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Service Manual - Page 2
CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) COPYRIGHT © 2000 CANON INC. COPYRIGHT © 2000 CANON INC.
Printed in Japan Imprimè au Japon
Use of this manual should be strictly supervised to avoid disclosure of confidential information.
Service Manual - Page 4
... and Servicing Periodical replacement parts, consumable parts durability, periodical servicing, special tools, solvents and lubricants
Chapter 5: Troubleshooting Introduction, troubleshooting, location of electrical parts, canon scanner test
Chapter 6: Parts Catalog Appendix: General Circuit Diagram, Main PCB Circuit Diagram, USB Connector PCB
Circuit Diagram The information in this service manual...
Service Manual - Page 6
...LOCATION OF ELECTRICAL PARTS 5-4
IV. How To Use Canon Scanner Test 5-5
CHAPTER 6 : PARTS CATALOG
FIGURE U01 ACCESSORY ......... 6-2 FIGURE U10 N650U 6-4
FIGURE U11 N656U 6-6 FIGURE U20 N1220U 6-8
APPENDIX
I . PERIODICAL REPLACEMENT PARTS 4-1
II. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) PERIODICAL SERVICING 4-1 IV. USB CONNECTOR PCB CIRCUIT...
Service Manual - Page 7
Front View 1-4 B. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) Connecting to the Host Computer
1-7 D. Scanning a Document .......... 1-8 V. SPECIFICATIONS 1-2 III. Installation 1-6 C. INSTALLATION 1-5
A. CHAPTER 1 GENERAL DESCRIPTIONS
I. Preface 1-5 B. EXTERIOR FEATURES 1-4
A. Rear View 1-4 IV. FEATURES 1-1 II. CUSTOMER'S DAILY...
Service Manual - Page 8
... the document cover to the host computer through a USB interface. 4. COPYRIGHT © 2000 CANON INC. High gradation and high image quality are flatbed image scanners incorporating the following features. 1. The scanner draws its power from USB port on the host computer requiring no AC adapter. CHAPTER 1
I. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU...
Service Manual - Page 9
... 14 bits) : 600 x 1200 dpi : 112 sec. (color, A4, 600 dpi)
37 sec. (grayscale, A4, 600 dpi) 16 sec. (preview)
: USB 1.1 (B plug) x 1
: Temperature range, 5 to 35˚C Humidity range, 10 to 90% Air pressure range, 613 to 1013 hPa
: 2.5W (during operation) : 256.0(W) x 372.5(D) x 34.0(H) mm : 1.4 kg
1 - 2
COPYRIGHT © 2000 CANON INC. SPECIFICATIONS
CanoScan N650U/N656U
MAIN...
Service Manual - Page 10
... sec. (grayscale, A4, 1200 dpi) 16 sec. (preview)
: USB 1.1 (B plug) x 1
: Temperature range, 5 to 35˚C Humidity range, 10 to 90% Air pressure range, 613 to 1013 hPa
: 2.5W (during operation) : 256.0(W) x 372.5(D) x 34.0(H) mm : 1.4 kg
Specifications are subject to change with product improvement. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU...
Service Manual - Page 14
... is connected to the USB port on the scanner. Refer to the USB port on the host computer using a supplied USB cable. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
1 - 7 CHAPTER 1
C.
q USB Port w USB Cable
1
2
Figure 1-5
COPYRIGHT © 2000 CANON INC.
For connecting/disconnecting the host computer's cables, refer to the manual supplied with the...
Service Manual - Page 19
The device driver installed in the main PCB.
Image signals read by the contact image sensor are image-processed by the A/D converter in the gate array. The converted image data are converted into digital data by the gate array, then output to the host computer via USB port.
CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED...
Service Manual - Page 33
...the drive motor. Host computer Control program
Main PCB
Gate array
MA+ MBMB+ MA- CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) The gate array generates the....
Motor driver
PA+ J2-1 PB- -2 PB+ -3 PA- -4
Drive motor M1
Figure 2-14
2 - 16
COPYRIGHT © 2000 CANON INC.
When the host computer changes the resolution, the control program sets to change...
Service Manual - Page 37
... the scanner. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) Outline
The control system consists of the gate array, buffer RAM (4Mbit), and ROM (2Mbit). Buffer RAM is not equipped with the host computer via USB interface in the device driver installed on the host computer controls the scanner operation by setting a comand...
Service Manual - Page 52
... to push it forward. Removing the USB connector PCB 1) Remove the document cover. 2) Remove the document glass unit. 3) Insert flat-blade screw drivers into both sides of the USB connector PCB to remove the USB connector PCB.
1
q Connector J2
Figure 3-15
COPYRIGHT © 2000 CANON INC. CHAPTER 3
IV. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN...
Service Manual - Page 55
... the flat cable on the driver unit side and pass it through the ferrite core.
Figure 3-19
3 - 14
COPYRIGHT © 2000 CANON INC. Straighten the bent end of the base frame.
1
q Bend Figure 3-18
b. Align the bend in the flat cable with a double-sided tape. CHAPTER 3
2. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED...
Service Manual - Page 64
... faster is recommended.) 3) Windows 98 Operating System 4) Scanner Device Driver
Macintosh platform 1) CanoScan N650U/N656U/N1220U 2) Power Macintosh 3) Macintosh OS (Version 8.5 or later) 4) Scanner Device Driver
Note: Install the scanner device driver before using the Canon Scanner Test.
COPYRIGHT © 2000 CANON INC. How To Use Canon Scanner Test
1. CANOSCAN N650U/N656U/N1220U REV.0 JUNE...
Service Manual - Page 74
...to find USB scanner" is normal, replace the flat cable.
Cause 2
: Scanner is not installed in the host computer.
Corrective Action : Unlock the carriage lock.
Corrective action : Install the device driver.
Cause 1
: Device driver for error messages which may occur during Canon Scanner Test are described below.
1) When Canon Scanner Test is started , "Unable to use.
Cause...
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