# Goodrich Service Bulletin 80232192-24-01 Copy: No revision named ("Goodrich - Service Bulletin"), 11 pages: PDF https://openairdocs.org/files/sha256/04/d1/04d1fe2d3207bfa1164953f0fe5434fcb76688b623a9c95866099a4a14b90edf; text https://openairdocs.org/service-documents/goodrich/sb-80232192-24-01/file/04d1fe2d3207.md. Rights: © Goodrich. Filed by the FAA in regulations.gov docket FAA-2012-0265; AD 2012-12-18 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. ## Details - Manufacturer: [Goodrich](https://openairdocs.org/service-documents/goodrich.md) - Type: Service bulletin (Service Bulletin) - Number: 80232192-24-01 - Page: https://openairdocs.org/service-documents/goodrich/sb-80232192-24-01 ## ADs that cite it (1) (OpenAirDocs) Newest first, with the revision each names, as OpenAirDocs read it from the AD's text. - [AD 2012-12-18](https://openairdocs.org/ad/2012-12-18.md), effective Jul 30, 2012: No revision named Also cited in [1 proposed AD](https://openairdocs.org/service-documents/goodrich/sb-80232192-24-01/proposed.md). ## Text (11 pages) Rights: © Goodrich. Filed by the FAA in regulations.gov docket FAA-2012-0265; AD 2012-12-18 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. This text is OCR from a scan. OCR can misread letters and numbers. Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 (OCR) GOODRICH SERVICE BULLETIN Number 80232192-24-01 Goodrich Power Systems Westfield Road Pitstone LU7 9GT England 0044 1296 663000 SERVICE BULLETIN STANDARD ELECTRICAL POWER - GCU A PT. NO. 80232192 AND 80231894/S2 INSPECTION/CHECK OF THE TRANSIENT SUPPRESSION DIODES INSTALLED INITIAL ISSUE OF SERVICE BULLETIN 80232192-24-01 AIRCRAFT APPLICABILITY DASSAULT FALCON 7X 1. Instructions A. The Service Bulletin was written under EASA Approval No. UK. 145.00858. B. The technical content of this document is approved under the authority of DOA No. EASA.21J.051. Copyright in this Service Bulletin and associated documents and drawings belongs to Goodrich Power Systems and all rights are reserved. No reproduction of all or part of this Service Bulletin shall be made without the prior written consent of Goodrich Power Systems. This document contains information that may be confidential and its disclosure to others requires the written consent of Goodrich Power Systems. ### Page 2 (OCR) GooDRIcH SERVICE BULLETIN Number 80232192-24-01 INTENTIONALLY BLANK ### Page 3 (OCR) GOODRICH SERVICE BULLETIN Number 80232192-24-01 1. Planning Information A. Effectivity (1) This Service Bulletin (SB) applies to the Goodrich Corporation GCU Cards Pt. No. 80232192 anc 80231894/S2 installed in the Left and Right Primary Power Distribution Box (PPDB), installed or the Falcon 7X aircraft. B. Concurrent Requirements (1) None. C. Reason (1) Dassault Aviation has performed an analysis of aircraft-level effects associated with degradation of 33 Volt Transient Voltage Suppression (TVS) Diode in the Primary Distribution Control Unit (PDCU) and