Sony STRV-919 Service manual
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
BASS BOOST
+6 dB at 70 Hz
Sampling Frequency
48 kHz
EQ
BASS:
100 Hz ~ 1.0 kHz (21 steps)
MID:
500 Hz ~ 5.0 kHz (21 steps)
TREBLE:
1.0 kHz ~ 10 kHz (21 steps)
Gain levels:
±10 dB, 1 dB step
FM tuner section
Tuning range
87.5 - 108.0 MHz
Antenna terminals
75 ohms, unbalanced
Sensitivity
Mono: 18.3 dBf, 4.5 µV
Stereo: 38.3 dBf, 45 µV
Usable sensitivity
11.2 dBf, 2 µV (IHF)
S/N
Mono: 76 dB
Stereo: 70 dB
Harmonic distortion at 1 kHz
Mono: 0.3 %
Stereo: 0.5 %
Separation
45 dB at 1 kHz
Frequency response
30 Hz - 15 kHz +0.5/-2 dB
Selectivity
60 dB at 400 kHz
AM tuner section
Tuning range
With 10-kHz tuning scale:
530 - 1710 kHz
530 - 1610 kHz
With 9-kHz tuning scale:
531 - 1710 kHz
531 - 1602 kHz
Antenna
Loop antenna
Usable sensitivity
50 dB/m (at 1,000 kHz or 999 kHz)
S/N
54 dB (at 50 mV/m)
Harmonic distortion
0.5% (50 mV/m, 400 kHz)
d)
(US, Canadian)
d)
(Except US, Canadian)
d)
(US, Canadian)
d)
(Except US, Canadian)
Selectivity
At 9 kHz: 35 dB
At 10 kHz: 40 dB
d)You can change the AM tuning scale to 9 kHz. After tuning in any AM
station, turn off the receiver. Hold down the TUNING + button and
press the 1/u button. All preset stations will be erased when you
change the tuning scale. To reset the scale to 10 kHz, repeat the
procedure.
Video section
Input
Outputs
1 Vp-p 75 ohms
1 Vp-p 75 ohms
General
System
Tuner section:
PLL quartz-locked digital synthesizer system
Preamplifier section:
Low- noise NF type equalizer
Power amplifier section:
Pure-complementary SEPP
Power requirements
US and Canadian models:
120 V AC, 60 Hz
E, PX, Saudi Arabia models :
120/220/240 V AC selectable, 50/60 Hz
Singapore, Chinese, Malaysia models :
220 - 230 V AC, 50/60 Hz
Power consumption
US, Singapore, Chinese, Malaysia: 290 W
Canadian: 480 VA
E, PX, Saudi Arabia: 310W
AC outlets
Dimensions
2 switched, total 100 W
430 × 370 × 157.5 mm
(17 × 145/8 × 61/4 in.)
including projecting parts and controls
Mass (Approx.)
10.5 kg (23 lb 3 oz)
Supplied accessories
• FM wire antenna (1)
• AM loop antenna (1)
• Remote commander RM-LJ301 (remote) (1)
• LR6 (size-AA) alkaline batteries (3)
• Audio/video/control S connecting cord (1)
• Control S connecting cord (1)
Design and specifications are subject to change without notice.
— 2 —
SAFETY CHECK-OUT
TABLE OF CONTENTS
After correcting the original service problem, perform the
following safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.
LEAKAGE
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester , such as the Simpson 229 or RCA
WT -540A. Follow the manufacturers’ instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter . The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples of
a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
To Exposed Metal
Parts on Set
AC
0.15
µ
F 1.5k
Ω
voltmeter
(0.75V)
1. GENERAL ······································································ 4
2. TEST MODE····························································6
3. DIAGRAMS
3-1. Circuit Boards Location ····················································· 7
3-2. Block Diagram — Main Section — ··································· 9
3-3. Block Diagram — Power Section — ······························· 11
3-4. Printed Wiring Board — AMP Section — ······················· 13
3-5. Schematic Diagram — AMP Section — ·························· 15
3-6. Printed Wiring Board — Video Section — ······················ 17
3-7. Schematic Diagram — Video Section — ························· 19
3-8. Printed Wiring Board —AUDIO Section —···················· 21
3-9. Schematic Diagram — AUDIO Section —······················ 23
3-10. Printed Wiring Board — Input Section — ······················· 25
3-11. Schematic Diagram — Input Section — ·························· 27
3-12. Printed Wiring Board — Display Section — ··················· 29
3-13. Schematic Diagram — Display Section — ······················ 31
3-14. Printed Wiring Board — SPEAKER Section —·············· 33
3-15. Schematic Diagram — SPEAKER Section —················· 35
3-16. Printed Wiring Board — Power Section — ····················· 37
3-17. Schematic Diagram — Power Section — ························ 39
3-18. Printed Wiring Board — DIGATAL (SIDE A) Section —41
3-19. Printed Wiring Board — DIGATAL (SIDE B) Section —43
3-20. Schematic Diagram — DIGITAL Section (1/3) —·········· 45
3-21. Schematic Diagram — DIGITAL Section (2/3) —·········· 47
3-22. Schematic Diagram — DIGITAL Section (2/3) — ········· 49
3-23. IC Pin Function Description ············································ 51
3-24. IC Block Diagrams ··························································· 61
4. EXPLODED VIEWS
4-1. Front Panel Section ·························································· 64
4-2. Chassis Section································································· 65
5. ELECTRICAL PARTS LIST ··································· 66
Earth Ground
Fig. A. Using an AC v oltmeter to check A C leakage.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH
MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY .
