Electrical Component Defects - Ricoh FAX4700L Service Manual

TROUBLESHOOTING

ELECTRICAL COMPONENT DEFECTS

6.5. ELECTRICAL COMPONENT DEFECTS
6.5.1. Defective Sensor Table *
Document sensor
Scan line sensor
B4-width sensor *
A3-width sensor *
Interlock switches
Registration sensor
Fusing exit sensor
Bypass feed sensor
Toner end sensor
Paper size sensor - Standard cassette
Paper end sensor - Standard cassette
Paper size sensor - 100 sheet cassette
Paper end sensor - 100 sheet cassette
Paper size sensor - Paper feed unit
Paper end sensor - Paper feed unit
Relay sensor - Paper feed unit
Sensor Symptoms if Defective
"CLEAR ORIGINAL" or "DIAL FAX NO" is
displayed at power-up.
"SET DOCUMENT" is still displayed after a
document is placed in the feeder.
"CLEAR ORIGINAL" is displayed at power-
up.
"CLEAR ORIGINAL" is displayed soon after
the start of copying.
The machine cannot scan B4 width.
The machine cannot scan A3 width.
There is no alarm on opening the cover,
and "CLOSE COVER" is not displayed.
"CLOSE COVER" is displayed at power-up.
"CLEAR COPY" is displayed at power-up.
"CLEAR COPY" is displayed soon after the
start of copying.
Bypass feed cannot be used.
Toner end is not indicated.
"ADD PAPER" is displayed at power-up.
Page separation may be done even if the
original is the same size as the copy paper.
The Add Paper indicator lights even if paper
is remaining.
The Add Paper indicator does not light
when the paper has run out.
"ADD PAPER" is displayed at power-up.
Page separation may be done even if the
original is the same size as the copy paper.
The Add Paper indicator on the lower
cassette's operation panel lights even if
paper is remaining.
The Add Paper indicator on the lower
cassette's operation panel does not light
when the paper has run out.
"ADD PAPER" is displayed at power-up.
Page separation may be done even if the
original is the same size as the copy paper.
The Add Paper indicator lights even if paper
is remaining.
The Add Paper indicator does not light
when the paper has run out.
"CLEAR COPY" is displayed at power-up.
"CLEAR COPY" is displayed soon after the
start of copying.
6-38
December 21st, 1995