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24 February 1999
SC
Item
Detection Conditions
No.
SC630 RDS
- Timing & Condition -
communica-
The main control board
tion error
receives no response from
RDS when accessing it.
Even when this error is
detected, the copier does not
show the SC code and this SC
code is not logged. (Copier
functions are still working.)
SC690 Application
- Timing & Condition -
selection error
When the main CPU
communicates with CPUs on
other PCBs, the main CPU
does not receive response
from the others.
SC720 Sorter main
The main motor pulse output
motor error
state remains unchanged for
300 ms at start time, or for
100 ms during operation.
SC721 Sorter bin
The bin HP sensor has not
motor error
turned off 2,550 ms after the
bin goes up from the home
position.
Related
Possible Causes
SCs
• Poor connection or
damaged cable
• Defective line
adapter
• Defective
CSS/bank interface
board
• Defective main
control board
• Scanner IPU
firmware upgrade
• Poor connection of
connectors
• Defective scanner
IPU board
• Defective main
control board
• Main boards of
options
Defective motor
Defective sensor
(including connectors),
defective motor, or
motor overload
27
Troubleshooting Procedure
1. Check that the cables are properly connected on the
CSS/bank interface board and main control board or
check if the cables are damaged.
2. Check and/or change the setting of the line adapter or
replace it.
3. Replace the CSS/bank interface board.
4. Replace the scanner IPU board.
• If this SC code is displayed after the scanner IPU
firmware is changed, the IC card may still be in the slot.
Turn the main switch off and on after removing the IC
card.
1. Check if the connectors on the main control board,
scanner IPU board, and the main board on each option
are properly connected.
2. Replace the defective boards.
Defective motor: Test with SP5-804-120. Replace if
necessary.
Defective bin HP sensor: Check connections. Test using
SP5-803-124/125 (input check: bin home/bin rotation).
Replace the sensor if necessary.
Overload: Check the mechanism, including the gears.
Defective bin drive motor: Test with SP5-804-124.
Replace if necessary.
SC CODES
Type
B
D
D
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