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STR-DE925/V919
SERVICE MANUAL
Ver 1.1 2003. 06
Photo : STR-DE925
Dolby Laboratories Licensing Corporation.
“DOLBY” the double-D symbol a “AC-3” and “PRO LOGIC” are
trademarks of Dolby Laboratories Licensing Corporation.
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
With 8 ohm loads, both channels driven, from 20 - 20,000 Hz; rated
110 watts per channel minimum RMS power, with no more than
0.09% total harmonic distortion from 250 milliwatts to rated output
(USA model only).
Amplifier section
POWER OUTPUT
Stereo mode
Surround mode
a)Depending on the sound field settings and the source, there may be no
sound output.
Dynamic power output
Harmonic distortion at rated output
Frequency response
(8 ohms 20 Hz - 20 kHz, THD 0.09%)
110 W + 110 W
(8 ohms at 1 kHz, THD 0.8%)
Front: 110 W/ch
Centera): 110 W
Reara): 110 W/ch
165 W + 165 W, 8 ohms
230 W + 230 W, 4 ohms
Less than 0.09% (with sound field, tone, and bass
booster bypassed)
PHONO: RIAA
equalization curve
±0.5 dB
CD, TAPE, MD/DAT, TAPE/MD, DVD/LD, TV/DBS,
VIDEO 1, 2, and VIDEO 3 :
10 Hz - 50 kHz +0.5/-2 dB (with sound field, tone,
and bass booster bypassed)
Inputs (Analog)
b)78’ IHF
c)Weighted network, input level
Inputs (Digital)
Outputs
US Model
Canadian Model
E Model
PX Model
STR-DE925
Chinese Model
STR-V919
PHONO:
Sensitivity: 2.5 mV
Impedance: 50 kilohms
S/Nb): 75 dB (A, 2.5 mVc))
CD, DVD/LD, TAPE, MD/DAT, TAPE/MD, TV/DBS,
VIDEO 1, 2, and VIDEO 3 :
Sensitivity: 150 mV
Impedance: 50 kilohms
S/Nb): 82 dB (A, 150 mVc))
DVD/LD (coaxial):
Sensitivity: -
Impedance: 75 ohms
S/N: 100 dB (A, 20 kHz LPF)
DVD/LD, TV/DBS, MD/DAT (Optical):
Sensitivity: -
Impedance: -
S/N: 100 dB (A, 20 kHz LPF)
TAPE, MD/DAT, TAPE/MD, (REC OUT); VIDEO 1, 2
(AUDIO OUT):
Voltage: 150 mV
Impedance: 10 kilohms
WOOFER:
Voltage: 2 V
Impedance: 1 kilohms
PHONES:
Accepts low - and high-impedance headphones
— Continued on next page —
FM STEREO FM-AM RECORDER
9-922-896-12
2003F16-1
© 2003.06
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
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STR-DE925/V919
3-2. BLOCK DIAGRAM – MAIN SECTION –
DE925
MODEL
TV/DBS
DVD/LD
MD/DAT
TAPE
VIDEO 3
MONITOR
MODEL
PHONO
INPUT
