Service Manual
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... program, which functions as CPU. The device driver installed in the main PCB. 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 IN JAPAN (IMPRIME... AU JAPON) Drive motor Contact image sensor CS1 M1 J2 J3 J1 USB Connector PCB J2 Main PCB J1 Buffer RAM Host computer Control program Start button Gate array S1 Home position sensor Q4 Figure 2-2 2 - 2 COPYRIGHT © 2000 CANON...
... program, which functions as CPU. The device driver installed in the main PCB. 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 IN JAPAN (IMPRIME... AU JAPON) Drive motor Contact image sensor CS1 M1 J2 J3 J1 USB Connector PCB J2 Main PCB J1 Buffer RAM Host computer Control program Start button Gate array S1 Home position sensor Q4 Figure 2-2 2 - 2 COPYRIGHT © 2000 CANON...
Service Manual
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CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 2 D. When the host computer changes the resolution, the control program sets to change the ... a block diagram of the drive motor. Host computer Control program Main PCB Gate array MA+ MBMB+ MA- Motor driver PA+ J2-1 PB- -2 PB+ -3 PA- -4 Drive motor M1 Figure 2-14 2 - 16 COPYRIGHT © 2000 CANON INC. The control program analyzes each command sent from the host computer and sends a command to generate motor...
CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 2 D. When the host computer changes the resolution, the control program sets to change the ... a block diagram of the drive motor. Host computer Control program Main PCB Gate array MA+ MBMB+ MA- Motor driver PA+ J2-1 PB- -2 PB+ -3 PA- -4 Drive motor M1 Figure 2-14 2 - 16 COPYRIGHT © 2000 CANON INC. The control program analyzes each command sent from the host computer and sends a command to generate motor...
Service Manual
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...; 2000 CANON INC. 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 directly to the gate array register. The CPU is used as a work memory for image processing. CONTROL SYSTEM A. CANOSCAN N650U/N656U/N1220U REV...
...; 2000 CANON INC. 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 directly to the gate array register. The CPU is used as a work memory for image processing. CONTROL SYSTEM A. CANOSCAN N650U/N656U/N1220U REV...
Service Manual
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USB Connector PCB 1. 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. ELECTRICAL SYSTEM A. Figure 3-14 4) Disconnect the connector J2 to push it forward. CHAPTER 3 IV. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) 3 - 11
USB Connector PCB 1. 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. ELECTRICAL SYSTEM A. Figure 3-14 4) Disconnect the connector J2 to push it forward. CHAPTER 3 IV. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) 3 - 11
Service Manual
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CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 3 2. Align the bend in the flat cable with a double-sided tape. a. Precautions when atttaching the flat cable 1) Take care not to bend or deform the flat cable. 2) Locate the flat cable as follows. The flat cable on the driver unit side and pass it through the ferrite core. Straighten the bent end of the flat cable on the USB connector PCB side is attached with the left end corner of the base frame. 1 q Bend Figure 3-18 b. Figure 3-19 3 - 14 COPYRIGHT © 2000 CANON INC.
CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) CHAPTER 3 2. Align the bend in the flat cable with a double-sided tape. a. Precautions when atttaching the flat cable 1) Take care not to bend or deform the flat cable. 2) Locate the flat cable as follows. The flat cable on the driver unit side and pass it through the ferrite core. Straighten the bent end of the flat cable on the USB connector PCB side is attached with the left end corner of the base frame. 1 q Bend Figure 3-18 b. Figure 3-19 3 - 14 COPYRIGHT © 2000 CANON INC.
Service Manual
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...2 : Faulty connection of the connector J2 Corrective action : Securely connect the connector J2. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) 5 - 3 Cause 3 ...main PCB. Cause 2 : Faulty drive motor Corrective action : Replace the drive unit. COPYRIGHT © 2000 CANON INC. Cause 3 : Faulty main PCB Corrective action : Replace the drive unit. 2. Cause 2 : Faulty ... Cause 1 : Faulty installation of the device driver Corrective action : Uninstall the device driver and reinstall it. Troubleshooting Malfunctions 1.
...2 : Faulty connection of the connector J2 Corrective action : Securely connect the connector J2. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) 5 - 3 Cause 3 ...main PCB. Cause 2 : Faulty drive motor Corrective action : Replace the drive unit. COPYRIGHT © 2000 CANON INC. Cause 3 : Faulty main PCB Corrective action : Replace the drive unit. 2. Cause 2 : Faulty ... Cause 1 : Faulty installation of the device driver Corrective action : Uninstall the device driver and reinstall it. Troubleshooting Malfunctions 1.
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....exe (English/Japanese 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. Operating environment Windows platform 1) CanoScan N650U/N656U/N1220U 2) PC/AT Compatibles (Pentium or faster is switched according to...
....exe (English/Japanese 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. Operating environment Windows platform 1) CanoScan N650U/N656U/N1220U 2) PC/AT Compatibles (Pentium or faster is switched according to...
Service Manual
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... on a writable HDD to use. Corrective action : Unlock the carriage lock. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) 5 - 15 Cause 1 : Device driver for error messages which may occur during Canon Scanner Test are described below. 1) When Canon Scanner Test is started from a CD-ROM or write-protect HDD. Cause...
... on a writable HDD to use. Corrective action : Unlock the carriage lock. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) 5 - 15 Cause 1 : Device driver for error messages which may occur during Canon Scanner Test are described below. 1) When Canon Scanner Test is started from a CD-ROM or write-protect HDD. Cause...