Gestetner G060, Руководство по обслуживанию

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SC TABLE
SM 4-21 G570
SC No. Item Definition Possible Cause
Related
SCs
Troubleshooting Procedure Type
SC 391-
01 Charge AC:
output error
391-01: K
391-02: Y
391-03: M
391-04: C The high voltage supply
board sends the feedback
signal (CN228-2 to 5;
MCYK). The BCU monitors
these feedback signals
every 8 ms. If the average of
the sampled data is not
within the control target 30
consecutive times, this SC
code is generated.
•
Power pack
disconnected
•
Charge receptacle or
terminal
•
Defective PCU bias
input terminal
•
Incorrect power pack
B/C output
•
Damaged cable
•
Defective BCU
1. Turn the main switch off and on.
2. Check the connector.
3. Check the PCU charge voltage input
(the spring/conducting shaft) or
replace the PCU.
4. Replace the power pack B/C.
5. Replace the cable.
6. Replace the BCU.
B
SC 460-
001 Thermistor 1
error (open
circuit) When the temperature
detected by thermistor 1,
which is at the left (fusing
unit) side of the laser optics
unit, is less than -30°C for
10 seconds consecutively,
the BCU determines that the
circuit is opened and
displays this SC code.
•
Thermistor 1
defective
•
Cable connection
error
•
BCU defect
1. Turn the main switch off and on.
2. Check the cable connections.
3. Replace the thermistor.
4. Replace the BCU. B
SC 460-
002 Thermistor 1
error (short
circuit) When the temperature
detected by the thermistor 1,
which is at the left (fusing
unit) side of the laser optics
unit, is higher than 70°C for
10 seconds consecutively,
the BCU determines that the
circuit is shorted and
displays this SC code
•
Thermistor 1
defective
•
Cable connection
error
•
BCU defect
1. Turn the main switch off and on.
2. Check the cable connections.
3. Replace the thermistor.
4. Replace the BCU. B