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS P AR UNE MARQUE ! SUR LES
DIAGRAMMES SCHÉMA TIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
— 3 —
LOCATION AND FUNCTION OF CONTROLS
[FRONT PANEL]
SECTION 1
GENERAL
#ª
#•
#¶
#§
#∞
#¢
1
#£
#™
2
#¡
@ª¿
#º
4567890
3
1 1/u (POWER) button
2 MULTI CURSOR CONTROL
3 SURROUND, EQUALIZER, INDEX indicators
4 DIRECT TUNING button
5 VIDEO 1 button
6 MULTI CHANNEL DECODING indicator
7 TV/DBS button (DE925)
7 TV/LD button (V919)
8 SOUND FIELD GENRE button
9 SOUND FIELD MODE button
0 SOUND FIELD, EQ, BASS BOOST indicators
!¡ MASTER VOLUME control
!™ BALANCE control
!£ VIDEO 3 INPUT
!¢ MUTING button
!∞ SOUND FIELD ON/OFF button
!§ BASS BOOST button
!¶ EQ ON/OFF button
!• INPUT MODE button
!ª PHONO button
@º DVD/LD
@¡
@£
@∞
@™
@¢
@§@¶@•
Photo : STR-V919
@¡ TUNER button
@™ VIDEO 3 button
@£ CD button
@¢ VIDEO 2 button
@∞ MD/DAT button
@§ TAPE button
@¶ Numeric buttons
@• SHIFT button
@ª DISPLAY button
#º MEMORY button
#¡ FM/AM button
#™ FM MODE button
#£ SLEEP button
#¢ PHONES jack
#∞ TUNING +, – buttons
#§ SPEAKERS A, B switche
#¶ PRESET TUNING +, – buttons
#• SET UP button
#ª CURSOR MODE button
@º
!ª
!•
!¡
!™
!¶
!£!¢!∞!§
— 4 —
[REAR PANEL]
2345 6 7 8 9 0 !¡ !™
1
@º !ª
@¡
1 DIGITAL
2 ANTENNA (FM/AM)
3 TV/DBS (DE925)
3 TV/LD (V919)
4 DVD/LD (DE925)
4 DVD (V919)
5 VIDEO 2
6 VIDEO 1
7 MONITOR
8 S-LINK (US,Canadian model)
8 S-LINK (MY,SP,CH model)
9 WOOFER
0 SPEAKERS (REAR)
!•
!¶
!§
Photo : STR-V919
!¡ SPEAKER (CENTER)
!™ WIRELESS REAR SPEAKER
!£ IMPEDANCE SELECTOR
!¢ AC power cord
!∞ AC OUTLET
!§ FRONT SPEAKERS (A/B)
!¶ TAPE/MD
!• SPEAKERS (FRONT)
!ª CD
@º PHONO
@¡ y SIGNAL GND
Abbriviation
!£
MY: Malaysia
SP: Singapore
CH: Chinese
!¢
!∞
— 5 —
SECTION 2
TEST MODE
FLUORESCENT INDICATOR TUBE TEST MODE
* All fluorescent segments are tested. When this test is activated,
all segments turn on at the same time, then each segment turns on
one after another.
* Procedure:
While depressing the SET UP and the SOUND FIELD MODE
buttons simultaneously, press the power [1/u] button to turn on
the main power. All segments turn on at the same time, then each
segment turns on one after another.
FACTORY SET MODE
* All preset contents are reset to the default setting.
* Procedure:
While depressing the SET UP and the SOUND FIELD ON/OFF
buttons simultaneously, press the power [1/u] button to turn on
the main power. The message FACTORY SET appears and the
present contents are reset to the default values.
ALL CLEAR MODE
* All preset contents are cleared when this mode is activated. Use
this mode before returning the product to clients upon completion
of repair.
