■ After replacing CIS units
1. AGC adjustment
1. Entering a provisional value
Change the foregoing values to "1,000".
• COPIER > ADJUST > CCD > LED-BW-R (Adjustment of LED light-up time (R) at B&W reading)
• COPIER > ADJUST > CCD > LED-BW-G (Adjustment of LED light-up time (G) at B&W reading)
• COPIER > ADJUST > CCD > LED-BW-B (Adjustment of LED light-up time (B) at B&W reading)
Change the foregoing values to "1,200"
• COPIER > ADJUST > CCD > LED-CL-R (Adjustment of LED light-up time (R) at color reading)
• COPIER > ADJUST > CCD > LED-CL-G (Adjustment of LED light-up time (G) at color reading)
• COPIER > ADJUST > CCD > LED-CL-B (Adjustment of LED light-up time (B) at color reading)
2. Adjust the white level in the following service mode.
• COPIER > FUNCTION > CCD > BW-AGC (CIS intensity adjustment in ADF (B&W))
• COPIER > FUNCTION > CCD > CL-AGC (CIS intensity adjustment in ADF (color))
3. If the operation was "successful", this procedure is completed. (There is no need to write the value on the service label.)
4. How to judge whether the operation was successful or failed
Whether the operation was successful or failed is not shown on the UI, so perform the following procedure to judge if
the operation was successful or failed.
B&W mode
• COPIER > ADJUST > CCD > LED-BW-R (Adjustment of LED light-up time (R) at B&W reading)
• COPIER > ADJUST > CCD > LED-BW-G (Adjustment of LED light-up time (G) at B&W reading)
• COPIER > ADJUST > CCD > LED-BW-B (Adjustment of LED light-up time (B) at B&W reading)
Check the foregoing values. If all of them remain "1,000", the operation result is judged to be "failed".
If the operation result is judged to be "failed", turn OFF and then ON the power, and execute COPIER > FUNCTION >
CCD > BW-AGC again.
Color mode
• COPIER > ADJUST > CCD > LED-CL-R (Adjustment of LED light-up time (R) at color reading)
• COPIER > ADJUST > CCD > LED-CL-G (Adjustment of LED light-up time (G) at color reading)
• COPIER > ADJUST > CCD > LED-CL-B (Adjustment of LED light-up time (B) at color reading)
Check the foregoing values. If all of them remain "1,200", the operation result is judged to be "failed".
If the operation result is judged to be "failed", turn OFF and then ON the power, and execute COPIER > FUNCTION >
CCD > CL-AGC again.
2. Automatic adjustment of the stream reading position
1. Entering a provisional value
Set the value of
• COPIER > ADJUST > ADJ-XY > STRD-POS (Adjustment of reading position at ADF stream reading)
to "-20".
2. Automatic adjustment of the stream reading position
Execute
• COPIER > FUNCTION > INSTALL > STRD-POS (Scan position auto adj in ADF mode)
If the operation was successful, write the value of STRD-POS on the service label.
3. How to judge whether the operation was successful or failed
Whether the operation was successful or failed is not shown on the UI, so perform the following procedure to judge if
the operation was successful or failed.
Check the value of
• COPIER > ADJUST > ADJ-XY > STRD-POS (Adjustment of reading position at ADF stream reading)
If it remains "-20", the operation is judged to be "failed".
If the operation is judged to be "failed", turn OFF and then ON the power, and execute COPIER > FUNCTION > INSTALL
> STRD-POS again.
3. Adjust the white level in the following service mode, and write the final setting values on the service label.
1. Enter the values in the following service mode items respectively.
• In COPIER > ADJUST > CCD > DFTAR-R, set "299".
• In COPIER > ADJUST > CCD > DFTAR-G, set "309".
• In COPIER > ADJUST > CCD > DFTAR-B, set "307" .
• In COPIER > ADJUST > CCD > DFTAR-BW, set "315".
2. Place a sheet of A4 or LTR blank paper (paper recommended by Canon) on the Platen Glass of the reader, and execute
• COPIER > FUNCTION > CCD > DF-WLVL1 (White level adj in book mode (color))
3. Place the same blank paper on the ADF, and execute
• COPIER > FUNCTION > CCD > DF-WLVL2 (White level adj in ADF mode (color))
5. Adjustment
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Содержание MF724Cdw
Страница 1: ...Revision 2 0 MF720 Series Service Manual ...
Страница 12: ...Product Overview 1 Product Lineups 5 Product Features 7 Specifications 8 Name of Parts 14 ...
Страница 33: ...How to release Jam Remove the jammed paper and open close the ADF upper cover 2 Technical Explanation 25 ...
Страница 79: ...4 Click Import Export Import 1 2 2 Technical Explanation 71 ...
Страница 101: ...Periodical Service 3 Periodically Replaced Parts 94 Durable Parts 95 Periodical Services 96 Cleaning 97 ...
Страница 102: ...Periodically Replaced Parts No periodically replaced parts is set for this product 3 Periodical Service 94 ...
Страница 103: ...Durable Parts No durable parts is set for this product 3 Periodical Service 95 ...
Страница 104: ...Periodical Services No periodical service is set for this product 3 Periodical Service 96 ...
Страница 232: ...Adjustment 5 Overview 225 Adjustment at Parts Replacement 226 ...
Страница 248: ...Troubleshooting 6 Test Print 241 Trouble shooting items 243 Version Upgrade 244 Debug Log 248 ...
Страница 258: ...Error Jam Alarm 7 Outline 251 Error Codes 252 Jam Code 257 ...
Страница 267: ...Service Mode 8 Overview 260 COPIER 264 FEEDER 300 FAX 302 TESTMODE 308 ...
Страница 322: ...APPENDICES Service Tools 315 General Circuit Diagram 316 Print Sequence 317 Backup Data 318 ...