Canon imageRUNNER ADVANCE C5051 Series Service Manual page 836

■ EXP-LED
COPIER > ADJUST > EXP-LED
PR-EXP-Y Setting of Y Pre-exposure LED current
Lv.2 Details To set the current of the Pre-exposure LED (Y).
Increase the value when taking a measure for drum ghost.
Decrease the value when potential is not applied well.
Use case - When drum ghost is significant (drum pitch is not correct)
- When potential is not applied well
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Caution Do not use this at the normal service.
Display/adj/set range 0 to 3
4 to 15: Not used
Unit uA
Default value 1
Related service mode COPIER> ADJUST> V-CONT> VBACK-Y
PR-EXP-M Setting of M Pre-exposure LED current
Lv.2 Details To set the current of the Pre-exposure LED (M).
Increase the value when taking a measure for drum ghost.
Decrease the value when potential is not applied well.
Use case - When drum ghost is significant (drum pitch is not correct)
- When potential is not applied well
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Caution Do not use this at the normal service.
Display/adj/set range 0 to 3
4 to 15: Not used
Unit uA
Default value 1
Related service mode COPIER> ADJUST> V-CONT> VBACK-M
PR-EXP-C Setting of C Pre-exposure LED current
Lv.2 Details To set the current of the Pre-exposure LED (C).
Increase the value when taking a measure for drum ghost.
Decrease the value when potential is not applied well.
Use case - When drum ghost is significant (drum pitch is not correct)
- When potential is not applied well
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Caution Do not use this at the normal service.
Display/adj/set range 0 to 3
4 to 15: Not used
Unit uA
Default value 1
Related service mode COPIER> ADJUST> V-CONT> VBACK-C
8
Service Mode > COPIER > ADJUST > EXP-LED
8 Service Mode > COPIER > ADJUST > EXP-LED
COPIER > ADJUST > EXP-LED
PR-EXP-K Setting of Bk Pre-exposure LED current
Lv.2 Details To set the current of the Pre-exposure LED (Bk).
Increase the value when taking a measure for drum ghost.
Decrease the value when potential is not applied well.
Use case - When drum ghost is significant (drum pitch is not correct)
- When potential is not applied well
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Caution Do not use this at the normal service.
Display/adj/set range 0 to 3
4 to 15: Not used
Unit uA
Default value 1
Related service mode COPIER> ADJUST> V-CONT> VBACK-K
8-136
T-8-33
8-136