Sony STR-DH550 / STR-DH750 Service Manual ▷ View online
STR-DH550/DH750
STR-DH550/DH750
21
21
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
and
1
/
4
W or less unless otherwise
specifi ed.
• f : internal component.
• 2 : nonfl ammable resistor.
• 5 : fusible resistor.
• C : panel designation.
• 2 : nonfl ammable resistor.
• 5 : fusible resistor.
• C : panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
• A : B+ Line.
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
• Voltages are taken with VOM (Input impedance 10 M
• Voltages are taken with VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F :
F :
AUDIO
f :
TUNER
L :
USB
E :
VIDEO
J :
AUDIO
(DIGITAL)
N :
MIC
• Abbreviation
AUS :
AUS :
Australian
model
BR :
Brazillian
model
CND :
Canadian
model
E12
: 220 – 240V AC area in E model
MX :
Mexican
model
TW :
Taiwan
model
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• f : internal component.
•
• X : Parts extracted from the component side.
• f : internal component.
•
: Pattern from the side which enables seeing.
Note:
The components identi-
fi
The components identi-
fi
ed by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specifi ed.
cal for safety.
Replace only with part
number specifi ed.
Note:
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une piéce portant le nu-
méro spécifi é.
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une piéce portant le nu-
méro spécifi é.
• Abbreviation
AUS :
AUS :
Australian
model
BR :
Brazillian
model
CND :
Canadian
model
E12
: 220 – 240V AC area in E model
MX :
Mexican
model
TW :
Taiwan
model
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
• Waveforms
– HDMI Board –
3.0 Vp-p
4.0 MHz
2
IC2001 rl (X1)
500 mV/DIV, 100 ns/DIV
2.8 Vp-p
4.0 MHz
8
IC2602 rk (PE2/X0)
500 mV/DIV, 100 ns/DIV
1.0 Vp-p
16.9 MHz
9
IC2900 qg
(XOUT_PLL)
200 mV/DIV, 25 ns/DIV
2.2 Vp-p
320 ns
7
IC2400 rs (BCLK_IN)
500 mV/DIV, 100 ns/DIV
1.5 Vp-p
24.5 MHz
6
IC2203 ea (XOUT)
500 mV/DIV, 10 ns/DIV
3
IC2203 3 (MCKIN)
100 mV/DIV, 25 ns/DIV
60 ns
544 mVp-p
4
IC2203 4 (BCKIN)
10 mV/DIV, 50 ns/DIV
60 ns
13.2 mVp-p
5
IC2203 qf (BCKOUT)
1 V/DIV, 100 ns/DIV
3.06 MHz
3.84 Vp-p
104 mVp-p
27.0 MHz
1
IC3514 <zzv (XTALIN)
50 mV/DIV, 10 ns/DIV
– MAIN Board –
Ver. 1.1
STR-DH550/DH750
STR-DH550/DH750
22
22
5-7. PRINTED WIRING BOARD – MAIN Board (Component Side) –
• See page 14 for Circuit Boards Location. •
: 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
R2090
R018
D365
Q850
Q851
Q852
E
Q853
E
RB2000
R600
RB2001
R601
RB2002
RB2003
R603
R604
L650
RB2005
R605
RB2006
R606
RB2007
RB2008
R608
RB2009
R800
D570
K
A
R801
D571
A
K
A
K
D572
R803
RB2010
R804
R610
