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Model
STR-DN840
Pages
100
Size
6.81 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
str-dn840.pdf
Date
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STR-DN840
17
SECTION  4
FM  TUNER  CHECK
FM  AUTO  STOP  CHECK
signal 
generator
set
Procedure:
1.  Turn on the set.
2.  Input the following signal from signal generator to FM antenna 
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: 
Use 75 ohm coaxial cable to connect signal generator and the
   
set. You cannot use video cable for checking.
   
Use signal generator 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.
When the station signal is received in good condition, automatic 
scanning stops.
STR-DN840
18
SECTION  5
DIAGRAMS
• Circuit Boards Location
• Abbreviation
  CND  : Canadian model
 TW  : 
Taiwan 
model
DCDC board
MAIN board
NETWORK module
DIGITAL board
TUNER1 board
DISPLAY board
STANDBY board
POWER KEY board
HEADPHONE board
FRONT JACK PWB board
BLUETOOTH module
(TW, US, CND)
Ver. 1.1
STR-DN840
STR-DN840
19
19
5-1.  BLOCK  DIAGRAM  – ANALOG AUDIO Section –
Ver. 1.1
4
J401
J402 (1/2)
J100
CN103
CN104
CN102
AUTO CAL
MIC
J402 (2/2)
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 (1/2)
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
INL6
BT LOut
INR6
BT ROut
LINE AMP
IC420
53
2,3,5,6
1
54
7
R-ch
R-ch
BT_R
BT_L
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, UK, TW, AUS
MX, US, CND
‡6LJQDOSDWK
           : AUDIO
           : TUNER
           : MIC
‡5FKLVRPLWWHGGXHWR
VDPHDV/FK
DIGITAL
SECTION
(Page 20)
DIGITAL
SECTION
(Page 20)
A
AMP
SECTION
(Page 21)
B
C
ANALOG VIDEO/USB
SECTION
(Page 22)
D
RELAY
DRIVER 
Q301
AUDIO
SUBWOOFER OUT
R
L
TW, US, CND
AUDIO
SA-CD/CD IN
R
L
AUDIO
SAT/CATV IN
R
L
AUDIO
TV IN
R
L
AUDIO
VIDEO IN
R
L
STR-DN840
STR-DN840
20
20
5-2.  BLOCK  DIAGRAM  – DIGITAL Section –
95
94
5
6
E2P_SDA
E2P_SCL
DQ0-DQ15
147-150,152,154-155,157,
161-163,165-168,170
2,4-5,7-8,10-1
1,13,42,
44-45,47-48,50-51,53
6,9-13,16-17, 20-21,26,30
23-26,29-34,
22,35
ADDR0-ADDR11
ADDR17-ADDR18
20-21
32,35
A0-A11
4,7,12
2,5,14
3-5
4,7,9,12
3,6,10,13
6-9
3,6,10,13
1,5,13
3,6,1
1
1,2,4
10-12
10-1
1
55-56
27-28
1-2
1,7
+3.3V
A+5V
+3.3V REG.
IC2002
DATA0-DATA15
BA0-BA1
ANALOG AUDIO
SECTION
(Page 19)
A
L-IN
R-ch
R-CH
J2100
X2500
25MHz
CEC DATA
SWITCH
Q2102 ~ Q2105
44
45
73
94
86
X2102
24.576MHz
CLKIN
SBL/SBR_OUT
SL/SR_OUT
C/SW1_OUT
L/R_OUT
24
XTAL2 25
BCLK_OUT 98
LRCLK_OUT 99
MOSI 38
SPICLK 40
MISO 39
DSP_CS 43
31
32
1
OUT
5
2
1
Y
B
A
DIGITAL OPTICAL RECEIVER
IC2352
DIGITAL AUDIO
INTERFACE RECEIVER
IC2107
WAVE SHAPER
IC2105
DSP
IC2502
58
63
XOUT
RXIN6
OPTICAL TV  RXIN1
10 MPIN4
60 RXIN4
61 HDMI SPDIF  RXIN3
1
OUT
DIGITAL OPTICAL RECEIVER
IC2351
62 OPTICAL SAT  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
74
MPOUT2 20
16
22
103
100
96
C/SW_IN
95
MPOUT3 21
SBL/SBR_IN
101
D/A CONVERTER
IC2104
DATA2
SL OUT
R-CH
19
20
DATA1
C OUT
22
SW OUT
21
ADINL
ADINR
12
VOUT7
VOUT8 15
16
SBL OUT
11
EEPROM
IC2102
BINARY
COUNTER
IC2111
MUTING
IC2112
SD-RAM
IC2501
D2104
56 36
HDMI_CECIN
HDMI_CECOUT
DIR FSRA
TE
CKA
Q4B
88
SCL
SDA
4
RESET
IC2101
VOUT
‡6LJQDOSDWK
           : AUDIO
           : AUDIO (DIGITAL)
‡5FKLVRPLWWHGGXHWR
VDPHDV/FK
5
2
3
6
MCKOUT 13
MCLK_IN
92
LRCKOUT 15
LRCLK_IN
97
BCKOUT 14
BCLK_IN
75
ANALOG
AUDIO
SECTION
(Page 19)
C
MUTEB
XMCK 30
24
B
Y
SELECT
2
5
A
1
6
MPIN5
11
MUTE
3
1
2
CEC
MUTE
PROTECTION
Q2100
MUTE SELECTOR
IC2108
9
3Y
SIGNAL SELECTOR
IC2114
SIGNAL SELECTOR
IC2113
D/A CONVERTER
IC2001
SIGNAL SELECTOR
IC2000
D/A CONVERTER
IC2003
SIGNAL SELECTOR
IC2004
DIR FUNCTION SELECT
IC400 (2/2)
8
1
14
DIR_SIGNAL
19
DIR_XST
ATE
18
DIGITAL VIDEO
SECTION
(Page 23)
E
SERIAL
FLASH
IC2503
SCK
6
SO
2
CE#
1
SI
5
COAXIAL
SA-CD/CD
(ASSIGNABLE) IN
IN 1
(SAT/CATV
ASSIGNABLE)
IN 2
(TV ASSIGNABLE)
OPTICAL
16
12
2
3
3
2
3
4
2
4
4
3
5 2A
6 SMUTE
3
SDTI
8
1
VDD
5 VOUT
Ver. 1.2
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