Sony STR-DE925 - Fm Stereo/fm-am Receiver User manual

STR-DE925/V919
US Model
Canadian Model
E Model
PX Model
STR-DE925
Chinese Model
STR-V919
SERVICE MANUAL
— Continued on next page —
SPECIFICATIONS
Dolby Laboratories Licensing Corporation.
“DOLBY”the double-D symbola“AC-3”and“PRO LOGIC”are
trademarks of Dolby Laboratories Licensing Corporation.
FM STEREO FM-AM RECORDER
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
Ver 1.1 2003. 06
9-922-896-12
2003F16-1
© 2003.06
Photo : STR-DE925
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 (8 ohms 20 Hz - 20 kHz, THD 0.09%)
110 W + 110 W
Surround mode (8 ohms at 1 kHz, THD 0.8%)
Front: 110 W/ch
Centera): 110 W
Reara): 110 W/ch
a)Depending on the sound field settings and the source, there may be no
sound output.
Dynamic power output
165 W + 165 W, 8 ohms
230 W + 230 W, 4 ohms
Harmonic distortion at rated output
Less than 0.09% (with sound field, tone, and bass
booster bypassed)
Frequency response
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) 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))
b)78’ IHF
c)Weighted network, input level
Inputs (Digital) 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)
Outputs 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

