Gestetner G060 Service Manual page 503

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