Ricoh SP 200 Specifications Page 218

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SC324: LD drive current over
-Definition- [B]
The LD drive board applies more than 100 mA to the LD.
- Possible causes -
LD unit defective (not enough power, due to aging)
Poor connection of the interface harness which connects the LD unit and
the BiCU board
Temperature around the LD unit is too high
SC390: TD sensor error 1
-Definition- [B]
The TD sensor outputs less than 0.5V, 20 s after the TD sensor initial
setting has been performed.
- Possible causes -
TD sensor abnormal
Poor connection of the PCU
SC391: Development bias leak
-Definition- [B]
A development bias leak signal is detected.
- Possible causes -
Poor connection of the PCU
High voltage supply board defective
SC393: TD sensor error
2
-Definition- [B]
TD sensor output voltage falls out of the adjustment range (2.0
±
0.2 V)
after the TD sensor initial setting has been finished.
- Possible causes -
TD sensor abnormal
Poor connection of the PCU
1 August 1996 SC CODE DESCRIPTIONS
7-5
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