Sony STR-DH720 / STR-DH720HP Service Manual ▷ View online
STR-DH720/DH720HP
STR-DH720/DH720HP
21
21
1
A
B
C
D
E
F
G
H
I
J
K
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
MAIN BOARD (3/4)
18
17
25 26
20 21
22
24
23
19
36
35
37
39
38
-15
-7
15
7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
7
0
0
0
-7
0
0
0
0
0
0
0
0
0
0.7
I
O
G
I
O
COM
G
19
18
17
16
15
14
13
12
11
10
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
8
7
6
5
4
3
2
18
17
16
15
14
13
12
11
10
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
DATA
CLK
SW
C_SUR
PROTECTOR
HP_DET
BRIDGE
SBL_R
LR
SW
HP
1k
R451
1k
R402
1k
R452
C400
2200p
W002
CC01
100p
CC51
100p
CC02
100p
CC52
100p
CC08
100p
CC58
100p
CC03
100p
CC53
100p
CC05
100p
CC55
100p
1k
R401
1k
R453
1k
R403
A_GND
C405
2200p
C449
100p
C450
100p
J405
D352
1SR154-400TE-25
D351
P6SMBJ33A-5
C350
0.47
C352
0.47
RY301
2.2k
R301
100k
R467
47k
R304
47k
R470
C471
10
50V
1k
R466
1k
R455
1k
R405
1k
R408
C458
4.7
50V
C408
4.7
50V
1k
R458
0
R354
15k
R348
C547
10 50V
C546
10 50V
CL300
CL301
CL302
CL303
CL304
CL305
CL306
CL307
CL301
CL302
CL303
CL304
CL305
CL306
CL307
CL308
CL309
CL310
CL311
CL312
CL313
CL314
CL311
CL312
CL313
CL314
CL315
CL316
CL317
CL318
CL319
CL320
CL321
CL322
CL323
CL324
CL318
CL319
CL320
CL321
CL322
CL323
CL324
CL326
CL327
CL328
CL327
CL328
CL329
CL335
CL336
CL337
CL338
CL340
CL341
CL344
CL345
CL346
CL347
CL378
CL379
CL376
CL377
CL348
C489
2200p
C491
10p
C499
2200p
C490
10p
C488
0.1
CL325
CL392
CL382
CL381
CL333
C351
100
16V
C353
100
16V
220
R450
220
R449
1k
R357
C380
10 50V
C381
10 50V
C382
10 50V
C383
10 50V
C384
10 50V
C385
10 50V
C386
10 50V
C387
10 50V
1k
R380
1k
R381
1k
R382
1k
R383
1k
R384
1k
R385
1k
R386
1k
R387
220p
C388
C389
220p
1k
R388
1k
R389
C390
3300p
C399
100p
C398
100p
C391
3300p
C392
3300p
C393
3300p
C394
3300p
C395
3300p
C396
3300p
C397
3300p
D301
DA2J10100L
GND
HPFN
LPF01
LPF02
LPFN2
LPFN1
SWVOL
VCC
DGND
DA
TA
CLK
VEE
FROUT
FLOUT
SWOUT
COUT
SROUT
SLOUT
SBROUT
SBLOUT
GND
GND
GND
SUB2L
SUB2R
RECL3
RECR3
RECL2
RECR2
RECL1
RECR1
GND
SBL IN2
SBR IN2
SL IN2
SR IN2
C IN2
SW IN2
FL IN2
FR IN2
GND
INL12
INR12
INL1
1
INR1
1
INL10
INR10
INL9
INR9
INL8
INR8
INL7
INR7
INL6
INR6
INL5
INR5
INL4
INR4
INL3
INR3
INL2
INR2
INL1
INR1
GND
SBLIN
SBRIN
SLIN
SRIN
CIN
SWIN
FLIN
FRIN
GND
ADC ROUT
ADC LOUT
GND
SUB1 R
SUB1 L
GND
J409
2
3
1
5
4
7
6
J401
R302
