Sony STR-KM2 / STR-KM3 Service Manual ▷ View online
5-5. BLOCK DIAGRAM – POWER KEY Section –
6
2
3
3
DRIVE
PRE DRIVER
IC701
IN 1
+VOUT1
-VOUT2
8
12
11
11
IN 2
+VOUT2
-VOUT2
FL-CH
FR-CH
FL-CH
FR-CH
SL-CH
SW-CH
SR-CH
SL-CH
SR-CH
+3.3V
(STBY)
-7V
+7V
1
6
2
3
3
DRIVE
PRE DRIVER
IC601
IN 1
+VOUT1
-VOUT2
8
12
11
11
IN 2
+VOUT2
-VOUT2
+5V
(STBY)
+3.3V
REG
IC2107
-15V
+15V
+7V
REG
IC951
+5V
REG
IC2812
-7V
REG
IC950
+5V
FRONT_SPK_A_R
Y
SBL-SBR_R
Y
C/SL-SR_R
Y
PROTECTOR
IO_EX_CLK
IO_EX_LAT
IO_EX_DATA
IO_EX_OE
FUSE_DET 82
SYSTEM
CONTROL
IC2105 (4/4)
PRE
DRIVE
C-CH
6
2
3
3
DRIVE
PRE DRIVER
IC501
IN 1
+VOUT1
-VOUT2
PRE
DRIVE
PRE
DRIVE
6
2
3
3
DRIVE
PRE DRIVER
IC801
IN 1
+VOUT1
-VOUT2
8
12
11
11
IN 2
+VOUT2
-VOUT2
PRE
DRIVE
VOLTAGE
DETECTION
IC2421
2-4,15
11-14
10-8,3
SHIFT REGISTER
IC2036
R
L
L
CENTER
SURROUND
SUBWOOFER
R
TB355
TB353
TB354
FRONT
SPEAKERS
T901
POWER TRANSFORMER
(MAIN)
F901
F902
POWER TRANSFORMER
(SUB)
T902
AC IN
~
RECT
D952
F952
F953
F954
F955
RY901
D904
F950
F951
F911
F912
RECT
D953-956
RECT
D912
PROTECTOR
D862-863
Q863-867
Q863-867
D520 -
523
POWER AMP
Q700-703,
Q750-753
POWER AMP
Q500-503,
Q550-553
POWER AMP
Q600-603,
Q650-653
POWER AMP
Q800-803
RY353
RY354
RELAY
DRIVER
Q354
RELAY
DRIVER
Q353
RY950
RELAY
DRIVER
Q950
D2110,
2302,
2303
RY355
RELAY
DRIVER
Q355
2
1
TB352
RY352
RELAY
DRIVER
Q352
CURRENT
DETECT
Q761,762
CURRENT
DETECT
Q711,712
CURRENT
DETECT
Q811,812
CURRENT
DETECT
Q561,562
CURRENT
DETECT
Q511,512
CURRENT
DETECT
Q661,662
CURRENT
DETECT
Q611,612
RELAY
DRIVER
Q901
AC IN
DETECT
Q902
RECT
D902,D903
240V
220V
120V
R
R
S901
VOLTAGE SELECTOR
SLJQDO SDWK
: TUNER (FM/AM)
R-FK LV RPLWWHG GXH WR
R-FK LV RPLWWHG GXH WR
VDPH DV L-FK.
4
4
73
1
5
4
5
4
4
2
POWER_RY
80
STOP
TUNER/
AUDIO
SECTION
(Page 13)
(Page 13)
B
SIGNAL
SELECTOR
IC2032 (2/2)
KM2: E51
KM3: E51, EA
KM3: E51, EA
KM2: E51
KM3: E51, EA, MX
KM3: E51, EA, MX
EXCEPT MX
KM3
AEEUHYLDWLRQ
E51 : CKLOHDQ DQG PHUXYLDQ PRGHOV
EA : SDXGL AUDELD PRGHO
MX : MH[LFDQ PRGHO
E51 : CKLOHDQ DQG PHUXYLDQ PRGHOV
EA : SDXGL AUDELD PRGHO
MX : MH[LFDQ PRGHO
STR-KM2/KM3
STR-KM2/KM3
17
17
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 : fl usible resistor.
• C : panel designation.
• 2 : nonfl ammable resistor.
• 5 : fl usible 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 : TUNER
• Voltages are taken with a VOM (Input impedance 10
• Voltages are taken with a VOM (Input impedance 10
M
). Voltage variations may be noted due to normal pro-
duction tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F :
F :
TUNER
(FM/AM)
f :
TUNER
E :
VIDEO
J
: DVD (DIGITAL)
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• f : Internal component.
•
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• f : Internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
C E
B
These are omitted.
Note: The components identifi ed by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specifi ed.
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
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.
