TM 10--3510--221--24
0104 00--1
TYPICAL AC OUTPUT SIGNAL FAULT
0104 00
THIS WORK PACKAGE COVERS:
Troubleshooting Typical AC Output Signal Fault
INITIAL SETUP:
Maintenance Level
Materials/Parts
Unit
Tools and Special Tools
Equipment Conditions
Tool Kit, General Mechanics (Item 1, WP 0272 00)
Power must be applied at main control
Multimeter (Item 2, WP 0272 00)
enclosure (WP 0010 00).
1. Open door on main control enclosure. Verify SW1 and SW2 are ON.
2. Use maintenance menu control outputs function (WP 0010 00) to activate suspect output signal while
monitoring corresponding LED on SSR PCB3.
Does LED come on?
YES Go to step 3.
NO Go to step 8.
3. Check for >100 VAC between odd numbered output terminal on SSR PCB3 (where power from TB2 is
connected) and TB1 terminal (N).
Is >100 VAC present?
YES Go to step 4.
NO Check wire connections between SSR PCB3 and TB2. Repair as necessary
4. Use maintenance menu to activate suspect output signal while checking for >100 VAC between even
numbered output terminal (for suspect signal) on SSR PCB3 and TB1 terminal (N).
Is >100 VAC present?
YES Go to step 5.
NO Go to step 6.
5. Use maintenance menu to activate suspect output signal while checking for > 100 VAC across (+) and (--)
terminals of suspect component.
Is > 100 VAC present?
YES Replace suspect component.
NO Check wire connections between suspect component and SSR PCB3 and between suspect
component and TB2. Repair as necessary.
6. Position SW2 to OFF.
7. Check 5 amp fuse next to suspect SSR for continuity.
Does fuse have continuity?
YES Replace SSR (WP 0236 00).
NO Replace 5 amp fuse (WP 0237 00).
