DOWNLOAD Sony STR-DH740 (serv.man2) Service Manual ↓ Size: 5.51 MB | Pages: 86 in PDF or view online for FREE

Model
STR-DH740 (serv.man2)
Pages
86
Size
5.51 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
str-dh740-sm2.pdf
Date
PREV: Sony STR-DH740 Service Manual

Sony STR-DH740 (serv.man2) Service Manual ▷ View online

13
STR-DH740
SECTION  4
FM  TUNER  CHECK
FM AUTO STOP CHECK
generator
OUT (75 
ȍ)
set
Procedure:
1.  Turn on the set.
2.  Input the following signal from Signal Generator to FM an-
tenna input directly.
*  Carrier Frequency: A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation 
: 75 kHz
Modulation  : 1 kHz
ANT input  : 35 dBu (EMF)
Note:
Please use 75 ohm “coaxial cable” to connect SG and the set. You 
cannot use video cable for checking.
Please use SG whose output impedance is 75 ohm.
3.  Set to FM tuner function and scan the input FM signal with 
automatic scanning.
4. Confi rm that input Frequency of A, B and C are detected and 
automatic scanning stops.
The stop of automatic scanning means “The station signal is 
received in good condition.”
STR-DH740
14
SECTION  5
DIAGRAMS
• Circuit Boards Location
DCDC board
MAIN board
DIGITAL board
TUNER1 board
DISPLAY board
STANDBY board
POWER KEY board
HEADPHONE board
FRONT JACK PWB board
STR-DH740
STR-DH740
15
15
5-1.  BLOCK  DIAGRAM  – ANALOG AUDIO Section –
J401
J402 (1/2)
J100
CN103
CN104
CN102
AUTO CAL
MIC
J402 (2/2)
AUDIO
SA-CD/CD IN
R
L
AUDIO
SUBWOOFER OUT
R
L
AUDIO
SAT/CATV IN
R
L
AUDIO
TV IN
R
L
AUDIO
VIDEO IN
R
L
12
TUN_RDS_SIGNAL
AM
FM RECEIVER
IC101
ROUT
FM
75ȍCOAXIAL
ANTENNA
ARF1
ARF2
SBLIN
-2
OUT2
SBRIN
-1
OUT1
INL9
INR9
INL7
INR7
INL11
INR11
ADCROUT
ADCLOUT
SWOUT
COUT
SROUT
SLOUT
SBROUT
SBLOUT
FROUT
FLOUT
LINE AMP
IC412
66
6
2
1
67
7
R-ch
R-ch
R-ch
SL
SBL
FL
L-IN
INL3
INL4
INR4
INR3
DIR FUNCTION SELECT
IC400
SBL OUT
SLIN
-2
OUT2
SRIN
-1
OUT1
LINE AMP
IC411
68
6
2
1
69
7
R-ch
R-ch
R-ch
SL OUT
CIN
-2
OUT2
SWIN
-1
OUT1
LINE AMP
IC413
70
6
2
1
71
7
C OUT
SW OUT
INL1
-2
OUT2
INR1
-1
OUT1
LINE AMP
IC410
63
6
2
1
64
7
R-ch
R-ch
R-ch
FL OUT
SYSTEM
CONTROL
IC2100 (1/6)
11
TUNER_MOSI
10
TUNER_CLK
EV
O
L_
D
ATA
D
ATA
CLK
EVOL_CLK
3
2
ZONE2_PREOUT_SW_R