VIDEO
VIDEO 1
VIDEO 2
V919
TV/LD
DVD
CH, SP, MY MODEL
DVD/LD
TV/DBS
MD/DAT
(INPUT)
MD/DAT
(OUTPUT)
COAXIAL
DVD/LD
OUTPUT
INPUT
OUTPUT
INPUT
OUTPUT
INPUT
INPUT
TV/LD
J253
DVD
J252
VIDEO 1
INPUT
FM
75Ω
AM
L
LCD
LINPUT
LOUTPUT
L
LOUTPUT
LAUDIO
TM301
ANTENNA
J301
J302
J303
IC001
IR LINK
DET
IC002
IR LINK
DET
IC003
IR LINK
DET
IC004
IR LINK
DET
J001
J299
J201
J202
J203
Y
C
Y
C
Y
C
TUNER UNIT
FM
AM
DO
4 14 15 13 2 3 1
DO
TUNED
IC007
7
1
13
15
9
11
3
5
S-VIDEO
3
5
13
5
13
16
TUNED
TMUTE
STEREO
TMUTE
STEREO
VIDEO SELECT
IC201
V3 IN
M OUT
V1 IN
V1 OUT
V2 IN
V2 OUT
TV
LD
Y SWITCH
IC252
V1 O
TV
V1 I
C SWITCH
IC251
V1 O3
TV
LD
V1 I
M O
S DATA
VCC
SW1
SW2
SW3
SW4
L OUT
R OUT
DATA
CLK
CE
S CLK
S LAT
16
VEE
8
14
10
4
6
15
14SW1
10SW2
4SW3
6SW4
1LDM O
15
14SW1
10SW2
4SW3
6SW4
1
10
12
R CHR CH
EQ AMP
IC302
31
15
14
SELECT
13
SWITCH
12
IC1005
4
3
2
1
IC202
-5V
3 2
REG
AUDIO SELECT
IC301
3
2
1
7
6
5
10
9
CONTROL
14
S DATA
5
11
A
10
B
9
C
IC1006
A
B
C
+5V
-15V
DO
TUNED
STEREO
60
61
62
DATA
V-A
81
AUTO STOP
V-B82
V-E
83
V INH
80
Y
J252
VIDEO 1
OUTPUT
C
Y
J251
MONITOR
OUTPUT
C
CE
CLK15DI
13
S LAT
S CLK
TMUTE
97
STEREO
TUNER MUTE
4
DVD/LD
VIDEO2
8
11
A
S LAT
S CLK
S DATA
57
58
56
111A110B109
DATA
LATCH
CLOCK
OUTPUT
VIDEO1
X1101
24.576MHz
B
C
76
78
C
SCLK
SWDT
INPUT
INPUT
77
J305
LTV/DBS
L
LOUTPUT
J304
LINPUT
L
LINPUT
DIGITAL AUDIO
I/F RECEIVER
IC1101
47
D IN
27
XO
26
XI
40
SWDT
42
SCLK
41
XLAT
11
RESET
2
XLAT
RESET
D OUT
LRCK
ERROR
SRDT
CLK
BCK
SELECTOR
1
2
6
7
9
10
CONTROL
35
29
34
36
30
38
75
SRDT
IC303
CE13CLK15DI
14
S LAT
S CLK
S DATA
X1301
49.152MHz
IC1305 IC1305
D1201
67
ERROR
4
8
11
IC1305
Q1203
14
ANALOG/DIG
IC1108
IC1102
IC1403
CLOCK
13 10
DIVIDE
MEMORY
D0-7
IC1302
IC1305
IC1102
IC1102
A0-7
A8-15
SYSTEM
CONTROL
IC1201
LATCH
IC1303
IC1304
DOLBY
DIGITAL AUDIO DECODER
IC1301
22
SDATA 1
27
SDATA 2
44
MCLK
43
SCK
25
SCLK1
28
SCLK2
42
RCLK
26
LRCLK1
29
LRCLK2
30
CLK
D0-7
5
EMRD
21
EXTMEM
SCCLK
SCD IN
7
6CS18
IC1202
16
15
SCCLK
SCDOUT
AUDATA0
AUDATA1
AUDATA2
SCDOUT
INTREQ
17CS20
36
41
40
39
19
20
RESET
RESET
Q1204
19
18
INTREQ
SCDIN
SRAM
IC1402
Q1205
25 32
AD0 AD7
D0-7
D0-7
A0-7
D0-7
35
HA0
IC304 IC1104 IC1104
AUDIO DSP
IC1401
SOA
113
BCK0
SOB
115
LRCK
SOC
99
CLK1
117
SIA
118
SIB
119
SIC
74
XWE
70
XOE
16
20
HD0
.
