### ~ 

# GOODRICH SERVICE BULLETIN Number 8023219(}-24·01 Goodrich Power Systems Westfield Road Pitslone LU7 9GT England 

### 0044 1296 663000 

## SERVICE BULLETIN

STANDARD 

### ELECTRICAL POWER
-GCU A PT. NO. 80232190 AND 80231894/S2INSPECTION/CHECK

OFTHE 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. 8. The technical content of this document is approved under the authority of DOA No. EASA.21J.051.

Copyright in this SeMce Bulletinand associ<:!teddocuments and drawings belongs to Goodrich PowerSystems and aJllights are raserve<l. No reproduction of all orpartofthis Service Bulletin shall be madewithoutthe priorwritten consenl of Goodrich PowerSystems. This docUmentcontains infoonalion that may be confidential and its disclosure to others requires the written consent of Goodrich Power Systems_

## _.~...:- 

# GOODRICH SERVICE BULLETIN Number 

### 80232190-24-01

INTENTIONALLY BLANK..

### ~ 

# GOODRICH SERVICE BULLETIN Number 80232190-24-01 1. Planning Information A. Effectivily (1) This Service Bulletin (S8) applies to the Goodrich Corporation GCU Cards PI. No. 80232192 and 80231894/$2 installed in the left and Right Primary Power Distribution Box (PPOS), installed on the Falcon 7X aircraft. 8. Concurrent Requirements 

### (1) None. C. Reason (1) Oassault Aviation has performed an analysis ofaircraft-level effects associated with degradation of 33VoltTransienl Voltage Suppression (TVS) Diode inthe Primary Distribution Control Unit (PDCU) and Generator Control Unit (GCU) printed circuit board assemblies. 

### D. Description (1) The TVS Diodes have been categorised based on the severity of the effect. This S8 gives the procedures necessary to identify the degradation of ~Priority 1 and 2" lVS Diodes. E. Compliance recommendation (1) At the next removal of a GCU card. F. Approval (1) The lechnical content ofthis document isapproved 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 S8 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 S8. 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 ReVision Date :Aug 13/09 ©: Goodricll Power Systems. 2009 Allrights rese •..•• ed. 

# 80232190-24-01 Page 1 of 9

# ~.:- 

# GOODRICH SERVICE BULLETIN Number 80232190-24-{)1 

### 2. Material lnfonnaoon 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-identlfied Parts (1) None. 

### F. Tooling
- Price and Availability (1) The tools given below are necessary for this 58 and are to be procured from the sources given. Prices and lead times for Goodrich lools are available on request. Qty Part Number Source Keyword 1 

# · Commercially Available ESD Surface mat and wrist band 1 

### TE2-Q658 Goodrich Power Falcon multi-channel Systems transorb tester (33V) 1 

### · Commercially Available Power supply 48V D.C. 

### 2 · Locally Made Ground lead with 4mm plug terminations 

### 2 · Commercially Available Crocodile clip

3. Accomplishment Instructions A. General CAUTION: THE SPDS CONTAINS ITEMS THAT ARE ELECTROSTATIC-DISCHARGE SENSITIVE

(ESDS). OBEY APPROVED INDUSTRY PRECAUTIONS WHEN YOU TOUCH, REMOVE OR INSTALL PARTS. DAMAGE CAN OCCUR FROM ELECTROSTATIC DISCHARGE. NOTE: This S8 is intended for use on a GCU that is removed from the PPD8 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 Revision Date :Aug 13/09 @, Goodrich Power System.
- 2009 All ,J;jhlSreserved. 

# 80232190-24-01 Page 2 of 9

# ---==--- GOODRICH SERVICE BULLETIN Number 80232190-24-01 (5) Push the "TEST" button on the test-set, make sure the 40 RED LEOs illuminate. NOTE: If, the RED LEOs 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 aground lead to the socket "GROUND" on the test-set. Use acrocodile 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 ailihe LEOs on the Result Sheet Appendix 1. NbTE: This is to collect dala for possible future enhancements. (5) Release the test button. (6) Push the "TEST' button on the test-set, and make sure the circuit LEOs 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 GENGC 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 ofthe 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 lest-set. (5) Remove the ground lead from the ground socket of the test-set and the earth point.

