Chapter 7
7-15
7.5.3 Pre-Transfer Charging Mechanism
7.5.3.1 Outline
0010-8054
The following items are associated with the pre-transfer charging control system:
[1] DC bias constant current control
[2] AC bias constant voltage control
[3] output control suited to environment (fuzzy control)
The following shows the components related to the pre-transfer charging control system:
F-7-20
DC controller PCB
J510A
J723
J722
AC+DC
J741
J742
J721
J734
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
0 V
24 VH
24 VH
HVDC_REMOTE
HVAC_ON
GND
GND
HVAC_ON
24VP
POST_DC_CNTR
POST/SEP_ERR
High-voltage PCB
GND
GND
1 2 3 4
Relay PCB
Pre-transfer charging wire
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
High-Voltage AC PCB
High-Voltage
AC transformer
Voltage input of between 0 and 12 V.
Uses this voltage to control the current value of the pre-transfer bias.
300
A
The current value of the pre-transfer bias varies as
follows according to the potential of PTDC-CNT:
3V
11V 12V
POST_DC_CNT
When '1', high-voltage DC
output is ready.
When '1', the high-voltage
AC output is ready.
When '1', high-voltage
AC output is ON.
AC output: 7.0 to 9.0 kVpp
If the current is too high
or too low, '1'.
1
2
18
17
Summary of Contents for IMAGERUNNER 7095 PRINTER
Page 20: ...Chapter 1 Introduction...
Page 46: ...Chapter 2 Installation...
Page 88: ...Chapter 3 Basic Operation...
Page 94: ...Chapter 4 Main Controller...
Page 116: ...Chapter 5 Original Exposure System...
Page 165: ...Laser Exposure Chapter 6...
Page 175: ...Chapter 7 Image Formation...
Page 231: ...Chapter 8 Pickup Feeding System...
Page 287: ...Chapter 9 Fixing System...
Page 312: ...Chapter 10 External and Controls...
Page 346: ...Chapter 11 MEAP...
Page 350: ...Chapter 12 RDS...
Page 360: ...Chapter 13 Maintenance Inspection...
Page 375: ...Chapter 14 Standards Adjustments...
Page 407: ...Chapter 15 Correcting Faulty Images...
Page 433: ...Chapter 16 Self Diagnosis...
Page 460: ...Chapter 17 Service Mode...
Page 559: ...Chapter 18 Upgrading...
Page 583: ...Chapter 19 Service Tools...
Page 588: ...APPENDIX...
Page 615: ......