32
Abnormal printing
Dot is missing in horizontal direction.
Possible cause:
A pin in the printhead is defective. Main PCB is defective.
Remedy:
Replace the print head if a print pin is bent or broken and if 14
Ω
of resistance
between GND and each pin is not measured on the print head terminal.
Replace the defective components on the Main PCB, such as the driving
transistor or fuse for missing pin.
Vertical dot spacing is improper.
Possible cause:
Print head is defective.
Paper holding pressure by tractor R/L is insufficient.
Remedy:
Replace the print head or the tractor spring.
Dot alignment in horizontal direction is improper.
Possible cause:
C motor is defective.
Remedy:
Replace the C motor.
Содержание Accel-7350
Страница 1: ...1 Accel 7350 Dot Matrix Printer Service Manual Document 130034 ...
Страница 24: ...23 Wiring Diagram ...
Страница 25: ...24 Control Diagram ...
Страница 35: ...34 Dots Missing Caution Do not touch the print head immediately after printing because it may be too hot ...
Страница 36: ...35 Extra Dot Printing Improper character ...
Страница 37: ...36 Incorrect Printing Irregular print data ...
Страница 38: ...37 No LCD Display Half of the LCD lights up ...
Страница 39: ...38 No LCD Display Completely blank ...
Страница 40: ...39 Control Keys Not Functioning ...
Страница 41: ...40 No Buzzer Abnormal Ribbon Feeding Causing abnormal carriage movement ...
Страница 42: ...41 No Line Feed or Inconsistent Line Feeding ...
Страница 43: ...42 Carriage Error ...
Страница 44: ...43 ...
Страница 46: ...45 Cover Open Error Will Not Cancel With Cover Closed ...
Страница 47: ...46 No Fanfold Paper Reverse Line Feed ...
Страница 48: ...47 Printing Does Not Stop After Paper Is Ejected ...
Страница 49: ...48 Not Powering Up ...
Страница 94: ...93 Indicator Circuit ...
Страница 95: ...94 I F Circuit ...
Страница 96: ...95 Slide SW Circuit ...
Страница 97: ...96 Power Circuit ...
Страница 98: ...97 Exploded View 1 6 Following pages require Legal size paper for printing ...
Страница 99: ...98 Exploded View 2 6 ...
Страница 100: ...99 Exploded View 3 6 ...
Страница 101: ...100 Exploded View 4 6 ...
Страница 102: ...101 Exploded View 5 6 ...
Страница 103: ...102 Exploded View 6 6 ...
Страница 119: ...126 ...