Canon LBP-2000 Manuel de service télécharger pdf (Page 185)

CHAPTER 4

4 - 34

D. Variable Resistors (VR), Light-Emitting Diodes (LED), Check Pins, Jumpers, and Switches

by PCB

Of the VRs, LEDs, check pins, jumpers, and switches used in the Printer, those needed for servic-

ing in the field are discussed.

Do not touch the VRs or check pins into indicated in the tables; they are for use at the factory

only, and require special tools and high accuracy.

Notes: 1 . Some LEDs emit dim light because of leakage current even while they are OFF. This 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 in the field -------

1 . DC controller PCB

J105

J111

J106

J101

J110

J102

J103

J109

J108

J107

J104

VR403

VR402

VR401

PI104

135

234

SW101

VR101

Figure 4-7-4

Table 4-7-1

Description

Test Print switch

Notation

VR101

VR401

VR402

VR403

SW101

For adjusting leading edge adjustment

For adjustment in factory

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Canon LBP-2000 Manuel de service Page 185

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