L850
Q670
RB201
1
R805
R611
RB2012
R806
R612
Q672
RB2013
R613
R420
RB2014
R808
Q674
R421
RB2015
Q675
R422
R616
R423
R617
D770
D771
D772
R810
Q870
R811
R812
Q872
E
R813
R620
Q874
LP401
R621
Q875
R816
Q802
R622
R817
R623
C200
W2200
R624
C201
R625
C202
R626
C203
R627
C204
R628
R629
C012
C013
R820
C014
R821
C015
R822
C016
R823
C017
RB2800
R824
C018
R631
R825
RB2802
R826
RB2803
R827
C210
R828
C211
R829
JL2900
JL2901
R251
JL2902
R252
JL2903
JL2904
R831
JL2905
X2001
JL2906
JL2907
JL2907
C603
J2200
X2200
C2302
C803
C2303
JC2670
C610
C2306
C612
C613
C2308
C808
R650
R651
R653
X2400
C618
R654
R655
R656
FB2000
C2310
C810
R658
C231
1
C2312
C812
C2313
C813
FB2004
C2314
C620
R850
C2315
R851
C2316
C2317
R853
C430
C2318
X2600
R854
R660
C2319
C431
R855
R661
C432
R856
R662
C433
R663
C434
R2100
FB2200
R470
R858
FB2201
R471
FB2202
R472
R666
FB2203
R473
R667
C2320
FB2204
C820
FB201
1
C2321
C2322
FB2206
C2323
C2900
R860
C2901
C631
R861
C2902
C632
R862
D2302
A
K
C2903
R863
D2303
R2300
FB2400
C2904
R670
D2304
K
A
A
K
A
A
C2905
C441
R2301
C635
R671
R2302
FB2402
C636
R866
R672
R2303
R867
R673
R2304
C2908
C250
R674
R2305
C2909
R675
R2306
R676
R677
IC2300
R678
R2309
15
28
11
4
29
IC2301
C831
TH251
R679
C832
TH252
FB2600
C2910
R870
C291
1
FB2601
C835
R871
C2912
FB2602
C836
R872
C2913
R873
C2914
R874
R681
C2915
R875
C2916
R876
C2917
R877
F910
R878
C2919
F911
R879
F912
F913
Q301
E
C2920
C2921
R881
C2922
C653
D2900
D2901
D2902
R2900
C658
R2901
R2902
R2904 R2906
C853
1
40
21
20
10
11
31
30
41
IC2900
R2908
C660
IC2901
IC2902
C662
C663
Q700
C858
Q701
Q702
E
Q703
E
IC200
R2910
R2911
R2912
R2912
R2913
R2914
Q320
C860
A921
C862
Q323
C863
R2918
C670
R2919
Q325
E
C480
C481
IC402
C482
C483
C484
C2918 R2915
R2916
R2920
L700
R2921
R2922
R2923
C487
R2924
C870
R2925
R2926
R2927
D620
K
A
K
A
K
A
K
A
K
A
R2929
D621
C681
D622
C682
Q720
C491
C685
Q722
C686
Q724
Q725
R2932
D820
D821
C881
D822
C882
C885
C886
J200
Q929
E
Q550
Q551
B
C
E
B
C
E
B
C
E
B
C
E
B
C
E
B
C
E
B
C
E
B
C
E
B
C
E
B
C
E
B
C
E
B
C
E
B
C
E
B
C
E
Q552
E
Q553
E
R301
R302
R304
Q750
Q751
Q752
E
Q753
E
L550
R700
R701
R703
R704
L750
Q570
R705
R706
Q572
E
E
E
E
E
E
R708
Q574
Q575
R323
D670
R325
D671
D672
R327
R710
R328
Q770
R711
R712
Q772
E
E
E
E
E
E
R713
Q774
JL2401
Q775
JL2402
R716
JL2403
R717
JL2404
D870
D871
JL2406
D872
JL2407
JL2600
R720
R721
R722
R723
2
12
3
22
CN2000
R724
JL2601
JL2602
JL2603
JL2604
JL2605
R531
R725
C301
JL2606
R726
JL2607
2
1
9
8
CN2003
R727
2
1
29
28
CN2004
R728
10
1
3
CN2005
R729
R920
R731
R926
C503
R927
Q2000
R928
Q2001
E
Q2002
E
R542
Q2003
R543
C2008
R544
R351
R547
C2200
R548
R549
C2202
R356
C703
C2203
Q2200
E
C2204
C2205
C2012
C2206
C2207
C2208