Y
89
57
58
10
11
59
60
75
14
13
20
19
15
C
18
R-ch
R-ch
R-ch
R-ch
17
43
44
51
52
47
48
16
76
AUDIO AMP
IC100
R-ch
R-ch
R-ch
R-ch
R-ch
R-ch
R-ch
INL10
INR10
45
46
R-ch
R-ch
R-ch
7
5
1
3
14
LOUT 15
DA 13
CK 10
IIC/RDSI 8
6
7
FRF1
4
RY301
AEP, TW, AUS
MX, US, CND
‡6LJQDOSDWK
           : AUDIO
           : TUNER
           : MIC
‡5FKLVRPLWWHGGXHWR
VDPHDV/FK
DIGITAL
SECTION
(Page 16)
DIGITAL
SECTION
(Page 16)
A
AMP
SECTION
(Page 17)
B
C
RELAY
DRIVER 
Q301
Ver. 1.2
STR-DH740
STR-DH740
16
16
5-2.  BLOCK  DIAGRAM  – DIGITAL Section –
95
94
5
6
E2P_DATA
E2P_SCL
ANALOG AUDIO
SECTION
(Page 15)
A
ANALOG VIDEO/USB
SECTION
(Page 18)
D
L-IN
R-ch
USB
R-CH
J2100
X2500
25MHz
CEC DATA
SWITCH
Q2102 ~ Q2105
44
59
45
41
56
48
X2102
24.576MHz
CLKIN
SBL/SBR_OUT
SL/SR_OUT
C/SW1_OUT
L/R_OUT
12
XTAL 13
BCLK_OUT 60
LRCLK_OUT 61
MOSI 19
SPICLK 21
MISO 20
DSP_CS 24
31
32
1
OUT
DIGITAL OPTICAL
RECEIVER
IC2352
DIGITAL AUDIO
INTERFACE RECEIVER
IC2107
WAVE SHAPER
IC2105
DSP
IC2502
58
63
XOUT
RXIN6
RXIN1
1
OUT
DIGITAL OPTICAL
RECEIVER
IC2351
62 RXIN2
XIN
SYSTEM
CONTROL
IC2100 (2/6)
4
5
16 38
15
DAC_IIC_SDL
DAC_IIC_SCA
INITX
SCK
3
MC/SCL/DEMP
MD/SDA/MUTE
DATA4
DATA3
FL OUT
R-CH
VOUT1
VOUT2
VOUT5
VOUT6
VOUT3
VOUT4
13
26
27
6
7 BCK
LRCK
8
MPOUT1
MPOUT4
DATAOUT
19
SL/SR_IN
A/D_2CH
DIR_IN
L/R_IN
40
MPOUT2 20
16
22
65
63
57
C/SW_IN
58
MPOUT3 21
SBL/SBR_IN
62
D/A CONVERTER
IC2104
DATA2
SL OUT
R-CH
19
20
DATA1
C OUT
22
SW OUT
21
ADINL
ADINR
RXIN5
12
VOUT7
VOUT8 15
16
SBL OUT
11
EEPROM
IC2102
BINARY
COUNTER
IC2111
MUTING
IC2112
D2104
56 36
HDMI_CECIN
HDMI_CECOUT
DIR FSRA
TE
CKA
Q4B
50
SCL
SDA
4
RESET
IC2101
VOUT
‡6LJQDOSDWK
           : AUDIO
           : AUDIO (DIGITAL)
‡5FKLVRPLWWHGGXHWR
VDPHDV/FK
5
2
3
6
MCKOUT 13
MCLK_IN
54
LRCKOUT 15
LRCLK_IN
59
BCKOUT 14
BCLK_IN
42
ANALOG AUDIO
SECTION
(Page 15)
C
MUTEB
XMCK 30
24
B
Y
SELECT
2
5
A
1
6
MPIN4
10
SP_SERIES
MUTE
CEC
MUTE
PROTECTION
Q2100
8
1
14
DIR_SIGNAL
19
DIR_XST
ATE
18
DIGITAL VIDEO
SECTION
(Page 19)
E
SERIAL FLASH
IC2503
SCK
6
SO
2
CE#
1
SI
5
3 - 9
60, 61
9
COAXIAL
SA-CD/CD
(ASSIGNABLE) IN
IN 1
(SAT/CATV
ASSIGNABLE)
IN 2
(TV ASSIGNABLE)
OPTICAL
Ver. 1.1
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