Service manual

AR-C200P Rev.5 136 /
6 Poor Fusing (Ink spreads or peels when touched with fingers)
• Is regulated paper being used?
NO Use regulated paper.
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• YES Is the contact of the fuser unit connected properly?
NO Connect the contact of the fuser unit properly.
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• YES Is the roller in the fuser unit dirty?
YES Replace the fuser unit assembly.
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• NO Is the PAPER THICKNESS (menu 1) selected correctly?
Light: 64 g/m
2
Medium Light: 64 to 74 g/m
2
Medium: 75 to 90 g/m
2
Medium Heavy: 91 to 104 g/m
2
Heavy: 105 to 120 g/m
2
Ultra Heavy 121 to 203 g/m
2
Transparency
NO Set [Paper Thickness] properly.
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• YES Is AC voltage output between CN connector pins 1 and 3 in the low-voltage power unit?
NO Replace the low-voltage power unit.
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• YES Is the heat roller thermister resistance within the regulated value? (See Fig. 5-1)
(Approx. 180k-980kΩ in room temperature of 0-43 degrees Celsius.)
NO Replace the fuser unit.
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• YES Is the back-up roller thermister resistance within the regulated value? (See Fig. 5-1)
(Approx. 190k-980kΩ in room temperature of 0-43 degrees Celsius.)
NO Replace the fuser unit.
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• YES Does the fuser temperature match the set temperature?
Check the fuser temperature in the LCD display of the engine maintenance mode.
Heat roller (upper): 145-155 degrees (5FH-6BH)
Back-up (lower) : 125-135 degrees (48H-53H)
NO Replace the fuser unit assembly.
▼
• YES Replace the fuser unit assembly.
Note: 1. Remove EEPROM from the old board and set it on the new board upon replacing the
engine board (K7N PWB).
2. If EEPROM is not replaced, refer to section 3.2.2.