July 11, 2002

Revision 2: October 12, 2006 777-23-0175

BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 1 of 20

Commercial

Airplane

Group 777

Service Bulletin

Number: 777-23-0175

Date: July 11, 2002

Revision 2: October 12, 2006

ATA System: 2339

SUBJECT: COMMUNICATIONS - Cabin Management System (CMS) - Change the Operational 

Software

BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET

Copyright © 2002 The Boeing Company

Unpublished Work - All Rights Reserved

Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable 

subject matter. Boeing also claims copyright in this document as a compilation and/or collective work.

This document includes proprietary information owned by The Boeing Company and/or one or more third 

parties. Treatment of the document and the information it contains is governed by contract with Boeing. For 

more information, contact The Boeing Company, P.O. Box 3707, Seattle, Washington 98124.

Boeing, 707, 717, 727, 737, 747, 757, 767, 777, BBJ, BOEING BUSINESS JET, DC-8, DC-9, DC-10, MD-10, 

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 Table of Contents

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Table of Contents

Revision Transmittal Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1. PLANNING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

A. Effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

E. Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2. Data supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . 14

3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . 14

K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . 14

2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

A. Material - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

C. Parts Necessary For Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1. Kits/Parts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2. Parts and Materials Supplied by the Operator: . . . . . . . . . . . . . . . . . . . . . . 15

3. Parts Modified and Reidentified: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4. Parts Removed and Not Replaced: . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

E. Special Tooling - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . 15

3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
 Table of Contents

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Commercial

Airplane

Group 777

Service Bulletin

Number: 777-23-0175 Revision Transmittal Sheet

Date: July 11, 2002

Revision 2: October 12, 2006

ATA System: 2339

SUBJECT: COMMUNICATIONS - Cabin Management System (CMS) - Change the Operational 

Software

This revision includes all pages of the service bulletin.

COMPLIANCE INFORMATION RELATED TO THIS REVISION

Revision 2 - More work is necessary on airplanes changed as shown in the initial release and in Revision 1 of 

this service bulletin. Airplanes with Overhead Electronics Unit (OEU) hardware 285W0029-5 installed must 

install OEU Operational Program Software (OPS).

REASON FOR REVISION

This revision is sent to add an instruction to install OEU OPS for the configuration that has OEU hardware part 

number 285W0029-5 installed. This instruction was omitted in the initial release and Revision 1 of this service 

bulletin. In Work Instructions, Paragraph 3.B a new step 6 is added.

Also, in Summary Manpower and in paragraph 1.G, manpower estimate is changed.

Paragraph 1.A., Effectivity, shows changes of airplane operators. Each operator should examine the Effectivity 

paragraph for changes.

Vertical lines are put on the left edge of each page, except in Paragraph 1.A., Effectivity, to show the location 

of important changes.

Pages with no vertical lines have no important changes.

REVISION HISTORY

Original Issue: July 11, 2002

Revision 1: July 17, 2003

Revision 2: October 12, 2006
 

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Commercial

Airplane

Group 777

Service Bulletin

Number: 777-23-0175 Summary

Date: July 11, 2002

Revision 2: October 12, 2006

ATA System: 2339

SUBJECT: COMMUNICATIONS - Cabin Management System (CMS) - Change the Operational 

Software

CONCURRENT REQUIREMENTS

The related Boeing component service bulletin is 285W0925-23-02.

BACKGROUND

Boeing Service Related Problem (SRP) 777-SRP-24-0091 is related to this service bulletin.

The change described in this service bulletin will change the operation of cabin lighting system when the CABIN/

UTILITY switch is installed. Smoke and flames in the cabin passenger can cause injury to passengers and 

damage to the safety-critical cabin equipments.

We have received numerous reports of smoke or flames in the passenger cabin related to the wiring for the 

passenger cabin in-flight entertainment system, cabin lighting and passenger seats. It is not easy to remove the 

electrical power to these systems to stop the smoke and flames.

A CABIN/UTILITY switch can be installed to remove power to some systems in the passenger cabin. This 

change to the cabin services system (CSS) operational software (OPS) will change the way various lighting 

systems operate when the switch is set to "OFF".

When the CABIN/UTILITY switch is set to OFF, all night lights, reading lights and attendant work lights will come 

on. Commands from the attendant switch panel for night light operation will be ignored. A message will be shown 

on the cabin control panels which says "REDUCED POWER CONDITION - Fluorescent lights may be off. Night 

lights are locked on". This message replaces the Function Lock-Out - Reduced Power pop-up screen.

