Question about Ricoh 6513 Copier
I have shut down and restarted but it still comes up. Anyone know exactly what this might be?
Where is the fuse ?
Posted on May 01, 2008
SC558 Abnormal zero
- Timing & Condition -
Zero cross signals
generated within certain
period do not reach a
• Poor connections
• Blown fuse
• Defective AC drive board
• Defective main control
• Defective I/O control
1. Make sure the following are connected
• CN212 and CN229 on the I/O control
• CN303 on the main control board
• CN7 on the AC drive board
2. Check the current through the signal lines
in the above harnesses.
3. Replace the fuse (FU101) if it is blown.
4. Test the AC drive board, I/O control
board, or main control board by checking
the signal line at each pin.
• Zero cross: CN7-5 on the AC drive board/
CN229-6, TP216, or CN212-B8 on the I/O
control board/CN303-B4 or TP120 on the
main control board
Any problems get back to me
Posted on Mar 11, 2008
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Posted on Jan 02, 2017
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