Canon CP660 Service Manual page 368

CHAPTER 10 TROUBLESHOOTING
2. SENSOR MONITOR
Sensor monitor mode is for displaying the state of the sensors in the paper path of
the printer unit.
Sub Menu
SENSOR Use it to monitor the state of the sensors used
MONITORING in the printer unit. Turn on the sensor manually;
the results of execution will be indicated on the
control panel.
For 'xx yy zz', see Table 10-603.
Table 10-603 shows the display position and the display reading of each sensor.
Sensor
Face-down tray delivery sensor (PS11)
Fixing delivery sensor (PS1903)
Separation sensor (PS5)
Pick-up assembly sensor (PS17)
Registration paper sensor (PS1)
Lower cassette paper absent sensor
(PS1207)
Upper cassette paper absent sensor
(PS1208)
Multifeeder tray paper sensor (PS1301)
:
Caution
1. The notation "zz" in the display panel (2nd row) is for checks at the factory, and is
not relevant for servicing work.
2. Each sensor has its own response time, some requiring as much as 5 sec. Be sure
to allow adequate time before making a decision.
3. If multiple sensors are turned on at once, the reading will be the sum of the results
in hexadecimal notation.
4. Execution sensor monitor mode can drive some major parts. To avoid contact and,
therefore, injuries, be sure to remove the intermediate transfer drum, various car-
tridges, and secondary transfer belt assembly before starting service mode.
In view of the work, remove the following for each respective sensor:
• For PS1903 and PS5, remove the fixing assembly.
• For PS11, remove the upper cover assembly.
• For PS1207, remove the cassette 1.
• For PS1208, remove the cassette 2.
10-86
COPYRIGHT © 1999 CANON INC.
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Description
Display reading
(hexadecimal)
10
08
04
02
01
08
02
01
Table 10-603
CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Remarks
Display position
xx
yy