Canon GP200 Service Manual page 53
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OPERATIONS AND TIMING
I.
BASIC OPERATION ................................3-1
A. Functional Construction....................3-1
Outline of the Electrical Circuitry......3-2
C. Inputs to the Major PCBs .................3-6
Main Motor Control PCB ................3-16
II.
ORIGINAL EXPOSURE SYSTEM.........3-20
A. Outline ............................................3-20
Varying the Reproduction Ratio .....3-22
(original exposure system) .............3-22
Scanner Motor................................3-23
E. Controlling the Scanning Lamp ......3-24
Identifying the Size of Originals......3-26
III.
IMAGE PROCESSING ..........................3-29
A. Outline ............................................3-29
Analog Image Processing ..............3-31
C. Digital Image Processing................3-33
IV.
LASER EXPOSURE SYSTEM ..............3-51
A. Laser Processing Assembly ...........3-51
Generating the BD Signal ..............3-53
C. Laser Driver Circuit.........................3-54
V.
IMAGE FORMATION SYSTEM .............3-58
A. High-Voltage Transformer Circuit ......3-58
Primary Charging Roller Bias.........3-60
Transfer Charging Roller Bias ........3-63
Controlling the Developing Bias .....3-66
Drum Cleaner .................................3-70
Cleaning Mechanism ......................3-73
I.
Detecing Errors on the
Composite Power Supply PCB.......3-74
VI. PICK-UP/FEEDING SYSTEM ...............3-76
A. Outline ............................................3-76
Pick-Up from the Cassette .............3-79
COPYRIGHT © 1996 CANON INC.
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CHAPTER 3
VII. FANS ...................................................3-139
VIII. POWER SUPPLY ................................3-141
IX. SYSTEM ..............................................3-148
X.
XI. SELF DIAGNOSIS...............................3-261
CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
Multifeeder ....................................3-100
G. Controlling the
Registration Roller Clutch.............3-103
H. Making Overlay Copies ................3-104
I.
Making Two-Sided Copies............3-106
Lower Feeding Assembly .............3-108
K. Fixing/Delivery Assembly .............3-118
Delivery Assembly ........................3-127
M. Detecting Jams.............................3-130
A. Functions and Operaitons ............3-139
A. Outline ..........................................3-141
SLEEP Mode................................3-145
A. Basic Operation ............................3-148
Diagram of the Function Boards ..3-150
C. Flow of Image Signals ..................3-154
SERVICE MODE .................................3-158
A. Outline ..........................................3-158
Using Service Mode .....................3-159
D.
*1* DISPALY
(control display mode) ..................3-161
(I/O display mode) ........................3-178
*3* ADJUST (adjustment mode) ..3-197
G. *4* FUNCTION (function mode) ...3-208
H. *5* OPTIN (settings mode)...........3-228
I.
*6* COUNTER (counter mode) ....3-234
*7* ACC (accessory mode) ..........3-238
K. Electrical System..........................3-242
A. Copier ...........................................3-261
Self Diagnosis of the RDF-G1......3-266
C. Self Diagnosis of the ADF-F1.......3-266
Self Diagnosis of the Pedestal .....3-267
Multi Output Tray -C1 ...................3-267
Multi Output Tray-12 .....................3-268
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