Ricoh AC205 Service Manual - Page 104

Cover Open 2, Defective Motor Operation, No Power

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MACHINE MALFUNCTIONS 4.4.7 COVER OPEN 2 Description: "Cover Open" message does not appear on the LCD when the front cover is open. Cause Solution 1. "Open Cover" microswitch is stuck or 1. Perform the cover sensor test in Tech damaged. Mode to check cover switch operation. 2. Faulty connection between the switch and Replace the switch if necessary. the main PBA. 2. Replace the main control board or cover open switch if necessary. 4.4.8 DEFECTIVE MOTOR OPERATION Description: Main motor does not operate and paper is not fed into the machine. In this condition, Jam 0 appears. Cause Solution Main motor harness or motor PCB are faulty. Check the motor harness and connectors. Replace if necessary. Replace the main PBA if the problem stays. • Use EDC mode to check motor operation. 4.4.9 NO POWER Description: LCD panel does not come on when the machine power is turned on. Cause Solution 1. Power input and SMPS output are abnormal. 1. Replace the power supply cord or SMPS. Replace fuses if necessary. 2. Normal start-up sounds are heard but the LCD does not come on. 3. LCD does not come on and no sounds are heard after the SMPS is replaced. 2. Replace the operation panel. 3. Replace the main PBA. B273 4-18 SM

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MACHINE MALFUNCTIONS
B273
4-18
SM
4.4.7 COVER OPEN 2
Description:
“Cover Open” message does not
appear on the LCD when the front
cover is open.
Cause
Solution
1.
“Open Cover” microswitch is stuck or
damaged.
2.
Faulty connection between the switch and
the main PBA.
1.
Perform the cover sensor test in Tech
Mode to check cover switch operation.
Replace the switch if necessary.
2.
Replace the main control board or cover
open switch if necessary.
4.4.8 DEFECTIVE MOTOR OPERATION
Description:
Main motor does not operate and paper is not fed into the machine.
In this condition, Jam 0 appears.
Cause
Solution
Main motor harness or motor PCB are faulty.
Check the motor harness and connectors.
Replace if necessary. Replace the main PBA
if the problem stays.
•
Use EDC mode to check motor operation.
4.4.9 NO POWER
Description:
LCD panel does not come on when the machine power is turned on.
Cause
Solution
1.
Power input and SMPS output are
abnormal.
2.
Normal start-up sounds are heard but the
LCD does not come on.
3.
LCD does not come on and no sounds
are heard after the SMPS is replaced.
1.
Replace the power supply cord or SMPS.
Replace fuses if necessary.
2.
Replace the operation panel.
3.
Replace the main PBA.