Canon STAPLER STACKER SS-72 Service Manual page 111

VI-13. Printer cannot become READY because "staple jam status" is output when the sta-
ples are not jammed.
<Possible causes>
1. Poor contact in connectors.
Action: Reconnect the connector J308 on the stapler, J8 on the intermediate PCB 1, J303
on the intermediate PCB 2 and J8 on the staple stacker driver PCB correctly.
2. Stapler failure
Action: Replace it.
3. Staple stacker driver PCB failure
Action: Replace it.
VI-14 Printer cannot become READY because "current tray full stop status" is output
when the tray currently used is not full.
<Possible causes>
1. Staple stacker driver PCB failure
Action: Replace it.
VI-15 Printer cannot become READY because "tray up/down motor overheat status" is
output when the motor is normal.
<Possible causes>
1. Poor contact in connectors
Action: Reconnect the connector J135 on the tray up/down motor temperature sensor and
connector J3 on the staple stacker driver PCB.
2. Tray up/down motor temperature sensor failure
Action: Replace it.
3. Staple stacker driver PCB failure
Action: Replace it.
CHAPTER 4
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