• Abbreviation
AR :
AR :
Argentina
model
AUS :
Australian
model
E51
: Chilean and Peruvian models
EA
: Saudi Arabia model
MX
: Mexican model
RU
: Russian model
SAF : South African model
SP
SP
: Singapore model
TH :
Thai
model
• Abbreviation
AR :
AR :
Argentina
model
AUS :
Australian
model
E51
: Chilean and Peruvian models
EA
: Saudi Arabia model
MX
: Mexican model
RU
: Russian model
SAF : South African model
SP
SP
: Singapore model
TH :
Thai
model
240m Vp-p
24.59 MHz
2
IC2123
2 (MCK)
100 mV/DIV, 10 ns/DIV
1.54 Vp-p
24.57 MHz
5
IC2806
ea (XOUT)
500 mV/DIV, 10 ns/DIV
3.0 Vp-p
4.0 MHz
1
IC2105
os (X1(X_OUT))
500 mV/DIV, 100 ns/DIV
3.0 Vp-p
3.1 MHz
3
IC2123
3 (BCK)
500 mV/DIV, 100 ns/DIV
3.4 Vp-p
47.81 kHz
4
IC2123
4 (LRCK)
500 mV/DIV, 5
Ps/DIV
• Waveforms
– DIGITAL AUDIO Board –
– DISPLAY Board –
6
IC100
5 (OSC)
200 mV/DIV, 2.5
Ps/DIV
154.8 kHz
1.29 Vp-p
Ver. 1.1
STR-KM2/KM3
STR-KM2/KM3
18
18
STR-KM2/KM3
STR-KM2/KM3
19
19
5-6. PRINTED WIRING BOARD – DIGITAL AUDIO Board (Side A) –
• See page 12 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
IC2106
IC2812
1
100
8180
51
30
31
IC2105
50
IC2804
IC2036
IC2421
IC2007
IC2805
IC2123
IC2009
1
14
15
28
IC2351
IC2352
IC2806
1
16
17
32
33
48
49
64
IC2303
IC2813
133
132
88
89
45
44
176
1
IC2801
177
IC2019
IC2033
IC2020
IC2802
IC2010
VCC
O
VCC
O
R2860
R2861
R2863
R2864
R2865
R2866
R2867
R2868
R2099
R2872
R2875
R2876
RB2010
R2880
R2881
R2882
R2886
R2889
R2895
R2897
R2898
R2899
1
12
CN2103
CN2104
CN2105
1
1
14
14
C2101
1
11
3
4
CN2501
1
8
CN2502
1
2
15
14
CN2503
CN2504
1
6
CN2506
CN2506
1
2
21
20
CN2508
C21
14
CN2509
19
C2501
C2119
C2502
C2503
C2504
C2507
C2121
C2125
C2126
C2127
R2100
C2128
C2512
R2105
R2107
X2800
C2130
R2109
X2801
C2901
C2131
D2302
D2303
D21
10
C2136
C2137
C2909
R2111
R2112
R21
16
C2140
C2912
C2913
FB2603
FB2604
R2311
C2917
FB2608
C2918
R2124
R2125
FB2031
FB2032
C2920
R2129
C2923
R2321
R2322
R2132
R2327
C2351
R2906
FB2043
D2717
C2354
D2719
C2355
C2358
C2359
D2720
D2721
D2722
R2912
D2723
D2724
C2361
R2725
R2919
R2726
R2727
R2728
R2729
C2370
R2925
R2732
R2733
R2540
R2158
R2735
R2541
R2159
R2929
R2736
R2351
R2354
R2930
R2932
R2356
R2933
R2357
R2358
C2961
C2962
C2963
C2964
C2965
C2966
C2967
R2940
C2968
R2941
C2969
R2172
R2173
R2945
R2947
R2948
C2970
R2949
C2972
C2973
C2974
C2975
R2759
C2976
C2977
C2978
R2957
R2958
R2959
R2960
R2962
R2963
RB2102
R2392
RB2103
RB2104
RB2105
RB2107
RB2109
FB2884
R2979
FB2885
FB2889
R2983
R2984
FB2890
R2985
FB2891
RB21
19
R2986
FB2892
R2987
FB2893
FB2894
R2989
RB2121
RB2123
RB2124
RB2125
RB2126
R2992
RB2127
R2993
R2997
R2998
R2999
C2001
JL2808
JL2809
X2101
JL281
1
JL2812
C2203
C201
1
C2206
C2013
J2301
C2402
C2022
C2023
FB2101
C2413
C2609
R2006
R2007 C2418
C2421
C2422
D2018
C2424
R2015
C2619
FB2501
FB2502
C2814
R2211
C2815
C2816
C2818
R2601
R2602
R2607
C2823
C2248
R2220
C2825
C2826
R2802
R2610
R2809
R2615
R2421
R2617
R2618
R2619
C2838
C2069
R2815
R2621
R2622
R2816
C2070
C2841
C2459
R2626
C2842
C2266
C2072
C2074
C2846
C2847
C2849
R2052