23
HD7
25
SOD
15
HA0
HRDY
XHDRD10XHDCS14XRST
XHDWR
9
26
IC1202
IC1202
21
22
24
36
XRST
XHDCS
XHDRD
XHDWR
BALANCE
RV402
79
106
PROTETOR
VOLUME
RV401
IC408
IC410
IC410
IC409
101
102
103
105
104
RY HP
RY FRONT A
RY FRONT B
RY CENTER
RY WOOFER
RY REAR
DISP DATA
DISP CLK
RY POWER
DATA
CLK
LAT
DATA
CLK
LAT
DATA
CLK
LAT
DISP MR
STOP
SOTO
SINO
MD2
MD0
• RCH is omitted
• Signal Path
107
52
55
51
53SREQ
90RESET
64
10
9
87
89
VOL CONT
IC414
14
IN
9
DATA
8
CLK
10
LAT
VOL CONT
IC416
3
IN
14
IN
9
DATA
8
CLK
10
LAT
VOL CONT
IC415
14
IN
9
DATA
8
CLK
10
LAT
M
: FM
: PHONO
OUT
OUT
OUT
OUT
Q120
LED
DRIVE
L
15
C
2
A
W
15
SL
15
UP
DOWN
B
LED VOL
AC MUTE
PROTECTOR
RY HP
RY FRONT A
RY FRONT B
RY CENTER
RY WOOFER
RY REAR
U DATA
U CLOCK
U MREQ
U SREQ
U REST
RY POWER
STOP
SOTO
SINO
MD2
MD0
C
D
AUDIO CODEC
IC1103
30
LIN+
29
LIN-
9
SDTO
39
MCLK1
4
BCLK
5
LRCK
6
2
3
4
5
13
Q1206
23
37
HRDY
SOD
7
8
Q1207
SDTI 1
SDTI 2
SDTI 3
CDTO
44
6
CDTO
CDTI43CCLK42CS41PD
5
CDTI
L OUT1
L OUT3
R OUT3
L OUT2
4
CCLK
17
3CS7PD108
IC1104
27
IC1105
23
IC1105
24
IC1106
25
Q301
RELAY
DRIVE
85
RY DIRECT PASS
Q1201
MUTE
CONT
Q1202
FUN MUTE
XI
X1201
4MHz
RY301
92XO93
IC405
MUTE
Q302
IC407
MUTE
Q304
IC407
MUTE
Q354
IC406
MUTE
Q303
LAT
CLK
DATA
48
50
49
84
EV STB
EV CLK
EV DATA
AC MUTE
: CD
: DIGITAL
• Abbreviation
CND :Canadian
EA :Saudi Arabia
MY :Malaysia
SP :Singapore
CH :Chinese
— 9 — — 10 —
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3-3. BLOCK DIAGRAM – POWER SECTION –
STR-DE925/V919
US,CND MODEL
J258
TV/DBS
J257
MONITOR
J255
VIDEO 1
J256
VIDEO 2
16
A
B
D
B
Q255,256
LEVEL
CONTROL
Q257,258
LEVEL
CONTROL
Q254
LEVEL
CONTROL
SL
PROTECTOR
RY FRONT A
RY CENTER
RY WOOFER
RY POWER
S-LINK
L
C
W
AC MUTE
RY HP
FRONT B
RY REAR
STOP
URESET
USREQ
UMREQ
UCLOCK
UDATA
SOTO
SINO
MD2
MD0
DOWN
LED VOL
Q251,252
SWITCH
3
2
IC254
IC254
IC254
5
6
UP
Q253
BUFFER
1
7
8
7
11
IC106
MOTOR
DRIVE
ST-I/O
IC251
IC251
MUTE
Q501,503
3
2
POWER AMP(L)
IC501
13 VCC
+B
VCC
+VE
14
15
-B
6
1
POWER AMP(C/W)
13 VCC
+B
14 VCC
15
-B
8
1 MUT
6
POWER AMP(SL)
13 VCC
+B
14
15
-B
6
1
55
UP
56
DOWN
88
LED VOL
M BUS96TV
VIDEO 2
VIDEO 1
94
93
95
6
4
VEE
IN
NF
MUT
-VE
IC601
+VE
VEE
IN
NF
-VE
IN
IC701
VCC
+VE
VEE
IN
NF
MUT
-VE
49
51
20
19
MD0
MD2
SINO
38
FUNCTION
KEY
S106,110,114,118
S122,126,128,130
2
5
3
12
9
11
2+VE
3-VE
2
5
3
SOTO
AD KEY1
61
62
60
UDATA
UCLOCK
S105,109,113,117
S121,125,127,129
LIMITER
Q504
LIMITER
Q505
LIMITER
Q604
LIMITER
Q605
LIMITER
Q704
LIMITER
Q705
UMREQ
39
FUNCTION
KEY
59
USEQ
AD KEY2
BOOSTER
Q506
BOOSTER
Q507
BOOSTER
Q606
BOOSTER
Q607
BOOSTER
Q706
BOOSTER
Q707
AD KEY3
40
FUNCTION
KEY
S104,108,112
S116,120,124
CUR DET
