Manual System Activation Fault

TASK 35-23-00-810-805-A
Manual System Activation Fault

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 35-23-00-710-001	Operational Check of Manual Mask Release
ASM 352301

3. Fault Confirmation
Subtask 35-23-00-710-058-A

A. Do the operational test of the manual mask release AMM 35-23-00-710-001.

4. Fault Isolation
Subtask 35-23-00-810-057-A

A. If the test confirms the fault:

Do a check of the PUSHBUTTON SW-OXYGEN/MAN ON (14WR) and replace it if necessary ASM 352301.

(1) If the fault continues:
(a) Do a check and repair the wiring if necessary between:

PB SW (14WR) pin 8 and CB (7WR)
PB SW (14WR) pin 7 and RELAY (25WR) connector A/B2
PB SW (14WR) pin 6 and CB (6WR)
PB SW (14WR) pin 5 and RELAY (25WR) connector A/B1
PB SW (14WR) pin 4 and CB (3WR)
PB SW (14WR) pin 3 and RELAY (25WR) connector A/A1
PB SW (14WR) pin 2 and CB (4WR)
PB SW (14WR) pin 1 and RELAY (25WR) connector A/A2,
ASM 352301.

Subtask 35-23-00-710-059-A

B. Do the test as given in the Para. 3.A.

5. Close-up
Subtask 35-23-00-860-054-A

A. Put the aircraft back to its initial configuration.

[Rev.8 from Aug 2018] 2026.04.04 04:33:39 UTC