Block Diagram -Power Section - Sony HT-BE1 Service Manual

4-3. BLOCK DIAGRAM — POWER SECTION —
AMP
IC301
2
L
AMP
IC303
SL 2
MAIN
A
AMP
SECTION
IC302 (2/2)
(Page 12)
6
C
AMP
IC302 (1/2)
SW 2
D-5.6V
(SW)
D702,703
LCD
BACK LCD DRIVER
IC701
LIGHT
COM0
11 OSC2
I I
OSC1
14 COM3
LCD701
LIQUID
CRYSTAL
15 SEG0
DISPLAY
I I
PANEL
32 SEG17
REMOTE
CONTROL
1
RECEIVER
Q805
IC702
S702
S701
MENU/ENTER
I /
RE701
VOL/SELECT
VOLUME
ENCODER
• Signal path
D-5.6V READY
: LINE
(SW) 3.3V
: DIGITAL AUDIO
(RED)
(GRN)
• R-ch is omitted due to
same as L-ch.
• Abbreviation
D701
I /
CND: Canadian model
MX : Mexican model
VOLUME
CONTROL
IC304
LINA
LOUTA
BUFFER
1 4 3
Q324
LINC LOUTC
BUFFER
1 10 9
Q321
LINB LOUTB
BUFFER
7 7 6
Q326
RINB
ROUTB BUFFER
1 22 23
Q325
I/F, VR CONTROL
MUTE DRIVER
Q301,302
14 15 16
MUTE DRIVER
Q310,313
69 70 68 44 27 28 29
2
1
C/D 10 56 LCD-C/D
CS 9 55 LCD-CS
SD 8 54
LCD-DATA
SCK 7 53 LCD-CLK
91
SIRCS
SYSTEM
SIRCS,KEY-IN
CONTROLLER
DETECT 93 P-WAKE
IC801 (2/2)
Q803,804
KEY1
82
1 83 ENA
3 84
ENB
LED DRIVER
72
READY-H
Q701
P-CONT 46
READY-H 62
LPF
POWER AMP
IC306
IC382
IN4
5 7 14
MUTE
Q306
LPF
22 MUTE
IC305
IN3
3 1 15
MUTE
Q303
LPF
IC307
IN4
5 7 14
BUFFER
Q308
LPF
22 MUTE
IC308
IN1
3 7 11
BUFFER
Q307
IN3
15
MUTE DRIVER POWER AMP
Q311,314 IC381
MUTE DRIVER
Q309,312
+3.3V
READY
3 2
REG
3.3V
IC805
AU
15V
AUDIO
15V
+5V
AU
B+ SWITCH
3 REG 1
5V
Q904,905
+5.6V SWITCHING
IC906
AUDIO
5V
L902
D-5.6V B+ SWITCH
(SW) Q907,908
5.6V
NON/SW
D-5V D946
(UNSW)
INITIAL
READY B+ SWITCH
POWER
D5V Q909,910
2
CONTROL
IC903
P-CONT
POWER-ON
READY-H EXCEPT US,CND,MX MODEL
SWITCH
Q902,906
US,CND,MX MODEL
US,CND,MX MODEL
13 13
HT-BE1/SA-WBE1/SS-BE1
J503
FL+
21
FL-
23
FR+
AU
R-CH
ST-BY 4
FR-
5V
RL+
17
RL-
19
AU
VCC RR+
15V R-CH
RR-
CE+
21
CE-
23
AU
4
ST-BY
5V
9
7
19
LEVEL DETECT
17
D421-426
AU
VCC
15V
FAN MOTOR +10V
AUDIO
1
CONTROL REG
15V
Q421,422 IC904
EXCEPT US,CND,MX MODEL
T902
RECT
SUB POWER
D941-944
+5V TRANSFOMER
~
3 REG 1
IC941
~
RELAY
DRIVER
Q941 RY901
US,CND,MX MODEL
T901
JW902
RECT
POWER
D902
TRANSFORMER
LF902 LF901
~
D911
~
REGULATOR
JW901
IC905
US,CND,MX MODEL
D909
SW
2 VIN 1
OUT
4 VOS D906 D907
REG
Q901,D903
D914
5
4
1 2
PC901
VOLTAGE DETECT
IC902
FRONT L
FRONT R
SPEAKER
REAR L
REAR R
CENTER
SP901
SPEAKER
FAN901
3 M DC FAN
MOTOR
~
AC IN
US,CND,MX MODEL
~
AC IN
F901
3 D
4 VCC
FB/OCP
1
SWITCHING
CONTROL
IC901