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BJC-2000
2.Home Position
Error
<Measure>
Visual check of carriage
drive mechanism
Correct ?
Yes
Carriage motor
operation check
Correct ?
Yes
Home position
sensor check
Correct ?
Yes
Replace logic board
<Cause>
The home position cannot be detected.
<Suspected Parts>
· Check for any paper jams, carriage belt
wear/deterioration/dislocation, deformation of the
carriage or carriage guide, scratching or bending in the
carriage shaft, etc.
· Move the carriage by hand and check that it moves
smoothly and there is no abnormal noise.
No
Repair/replace faulty parts
· Turns on during initialization?
· Out of sync?
No
Carriage motor check
Correct ?
Yes
Replace logic board
and check waste ink
absorbers
Measuring points Sensor
J5
Pin No. 30
While the power is on, open the front cover and remove
the BJ cartridge. Move the carriage's home position
sensor by hand and check.
No
Replace carriage
unit
·
MPU is faulty.
5-11
Home position sensor, carriage motor,
logic board, carriage ribbon cable
Measuring points Normal reading
J3
1-2
Pin No.
3-4
No
Replace carriage motor
Normal reading
Open
Low level
(Home position sense)
Closed
Highlevel
· Home position sensor is faulty
· Ribbon cable is loose
Part 5: Maintenance
Approx.11
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