Canon imageRUNNER ADVANCE 9070 PRO series Service Manual Digest page 467

COPIER> ADJUST> HV-TR
2EL Set of Sec Trns Static Eliminator bias
Lv.2 Details To adjust the application voltage of the Secondary Transfer Static
Eliminator.
As the value is incremented by 1, the voltage is increased by 500V.
When the Static Eliminator trace (crow's footprint image) occurs,
increase the value.
When the Static Eliminator trace (water-drop image) and separation
failure occur, decrease the value.
If the voltage after the adjustment is out of -4000 to 0V, it is forcibly
set to the upper/lower limit value.
Use case When an image failure due to the Secondary Transfer Static
Eliminator occurs (related with Static Eliminator trace and separation
failure)
Caution If the value is set too high, the Static Eliminator trace occurs again.
Display/adj/set range -8 to 6
Unit 1 V
Default value 0
POSTSW-K Pre-trns charging assembly ON/OFF
Lv.2 Details To set ON/OFF of the Pre-transfer Charging Assembly.
Use case When an image is smeared by the Drum
Adj/set/operate method 1) Enter the setting value, and then press OK key.
2) Turn OFF/ON the main power switch.
Caution When 0 is set, black mottled image and/or leopard patterns (horizontal
long lines) might occur.
Display/adj/set range 0 to 1
0: OFF, 1: ON
Default value 1
2TC-I11 [Not used (for expansion)]
2ELSW Sec Trns Static Eliminator bias ON/OFF
Lv.2 Details To set ON/OFF of the Secondary Transfer Static Eliminator bias.
Use case When stain on the back of paper occurs at secondary transfer
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 0 to 1
0: OFF, 1: ON
Default value 1
Related service mode COPIER> DISPLAY> HV-STS> 2EL
COPIER> ADJUST> HV-TR
1TR-TGY2 Adj Y Pry Trns ATVC tgt crrnt:1/2 speed
Lv.2 Details To adjust the offset of the target current value for Y upon primary
transfer ATVC control at 1/2 speed.
Increase the value when spots, mottled image, or image failure due
to insufficient transfer current occurs.
Decrease the value when image fogging due to transfer memory or
drum memory due to strong transfer current occurs.
Use case When an image failure due to inappropriate primary transfer current
setting occurs
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.
Display/adj/set range -10 to 10
Default value 0
1TR-TGM2 Adj M Pry Trns ATVC tgt crrnt:1/2 speed
Lv.2 Details To adjust the offset of the target current value for M upon primary
transfer ATVC control at 1/2 speed.
Increase the value when spots, mottled image, or image failure due
to insufficient transfer current occurs.
Decrease the value when image fogging due to transfer memory or
drum memory due to strong transfer current occurs.
Use case When an image failure due to inappropriate primary transfer current
setting occurs
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.
Display/adj/set range -10 to 10
Default value 0
1TR-TGC2 Adj C Pry Trns ATVC tgt crrnt:1/2 speed
Lv.2 Details To adjust the offset of the target current value for C upon primary
transfer ATVC control at 1/2 speed.
Increase the value when spots, mottled image, or image failure due
to insufficient transfer current occurs.
Decrease the value when image fogging due to transfer memory or
drum memory due to strong transfer current occurs.
Use case When an image failure due to inappropriate primary transfer current
setting occurs
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.
Display/adj/set range -10 to 10
Default value 0
5
5-239