# Service Bulletin

523-0817821-001000 **NAVIGATION TDR-94 ATC/MODE S TRANSPONDER (CPN 622-9352-007/008/207/308/309)**  **TDR-94D ATC/M ODE S TRANSPONDER (CPN 622-9210-007/008/207/308/309)**  **CPU I/O Programmed Circuit Card A5 (CPN 653-3674**  **-003/004/005/006/007/008/009/010/011/012/013/014/015/016/019/020/021/022/023/024) Video Processor Circuit Card A6** 

**(CPN 687-0726-004/005/006/007) SERVICE BULLETIN 508** 
**ENSURES CORRE CT EHS SELECTED ALTITUDE**  **REPORTING AND ADDS PRO LINE FUSIONTM CAPABILITY (CONVERTS -007/207/008/308/309 TO -310)**  TRANSMITTAL INFORMATION SUMMARY **S u**  **m m**  **a r** **y** This is the original issue of SB 508 for the TDR-94( ) ATC/Mode S Transponder. **S e**  **r v**  **i c** **e B**  **u l**  **l e** **t i**  **n R**  **e v**  **i s**  **i o**  **n H**  **i s** **t o**  **r y** 
**REVISION DATE OF RELEASE** Initial Release September 16, 2009 N OT E : This servic e bulletin may be installed only by Rockwell Collins, Inc. or an authorized Rockwell Collins, Inc. Service Center. N OT E : Implied by reference from this service bulletin, previously issued service bulletins that are applicable to the old unit (to be converted) are also applicable to the unit created by this service bulletin. Mark out all SBs that are incorporated. The new unit part number is identific ation of the installation of this service bulletin. Do not mark out Service Bulletin 508.

Exp ort Control Classification Notice (ECCN) for this document is 6E991. © Copyright, 2009 Rockwell Collins, Inc., All rights reserved Sep 16/09 TDR-94( )-34-508 Page 1 of 26

# Service Bulletin

**Software License and General Conditions of Sale** For each software license procured, the Software License for Equipment Specific Software, reproduced below, shall apply. **Software License for Equipment Specific Software** Software delivered hereunder, either embedded in equipment describ ed herein or specifically designed for use in or with such equipment, is copyrighted by the seller and shall remain the sole and exclusive property of seller. Seller grants the buyer a perpetual, worldwide, non-exclusive license to use the software only in or with the equipment. The buyer shall not copy, modify, or disassemble the software, or permit others to do so. Buyer shall not tra nsfer the license granted hereby or posse ssion of the software except as part of or with the equipment, such transfer being subject to the restrictio ns contained herein. Seller may terminate this license upon written notice for violation of any of the terms of the foregoing license. Should the customer have any questions concerning the s cope of permitted use, please contact your Rockwell Customer Service Engineer. Rockwell Collins' General Conditions of Sale 074-8431-866 (Rev 06/03) are incorporated herein by reference.

Sep 16/09 TDR-94( )-34-508 Page 2

# Service Bulletin

**1. P l**  **a n**  **n i**  **n g**  **I n**  **f o**  **r m**  **a t**  **i o**  **n** A. Effectivity The modification procedure described in this service bulletin changes the part number of the equipment type as listed below. **COLLINS PART NUMBER UNIT**  **BEFORE CONVERSION AFTER CONVERSION** 622-9352-007 622-9352-310 622-9352-008 622-9352-310 622-9352-207 622-9352-310 622-9352-308 622-9352-310 TDR-94

622-9352-309 622-9352-310 622-9210-007 622-9210-310 622-9210-008 622-9210-310 622-9210-207 622-9210-310 622-9210-308 622-9210-310 TDR-94D

622-9210-309 622-9210-310 N OT E : The modification contained in this servic e bulletin is strictly applicable to the status(es) listed and not applicable to additional status(es) within the equipment type or additional status(es) within the equipment family. N OT E : Installation of units modified in accord ance with this service bulletin may require a change to the aircraft TC/STC data unless the new equipment part number is already included in the data. B. Concurrent Requirements Service Bulletin 21, 24 and 29 must be installed prior to or at the same time as this service bulletin. C. Reason (1) Condition Modification Affects Units installed in aircraft that are configured for CSDB altitude sources and may intermittently transmit incorrect Selected Altitude data in an Enhanced Surveillance reply. Current units are not Pro Line FusionTM capable. (2) Extent Condition Encountered -007/207/008/308/309 units configured for CSDB altitude sources that are required to transmit Enhanced Surveillance data. All units required to operate in a Pro Line FusionTM installation.
Sep 16/09 TDR-94( )-34-508 Page 3

