TM 10--3510--221--24
0106 00--1
TYPICAL DC OUTPUT SIGNAL FAULT
0106 00
THIS WORK PACKAGE COVERS:
Troubleshooting Typical DC 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 PCB.
Does LED come on?
YES Go to step 3.
NO Go to step 8.
3. Check for >11 VDC between odd numbered output terminal on SSR PCB (where 12 VDC power from TB2
is connected) and PS1 terminal (COM).
Is >11 VDC present?
YES Go to step 4.
NO Go to NO +12 VDC POWER AVAILABLE FAULT (WP 0100 00).
4. Use maintenance menu to activate suspect output signal while checking for >11 VDC between even
numbered output terminal (for suspect signal) on SSR PCB and PS1 terminal (COM).
Is >11 VDC present?
YES Go to step 5.
NO Go to step 6.
5. Use maintenance menu to activate suspect output signal while checking for > 11 VDC across (+) and (--)
terminals of suspect component.
Is > 11 VDC present?
YES Replace suspect component.
NO Check wire connections between suspect component and SSR PCB 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).