Q508
CUR DET
Q608
CUR DET
Q708
AD KEY4
41
FUNCTION
KEY
S103,107,111
S115,119,122
PROTECTOR
Q547-549
D109,110
LED
DRIVE
Q109,110
2
1
LED V2
LED V1
MODE CONTROL
IC102
S102
MUTING
PROTECTOR
Q509,510
PROTECTOR
Q609,610
7
AD KEY5
43
LED MD/DAT
D111-113
D116-118
DRIVE
Q111-113
Q118-116
4
3
LED V3
LED DVD/LD
44
FUNCTION
KEY
S135-139,146
D114,115
LED
DRIVE
Q114,115
6
LED TAPE
FUNCTION
KEY
S140-145,147 S132,133
LED
5
9
10
LED TV/DBS
LED PHONO
AD KEY6
Q511
Q611
8
LED CD
LED TUNER
72
SPEAKER
SWITCH
S134
D101
LED
DRIVE
Q102
90
SP B73SP A
LED MUTE
POWER KEY
74
S131
POWER
D104-106
LED
DRIVE
Q103,104
Q106
16
LED INDEX
F2
15
FL DRIVE FL DRIVE
RELAY
DRIVE
Q601
14
LED EQ
LED SUR
FL CLK21FL LAT24FL CLEAR
25
26
34
24
LAT
CLK
DIN
FLOURESCENT
INDICATOR TUBE
RY602
D1202
D1203
D100,108
D119,122
LED
DRIVE
Q107,108
Q119,122
87
89
92
LED SOUND FIELD
LED DOLBY DIGITAL
CLR
29
FL101
91
LED BASS B
LED ON/OFF
4LS29
CLK
3
DOUT
IC105IC104
5CL30
RELAY
DRIVE
Q546
RELAY
DRIVE
Q596
24
F1
RY501
RY502
RY601
RELAY
DRIVE
Q645
RY503
RELAY
DRIVE
Q544
RY701
RELAY
DRIVE
Q749
X101
82XO83
XI
ABUS OUT
67
Q180
I/O
DIN FL DAT
BUFFER
SIRCS
URESET
RESET
STOP
ABUS A1 IN
LAT
98
63
R CH
S501
IMPEDANCE
SELECTOR
26
58
77
47
R CH
R CH
+B
R CH
J701
PHONES
• RCH is omitted
L
R
TM501
FRONT
SPEAKER
• Signal Path
:FM
:CD
• Abbreviation
CND :Canadian
C
S(L)
S(R)
-B
SWITCH
Q612,615
8
4
Q101
Q182
I/O
BUFFER
SURROUND
J501
WOOFER
CNJ701
WIRELESS
REAR
SPEAKER
5
11
12
TM701
SPEAKER
SWITCH
Q613,616
REMOTO
CONTROL
RECEIVER
RESET
Q105
I/R
CONT
IC181
15 16
X102
7.28MHz
IC101
IC404
+5V
3
+15V
-15V
+32V
+24V
-24V
D5V
D3.3V
D3.3V
DELAY
+B SW
Q902
POWER
CONT
IC901
1
3
6
D184-186
58
J204
S-LINK
1
IC403
+12V
3
IC401
+15V
1
IC402
3
SWITCH
Q747,748
Q801
+32V
REG
3
3
3
REG
REG
REG
-15V
REG
IC801
5V
REG
IC802
+3.3V
REG
IC803
+3.3V
REG
D901-904
1
3
2
F801
D801
F802
F803
D802-805
F804
D808
1
1
1
RELAY
DRIVE
Q901
F805
F2
F1
RY901
T902
TU +5V
TU +12V
IC702
+18V
3
REG
SWITCH
Q614,618
INV SW
Q617
IC809
IC809
+5V
3
1
REG
+5.6V
RESET
14
Q181
Q183,184
33
IC180
I/R
LED
DET
2
DRIVE
EA :Saudi Arabia
MY :Malaysia
SP :Singapore
CH :Chinese
T901
EXCEPT
E, EA, PX
MODEL
F901
US,CND
MODEL
JW925
E, EA, PX MODEL
VOLTAGE
SELECTOR
F904
JW903
MY, SP, CH
MODEL
F903
US, CND, E, EA, CH, PX
MODEL
VS901
MY, SP
MODEL
CNJ901
CNJ901
CNP901
AC IN
— 11 — — 12 —
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3-5. SCHEMATIC DIAGRAM — AMP SECTION —
STR-DE925/V919
, PX
, PX
, PX
— 15 — — 16 —
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STR-DE925/V919
3-7. SCHEMATIC DIAGRAM — VIDEO SECTION —
• See pages 61 for IC Block Diagrams.
(Page31)
(Page27)
— 19 — — 20 —