# Service Bulletin

(3) Scope of Modification This is a permanent change. (4) Expected Benefits of Modification Enhanced Surveillance replies with Selected Altitude data from CSDB altitude sources will contain the correct value. Converted units will have the capability to operate in a Pro Line FusionTM installation. D. Description Update software. Replace PROM. Replace A5 card if necessary. Change identification plate. E. Compliance Optional. F. Approval TDR-94 (CPN 622-9352-310) conforms to FAA TSO C112 Class 3A2 121 010. TDR-94D (CPN 622-9210-310 conforms to FAA TSO C112 Class 3A2 121 011. Installation of this service bulletin changes the part number of the TDR-94/94D as listed in paragraph 1.A. Installation of units modified in accordance with this service bulletin may require a change to aircraft TC/STC data unless the new part number is already included in the data. G. Labor Installation of this service bulletin is subject to special pricing. Refer to paragraph 2.A. H. Weight and Balance Not affected. I. Electrical Load Data Not affected. J. Software Accomplishment Summary Software Accomplishment Summary document (CPN 829-8879-112), is written in accordance with RTCA-DO-178( ). K. References TDR-94/TDR-94D (-004 Status and Higher) ATC/Mode S Transponder Component Maintenance Manual with Illustrated Parts List (CPN 523-0778502) (34-50-96).

Sep 16/09 TDR-94( )-34-508 Page 4

# Service Bulletin

Avionics Standard Shop Practices Instruction Book (CPN 523-0768039). All Avionics Service Information Letter 3- 93, titled "Non-Procurable Equipment Cleaning Solutions" (CPN 523-0804806). All Avionics SIL 05-2, titled "Clarification And Information On Usage And Ordering Of Collins Nameplates And Modification Plates" (CPN 523-0806340). All Avionics Service Information Letter 3-03, titled "Disposal of Retired TSO Nameplates" (CPN 523-0806251). L. Other Publications Affected The next full revision to the referenced component maintenance manual with illustrated parts list will include the information contained in this service bulletin.

Sep 16/09 TDR-94( )-34-508 Page 5

# Service Bulletin

**2. M a** **t e**  **r i**  **a l**  **I n**  **f o**  **r m**  **a t**  **i o**  **n** A. Cost and Availability Installation of this service bulletin is subject to special pricing. Please contact a Rockwell Collins, Inc. Service Center to obtain the price. This service bulletin may be installed only by Rockwell Collins, Inc. or an authorized Rockwell Collins, Inc. Service Center. The equipment owner bears responsibility for cost of installation of this service bulletin. B. Material Required Refer to paragraph 2.A. to determine the charge for installation of this service bulletin. Use the following materials to modify one TDR-94 (CPN 622-9352-007/207).
**COLLINS PART NUMBER**  **QTY DESCRIPTION**

280-3778-050 AR Chart, Modification 685-2622-033 or 685-2622-035 AR Plate, Identification (TDR-94) 280-3847-040 1 Label, Pressure Sensitive 859-6700-010 2 Connector 653-1328-002 1 Cover, Modulator Circuit Card Assembly 653-2283-002 1 Shield, Synthesizer 428-0282-050 AR Wire, Electrical, #30 AWG, Brown 653-3674-018 or 653-3674-022 or 653-3674-024 or 653-3674-026 1 CPU I/O Programmed Circuit Card (TDR-94)

1 831-4505-004 1 EPROM, Label Screening, A5U13 1 Required if using CPN 653-3674-018/022/024 CPU I/O Progra mmed Circuit Card. CPN 831-4505-004 already installed on CPN 653-3674-026 CPU I/O Programmed Circuit Card.

