STR-KM22/KM55/KM77
STR-KM22/KM55/KM77
2121
5-5. PRINTED WIRING BOARD – MAIN Board (Component Side) –
• See page 14 for Circuit Boards Location. • : Uses unleaded solder.
Note: IC2010 and IC2700 on the MAIN board cannot exchange
with single. When these parts on the MAIN board are dam-
aged, exchange the entire mounted 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
D940
D365
D941
HS921
R2092
R2095
R2096
R2097
R2098
Q852
Q853
R601
R603
R604
R605
R606
R608
D570
R800
D571
R801
D572
R803
RB2010
JL2108
Q670
R610
R804
JL2109
R611
R805
Q672
R612
R806
R613
Q674
R420
R808
Q675
R421
R422
R616
R423
R617
JL2110
D770
JL 2111
JL2112
D772
Q870
Q872
R812
R813
Q874
Q875
R621
R622
R816
R623
R817
R624
R628
R629
JL2700
JL2701
R821
JL2702
R822
JL2703
R823
JL2704
RB2800
R824
JL2705
RB2801
R631
JL2706
JL2707
R828
R829
R251
R252
R253
C2101
X2001
R449
R831
X2002
C603
R450
2
27
26
1
CN2503
C803
28
19
CN2505
C612
R760
R761
C762
R660
R661
C662
R810
R811
C812
C613
C2114
C808
1
2
19
18
CN2509
R651
R653
15
67
CN2700
R654
C618
R655
C2502
R656
C2503
2
49
50
1
CN2128
C2504
R658
C2507
C813
R851
R853
113
14
1
2
13
CN2900
R854
C430
R855
C431
R662
R856
C432
C2127
R663
C433
R470
R858
C434
R2101
R471
R472
R666
R2103
R473
R667
C2514
C2708
R2104
C2709
R2105
C2516
R2106
R2107
Q2708
R2108
C2900
X2800
R860
Q2709
C2901
R861
C631
R862
C632
R863
JW003
28 1
15 14
IC2104
D2304
Q2901
D2305
IC2105
R671
C441
C635
Q2902
DD
DD
GS
JW006
C2136
D2306
1
51
25
75
76
50
26
100
IC2106
R672
R866
C636
JW007
C2137
D2307
41
58
IC2107
R673
R867
EB
BEBE
BE
BE
BE
JW008
R2110
R674
C250
R2 111
R2112
R2113
R678
R679
TH251
C831
TH252
C832
TH253
JW010
C2140
R2118
8
5
1
4
IC2110
R2119
213 213
R871
C835
R872
C836
IC2113
R873
C2720
1
16
1732
33
48
49 64
IC2114
R874
D2315
IC2115
R681
IC2117
D2318
IC2118
R878
F910
D2319
8
14 1
7
IC2119
R879
F911
FB2800
FB2031
FB2032
FB2033
FB2034
FB2035
R2129
R881
FB2036
FB2037
D2323
C653
C2924
FB2038
1
40
21
20
10
11
31
30
IC2700
C2925
FB2039
5
81
4
C2926
C2927
C2928
R2130
R2900
C658
R2131
FB2040
FB2041
R2135
FB2042
FB2043
C853
C2354
FB2044
C2931
FB2045
C2932
FB2046
1
4
5
8
IC2903
FB2047
C663
C2934
C2358
FB2048
C858
FB2049
Q702
Q703
C2168
R2142
R2143
FB2050
R2144
Q320
C2361
FB2051
R2145
Q321
FB2052
C862
FB2053
R2147
C863
Q323
R2724
Q324
Q325
C480
C481
C482
85
14
85
14
IC402
C483
C484
L700
R2152
R2153
C487
R2154
R2924
RR10
R2925
RR11
R2732
R2926
RR12
R2927
RR13
R2928
D620
RR14
R2929
C681
RR15