Generator Control Unit (GU) printed circuit board assemblies. D. Description (1) The TVS Diodes have been categorised based on the severity of the effect. This SB gives the procedures necessary to identify the degradation of "Priority 1 and 2" TVS Diodes. E. Compliance recommendation (1) At the next removal of a GCU card. F. Approval (1) The technical content of this document is approved under the authority of DOA No. EASA.21J.051. G. Manpower (1) 0.25 Man hours H. Weight and Balance (1) None. I. Electrical Load Data (1) None. J. Software Accomplishment Summary (1) Not applicable K. References (1) This SB was written using Goodrich Engineering Report PG0900400ED and rework drg 80232216 as source data. L. Other Publications Affected Goodrich ACMM for the GCU CARD ASSEMBLY Part No. 80232192, ATA No. 24-61-52 will be revised to include the data contained in this SB. Goodrich CMM for the Left PPDB, Part No. SW02101, ATA No. 24-61-01 will be revised to reference the data contained in this SB Goodrich CMM for the Right PPDB, Part No. SW02201, ATA No. 24-61-02 will be revised to reference the data contained in this SB M. Interchangeability or Intermixability of Parts (1) Not applicable Initial Issue : Aug 13/09 80232192-24-01 Revision Date : Aug 13/09 ©: Goodrich Power Systems - 2009 All rights reserved. Page 1 of 9 ### Page 4 (OCR) GOODRICH SERVICE BULLETIN Number 80232192-24-01 2. Material Information A. Material - Price and Availability (1) Not Applicable. B. Industry Support Program (1) Not Applicable. C. Material Necessary for each Component/Engine (1) Not Applicable. D. Spare Parts Availability (1) Not Applicable. E. Re-identified Parts (1) None. F. Tooling - Price and Availability (1) The tools given below are necessary for this SB and are to be procured from the sources given. Prices and lead times for Goodrich tools are available on request. Qty Part Number Source Keyword 1 Commercially Available ESD Surface mat and wrist band 1 TE2-0658 Goodrich Power Falcon multi-channel Systems transorb tester (33V) 1 Commercially Available Power supply 48V D.C. 2 Locally Made Ground lead with 4mm plug terminations 2 Commercially Available Crocodile clip 3. Accomplishment Instructions A. General CAUTION: THE SPB CONTAINS ITEMS THAT ARE ELECTROSTATIC-DISCHARGE SENSITIVE (ESDS). OBEY APPROVED INDUSTRY PRECAUTIONS WHEN YOU TOUCH, REMOVE OR INSTALL PARTS. DAMAGE CAN OCCUR FROM ELECTROSTATIC DISCHARGE. NOTE: This SB is intended for use on a GCU that is removed from the PPDB and off the aircraft. (1) Place the GCU card on the ESD mat. (2) Connect a ground lead to the ground socket of the test-set and a suitable earth point. (3) Connect the DC plug from the Power Supply Unit (PSU) to the 48 volts socket on the side of the test-set. (4) Connect mains lead from the PSU to an applicable a.c. outlet and apply mains power. Initial Issue : Aug 13/09 80232192-24-01 Revision Date : Aug 13/09 ©: Goodrich Power Systems - 2009 All rights reserved. Page 