B245/B276/B277/B268/B269 Service Manual 18-Jan-06
136
Component CN Condition Symptom
By-pass Paper Size
136-
1,2,4,5
(BICU)
Open
The CPU misdetects or is not able to
detect the size of the paper set in the
bypass tray, causing possible misfeeds
when feeding from this tray.
Open
The Cover Open indicator is lit even if the
right door is closed.
Right Door
124-5
(BICU)
Shorted
The Cover Open indicator is not lit even if
the right door is open.
Open
The Cover Open indicator is lit even if
doors are closed.
Front/Right Cover
130-1
(BICU)
Shorted
The Cover Open indicator is not lit even if
doors are open.
Open The machine does not turn on.
Main
281-3,4
(PSU)
Shorted The machine does not turn off.