Repair manual

3-11
TROUBLESHOOTING
Yes No
Check Power Supply
Fuse F1 OK?
Yes No
Replace After
Checking Incoming
AC Power
Replace Fuse F1ON/OFF
Switch OK?
Yes No
No Power / No LED
Line Cord OK?
Yes No
Check Power Supply Voltages
on Connectors J3, J4, J5
Pin 1 -12v
Pin2 +12v
Pin3 (GRND)
Pin4 +5v (vcc)
Repair or
Replace
Check Logic Board
Test Points:
TP12 (GRND)
TP13 +5vDC
TP14 +12vDC
TP15 -12v DC
Yes No
Replace Power
Supply
Diagnostics OK?
Yes No
Check Wiring
& Connectors
Check Wiring
& Connectors
Replace Logic
board
Chart 1