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Model
STR-KM3500
Pages
52
Size
4.59 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
str-km3500.pdf
Date
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STR-KM3500
STR-KM3500
9
9
5-1.  BLOCK  DIAGRAM  - MAIN Section -
ROUT, LOUT
‡ 6,*1$L 3$T+
SYSTEM CONTROLLER
IC1101 (1/3)
SWITCH
IC1014
78
97
94
5
16
DSP
 SPDIF(LA
T)
21
XRST
8
DSP
 INT
47
SPIDS
RESET
FLAG0
DSP
IC1501
D/A CONVERTER
IC2211
5
7
8
6
11
12
19
20
21
22
26
27
65
87
70
64
86
DSP
 SPI CLK
: AUDIO (ANALOG)
: AUDIO (DIGITAL)
143
142
X1302
25MHz
XTAL
CLKIN
122 121 15
20
MOSI
19
MISO
18
SPICLK
MOSI
MISO
125 127 126
13
14
3
4
R
R, L, SW, C, SR, SL
SW
L
SR
SL
C
79
DIR_DA
TA0
1
21
33
36
16
34
OPTICAL
GAME IN
DIGITAL OPTICAL
RECEIVER
IC1351
WAVE
SHAPER
IC1303
DIGITAL AUDIO
INTERFACE RECEIVER
IC1201
J1301
5
COAXIAL
BD/DVD IN
DIGITAL
A/D CONVERTER
IC1401
21
22
X2201
12.288MHz
XOUT
XIN
99
94
10
98 97 95 96 93
37 38 40 39 41
VOUT6
VOUT5
VOUT4
VOUT3
VOUT2
VOUT1
DATA1
DATA2
DATA3
SCK
BCK
LRCK
MC-SCL-DEMP
MD-SDA-MUTE
DAC_IIC_CLK
DAC_IIC_DA
T
DPSOA DAI_P6(L&R)
DPSOB DAI_P7(SL&SR)
DSPOC DAI_P8(C&SW)
DAI_P16 DPDVLRCK (LRCK OUT)
DAI_P17 DPDVBCK (BCK OUT)
FLAG1
DAI_P11 DPSIA
FLAG2 NONAUDIO*
RDATA
AUDIO /VO
RERR
DIR_ERROR
RMCK
DAI_P20 DPFSCK
1
2
3
CK
D
Q
Q
9
8
6
7
13
14
27
20
17
88
89
ROUT
LOUT
RX3
RX6/UI
RBCK
RLRCK
XMCK
SCKI
LRCK
BCK
DOUT
VINL
VINR
CKST
DO
DI
CE
CL
XMODE
DIR_XMODE
DIR_CKSEL1
DIR_CLK
DIR_CE
DIR_DI
DIR_DO
51
49
28
27
FLASH1/DMPORT_MICOM TX
FLASH2/DMPORT_MICOM RX
MD2
MD0
FLASH2
MD2
MD0
RESET
FLASH1
CNS504
5
6
8
9
3
FLASH
PROGRAMMING
77 RSTX
IC1111
RESET
TEMP
 SENSOR 1
2
TEMP
SENSOR
IC4903
46
TEMP
 SENSOR 2
2
TEMP
SENSOR
IC4902
44
DAI_P12 DPSIB
DAI_P18 DPLRCK(LRCK IN)
DAI_P19 DPBCK(BCK IN)
A
B
AMP
SECTION
(Page 10)
AMP
SECTION
(Page 10)
SECTION  5
DIAGRAMS
STR-KM3500
STR-KM3500
10
10
5-2.  BLOCK  DIAGRAM  - AMP Section -
SYSTEM CONTROLLER
IC1101 (2/3)
10
DA
TA
11
CLK
L CH
R CH
DO
DI
INL1 (TUNER_L)
INL1 (TUNER_R)
63
64
VOL_IC_CLK
25
VOL_IC_DA
TA
24
89
FM 75W
COAXIAL
91
90
92
ANTENNA
TUNER (FM/AM)
AM
INPUT SELECTOR,
ELECTRICAL VOLUME
IC400
FM ANT
GND
AM ANT
GND
CLOCK
CE
DO/SD/ST
TUNER_DA
TA
TUNER_CLK
SLA
TCH
29
30
56
52
55
51
J401
J403
