Checking The Environment Sensor - Canon iR105 Service Manual

2.9 Checking the Environment Sensor

1) Checking the Environment Sensor
Make the following selections in service mode, and check and record the temperature/
humidity indicated on the screen in the control panel: COPIER>DISPLAY>ANALOG.
Data A
'RTMP' °C ........... data A1
'RHUM' % ........... data A2
2) Press the Rest key twice to turn off the power switch.
3) Remove the environment sensor, and fit the environment sensor jig (FY9-3014) in its
place.
4) Turn on the power switch, and leave the machine alone for 5 min.
5) Make the following selections in service mode, and check and record the temperature/
humidity indicated on the screen in the control panel: COPIER>DISPLAY>ANALOG:
Data B
'RTMP' °C ........... data B1
'RHUM' % ........... data B2
6) Compare data A and data B.
• difference between data A 1 and data B1 is 0 ±5
• difference between data A2 and data B2 is 0 ±20
If the difference between data A and data B is outside the range, replace the environment
sensor.
7) Press the Reset key twice, and turn off the power switch.
8) Detach the environment sensor jig, and fit the environment sensor.
9) Put back all covers.
The environment sensor jig (FY9-301) is precisely adjusted at the factory.
Be sure to keep it in an air-tight case with a drying agent.
COPYRIGHT© 2001 CANON INC. 2000 2000 2000 2000 CANON iR105 REV.0 JULY 2001
CHAPTER 6 TROUBLESHOOTING
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