Ricoh SP 8400DN Field Service Manual page 1253

SC No. Type
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SC No. Type
SC240-00 D
SC No. Type
SC272- D LD Driver Communication Error
01
If the value is not same when the machine reads and writes the same registration at the
machine start-up.
If the communication parity retries three consecutive times, the SC is generated.
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SC No. Type
SC272-10 D LD Driver Communication Error: Others
If the "Door Open" status does not change to "Door Close" after closing the door.
Error Name/Error Condition/Major Cause/Solution
Image processing ASIC defective
IPU, controller board not connected correctly or defective
Harness between IPU and LDB defective
Turn the power off/on.
Replace the harness between IPU and laser unit.
Replace the IPU board.
Replace the controller board.
Error Name/Error Condition/Major Cause/Solution
LD Error
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The LD error status of LD driver is asserted after the LD is initialized.
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The LD driver's error signal is detected during LD initialization.
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LD degradation (LD broken, shift of output characteristics etc.)
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The interface harness damaged or not connected correctly.
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LD driver defective
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Cycle the main power off/on.
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Replace the laser unit.
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Replace the harness.
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Replace the IPU board.
Error Name/Error Condition/Major Cause/Solution
CPU defective
IPU defective
BCU defective
Harness defective
Cycle the main power off/on.
Replace the laser unit.
Replace the harness.
Replace the IPU board.
Error Name/Error Condition/Major Cause/Solution
6.Troubleshooting
515