C708
C320
R550
R551
C2016
C323
R553
JL2628
1
2
13
14
CN2600
R554
C2401
JL2629
1
7
CN2601
C325
R555
R361
C2402
R556
C2403
C2210
C710
R558
C2405
R365
C2406
C712
C2213
C2407
C713
JL2630
C2408
C2214
R750
C2215
JL2631
R751
R753
C2024
JL2634
R754
R560
JL2635
C2025
C2219
R755
R561
C2026
C2602
R756
R562
C2027
D2003
R563
C2604
R2000
R758
R2001
C2029
C2605
Q2601
E
E
C2606
R2002
Q2602
C912
R566
C2607
R2003
C913
R567
Q2604
R2004
C2220
C720
R2005
C2221
C2415
C2609
R2006
C2222
R2007
C2223
IC2000
R2008
C2224
D2200
K
A
R760
1
25
51
75
50
26
76
100
IC2001
C2225
C2419
D2201
K
A
R761
C2226
R762
C2227
C2033
R763
C2034
C2610
R2200
C2228
FB2300
R570
FB2301
D201
1
C2229
C2611
R2201
R571
RY301
C2612
D2012
R2202
R766
R572
R2203
C2613
FB2303
R767
R573
R2010
IC2008
C2614
R2204
R574
C2039
R2205
IC2009
R575
R381
R2206
R2012
R576
R382
R2013
R577
R383
R2014
C2618
X2900
C2424
2
1
3
IC2200
R578
R384
2
1
3
IC2201
R2209
R2015
C731
R579
R385
IC2202
C2426
R2016
C732
R386
16
17
1
32
33
48
49
64
IC2203
C2427
R2017
R387
C2040
C2428
R2018
IC2204
R770
R2019
C2041
R2401
IC2205
C735
R771
R2402
C2042
C736
R772
R2403
C2043
R773
C2044
C2620
R2404
R774
R581
R2405
R221
1
C545
C351
R775
R2406
R2212
C546
R776
R2213
C2623
C547
C353
R777
D2600
C2430
C2624
R2214
101
50
51
76
75
100
1
26
25
101
IC2400
C930
C548
15
CN950
R778
D2601
IC2401
R2215
JL2412
R2408
R2409
R2409
C2431
C2625
C931
15
CN951
R779
IC2402
C2432
R2216
D2602
R2217
C2627
R2218
Q200
E
D2603
D2604
C2628
Q201
R2025
R2219
R2601
C2435
R2026
C2437
R2603
C2438
R2410
R2671
R2672
R2931
R2604
R2605
C2439
R781
R2606
R2607
C553
R2220
R2415
R2609
C2631
R2221
IC2601
D301
AK
1
25
51
75
50
26
76
100
IC2602
R2222
R2417
R2223
IC2603
R2418
FB2900
C2440
R2224
C558
C2635
FB2901
C2441
R2419
R2225
R2226
JL2408
JL2409
JL2410
JL2411
R2400 R2407 C2442
R2228
R2610
C2444
R261
1
C2445
R2612
C753
C2038
R2021
R2022
R2037
R2613
R2614
R2420
C560
R2615
R2421
R2616
R2617
R2423
C563
R2230
Q600
C758
C564
R2425
R2619
R2231
Q601
R2227
R2229
R2232
Q602
E
R2233
Q603
E
R2234
C2068
C2450
R2040
R2041
R2235
R2422
R2424
R2426
R2429
C2069
C2451
ET301
R2236
C2452
R2237
R2043
C2453
R2620
C2454
C760
R2239
R2621 R2622
C762
R2623
C763
R2430
R2624
Q800
C570
R2431
Q801
R2432
E
Q803
E
R2437
C2078
L600
RY920
D326
D327
K
K
A
K
A
A
A
A
R2630
C770
R2632 R2633
R2634
R2058
C581
C241
1
C2417
R2412
R2416
R2441
R2442
C582
R2443
R2444
L800
Q620
A
A
K
K
A
K
A
K
A
K
A
K
A
K
A
K
A
K
A
K
RY350
C2433
C2434
R2438
R2439 R2440
R2445
R2639
C585
Q622
E
C586
JL2405
C2425
C2429
R2434
R2447
C2088
R2448
D910
Q624
E
E
R2061
R2449
D91
1
AK
AK
A
K
A
K
K
K
A
K
A
K
A
A
Q625
RY355
D912
R2063
D913
R2640
R2064
D720
W001
D721
C781
R2642
R2066
W002
D722
K
A
C782
W003