Sep 16/09 TDR-94( )-34-508 Page 6

# Service Bulletin

Use the following materials to modify one TDR-94D (CPN 622-9210-007/207)
**COLLINS PART NUMBER**  **QTY DESCRIPTION**

280-3778-050 AR Chart, Modification 685-2613-031 or 685-2613-033 AR Plate, Identification (TDR-94D) 280-3847-040 1 Label, Pressure Sensitive 859-6700-010 2 Connector 653-1328-002 1 Cover, Modulator Circuit Card Assembly 653-2283-002 1 Shield, Synthesizer 428-0282-050 AR Wire, Electrical, #30 AWG, Brown 653-3674-017 or 653-3674-021 or 653-3674-023 or 653-3674-025 1 CPU I/O Programmed Circuit Card (TDR-94D)

1 831-4505-004 1 EPROM, Label Screening, A5U13 1 Required if using CPN 653-3674-017/021/023 CPU I/O Progra mmed Circuit Card. CPN 831-4505-004 already installed on CPN 653-3674-025 CPU I/O Programmed Circuit Card.

Use the following materials to modify one TDR-94 (CPN 622-9352-008/308/309).
**COLLINS PART NUMBER**  **QTY DESCRIPTION**

280-3778-050 AR Chart, Modification 685-2622-033 or 685-2622-035 AR Plate, Identification (TDR-94) 280-3847-040 1 Label, Pressure Sensitive 831-4505-004 1 EPROM, Label Screening, A5U13

Sep 16/09 TDR-94( )-34-508 Page 7

# Service Bulletin

Use the following materials to modify one TDR-94D (CPN 622-9210-008/308/309).

**COLLINS PART NUMBER**  **QTY DESCRIPTION**

280-3778-050 AR Chart, Modification 685-2613-031 or 685-2613-033 AR Plate, Identification (TDR-94D) 280-3847-040 1 Label, Pressure Sensitive 831-4505-004 1 EPROM, Label Screening, A5U13 C. Special Equipment or Tooling Required Boardsite Profile Data (CPN 613-6608-112) Program Data (CPN 829-8884-112, CPN 832-3615-112, CPN 815-7871-112) Boardsite Interface Adapter (CPN 685-6400-002 or equivalent)

Sep 16/09 TDR-94( )-34-508 Page 8

# Service Bulletin

**3. A c**  **c o**  **m p**  **l i**  **s h**  **m e**  **n t**  **I n**  **s t**  **r u**  **c t**  **i o**  **n s**  A. Modification Procedure C AU T I O N : THIS EQUIPMENT CONTAINS ELECTROSTATIC DISCHARGE SENSITIVE (ESDS) COMPONENTS THAT CAN BE DAMAGED BY STATIC VOLTAGES PRESENT IN MOST REPAIR FACILITIES. N OT E : For detailed repair/cleaning instructions, refer to Avionics Standard Shop Practices Instruction Book. (1) Inspect top level Rockwell Collins part number (CPN). (a) If CPN is 622-9210-007/207 or 622-9352-007/207, proceed to step 3.A.(2). (b) If CPN is 622-9210-008/308/309 or 622-9352-008/308/309, proceed to step 3.A.(3). (2) Modification Procedure for CPN 622-9210-007/207 and CPN 622-9352-007/207 (a) Refer to the Disassembly instructions in the Disassembly section of the referenced component maintenance manual with illustrated parts list. Disassemble the unit as required to remove the Main Chassis Assembly (CPN-653-2254-XXX) and the Transmitter Assembly (CPN 653-2255-0XX). (b) Refer to figure 1. Locate, remove and discard CPU I/O Programmed Circuit Card A5 (CPN 653-3674-003/004/005/006/007/008/009/ 010/011/012/013/014/019/020). (c) Install new CPU I/O Programmed Circuit Card A5 according to the following table. If CPN 653-3674-025 or 653-3674-026 is unavailable, proceed to step 3.A.(2)(d) for instructions for using CPN 653-3674-017 or CPN 653-3674-021 or CPN 653-3674-023 in the top level CPN 622-9210-007/207 and for using CPN 653-3674-018 or CPN 653-3674-022 or CPN 653-3674-024 in top level CPN 622-9352-007/207. Otherwise, proceed to step 3.A.(2)(e).

