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Servicing Personal Computers, 3rd Edition
book

Servicing Personal Computers, 3rd Edition

by Michael Tooley
May 2014
Intermediate to advanced content levelIntermediate to advanced
320 pages
13h 41m
English
Newnes
Content preview from Servicing Personal Computers, 3rd Edition
Printers and monitors 205
Printer stock faults - continued
Symptom
Cause
Action
Defective driver or buffer If one or more of the base waveforms
is incorrect, check the driver using
an oscilloscope and work
backwards to the slave CPU
Defective paper release Check friction feed and sprocket drive
mechanism or sprocket drive assembly. Adjust or replace
Defective line feed motor or driver Check waveforms at the collector and
Paper feed abnormal or not
feeding at all
transistor
Defective driver or buffer
Printer executes 'self-test' but will Interface faulty
not accept printing istructions
from the host computer
Abnormal indication on switch
panel ...
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Publisher Resources

ISBN: 9781483193670