R2450
R2068
R2644
Q820
R2645
R2451
C785
R2646
R2452
Q822
C786
R2435
R2436
R2454
Q824
E
E
E
E
E
RY360
R2455
Q825
R2456
D536
R2457
R2458
D920
D921
RY365
FB200
R2653
C987
C988
R2651 R2652 R2654
R2655
R2656
R2657
JL2632
JL2633
R2658
D350
R2659
D352
AK
R2080
R2081
D355
D356
K
A
R2083
R2660
R201
R2661
R2086
D937
K
A
R2664
R2665
R2666
R012
R2667
R013
C2634
R2668
Q650
D360
A
K
RY380
R014
R2669
Q651
R015
Q652
E
R016
Q653
E
R017
Q2600
FB2403
FB2401
14
CN391
R2238
R2934
1
5
CN2900
Q321
Q324
R2414
E
E
E
E
E
E
J402
TB501
TB502
TB503
J401
MAIN BOARD
(COMPONENT SIDE)
1-889-543-
21
(21)
X2001, X2600
+
–
+
–
+
–
+
–
+
–
+
–
+
–
(CHASSIS)
(CHASSIS)
(CHASSIS)
(CHASSIS)
L
FRONT A
CENTER
R
L
SURROUND
SPEAKERS
63($.(56,03('$1&(86(
R
L
SURROUND BACK/ BI-AMP/
FRONT HIGH/ FRONT B
R
L
R
AUDIO
TV IN
AUDIO
SUBWOOFER
OUT
AUDIO
TV IN
AUDIO
SUBWOOFER
OUT
(CHASSIS)
(CHASSIS)
(CHASSIS)
AUDIO
SA-CD/
CD IN
AUDIO
SAT/
CATV IN
AUDIO
VIDEO IN
AUDIO
SA-CD/
CD IN
AUDIO
SAT/
CATV IN
AUDIO
VIDEO IN
L
R
VIDEO
MONITOR
OUT
VIDEO
VIDEO IN
VIDEO
SAT/
CATV IN
OPTICAL
COAXIAL
SA-CD/CD
(ASSIGNABLE) IN
IN 2
(TV ASSIGNABLE)
IN 1
(SAT/CATV
ASSIGNABLE)
PROGRAMMING JIG
(HDMI KSV)
2
1
9
8
CN2003
1
5
CN2900
2
1
9
8
CN2003
1
5
CN2900
1
2
13
14
CN2600
10
1
3
CN2005
POWER
TRANSFORMER
(MAIN)
T901
(Page 34)
>001P
POWER
TRANSFORMER
(MAIN)
T901
(Page 34)
>002P
HEADPHONE
BOARD
CN107
(Page 42)
>003P
TUNER1
BOARD
CN101
(Page 39)
>004P
FRONT JACK
BOARD
CN104
(Page 39)
>005P
DISPLAY
BOARD
CN102
(Page 37)
>006P
STANDBY DCDC
BOARD
CN1901
(Page 34)
>007P
HDMI BOARD
CN3514
(Page 22)
>008P
(CHASSIS)
BT
MODULE
Ú
DH550
¾
DH750
¾
¾
¾
¾
Ú
¾
¾
¾
¾
¾
¾
¾
Note: IC2402 and IC2900 on the MAIN board cannot exchange
with single. When these parts on the MAIN board are
damaged, exchange the entire mounted board.
damaged, exchange the entire mounted board.
Ver. 1.2
STR-DH550/DH750
STR-DH550/DH750
23
23
5-8. PRINTED WIRING BOARD – MAIN Board (Conductor Side) –
• See page 14 for Circuit Boards Location. •
: 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
R869
Q654
E
R401
Q655
E
R2093
R403
R2670
R2094
D750
K
A
K
A
D751
R2673
R407
2
1
3
IC350
Q854
Q855
E
E
R602
1
2
3
IC352
R607
R609
R802
R807
R614
R809
R615
CL2900
R618
CL2901
R619
C001
CL2902
C002
CL2903
C003
CL2904
C007
R814
R815
R818
R819
C205
C206
C207
C208
C601
R449
C604
C605
R450
R451
R453
C801
R457
C804
C805
C2307
C2309
R652
R657
R659
FB2003
CL700
CL701
CL702
R852
R857
C628
R664
R859
R665
R668
FB2205
R669
C051
C052
C053
C2327
C057
C828
R864
R865
C2906
C2907
FB2404
R868
R2307
R2308
C449
C062
CL337
C063
CL338
C064
CL339
C641
C065
C642
C066
C067
R2310
C450
C068
CL340
CL341
C841
C842
C651
C654
C655
CL931
C851
CL355
