Loss of the Yellow Pressure Indication on the Triple Indicator (Electrical Failure)

TASK 32-44-00-810-803-A
Loss of the Yellow Pressure Indication on the Triple Indicator (Electrical Failure)

1. Possible Causes

C/B-L/G/Y BRK/PRESS/IND or C/B-ABCU &/Y BRK/PRESS IND [61GG]
wiring from the terminal block (7528VT) pin 2/F to the circuit breaker (61GG).

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
ASM 324401
AWM 324401

3. Fault Confirmation
Subtask 32-44-00-710-055-A

A. Test
(1) Do the operational test of the Alternate braking without anti skid.
(2) Make sure that there is no Yellow pressure indication on the triple indicator.
(a) If the circuit breaker (61GG) trips:

refer to Para. 4.B.

4. Fault Isolation
Subtask 32-44-00-810-052-A

A. If the circuit breaker (61GG) is closed and if the test confirms the fault:

do a check for 28VDC at pin 2/F of the terminal block (7528VT) AWM 324401.

(1) If there is 28VDC:

replace the C/B-L/G/Y BRK/PRESS/IND or C/B-ABCU &/Y BRK/PRESS IND [61GG] ASM 324401.

(2) If there is no 28VDC:

do a check and repair the wiring from the terminal block (7528VT) pin 2/F to the circuit breaker (61GG)..

Subtask 32-44-00-710-056-A

B. Test
(1) Do the operational test of the Alternate braking without anti skid.
(2) Make sure that there is a Yellow pressure indication on the triple indicator.

[Rev.8 from Aug 2018] 2026.04.04 04:31:43 UTC