2 of 9 ### Page 5 (OCR) GOODRICH SERVICE BULLETIN Number 80232192-24-01 (5) Push the "TEST" button on the test-set, make sure the 40 RED LEDs illuminate. NOTE: If, the RED LEDs do not illuminate the test set is damaged. B. Procedure (1) Plug the board into the GCU connector on the test-set (Ref. Fig. 1) . NOTE: The top side of the board (the side with the main connector) must face you. (2) Connect a ground lead to the socket "GROUND" on the test-set. Use a crocodile clip and connect the ground lead to the thermal plane of the GCU card (Ref. Fig. 2) . (3) Record serial number of the GCU card and the test-set on the Results sheet. (4) Push the "TEST" button on the test-set, record the status of all the LEDs on the Result Sheet Appendix 1. NOTE: This is to collect data for possible future enhancements. (5) Release the test button. (6) Push the "TEST" button on the test-set, and make sure the circuit LEDs listed (Ref. Table 1) are all GREEN. Table 1 LED Pass GCU Circuit No. Function RED LED GREEN LED Result 9 GLC3 AUX OFF ON PASS 39 GENOC OFF ON PASS (7) Release the test button. (8) If, a RED LED is ON or a GREEN LED is OFF (Ref. Table 1) the GCU card must be returned to Goodrich Power systems. C. Completion (1) Disconnect and remove the ground lead and crocodile clip from the thermal plane of the GCU card. (2) Remove the GCU card from the test-set. (3) Remove a.c. mains power and disconnect the PSU from the a.c. outlet. (4) Disconnect the PSU from the 48 volts socket on the side of the test-set. (5) Remove the ground lead from the ground socket of the test-set and the earth point. Initial Issue : Aug 13/09 80232192-24-01 Revision Date : Aug 13/09 ©: Goodrich Power Systems - 2009 All rights reserved. Page 3 of 9 ### Page 6 (OCR) GOODRICH SERVICE BULLETIN Number 80232192-24-01 GCU GROUND PDCU B PDCU A TEST 01 02 03 04 05 06 07 08 10 POCU AÙ BUS_TIE_MAN UTCALALST OLCELALAT ONCE A-ST OLC1_AL9T BO1LALST APUC 1_ALST OLC4L4_8T CABHI NOT_SHED BO_00 GENILOC GALLEY_OFF BENZ_0C THIS HEAOTOLGADA HEADT SLOADE SPARE SALADYILO FALLOFF OLE_AUX aCS_ON •0 00 •0 •0 •0 •0 •0 00 00 00 15 15 17 18 19 20 STBLAUNPLON BTG3LA_ST AFUC1_8_ST CABFLOFF OLOZ B_ST BATI_OP_OC_M 00 •0 00 00 •0 00 00 00 00 00 21 22 23 25 26 27 28 29 30 TARTMODE_ALST B_OMLWOW DEPHLOC EMERG_ISOL, O_ST HOW RA 00 00 •0 00 00 •0 00 00 00 00 31 32 33 35 36 37 38 39 40 MAT_WON BAT LOP_OC_OUT STARTMODE GENOFF BENOC •0 •0 00 00 00 •0 00 00 00 00 D7X_SB_2401_0002_01_ Test set TE2-0658 Figure 1 Initial Issue : Aug 13/09 80232192-24-01 Revision Date : Aug 13/09 ©: Goodrich Power Systems - 2009 All rights reserved. Page 4 of 9 ### Page 7 (OCR) GOODRICH SERVICE BULLETIN Number 80232192-24-01 ESD plane 000000 000 • 0 100000 30 808 JỘDỘI D7X_SB_2401_0001_01 GCU Figure 2 Initial Issue : Aug 13/09 80232192-24-01 Revision Date : Aug 13/09 Page 5 of 9 ©: Goodrich Power Systems - 2009 All rights reserved. ### Page 8 (OCR) GOODRICH SERVICE BULLETIN Number 80232192-24-01 INTENTIONALLY BLANK