CL932
CL356
CL933
R2907
CL357
D600
C854
CL358
C855
D601
K
A
K
A
CL359
CL550
CL551
CL552
Q704
CL360
Q705
E
E
CL361
CL362
CL363
D800
K
A
CL364
D801
K
A
CL365
CL366
CL367
CL750
CL368
CL751
CL369
CL752
IC400
CL370
C678
CL371
CL372
CL373
CL374
CL375
C489
CL378
CL379
C878
CL380
CL381
CL382
R2933
CL383
CL384
C499
CL385
CL386
CL387
Q920
C691
CL389
C692
CL390
CL391
CL392
Q350
E
E
C891
C892
CL2001
Q355
E
CL2002
CL2003
CL2004
CL2005
CL2006
CL2007
CL2008
CL2009
CL2200
Q554
Q360
E
CL2201
Q555
E
E
CL2202
CL2010
D650
K
A
K
A
CL2011
D651
Q365
E
CL2012
CL2013
R307
CL2014
R308
CL2015
R309
CL2016
CL2017
CL2018
Q754
E
CL2019
Q755
E
D850
CL2405
D851
K
A
K
A
CL2406
CL2407
JL2000
CL2020
CL2408
JL2001
CL2021
CL2409
CL2022 CL2023
CL2024
CL2600
CL2601
CL2025
CL2602
CL2026
R702
CL2603
CL2028
CL2604
CL2410
CL2605
CL2411
CL2029
CL2412
CL2606
CL2413
CL2607
R707
CL2414
CL2608
R320
CL2415
CL2609
R709
CL2416
CL2417
CL2418
CL2030
CL2419
CL2031
CL2032
R326
CL2610
CL261
1
CL2036
CL2037
CL2038
R714
CL2039
R715
R718
R719
CL2040
CL2041
CL2042
CL2043
CL2620
CL2044
CL2621
CL2045
CL2046
CL2622
CL2623
JL2027
CL2624
CL2625
CL2626
CL2627
CL2628
CL2050
CL2051
R921
CL2052
CL2053
CL2054
CL2055
R925
CL2056
CL2057
CL2058
CL2059
C505
CL200
R350
CL201
C2009
CL202
CL203
R353
CL204
CL2060
CL2061
CL205
C701
R355
CL2062
CL2063
CL2064
C704
R358
C201
1
CL2065
C705
R935
CL2066
R936
CL2067
R937
CL2068
R938
CL2069
C2209
R939
R552
C322
C2400
R360
R557
R363
C2404
CL2070
R940
CL2071
R559
CL2072
R366
CL2073
R367
CL2074
CL600
CL2075
C2409
CL601
CL2076
CL602
R752
CL2077
R757
C2410
C910
R564
C91
1
R759
R565
C2412
C2413
C2414
CL800
R568
CL801
R569
C2416
CL802
C2418
R2009
C728
R764
R765
FB2302
C2037
C2420
R768
C2615
R2011
C2421
R769
C2616
C2422
C2423
C2617
C2619
R2210
CL430
C350
C2621
C2045
CL431
C2046
C2622
C352
CL432
C2047
CL433
CL434
1
13
14
40
39
52
26
27
C354
CL435
C355
CL437
C934
CL438
C935
C741
CL439
C2436
C742
R241
1
C551
R2413
C554
CL440
CL441
C555
CL442
CL443
CL444
R2031
CL445
R2032
CL446
C2443
CL447
CL448
CL449
C751
C2448
C754
C755
CL450
CL451
C2065
CL452
C2066
CL453
C2067
R2427
CL454
Q604
E
Q605
E
R2042
D700
K
A
K
A
D701
R2046
CL650
R2625
CL651
R2626
CL652
C2073
Q804
R2629
Q805
E
E
R2050
C578
CL850
R2631
CL851
CL852
CL855
R2636
CL856
R2637
CL857
R2638
C778
CL858
CL859
R2446
CL860
CL861
CL862
C591
C592
R2647
C984
R2075
C791
R2076
C792
R2077
R2079
R2084
R2085
R203
R204
D550
A
A
K
K
R205
D551
C2218
C2329
C2331
¾
MAIN BOARD
(CONDUCTOR SIDE)
1-889-543-
21
(21)
¾
DH750
¾
¾
¾
¾
Ver. 1.2
STR-DH550/DH750
STR-DH550/DH750
24
24
5-9. SCHEMATIC DIAGRAM – MAIN Board (1/7) –
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 (1/7)
1
2
3
4
5
6
7
8
9
10
10
11