* Procedure:
While depressing the DISPLAY and the SOUND FIELD ON/
OFF buttons simultaneously, press the power [ 1/u] button to turn
on the main power. The machine enters the DEMO mode.DEMO
mode: Wait a while, then the demonstration starts. If the power
[1/u] button is pressed often the demonstration has started, the
power is turned off, and the demonstration resumes if the power
[1/u] button is pressed again.
ALL CLEAR mode; If the power [1/u] button is pressed often
the machine enters the DEMO mode, but before the demonstration
starts, the display is turned off. Press [1/u] again. No response is
returned. The press [1/u] again. The preset data is cleared and
the machine enters the normal power-on state.
SOUND FIELD CLEAR MODE
* The preset sound field is cleared when this mode is activated.
Use this mode before returning the product to clients upon
completion of repair.
* Procedure:
While depressing the SOUND FIELD ON/OFF button, press the
power [1/u] button to turn on the main power. The message
SURR CLEAR! appears and initialization is performed.
AM CHANNEL STEP 9 kHz/10 kHz
SELECTION MODE
* Either the 9 kHz step or 10 kHz step can be selected for the AM
channel step.
* Procedure:
Set the FUNCTION to AM. Turn off the main power.
While depressing the TUNING+ button or the PRESET TUNING
+ button, press the power [1/u] button to turn on the main power.
Either the message AM 9kHz STEP or AM 10kHz STEP appears.
Select the desired step.
DSP TEST MODE
* Procedure:
While depressing the SET UP and the SOUND FIELD GENRE
buttons simultaneously, press the power [1/u] button to turn on
the main power. The message DSP NO ERROR or DSP ERROR.
DTS MODE
* Procedure:
While depressing the MUL TI CURSOR CONTROL UP [>] and
DOWN [.] buttons simultaneously , press the power [1/u] button
to turn on the main power. The message ATTENUATE OFF or
ATTENUATE ON.
— 6 —
SECTION 3
)
DIAGRAMS
STR-DE925/V919
3-1. CIRCUIT BOARDS LOCATION
DISPLAY board
SP SW board
H.P board
LED board
SW board
• Abbreviation
CND :Canadian
MY :Malaysia
SP :Singapore
CH :Chinese
AC board
L.B board
F-VIDEO board
REG board
SP board
BALANCE board
AMPLIFIER board
JOINT board
VOLUME board
REAR AMP board
S-LINK board (US,CND)
S-VIDEO board (MY,SP,CH
VIDEO board
TUNER board
D.IN/OUT board
DIGITAL board
AUDIO board
INPUT board
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/
specified.
• % : indicates tolerance.
• 2 : nonflammable resistor.
• 1 : fusible resistor.
• C : panel designation.
Note:
The components identified by
mark ! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
No mark : FM
• Voltages are taken with a V OM (Input impedance 10 MΩ).
Voltage v ariations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
F : FM
J : CD
c : DIGITAL
I : PHONO
• Abbreviation
CND :Canadian
EA :Saudi Arabia
MY :Malaysia
SP :Singapore
CH :Chinese
W or less unless otherwise
4
Note:
Les composants identifiés par
une marque ! sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• ® : Through hole.
• b : Pattern from the side which enables seeing.
• Waveform
1 IC1201 (™ (XO)
4.0Vp-p
4MHz
2 IC1101 @¶ (X OUT)
5.5Vp-p
24.576MHz
3 IC1101 @ª (CLK OUT)
5.4Vp-p
12.288MHz
4 IC102 *™ (XO)
— 7 — — 8 —
3.0Vp-p
4.0MHz
5 IC181 !§ (X OUT)
3.5Vp-p
7.28MHz
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
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
