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problem.
Perform the self
printing test.
altermate?
YES
NO
NO
signal_at IC6
Are QA400-QA405
normal?
'
alternate?
YES
YES
Does the
signal at |C6 @
63
Replace IC6.
alternate?
Replace the defective
YES
QA.
Are QA400-QA405
normal?
normal?
YES
YES
vials ROM and
Are QA406-QA408
ae
i
oe.
Replace IC1.
printer operation
normal?
YES
Check again.
NO
Replace defective QA.
NO
Replace the
defective QA.
YES
Is the
resistance of Head
Coil 200?
NO
Replace Printhead.
YES
Check mechanism.
(Ageing Test Mode)
R-26
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