STR-DE925/V919
— 9 — — 10 —
3-2. BLOCK DIAGRAM – MAIN SECTION –
• Abbreviation
CND :Canadian
EA :Saudi Arabia
MY :Malaysia
SP :Singapore
CH :Chinese
L
60
DATA
FM
AM
FM
75Ω
AM
DO TUNED TMUTE STEREO
DATA CLK CE
L OUT
R OUT
TUNER UNIT
DO TUNED TMUTE STEREO
S DATA
S CLK S LAT
R CHR CH
: FM
: CD
• Signal Path
• RCH is omitted
PHONO
LCD
J301
LINPUT
LOUTPUT
J302
J001
MD/DAT
M OUT
1
J201
MONITOR
J202
J203
TV/LD
DVD
VIDEO 2
VIDEO 1 V1 IN
13
V1 OUT
15
V2 IN
9
V2 OUT
11
TV
3
LD
5
8
VEE
16
VCC
14
SW1
10
SW2
4
SW3
6
SW4
3 2
VIDEO SELECT
IC201
-5V
REG
IC202
-15V
+5V
3
2
1
7
5
10
4
8
11
CONTROL
CE
13
CLK
15
DI
14
AUDIO SELECT
IC301
MUTE
Q302
S LAT S CLK S DATA
31
EQ AMP
IC302 MUTE
Q304
IC407
MUTE
Q354
RY301
RELAY
DRIVE
Q301
IC408
RV401
VOLUME
RV402
BALANCE L
C
W
SL
MUP
DOWN
V-A
81
SYSTEM
CONTROL
IC1201
V-B82
V-E
83
V INH
80
16
61
AUTO STOP
62
STEREO
97
TUNER MUTE
S DATA
S CLK
S LAT
DO
TUNED
STEREO
TMUTE
57
DATA
58
CLOCK
56
LATCH
D
: PHONO
J299
VIDEO
LAUDIO
VIDEO 3
V3 IN
7
1
2
7
9
4
11
CONTROL
CE
13
CLK
15
DI
14
SELECTOR
IC303
S LAT S CLK S DATA
6
8
L
TAPE INPUT
LOUTPUT
Y
V1 O
3
VIDEO 1
INPUT
5
TV 15
1
LD
M O
Y SWITCH
IC252
C
YJ252
VIDEO 1
OUTPUT
Y
C
C
C SWITCH
IC251
C
Y
J251
MONITOR
OUTPUT
TV/LD
J253
J252
J303
V1 O3
13
TV 15
1
V1 I
M O
13 V1 I
C
Y
DVD
5LD
LTV/DBS
L
J305
VIDEO2
INPUT
INPUT
LOUTPUT
L
VIDEO1 OUTPUT
LINPUT
J304
TM301
ANTENNA
4 14 15 13 2 3 1
10
12
6
9
LINPUT
DVD/LD
10
IR LINK
DET
IC001
DVD/LD
IR LINK
DET
IC002
TV/DBS
IR LINK
DET
IC003
MD/DAT
IR LINK
DET
IC004
MD/DAT
(INPUT)
(OUTPUT)
DVD/LD
COAXIAL IC007
14SW1 10SW2 4SW3 6SW4
14SW1 10SW2 4SW3 6SW4
INPUT
OUTPUT
INPUT
INPUT
OUTPUT
OUTPUT
DVD/LD
TV/DBS
INPUT
CH, SP, MY MODEL
DE925
MODEL V919 MODEL
15
14
13
12
4
3
2
1
SELECT
SWITCH
IC1005
5
B
C
A11
10
9
B
C
A
IC1006
76
SWDT
111
A
110
B
109
C
A B
C
78
SCLK
77
XLAT
2
RESET
75
SRDT
DIGITALAUDIO
I/F RECEIVER
IC1101
D IN
47
RESET
11
SWDT
40 SCLK
