabin attendant handsets:

A. Remove the handset from cradle.

B. DO dial the dial code assigned to the handsets station.

C. Verify the PINK Attnd. call lights at the handset's

station do not illuminate.

D. Replace the handset in cradle.

NOTE:

1. Assigned Dial Codes for handset locations are as

follows:

FWD-L = DOOR 1 L 11

FWD-R = DOOR 1 R 21

MID-C = OVERWING 34

AFT-L = DOOR 2 L 12

AFT-R = DOOR 2 22

2. Call light(s) will illuminate at the opposite

station for FWD and AFT handsets including Repeater

Bar Call Lights.

78. STEP 1102

VERIFY that the previous steps were performed and PASSED

for the listed handset:

1. FWD-L Handset

2. FWD-R Handset

3. MID-C Handset

4. AFT-L Handset

5. AFT-R Handset

79. STEP 1103

STOP AAU Handset Port Verification Test

May 31, 2001 767-23-0164

15
BOEING SERVICE BULLETIN 767-23-0164

E. On airplane VS303, do these steps to test the cabin interphone system:

NOTE: The functional test given below was included directly from a Boeing functional test

document. When the test was included in this service bulletin, the format, text, and step

numbers were not changed. There are two numbers associated with each instruction.

The number to the left is the sequence number which must be followed when you do the

test. The number to the right of it is the "step" number. The step number is the actual

number associated with the Boeing functional test document. The step number is

referenced when repeat instructions are required within the functional test.

1. STEP 102

CAUTION ELECTRICAL POWER

Potential Electrical Power Hazard exists when performing

this test. Use applicable Shop procedures as required.

2. STEP 200

Tools and/or Equipment

3. STEP 201

Use the following listed equipment to perform test:

- Shop Supply AR Boom Mic

4. STEP 202

VERIFY that test equipment used on this job, but not

listed in this section, is documented using the

appropriate method for recording non-conformities.

5. STEP 300

References

6. STEP 301

Wiring Diagrams

NUMBER TITLE

-------- ----------------------------------------

23-31-11 Passenger Address Voice Input Circuitry

23-31-13 Passenger Address Output Circuitry/Controls

23-42-11 Cabin Interphone

23-42-12 Cabin Interphone - Electrical Chime

7. STEP 302

Schematics

NUMBER TITLE

-------- ----------------------------------------

23-31-10 Passenger Address - Microphone and Input

Controls

23-31-30 Passenger Address - Speaker Bus 1

23-31-40 Passenger Address - Speaker Bus 2

23-42-10 Cabin Interphone - Handset Interfaces

23-42-20 Cabin Interphone - Master Call Lights

23-42-30 Cabin Interphone - Chime Outputs

23-42-40 Cabin Interphone - Pilots Call Panel

23-42-50 Cabin Interphone - Flight/Cabin/Service

23-42-60 Cabin Interphone - Passenger Address

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BOEING SERVICE BULLETIN 767-23-0164

8. STEP 400

General Information

9. STEP 404

Abbreviations and acronyms used in this test:

AAU Audio Accessory Unit

AR As Required

DCU Data Concentrator Unit

EICAS Engine Indication and Crew Alerting System

LRU Line Replaceable Unit

PA Passenger Address

PTT Push To Talk

10. STEP 500

START Test Setup

11. STEP 501

ENSURE the following circuit breakers on the P11 panel

are closed:

(4 ACP/ASP)

CB NO. LOC NOMENCLATURE

------ --- ------------------

C00548 C22 PASS. ADRS 1

C00558 C21 PASS. ADRS 2

C00551 C24 INTERPHONE-CABIN

C00648 C26 DUAL PWR INTPH F/0

C00649 G30 DUAL PWR INTPH F/O

C00644 C25 DUAL PWR INTPH CAPT

C00645 C29 DUAL PWR INTPH CAPT

12. STEP 502

ENSURE all handsets are securely placed in their cradles.

13. STEP 503

STOP Test Setup

14. STEP 600

START Pilots Call Panel Test

15. STEP 601

DO dial "31" on a FWD attendant handset.

NOTE:

Ensure attendant handset is left off the cradle

until verification of flight deck indications.

16. STEP 602

VERIFY the following:

1. HI chime is heard in the flight deck

2. FWD call button illuminates on the PCP

3. CABIN CALL illuminates on the Audio Select Panels

4. CABIN CALL illuminates on the EICAS computer displays

17. STEP 603

PRESS the FWD call button on the Pilots Call Panel.

