i70 SERVICE MANUAL Canon
PIXUS 50i i70 SERVICE MANUAL Revision 0 QY8-1388-000 COPYRIGHT 200 3 CANON INC. CANON PIXUS 50i / i70 102001 XX 0.
Scope This manual has been issued by Canon Inc., to provide the service technicians of this product with the information necessary for qualified persons to learn technical theory, maintenance, and repair of products. The manual covers information applicable in all regions where the product is sold. For this reason, it may contain information that is not applicable to your region.
I. MANUAL OUTLINE This manual consists of the following three parts to provide information necessary to service the i70: Part 1: Maintenance Information on maintenance and troubleshooting of the i70 Part 2: Technical Reference New technology and technical information such as FAQ’s (Frequently Asked Questions) of the i70 Part 3: Appendix Block diagrams and pin layouts of the i70 Reference: This manual does not provide sufficient information of d isassembly and reassembly procedures.
II. TABLE OF CONTENTS Page 1-1 1-1 1-2 1-2 1-2 1-3 1-4 1-4 1-4 1-5 1-6 1-7 1-7 1-9 1-15 1-19 1-21 Part 1: MAINTENANCE 1. MAINTENANCE 1.1 Adjustment, Periodic Maintenance, Periodic Replacement Parts, and Replacement Consumables by Service Engineer 1.2 Customer Maintenance 1.3 Product Life 1.4 Special Tools 1.5 Serial Number Location 2. LIST OF ERROR DISPLAY / INDICATION 2.1 Operator Call Errors (by LED Blinking in Orange) 2.
Part 1 MAINTENANCE
1. MAINTENANCE 1.
1.2 Customer Maintenance Adjustment Timing Purpose Print head alignment At print head replacement To ensure accurate dot placement. Print head cleaning When print quality is not satisfying. To improve nozzle conditions. Print head deep cleaning When print quality is not satisfying, and not improved by print head cleaning When an ink tank becomes empty. When paper does not feed properly. When the battery power becomes low. To improve nozzle conditions.
1.
2. LIST OF ERROR DISPLAY / INDICATION Errors are indicated by the LED, and warnings are displayed on the monitor of the computer connected to the printer. 2.1 Operator Call Errors (by LED Blinking in Orange) LED blinking in orange 2 times No paper. 3 times Paper jam. 6 times The print head is not installed. 7 times The print head is not installed properly. (EEPROM data of the print head is faulty.) Warning: The waste ink absorber becomes almost full (to approx. 95% of the maximum capacity).
2.3 Warnings (1) Printer (no LED indications) Displayed warning Remarks Low black ink warning 1 (About half of the full amount remains.) The status is displayed on the monitor of the computer connected to the printer*1 . Low color ink warning 1 (About half of the full amount remains.) Low black ink warning 2 (Little ink remains. “!”) Low color ink warning 2 (Little ink remains. “!”) Low black ink warning 3 (An unknown amount remains. “?”) Low color ink warning 3 (An unknown amount remains.
2.4 Troubleshooting by Symptom Faulty operation Symptom The power does not turn on. The power turns off immediately after power-on. Solution Replace the - AC adapter, - battery pack, - DCDC board ass’y, or - logic board ass’y*1 . The print head is not recognized. The print head does not move to the home position. A strange noise occurs. Remove and re-install the print head, or replace the print head, or logic board ass’y*1 . Remove foreign material, or attach a removed part if any.
3. REPAIR 3.1 Notes on Service Part Replacement (and Disassembling/Reassembling) Service part Notes on replacement*1 Print unit (QM2-0290) - Be careful of the ferrite core position. See page 1-9 (1), for details. Logic board ass’y (QM2-0237) - Also replace the 4-item set of the drain pack ass’y and the 3 ink absorbers. See page 1-12 (3), for details. - The absolute time setting is necessary, as the coin battery unit is removed. See page 1-12 (2), for details.
(Notes on Service Part Replacement - cont’d- ) Service part Notes on replacement*1 Adjustment/settings*2 Base ass’y (QL2-0193) Door sensor board ass’y (QM2-0240) - Service test print DCD board ass’y (QM2-0242) USB board ass’y (QM2-0312) Timing slit strip film (QC1-1143) Operation check - Upon contact with the film, wipe the film with ethanol. - Confirm no grease is on the film. (Wipe off any grease thoroughly with ethanol.) - Do not bend the film.
3.2 Special Notes on Repair Servicing (1) Flexible cable and harness wiring, connection Be careful of wiring of the flexible cables and harness, and positioning of the yellow tape (QY9-0060) to fix the harness and the black tape (QY9-0061) to fix the coin battery unit and to protect the harness from damaged. Improper wiring or connection may cause breakage of a line, leading to ignition or emission of smoke.
