Ricoh D104 Field Service Manual page 708

6. Troubleshooting
• Over current or a defective element breaks the circuit.
3. Abnormal power supply
•The required voltage is not supplied to the devices.
4. Overheat/overcooling
• The environment is inappropriate for the board (the scanner unit).
5. Static electricity
• Static electricity of a high voltage occurs during the test.
6. Others
• The scanner and IPU are incorrectly connected.
When you have completed a check, turn the main switch off and on before you do another check. When
you have completed all necessary checks, turn the main switch off and on.
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