Variable Resistors (Vr), Light-Emitting Diodes (Led), And; Overview; Adf Driver Pcb; Original Placement Led Pcb - Canon DADF-M1 Service Manual

Chapter 4

4.5 Variable Resistors (VR), Light-Emitting Diodes (LED), and

Check Pins by PCB

4.5.1 Overview

Of the LEDs and check pins used in the machine, those needed for servicing the machine in the field are discussed.
Do not touch the check pins not indicated in the list. They are intended for use at the factory, and require special
tools and high accuracy.

4.5.2 ADF Driver PCB

Some LEDs emit dim light even when they area off. The is a normal condition, and must be kept in mind.

4.5.3 Original Placement led PCB

4-32
J12
J14
6 1
3 1
2 1
J6
F-4-52
1
J201
3
F-4-53
LED
8 1 3 1 7
J5 J14 J4
0003-5520
0003-5539
1
0003-5540