Block Diagram - Display/Power Supply Section - Sony STR-DB840 Service Manual

4-3. BLOCK DIAGRAM – DISPLAY/POWER SUPPLY Section –
+B
VOLUME
RV401
VOL CONT
–B
IC408 IC414
L
3 1
IN
3 OUT 2
DATA
9 DATA
CLK
8 CLK
LAT
10
LAT
VOL CONT
IC409
IC415 POWER AMP (C/W)
(1/2)
C
3 1
3 IN OUT 2
+B
IC409
(2/2)
–B
W
B
5 7
14 IN OUT 15
(Page 11)
DATA
9 DATA
CLK
8 CLK
LAT
10 LAT
VOL CONT
IC410
IC416
SL
3 1
3 2
IN OUT
DATA
9 DATA
CLK
DATA 8 CLK
LAT
CLK 10 LAT
LAT
+B
M M
–B
MUTE DRIVE
AC MUTE
Q501, 503
PROTECTOR
HP RY
C
SP/A RY
SP/B RY
(Page 11)
RY CENTER
RY WOOFER
REAR SP RY
PRE RY
RY POWER
STOP
RESET
URESET
USREQ
UMREQ
D UCLOCK
UDATA
(Page 11)
SOTO
SIN1
MD2
MD0
49 51 20 19
IC105
7 3 9 UP
MOTOR
DRIVE
8 2 10
DOWN
(US, Canadian)
95 96 93 94 18
J257
BUFFER
TV/SAT
Q201, 202
CTRL S
STATUS IN
FUNCTION
1
J258 6
13
IN1
S111 – 118
MONITOR
IN3 4
CTRL S
IN
J255
11
1 2 7
VIDEO 1
CTRL S
OUT
J256
10 2 OUT1 2
DVD/LD
CTRL S
CONTROL S
OUT
I/O
05 IC253
POWER AMP (L)
IC501
13 VCC
BOOSTER
+VE 12
14 VCC
Q506
15
VEE
Q505
9
8 IN NF
BIAS
POWER
1 PROTECTOR
MUT
BOOSTER CUR DET
Q509,510
–VE 11
Q507 Q508
IC601
13 VCC
BOOSTER
+VE 2
14 VCC
Q606
15
VEE
6 IN
Q604, Q605
NF 5
BIAS
POWER
PROTECTOR
1 BOOSTER CUR DET
MUT
Q609,610
–VE 3
Q607 Q608
POWER AMP (SL)
IC701
13 VCC
BOOSTER
+VE 12
14 VCC
Q706
15 VEE
Q704, Q705
8 9
IN NF
BIAS
POWER
1 PROTECTOR
MUT
BOOSTER CUR DET
Q709,710
–VE 11
Q707 Q708, Q798
PROTECTOR
Q547-549
D121,
D136 – 140, 141
D147 – 157
D111 – 115
RV101 RV102
1 – 7 9 – 15 20 – 29
LED DRIVER
IC108
61 62 60 59 58 79 78 75 76 1 2 3 4 5 88 87 89 90
DISPLAY
CONTROLLER
IC102 (1/2)
38 39 40 41 43 44 7
FUNCTION FUNCTION FUNCTION FUNCTION FUNCTION
KEY KEY KEY KEY KEY KEY
S121 – 128 S131 – 133, S151 – 153, S134, 135 S163, 164
141 – 145 161, 162
D123
MUTING
IC101
REMOTE
1 3 B+ (5V)
CONTROL
RECEIVER
R CH
RY602
RELAY
DRIVE
Q601
Q511
RY501
RELAY R CH
DRIVE
Q546
RY502
RELAY
DRIVE
Q596
RY601
Q611
RELAY
DRIVE
Q645
R-CH
RY681
RELAY
DRIVE
Q681
R-CH
RY701
RELAY
DRIVE
Q745
RY671
RELAY
DRIVE
Q671
(DB940) X11
IC106
SIRCS DET
7.82MHz
SIRCS
15 16
+B QQ11
Q129,130
IC11
CTL
2 CARR OUT CA1 I 11
LED
I/O
DRIVE 33 SIRCS IN CA1 O 12
LAT RESET
X101
5 14
16MHz
82 83 98 99 13
RESET
STOP
64 65 66 21 24 25 22 12 67 63
SPEAKERS
Q104
D103
30 31 32 28
S102 S101 I/O
BUFFER
I/1
(POWER) IC103
Q102
FL DRIVE
5V
+5V
F2 F1 CHECK
FL101
FLOURESCENT
INDICATOR TUBE
13 13
J701
PHONES
TM501
L
A
R
FRONT
L
B
R
SPEAKERS
TM701
C
CENTER
S (L)
REAR
S (R)
JJ102
IC404
CENTER
+5V
+5V
1 3
JJ101 REG
IC401
SUB WOOFER
+15V
+15V 3 1
REG
IC405
L
PRE OUT
REAR –5V
–5V 3 2
REG
R
–15V
–15V
3 2
L
REG
FRONT
Q801
IC402
R
+32V
+32V
REG
D801
+B
–B
SWITCH
Q613
+24V
IC1207
+15V
TUNER +5V 3 1
REG
IC1208
+5V
IR LINK +5V
3 1
REG
+3.3V
DIGITAL +5V 3 1
REG
IC1203
+5V
CONT µCOM ETC
3 1
REG
IC1204
DISP µCOM+5.6V +6.2V
3 1
D1209
REG
D1208
IC1205
RELAY
DRIVE
Q901
D1211
+6.2
REG
Q1205
RESET
77
Q103
D901-904
3
RESET
47 8 5
IC1206
6
J204: DB840
J2004: DB940
CONTROL A1 II
STR-DB840/DB940
• SIGNAL PATH
: FM
: CD
S801
IMPEDANCE
SELECTOR
4 8
T901
D812
D811
F801
F802
F803
D802-805
F804
D806-809
F805
F2
F1
RY901
EXCEPT US,
Canadian
F903
CNJ901
JW925
T902
(US, Canadian)
CNP901
AC IN