Ac Power Service Check - Lexmark Optra SC 1275 Service Manual

AC Power Service Check

FRU
1 Voltage
2 Power Cord
3 • Fuse F1, F2
• Switch (S1)
4 • Power Sup-
ply (PU1)
• Mechanical
Controller
Board
(PWB-A)
2-40
Action
Be sure the switch is on and the power cord is
firmly plugged into the printer. Be sure the correct
voltage is present at the outlet.
Check the power cord for continuity.
The power supply fuses may be blown. Unplug the
machine and check fuses F1 and F2 on the power
supply (PU1) for continuity. If the fuses are good,
check the power switch connector for continuity.
The power supply may be defective.
The mechanical controller board may be defective.