When the CABIN/UTILITY switch is set to ON, control of the cabin lighting systems by the cabin control panels 

is put back to normal and the REDUCED POWER CONDITION message is removed.

The cabin control panels will show the state of the CABIN/UTILITY switch on the Input Monitor - ARINC 629 Bus 

screen.

ACTION (PRR 61887K)

Replace the mass memory card (MMC) with a new card with the new CSS OPS. Install a new OPS in the Cabin 

Area Control Panel (CACP), Zone Management Units (ZMU) and the Cabin System Management Unit (CSMU). 

Make a change to the CSS configuration database (CDB). Install the new database in the CSS components.
 

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EFFECTIVITY

All 777 airplanes variable numbers WA001, WA101-WA104, WA210-WA212, WA223, WA231-WA232, WA241-

WA250, WB016-WB021, WB031-WB044, WB105-WB106, WB133-WB135, WB165-WB173, WB184-

WB188,WB231-WB239, WB271-WB272, WB276-WB286, WB291-WB301, WB306-WB307, WB311-WB327, 

WB336-WB337, WB366-WB367, WB371-WB386, WB406, WB411-WB413, WB416-WB433, WB446-WB452, 

WB476, WB481-WB484, WB501-WB507, WB531-WB535, WB551-WB554, WB591-WB595, WB601-WB606, 

WB611-WB615, WB631-WB632, WB636, WB637, WC051-WC067, WC101-WC103, WC111. 

COMPLIANCE

Boeing recommends that this service bulletin to be done within 60 months from the effective date of an 

applicable Airworthiness Directive.

INDUSTRY SUPPORT INFORMATION

Boeing warranty remedies are not available for the configuration changes given in this service bulletin.

MANPOWER

MATERIAL INFORMATION

None.

Airplanes Total Task Hours Elapsed Hours

777-200 and 777-300 5.0 5.0
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Commercial

Airplane

Group 777

Service Bulletin

Number: 777-23-0175

Date: July 11, 2002

Revision 2: October 12, 2006

ATA System: 2339

SUBJECT: COMMUNICATIONS - Cabin Management System (CMS) - Change the Operational 

Software

1. PLANNING INFORMATION

A. Effectivity

1. Airplanes

Refer to Service Bulletin Index Document D6-24W001 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 PRR 61887K for data about this change.

Airplane models:

777-200 777-300

IDENTIFICATION BY CUSTOMER, CUSTOMER CODE, GROUP AND VARIABLE NUMBER

AIR AUSTRAL (AUX)

1 WB366–WB367

AIR CHINA (BEJ)

1 WA241–WA250

AIR FRANCE (AFA)

1 WB311–WB327

ALL NIPPON AIRWAYS (ANA)

1 WA223 WA231–WA232 WB481–WB484 WB531–WB535

AMERICAN AIRLINES (AAL)

1 WB416–WB433 WC051–WC067

GROUP CONFIGURATION DESCRIPTION

1 - 777-200 and 777-300 airplanes.
 

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ASIANA AIRLINES (AAR)

1 WC111

AUSTRIAN (AUL)

1 WB271–WB272

BRITISH AIRWAYS (BAB)

1 WB016–WB021 WB031–WB044 WB411–WB413

CATHAY PACIFIC AIRWAYS (CAT)

1 WA001 WA101–WA104 WB501–WB507

CONTINENTAL AIRLINES (CAL)

1 WB371–WB386

DELTA AIR LINES (DAL)

1 WB446–WB452

EL AL ISRAEL AIRLINES (ELA)

1 WC101–WC103

EMIRATES (EAD)

1 WB105–WB106 WB631–WB632 WB636–WB637

JAL DOMESTIC (JAS)

1 WA210–WA212

JAL INTERNATIONAL (JAL)

1 WB591–WB595

KOREAN AIR (KAL)

1 WB133–WB135 WB551–WB554

KUWAIT AIRWAYS (KUW)

1 WB306–WB307

MALAYSIA AIRLINES (MAS)

1 WB165–WB173

MID EAST JET (SKL)

1 WB406

SAUDI ARABIAN AIRLINES (SVA)

1 WB276–WB286 WB291–WB301

SAUDI OGER (SAO)

1 WB476

SINGAPORE AIRLINES (SIA)

1 WB184–WB188 WB231–WB239 WB611–WB615

THAI AIRWAYS INTERNATIONAL (TII)