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BOEING SERVICE BULLETIN 767-23-0164

18. STEP 604

VERIFY the following:

1. FWD button extinguishes on the PCP

2. CABIN CALL extinguishes on the Audio Select Panels

3. CABIN CALL extinguishes on the EICAS computer displays

19. STEP 605

PUT the FWD handset back in the cradle.

20. STEP 606

DO dial "31" on the MID attendant handset.

NOTE:

Ensure attendant handset is left off the cradle

until verification of flight deck indications.

21. STEP 607

VERIFY the following:

1. HI chime is heard in the flight deck

2. MID call button illuminates on the PCP

3. CABIN CALL illuminates on the Audio Select Panels

4. CABIN CALL illuminates on the EICAS computer displays

22. STEP 608

PRESS the MID call button on the Pilots Call Panel.

23. STEP 609

VERIFY the following:

1. MID button extinguishes on the PCP

2. CABIN CALL extinguishes on the Audio Select Panels

3. CABIN CALL extinguishes on the EICAS computer displays

24. STEP 610

PUT the MID handset back in the cradle.

25. STEP 611

DO dial "31" on a AFT attendant handset.

NOTE:

Ensure attendant handset is left off the cradle

until verification of flight deck indications.

26. STEP 612

VERIFY the following:

1. HI chime is heard in the flight deck

2. AFT call button illuminates on the PCP

3. CABIN CALL illuminates on the Audio Select Panels

4. CABIN CALL illuminates on the EICAS computer displays

27. STEP 613

PRESS the AFT call button on the Pilots Call Panel.

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BOEING SERVICE BULLETIN 767-23-0164

28. STEP 614

VERIFY the following:

1. AFT button extinguishes on the PCP

2. CABIN CALL extinguishes on the Audio Select Panels

3. CABIN CALL extinguishes on the EICAS computer displays

29. STEP 615

PUT the AFT handset back in the cradle.

30. STEP 616

PRESS the ALERT call button on the Pilots Call Panel

31. STEP 617

VERIFY the following:

1. Three (3) hi/lo chimes are produced by the PA speakers

2. 3 Pink Attnd. call lights flash at ATTENDANT STATIONS

3. 3 Pink Attnd. call lights flash at ATTENDANT STATIONS

4. 3 Pink Attnd. call lights flash at ATTENDANT STATIONS

32. STEP 618

DO dial "**" on the FWD-L Attendant handset.

33. STEP 619

VERIFY the following:

1. Three (3) hi/lo chimes are produced by the PA speakers

2. The FWD-L Pink flashing Attnd. call light extinguishes

3. CABIN ALERT illuminates on the EICAS Computer Displays

34. STEP 620

OPEN the following circuit breaker on the P11 panel:

CB NO. LOC NOMENCLATURE

------ --- ------------------------

C01007 C24 INTERPHONE-CABIN SERVICE

35. STEP 621

VERIFY the flashing Pink Attnd. call lights extinguish.

36. STEP 622

CLOSE the following circuit breaker on the P11 panel:

CB NO. LOC NOMENCLATURE

------ --- ------------------------

C01007 C24 INTERPHONE-CABIN SERVICE

37. STEP 623

PRESS the FWD call button on the Pilot Call Panel.

38. STEP 624

VERIFY a hi/lo chime is produced by the 2 electronic

chime modules at the FWD attendant station.

39. STEP 625

PRESS the MID call button on the Pilot Call Panel.

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BOEING SERVICE BULLETIN 767-23-0164

40. STEP 626

VERIFY a hi/lo chime is produced by 1 electronic

chime module at the MID attendant station.

41. STEP 627

PRESS the AFT call button on the Pilot Call Panel.

42. STEP 628

VERIFY a hi/lo chime is produced by 2 electronic

chime module at the AFT attendant station.

43. STEP 629

OPEN the following circuit breaker on the P11 panel:

CB NO. LOC NOMENCLATURE

------ --- ------------------------

C01007 C24 INTERPHONE-CABIN SERVICE

44. STEP 630

VERIFY the attendant call lights extinguish.

