Canon CP660 Service Manual page 286

CHAPTER 10 TROUBLESHOOTING
Note:
1. The notation "zz" shown on the display (2nd row) is for use at the factory for checks
and is not relevant to servicing work.
2. Each sensor has its own response time, some requiring as much as about 5 sec.
Be sure to allow an adequate period of time before making a decision on each sen-
sor.
3. If multiple sensors are turned on at the same time, the result will be the sum of the
codes obtained for all sensors (in hexadecimal notation).
4. To execute sensor monitor mode, be sure to remove the intermediate transfer drum,
all cartridges, and secondary transfer belt assembly before starting service mode.
(Otherwise, you could inadvertently touch operating parts.)
Further, you need to remove the following parts for respective sensors in view of the
type of work to perform:
• For PS1903 and PS5, the fixing assembly.
• For PS11, the upper cover assembly.
• For PS1207, the cassette 1.
• For PS1208, the cassette 2.
• With the Reader Unit Installed
1) Start service mode.
2) Select COPIER>I/O>DC-CON or R-CON in sequence to bring up the screen shown
in Figure 10-102.
3) Make checks as shown. (See pp. 10-5 ff.)
10-4
COPYRIGHT © 1999 CANON INC.
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Display I/O Adjust
<DC-CON>
7ÅEÅEÅEÅEÅEÅE 0
P001 xxxxxxxx
P002 xxxxxxxx
P003 xxxxxxxx
P004 xxxxxxxx
P005 xxxxxxxx
P006 xxxxxxxx
P007 xxxxxxxx
P008 xxxxxxxx
P008
Address
Figure 10-102
Function Option Test
< 1/10 > < READY >
xxxxxxxx
bit 0
bit 1
:
bit 7
CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
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