2.12 CODE #53 — FUSING OVERHEAT
- Definition -
The temperature detected by the thermistor becomes higher than 240°C.
- Possible Causes -
•
Thermistor short
•
Defective ac drive board
•
Defective main board
•
Fusing harness shorted
- Action -
Clear the service call condition.
Check the voltage at TP107 on the main board.
More than
Less than
3.45 volts
3.45 volts
Replace the main board.
Has the thermistor shorted?
No
Yes
Replace the thermistor.
Check the voltage at CN114-4 on the main board.
24 volts 0 volts
Replace the main board.
Replace the ac drive board or check the fusing harness.
A151/A152
6-44
FSM
Summary of Contents for A151
Page 1: ...SERVICE MANUAL PN RCFM3213 A151 A152 A202 A203 RICOH GROUP COMPANIES ...
Page 2: ...SERVICE MANUAL A151 A152 A202 A203 RICOH GROUP COMPANIES ...
Page 3: ...A151 A152 A202 A203 FIELD SERVICE MANUAL PN RCFM3213 ...
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Page 27: ...OVERALL MACHINE INFORMATION ...
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Page 33: ...GUIDE TO COMPONENTS ...
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Page 43: ...INSTALLATION ...
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Page 55: ...SERVICE TABLES ...
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Page 95: ...REPLACEMENT AND ADJUSTMENT ...
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Page 193: ...TROUBLESHOOTING ...
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Page 251: ...DOCUMENT FEEDER A296 ...
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Page 277: ...A202 A203 SERVICE MANUAL ...
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Page 337: ...DOCUMENT FEEDER A662 ...
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Page 359: ...TECHNICAL SERVICE BULLETINS ...
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Page 372: ...Tech Service Bulletin No 3013 3213 008 Page 2 of 3 Continued ...
Page 373: ...Tech Service Bulletin No 3013 3213 008 Page 3 of 3 ...