C682
D622
RR16
RR17
Q720
RR18
C491
C685
C686
Q722
R2930
Q724
Q725
D820
C881
C882
D822
C885
C886
C2198
J403
R2952
Q552
R2953
Q553
R2954
R2955
R2956
Q752
Q753
R2960
R2961
L550
R505
R509
R700
R701
RB2102
RB2103
R703
RB2104
Q570
B
CC
B
B
CC
B
B
CC
BB
CC
B
B
CC
B
B
CC
B
B
CC
B
L750
R704
RB2105
R705
Q572
R706
RB2107
Q574
R708
RB2109
Q575
R323
D670
R325
D672
R327
Q770
R328
R710
R711
Q772
R712
R713
Q774
Q775
B351
R716
R717
D870
RB2119
D872
RB2121
R721
R722
RB2123
R723
RB2124
R724
RB2125
R531
RB2126
RB2127
R728
R729
JL2801
TB351
JL2802
JL2803
TB354
C2001
R731
RB2133
C503
Q2001
R929
C2006
Q2002
R542
C2007
Q2003
R543
RB2138
C2008
R544
C2009
R547
R548
JL2811
Q2009
R549
R931
R932
R933
C703
R934
C2011
R935
R936
C2013
C2014
R550
C320
C708
C2015
R551
R553
C323
R554
R555
C325
C2402
R556
R558
C712
C713
C2020
R750
R751
C2022
R753
R560
R754
C2025
17
89
CN2801
R561
R755
R562
R756
C2027
R563
C2028
R758
R566
C912
C2413
R567
C913
C2416
C2417
R2007
R2008
C2800
R2009
C2801
HS2001
C2802
HS2002
R762
C2803
R763
C2034
C2804
Q2800
R570
R571
R572
R766
R573
R767
R2010
C2808
R574
C2421
R2011
R381
R575
C2422
R2012
R382
R576
R2013
R383
R577
C2424
R2014
R384
R578
R385
R579
C731
R386
C732
JL2843
R2017
R387
JL2844
C2040
C2810
64
13
IC2010
C2041
R2019
C2811
R771
C735
C2042
C2812
R772
C736
JL2847
C2043
C2813
R773
C2814
R774
C2621
C2045
C2815
R581
C351
C545
C2046
C2816
C546
JL912
C2623
C2047
C2817
C353
C547
JL913
R2020
R778
C354
15
CN950
C548
C930
C2049
R779
C355
15
CN951
C931
C2626
C356
C2627
R2023
R2025
C2050
C2051
R2029
R781
C2052
C553
C2054
D2800
D2801
C2056
D2802
D2803
R2030
R2800
C558
D2805
FB2901
C2059
R2031
FB2902
R2032
R2229
R2035
R2806
R2807
C753
C2060
R2038
R2808
1
2551
75
50 26
76 100
IC2800
C2063
IC2803
C563
C2064
C564
C758
CC10
CC11
R2232
C2066
CC12
Q602
R2233
CC13
Q603
R2234
C2068
R2040
CC14
R2235
R2041
CC15
R2236
R2042
CC16
R2043
R2813
CC17
R2044
CC18
R2045
R2816
R2047
C763
R2048
R2818
C570
D721 R720
R725
R726
R727
C720
D621 R620
R625
R626
R627
C620
D771 R770
R775
R776
R777
C770
D671 R670
R675
R676
R677
C670
D821 R820
R825
R826
R827
C820
D871 R870
R875
R876
R877
C870
C2265
R2049
R2819
C2266
Q802
C2267
Q803
C2268
C2269
R2050
R2820
RY920
R2051
R2821
R2052
R2822
D326
R2053
D327
C2270
R2054
R2055
R2825
C2272
R2056
R2826
C2273
R2057
R2827
C2274
R2828
C2469
R2829
C581
C582
RY350
Q620
L800
C585
C586
Q622
R2060
R2830
Q624
D910
R2061
R2831
RY355
Q625
D911
R2062
R2832
D912
D913
R2063
R2064
