Operation Manual

6.2.2 Action
a) Error displays
<Cause> During initialization, the carriage print position is not
corrected. (The differential between the carriage travel
in each direction is outside the correction range.)
<Suspected parts> Carriage unit, carriage belt,
carriage cable, carriage shaft,
guide rail, idler pulley, logic board
<Measure>
Part 5: Maintenance
BJC-7100
5-16
1. Print Position
Correction Error
Buzzer: 8 times
ERROR indicator: Blinks twice
Visually check
carriage drive.
OK?
Reconnect power supply.
Check operation
of carriage drive.
Check home position
sensor.
Replace logic board.
OK?
OK?
OK?
Replace carriage unit. Replace carriage cable.
Service or replace
faulty part.
A
No
Yes
Yes
No
Yes
No
No
Yes
• Check for paper jams, wear and tear and removal of carriage belt;
• Carriage with faulty idler pulley assembly operation;
• Carriage shaft distortion, scratches, insufficient lubrication, etc.
• Does the carriage move smoothly when moved manually?
See "4. 2. 2 Carriage unit" (page 5-4) for how to release the carriage lock.
• Does the carriage motor run during initialization?
• Is the carriage drive out of sync?
• Are there any problems in the carriage belt or idler pulley?
• Are there any abnormal noises?
Measuring point
IC1 (MPU)
Pin No. 28
Sensor
Open
Closed
Normal value
Low level
High level (sensing)
• Check the measuring point while manually moving
the carriage with the power ON. (This is easier with
the sheet feeder removed.)
• Faulty MPU
• Faulty PCB
soldering/conductivity
• Faulty carriage board.
*: See "CAUTION" on page 1-14.
Check carriage cable
conductivity.
Measuring point
Carriage ribbon cable (28pin)
Pin Nos. 6 and 7
28
1
6
7