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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.
5. 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.
6. 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))
4. Place a sheet of A4 or LTR blank paper (paper recommended by Canon) on the Platen Glass of the reader again, and
execute
• COPIER > FUNCTION > CCD > DF-WLVL3 (White level adj in book mode (B&W))
5. Place the same blank paper on the ADF again, and execute
• COPIER > FUNCTION > CCD > DF-WLVL4 (White level adj in ADF mode (B&W))
6. If the operation was successful, write the setting value on the service label.
7. Whether the operation was successful or failed is not shown on the UI, so perform the following procedure to judge if
the operation is successful or not.
• COPIER > ADJUST > CCD > DFTAR-R (Adjustment of shading target value (R) at ADF reading)
• COPIER > ADJUST > CCD > DFTAR-G (Adjustment of shading target value (G) at ADF reading)
• COPIER > ADJUST > CCD > DFTAR-B (Adjustment of shading target value (B) at ADF reading)
Check the foregoing values, and if all the values remain the same with those you entered, the operation result is judged
to be "failed".
5. Adjustment
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Summary of Contents for MF724Cdw
Page 1: ...Revision 2 0 MF720 Series Service Manual ...
Page 12: ...Product Overview 1 Product Lineups 5 Product Features 7 Specifications 8 Name of Parts 14 ...
Page 79: ...4 Click Import Export Import 1 2 2 Technical Explanation 71 ...
Page 103: ...Durable Parts No durable parts is set for this product 3 Periodical Service 95 ...
Page 104: ...Periodical Services No periodical service is set for this product 3 Periodical Service 96 ...
Page 232: ...Adjustment 5 Overview 225 Adjustment at Parts Replacement 226 ...
Page 248: ...Troubleshooting 6 Test Print 241 Trouble shooting items 243 Version Upgrade 244 Debug Log 248 ...
Page 258: ...Error Jam Alarm 7 Outline 251 Error Codes 252 Jam Code 257 ...
Page 267: ...Service Mode 8 Overview 260 COPIER 264 FEEDER 300 FAX 302 TESTMODE 308 ...
Page 322: ...APPENDICES Service Tools 315 General Circuit Diagram 316 Print Sequence 317 Backup Data 318 ...