J404
SLIN
68
CIN
70
SWIN
71
LIN
72
78
SD
TUNER_SD
x SIGNAL PATH
: TUNER
: AUDIO (ANALOG)
FLOUT 14
SL
L, R, C, SW, SL, SR
C
L
SW
SRIN
69
SR
RIN
73
R
LIMITER
Q701, 702
BOOSTER
Q703
BOOSTER
Q704
CURRENT
DETECT
Q711, 712
RELAY DRIVE
Q375
RELAY DRIVE
Q350
RELAY DRIVE
Q360
PROTECT
OR
61
66
VACS CTRL
45
LIMITER
43
PROTECT
SWITCH
Q320, 321, 323,
327, 325
+VOUT1 2
NF1 5
-VOUT1 3
LIMITER
Q551, 552
BOOSTER
Q553
BOOSTER
Q554
CURRENT
DETECT
Q550, 555
IN1
6
POWER AMP
IC901
+VOUT1 2
NF1 5
-VOUT1 3
LIMITER
Q851, 852
BOOSTER
Q853
BOOSTER
Q854
IN1
6
COUT 16
+VOUT2 12
NF2 9
-VOUT2 11
LIMITER
Q801, 802
BOOSTER
Q503
BOOSTER
Q654
CURRENT
DETECT
Q8111, 812
IN2
8
POWER AMP
IC601
CURRENT
DETECT
Q861, 862
15
SWOUT
RY360
RY350
RY375
HP_DETECT
HP_R
Y
67
55 62 70
J790
PHONES
RELAY DRIVE
Q365
RY365
1
2
3
4
5
R
FRONT
R
L
L
-
+
TB601
SPEAKERS
C/SUR RL
Y
SB/SW RL
Y
L/FR RL
Y
D1301
D1302
D1510
L
R
SA-CD/CD
TV
L
R
AUDIO OUT
AUDIO IN
L
R
AUDIO IN
L
R
L
R
AUDIO IN
AUDIO IN
SA
T/CA
TV
VIDEO 2
L
R
VIDEO 1
L
R
AUDIO OUT
AUDIO IN
48
46
47
45
26
42
25
41
RECL3
RECR3
RECL1
RECR1
INL12
INR12
INL10
INR10
INL9
INR9
INL7
INR7
INL5
INR5
B
75
ROUT
ROUT, LOUT
76
LOUT
LOUT
ROUT
A
FROUT
SROUT
MAIN
SECTION
(Page 9)
MAIN
SECTION
(Page 9)
+VOUT1 2
NF1 5
-VOUT1 3
IN1
6
13
+VOUT2 12
NF2 9
-VOUT2 11
IN2
8
LIMITER
Q751, 752
BOOSTER
Q753
BOOSTER
Q754
CURRENT
DETECT
Q761, 762
1
2
3
4
5
6
CENTER
+
-
+
-
+
-
TB604
SUBWOOFER
17
LIMITER
Q601, 602
BOOSTER
Q603
BOOSTER
Q604
POWER AMP
IC801
RELAY DRIVE
Q355
RY355
+VOUT1 2
NF1 5
-VOUT1 3
IN1
6
SLOUT 18
+VOUT2 12
NF2 9
-VOUT2 11
IN2
8
LIMITER
Q661, 66 2
BOOSTER
Q653
BOOSTER
Q654
CURRENT
DETECT
Q661, 662
1
2
3
4
+
+
-
-
TB602
SURROUND
L
R
POWER AMP
IC701
CURRENT
DETECT
Q611, 612
STR-KM3500
STR-KM3500
11
11
5-3.  BLOCK  DIAGRAM  - POWER SUPPLY AND DISPLAY Section -
FL DISPLAY DRIVER
IC102
61
I
64
‡
1
I
31
75
FL_DATA
55 DIN
76
FL_LAT
53 CSB
74
FL_CLK
54 CLKB
GRID1
I
GRID11
SG1
I
SG4
SG5
I
SG35
SYSTEM
CONTROL
IC1101 (3/3)
NIGHT_MODE 60
MULTI_ST 59
32
I
42
AD1
AD2
59
60
+5V
REG
54 SIRCS
REMOTE CONTROL
SIGNAL RECEIVER
IC101
SIRCS
+3.3V (STBY)
+3.3V (DSP)
+1.2V (DSP)
+5V (DSP)
-7V
+5V
+7V
TU+9V
58
48
+9V (STBY)
-18V
+18V
+5V
REG
IC251
IC1905
+5V
REG
+3.3V
REG
+3.3V
REG
IC1002