42 XLAT
41
XO
27
XI
26
X1101
24.576MHz
35
D OUT
29
CLK
34
BCK
36
LRCK
30
ERROR
38
SRDT
X1301
49.152MHz
IC1102
IC1102
IC1305 IC1305
IC1305 13 10
CLOCK
DIVIDE
IC1403
IC1305
IC1102
IC1108
MEMORY
IC1302
A0-7
D0-7 LATCH
IC1303
IC1304
A8-15
D0-7
EMRD
5EXTMEM
21
CLK
30
SDATA1
22 SDATA2
27
MCLK
44
SCK
43 SCLK1
25 SCLK2
28
RCLK
42 LRCLK1
26 LRCLK2
29
DOLBY
DIGITALAUDIO DECODER
IC1301
41
AUDATA0 40
AUDATA1 39
AUDATA2
D0-7
SCCLK
7
16
SCCLK SCD IN
6
CS
18
RESET
36
15
SCDOUT
17
CS
20
RESET
20
INTREQ 19
SCDOUT
19
INTREQ
18
SCDIN
Q1204 Q1205
IC1202
67
D1201
14
ANALOG/DIG
ERROR
A0-7
D0-7
SRAM
IC1402
SIA
117 SIB
118 SIC
119
XWE
74 XOE
70
25 32
16
20
23
25
.HD0
HD7
D0-7
AD0 AD7 21
XHDWR
35
HA0
AUDIO DSP
IC1401
HA0
15
XHDWR
9
XHDRD
10
XHDCS
14
XRST
26
22
XHDRD
24
XHDCS
23
HRDY
36
XRST
13
HRDY 5
SOD
37
SOD
6
CDTO
IC1202 IC1202
Q1206
Q1207
5
CDTI
4
CCLK
3
CS
7
PD
108
RY DIRECT PASS
2
SOA
CLK1
99 LRCK
115 BCK0
113 3
SOB 4
SOC
27
L OUT1
LIN-
29
AUDIO CODEC
IC1103
CDTO
44
CDTI
43
CCLK
42
CS
41
PD
17
SDTO
9
MCLK1
39 BCLK
4LRCK
5
SDTI 1
6SDTI 2
7SDTI 3
8
LIN+
30
IC304 IC1104 IC1104
23
L OUT3
IN
14
DATA
9CLK
8LAT
10
15
OUT
DATA
CLK
LAT
IC414
IN
3
DATA
9CLK
8LAT
10
2
OUT
DATA
CLK
LAT
IN
14 15
OUT
IC407 IC410
IC410
IN
14
DATA
9CLK
8LAT
10
15
OUT
DATA
CLK
LAT
IC406
MUTE
Q303
IC409
IC405
24
R OUT3
25
L OUT2
IC1104
IC1105
IC1105
IC1106
VOL CONT
IC416
VOL CONT
IC415
VOL CONT
LED
DRIVE
Q120
LED VOL
MUTE
CONT
Q1201
85
FUN MUTE
Q1202
Q1203
U DATA
52
DISP DATA 55
DISP CLK 51
DISP MR
53SREQ
10
SOTO 9
SINO 87
MD2 89
MD0
90RESET
U CLOCK
U MREQ
U SREQ
SOTO
SINO
MD2
MD0
U REST
B
A
107
RY POWER RY POWER
48
EV STB
50
EV CLK
49
EV DATA
LAT
CLK
DATA
84
AC MUTE
79
PROTETOR
106
RY HP
101
RY FRONT A
102
RY FRONT B
103
RY CENTER
105
RY WOOFER
104
RY REAR
AC MUTE
PROTECTOR
RY HP
RY FRONT A
RY FRONT B
RY CENTER
RY WOOFER
RY REAR
C
92
XO
93
XI
X1201
4MHz
64
STOP STOP
: DIGITAL
S-VIDEO

