GBC Shredmaster 5160X, Service Manual, Page: 7 / 24

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5.O TROUBLESHOOTING
5.4 Testing Electrical Components (cont.)
Circuit Breaker
- Continuity should be read across the two terminals
when the breaker pin is pushed in and Infinity is read when tripped.
Forward Contactor -
Set dvm for 200VAC. Check output voltage @
terminal 2T1 (black lead) and terminal block point Z (gray lead) for 213VAC
when the sensors are blocked and in the run mode. Contactor resistance across
A1 & A2 should read 140 ohms.
Reverse Contactor -
Set dvm for 200VAC. Check output voltage @ terminal
4T2 & 6T3 for 115VAC when the control switch is depressed in the reverse
position. Contactor resistance across A1 & A2 should read 140 ohms.
Control Board Output Voltages -
Set dvm to read 200 VAC.
•
Pc board output voltage to the forward contactor should read 115VAC across
pins 6 & 7 with the sensors blocked and in the run position.
•
Pc board output voltage to the reverse contactor should read 115VAC across
pins 6 & 8 with the sensors blocked and in the reverse mode.
•
Pc board output voltage to the control switch should read 115VAC across pins
1 & 3 and 2 & 3 when the control switch is in the off position.
•
Pc board output voltage to the emitter and receiver should read 3.14dc across
pins 3 & 4 and .10vdc across pins 1 & 2 when the emitter and receiver are
disconnected.
•
Pc board output voltage to the safety sensors should read 11.82vdc between
pins 1 & 2 of x5 and x6 when both sensors are disconnected.