100
C401
10p
C402
10p
CNP411
19P
+7V
NC
-7V
ADCL OUT
AGND
AGND
AGND
ADCR OUT
DAC FR IN
DAC FL IN
DAC SW
DAC C
DAC SR IN
DAC SL IN
DAC SBR IN
DAC SBL IN
DCAC
TUNER_R
TUNER_L
1
TUNER_L
CNP410
19P
NC
19
+3.3V
DGND
REG_TEMP
HP_RY
PREOUT_SW_ RY
FL-FR_RY
SBL-R_RY
BRIDGEABLE_RY
C-SLR-RY
PROTECTOR
LIMITER
HP_DET
HP_DET
+15V_TUNER
EVOL_DATA
EVOL_CLK
VIDEO2_R
AGND
VIDEO2_L
2
4
5
1
3
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20
59
57 56
60
58
55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
BD3470KS2
IC400
DIR FUNCTION SELECT
IC400
IC352
KIA7907PI
-7V REG
IC350
KIA7807API-U/PF
IC352
+7V REG
IC350
Q301
RELAY DRIVER
2SC3052EF-T1-LEF
L
R
SA-CD/CD
AUDIO IN
L
R
L
R
SAT/CATV
AUDIO IN
L
R
VIDEO 1
AUDIO OUT
L
R
VIDEO 1
AUDIO IN
SUBWOOFER
AUDIO OUT
TV
AUDIO IN
F
DIGITAL
BOARD
(4/4)
CN2105
(Page 11)
G
DIGITAL
BOARD
(4/4)
CN2114
(Page 11)
9
MAIN BOARD
(4/4)
(Page 22)
4
MAIN BOARD (1/4)
(Page 19)
5
MAIN BOARD (1/4)
(Page 19)
6
MAIN BOARD (2/4)
(Page 20)
8
MAIN BOARD
(4/4)
(Page 22)
(ECE)
C323
10p
C324
10p
2-18. SCHEMATIC DIAGRAM – MAIN Board (3/4) –
STR-DH720/DH720HP
STR-DH720/DH720HP
22
22
2-19. SCHEMATIC DIAGRAM – MAIN Board (4/4) –
1
A
B
C
D
E
F
G
H
I
J
K
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
MAIN BOARD (4/4)
27
28 29
32
31
33
34
30
36
35
37
39
38
1
2
3
4
5
SBL
SBR
SBL_R
SL_OUT
SR_OUT
C_SUR
C_OUT
LR
BRIDGE
FR_OUT
FL_OUT
C
SR
SL
FL
FR
RY920
1
2
3
5
6
8
4
4
7
2.2k
R921
Q920
RELAY DRIVER
2SC3052EF-T1-LEF
CNP920
5P
R1 (UPPER TAP)
R1 (LOWER TAP)
R1 GND
R1 (LOWER TAP)
R1 (UPPER TAP)
W001
Q360
RELAY DRIVER
2SC3052EF-T1-LEF
Q355
RELAY DRIVER
2SC3052EF-T1-LEF
Q365
RELAY DRIVER
2SC3052EF-T1-LEF
1k
R355
RR13
10
CC13
0.01
RR14
10
CC14
0.01
RR11
10
CC11
0.01
CC12
0.01
RR12
10
CC15
0.01
RR15
10
RR17
10
CC17
0.01
47k
R358
47k
R363
47k
R925
C911
0.1
C910
1SR154-400TE-25
D910 ~ D913
D912
D911
D910
D913
0.1
CL369
CL370
CL371
CL373
CL372
CL370
CL371
CL373
CL372
CL393
2.2k
R350
47k
R353
Q350
RELAY DRIVER
2SC3052EF-T1-LEF
F912
T6.3A 250V
F913
T6.3A 250V
47k
R366
1k
R367
RR18
10
CC18
0.01
CL356
CL357
CL358
CL359
CL360
CL361
CL355
JWH603
75
C912
2200
25V
C913
1000
25V
D921
D5SBA60-F
CL374
CL375
C932
0.1
C933
0.1
2.2k
R360
TB503
1
2
3
4
5
6
TB502
1
2
3
4
D350
DA2J10100L
D365
DA2J10100L
D355
DA2J10100L
D360
DA2J10100L
D920
DA2J10100L
2
3
4
5
3
4
5
CL366
CL367
CL368
F910
T2.5A 250V
F911
T2.5A 250V
CNP930