R2824
R2825
R2249
C2465
R2826
C2466
C2273
R2058
C2274
C2468
R2829
R2059
C2469
C2858
C2470
R2831
R2834
R2835
R2837
R2838
C2860
C2861
C2863
C2864
C2865
C2866
C2096
C2868
C2869
R2843
R2846
R2847
R2849
C2873
C2875
C2876
C2877
R2851
R2852
R2854
R2855
R2856
R2857
R2858
R2859
C2881
C2883
R2002
FB2896
FB2801
2
9
1
8
CN2505
FB2033
FB2898
FB2899
R2620
A2001
R2157
C2853
DIGITAL
AUDIO
BOARD
(SIDE A)
1-885-324-
11
(11)
(CHASSIS)
(CHASSIS)
COAXIAL
BD/DVD IN
FLASH
PROGRAMMING
OPTICAL
SAT/
CATV
IN
OPTICAL
GAME
IN
DIGITAL
I
MAIN BOARD
CN300
(Page 25)
H
MAIN BOARD
CN301
(Page 25)
A
TUNER1
BOARD
CN101
(Page 43)
B
LED BAR
BOARD
CN104
(Page 40)
C
THERMAL
BOARD
CN250
(Page 44)
D
USB
BOARD
CN4100
(Page 41)
E
DCDC BOARD
CN1503
(Page 38)
F
POWER
AVIDEO BOARD
CN271
(Page 34)
G
HDMI RE
BOARD
CN3512
(Page 30)
X2101
FLASH
PROGRAMMING
KM3
EXCEPT SAR, AR
Note: IC2036 on the DIGITAL AUDIO board cannot exchange with
single. When this part on the DIGITAL AUDIO board is
damaged, exchange the entire mounted board.
damaged, exchange the entire mounted board.
STR-KM2/KM3
STR-KM2/KM3
20
20
5-7. PRINTED WIRING BOARD – DIGITAL AUDIO Board (Side B) –
• See page 12 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
IC2032
IC2107
O
VCC
IC281
1
R2285
R2878
R2879
C21
12
D2104
R2104
Q2706
B
E
E
C2905
C2906
C2908
C2910
C2914
C2722
C2921
C2922
R2324
R2130
R2901
R2131
D2714
D2715
D2716
R2910
R2914
D2725
R2915
C2958
R2939
R2746
C2198
R2943
CL2001
CL2002
CL2003
CL2004
CL2005
CL2006
CL2007
CL2009
R2951
R2952
CL2200
CL2201
CL2203
CL2204
CL2010
CL2012
CL2015
CL2016
CL2017
CL2018
CL2019
CL2210
CL2212
CL2213
CL2214
CL2020
CL2215
CL2216
CL2022
CL2217
CL2218
CL2024
CL2219
CL2025
CL2027
CL2028
CL2030
CL2031
CL2032
R2980
CL2040
JL2021
CL2041
JL2022
CL2045
CL2048
CL2049
R2996
CL2050
CL2051
CL2053
CL2055
CL2056
C2003
CL2058
CL2059
Q2006
B
E
CL2061
JL2814
CL2064
JL2815
CL2065
JL2816
CL2066
JL2817
CL2067
JL2818
CL2068
JL2819
CL2069
JL2820
CL2070
JL2821
CL2071
JL2822
CL2072
JL2823
CL2073
JL2824
CL2074
C2021
JL2825
JL2826
D2003
D2004
JL2830
CL2080
R2005
JL2831
C2416
JL2832
CL2082
C2417
JL2833
CL2083
JL2834
JL2835
CL2085
JL2836
CL2086
JL2837
JL2838
CL2088
JL2839
JL2840
D2019
CL2091
JL2842
CL2092
JL2843
CL2093
JL2844
JL2845
CL2095
JL2846
JL2847
CL2097
JL2848
CL2098
FB2311
C2817
C2819
C2820
C2821
C2822
C2824
R2415
R2416
R2417
C2827
C2828
C2829
R2228
R2807
C2830
C2831
C2832
IC2034
JL2868
C2835
JL2869
C2836
C2837
JL2870
JL2871
JL2872
C2840
C2265
C2267
JL2878
C2844
C2268
C2845
C2269
R2050
R2053
C2270
C2272
C2850
C2851
C2852
C2854
R2251
C2855
C2856
C2857
C2859
R2839
C2862
C2093
R2840
R2841
R2842
R2844
C2870
C2871
C2872
R2850
R2853
C2884
R2283
R2001
C2971
R2995
R2994
R2730
D2730
D2729
DIGITAL
AUDIO
BOARD
(SIDE B)
1-885-324-
11
(11)
Note: IC2811 on the DIGITAL AUDIO board cannot exchange with
single. When this part on the DIGITAL AUDIO board is
damaged, exchange the entire mounted board.
damaged, exchange the entire mounted board.
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