Transfer of the CAPT PFD Image on the CAPT ND not Possible

TASK 31-63-82-810-809-A
Transfer of the CAPT PFD Image on the CAPT ND not Possible

1. Possible Causes

P/BSW-PFD/ND XFR, CAPT [9WT1]
RELAY BOX-CAPT PFD-ND XFR (20WT1)
wiring
DMC-1 [1WT1]
DMC-3 [1WT3]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 31-60-00-860-001	EIS Start Procedure
AMM 31-60-00-860-002	EIS Stop Procedure
AMM 31-63-34-000-001	Removal of the DMC
AMM 31-63-34-400-001	Installation of the DMC
ASM 316801

3. Fault Confirmation
Subtask 31-63-82-865-050-A

A. Table of the circuit breakers used in this procedure:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	EIS/RLY/BOX/CAPT	17WT1	E08
** ON A/C ALL
49VU	EIS/PFD CAPT/SWTG	22WT1	E04
49VU	EIS/ND CAPT/SWTG	23WT1	E02

Subtask 31-63-82-860-066-A

B. Job Set-up
(1) Do the EIS start procedure (CAPT PFD and CAPT ND only) AMM 31-60-00-860-001.
(2) When the PFD and the ND images come into view on the CAPT PFD and the CAPT ND:

push the CAPT PFD/ND XFR pushbutton switch (9WT1) on the panel 301VU.

Subtask 31-63-82-700-066-A

C. Test
Make sure that the transfer is not possible.

4. Fault Isolation
Subtask 31-63-82-810-066-A ** ON A/C NOT FOR ALL

A. If the transfer is not possible:

Make sure that the circuit breaker EIS/RLY/BOX/CAPT (17WT1) is not tripped or faulty
Make sure that the circuit breaker EIS/PFD CAPT/SWTG (22WT1) is not tripped or faulty
Make sure that the circuit breaker EIS/ND CAPT/SWTG (23WT1) is not tripped or faulty

(1) If the fault continues:

replace the P/BSW-PFD/ND XFR, CAPT [9WT1]

(2) If the fault continues:

replace the RELAY BOX-CAPT PFD-ND XFR (20WT1).

(3) If the fault continues:

do a check and repair the wiring from CAPT PFD/ND XFR pushbutton switch (9WT1) pins 1, 2 to CAPT PFD-ND transfer relay box (20WT1) pins 1D, X2.

Subtask 31-63-82-810-066-B ** ON A/C NOT FOR ALL

A. If the EIS-DMC selector switch (18WT) is at NORM and you cannot get the image on the CAPT ND DU:

do a check for a ground signal at the pin AB-2A of the DMC1 (1WT1)

(1) If there is a ground signal:

replace the DMC-1 [1WT1] AMM 31-63-34-000-001 and AMM 31-63-34-400-001.

(2) If there is no ground signal :

do a check and repair the wiring from the pin AB-2A of the DMC1 (1WT1) to the first terminal block ASM 316801

Subtask 31-63-82-810-126-A ** ON A/C NOT FOR ALL

B. If the EIS-DMC selector switch (18WT) is at CAPT/3 and you cannot get the image on the CAPT ND DU:

do a check for a ground signal at the pin AB-2A of the DMC3 (1WT3)

(1) If there is a ground signal:

replace the DMC-3 [1WT3] AMM 31-63-34-000-001 and AMM 31-63-34-400-001.

(2) If there is no ground signal :

do a check and repair the wiring from the pin AB-2A of the DMC3 (1WT3) to the first terminal block ASM 316801

Subtask 31-63-82-810-127-A ** ON A/C NOT FOR ALL

C. If you cannot get the image at the CAPT ND DU when the EIS DMC selector switch is at NORM or at CAPT/3 position:

do a check for a ground signal at the pin 2 of the CAPT PFD/ND XFR pushbutton switch (9WT1)

(1) If there is no ground signal :

do a check and repair the wiring from the pin 2 of the CAPT PFD/ND XFR (9WT1) to the first terminal block ASM 316801

(2) If there is a ground signal:

do a check and repair the wiring from the pin 1 of the CAPT PFD/ND XFR (9WT1) to the first terminal block ASM 316801

(a) If the wiring is correct:

replace the P/BSW-PFD/ND XFR, CAPT [9WT1] .

Subtask 31-63-82-700-067-A

D. Push the CAPT PFD/ND XFR pushbutton switch (9WT1) and make sure that the transfer is possible.

5. Close-up
Subtask 31-63-82-860-067-A

A. Do the EIS stop procedure AMM 31-60-00-860-002.

[Rev.8 from Aug 2018] 2026.04.04 04:31:15 UTC