Canon bjc-7100 서비스 매뉴얼

Adjust the registration along the horizontal and vertical directions using the printer
driver.  This adjustment is the same as the operation when the user installs the
printer or replaces the BJ cartridge.  For details, see 

"Part 3: 1.3.3 3) Aligning the print

heads" (page 3-5)

.

Check that the head gap is correct when you have loosened the following screws, for
example during replacement of parts, or when the printer has been strongly impacted
for example by its being dropped.
This check is also necessary if the paper scrapes against the head during printing or
when color drifts frequently.
The head gap must be adjusted if it has deviated out of the allowable range of 1.2 to
1.6 mm.

The following tools are required for checking and adjusting the head gap.

You can substitute the above thickness gages, if not available, with commercially
available ones capable of measuring 1.2 mm, 1.4 mm and 1.6 mm gaps.

Follow the procedure below to check the head gap.
1) Remove the AC adapter, top case and sheet feeder unit from the printer, and

make sure that the cartridge is locked.  Attach both service BJ cartridges.
Also, disconnect the CR motor connector from the logic board.  If the carriage is
moved manually with the CR motor still connected to the logic board, the
electromotive force of the motor may damage the logic board.

Part 5: Maintenance

BJC-7100

Thickness gauge 1.2 mm (QY9-0016-000)
Thickness gauge kit (QY9-0030-000)
Adjustment knob (QY9-0031-000)
BJ cartridges (tester)

Used for checking the head gap
Used for checking and adjusting the head gap
Used for adjusting the head gap
Prepare this as a special tool

Paper

Head Gap

1.2mm to 1.6mm

BJ Head