14 June, 2002 SERVICE CALL CONDITIONS
4-21
Trouble-
shooting
4.3 SERVICE CALL CONDITIONS
If the Call Service indicator is lit, one of the following conditions has occurred.
Symptom Error Code SC-code
The white plate scan data is below the target level. 1-04 0101
Charge leak current detected while the charge roller was
activated.
9-17 0302
No polygonal motor synchronization signal detected. 9-20 0322
Development leak current detected while the develop
roller was operating.
9-29 0391
For 200ms straight, the machine detects a PWM output
duty ratio of ≤ 10% despite a feedback voltage of ≤1V, or
a duty ratio of ≥ 50% despite a feedback voltage of ≥
2.5V.
9-29 0401
For 200ms straight, the machine detects a PWM output
duty ratio of ≤ 10% despite a feedback voltage of ≥ 4V,
or a duty ratio of ≥ 50% despite a feedback voltage of ≥
3.2V
9-29 0402
Main motor error 9-24 0500
Thermistor failure 9-22 0541
During fusing roller warmup, within a 1 minute period,
the fusing temperature fails to 1) rise from 25°C or more
below target to 20°C below target, 2) rise 3°C in the last
5 seconds or to a temperature above the first reading.
9-22 0542
During fusing roller warmup, the machine detects a
fusing temperature of 230°C or higher for 1 second.
9-22 0543
During printing, the machine detects a fusing
temperature of 130°C or lower for 1 minute.
9-22 0544
During printing, the machine detects a fusing
temperature change of ±25°C two times consecutively.
9-22 0546
The destination code in the PSU and fusing unit do not
match.
9-22 0547
During printing, the machine detects a fusing
temperature above the allowable error detection
maximum for 10 seconds.
9-22 0548
During printing, the machine detects a fusing
temperature below the allowable error detection
minimum of for 6 seconds.
9-22 0549
The fusing temperature fails to drop down to the standby
temperature within a specified period of time.
9-22 0550
During high temperature standby, the machine detects a
fusing temperature of 195°C or higher for 10 seconds.
9-22 0551
The machine detects a fusing temperature of 150°C or
lower 6 seconds during high temperature standby mode,
or 50°C or lower for 6 seconds during fax standby mode.
9-22 0552
To release an SC code indication relating to the fusing unit (9-22), check and
replace the fusing unit first. Then set printer switch 01 bit 0 to 1 and turn the power
off and on.
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