Canon PC920 Support Question
Canon PC920 Support Question
Find answers below for this question about Canon PC920.Need a Canon PC920 manual? We have 1 online manual for this item!
Question posted by iampbdb on March 20th, 2013
How To Adjust Exposure At The Board Level?
Which pot adjusts the exposure on a Canon PC920
Current Answers
Related Canon PC920 Manual Pages
Service Manual - Page 1
...-8241
PC960 F13-8434
PC980 F13-8232
PC981 F13-8233
TVD00001-
TVH00001- FY8-13GA-000
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) REVISION 0
PC860 F13-8491
PC880 F13-8291
PC890 F13-8242
PC920 F13-8431 F13-8441
F13-8461
PC921 F13-8432
TYA00001-
AUG. 1999
COPYRIGHT ©...
Service Manual - Page 3
...-related mechanisms are operated, and shows how they may be disassembled/assembled and adjusted.
It also shows how the unit may be disassembled/assembled and adjusted. Chapter 10 Maintenance and Servicing provides tables of operation used for the machine's exposure system. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
i
Chapter...
Service Manual - Page 7
Copier 1-2 B. Functional Construction ........2-1 B. USING THE MACHINE 1-15 A. EXPOSURE SYSTEM 3-9
A. DISASSEMBLY/ASSEMBLY ..... 3-12 A. ADF 1-8 III....the DC Controller 2-7
CHAPTER 3 EXPOSURE SYSTEM
I . Scanner Drive System ..........3-4
II. Basic Sequence of Electrical Circuitry 2-2 C. Exposure System 3-37
COPYRIGHT © 1999 CANON INC. Cross Section 1-13
...
Service Manual - Page 10
...PCBs 11-82 E. Variable Resistors (VR) and Check Pins by PCB .......... 11-84
VII. DC CONTROLLER CIRCUIT
DIAGRAM A-7 E. BLANK EXPOSURE (rear) CIRCUIT DIAGRAM A-34
N. SOLVENTS/OILS A-36
viii
COPYRIGHT © 1999 CANON INC. STANDARDS AND ADJUSTMENTS 11-5 A. ADF CONTROLLER CIRCUIT
DIAGRAM A-15 F. HIGH VOLTAGE CONTACT CIRCUIT DIAGRAM A-32
L. MAINTENANCE AND INSPECTION 11...
Service Manual - Page 14
CHAPTER 1 GENERAL DESCRIPTION
II. Copier
1. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Mechanisms Item
Reproduction Charging Exposure Copy density adjustment Development Pickup
Separation Fixing Cleaning Original orientation
Desk top
Descriptions
Fixed
Halogen lamp (80 V/110 W for 120V-model; 150 V/160 W for 220/240 V-model)
Fixed ...
Service Manual - Page 49
... are operated, and shows how they may be disassembled/assmbled and adjusted.
Controlling the Scanning Lamp 3-9
III. Exposure System 3-37
COPYRIGHT © 1999 CANON INC. Outline 3-1 B. Lens Drive Assembly ......... 3-31 C. OPERATIONS 3-1 A. Scanner Drive System ..........3-4
II. EXPOSURE SYSTEM 3-9
A.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON...
Service Manual - Page 59
...
Activation detection circuit
Composite power supply PCB
Figure 3-201
COPYRIGHT © 1999 CANON INC. tions: • Turning on/off the scanning lamp. • ... lamp.
(Q101)
Intensity adjustment (Q900) signal
Serial communication
PWM_1KHz
Lamp activation signal
LAMP_ON
9
+
4- CHAPTER 3 EXPOSURE SYSTEM
II. Controlling the Scanning Lamp
1. Phase 2
+ - CANON PC800s/900s REV.0 AUG....
Service Manual - Page 60
... CANON INC. The scanning lamp turns on .
Operations a. When LAMP_ON is '0',
The phase control circuit turns on /off . CANON PC800s...adjustment signal (PWM_1KHz) and the lamp activation signal (LAMP_ON) to control the scanning lamp. Turning On/Off the Scanning Lamp
The DC controller PCB and the composite power supply exchange signals in serial communication to turn on . CHAPTER 3 EXPOSURE...
Service Manual - Page 61
...EXPOSURE SYSTEM
b. The microprocessor (Q900) on .
Related Error Code
E220 • The lamp activation detection signal is not sent.
In turn, the phase control circuit (HIC 001) controls the voltage supplied to the scanning lamp active voltage signal. t [msec]
ON OFF
1 [msec] 1kHz
1 Pulse duty= t/ 1k × 100 [%]
Figure 3-202
c.
CANON...; 1999 CANON INC.
