Service manual

CHAPTER 7 MAINTENANCE MODE
7-14
3.9 Sensor Operational Check (Maintenance mode 32)
< Function >
This function allows you to check whether the 13 sensors--document front sensor,
document rear sensor, cover sensor, registration sensor, toner sensor, paper ejection
sensor, CCD HP sensor, manual insertion sensor, cassette sensor, jam sensor, document
tray open sensor, 2nd registration sensor*, and 2nd cassette sensor*--operate correctly.
(* These sensors are provided for models supporting a 2nd paper cassette.)
< Operating Procedure >
(1) Press the 3 and 2 keys in this order in the initial stage of the maintenance mode. The
machine beeps 1100 Hz and 400 Hz tones cyclically through the following volumes for
testing the speaker. To stop beeping, press the Menu button.
OFF
400 Hz
Low Medium High
1100 Hz
High Medium Low
OFF
Fig.7-9
If the sensing status are as listed below, the LCD will show the following:
"DFDRFCFHCVMP" and "TNMNRSCSP1P2C2R2 FAFUPOLVDX" (which can be
switched by pressing the Start button for machines.)
Given below is the relationship between the LCD indication, sensor names and sensor
status.
LCD Sensors Sensing status
DF
Document front sensor No document detected.
DR
Document rear sensor No document detected.
FC
Document tray open sensor Document cover close.
FH
CCD HP sensor CCD unit placed in home position.
CV
Cover sensor Front cover closed.
MP Multi-purpose tray sensor No recording paper detected.
TN
Toner sensor
Toner detected.
MN
Manual insertion sensor No paper detected.
RS
Registration sensor No paper detected.
CS
Cassette sensor No paper tray loaded.
P1 Tray 1 recording paper sensor Recording paper detected.
P2 Tray 2 recording paper sensor Recording paper detected.
C2
2nd cassette sensor* No paper tray loaded.
R2
2nd registration sensor* No paper detected.
FA Face-up tray sensor Cover closed.
FU Fixing sensor No recording paper detected.
PO
Paper ejection sensor No paper jam.
LV Size lever Letter
DX Duplex tray Tray detected.
(* These error indications will always be displayed in models not equipped with a 2nd paper
cassette.)