1 WB601–WB606
 

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VIETNAM AIRLINES (VIE)

1 WB336–WB337

IDENTIFICATION BY VARIABLE NUMBER

Variable Group

WA001 1

WA101–WA104 1

WA210–WA212 1

WA223 1

WA231–WA232 1

WA241–WA250 1

WB016–WB021 1

WB031–WB044 1

WB105–WB106 1

WB133–WB135 1

WB165–WB173 1

WB184–WB188 1

WB231–WB239 1

WB271–WB272 1

WB276–WB286 1

WB291–WB301 1

WB306–WB307 1

WB311–WB327 1

WB336–WB337 1

WB366–WB367 1

WB371–WB386 1

WB406 1

WB411–WB413 1

WB416–WB433 1

WB446–WB452 1

WB476 1

WB481–WB484 1

WB501–WB507 1

WB531–WB535 1

WB551–WB554 1

WB591–WB595 1

WB601–WB606 1

WB611–WB615 1

WB631–WB632 1

WB636–WB637 1
 

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2. Spares Affected

None.

B. Concurrent Requirements

The related Boeing component service bulletin 285W0925-23-02.

C. Reason

Boeing Service Related Problem (SRP) 777-SRP-24-0091 is related to this service bulletin.

The change described in this service bulletin will change the operation of cabin lighting system when 

the CABIN/UTILITY switch is installed. Smoke and flames in the cabin passenger can cause injury to 

passengers and damage to the safety-critical cabin equipments.

We have received numerous reports of smoke or flames in the passenger cabin related to the wiring 

for the passenger cabin in-flight entertainment system, cabin lighting and passenger seats. It is not 

easy to remove the electrical power to these systems to stop the smoke and flames.

A CABIN/UTILITY switch can be installed to remove power to some systems in the passenger cabin. 

This change to the cabin services system (CSS) operational software (OPS) will change the way 

various lighting systems operate when the switch is set to "OFF".

When the CABIN/UTILITY switch is set to OFF, all night lights, reading lights and attendant work lights 

will come on. Commands from the attendant switch panel for night light operation will be ignored. A 

message will be shown on the cabin control panels which says "REDUCED POWER CONDITION - 

Fluorescent lights may be off. Night lights are locked on". This message replaces the Function LockOut - Reduced Power pop-up screen.

When the CABIN/UTILITY switch is set to ON, control of the cabin lighting systems by the cabin 

control panels is put back to normal and the REDUCED POWER CONDITION message is removed.

The cabin control panels will show the state of the CABIN/UTILITY switch on the Input Monitor - 

ARINC 629 Bus screen.

Revision 1 was sent to give the changes to the cabin attendant work lights in the CMS configuration 

database.

Revision 2 is sent to add an instruction to install Overhead Electronics Unit (OEU) Operational 

Program Software for the configuration that has OEU hardware part number 285W0029-5 installed. 

This instruction was omitted in the initial release and Revision 1 of this service bulletin. In Work 

Instructions, Paragraph 3.B a new step 6 is added.

Also, in Summary Manpower and in paragraph 1.G, manpower estimate is changed.

WC051–WC067 1

WC101–WC103 1

WC111 1

Variable Group
 

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D. Description

The mass memory card (MMC) is replaced with a new card with new CSS OPS. A new OPS is 

installed in the Cabin Area Control Panel (CACP), the Zone Management Units (ZMU) and the Cabin 

System Management Unit (CSMU). A change to the CSS configuration database (CDB) is made. The 

new database is installed in the CSS components.

Revision 1 - More work is necessary on airplanes changed as shown in the initial release of this 

service bulletin to make the changes necessary for the cabin attendant work lights.

Revision 2 - More work is necessary on airplanes changed as shown in the initial release and in 

Revision 1 of this service bulletin. Airplanes with Overhead Electronics Unit (OEU) hardware 

285W0029-5 installed must install OEU OPS.

E. Compliance

Boeing recommends that this service bulletin to be done within 60 months from the effective date of 

an applicable Airworthiness Directive.

F. Approval

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

specified in this service bulletin comply with the applicable regulations and are FAA approved, as well 

as European Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/

JAA approved airplanes listed in the service bulletin effectivity. This service bulletin and its approval 

were based on the airplane in its original Boeing delivery configuration or as modified by other 

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.

G. Manpower

The table below shows an estimate of the task-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 

task-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.

