Canon imageRUNNER 2270 Service Manual page 127

service station.
Press the push switch [1] (SW4) on the PCB.
A press on the push switch [1] (SW4) will cause LED6 [2] (red) to go on; when the
transmission is done, LED6 [2] (red) will go off. If it has failed, LED6 [2] (red) will start
to flash.
A press on the push switch [1] (SW4) while LED6 [2] is flashing will start transmission
once again.
A press on the push switch [3] (SW1) while LED6 [2] is flashing will cancel the request
for transmission.
18) Check to make sure that the communication between the host machine and the
controller is correct.
Connect the power plug of the host machine, and turn on its power switch to see that LED2
[1] (orange) flashes.
LED1 LED2 LED3
2
1
SW2
LED5
SW4
LED6
LED4
IC6
[2]
SW1
[3]
CN3
F-2-90
[1]
LED1 LED2 LED3
2 6
1 1
SW2
LED5
SW4
LED6
LED4
IC6
SW1
CN3 CN2
F-2-91
6
BAT1
1
1
SW3
[1]
2
CN4
CN2
BAT1
1
SW3
2
CN4
Chapter 2
2-49