12
13
14
15
16
17
19
20
18
21
22
23
24 25
0
1.1
-0.7
0
0
58
1.1
0
58
1.1
0
58
1.1
0
58
1.1
0
58
1.1
0
58
-1.1
0
-58
-1.1
0
-58
-1.1
0
-58
-1.1
0
-58
-1.1
0
-58
-1.1
0
-58
1.1
0
58
-1.1
0
-58
0
-0.7
0
0
-0.7
0
0
-0.7
0
0
-0.7
0
0
-0.7
0
0
-0.7
0
0
-59
-0.7
0
-59
-0.7
0
-59
-0.7
0
-59
-0.7
0
-59
-0.7
0
-59
-0.7
0
-59
-0.7
-1.1
-0.6
0.4
-1.1
-0.6
0.4
-1.1
0.4
1.1
-1.1
0.4
1.1
-1.1
-0.6
0.4
-1.1
0.4
1.1
-1.1
-0.6
0.4
-1.1
0.4
1.1
-1.1
-0.6
0.4
-1.1
0.4
1.1
-1.1
-0.6
0.4
-1.1
0.4
1.1
-1.1
-0.6
0.4
-1.1
0.4
1.1
1.1
59
59
0.6
0.1
0.1
-57
-57
1.1
59
59
1.1
59
59
1.1
59
59
0.6
0.1
0.1
-57
-57
0.6
0.1
0.1
-57
-57
1.1
59
59
0.6
0.1
0.1
-57
-57
0.6
0.1
0.1
-57
-57
1.1
59
59
0.6
0.1
0.1
-57
-57
1.1
59
59
0.6
0.1
0.1
-57
-57
-56.4
16.3
-1.1
-57
-56.4
16.3
-57
-56.4
16.3
-57
-57
-56.4
-1.1
-57
-56.4
-56.4
16.3
-57
-1.1
-57
-56.4
-56.4
16.3
-57
-1.1
-57
-56.4
-57
-1.1
-56.4
-56.4
16.3
-57
-57
-1.1
-56.4
-56.4
16.3
-57
-57
-1.1
-56.4
C564
100p
C548
0.1u
C988
22u
100V
C987
22u
100V
C551
220p
C591
47p
C592
47p
C578
0.022u
C581
4p
C585
47p
C586
47p
C570
3300p
C582
4p
C558
47u 35V
C545
47u 35V
C563
220u 10V
C560
10u 50V
CL378
CL550
CL850
CL383
CL382
CL381
CL380
CL379
CL552
CL551
R553
0.22
D550
DA2J10100L
D572
DA2J10100L
D571
DA2J10100L
D570
DA2J10100L
D551
DA2J10100L
D536
DZ2J051M0L
L550
Q553
2SD2114K
LIMITER
Q570
Q551
BOOSTER
MP1620-OPY-MK
Q550
BOOSTER
MN2488-OPY-MK
C +VE
C -VE
Q552
2SA1162-G
LIMITER
Q554
MSB92T1G
CURRENT
DETECT
Q572
KTA1024-Y
PWR AMP.
Q872
KTA1024-Y
PWR AMP.
Q822
KTA1024-Y
PWR AMP.
Q672
KTA1024-Y
PWR AMP.
Q772
KTA1024-Y
XX
Q722
KTA1024-Y
PWR AMP.
Q622
KTA1024-Y
PWR AMP.
Q555
CURRENT DETECT
MSB92T1G
Q574
KTC3206-Y
PWR AMP.
Q575
KTC3206-Y
PWR AMP.
R550
4.7
R543
0.47
R542
0.47
R554
100
R567
100
R558
6.2k
R551
10
2.2k
R563
220
R573
470
R576
2.2k
R575
560
R566
22k
R555
2.2k
R556
6.8k
R381
68k
R562
270
R578
4.7k
R571
220
R574
4.7k
R570
4.7k
R572
56k
R579
2.2k
R577
0
R544
68k
R561
4.7k
R552
1.5k
R565
15k
R564
68k
R569
47k
R568
100k
R559
47k
R557
2.2k
R252
2.2k
R251
0.1u
C250
22k
R548
22k
R549
6.8k
R547
1k
R560
3.3V_TH
PROTECT
TEMP-SENSOR-1
TEMP-SENSOR-2
LIMITER
HP-DETECT
D-GND
TH252
10k
TH251
10k
C554
0.01u
E
B
C
C
B
B
C
E
E
B
C
C862
100p
C851
220p
C891
47p
C892
47p
C878
0.022u
C881
4p
C885
47p
C886
47p
C870
3300p
C882
4p
C858
47u 35V
C863
220u 10V
C860
10u 50V
CL852
CL802
CL652
CL752
CL602
CL702
CL851
R853
0.22
D850
DA2J10100L
D872
DA2J10100L
D871
DA2J10100L
D870
DA2J10100L
D851
DA2J10100L
L850
Q853
2SD2114K
LIMITER
Q870
Q851
BOOSTER
MP1620-OPY-MK
Q850
BOOSTER
MN2488-OPY-MK
SBR +VE
SBR -VE
Q852
2SA1162-G
LIMITER
Q854
MSB92T1G
CURRENT
DETECT
Q855
CURRENT DETECT
MSB92T1G
Q874
KTC3206-Y
PWR AMP.