D720
R2065
C781
C782
D722
C977
R2068
Q820
C785
C786
Q822
RY360
Q824
Q825
C2096
D536
D920
R2071
RY365
D921
R2072
C983
R2073
C984
R2074
C985
R2075
R2845
C986
R2076
R2846
R2077
R2847
R2078
R2848
R2079
D350
R2080
R2850
R2081
D355
R2082
R2083
R2084
R2087
D937
D938
R2859
D939
RY380
Q652
Q653
C2359
C2355
C710
C560
C610
C760
C810
C660
C860
LP402
2
1
3
IC350
1
23
IC352
C352
C350
D352
R2033
R2239
R2238
D356
J2301
IC2111 IC2112
BE
EB
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
EBEBEBEBEBEBEB
E
B
Q550
BCE
Q551
BCE
Q700Q701
BCEBCE
Q600
BCE
Q601
BCE
Q750Q751
BCEBCE
Q650
BCE
Q651
BCE
Q800Q801
BCEBCE
Q850Q851
BCEBCE
F914
F915
FH953FH954
FH955FH956
1013
CN2504
1
3
CN351
15
CN953
1
4
CN956
16
CN955
12
CN952
16
CN958
13
CN957
15
CN2511
TB355TB353TB352
TB356
R2703
R2704
R2705
R2725
C2702
C2712
C2703
X2700
C2714
RB2802
C2706
C2711
FB2900
R2711
R2712
R2713
R2714
R2722
R2957
R2958
C2716
C2705
R2709
R2726
D2702
IC2702
R2701
R2702
C2701
C2704
R2706
R2707
R2708
R2710
C2700
IC2701
C2715
C2717
R2721
R2719
C2713
R2716
R2717
C2710
D2700
D2701
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
BE
DD
DD
GS
MAIN BOARD
(COMPONENT SIDE)
1-889-212-
12
(12)
EXCEPT SAF, AR
KM55, KM77
KM55, KM77
KM22
CENTER
SURROUND BACKSUBWOOFER
RL
SURROUND
RL
FRONT
RL
X2800
X2002
KM22
KM77
KM77
KM77
KM55, KM77
KM22
KM22
KM55, KM77
KM55, KM77
KM55, KM77
KM55, KM77
>009P
STANDBY BOARD
CN912
(Page 38)
>010P
FRONT USB
BOARD
CN106
(Page 41)
>003P
POWER
TRANSFORMER
(MAIN)
T901
(Page 38)
>004P
SURR BACK AMP
BOARD
CN405
(Page 42)
>005P
SUB RECTIFIER
BOARD
CN932
(Page 40)
>006P
SURR BACK AMP
BOARD
CN406
(Page 42)
>002P
SUB RECTIFIER
BOARD
CN931
(Page 40)
>001P
POWER
TRANSFORMER
(MAIN)
T901
(Page 38)
12
CN952
KM77
15
CN953
KM77
1
4
CN956
KM55, KM77
KM22
>008P
LED BAR
BOARD
CN104
(Page 44)
>007P
TUNER1AMPR
BOARD
CN101
(Page 41)
2
27
26
1
CN2503
28
19
CN2505
KM77
>014P
SURR BACK AMP
BOARD
CN405
(Page 42)
1
3
CN351
KM77
BLUETOOTH
MODULE
113
14
1
2
13
CN2900
PROGRAMMING JIG
(HDMI KSV)
>012P
DSP BOARD
CN5001
(Page 35)
>011P
STANDBY BOARD
CN912
(Page 38)
>013P
HDMI RE PC
BOARD
CN3009
(Page 32)
>015P
SUB RECTIFIER
BOARD
CN932
(Page 40)
2
49
50
1
CN2128
COAXIAL
IN
OPTICAL
IN 2
OPTICAL
IN 1
R
L
R
L
R
L
(CHASSIS)
AUDIO
IN 1
AUDIO
IN 2
AUDIO
TV IN
SUBWOOFER
SPEAKERS
KM77
KM77
KM77
(CHASSIS)
+
+
–
+
–
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
Ver. 1.2
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