45. STEP 631

CLOSE the following circuit breaker on the P11 panel:

CB NO. LOC NOMENCLATURE

------ --- ------------------------

C02007 C24 INTERPHONE-CABIN SERVICE

46. STEP 632

STOP Pilots Call Panel Test

47. STEP 700

START Audio Control/Selector Panels Test

48. STEP 701

ADJUST the four (4) flight deck Audio Control/Selector

Panels to the following configuration:

A. CAB mic selector switch depressed.

B. BOOM/OXY switch in BOOM position.

C. All on/off volume controls "OFF" except CAB, which

is to be "ON" with volume approximately midpoint.

49. STEP 702

REMOVE a FWD attendant handset from its cradle.

50. STEP 703

SPEAK into a boom microphone/headset at each audio

control/selector panel and into the FWD attendant

handset.

NOTE:

Press the audio control/selector panel PTT switch

when speaking into the boom microphone/headset.

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BOEING SERVICE BULLETIN 767-23-0164

51. STEP 704

VERIFY good quality 2-way voice communication between

the FWD attendant handset and the boom microphone/headsets.

52. STEP 705

STOP Audio Control/Selector Panels Test

53. STEP 800

START Pilot Handset Test

54. STEP 801

DO dial "46" on the Flight Deck Handset.

55. STEP 802

SPEAK into the Handset Microphone.

56. STEP 803

VERIFY the announcement is NOT audible over the PA

speakers.

57. STEP 804

PRESS and hold the PTT button on the Flight Deck

Handset.

58. STEP 805

VERIFY the announcement is clearly audible over the PA

speakers.

59. STEP 806

STOP Pilot Handset Test

60. STEP 900

START Handset Audio Test

61. STEP 901

VERIFY good quality 2-way voice communication between

the FWD1-L attendant handset and each of the following

handsets:

1. FWD-R Handset

2. MID-C Handset

3. AFT-L Handset

4. AFT-R Handset

NOTE:

Return the above handsets to their cradles after

verifying 2-way communication.

62. STEP 902

ENSURE all the handsets are in their cradles.

63. STEP 903

STOP Handset Audio Test

64. STEP 1000

START Attendant to PA Test

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BOEING SERVICE BULLETIN 767-23-0164

65. STEP 1001

ENSURE the PA system can be operated by performing the

following steps at each handset:

A. Remove the handset from cradle.

B. Dial "46" on the handset.

C. Speak into the handset.

D. Verify announcement is not heard over the PA system.

E. Push and hold the PTT button on the handset.

F. Verify announcement is clearly audible over

the PA system.

G. Replace the handset in cradle.

66. STEP 1002

VERIFY that the previous steps were performed and PASSED

for the following handsets:

1. FWD-L Handset

2. FWD-R Handset

3. MID-C Handset

4. AFT-L Handset

5. AFT-R Handset

67. STEP 1003

STOP Attendant to PA Test

68. STEP 1100

START AAU Handset Port Verification Test

69. STEP 1101

ENSURE correct handset port interface by performing the

following steps for all cabin attendant handsets:

A. Remove the handset from cradle.

B. DO dial the dial code assigned to the handsets station.

C. Verify the PINK Attnd. call lights at the handset's

station do not illuminate.

D. Replace the handset in cradle.

NOTE:

1. Assigned Dial Codes for handset locations are as follows:

FWD-L = DOOR 1 LEFT

FWD-R = DOOR 1 RIGHT

MID-C = MIDSTATION

AFT-L = DOOR 3 LEFT

AFT-R = DOOR 3 LEFT

2. Call light(s) will illuminate at the opposite station

for FWD and AFT handsets.

70. STEP 1102

VERIFY that the previous steps were performed and PASSED

for the listed handset:

1. FWD-L Handset

2. FWD-R Handset

3. MID-C Handset

4. AFT-L Handset

5. AFT-R Handset

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BOEING SERVICE BULLETIN 767-23-0164

71. STEP 1103

STOP AAU Handset Port Verification Test

F. Put the airplane back to a serviceable condition.

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BOEING SERVICE BULLETIN 767-23-0164

FIGURE TABLE OF CONTENTS

Title Page

FIGURE 1. PILOTS' HANDSET REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

FIGURE 2. ATTENDANT HANDSET REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 27

FIGURE 3. AUDIO ACCESSORY UNIT REPLACEMENT (AIRPLANES

VR051-VR057) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

May 31, 2001 767-23-0164

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BOEING SERVICE BULLETIN 767-23-0164

CORD

PILOTS' HANDSET

1 2

3

FLIGHT COMPARTMENT

V52511

FIGURE 1. PILOTS' HANDSET REPLACEMENT

May 31, 2001 SHEET 1 OF 2 767-23-0164

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BOEING SERVICE BULLETIN 767-23-0164

The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

The QTY numbers shown below are the numbers of parts necessary for the airplane.