**T/L CPN CPU I/O PROGRAMMED CIRCUIT CARD A5**  622-9210-007 653-3674-025 622-9352-007 653-3674-026 622-9210-207 653-3674-025 622-9352-207 653-3674-026

Sep 16/09 TDR-94( )-34-508 Page 9

# Service Bulletin

(d) If CPN 653-3674-025 or CPN 653-3674-026 is unavailable, use CPN 653-3674-017 or CPN 653-3674-021 or CPN 653-3674-023 for top level CPN 622-9210-007/207; or CPN 653-3674-018 or CPN 653-3674-022 or CPN 653-3674-024 for top level CPN 622-9352-007/207. Reprogram according to the following instructions. 1 . Install Boardsite Profile (CPN 613-6608-112) into the Boardsite working directory using the import command from the FILE menu option. Do not copy the files within DOS, as this will erase the catalog in the working directory. Specify the drive and dire ctory where the profile exists (either floppy drive or directory other than the working directory). IMPORT the board profile CPN 613-6608-112. 2 . Install the Program Data (Page 0: CPN 829-8884-112, Page 1: CPN 832-3615-112, Page 2: CPN 815-7871-112) into the Boardsite working directory using the TRANSLATE command from the COMMUNICATIONS menu option. Follow the steps below to translate and combine the three Program Data files into one Boardsite programming file. a . Select COMMUNICATIONS from menu. b . Select TRANSLATE from menu. c . Select ASCII for conversion from ASCII to Boardsite. d . Enter location and data file name for Page 0 DOS ASCII FILE SOURCE. e . Enter Boardsite name: 831-6270-112. f . Enter 200 for offset. g . Enter RETURN for offset hi. h . Enter 200 for begin address. i . Enter 2FE00 for block size. j . Select INTEL MCS-86 HEX OBJ for the I/O format. k . Enter FF for fill byte. l . Press ALT-B to begin. m . After translation of Page 0 is complete, press any key to return to the translate menu. n . Select ASCII for conversion from ASCII to Boardsite. o . Enter location and data file name of Page 1 DOS ASCII FILE SOURCE. p . Enter Boardsite name: 831-6270-112. q . Enter 200 for offset. r . Enter RETURN for offset hi.

Sep 16/09 TDR-94( )-34-508 Page 10

# Service Bulletin

s . Enter 10200 for begin address. t . Enter FE00 for block size. u . Select INTEL MCS-86 HEX OBJ for the I/O format. v . Enter FF for fill byte. w . Press ALT-B to begin. x . Press “Y” to merge this file with the previous file. y . After translation of Page 1 is complete, press any key to return to the translate menu. z . Select ASCII for conversion from ASCII to Boardsite. a a . Enter location and data file name of Page 2 DOS ASCII FILE SOURCE. a b . Enter Boardsite name: 831-6270-112. ac . Enter 200 for offset. a d . Enter RETURN for offset hi. a e . Enter 20200 for begin address. af . Enter FE00 for block size. a g . Select INTEL MCS-86 HEX OBJ for the I/O format. a h . Enter FF for fill byte. a i . Press ALT-B to begin. aj . Press “Y” to merge this file with the previous file. 3 . Once the Profile and Program Data have been installed in the Boardsite working directory, the CPU I/O Programmed Circuit Card A5 may be programmed as follows. a . Install the CPU I/O Circuit Card on the Boardsite Interface Adapter (CPN 685-6400-002 or equivalent). b . Press ESC key c . Select the COPY command. d . Select 613-6608-112 circuit card profile. e . Select the DISK file source. f . Select 831-6270-112. g . Press ALT-B to begin. N OT E : Programming procedure will take approximately 1 minute.