Task

Number of 

Persons Task-Hours Elapsed Hours

Replace 1 4.0 4.0

Test 1 1.0 1.0

TOTAL FOR EACH AIRPLANE 5.0 5.0
 

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BOEING SERVICE BULLETIN 777-23-0175

The change to the mass memory card as given in Boeing Component Service Bulletin 

285W0925-23-02 is not included.

H. Weight and Balance Changes

None.

I. Electrical Load Data

Not changed.

J. References

1. Existing Data:

a. Engineering Change Memo PRR61887

b. Service Related Problem (SRP) 777-SRP-24-0091

c. 777 Maintenance Manual (AMM) Subject 23-39-00, 23-39-16

d. Boeing Component Service Bulletin 285W0925-23-02

2. Data supplied with this Service Bulletin:

None.

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

None.

K. Publications Affected

L. Interchangeability and Intermixability of Parts

Accomplishment of this service bulletin does not affect interchangeability or intermixability of parts.

Publication Chapter-Section

777 Maintenance Manual 23-39

777 Illustrated Parts Catalog 23-39

777 Flight Attendant Manual 2A.60, 3.10
 

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2. MATERIAL INFORMATION

A. Material - Price and Availability

None.

B. Industry Support Information

Boeing warranty remedies are not available for the configuration changes given in this service bulletin.

C. Parts Necessary For Each Airplane

1. Kits/Parts:

None.

2. Parts and Materials Supplied by the Operator:

3. Parts Modified and Reidentified:

None.

4. Parts Removed and Not Replaced:

None.

D. Parts Necessary to Change Spares

None.

E. Special Tooling - Price and Availability

None.

F. 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.

Part Number / 

Specification QTY Name Existing Part Number Notes

285W0925-3 1 Mass memory Card 285W0925-1 or 

285W0925-2

(a) (b) (c)

(a) You can change the installed MMC to the new part number as specified in the component service 

bulletin 285W0925-23-02.

(b) This part is used in production.

(c) You can use the existing part to replace the new or changed part. If you use the existing part, you 

cancel the effect of the change given in this service bulletin.
 

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3. ACCOMPLISHMENT INSTRUCTIONS

A. GENERAL INFORMATION

NOTE:

1. Manual titles are referred to by acronyms. Refer to Paragraph 1.J., References, for 

definition of the acronyms.

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

3. The Configuration Database Generator (CDG) is a ground support engineering software 

tool that is hosted on a personal computer (PC) and used to build the Configuration 

Database (CDB) media sets for individual airplanes.

B. WORK INSTRUCTIONS

1. At the CSCP, remove the installed MMC 285W0925-1 or 285W0925-2. Refer to the 777 AMM 

23-39-16, Mass Memory Card (MMC) Removal.

2. Install the new MMC 285W0925-3. Refer to the 777 AMM 23-39-16, Mass Memory Card (MMC) 

Installation.

NOTE:The 285W0925-3 MMC can be obtained by reworking the 285W0925-1 or 285W0925-2 

MMC as specified in the component service bulletin 285W0925-23-02.

3. Do a phase II installation of the new CSMU software part number 2313-BCE-01T-03. Refer to the 

777 AMM 23-39-00, Operational Program Software Installation (Phase II).

4. Do a phase II installation of the new CACP software part number 2313-BCE-01U-02. Refer to the 

777 AMM 23-39-00, Operational Program Software Installation (Phase II).

5. Do a phase II installation of the new ZMU software part number 2374-BCE-021-02. Refer to the 

777 AMM 23-39-00, Operational Program Software Installation (Phase II).

6. If your configuration has Overhead Electronics Unit (OEU) hardware 285W0029-5 installed, do 

a phase II installation of the new OEU OPS (12 PORT), part number 2310-BCE-01V-02. Refer 

to the 777 AMM 23-39-00, Operational Program Software Installation (Phase II). 

7. Do a phase I installation of the new configuration database. Refer to the 777 AMM 23-39-00, 

Phase I Data Installation From the CSCP Disk Drive to the CSCP Mass Storage. To get the new 

database, do these steps:

NOTE:Refer to the Boeing Configuration Database Generator (CDG) User Guide, Version 

285W0881-3, D634W602-1, Rev 2.

a. Get ready to make a change to the configuration database (CDB).

(1) Load the serviceable database file.

(2) Do a consistency check. Make the menu selections "Utilities - Check Consistency".
 

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(3) When the check is completed, make the menu selection "Print". Keep the printed data 

to use in a subsequent step.