STEP TASK NAME PART NUMBER QTY NOTES

1 Remove Pilots' Handset 285W0024-4A 1 Disconnect the handset from the

cord.

2 Install Pilots' Handset 285W0024-8A 1 Connect the cord to the

handset.

3 Make Sure Dialing Codes

Marker

BAC27TEX6744 (a) 1 Is installed. If the correct

marker is not installed, replace

the existing marker with the

correct marker. Refer to

BSOPM 20-50-05.

BAC27TEX6686 (b) 1

(a) Airplanes VR051-VR057

(b) Airplane VS303

FIGURE 1. PILOTS' HANDSET REPLACEMENT

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BOEING SERVICE BULLETIN 767-23-0164

APPLICABLE TO AIRPLANE VS303

APPLICABLE TO AIRPLANES VR051-VR057

FWD

FWD

SEE A HANDSET

SEE HANDSET A

SEE A HANDSET

SEE A HANDSET

SEE A HANDSET

SEE A HANDSET SEE A HANDSET

SEE A HANDSET

SEE A HANDSET

SEE A HANDSET

V52515

FIGURE 2. ATTENDANT HANDSET REPLACEMENT

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BOEING SERVICE BULLETIN 767-23-0164

CORD

A

1 2

3

V52539

FIGURE 2. ATTENDANT HANDSET REPLACEMENT

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BOEING SERVICE BULLETIN 767-23-0164

The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

The QTY numbers shown below are the numbers of parts necessary for the airplane.

STEP TASK NAME PART NUMBER QTY NOTES

1 Remove Attendant Handset 285W0024-1L (a) 5 Disconnect the cord from the

handset. 285W0024-1H (b) 5

2 Install Attendant Handset 285W0024-7L (a) 5 Connect the cord to the

handset. 285W0024-7H (b) 5

3 Make Sure Dialing Codes

Marker

BAC27TEX6745 (a) 5 Is installed. If the correct

marker is not installed, replace

the existing marker with the

correct marker. Refer to

BSOPM 20-50-05.

BAC27TEX6687 (b) 5

(a) Airplanes VR051-VR057

(b) Airplane VS303

FIGURE 2. ATTENDANT HANDSET REPLACEMENT

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BOEING SERVICE BULLETIN 767-23-0164

1 2

FWD

E2-5 SHELF

MAIN EQUIPMENT CENTER

V52547

The step numbers shown below agree with the numbers shown in the circle symbols in the figure.

The QTY numbers shown below are the numbers of parts necessary for the airplane.

STEP TASK NAME PART NUMBER QTY NOTES

1 Remove Audio Accessory

Unit

285T0001-301 1 Refer to AMM 767 23-42-01/401

2 Install Audio Accessory

Unit

285T0001-302 1 Refer to AMM 767 23-42-01/401

FIGURE 3. AUDIO ACCESSORY UNIT REPLACEMENT (AIRPLANES VR051-VR057)

May 31, 2001 SHEET 1 OF 1 767-23-0164

30
Commercial

Airplane

Group

767

Service Bulletin

Number: 767-23-0164 Evaluation Form

Date: May 31, 2001

ATA System: 2342

Prepared By: Michael Nelson

SUBJECT: COMMUNICATIONS - Interphone - Cabin Interphone System - Audio Accessory Unit And

Handset Replacement

Use this evaluation form to tell us what you think of the quality of this service bulletin. We will use the data

that you give us to improve the quality of our service bulletins.

NOTE: Please do not use this evaluation form to tell us to make changes to your manuals. To make these

changes, please use a Publication Change Request (PCR) form.

Please give us this data:

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PREPARED BY: TITLE:

ORGANIZATION: TELEX CODE:

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Give the completed evaluation form to your Boeing Field Service Representative or send the evaluation form

directly to this address:

Manager

Service Bulletin Engineering

Boeing Commercial Airplane Group

P.O. Box 3707, Mail Stop 2H-37

Seattle, WA 98124-2207