COPYRIGHT © 2001 CANON INC.
2000 2000 2000 2000
CANON SmartBase PC1200s/iR1200s REV. 0 DEC. 2001
CHAPTER 7 TROUBLESHOOTING
7-106
6.3 Variable Resistors, Light Emitting Diodes (LED), and
Check Pins by PCB
Of the VRs, LEDs, and check pins used in the machine, those needed when servicing in
the field are discussed:
1. Some LEDs emit dim light even when 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:
Do not touch the VRs and check pins not found in the lists herein; they are
exclusively for the factory, and require special tools and high accuracy.
6.3.1 Image Processor PCB
J309J310
J311
*1
J312
J314
J316
J317
J318
VR901
J319
*2
J301
J302
J303
J307
JP1
BAT1
BAT2
J1
J308
J305 J315
J304
J321
*2
J320
*2
F07-603-01
JP1:
jumper plug for power used by battery to back up memory (control data; user data, service
mode data).
BAT1: battery used to back up memory (SRAM; control data; service mode data, user mode data).
BAT2: battery used to back up memory (SDRAM; fax images)
*1: If equipped with ADF functions
*2: If equipped with fax functions.
