3-17
CHAPTER 3 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS
I.
Variable Resistors (VR), Light-Emitting Diodes (LED), and
Check Pins by PCB
Of the variable resistors (VR), light-emitting diodes (LED), and check pins used in the copier,
those that may be used in the field are discussed.
Caution:
1. Some LEDs emit light even when off because of leakage current. It is a normal condition,
and must be kept in mind.
2. VRs that may be used in the field:
VRs that must not be used it the field:
3. The VRs and check pins that are not found in the tables are for the factory only, and require
special tools and high accuracy. Do NOT touch them in the field.
1. DC Driver PCB
VR2
VR1
J1040
J1030
J1029
J1022
J1023
J1024
LED1
1
1
5
1
12
1
7
2
8
2
J1001
J1053
J1052
5
1
5
1
3
1
J1051
7
1
ON
2
1
J1050
SW1
J1026
A1
A15
B15
B1
J1027
J1028
J1025
A1
A10
B10
B1
A1
A8
A1
A10
A1
A12
B10
B1
A1
A10
B12
B1
B1
B8
J1002
A10
A1
B1
B10
J1005
A10
A1
B1
B1
B2
A1
A2
B49
B50 A49
A50
B10
J1004
J1006
B1
B13
A1
A12
A13
A1
B1
A1
A18
B18
B1
J1015
J1016
J1017
A1
A16
B16
B1
J1018
A1
A12
B1
B9
B1
B12
J1019
A1
A9
B13
J1020
A1
A13
B1
J1021
A1
A10
B10
B1
B1
B10
J1007
A1
A18
B1
B18
J1008
A1
A8
B8
B1
J1011
A1
A12
J1012
A1
A13
J1013
A1
A17
J1014
A1
A11
B12
B1
B13
B1
B17
B1
B11
B1
J1009
J1010
4
1
9
1
1
13
2
14
B12
(OLD TYPE)
1
ON
2
SW1
(NEW TYPE)
Figure 3-14
LED: turns on when +24 V is supplied, and turns off when the front cover is opened.
SW1-1
OFF
ON
OFF
ON
SW1-2
OFF
OFF
ON
ON
Remarks
Normal area
Highland 1
Highland 2
OUT
Normal
Case 1
Case 2
Not used
Table 3-14