Loss of the DMC1/3 DATA Detected by the FWCs

TASK 31-63-82-810-848-A
Loss of the DMC1/3 DATA Detected by the FWCs

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 31-50-00-710-002	Operational Test of the Flight Warning Computer (FWC)
ASM 316103
AMM 31-63-34-000-001	Removal of the DMC
AMM 31-63-34-400-001	Installation of the DMC

3. Fault Confirmation
Subtask 31-63-82-740-076-A

A. Test
(1) Do the operational test of the Flight Warning Computer (FWC) AMM 31-50-00-710-002.

4. Fault Isolation
Subtask 31-63-82-810-133-A ** ON A/C NOT FOR ALL

A. If the test gives the maintenance status DMC1/3:

do a check of the wiring from the DMC1 (1WT1) pins AB/1E, 1F to the FWC1 (1WW1) pins AB/5G, 5H ASM 316103.

(1) If there is no continuity:

(2) If there is continuity:

do a check of the wiring from the DMC1 (1WT1) pins AA/11G, 11H to the FWC1 (1WW1) pins AE/5G, 5H ASM 316103.

(a) If there is no continuity:

(b) If there is continuity:

do a check of the wiring from the DMC1 (1WT1) pins AB/1E, 1F to the FWC2 (1WW2) pins AB/5G, 5H ASM 316103.

1 If there is no continuity:

2 If there is continuity:

do a check and repair the wiring from the DMC1 (1WT1) pins AA/11G, 11H to the DMC3 (1WT3) pins AA/11G, 11H ASM 316103.

a If the fault continues:

b If the fault continues:

Subtask 31-63-82-810-133-B ** ON A/C NOT FOR ALL