Sep 16/09 TDR-94( )-34-508 Page 11

# Service Bulletin

4 . Ensure that the programming operation completes with no errors as indicated on the screen. The Boardsite will return a checksum of 01C4C8C2 and a 32 bit CRC of 4FA7109A. 5 . Mark a new label (CPN 280-3847-040) with CPN 831-6270-112. 6 . Remove existing label from programmed assembly (CPN 831-6270-XXX) and replace it with the label marked in the step 3.A.(2)(d)5
. 7 . Refer to figure 2. Remove EPROM A5U13 (CPN 831-4505-003) and replace with EPROM (CPN 831-4505-004). 8 . Refer to figure 2. If the mod chart is not already on the circuit card, cut the word MOD and five squares from modification chart (CPN 280-3778-050). Remove protective backing and apply mod chart to circuit card. 9 . Use permanent ink and mark SB 508 on the mod chart. 1 0 . Refer to the assembly instructions in the maintenance section of the referenced component maintenance man ual with illustrated parts list to reinstall the CPU I/O Programmed Circuit Card A5 into the main chassis assembly. (e) Video Processor Circuit Card (CPN 687-0726-004/005/006/007) modification procedure. 1 . Refer to figure 1. Locate and remove Video Processor Circuit Card A6 (CPN 687-0726-004/005/006/007). 2 . Refer to figure 3. Locate, remove and discard C1. 3 . Refer to figure 3. Install W1 using #30 AWG brown wire (CPN 428-0282-050) across pads of C1. 4 . Refer to figure 4. If the modification chart is not already on the Video Processor Circuit Card A6, cut the word MOD and five squares from the modification chart (CPN 280-3778-050). Remove protective backing and apply modification chart to Video Proc essor Circuit Card A6 approximately as shown. 5 . Use permanent ink and mark SB 508. 6 . Refer to the assembly instructions in the maintenance section of the referenced component maintenance manual with illustrated parts list to reinstall the Video Processor Circuit Card A6 into the main chassis assembly. (f) Refer to figure 5. If the mod chart is not already on the main chassis assembly, cut the word MOD and ten squares from modification chart (CPN 280-3778-050). Remove protective backing and apply mod chart as shown. (g) Use permanent ink and mark SB 508 on the mod chart on the main chassis assembly.
Sep 16/09 TDR-94( )-34-508 Page 12

# Service Bulletin

(h) Transmitter Assembly (CPN 653-2255-0XX) modification process. 1 . Inspect Transmitter assembly REV letter. a . If transmitter assembly is REV N or earlier, proceed to step 3.A.(2)(h)2
. b . If transmitter assembly is REV P through REV AG, proceed to step 3.A.(2)(h)4
. c . If transmitter assembly is REV AH or later, proceed to step 3.A.(2)(i). 2 . Refer to figure 6. Locate, remove and discard connectors J11 and J12. 3 . Install new connectors (CPN 859-6700-010) in same location. 4 . Refer to figure 6. Locate and remove Modulator Circuit Card Assembly cover. 5 . Install new Modulator Circuit Card Assembly cover (CPN 653-1328-002) in same location. 6 . Refer to figure 6. Install new synthesizer shield (CPN 653-2283-002). N OT E : The synthesizer shield is not a replacement and will be placed over the existing shield. 7 . Refer to figure 7. If the mod chart is not already on the Transmitter Assembly (CPN 653-2255-0XX), cut the word MOD and five squares from the modification chart (CPN 280-3778-050). Remove protective backing and apply mod chart to transmitter assembly approximately as shown. 8 . Use permanent ink and mark SB 508. (i) Refer to the assembly instructions in the maintenance section of the referenced component maintenance manual with illustrated parts list to reassemble the unit. (j) Proceed to step 3.B (3) Modification process for CPN 622-9210-008/308/309 and CPN 622-9352-008/308/309. (a) Refer to the Disassembly instructions in the Disassembly section of the referenced component maintenance manual with illustrated parts list. Disassemble the unit as required to remove the Main Chassis Assembly (CPN-653-2254-XXX). (b) (CPU I/O Programmed Circuit Card A5 (CPN 653-3674-015/016/021/022/ 023/024) programming procedure. 1 . Install Boardsite Profile (CPN 613-6608-112) into the Boardsite working directory using the import command from the FILE menu option. Do not copy the files within DOS, as this will erase the catalog in the working

