15 February 2006 B140/B246 SERIES SERVICE MODE
4-65
Trouble-
shooting
Z-fold timing unit fold timing sensor adjustment error
B246
784
The A/D (Digital/Analog) input
value did not change even after the
D/A (Digital/Analog) output value
changed.
• Fold timing sensor connector loose,
broken, defective
• Fold timing sensor defective
• Fold timing sensor, mylar covered with
paper dust
• Mylar disconnected.
Z-fold leading edge sensor adjustment error
B246
785
The A/D input value did not change
even after the D/A output value
changed.
• Leading edge sensor connector loose,
broken, defective
• Leading edge sensor defective
• Leading edge sensor, mylar covered with
paper dust
• Mylar disconnected.
Z-fold EEPROM error
B246
786
The write operation to the Z-folding
EEPROM failed after 2 attempts
• EEPROM defective
Finisher staple trimming hopper full B246
790 B
The staple waste hopper is full of
cut staples.
• If the hopper is full, empty the hopper
• If the hopper is not full, the hopper full
sensor is disconnected, defective
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