Complete Harness Wiring DCD harness LF motor cable AP motor harness Lithium battery unit CR motor harness USB harness Bottom View Coin Battery Unit Removed Shield plate DC jack harness (under the shield plate) Shield Plate Removed 1 - 10
To secure the panel flexible cable (QK1-0051) To secure the DCDC board harness Print Unit and Drain Pack Ass’y Top View To secure the purge sensor flexible cable (QK1-0053) To secure the flexible cable holder (QC1-1310) To secure the panel flexible cable (QK1-0051) Print Unit and Drain Pack Ass’y Bottom View To protect the carriage motor harness To secure the built -in lithium battery unit (QM2-0292) 1 - 11
(2) Absolute time setting when the coin battery unit is removed To keep the absolute time, a Real Time Clock (RTC) is built into the lithium battery unit (QM2-0292). When the lithium battery unit is removed, the RTC is reset.
(4) Pressing plate unit installation When installing the pressing plate unit (QM2-0300), take care that the paper lifting plate is not under the paper return tabs of the print unit. (If placed under the paper return tabs, the paper lifting plate will not move up and down properly.) With regard to the spring, do not extend it more than 5mm. (If the spring is extended more than 5mm, it may cause skewed paper feeding.
(5) Main case unit assembling When assembling the main case unit (QM2-0287/0310), assemble with the print head cover in the closed position. If the print head cover is open, the print head cover switch on the back of the main case unit will contact the cover sensor of the door sensor board ass’y (QM2-0240), and the sensor is likely to be damaged. The print head cover should be closed.
3.3 Adjustment / Settings (1) User mode Function Print head manual cleaning Print head deep cleaning Paper feed roller cleaning Nozzle check pattern printing Print head alignment Print head replacement Procedures - Cleaning both black and color: See “Standalone printer operation” below. - Cleaning black or color separately, or both black and color: Perform from the printer driver utility. - Cleaning black or color separately, or both black and color: Perform from the printer driver utility.
1) Close the print head cover, and turn off the printer. While pressing the Resume/Cancel button, press the Power button. (Do not release the buttons. The LED lights in green to indicate that a function is selectable.) 2) While holding the Power button, release the Resume/Cancel button. (Do not release the Power button.) 3) While holding the Power button, press the Resume/Cancel button 3 times, and then release the Power and Resume/Cancel buttons.
Caution: 5) Do not unplug the power cord while the LED is blinking in green. If the power cord is removed, downloading the flash ROM data fails *4 . When the LED stops blinking and lights in green, press the Power button. (The downloading is finished, and the printer is turned off.) Caution: While the flash ROM data is downloaded, the Resume/Cancel button and the print head cover switch are invalid. *1: In the flash ROM download mode, the printer ID is automatically set to the PIXUS 50i.
1 2 1. 2. 3. 4. Select the USB port. Click Send File to open the file selection dialog box. Select All Files (*.*), and the download file to send to the printer, and send it to the printer. When data sending finishes, exit usbrwt.exe.
3.4 Verification Items (1) Service test print On the service test print (sample on page 1-20), confirm the EEPROM information as shown below. (The information is given in the upper portion of the printout.) ROM version Destination: i70 Dest = 01 50i Dest = 02 Overseas Japan Main waste ink amount (%) Borderless print waste ink amount (%) Total number of pages printed Current time of the coin battery unit internal timer eg.
Check 1: Top of form accuracy Check 2: Nozzle check pattern Check 3: Straight lines Check 4: Halftone 1 - 20
4. PRINTER TRANSPORTATION METHOD This section describes the procedures for transporting the printer (for returning after repair, etc.). 1. Keep the print head and ink tanks installed in the carriage. 2. Turn off the printer, and secure the carriage locks in the home position. (When the printer is turned off, the carriage is automatically locked in place.) Caution: If the print head is removed from the printer and left alone by itself, ink (especially the pigment black ink) is likely to dry.
Part 2 TECHNICAL REFERENCE
1. NEW TECHNOLOGIES (1) Direct digital camera printing Printing can be performed directly from a digital camera. During the direct digital camera printing, the following functions are not available: - Print head alignment*1 - Remaining ink amount detection *1: If the print head alignment has not been performed via the computer connected to the printer, uni-directional printing is performed, and the print speed is lower than that of bidirectional printing.
2. CLEANING MODE AND AMOUNT OF INK PURGED To prevent printing problems due to bubbles, dust, or ink clogging, print head cleaning is performed before the start of printing, except in the following cases: - Cleaning on arrival: Performed when the print head cover is closed. - Cleaning by dot count: Performed after ejection of paper. - Manual cleaning / deep cleaning: Performed manually.
3. FAQ (Specific Problems and Solutions) No. 1. Occurrence level* B Function Symptom Condition Cause Solution Possible call or complaint Paper feeding Paper jam Paper edge creasing - Plain paper (soft paper) - When about 30 sheets are loaded. - Paper condition (curled, or cut edge orientation) Depending on combination of the above conditions, the first several pages may not feed properly. When many sheets of paper are set, paper feed capability can be slightly lowered.
