Ricoh MP C3004 Field Service Manual page 1010

6. Troubleshooting
SC No.
SC No.
SC791-00
SC No.
SC792-00
1002
Type Error Name/Error Condition/Major Cause/Solution
When original source of 5V power supply is ON, protection device
intercept of 24V power system is detected.
In 24V power supply system:
• Motor defective
• Solenoid defective
• Harness short- circuit
Remove the jammed paper or slip of paper from the tray, and check if the
SC occurs by turning the main power OFF then ON. If the SC occurs
again, do the following steps. Check if the SC reoccurs by cycling the
power after each step.
1. Check if all connectors in tray 1, 2, and optional upper/lower trays
are connected securely. Reconnect the connectors if they are
disconnected, or loose.
2. Check the harness in tray 1, 2, and optional upper/lower trays.
Replace the harness if it is disconnected, or damaged.
3. Check if the motor runs, has no overloads, and is properly driven.
Replace the parts if there are any defects.
4. Check if there are any signs of a short circuit. Replace the parts if
there are any defects.
Type Error Name/Error Condition/Major Cause/Solution
D No bridge unit when finisher is present
When power supply is switched on or paper is transported, finisher set is
detected but bridge unit set is not detected.
(during internal finisher connection, not detected)
• Bridge unit not attached
• Bridge unit defective
• Reset the bridge unit
• Turn the main power OFF/ON.
Type Error Name/Error Condition/Major Cause/Solution
B No finisher, bridge unit provided