Ricoh SP 8400DN Field Service Manual page 1259

SC Tables: SC4xx (Image Processing 2: Transfer/ Separation,
Cleaning and others)
SC440-00 to SC498-00
SC No. Type
SC440- D High Voltage Power Source: Paper Transfer : Output Error
00
The machine detects the error detection signal "L (unexpected)" 10 times for 200 msec
consecutively when monitoring the error signal every 20 msec during outputting the PWM
signal.
Hardware error
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Load error
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SC No. Type
SC452- D Transfer Roller Contact Motor Error
00
When the machine does not detect the high/low signal for a specified time after the transfer
roller contact motor has been turned on.
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Error Name/Error Condition/Major Cause/Solution
Input / Output connector is disconnected.
Input / Output harness is short-circuited.
BCU error (signal error)
HVPS defective
Transfer roller's impedance increases.
Transfer unit is not set properly.
Cycle the main power off/on.
Reconnect or replace the harness of the HVPS (power pack).
Reconnect or replace the harness between the BCU and the HVPS.
Reset or replace the transfer unit.
Check if the contact and separation movement of the transfer unit works correctly.
Replace the HVPS.
Replace the BCU.
Error Name/Error Condition/Major Cause/Solution
Motor overload, Motor defective
Connector disconnected
Harness broken
Interlock mechanism is defective.
Cycle the main power off/on
Check if the contact and separation movement of the transfer unit works correctly.
Replace the transfer roller contact motor.
6.Troubleshooting
521