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TROUBLESHOOTING CPU BOARD
&
DRIVE PWB
Push FEED SW
and turn power
on again
.
*TOF:
Top of Form
+
5V
+15V
+26V (21.5 to 26.5V)
Check power circuit.
Check printer
mechanism
FEED, TOF SW circuit
Check FEED drive circuit
Check CR step motor drive
circuit & printing head drive circuit
Check printing head drive
circuit
&
FEED circuit
-7-
Check printer interface
circuit
&
1/0 card
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