4-70 WorkCentre C2424 Service Manual
Verifying Scanner Power Supply Operation
1. Open the electronics module and observe the +24 VDC LED. If the LED is ON,
the scanner power supply is operational.
2. If the LED is blinking, there is a problem with the document feeder, scanner
power supply or exit module board.
3. Isolate the problem board:
a. Turn the system off and disconnect the document feeder. Turn the system
back on. If the LED is still blinking the problem is not with the document
feeder.
b. Disconnect the scanner assembly. Turn the system back on, if the LED is still
blinking the problem is not with the scanner assembly.
c. Check the exit module (MEP) board LEDs, see "Scanner/Exit Module Power
Supply and MEP (Exit Module) Board" on page 10-8. If the +24 V and +5 V
LEDs are on, the exit module (MEP) board is operating correctly.
d. If the +24 VDC LED is still blinking, replace the scanner power supply.
4. If the +24 V LED in the electronics module is off, there could be a problem with
the scanner power supply or with the in-line fuse in the electronics module.
5. If the problem still persists, see "Verifying Power Supply Operation - Print
Engine" on page 4-71
s2424-27
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