5P
NC
1
R2 AC
CENTER TAP
NC
R2 AC
NC
R2 AC
C930
6800
71V
C931
6800
71V
R351
33
R365
33
R356
33
R361
33
R920
33
TB504
1
2
3 4
5
RY360
12V
1
2
3
4
5
6
RY355
12V
1
2
3
4
5
6
RY365
12V
1
2
3
4
5
6
RY350
12V
1
2
3
4
5
6
SBR_OUT
SBL_OUT
+
+
-
-
+
-
-
+
+
-
SURROUND
R
L
FRONT
CENTER
L
R
-
+
+
-
SURROUND BACK/
FRONT HIGH
L
R
SPEAKERS
I
POWER
TRANSFORMER
(MAIN)
T901
(Page 24)
J
POWER
TRANSFORMER
(MAIN)
T901
(Page 24)
9
MAIN BOARD
(3/4)
(Page 21)
7
MAIN BOARD (2/4)
(Page 20)
8
MAIN BOARD
(3/4)
(Page 21)
(ECE)
STR-DH720/DH720HP
STR-DH720/DH720HP
23
23
2-20. PRINTED WIRING BOARD – STANDBY-AVIDEO MT PC Board –
•
: Uses unleaded solder.
1
A
B
C
D
E
F
G
H
I
J
K
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
B
E
E
B
B
E
B
E
JR
IC201
IO
IC202
1
24
13
12
IC210
IC220
IC203
HS200
R
Y901
FH901
13
CNP901
B901
T902
IO
FH902
14
CNP902
B902
C203
C904
C204
J210
J211
C21
1
C213
J220
C224
C225
C226
C227
C228
C229
F940
F941
D941
C953
C992
C212
C998
JW204
JW200
JW201
JW205
JW206
JW202
JW203
JW212
JW213
JW219
JW218
JW217
JW222
JW223
JW224
JW225
JW226
JW242
PL200
JW228
JW229
JW230
JW221
JW208
JW214
JW215
JW21
1
JW231
JW241
JW232
JW220
JW233
JW207
JW234
JW216
JW209
JW210
JW235
R902
JW227
CN904
1
4
CN906
F901
1
9
3
CN272
JW236
JW240
JW237
JW238
JW239
C214
C216
14
1
CN271
7
1
Q201
Q901
Q990
Q202
D990
D204
D202
D901
D203
D993
D994
R230
R224
R225
R253
R254
R226
CL226
CL224
CL227
R200
R202
R201
R203
C205
CL216
CL214
CL215
CL213
CL217
CL219
CL220
CL222
CL221
CL223
CL218
R256
R227
CL228
R258
R228
CL230 CL229
R229
R260
R262
R264
R266
CL232
CL231
CL233
C235
C232
C233
R278
R277
R276
JR200
R21
1
C208
R213
CL210
R904
R990
R993
R991
R903
R235
R234
R236
R232
R233
CL903
C215
C944
R214
C219
CL907
C218
C943
CL904
R215
C950
C202
C201
CL902
CL905
C940
C217
C210
CL906
C941
C951
CL225
CL252
CL901
CL245
CL242
CL247
CL246
CL212
CL211
CL249
CL248
CL243
CL238
CL236
CL235
CL237
CL234
C207
R204
R205
C238
C236
C237
C239
C241
C240
R217
R218
C243
C244
C245
C242
R212
R216
R222
R207
STANDBY-
AVIDEO
MT PC BOARD
AVIDEO
MT PC BOARD
1-883-401-
24
(24)
P
R
P
B
Y
P
R
P
B
Y
P
R
P
B
Y
SAT/CATV
(IN 2)
BD/DVD
(IN 1)
MONITOR
OUT
ASSIGNABLE
(INPUT ONLY)
COMPONENT VIDEO
VIDEO 1
VIDEO IN
VIDEO 1
VIDEO OUT
SAT/CATV
VIDEO IN
MONITOR
VIDEO OUT
(CHASSIS)
(CHASSIS)
(CHASSIS)
POWER
TRANSFORMER
(SUB)
~ AC IN
(CHASSIS)
(CHASSIS)
NOT REPLACEABLE:
BUILT IN TRANSFORMER.
