3-126 Phaser 7500 Printer Service Manual
Error Messages and Codes
NOHAD Temperature Sensor Fail
The NOHAD Thermistor error was detected.
Applicable Chain-Link Code
• 042-604: NOHAD Temperature Sensor Fail
Initial Actions
• Power cycle the printer.
• If the problem persists, follow the procedure below.
1. Check the connection between the NOHAD Thermistor P130 and the MCU
PWB J414 for open circuit, short circuit, and poor contact. Also check whether
there is poor connection or debris at the detection section of the NOHAD
Thermistor.
2. If no problems are found, replace the following parts in sequence:
• NOHAD Thermistor Assembly (PL5.2.11)
• MCU PWB (REP 18.12, page 8-202)
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ NOHAD Thermistor Assy,
PL5.2.11
■ MCU PWB, PL18.3.6
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