Initial Issue :Aug 13/09 Revision Dale :Aug 13f09 ©: Goodrd, PowerSystems
-2009Allr~hts reserved. 

# 80232190-24-01 Page 3 of 9

# (i9 GROUND



### TEST 

# ~..:-



# GOODRICH SERVICE BULLETIN Number 80232190-24-01

GCU

PDCU B

PDCUA



## " 

# ., ., O' 

# ., " " " " pt>C~A 

### .''''-'''

...•

# - ""


### ..'


### ..'"

••• 0 •••••••• , <'"'-'-" 

### •........." .".A." 

## m....-_~ =v •• ' 

## .•.•.••••........ ~"

• ~CVD 

## •..•...•... 

# -~.

.•.. ~,----~=

,,<,......, 

### ~ 

## ..."""'_

## ...••

# -- ~

# . -...,
..,", 

# -~.

# -.. •. .,.,

## ...•••....... "

# .., 

# - .•.....•.."'

# . 

# .•.•....•

# - -.. ~ '-"~' 

### ~

# .. 

# -~ eo eo eo eo eo eo eo eo eo eo [ 

# .. " 

# .. ,

# . •• •• 

# .. [ 

# ,. •• 

# ,. 

# _0. 

# -' - -~

# - 

# - -~~ ~ 

# ~--~. 

# _. ~ 

# ..~ 

# - - -~.



# -- - - ~ 

# ._~

~ 

## eo eo eo e" eo eo e•• eo eo e"



## " n 

## " 

# ,. " 

# ,. " ~ 

# - ~ 

# ~. ,"""".l

# - - ~. ~".3O.P

# ..--....... ~ ~ 

# -'

# -' ~.'



### ~ 

# I eo eo eo eo eo eo e" eo eo e.,



## " n 

## " " ~ 

## " " 

# , " 

# _. -'

......~ 

# _. ..- _,V""

_ 

### ~ 

# ..- - 

# - eo eo eo e" eo eo e" e., e" e"

Tesl set TE2-D658 Figure 1

@: Go(}dnch Power Systems

..2009 All rights resen;ed. Iniliallssue Revision Date : Aug 13/09

:Aug 13/09 

# 80232190·24-01 Page 4 of 9o

Hype""'"

# I

o

Initial Issue : Aug 

### 13/09 Revision Date :Aug 13/09 ©, Goodrich PowerSystems· 2009All rightsreserved. 

# .-~ GOODRICH SERVICE BULLETIN Number 80232190·24·01

ESD plane



# Geu Figure 2



# 80232190-24-01 Page 5 of 9Initial tssue :Aug 13f09 Revision Date : Aug 13f09 ©: Goodrich Power Systems· 2009 Allrig~ts reselVed. 

# ~...:- GOODRICH SERVICE BULLETIN Number 80232190-24-01

INTENTIONALLY BLANK



# 80232190-24-01 Page 6 of 9Appendix 1 A. Complete the Results Table. NOTE: .•.Delete as necessary. 

# ---===:-

GOODRICH SERVICE BULLETIN Number 80232190·24-01

Table 2 Results Table 

# IBoard type 

# ISerial No.

Circuit No. Function RED LED GREEN LED 

### 1 PDCU A: BUS_TiE_MAN ON'" / OFF'" ON'" J OFF*

PDCU B: GlC4_B_ST 

### 2 PDCU A: BTC1_A_ST OW I

### OFF'" ON* 

### IOFF"

PDCU B: GLC3_B_ST GCU: STAR 

### 3 PDCU A: GLC3_A_ST 

### OWIOFF" 

### OW! OFF'

POCU B: GALLEY_NOT_SHED GGU: TRIP 

### 4 PDCU A: GLC2_A_ST 

### OWIOFF* ON" I OFF*

PDCU B: BTC1_8_8T GCU: READY2LQADA 

### 5 PDCU A: GlC1_A_ST OW f

### OFF" ON' I OFF*

PDCU B: CABIN_NOT_SHED GCU: READY2l0ADB 

### 6 PDCU A: BC1_A_ST 

### OW IOFF" ON* I OFF*

PDCU B: 5G_DC GCU: SPARE 

### 7 PDCU A: EXT_PWR_ON 

### OW j OFF* ON" f OFF*

PDCU B: GEN1 

### OC GCU: SG_RDY2LD 8 PDCU A: APUC1_A_ST ON* /OFF* OW IOFF*

PDCU B: GALLEY_OFF GCU: FAN_OFF 9 PDCU A: 3TARTMODE_A_ST ON' / OFF' ON" IOFF'

