Ricoh SP 8400DN Field Service Manual page 1261

Ricoh a3 size black and white laser printer.
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SC No.
Type
Error Name/Error Condition/Major Cause/Solution
2.4 V or more (humidity sensor)
Temperature/Humidity sensor is not set (connector disconnected or broken)
Temperature/Humidity sensor defective
Reconnect the connector.
Replace the connector.
Replace the temperature/humidity sensor.
6.Troubleshooting
523

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