STR-DE925/V919
— 11 — — 12 —
3-3. BLOCK DIAGRAM – POWER SECTION –
• Abbreviation
CND :Canadian
EA :Saudi Arabia
MY :Malaysia
SP :Singapore
CH :Chinese
RELAY
DRIVE
Q601
LIMITER
Q504
14
5
15
6
1
2
3
VEE
VCC
IN
MUT
+VE
NF
-VE
13 VCC
POWER AMP(L)
IC501
L
+B
-B
LIMITER
Q505
BOOSTER
Q506
BOOSTER
Q507 CUR DET Q508
PROTECTOR
Q509,510
Q511
LIMITER
Q604
9
15 12
11
VEE
IN
+VE
NF
-VE
13 VCC
POWER AMP(C/W)
IC601
C
+B
-B
LIMITER
Q605
BOOSTER
Q606
BOOSTER
Q607 CUR DET Q608
PROTECTOR
Q609,610
Q611
LIMITER
Q704
MUTE
Q501,503
14
5
15
6
1
2
3
VEE
VCC
IN
MUT
+VE
NF
-VE
13 VCC
POWER AMP(SL)
IC701
SL
+B
-B
LIMITER
Q705
BOOSTER
Q706
BOOSTER
Q707 CUR DET Q708
8
RY602
RELAY
DRIVE
Q546
RY501
RELAY
DRIVE
Q596
RY502
RELAY
DRIVE
Q645
RY601
RELAY
DRIVE
Q749
RY701
RELAY
DRIVE
Q544
RY503
RELAY
DRIVE
Q901
RY901
J501
C
S(L)
S(R)
R CH
R CH WIRELESS
REAR
SPEAKER
CNJ701
SURROUND
SPEAKER
WOOFER
J701
PHONES
TM701
FRONT
SPEAKER
TM501
R CH
R CH
POWER
CONT
IC901 58
3
6
DELAY
+B SW
Q902
SWITCH
Q747,748
D801
SWITCH
Q614,618
INV SW
Q617
SWITCH
Q613,616
SWITCH
Q612,615
PROTECTOR
Q547-549
F2
F1
+5.6V
F801
F802
D802-805
+B
-B
IMPEDANCE
SELECTOR
8
4
S501
F901
D901-904
CNJ901
CNP901
AC IN
L
R
:FM
:CD
D
• Signal Path
• RCH is omitted
IN
W6
14 VCC
2+VE 3-VE
1
+18V
REG
IC702
3
F803
F804
1
+3.3V
REG
3
3
+5V
REG
1
IC809 +24V
-24V
1
5V
REG
3
IC809
IC801
IC802
CNJ901
T902
MODE CONTROL
IC102
STOP
A
AC MUTE
PROTECTOR
REMOTO
CONTROL
RECEIVER
IC101
26
SIRCS Q101
RESET
Q105
77
RESET
POWER
S131
POWER KEY
74
F2 F1
16
JW925
MY, SP, CH
MODEL MY, SP
MODEL
47
STOP
I/R
CONT
IC181
I/O
BUFFER
Q182
RESET
Q181
11
14
12
5
33
2
LAT
98
15 16
X102
7.28MHz
I/R
DET
IC180 LED
DRIVE
Q183,184 D184-186
URESET
TV/DBS
MONITOR
VIDEO 1
VIDEO 2 S-LINK
J204
J256
J255
J257
J258
LEVEL
CONTROL
Q257,258
BUFFER
Q253
11 4
LEVEL
CONTROL
Q255,256
LEVEL
CONTROL
Q254
3
2
5
67
1
IC254
SWITCH
Q251,252
ST-I/O
IC251
US,CND MODEL
1 MUT
D1202
D1203
2
-15V
REG
IC402
3
3
+15V
REG
IC401
1
1
+12V
REG
IC403
3
3
+5V
REG
IC404
1
-15V
+15V
TU +12V
TU +5V
+32V
REG
+32V
Q801
D808
F805
1
+3.3V
REG
3
IC803
D5V
D3.3V
D3.3V
T901
F904
JW903
F903
US,CND
MODEL US, CND, E, EA, CH, PX
MODEL
E, EA, PX MODEL
VOLTAGE
SELECTOR
91
LED ON/OFF
DOUT
3
RY HP
RY FRONT A
FRONT B
RY CENTER
RY WOOFER
RY REAR
58
URESET
B
ABUS A1 IN
63
I/O
BUFFER
Q180
ABUS OUT
67
FLOURESCENT
INDICATOR TUBE
FL101
29
DIN
26
LAT
34
CLK
24
CLR
4
LS
29
CLK
5
CL
30
DIN FL DAT
24
FL CLK
21
FL LAT
24
FL CLEAR
25
SPEAKER
SWITCH
FUNCTION
KEY
SP B
73
SPA
72
AD KEY6
44
MUTING
S102
6FUNCTION
KEY
AD KEY1
38
S106,110,114,118
S122,126,128,130
FUNCTION
KEY
AD KEY2
39
S105,109,113,117
S121,125,127,129
FUNCTION
KEY
AD KEY3
40
S104,108,112
S116,120,124
FUNCTION
KEY
AD KEY4
41
S103,107,111
S115,119,122
FUNCTION
KEY
AD KEY5
43
S140-145,147 S132,133
S135-139,146 S134
49
MD0
87
LED BASS B
89
LED SOUND FIELD
92
LED DOLBY DIGITAL
LED
DRIVE
D100,108
D119,122
Q107,108
Q119,122
14
LED SUR
15
LED EQ
16
LED INDEX
LED
DRIVE
D104-106
Q103,104
Q106
90
LED MUTE
LED
DRIVE
D101
Q102
5
LED TV/DBS
4
LED DVD/LD
3
LED V3
LED
DRIVE
D111-113
D116-118
Q111-113
Q118-116
8
LED CD
9
LED TUNER
10
LED PHONO
7
LED MD/DAT
6
LED TAPE
LED
DRIVE
D114,115
Q114,115
2
LED V2
1
LED V1
LED
DRIVE
D109,110
Q109,110
VIDEO 2
94
VIDEO 1
93
M BUS
96
TV
95
IC254
IC254
UP
55
DOWN
56
LED VOL
88
8
7
3
2
MOTOR
DRIVE
IC251
IC106
UP
DOWN
LED VOL
B
51
MD2
20
SINO
19
SOTO
61
UDATA
62
UCLOCK
60
UMREQ
59
USEQ
USREQ
UMREQ
UCLOCK
UDATA
SOTO
SINO
MD2
MD0
82
XO
83
XI
X101
VS901
IC105IC104
FL DRIVE FL DRIVE
RY POWER
S-LINK
EXCEPT
E, EA, PX
MODEL