H
MAIN
BOARD
CNP920
(Page 18)
I
MAIN
BOARD
CNP930
(Page 18)
A
DIGITAL
BOARD
CN2103
CN2103
(Page 6)
L
D-VIDEO
BOARD
CN3200
CN3200
(Page 12)
N
DCDC
BOARD
CN1500
CN1500
(Page 4)
T901
POWER
TRANSFORMER
(MAIN)
EXCEPT
US, CND
US, CND
STR-DH720/DH720HP
STR-DH720/DH720HP
24
24
2-21. SCHEMATIC DIAGRAM – STANDBY-AVIDEO MT PC Board –
1
A
B
C
D
E
F
G
H
I
J
K
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
STANDBY-AVIDEO MT PC BOARD
POWER
TRANSFORMER
(MAIN)
T901
5
13
-5
-13
0
5
0
0
0
-5
-5
0
5
0
0
3.3
0
0
0
5
0
5
0
0
0
0
0
0
5
-5
0
0
0
0.6
0
2.8
0
3.3
-0.7
0
3.3
0
0.7
50V
1
C992
FH901
FH902
RY901
5V, TV-8
1
4
4
4P
CNP902
LIVE
NEUTRAL
NEUTRAL
F901
2SC3052EF-T1-LEF
Q990
AC OFF DETECT
10k
R993
2SC3052EF-T1-LEF
Q901
RELAY DRIVER
2.2k
R903
47k
R904
75
R227
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
VOUT1
SW5
VIN5
SW3
VIN4
SW4
VIN3
V-
VI
N
2
SW2
VOUT3
GND
VIN1
SW1
VOUT2
V+
75
R213
75
R215
75
R225
G
1
2
3
6
7
4
5
8
9
10
11
12 13
75
R224
G
1
2
3
4
5
75
R21
1
75
R214
50V
10
C224
50V
10
C225
50V
10
C226
50V
10
C227
50V
10
C228
50V
10
C229
50V
10
C213
75
R228
50V
10
C211
75
R226
75
R229
75
R278
75
R277
75
R276
24
23
22
21
20
19
18
7
6
5
17
16
15
14
13
8
3
2
1
4
9
10
11
12
CH1 IN1
SW1
CH1 IN2
SW2
CH1 IN3
GND
V+1
CH2 IN1
GND
CH2 IN2
GND
CH2 IN3
CH3 IN3
GND
CH3 IN2
V-
1
CH3 IN1
V-
2
GND
CH3 OUT
V+2
CH2 OUT
PS
CH1 OUT
16V
C953
3300
CL904
CL905
CL905
CL906
CL907
I
O
G
I
O
G
47p
C210
47p
C208
MC2838-T112-1
D990
CL902
CL901
R266
0
R264
0
R262
0
R260
0
R258
0
R256
0
R254
0
R253
0
R230
0
CL211
CL212
CL213
CL213
CL214
CL215
CL216
CL217
CL218
CL219
CL220
CL221
CL222
CL215
CL216
CL217
CL218
CL219
CL220
CL221
CL222
CL223
CL247
CL246
CL245
CL242
CL224
CL226
CL227
CL228
CL229
CL230
CL231
CL232
CL233
MC2840-T112-1
D993
MC2840-T112-1
D994
25V
3300
C904
D5SBA60-F
D941
1
3
4
8
6
1
3
3
3P
CNP901
LIVE
NEUTRAL
NEUTRAL
6.8k
R991
15k
R990
F940
T3.15A 250V
CL903
F941
T3.15A 250V
25V
1000
C998