(4) Make the menu selections "Utilities - Generate reports".

(5) Put a check mark in the box for "Special Functions" (Section 16). Make the selection 

"Accept".

(6) When the report is completed, make the selections "Print". Keep the printed data to use 

in a subsequent step. Make the selection "Exit".

(7) Make the menu selections "File - Save as". Make a new name for the database and 

save the file.

NOTE:The use of the characters “CDB” (i.e. “mmm” code) in the software part number 

is exclusively reserved for Boeing generated CMS database software. Boeing 

recommends the use of the customer three letter manufacturing designator.

b. Change the cabin attendant work lights functions in the CDB.

(1) Make the menu selections "Data - Attendant Work Lights".

(2) See the printed data made before and find all the attendant work lights in the Special 

Functions part. The Attendant Work Lights can be found on Special Functions 1-25.

(3) Write each attendant work lights OEU data (Input, Output and Location Description) on 

each "Att Switch Index" screen.

(4) Accept the screen when done.

(5) Make the menu selections "Data-Special Functions".

(6) Remove the attendant work lights from the special functions by removing the check 

mark in the In-Config box.

(7) Accept the screen when done.

(8) Make the menu selections "File-Save".

c. Change the Cabin Utility Switch functions for the crew rest areas in the CDB.

(1) Make the Special Functions for the ground service bus loss outputs and crew rest 

reading light outputs.

(a) Make the menu selections "Data - Special Functions".

(b) Find the special function that has "Ground service bus loss" as the input type 

(usually it is Special Function number 62). Find any special function that has the 

crew rest reading lights. Use the printed data made before to find the special 

function number.

NOTE: If no ground service bus loss or crew rest reading light special functions 

are found, no more changes to the database are necessary. Go to the step 
 

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to check the database and make the data load discs.

(c) Go to the special function number 79 and put an X in the "In-Config" box. If this 

special function number is already used, find a special function number that is not 

used and is higher than the one for the Ground service bus loss entry.

(d) Make a click on the "Input Type" box. From the pull down menu, make the 

selection "CSS Discrete/Signal".

(e) Make a click in the "CSS Discrete/Signal" box. Make the selection "Cabin Utility 

Switch".

(f) Make the selection "Close".

(g) Make the selection "Output Type 2", then "Edit - Insert Record".

(h) Enter all the same output data from the "Ground service bus loss" special function 

and the crew rest reading lights special function.

(i) For each crew rest reading light, make the Initial/Inactive setting "NULL" and the 

Active setting "ON". Make the selection "Close" to get to the Special Functions 

screen.

(j) Make a click on the "Description" button. Write a new description in the box for 

the Cabin Utility Switch special function. The description could be text mixed from 

both the description(s) for the Attendant Work Lights and the Ground Service Bus 

Loss (if found). If necessary, change the words "Ground service bus loss" to 

"Cabin Utility Switch" in the new description. Make the selection "Closed".

(k) Make the selection "Accept".

(l) Make the menu selections "File - Save".

d. Do a check of the database and make the data load disks for the new CDB.

(1) Do a consistency check. Make the menu selections "Utilities - Check Consistency".

(2) Change the database as necessary to remove any critical errors.

(3) Optional - It can be a help to examine the warnings before and after the database 

changes. A differences report can also give more information. Refer to the CDG Users 

Manual D634W602-1 to get the necessary instructions to make these reports.

(4) Make the menu selections "Utilities - Create Data Load disk". Use an operator selected 

diskette set part number and make the selection "Accept".

NOTE:Do not use the characters "222W0014-" in the diskette set part number. These 

characters are to be used only for Boeing made database disk sets.

(5) When told, put the first blank disk in the drive a: and make the selection "OK".

NOTE:Use only new or reformatted High Density 1.44 Mb disks. Errors can occur if the 

disk is not reformatted before use.
 

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(6) When told, remove the disk. Read the instructions to make a label for the removed disk.

(7) When told, put the second blank disk in the drive a: and make the selection "OK".

(8) When told, remove the disk. Read the instructions to make a label for the removed disk.

8. Install the new configuration database to the CSS LRUs. Refer to the 777 AMM 23-39-00, 

Configuration Database Installation, to get the necessary procedures.

9. Do a check of the CSMU, CACP and ZMU software part numbers. Refer to the 777 AMM 

23-39-00, Operational Program Software and Configuration Database Verification test.

10. Put the airplane back to a serviceable condition.