Repair manual

3-13
TROUBLESHOOTING
Yes No
Check J7 Pin 1 to 2
5 vdc?
Yes No
Palette Works OK
But No LED
Check Logic Board
Test Points:
TP12 (GRND)
TP13 +5vDC
TP14 +12vDC
TP15 -12v DC
Check Power Supply
Fuse F1 OK?
Check Power Supply Voltages
on Connectors J3, J4, J5
Pin 1 -12v
Pin2 +12v
Pin3 (GRND)
Pin4 +5v (vcc)
Yes No
Yes No
Yes No
Check Wiring
& Connectors
Replace
Power Supply
Replace F1Diagnostics OK?
Check Wiring
& Connector
Replace Logic
Board
Replace LED
Chart 3