Service Manual
Page 37
...interface in the device driver installed on the host computer controls the scanner operation by setting a comand directly to the gate array register. Outline The control system consists of the gate array, buffer RAM (4Mbit), and ROM (2Mbit). CANOSCAN N650U/N656U/N1220U REV.0 JUNE... 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) The scanner communicates with the scanner. The CPU is used as a work memory for image processing. Host computer Control program gate array USB I/F A0-7 D0-15 Buffer RAM ROM Control signal Figure 2-21 2 - 20 COPYRIGHT © 2000 CANON...
...interface in the device driver installed on the host computer controls the scanner operation by setting a comand directly to the gate array register. Outline The control system consists of the gate array, buffer RAM (4Mbit), and ROM (2Mbit). CANOSCAN N650U/N656U/N1220U REV.0 JUNE... 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) The scanner communicates with the scanner. The CPU is used as a work memory for image processing. Host computer Control program gate array USB I/F A0-7 D0-15 Buffer RAM ROM Control signal Figure 2-21 2 - 20 COPYRIGHT © 2000 CANON...
Service Manual
Page 62
...Faulty connection of the device driver Corrective action : Uninstall the device driver and reinstall it. Cause 2 : Faulty drive motor Corrective action : Replace the drive unit. Host computer not detecting the scanner Cause 1 : Faulty installation... of the flat cable Corrective action : Securely connect the flat cable to the scanner and host computer. COPYRIGHT © 2000 CANON INC. CHAPTER 5 B. Cause 2 : Faulty connection of the USB cable Corrective...action : Replace the contact image sensor. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) 5 - 3
...Faulty connection of the device driver Corrective action : Uninstall the device driver and reinstall it. Cause 2 : Faulty drive motor Corrective action : Replace the drive unit. Host computer not detecting the scanner Cause 1 : Faulty installation... of the flat cable Corrective action : Securely connect the flat cable to the scanner and host computer. COPYRIGHT © 2000 CANON INC. CHAPTER 5 B. Cause 2 : Faulty connection of the USB cable Corrective...action : Replace the contact image sensor. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) 5 - 3
Service Manual
Page 64
... (IMPRIME AU JAPON) 5 - 5 CANON SCANNER TEST A. How To Use Canon Scanner Test 1. Outline Canon Scanner Test is utility software to be used in Windows.) Macintosh : ScantestHMe B. Windows : ScanTest.exe (English/Japanese is switched according to the language to check if faulty scanner operation is recommended.) 3) Windows 98 Operating System 4) Scanner Device Driver Macintosh platform 1) CanoScan N650U/N656U/N1220U 2) Power Macintosh 3) Macintosh...
... (IMPRIME AU JAPON) 5 - 5 CANON SCANNER TEST A. How To Use Canon Scanner Test 1. Outline Canon Scanner Test is utility software to be used in Windows.) Macintosh : ScantestHMe B. Windows : ScanTest.exe (English/Japanese is switched according to the language to check if faulty scanner operation is recommended.) 3) Windows 98 Operating System 4) Scanner Device Driver Macintosh platform 1) CanoScan N650U/N656U/N1220U 2) Power Macintosh 3) Macintosh...
Service Manual
Page 74
... image sensor. Cause 1 : Carriage lock is locked. Cause : Canon Scanner Test is normal, replace the flat cable. Corrective Action : Replace the drive Unit. 4) "Unable to use. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) 5 - 15 Corrective action : Install the device driver. Cause 2 : Scanner is displayed. Corrective action : Unlock the carriage lock...
... image sensor. Cause 1 : Carriage lock is locked. Cause : Canon Scanner Test is normal, replace the flat cable. Corrective Action : Replace the drive Unit. 4) "Unable to use. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON) 5 - 15 Corrective action : Install the device driver. Cause 2 : Scanner is displayed. Corrective action : Unlock the carriage lock...