Canon imageRUNNER ADVANCE C5051 Series Service Manual page 799

COPIER > ADJUST > DENS
DMAX-K Adj D-max ctrl Bk-color dens target VL
Lv.2 Details An image failure might occur because the density target value of the
D-max control becomes out of the setting table due to environment
change.
Adjust the offset of the Bk-color density target value of D-max
control.
The offset is reset when D-max control (full adjustment) is executed.
Use case When any image failure occurs due to environment change
Adj/set/operate method 1) Enter the setting value (switch negative/positive by -/+ key) and
press OK key.
2) Turn OFF/ON the main power switch.
Caution Do not use this at the normal service.
Display/adj/set range -128 to 128
Default value 0
P-ALPHA Adjustment of Patch Sensor alpha value
Lv.1 Details To adjust the correction coefficient alpha value of the Patch Sensor.
The value multiplied by 1000 is displayed on the screen.
Use case When the Patch Sensor fails to read the density
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Display/adj/set range 512 to 2047
Default value 1200
Related service mode COPIER> FUNCTION> MISC-P> PT-LPADJ
REF-K Bk toner dens target VL entry
Lv.2 Details To enter the target value of the ATR Sensor (Bk) of ATR control after
RAM clear.
Use case When checking the value before RAM clear and re-entering it after
RAM clear
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 255
Default value 90(RAM clear)
DMLMT-HY Adj Y-clr charge DC voltage upper limit
Lv.2 Details To adjust the offset of the charging DC voltage upper limit for Y in
D-max control.
Use case When a failure occurs due to limiter of D-max control
Adj/set/operate method 1) Enter the setting value (switch negative/positive by -/+ key) and
press OK key.
2) Execute quick adjustment of auto gradation adjustment.
Caution Do not use this at the normal service.
Display/adj/set range -300 to 300
Unit V
Default value 0
Related service mode COPIER>ADJUST>DENS>DMLMT-LY
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Service Mode > COPIER > ADJUST > DENS
8 Service Mode > COPIER > ADJUST > DENS
COPIER > ADJUST > DENS
DMLMT-HM Adj M-clr charge DC voltage upper limit
Lv.2 Details To adjust the offset of the charging DC voltage upper limit for M in
D-max control.
Use case When a failure occurs due to limiter of D-max control
Adj/set/operate method 1) Enter the setting value (switch negative/positive by -/+ key) and
press OK key.
2) Execute quick adjustment of auto gradation adjustment.
Caution Do not use this at the normal service.
Display/adj/set range -300 to 300
Unit V
Default value 0
Related service mode COPIER>ADJUST>DENS>DMLMT-LM
DMLMT-HC Adj C-clr charge DC voltage upper limit
Lv.2 Details To adjust the offset of the charging DC voltage upper limit for C in
D-max control.
Use case When a failure occurs due to limiter of D-max control
Adj/set/operate method 1) Enter the setting value (switch negative/positive by -/+ key) and
press OK key.
2) Execute quick adjustment of auto gradation adjustment.
Caution Do not use this at the normal service.
Display/adj/set range -300 to 300
Unit V
Default value 0
Related service mode COPIER>ADJUST>DENS>DMLMT-LC
DMLMT-HK Adj Bk-clr charge DC voltage upper limit
Lv.2 Details To adjust the offset of the charging DC voltage upper limit for Bk in
D-max control.
Use case When a failure occurs due to limiter of D-max control
Adj/set/operate method 1) Enter the setting value (switch negative/positive by -/+ key) and
press OK key.
2) Execute quick adjustment of auto gradation adjustment.
Caution Do not use this at the normal service.
Display/adj/set range -300 to 300
Unit V
Default value 0
Related service mode COPIER>ADJUST>DENS>DMLMT-LK
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