<Symptom>
• The print is blurred.
• White streaks appear.
<Cause>
The BJ cartridge, carriage ribbon cable, purge unit, or
paper feed unit is defective (missing gear teeth).
<Measure>
5-27
BJC-50
Part 5: Maintenance
5. Print Defect <2>
White Streakes
Appear.
No
Yes
Is the test
result bad?
No
Yes
Remove and reinstall
the BJ cartridge.
END
Use printing paper that
meet the specifications.
Yes
No
Do a test print.
END
1. Replace the printer
base unit.
Is it broken?
No
Yes
Check conductivity of the
carriage ribbon cable.
Replace the print unit.
2. Replace the print unit.
•
The purge unit is defective.
Do a Demonstration pattern print.
Hold down the
POWER
button until the beeper sounds once and
manual feed a sheet of paper. Press the
RESUME
button to print
out the Demonstration pattern.
•
The purge drive unit is defective.
•
The carriage unit or carriage ribbon cable is defective.
Check the conditions for
using the printer and
printing paper
specifications.
Do they
meet the
specifications?
Does the
print defect
persist after
BJ cartridge
replacement?
1. Replace the ink
cartridge.
2. Replace the BJ
cartridge.
29
1
1
2
5
6
4
7
8
9
10
14 13 12
11
3
15
16 17 18 19
27
23 22 21 20
24 25 26
28 29
Troubleshooting consists of error
diagnosis, which is required if the
is unknown, and error recovery, wh
if the cause of an error is known.
an error is unknown, perform the
diagnosis, and if it is known, perfo
recovery.
White Line Sample
Summary of Contents for BJC-55 Series
Page 1: ...BJC 55 SERVICE MANUAL Canon...
Page 34: ......
Page 50: ......
Page 73: ...Code page 860 Code page 863 2 23 BJC 50 Part 2 Product Specifications...
Page 74: ...Code page 865 Code page 857 Part 2 Product Specifications BJC 50 2 24...
Page 75: ...Code page 855 Code page 852 2 25 BJC 50 Part 2 Product Specifications...
Page 76: ...Code page 864 Code page 869 Part 2 Product Specifications BJC 50 2 26...
Page 78: ......
Page 106: ...Part 3 Operating Instructions BJC 50 3 28 This page intentionally left blank...
Page 108: ......
Page 160: ......
Page 164: ...4 ADJUSTMENT No parts need to be adjusted Part 5 Maintenance BJC 50 5 4...
Page 199: ...7 1 2 Control board Lower section 5 39 BJC 50 Part 5 Maintenance...
Page 200: ...Part 5 Maintenance BJC 50 5 40 This page intentionally left blank...
Page 206: ...PRINTED IN JAPAN IMPRIME AU JAPON CANON INC The printing paper contains 70 waste paper...