+1.2V
REG
IC252
+3.3V
REG
1
3
IC1904
+9V
REG
IC1902
-15V
+15V
+7V
REG
IC350
-7V
REG
IC352
FUSE_DETECT
STOP
63
POWER_RY
T901
POWER
TRANSFORMER
(MAIN)
T902, 903
SUB POWER
TRANSFORMER
AC IN
RECT
D921
RF912
RF913
RY901
D990
F910
F911
RF940
RECT
D910-913
RECT
D941
RY920
RELAY
DRIVER
Q920
RELAY
DRIVER
Q901
AC IN
DETECT
Q990
RECT
D950-953
120V
S901
220V
240V
VOLTAGE
SELECTOR
F902
F903
F901
JS904
JS903
JS906
JS902
E51
EXCEPT E51
E51
SAF, SP, AR, TH
MX
68
BRIDGEABLE_RY
JS901
VIN
ON/OFF
5
1
IC2210
VOUT
4
LED DRIVE
Q110
LED DRIVE
Q110
FL101
VACUUM
FLUORESCENT
DISPLAY
D105
IC103
D106
65
64
VOL_ENCODER(A)
VOL_ENCODER(B)
 ENC_A
 ENC_B
31
32
RV102
MASTER
VOLUME
2
3
RV101
INPUT
SELECTOR
2
3
56 POWER_KEY
S110
_/1
A/D2
40
A/D1
39
S108
S107
S109
MUSIC
GAME
MULTI
STEREO
S103
S102
S101
AFD
MOVIE
NIGHT
MODE
X1101
24MHz
83
82
X1
X0
29
30
5
6
SDA
SCL
SDA
SCL
EEPROM
IC1131
Q101
SWITCHING
TRANSISTOR
RECT
D101-104
-24V
2
3
5
6
8
7
1
4
9
T101
TRANSFORMER
DC-DC CONVERTER
• Abbreviation
 AR  : 
Argentina 
model
  E51 
: Chilean and Peruvian models
  MX 
: Mexican model
  SAF 
: South African model
  SP 
: Singapore model
 TH  : 
Thai 
model
STR-KM3500
STR-KM3500
12
12
•  Circuit Boards Location
DISPLAY board
MAIN board
DIGITAL board
TUNER 
VIDEO STANDBY-SUPPLY board
AC SELECT board
POWER KEY board
TEMP-SENSOR board
HEADPHONE board
For Schematic Diagrams.
Note:
•  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.
THIS  NOTE  IS  COMMON  FOR  PRINTED  WIRING  BOARDS  AND  SCHEMATIC  DIAGRAMS.
(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 
under no-signal (detuned) conditions.
  no mark : TUNER
•  Voltages are taken with a 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 
tolerances.
•  Circled numbers refer to waveforms.
• Signal path.
  J : 
AUDIO 
(DIGITAL)
  F : 
AUDIO 
(ANALOG)
  f : 
TUNER
For Printed Wiring Boards.
Note:
•  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)
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.
• Abbreviation
 AR  : 
Argentina 
model
  E51 
: Chilean and Peruvian models
  MX 
: Mexican model
  SAF  : South African model
  SP 
: Singapore model
 TH  : 
Thai 
model
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