Lexmark 11C0200 Service Manual - Page 75

Lexmark 11C0200 - Optra SC 1275 Color Laser Printer Manual

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AC Power Service Check FRU 1 Voltage 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. 2 3 Power Cord • Fuse F1, F2 • Switch (S1) 4 • Power Supply (PU1) • Mechanical Controller Board (PWB-A) 2-40

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2-40
AC Power Service Check
FRU
Action
1
Voltage
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.
2
Power Cord
Check the power cord for continuity.
3
•
Fuse F1, F2
•
Switch (S1)
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.
4
•
Power Sup-
ply (PU1)
•
Mechanical
Controller
Board
(PWB-A)
The power supply may be defective.
The mechanical controller board may be defective.