...for AE exposure so ...
Service Manual - Page 89
...middle of the manufacturer) is as shown.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
3-39
CHAPTER 3 EXPOSURE SYSTEM
Logo mark
(front) Scanning lamp
(...CANON INC. 2. Further, be sure that the logo mark (or the name of the lamp is toward the front. Points to Note When Mounting the Lamp When mounting the scanning lamp, be sure to perform intensity adjustment...
Service Manual - Page 93
...in image formation are formed. Blank Exposure 4-26
COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED... IN JAPAN (IMPRIME AU JAPON) Controlling the Developing/ Separation Static Eliminator Bias 4-11
F. Measuring the Density of how images are operated, and shows how they may be disassembled/assembled and adjusted...
Service Manual - Page 105
...bias (turning on and off the static eliminator bias) • Controlling the voltage level of the developing DC bias
Both AC bias and DC bias are applied to the ...developing cylinder regardless of the position of the density adjusting lever, thereby preventing adhesion of excess toner on the photosensitive drum. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU ...
Service Manual - Page 108
... of changes in the output of the AE sensor during manual density adjustment.
4-14
COPYRIGHT © 1999 CANON INC.
The density correction switch (SW101) affects both manual density adjustment and auto density adjustment (AE).
Developing DC bias Voltage supplied to any of three levels, enabling correction of the photosensitive drum. SW101
Figure 4-108
If the...
Service Manual - Page 195
...IMPRIME AU JAPON)
7-15 Control Panel
1. then, detach the control panel [7].
[2] [1]
Figure 7-314
[6]
[4]
Move to the right
Lighter
Darker
Auto Exposure Manual Exposure
Photo Timer Saver
[3] [7]
[5]
Figure 7-315
COPYRIGHT © 1999 CANON INC. Disconnect the cable from the DC controller.
3) Free the claw [3], and remove the power supply switch assembly [4]. CHAPTER 7 EXTERNALS/AUXILIARY...
Service Manual - Page 204
... of the capacitor whenever you have removed the composite power supply PCB.
2) When handling the PCB, hold charges when the machine's power supply is off. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) Points to short the terminals of the...
Service Manual - Page 207
ADF
A. ADF
Original tray
Copier
Figure 8-101
COPYRIGHT © 1999 CANON INC.
CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
8-1 Outline
The ADF picks up the originals stacked on the original tray starting with the topmost original, moves them through the copyboard, and delivers them. CHAPTER 8 ADF
I. See Figure 8-101 for an outline of the feeding route.
Service Manual - Page 270
Copier a. VR105
J131 J101 J102 J101
J130
J114
J102 VR104VR105VR106
VR107
VR103VR102 J107
J103
J104
J105
J109
J106
Figure 11-202
Turing VR105 and Leading Edge Non-Image Width
Direction of VR105 Clockwise
Counterclockwise
Leading edge non-image width Decreases Increases
Table 11-201
COPYRIGHT © 1999 CANON INC. STANDARDS AND ADJUSTMENTS
A.
Caution: If...
Service Manual - Page 313
... detergent solution or
alcohol; b. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) The site must not be kept level.
2. Checking the Originals Check the...dirt is soiled, clean it .
4. Checking the Transfer Charging Roller a. The copy density adjusting lever is caused by Canon? Originals with "light" images.
3. Originals prepared in question is often best if set...
Service Manual - Page 358
... ROTATION
SCFW
SCANNER FORWARD
SCRV
SCANNER REVERSE
STBY
STANDBY
COPYRIGHT © 1999 CANON INC. Signals
ACBIAS [AE] AEREF BIAS_PWM BIAS_S CLK32K CPUSD DPD DV_AC_ON DV_DC_ON...signal SCANNING LAMP INTENSITY ADJUSTMENT signal POWER SWITCH OFF signal REGISTRATION CLUTCH SOLENOID DRIVE signal RELAY DRIVE signal PRE-REGISTRATION ROLLER PAPER DETECTION signal SIDE BLANK EXPOSURE LAMP ON signal ...
Service Manual - Page 360
... 2
J15
J2
FU2 Thermal fuse 2
J434
11 22
C. Copier
J901
1 2 3 4
Main motor M1
M
BP701
BP705
...BP703
BP707
DV
BP702
J14
BP706
BP704
HVT BOARD 1
HVT BOARD 2
J15 SP
TR
J62
91 82 73...CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
J751 3 2 1
Q751 Pre-registration roller
paper sensor
SENSOR PCB
M
12
12
J601
J602
M2 Scanner/lens drive motor
SIDE BLANK EXPOSURE...
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