e-STUDIO170F Circuit Description
January 2005 © TOSHIBA TEC
7 - 70
7.6
LVPS
This section describes the functions of each circuit on the LVPS.
Fig.7-51
The LVPS consists of the transformer, regulator, photo-coupler, and other peripheral devices.
It delivers each stable power supply (+24V, ±12V, +5V) to the entire system. The power unit is con-
nected to CN17 on the Main PBA.
LIVE
NEUTRAL
+5VPS
AG
PG
PSC
SG
-12V
+12V
+24VILS
+24V
C/O-IN
1
2
10,11
14
2
3
6
+5V
7
CN3
CN1
12,13,15
1
4
5
LIVE
2
NEUTRAL
1
AC120V/
AC220-240V
CN2
CN5
CN4
Fuser
LVPS
Front cover
open switch
Main PBA
Noise filter
circuit
Heater
drive
circuit
Stabilizing circuit
Overvoltage protection
circuit
HTON1X
8
HTON2X
9
Power supply voltage
generation circuit
Summary of Contents for ESTUDIO170F
Page 2: ... 2005 TOSHIBA TEC CORPORATION All rights reserved ...
Page 192: ...e STUDIO170F Function Settings January 2005 TOSHIBA TEC 4 132 ...
Page 214: ...e STUDIO170F Mechanical Description January 2005 TOSHIBA TEC 5 22 ...
Page 308: ...e STUDIO170F Circuit Description January 2005 TOSHIBA TEC 7 78 ...
Page 372: ...e STUDIO170F Removal Replacement Adjustment January 2005 TOSHIBA TEC 8 64 ...
Page 490: ...e STUDIO170F Appendix January 2005 TOSHIBA TEC 12 8 ...
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