Sep 16/09 TDR-94( )-34-508 Page 13

# Service Bulletin

directory. Specify the drive and dire ctory where the profile exists (either floppy drive or directory other than the working directory). IMPORT the board profile CPN 613-6608-112. 2 . Install the Program Data (Page 0: CPN 829-8884-112, Page 1: CPN 832-3615-112, Page 2: CPN 815-7871-112) into the Boardsite working directory using the TRANSLATE command from the COMMUNICATIONS menu option. Follow the steps below to translate and combine the three Program Data files into one Boardsite programming file. a . Select COMMUNICATIONS from menu. b . Select TRANSLATE from menu. c . Select ASCII for conversion from ASCII to Boardsite. d . Enter location and data file name for Page 0 DOS ASCII FILE SOURCE. e . Enter Boardsite name: 831-6270-112. f . Enter 200 for offset. g . Enter RETURN for offset hi. h . Enter 200 for begin address. i . Enter 2FE00 for block size. j . Select INTEL MCS-86 HEX OBJ for the I/O format. k . Enter FF for fill byte. l . Press ALT-B to begin. m . After translation of Page 0 is complete, press any key to return to the translate menu. n . Select ASCII for conversion from ASCII to Boardsite. o . Enter location and data file name of Page 1 DOS ASCII FILE SOURCE. p . Enter Boardsite name: 831-6270-112. q . Enter 200 for offset. r . Enter RETURN for offset hi. s . Enter 10200 for begin address. t . Enter FE00 for block size. u . Select INTEL MCS-86 HEX OBJ for the I/O format. v . Enter FF for fill byte. w . Press ALT-B to begin. x . Press “Y” to merge this file with the previous file.

Sep 16/09 TDR-94( )-34-508 Page 14

# Service Bulletin

y . After translation of Page 1 is complete, press any key to return to the translate menu. z . Select ASCII for conversion from ASCII to Boardsite. a a . Enter location and data file name of Page 2 DOS ASCII FILE SOURCE. a b . Enter Boardsite name: 831-6270-112. ac . Enter 200 for offset. a d . Enter RETURN for offset hi. a e . Enter 20200 for begin address. af . Enter FE00 for block size. a g . Select INTEL MCS-86 HEX OBJ for the I/O format. a h . Enter FF for fill byte. a i . Press ALT-B to begin. aj . Press “Y” to merge this file with the previous file. 3 . Once the Profile and Program Data have been installed in the Boardsite working directory, the CPU I/O Programmed Circuit Card A5 may be programmed as follows. a . Install the CPU I/O Circuit Card on the Boardsite Interface Adapter (CPN 685-6400-002 or equivalent). b . Press ESC key. c . Select the COPY command. d . Select 613-6608-112 circuit card profile. e . Select the DISK file source. f . Select 831-6270-112. g . Press ALT-B to begin. N OT E : Programming procedure will take approximately 1 minute. 4 . Ensure that the programming operation completes with no errors as indicated on the screen. The Boardsite will return a checksum of 01C4C8C2 and a 32 bit CRC of 4FA7109A. 5 . Mark a new label (CPN-280-3847-040) with CPN 831-6270-112. 6 . Remove existing label from programmed assembly (CPN 831-6270-XXX) and replace it with the label marked in step 3.A.(3)(b)5
. 7 . Refer to figure 2. Remove EPROM A5U13 (CPN 831-4505-003) and replace with EPROM (CPN 831-4505-004).

Sep 16/09 TDR-94( )-34-508 Page 15

# Service Bulletin

8 . Refer to figure 2. If the mod chart is not already on the circuit card, cut the word MOD and five squares from modification chart (CPN 280-3778-050). Remove protective backing and apply mod chart to circuit card. 9 . Use permanent ink and mark SB 508 on the mod chart. 1 0 . Refer to the assembly instructions in the maintenance section of the referenced component maintenance man ual with illustrated parts list to reinstall the CPU I/O Programmed Circuit Card A5 into the main chassis assembly. (c) Refer to figure 5. If the mod chart is not already on the main chassis assembly, cut the word MOD and ten squares from modification chart (CPN 280-3778-050). Remove protective backing and apply mod chart as shown. (d) Use permanent ink and mark SB 508 on the mod chart on the main chassis assembly. (e) Refer to the assembly instructions in the maintenance section of the referenced component maintenance manual with illustrated parts list to reassemble the unit. (f) Proceed to step 3.B. B. Testing Procedure Test the unit in accordance with the test procedures in the Maintenance section of the referenced component maintenance manual with illustrated parts list. C. Identification Procedure N OT E : The identification procedure must be accomplished in order for the service bulletin to be complete. N OT E : Refer to All Avionics SIL 05-2, titled "Clarification And Information On Usage And Ordering Of Collins Nameplates And Modification Plates" for information on ordering identification plates. (1) If identification plate on unit being modi fied is a laser etched two piece bar-coded plate, order new bar-coded identification plate based on the new unit part number as listed in the following table and proceed to step 3.C.(2). Otherwise, proceed to step 3.C.(3).