Q875
KTC3206-Y
PWR AMP.
R850
4.7
R854
100
R867
100
R858
6.2k
R851
10
2.2k
R863
220
R873
470
R876
2.2k
R875
560
R866
22k
R855
2.2k
R856
6.8k
R382
68k
R862
270
R878
4.7k
R871
220
R874
4.7k
R870
4.7k
R872
56k
R879
2.2k
R877
68k
R861
4.7k
R852
1.5k
R865
15k
R864
68k
R869
47k
R868
100k
R859
47k
R857
1k
R860
C854
0.01u
[SBR]
[C]
E
B
C
C
B
C762
100p
C781
4p
C785
47p
C786
47p
C770
3300p
C782
4p
C763
220u 10V
C760
10u 50V
D772
DA2J10100L
D771
DA2J10100L
D770
DA2J10100L
Q770
Q774
KTC3206-Y
PWR AMP.
Q775
KTC3206-Y
PWR AMP.
2.2k
R763
220
R773
470
R776
2.2k
R775
68k
R762
270
R778
4.7k
R771
220
R774
4.7k
R770
4.7k
R772
56k
R779
2.2k
R777
68k
R761
1k
R760
E
B
C
C
B
C812
100p
C831
4p
C835
47p
C836
47p
C820
3300p
C832
4p
C813
220u 10V
C810
10u 50V
D822
DA2J10100L
D821
DA2J10100L
D820
DA2J10100L
Q820
Q570, Q620, Q670, Q720, Q770, Q820, Q870
HN4A06J-GRBL (TE85R)
PWR AMP.
Q824
KTC3206-Y
PWR AMP.
Q825
KTC3206-Y
PWR AMP.
2.2k
R813
220
R823
470
R826
2.2k
R825
68k
R812
270
R828
4.7k
R821
220
R824
4.7k
R820
4.7k
R822
56k
R829
2.2k
R827
68k
R811
1k
R810
C662
100p
C682
4p
C663
220u 10V
C660
10u 50V
2.2k
R663
68k
R662
68k
R661
1k
R660
E
B
C C
B
B
C
E
E
B
C
C651
220p
C691
47p
C692
47p
C678
0.022u
C681
4p
C685
47p
C686
47p
C670
3300p
C658
47u 35V
CL651
R653
0.22
D650
DA2J10100L
D672
DA2J10100L
D671
DA2J10100L
D670
DA2J10100L
D651
DA2J10100L
L650
Q653
2SD2114K
LIMITER
Q670
Q651
BOOSTER
MP1620-OPY-MK
Q650
BOOSTER
MN2488-OPY-MK
FR +VE
FR -VE
Q652
2SA1162-G
LIMITER
Q654
MSB92T1G
CURRENT
DETECT
Q655
CURRENT DETECT
MSB92T1G
Q674
KTC3206-Y
PWR AMP.
Q675
KTC3206-Y
PWR AMP.
R650
4.7
R654
100
R667
100
R658
6.2k
R651
10
220
R673
470
R676
2.2k
R675
560
R666
22k
R655
2.2k
R656
6.8k
R384
270
R678
4.7k
R671
220
R674
4.7k
R670
4.7k
R672
56k
R679
2.2k
R677
4.7k
R652
1.5k
R665
15k
R664
68k
R669
47k
R668
100k
R659
47k
R657
C654
0.01u
[FR]
E
B
C
C
B
B
C
E
E
B
C
C801
220p
C841
47p
C842
47p
C828
0.022u
C808
47u 35V
CL800
CL650
CL750
CL600
CL700
CL801
R803
0.22
D800
DA2J10100L
D801
DA2J10100L
L800
Q803
2SD2114K
LIMITER
Q801
BOOSTER
MP1620-OPY-MK
Q800
BOOSTER
MN2488-OPY-MK
SBL +VE
SBL -VE
Q802
2SA1162-G
LIMITER
Q804
MSB92T1G
CURRENT
DETECT
Q805
CURRENT DETECT
MSB92T1G
R800
4.7
R804
100
R817
100
R808
6.2k
R801
10
560
R816
22k
R805
2.2k
R806
6.8k
R383
4.7k
R802
1.5k
R815
15k
R814
68k
R819
47k
R818
100k
R809
47k
R807
C804
0.01u
[SBL]
B
C
E
E
B
C
C712
100p
C731
4p
C735
47p
C736
47p
C720
3300p
C732
4p
C713
220u 10V
C710
10u 50V
D722
DA2J10100L
D721
DA2J10100L
D720
DA2J10100L
Q720
Q724
KTC3206-Y
PWR AMP.
