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SC CODES
SC
Item
Detection Conditions
No.
SC195 Serial number
- Timing -
error
Just after the main switch is
turned on
- Condition -
The serial number entered or
stored in RAM is not correct.
SC301 Charge
- Timing -
current leak
When the charge corona unit
is on during printing or
process control
- Condition -
The current leak was detected
for 2 seconds.
SC302 Charge corona
- Timing -
grid voltage
When the charge corona unit
error
grid is on during printing or
process control
- Condition -
The feedback voltage is 4.8V
or higher, or the PMW value is
50% or higher for 500 ms
continuously.
Related
Possible Causes
SCs
• Incorrect serial
number
• RAM board is
replaced.
• Defective RAM
• Charge corona unit
not installed
properly
• Poor connection of
cables
• Defective high
voltage supply
board (C,G)
• Defective I/O
control board
• Defective main
control board.
Same as SC301
6
Troubleshooting Procedure
1. Check and re-enter the serial number properly.
NOTE: Contact your product specialist for the detailed
procedure.
1. Reinstall the charge corona unit properly or replace the
charge corona unit.
2. Reconnect the connectors on the high voltage supply
board (C,G), I/O control board, and main control board,
or check the cables.
3. Check and clean the charge corona unit receptacle.
4. Replace the high voltage supply board (C,G).
5. Replace the I/O control board.
6. Replace the main control board.
- Signals to Check -
• Leak detection: CN201-1 or TP224 on I/O control board
or TP162 on main control board
Same as for SC301
- Signals to Check -
• Feedback signal: CN201-3 or TP226 on I/O control
board or CN302-A4 or TP160 on main control board
• PWM: CN201-4 or TP237 on I/O control board
24 February 1999
Type
D
D
D
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