STR-DE925/V919
— 15 — — 16 —
3-5. SCHEMATIC DIAGRAM — AMP SECTION —
, PX , PX
, PX

STR-DE925/V919
— 19 — — 20 —
3-7. SCHEMATIC DIAGRAM — VIDEO SECTION — • See pages 61 for IC Block Diagrams.
(Page27)
(Page31)

STR-DE925/V919
— 23 — — 24 —
3-9. SCHEMATIC DIAGRAM — AUDIO SECTION —
(Page28)
(Page28)
(Page32)
(Page27)
(Page27)
(Page47)
(V919)
(DE925)
(DE925)
(V919)

STR-DE925/V919
— 27 — — 28 —
3-11. SCHEMATIC DIAGRAM — INPUT SECTION — • See page 61 for IC Block Diagrams.
(Page23) (Page23) (Page23)
(Page49)
(Page15)
(Page35)
(Page36)
(Page16)
(Page24) (Page20)

STR-DE925/V919
— 31 — — 32 —
3-13. SCHEMATIC DIAGRAM — DISPLAY SECTION — • See page 8 for Waveform. • See page 51 for IC Pin Function Description. • See page 61 for IC Block Diagrams.

STR-DE925/V919
— 35 — — 36 —
3-15. SCHEMATIC DIAGRAM — SPEAKER SECTION —
(Page28)
(Page15)
(Page15)
(Page16)
(Page28)
(Page47)
(Page16)

STR-DE925/V919
— 37 — — 38 —
3-16. PRINTEDWIRING BOARD — POWER SECTION — • See page 7 for Circuit Boards Location.
12
A
B
C
D
E
F
G
H
I
J
345678910111213
Ref. No. Location
• Semiconductor
Location
D808 C-3
D901 D-4
D902 D-4
D903 D-4
D904 C-4
D905 C-4
D906 C-4
D907 G-8
IC801 E-2
IC802 F-3
IC803 G-3
IC901 F-4
Q901 D-4
Q902 G-4
T
O
P
1-669-998- 11
(11)
1-670-005-
11
(11)
T902
1
4
14
E
E
58
41
13
13
11
36
AC BOARD
REG BOARD
AC
IN
US,CND
MODEL
EXCEPT
E,EA,PX MODEL
US,CND,E,EA,CH,PX MODEL
US,CND
E,EA,PX
MODEL
MY,SP MODEL
E,EA,PX MODEL
E, EA, PX MODEL
EXCEPT
E, EA, PX MODEL
MY,SP,CH
MODEL
MY,SP MODEL
E,EA,PX MODEL
CNJ901
AC OUTLET CNJ901 AC OUTLET
VOLTAGE SELECTOR
16
EB900
EB901
T901
POWER
TRANSFORMER
1
2
3
1
2
3
4
5
6
(Page14)
(Page14)
(Page43)
E,EA,PX MODEL

STR-DE925/V919
— 39 — — 40 —
3-17. SCHEMATIC DIAGRAM — POWER SECTION — • See page 61 for IC Block Diagrams.
(Page16)
(Page16)
(Page49)
E, EA, PX MODEL
E, EA, PX MODEL
E, EA, PX MODEL
, PX MODEL
E, EA, PX
MODEL
EXCEPT
E, EA, PX
MODEL
E, EA, PX MODEL

STR-DE925/V919
— 45 — — 46 —
3-20. SCHEMATIC DIAGRAM — DIGITAL SECTION (1/3)— • See page 51 for IC Pin Functions. • See page 61 for IC Block Diagrams.
(Page47)
(Page48) (Page49) (Page49)

STR-DE925/V919
— 47 — — 48 —
3-21. SCHEMATIC DIAGRAM — DIGITAL SECTION (2/3)— • See page 51 for IC Pin Functions. • See page 8 for Waveforms.
(Page45) (Page46)
(Page49)
(Page32)
(Page49)
(Page15)
(Page31)(Page36)
(Page24)

STR-DE925/V919
3-22. SCHEMATIC DIAGRAM — DIGITAL SECTION (3/3)— • See page 51 for IC Pin Functions. • See page 8 for Waveforms. • See page 61 for IC Block Diagrams.
— 49 — — 50 —
(Page46)
(Page46)
(Page48)
(Page39) (Page27)
!