Sep 16/09 TDR-94( )-34-508 Page 16

# Service Bulletin

**OLD UNIT CPN NEW UNIT CPN ID PLATE CPN**

622-9210-007 622-9210-008 622-9210-207 622-9210-308 622-9210-309 622-9210-310 685-2613-033

622-9352-007 622-9352-008 622-9352-207 622-9352-308 622-9352-309 622-9352-310 685-2622-035

(2) Mark weight from existing identification plate onto new identification plate (CPN 685-2613-033 or 685-2622-035). Proceed to step 3.C.(5). (3) If identification plate on the unit being modified is a stamped one piece plate, order new stamped identification plate based on the new unit part number as listed in the following table. Proceed to step 3.C.(4).

**OLD UNIT CPN NEW UNIT CPN ID PLATE CPN**

622-9210-007 622-9210-008 622-9210-207 622-9210-308 622-9210-309 622-9210-310 685-2613-031

622-9352-007 622-9352-008 622-9352-207 622-9352-308 622-9352-309 622-9352-310 685-2622-033

(4) Mark new identification plate (CPN 685-2613-031 or 685-2622-033) with weight, serial number, and any previously marked service bulletins from existing identification plate.

Sep 16/09 TDR-94( )-34-508 Page 17

# Service Bulletin

(5) Mark new identification plate (CPN 685-2613-033/031 or 685-2622-035/033) with new unit part number following 622 9352- or 622-9210-, as listed in the following table. The new unit part number is identification of the installation of this service bulletin. Do not mark out Service Bulletin 508.

**OLD COLLINS PART NUMBER**  **NEW COLLINS PART NUMBER**  -007/008/207/308/309 -310 (6) Remove existing identification plate from the unit and replace it with the new identification plate marked in step 3.C.(5). N OT E : Refer to All Avionics Service Information Letter 3-03, titled "Disposal of Retired TSO Nameplates" for disposal of old unit identification plates. (7) Due to the change of the part number of this unit, the customer must be notified of the change by including the following statement, with the appropriate part numbers on the repair work sheet. "This unit was received with a part number of CPN 622-9352-007/008/207/308/309 for TDR-94 or CPN 622-9210-007/008/207/308/309 for TDR-94D and has been modified to a unit with a part number of CPN 622-9352-310 for TDR-94 or CPN 622-9210-310 for TDR-94D (refer to Service Bulletin 508). Installation of units modified in accordance with Service Bulletin 508 may require a change to the aircraft TC/STC data unless the new part number is already included in the data." N OT E : Installation of SB 508 is indicated by the Top Level CPN on the nameplate. SB 508 is NOT marked on the product modification plate.

Sep 16/09 TDR-94( )-34-508 Page 18

# Service Bulletin

Main Chassis Assembly (CPN 653-2254-XXX), Video Processor Circuit Card A6 and CPU I/O Programmed Circuit Card A5 Location Figure 1
Sep 16/09 TDR-94( )-34-508 Page 19

# Service Bulletin

CPU I/O Processor Circuit Card A5 (CPN 653-3674-003/004/005/006/007/008/009/010/011/012/013/014/015/016/019/020/021/022/023/024) Component and Modification Chart Location Diagram Figure 2 Sep 16/09 TDR-94( )-34-508 Page 20

# Service Bulletin

Video Processor Circuit Card A6 (CPN 687-0726-004/005/006/007), Partial Component Location Diagram Figure 3
Sep 16/09 TDR-94( )-34-508 Page 21

# Service Bulletin

Video Processor Circuit Card A6 (CPN 687-0726-004/005/006/007), Modification Chart Location Diagram Figure 4
Sep 16/09 TDR-94( )-34-508 Page 22

# Service Bulletin

Main Chassis Assembly, Modification Chart Location Diagram Figure 5
Sep 16/09 TDR-94( )-34-508 Page 23

# Service Bulletin

Transmitter Assembly Modification Figure 6
Sep 16/09 TDR-94( )-34-508 Page 24

# Service Bulletin

Transmitter Assembly, Modification Chart Location Figure 7
Sep 16/09 TDR-94( )-34-508 Page 25

# Service Bulletin

Video Processor Circuit Card A6 (CPN 687-0726-004/005/006/007), Partial Schematic Diagram Figure 8
Sep 16/09 TDR-94( )-34-508 Page 26