Operation Manual

<Cause> Sheet feeder not initialized during printer initialization.
<Suspected parts> Sheet feeder unit, pickup roller,
sheet feeder drive gear,
paper feed motor drive transmission
gear, slide lock lever, logic board
<Measure>
5-19
BJC-7100
Part 5: Maintenance
4. Sheet Feeder
Error
Beeper: 8 times
ERROR indicator: Blinks 5 times
Turn on power again.
Check operation
of sheet feeder unit.
Check platen paper
feed motor drive
transmission gear.
OK?
OK?
Yes
No
Yes
No
• Check the movements of the parts (gears, etc.) inside the sheet
feeder.
• Remove the sheet feeder unit and manually rotate the drive gears
to check that the pickup roller, etc., operates correctly and smoothly.
• Visually check the appearance and operation of the paper feed
rollers and power switching gears, which transmit the power of
the paper feed motor.
• Simultaneously check the operation of the purge unit's slide lock
lever, which locks the power switching unit.
Visually check operation
of sheet feeder drive.
Does error recur?
Yes
No
Turn the power on and
off several times, and quit
if the error does not recur.
Service/replace
faulty parts.
Replace logic board.
• Faulty pickup roller
sensor
• Faulty MPU
• Faulty PCB
soldering/conductivity
Service/replace
faulty parts.