Ricoh MP C3004 Field Service Manual page 1008

6. Troubleshooting
SC No.
SC724-86
SC No.
SC761
SC761-03
SC761-04
1000
Type Error Name/Error Condition/Major Cause/Solution
B Stapler Motor Error
• HP sensor does not switch OFF even when the stapler motor is
driven for specified time (msec.) after the stapler HP sensor switches
ON (1st time is jam notification, 2nd time is SC notification).
• HP sensor does not switch ON even when the stapler motor is driven
for specified time (msec.) after the stapler HP sensor switches OFF
(1st time is jam notification, 2nd time is SC notification).
• Motor defective
• Connector disconnected
• Motor overload
• Home position sensor error
• Paper surface sensor error (*SC724-38, 70 only)
• Staple jam (*SC724-86 only)
Check if the SC occurs by opening/closing covers, and input/output
check. If the SC occurs again, do the following steps. Check if the SC
reoccurs by cycling the power after each step.
• The target parts are the motor and related HP sensor that SC
occurred.
1. Check if the connector of the target part is connected securely.
Reconnect the connector if it is disconnected, or loose.
2. Check the harness for the target part. Replace the harness if it is
disconnected, or damaged.
3. Check if the motor runs, sensors turn OFF/ON, 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
Bridge Unit BU3070 (D685) or Side Tray Type M3 (D725) Error
B Protection Device Intercept Error 5V
B Protection Device Intercept Error 24V