CHAPTER 7 SELF DIAGNOSIS
Code | Cause | Description |
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| • Copyboard drive assembly | • The copyboard position sensor (Q902) |
| (faulty operation) | goes ON when copying operation starts. |
| • Copyboard drive solenoid | • The copyboard position sensor (Q902) |
| (SL2; faulty) | is ON 0.8 sec after copying operation |
| • Copyboard position sensor PCB | has started. |
| (Q902; faulty) | • The copyboard position sensor (Q902) |
| • DC controller/DC power supply PCB | does not go ON within 5.5 sec after |
| (faulty) | copying operation has started. |
|
| • The copyboard does not reach the start |
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| position within a specific period of time, |
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| or it moves past the start position. |
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| • The copyboard position sensor (Q902) |
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| is ON 1.5 sec after the copyboard has |
|
| started moving forward from the start |
|
| position. |
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| • The copyboard position sensor (Q902) |
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| does not go ON 10.4 sec after the copy- |
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| board has started moving forward from |
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| the start position. |
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| • The copyboard position sensor (Q902) |
|
| does not go ON 1.2 sec or 4.7 sec after |
|
| the copyboard has started moving in |
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| reverse from the reversal position. |
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| • Control panel PCB (faulty) | • The scanning lamp has remained for 2 |
| • DC controller/DC power supply PCB | sec continuously at such times as not |
| (faulty) | prescribed. |
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| • Power supply frequency (error) | • The power supply frequency is higher |
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| than specified. |
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Note:
1.The copier does not use code ‘E1’, ‘E3’, ‘E4’, or ‘E5’.
2.After self diagnosis has gone ON, the copier may be reset by switching it OFF and then ON.
In the case of ‘E0’, however, the power is automatically turned OFF. To reset, disconnect the power plug once, open the upper cover, or wait about 5 minutes without any operation; during the period, the microprocessor remains powered and retains ‘E0’.
This consideration is to prevent the user from resetting the machine easily when the thermistor may have blown; otherwise, the fixing heater would become overheated, damaging parts near it.
3.Activation of self diagnosis forces the fixing heater (H1) and main motor (M1) OFF.