Canon iR4570 Series Service Manual page 148

Chapter 2
12) After making sure that LED5 [3] (red) has gone on, set the bits of the DIP switch [1] (SW2) on the PCB as
indicated in the table; then, press the push switch [2] (SW4).
A press on the push switch [2] (SW4) will cause LED5 [3] (red) to go off, indicating that the RAM has been
initialized.
2-38
[3]
LED1 LED2 LED3
SW2
LED5
LED6
LED4
IC6
SW1
bits of SW2
SW2-1
SW2-2
SW2-3
SW2-4
SW2-5
SW2-6
SW2-7
SW-8
[1]
2 6
BAT1
1 1
1
SW3
SW4
2
[2]
CN4
CN3 CN2
F-2-86
T-2-8
Setting
OFF
OFF
OFF
ON
OFF
ON
See step 9).
OFF