Q725
KTC3206-Y
PWR AMP.
2.2k
R713
220
R723
470
R726
2.2k
R725
68k
R712
270
R728
4.7k
R721
220
R724
4.7k
R720
4.7k
R722
56k
R729
2.2k
R727
68k
R711
1k
R710
E
B
C C
B
C701
220p
C741
47p
C742
47p
C728
0.022u
C708
47u 35V
CL701
R703
0.22
D700
DA2J10100L
D701
DA2J10100L
L700
Q703
2SD2114K
LIMITER
Q701
BOOSTER
MP1620-OPY-MK
Q700
BOOSTER
MN2488-OPY-MK
SL +VE
SL -VE
Q702
2SA1162-G
LIMITER
Q704
MSB92T1G
CURRENT
DETECT
Q705
CURRENT DETECT
MSB92T1G
R700
4.7
R704
100
R717
100
R708
6.2k
R701
10
560
R716
22k
R705
2.2k
R706
6.8k
R387
4.7k
R702
1.5k
R715
15k
R714
68k
R719
47k
R718
100k
R709
47k
R707
C704
0.01u
[SL]
B
C
E
E
B
C
C612
100p
C631
4p
C635
47p
C636
47p
C620
3300p
C632
4p
C613
220u 10V
C610
10u 50V
D622
DA2J10100L
D621
DA2J10100L
D620
DA2J10100L
Q620
Q624
KTC3206-Y
PWR AMP.
Q625
KTC3206-Y
PWR AMP.
2.2k
R613
220
R623
470
R626
2.2k
R625
68k
R612
270
R628
4.7k
R621
220
R624
4.7k
R620
4.7k
R622
56k
R629
2.2k
R627
68k
R611
1k
R610
E
B
C C
B
C751
220p
C791
47p
C792
47p
C778
0.022u
C758
47u 35V
CL751
R753
0.22
D750
DA2J10100L
D751
DA2J10100L
L750
Q753
2SD2114K
LIMITER
Q751
BOOSTER
MP1620-OPY-MK
Q750
BOOSTER
MN2488-OPY-MK
SR +VE
SR -VE
Q752
2SA1162-G
LIMITER
Q754
MSB92T1G
CURRENT
DETECT
Q755
CURRENT DETECT
MSB92T1G
R750
4.7
R754
100
R767
100
R758
6.2k
R751
10
560
R766
22k
R755
2.2k
R756
6.8k
R385
4.7k
R752
1.5k
R765
15k
R764
68k
R769
47k
R768
100k
R759
47k
R757
C754
0.01u
[SR]
SR_OUT
B
C
E
E
B
C
C601
220p
C641
47p
C642
47p
C628
0.022u
C618
47u 35V
CL601
R603
0.22
D600
DA2J10100L
D601
DA2J10100L
L600
Q603
2SD2114K
LIMITER
Q601
BOOSTER
MP1620-OPY-MK
Q600
BOOSTER
MN2488-OPY-MK
FL +VE
FL -VE
Q602
2SA1162-G
LIMITER
Q604
MSB92T1G
CURRENT
DETECT
Q605
CURRENT DETECT
MSB92T1G
R600
4.7
R604
100
R617
100
R608
6.2k
R601
10
560
R616
22k
R605
2.2k
R606
6.8k
R386
4.7k
R602
1.5k
R615
15k
R614
68k
R619
47k
R618
100k
R609
47k
R607
C604
0.01u
[FL]
[C]
[FR]
[FL]
[SBL]
[SBR]
[SL]
[SR]
B
C
E
E
B
C
>001S
MAIN
BOARD
(5/7)
(Page 28)
>003S
MAIN BOARD (3/7)
(Page 26)
>004S
MAIN BOARD (2/7)
(Page 25)
>002S
MAIN
BOARD
(2/7)
(Page 25)
DH750
Ver. 1.1
Click on the first or last page to see other STR-DH550 / STR-DH750 service manuals if exist.