Ricoh B039 - Switches

Trouble-
shooting
ELECTRICAL COMPONENT DEFECTS
SM 4-9 B039/B040/B043
Component CN Condition Symptom
OpenImage Density
326-2
(IOB)
Shorted
The toner density control process is changed
(see the note below the table).
OpenScanner H.P.
304-2
(IOB)
Shorted
SC120 is displayed.
Open
APS and Auto Reduce/Enlarge do not function
correctly.
Platen Cover
304-5
(IOB)
Shorted
If the Start button is pressed with the platen
cover or A(R)DF closed, “Cannot detect original
size” is displayed.
OpenOriginal Width
305-3,4
(IOB)
Shorted
The CPU cannot detect the original size
properly. APS and Auto Reduce/Enlarge do not
function correctly.
OpenOriginal Length
305-8,9
(IOB)
Shorted
The CPU cannot detect the original size
properly. APS and Auto Reduce/Enlarge do not
function correctly.
Open
The Paper Jam message will appear whenever
a duplex copy is made (paper hasn't reached
the sensor).
Duplex Entrance
222-2
(DCB)
Shorted
The Paper Jam message appears even if there
is no paper at the sensor.
Open
The Paper Jam message will appear whenever
a duplex copy is made (paper hasn't reached
the sensor).
Duplex Exit
222-5
(DCB)
Shorted
The Paper Jam message appears even if there
is no paper at the sensor.
Open
The Paper Jam message will appear whenever
a duplex copy is made (paper hasn't reached
the sensor).
Duplex Inverter
220-6
(DCB)
Shorted
The Paper Jam message appears even if there
is no paper at the sensor.
NOTE: SC392 is activated when the CPU detects an ID sensor error during
developer initialization (SP2-214). However, SC392 is not displayed on the
LCD but simply logged in the SC log (SMC printout), unless the technician
exits SP Mode as soon as the "Error!!!" message is displayed.
4.2.2 SWITCHES
Component CN Condition Symptom
Open
Upper Paper
Size
315
1,2,4
(IOB)
Shorted
The CPU cannot detect the proper paper size,
and misfeeds may occur when a copy is made
from the 1st paper tray.
Open
The Cover Open indicator is lit even if the
vertical transport door is closed.
Vertical
Transport Door
316-5
(IOB)
Shorted
The Cover Open indicator is not lit even if the
vertical transport door is opened.
OpenLower Paper
Size
317-
1,2,4
(IOB)
Shorted
The CPU cannot detect the proper paper size,
and misfeeds may occur when a copy is made
from the 2nd paper tray.