Initial Issue Revision Date Aug 13/0 80232192-24-01 ©: Goodrich Power Systems - 2009 All rights reserved. Page 6 of 9 ### Page 9 (OCR) GOODRICH SERVICE BULLETIN Number 80232192-24-01 Appendix 1 A. Complete the Results Table. NOTE: * Delete as necessary. Table 2 Results Table Board type Serial No. TE2-0658, Serial No. Circuit No. Function RED LED GREEN LED PDCU A: BUS_TIE_MAN ON* / OFF* ON* / OFF* PDCU B: GLC4_B_ST 2 PDCU A: BTC1_A_ST ON* / OFF* ON* / OFF* PDCU B: GLC3_B_ST GCU: STAR 3 PDCU A: GLC3_A_ST ON* / OFF* ON* / OFF* PDCU B: GALLEY_NOT_SHED GCU: TRIP 4 PDCU A: GLC2_A_ST ON* / OFF* ON* / OFF* PDCU B: BTC1_B_ST GCU: READY2LOADA 5 PDCU A: GLC1_A_ST ON* / OFF* ON* / OFF* PDCU B: CABIN_NOT_SHED GCU: READY2LOADB 6 PDCU A: BC1_A_ST ON* / OFF* ON* / OFF* PDCU B: SG_OC GCU: SPARE 7 PDCU A: EXT_PWR_ON ON* / OFF* ON* / OFF* PDCU B: GEN1_OC GCU: SG_RDY2LD 8 PDCU A: APUC1_A_ST ON* / OFF* ON* / OFF* PDCU B: GALLEY_OFF GCU: FAN_OFF 9 PDCU A: STARTMODE_A_ST ON* / OFF* ON* / OFF* PDCU B: BC1_B_ST GCU: GLC_AUX 10 PDCU A: GLC4_A_ST ON* / OFF* ON* / OFF* PDCU B: GEN2_OC GCU: GCS_ON Initial Issue : Aug 13/09 80232192-24-01 Revision Date : Aug 13/09 ©: Goodrich Power Systems - 2009 All rights reserved. Page 7 of 9 ### Page 10 (OCR) GOODRICH SERVICE BULLETIN Number 80232192-24-01 Circuit No. Function RED LED GREEN LED 11 PDCU B: GPC2_B_ST ON* / OFF* ON* / OFF* 12 PDCU B: BTC2_B_ST ON* / OFF* ON* / OFF* 13 PDCU A: SPARE_OGO ON* / OFF* ON* / OFF* PDCU B: GEN3_OC 14 PDCU A: BTC2_A_ST ON* / OFF* ON* / OFF* PDCU B: ISOL_TIED 15 PDCU A: WOW_A_L ON* / OFF* ON* / OFF* PDCU B: APUC1_B_ST 16 PDCU A: WOW_A_R ON* / OFF* ON* / OFF* PDCU B: BTC3_B_ST 17 PDCU A: STBY_PUMP_ON ON* / OFF* PDCU B: WOW_B_L 18 PDCU A: BTC3_A_ST ON* / OFF* ON* / OFF* PDCU B: CABIN_OFF 19 PDCU A: HSCB_SBEP_ON ON* / OFF* ON* / OFF* PDCU B: GLC2_B_ST 20 PDCU A: GPC1_A_ST ON* / OFF* ON* / OFF* PDCU B: BAT1_GP_OC_IN 21 PDCU B: SPARE_OG1 ON* / OFF* ON* / OFF* 22 PDCU B: BC2_B_ST ON* / OFF* ON* / OFF* 23 PDCU B: SPARE_CONT_CTL ON* / OFF* ON* / OFF* 24 PDCU B: GPC1_B_ST ON* /OFF* ON* /OFF* 25 PDCU B: STARTMODE_B_ST ON* / OFF* ON* / OFF* 26 PDCU B: GLC1_B_ST ON* / OFF* ON* / OFF* 27 PDCU B: B_GPU_WOW ON* / OFF* ON* / OFF* 28 PDCU B: GEN4_OC ON* / OFF* ON* / OFF* 29 PDCU B: EMERG_ISOL_B_ST ON* / OFF* ON* / OFF* 30 PDCU B: WOW_B_R ON* / OFF* ON* / OFF* 35 PDCU B: RAT_WOW ON* / OFF* ON* / OFF* 36 PDCU A: BATT_HEATER ON* / OFF* ON* / OFF* 37 GCU: STARTMODE ON* / OFF* ON* / OFF* 38 GCU: GENOFF ON* / OFF* ON* / OFF* Initial Issue : Aug 13/09 80232192-24-01 Revision Date : Aug 13/09 ©: Goodrich Power Systems - 2009 All rights reserved. Page 8 of 9 ### Page 11 (OCR) GOODRICH SERVICE BULLETIN Number 80232192-24-01 Circuit No. Function RED LED GREEN LED 39 PDCU B: BAT1_GP_OC_OUT ON* / OFF* ON* / OFF* GCU: GENOC Initial Issue : Aug 13/09 80232192-24-01 Revision Date : Aug 13/09 ©: Goodrich Power Systems - 2009 All rights reserved. Page 9 of 9 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.