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CHAPTER 13 TROUBLESHOOTING
13-146
COPYRIGHT
©
1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
K. Variable Registers (VR), Light-Emitting Diodes, and Check
Pins by PCB
Of the variable resistors (VR), light-emitting diodes, and switches found inside the machine,
those needed in the field are discussed.
Caution:
1. Some LEDs emit dim light even when 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
:
Caution:
The VRs and check pins not found in the tables are for factory use only. They require special
tools and high accuracy and, therefore, must not be touched in the fieled when making adjust-
ments and checks.