—
— 69
Troubleshooting Flowchart
If the source of a problem is not clear, use the flowchart below to find and replace the defective
component. Normally, perform servicing by component replacement. Repairs of the PCBs and
other components should be performed only by technicians.
Execute the self-test
Start
Power on
Is POWER
Is PAPER
Is paper roll in
Is self-test
normal?
END
Replace or insert paper roll.
1
3
No
Yes
Yes
No
Yes
No
Yes
No
No
Yes
LED lit?
OUT LED lit?
near-end condition
or not inserted?
2
4
5
loading executed?
Semi-automatic
No
Yes
Is ERROR
LED flashing?
Take steps described in
“Error types and
countermeasures.”
END
Does auto-cutter
perform normally?
Host sends print data
Is printout
Yes
No
normal?
6
No
Yes
Summary of Contents for UP-250
Page 1: ...EXTERNAL PRINTER FEB 2000 MODEL UP 250 without price TECHNICAL MANUAL ...
Page 95: ... 86 END END Yes No Action 4 Replace main PCB Replace printer OK Action 4 mechanism assembly ...
Page 136: ... 127 ...
Page 149: ... 140 Main Circuit Board Parts Layout ...
Page 150: ... 141 RS 232 Serial Interface Circuit Board Parts Layout ...
Page 151: ... 142 IEEE 1284 Parallel Interface Circuit Board Parts Layout ...
Page 152: ...RS 485 Serial Interface Circuit Board Parts Layout 143 ...
Page 160: ... 151 Case Unit Lubrication Points Diagram 4 G 31 4 G 31 3 G 31 3 G 31 ...
Page 163: ... 154 EXPLODED DIAGRAM FOR TM U200B U210B NO 1 ...
Page 164: ... 155 EXPLODED DIAGRAM FOR TM U200B U200PB U210B U210PB NO 2 ...