Section 6: Checks and Adjustment Procedures
Page 6-4
CG4 Series Service Manual
6.3 SENSOR CHECKS (cont’d)
6.3.2 Top Cover Open Sensor Check
1.
Press POWER button to turn on the printer.
2. Lift the Top Cover to generate a Top Cover open error, the ERROR indicator displayed red.
3. If the sensor is faulty, refer to Section 7.7 Top Cover Open Sensor Replacement of this manual for
replacement instructions.
6.4 RIBBON TENSION ADJUSTMENT (FOR CG408TT, CG412TT ONLY)
This adjustment is performed to remove ribbon wrinkles and/or ribbon skewing.
1. Open the Top cover of the printer.
2. Pull the lever on the middle of the ribbon unit downward to pull out the ribbon unit.
3. Using a Phillips screwdriver (equivalent to JIS No.2), loosen the fixation screws of the ribbon adjust
plate
located anterior to the head assembly.
4. Move the ribbon adjust plate up and down to adjust ribbon tension. Tighten the fixation screws.
5. Do not adjust the plate too drastically as this may cause undue tension during ribbon winding.
6. Load the media and print a User Test print to check the printing.
Refer to
Section 4.3 User Test Print Mode or send the test print command (<TP>,2) to execute User test
print.
If necessary, repeat the above procedures to achieve optimum alignment.
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