Canon PD-82, Service Manual

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2. Service LED Indications
The Service LED flashes by repeating light-ON for 0.5 seconds and light-OFF for 0.3 seconds
while the paper deck is operating normally.
If a failure occurs, the Service LED flashes the cycle shown below. This cycle is constituted
by
➀
Header (light-ON for 1.0 second and light-OFF for 0.2 seconds),
➁
Detection contents (light-
ON for 0.3 seconds and light-OFF for 0.2 seconds), and
➂
Pause (light-OFF for 2.0 seconds).
Figure 4-1-4
The factor of the error can be determined according to the flashing condition of the Service
LED listed in Table 4-1-1.
Example: If the Service LED flashes 3 times in the Header period and then once in the detec-
tion contents period, the factor of the error is "lifter failure."
Table 4-1-1
3. Operation Check
When sensors, switches, motors, solenoid or clutch are suspected to be defective, or when they
are replaced, you can check whether they are operating normally or not using the test switch-
es. By changing the combination of the test switches (refer to Figure 4-1-5), the sensor check
mode, motor test mode and paper pick-up test mode can be executed.
4 - 6
CHAPTER 4
LED ON
OFF
Header
Detection
contents
Pause
1 cycle
Header
➀ ➁ ➂ ➀
Header Sense contents The factor of the error
1
3
4
1
1
1
1
1
2
2
2
2
3
3
Lifter failure
Registration paper sensor delay jam
Paper jam sensor delay jam
Paper jam sensor stationary jam or initial jam
Feed unit open
Tray open, or paper size not detectable
No paper
2
2 Registration paper sensor initial jam