PDCU B: BC1_8_3T GCU: GLC

_AUX 

### 10 POCU A: GlC4 _A

_3T OW IOFF' OW IOFF'

PDCU B: GEN2_0C GCU: GCS_ON
Initial Issue : Aug 13/09 Revision Dale :Aug 13/09 ©: Goodrich Power Systems· 2Qll9All rigt>tsreserved. 

## 80232190-24-01 Page 7 of 9

### ~ 

# GOODRICH SERVICE BULLETIN Number 80232190-24-01 Circuit No. function RED LED 

### GREEN lED 

### 11 PDCU B: GPC2_B_ST 

### ON-IOFF" OW I

### OFF" 

### 12 POCU B: BTe2_B_5T ON' IOFF" 

### OW {OFF" 

### 13 PDCU A: SPARE_OGO 

### OW JOFF' OW/OFF"

PDCU B: GEN3~OC 

### 14 PDCU A: BTC2_A_ST 

### OWIOFF" OWIOFF"

PDGU 8: ISOL_TIED 

### 15 PDCU A: WOW_A_L ON" J OFF" 

### OWIOFF"

PDCU B: APUC1 

### _8_ST 

### 16 PDCU A: WOW_A_R ON" / OFF" OW I

### OFF"

PDCU B: BTC3_B_5T 

### 17 PDCU A: STBY_PUMP _ON ON" { OFF" 

### OW f OFF"

PDCU B: WOW_B_L 

### 18 PDCU A: BTC3_A_ST 

### ON"IOFF' ON' fOFF'

PDCU B: CABIN_OFF 

### 19 PDCU A: HSCB_SBEP _ON ON" 

### IOFF" 

### OW JOFF"

PDCU 8: GLC2_B_ST 

### 20 PDCU A: GPC1_A_ST ON" IOFF' ON" , OFF"

PDCU B: BAT1_GP _DC_IN 

### 21 PDCU B: SPARE_OG1 ON" 

### IOFF" ON" 

### IOFF' 

### 22 PDCU B: Be2_B_ST 

### ON' {OFF' ON" 

### IOFF' 

### 23 PDCU B: SPARE_CONT_eTl ON" 

### IOFF' ON" IOFF' 

### 24 PDCU B: GPC1_B_ST ON" {OFF" OW JOFF" 

### 25 PDCU B: 5TARTMODE_B_ST ON~ { OFF' OW j OFF" 

### 26 PDCU B: GLC1 _B_5T ON" 1OFF' ON~ 1OFF' 

### 27 PDCU B: B_GPU_WOW ON' 

### IOFF" OW 1OFF~ 

### 28 POCU B: GEN4_0C OW IOFF' 

### OW J OFF' 

### 29 POCU B: EMERGJ50L_B_ST ON' 

### IOFF" 

### OWIOFF· 

### 30 POCU B: WOW_B_R ON" 

### IOFF' 

### OWIOFF' 

### 35 POCU B: RAT_WOW ON' IOFF" ON" IOFF' 

### 36 POCU A: BATT_HEATER ON' IOFF' ON' 

### IOFF' 

### 37 GCU: STARTMODE ON" 

### IOFF' ON" 

### IOFF' 

### 38 GCU: GENOFF ON' IOFF* ON" JOFF'
Initial Issue :Aug 13/09 Revision Date :Aug 13/09 @',Goodrich Power Systems

_200!l All rights reserved. 

# 80232190-24-01 Page 8 of 9

### ~ 

# GOODRICH SERVICE BULLETIN Number 80232190-24-01 Circuit No. Function RED LED GREEN LED 

### 39 POCU B:BAn _GP_OC_OUT ON'/OFF~ ON" { OFF"



### GCU:GENoe

Initial Issue :Aug 13f09 Revision Date :Aug 13f09 ©: GondIic/l Power Systems

- 2009 AllrighlS resOT\leO. 

## 80232190-24"()1 Page 9 of 9