Toshiba Aplio SSA-770A Service Manual page 165

No. 2D730-148E*O
(5) Block diagram
(a) PSA block diagram
Status Outaut
PSA ENH
Main
4
Over-Current
Switcher
OverTemperature
IC.501
48\
INPL
0
I
JT
Main Rect.
;;t;; L-Q
010 Dll
H
Switching
: :
Transformer
D14
Filter
: :
: :
Tl
u
Linear Reg.
: .
L6 L7 - ICI 8 EBN
: :
: :
-1-111 Bridge
'base-shift
soft Switcher
II-Q4
D16
- IIIC --FE-
: :
Filter Linear Reg.
: :
L8 L9 - IC2
i i
:a Pl4AQ
: :
: :
D18
: :
: :
; .
m PIOOHV
: :
: :
: :
D20 Filter
: :
i i
-
-
-
L12 L13
-
LinegReg.
* MIOOHV
: :
T2
: :
: :
Filter
L32 L33
: :
P7A
P5A
P5AQ
T3
Ma9p
D37 D39 Filter Linear Re
-
n llIc-
& - + - L36-L38
Q12 Qli
Mac#gw
D45 D46
Filter
& -+- L41-L43
T401
Internal Use Supplies
PVCC PVEE
D405 Filter Linear Reg.
n
L402 L403 - IC402
4
A
I
T I
J" L 1 1 I D4$ 1 1 Filter
L404 L406
---
VTXI
CVTXI H/CVTXl L (Differential Analog Control Input)
r Pre-Regulator
IC801 IC804
0
CVTXOH/CVTXOL (Differential Analog Control Input)
a
I
m
VTXO
Pre-Regulator
IC802 IC808
WX VOLTAGE
= 9.00 x CVTX
6-10