11
© 2005 - 2008 TOSHIBA TEC CORPORATION All rights reserved
e-STUDIO163/203
DRUM RELATED SECTION
11 - 5
11.4
High-Voltage Output Control Circuit
11.4.1
General description
In this equipment, the high-voltage generation circuit is included in the switching regulator. It is con-
trolled by the ON/OFF signal of each bias output from the ASIC on the MAIN board and reference volt-
age Vc of each bias output from the SoC via the D/A converter. It generates the output current and
voltage of each bias according to the +24VCOV-OFF input from the low-voltage generation circuit of the
switching regulator.
Fig. 11-3
Switching regulator
[Low-voltage section]
[High-voltage section]
HVMVR-1
HVDTR-1
HVTVR-1
HVSAV-1
HVTM-0
HVSDWN-0
HVTAC-0
HVCLK-0
HVTT-0
HVTSP-0
HVTGB-0
Flash ROM
SoC
MAIN board
ASIC
D/A
converter
Digital data
Adjustment
value
Analog data
(Reference voltage: Vc)
Transfer guide
bias
Transfer
bias
Separation
bias
Developer bias
Charger bias
Leakage detection
Developer
DC
Developer
AC
Needle electrode
Grid
Magnetic roller
Transfer charger
Separation charger
Transfer guide
Grid bias
Needle
electrode
bias
+24VCOV-OFF
+24VCOV-OFF
Summary of Contents for e-STUDIO163
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Page 10: ...e STUDIO163 203 2005 2008 TOSHIBA TEC CORPORATION All rights reserved CONTENTS 4 ...
Page 66: ...e STUDIO163 203 2005 2008 TOSHIBA TEC CORPORATION All rights reserved COPY PROCESS 3 14 ...
Page 86: ...e STUDIO163 203 2005 2008 TOSHIBA TEC CORPORATION All rights reserved CONTROL PANEL 5 8 ...
Page 120: ...e STUDIO163 203 2005 2008 TOSHIBA TEC CORPORATION All rights reserved LASER OPTICAL UNIT 8 8 ...
Page 130: ...e STUDIO163 203 2005 2008 TOSHIBA TEC CORPORATION All rights reserved DRIVE UNIT 9 10 ...
Page 222: ...e STUDIO163 203 2005 2008 TOSHIBA TEC CORPORATION All rights reserved FUSER EXIT UNIT 13 20 ...
Page 230: ...e STUDIO163 203 2005 2008 TOSHIBA TEC CORPORATION All rights reserved POWER SUPPLY UNIT 14 8 ...
Page 234: ...e STUDIO163 203 2005 2008 TOSHIBA TEC CORPORATION All rights reserved PC BOARDS 15 4 ...
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