ISA1602AM1-T111-1F
Q201
2SC3052EF-T1-LEF
Q202
1
C219
1k
R234
100
R207
27k
R232
10k
R233
100
R235
R200
10k
G
1
2
3
4
5
DA2J10100L
D202
DA2J10100L
D901
47k
R202
47k
R203
R201
1SR154-400TE-25
D203
MC2838-T112-1
D204
0.1
C205
0.1
C215
0.1
C217
4.7
C218
0.1
C232
0.1
C233
0.1
C235
0.1
C943
0.1
C950
0.1
C951
R212
220
75
R216
75
R217
75
R218
R902
33
C201
0.1
C202
0.1
C944
0.1
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CN271
14P
COMP_SW2
NC
V_MUTE_1
VSEL_1
VSEL_2
VIDEO2
VIDEO2_VGND
COMP_DET
STOP
POWER_RY
+5V_STBY
+3.3V STBY
VERSION
MODEL
CL248
CL249
CL210
7
6
5
4
3
2
1
CN904
7P
+13V
NC
+13V
R3_GND
R3_GND
+4V_DCDC
+4V_DCDC
0.047
C940
0.047
C941
1
2
3
4
2
3
4
4P
CN906
R3 AC (Yellow)
NC
CENTER
R3 AC (Green)
NC
CENTER
R3 AC (Green)
0.1
C207
IC203
NJM2505AF (TE2)
1
V-
O
U
T
2
GND
3
+V
4
V-
IN
5
VGND
10 50V
C216
10 50V
C214
10V
100
C212
R222
2.2k
47
35V
C204
47
35V
C203
100
R205
100
R204
C236
22p
C237
22p
C238
22p
C239
22p
C240
22p
C241
22p
1
3
4
5
6
7
8
9
3
4
5
6
7
8
9
CN272
9P
CVBS IN
GND
CY IN
GND
CB IN
GND
CR IN
GND
CL234
CL237
CL238
CL236
CL235
C245
100
C242
68
C243
68
C244
68
8.2k
R236
POWER
TRANSFORMER
(SUB)
T902
~ AC IN
J
MAIN
BOARD
(4/4)
CNP920
(Page 22)
I
MAIN
BOARD
(4/4)
CNP930
(Page 22)
N
DCDC
BOARD
CN1500
CN1500
(Page 5)
IC201
KIA7805API-U/PF
IC202
KIA7905PI
+5V REG
IC201
VIDEO AMP
IC203
-5V REG
IC202
CH1 = Y
CH2 = Pb
CH3 = Pr
NJM2586AM
IC220
COMPONENT
VIDEO SELECT
IC220
IC210
NJM2595M-TE2
INPUT SELECT
IC210
VIDEO DETECT
VIDEO DETECT
D
DIGITAL
BOARD
(2/4)
CN2103
(Page 9)
L
D-VIDEO
BOARD
(2/4)
CN3200
(Page 15)
J220
J211
SAT/CATV
(IN 2)
BD/DVD
(IN 1)
COMPONENT VIDEO
ASSIGNABLE (INPUT ONLY)
VIDEO 1
VIDEO OUT
VIDEO 1
VIDEO IN
J210
SAT/CATV
VIDEO IN
MONITOR
VIDEO OUT
MONITOR
OUT
Y
P
B
P
R
Y
P
B
P
R
Y
P
B
P
R
*1
F901
T3.15AL
250V
(ECE)
8A,
125V
(US, CND)
*1
*
R201
2.2k
(ECE)
0
(US, CND)
*
(ECE)
(CHASSIS)
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