Service manual

COPYRIGHT © 1999 CANON INC. CANON GP160 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 9
EXTERNAL / AUXILIARY MECHANISM
In this chapter, the operation, function and purpose of this unit’s auxiliary control sys-
tem as well as the relation between the electrical system and mechanical system is
explained. Furthermore, an overview of each part’s operation timing is explained.
I. CONTROL PANEL...................................9-1
A. Overview ............................................9-1
II. POWER SUPPLY ....................................9-2
A. Low-voltage power supply circuit .......9-2
B. High voltage power supply circuit ......9-4
C. Energy save function control..............9-5
III. FAN..........................................................9-7
A. Rotation control mechanism ..............9-7
IV. BACK-UP BATTERY................................9-8
A. Back-up function ................................9-8
B. Back-up Data ...................................9-12
V. DISASSEMBLY, ASSEMBLY ................9-16
A. Control panel....................................9-17
B. Main Motor .......................................9-19
C. DC controller PCB............................9-25
D. Image processor PCB......................9-26
E. DC power supply PCB .....................9-27
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