S-VIDEO
Y SWITCH
IC252
V1 O
TV
V1 I
C SWITCH
IC251
V1 O3
TV
LD
V1 I
M O
S DATA
VCC
VEE
SW1
SW2
SW3
SW4
L OUT
R OUT
DATA
CLK
CE
S CLK
S LAT
16
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
XLAT
2
RESET
J305
LTV/DBS
L
LOUTPUT
J304
LINPUT
L
LINPUT
DIGITAL AUDIO
I/F RECEIVER
47
D IN
27
XO
26
XI
40
SWDT
42
SCLK
41
XLAT
11
RESET
IC1101
D OUT
LRCK
ERROR
SRDT
CLK
BCK
1
2
6
7
9
10
35
29
34
36
30
38
SELECTOR
CONTROL
14
75
67
SRDT
IC303
4
8
11
CE13CLK15DI
S LAT
S CLK
S DATA
X1301
49.152MHz
IC1305 IC1305
D1201
14
ERROR
IC1305
Q1203
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 —
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
PROTECTOR
RY FRONT A
RY CENTER
RY WOOFER
RY POWER
S-LINK
L
C
W
SL
AC MUTE
RY HP
FRONT B
RY REAR
STOP
URESET
USREQ
UMREQ
UCLOCK
UDATA
SOTO
DOWN
LED VOL
Q251,252
SWITCH
3
2
5
6
SINO
IC254
IC254
IC254
MD2
MD0
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
MUT
-VE
IC601
+VE
VEE
IN
-VE
IN
IC701
VCC
+VE
VEE
IN
MUT
-VE
49
51
20
19
MD0
MD2
SINO
FUNCTION
KEY
S106,110,114,118
S122,126,128,130
NF
NF
NF
SOTO
AD KEY1
38
2
5
3
12
9
11
2+VE
3-VE
2
5
3
61
62
UDATA
S105,109,113,117
S121,125,127,129
UCLOCK
LIMITER
Q504
LIMITER
Q505
LIMITER
Q604
LIMITER
Q605
LIMITER
Q704
LIMITER
Q705
60
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
DIN FL DAT
I/O
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
-B
R CH
8
4
L
R
C
S(L)
S(R)
SWITCH
Q612,615
Q101
Q182
I/O
BUFFER
J701
PHONES
SURROUND
J501
WOOFER
CNJ701
WIRELESS
REAR
SPEAKER
5
11
12
TM501
FRONT
SPEAKER
TM701
SPEAKER
SWITCH
Q613,616
REMOTO
CONTROL
RECEIVER
RESET
Q105
I/R
CONT
IC181
15 16
X102
7.28MHz
IC101
• RCH is omitted
• Signal Path
:FM
:CD
• Abbreviation
CND :Canadian
EA :Saudi Arabia
MY :Malaysia
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
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 —
STR-DE925/V919
3-4. PRINTED WIRING BOARD — AMP SECTION —
• Semiconductor Location
Ref. No. Location
D501 E-6
D502 E-6
D503 E-6
D504 E-6
D505 B-4
D506 B-4
D545 B-3
D546 E-3
D547 D-12
D548 D-12
D549 D-12
D551 E-11
D552 E-11
D553 E-11
D554 E-11
D555 C-4
D556 B-4
D601 E-8
D602 E-8
D603 E-8
D604 E-9
D608 C-11
D647 D-3
D648 E-4
D801 C-8
D802 D-10
D803 C-9
D804 D-10
D805 D-10
D806 B-10
D807 D-8
IC809 C-12
Q504 E-6
Q505 E-6
Q506 E-5
Q507 F-7
Q508 E-7
Q509 B-4
Q510 B-4
Q511 B-4
Q546 B-11
Q547 D-12
Q548 D-12
Q549 D-12
Q554 E-11
Q555 E-11
Q556 E-10
Q557 E-12
Q558 E-12
Q559 C-4
Q560 B-4
Q561 B-4
Q596 B-11
Q601 B-11
Q604 E-9
Q605 E-8
Q606 E-8
Q607 E-9
Q608 E-9
Q612 E-4
Q613 D-4
Q614 D-4
Q615 E-3
Q616 D-3
Q617 D-3
Q618 D-3
Q801 D-8
A
B
C
D
E
F
G
H
I
12
AMPLIFIER BOARD
TM501
FRONT
SPEAKERS
B
A
L
A
B
B
A
R
A
B
J
• See page 7 for Circuit Boards Location.
345678910111213
(Page 34) (Page 34)
E
E
E
EE
1
EE
1
E
6
E
EE
EE
(Page 37)
MQ
+
∼
51
11
BCE BCE
BCE BCE
Q506 Q505 Q507 Q606 Q605 Q607 Q556 Q555 Q557
∼
−
E
2
1
BCE BCE
O
(Page 26)
(Page 37) (Page 43)
7
3
1
BCE
BCE BCE
X
(Page 33)
H.P BOARD
JOINT BOARD
11
16
1
(Page 25)
R
1
11
11
1-670-027-
(11)
J701
PHONES
(Page 33)
NLPI
EE
E
1
3
1
1
EEEEEE
1
3
3
EE
E
11
1
3
1-670-006-
1-670-025-
11
(11)
(11)
— 13 — — 14 —
3-5. SCHEMATIC DIAGRAM — AMP SECTION —
STR-DE925/V919
, PX
, PX
, PX
— 15 — — 16 —
STR-DE925/V919
3-6. PRINTED WIRING BOARD — VIDEO SECTION —
12
3 4 5 6 7 8 9 1011121314
VIDEO BOARD
A
(V919)
TV/LD
(DE925)
TV/DBS
VIDEO IN VIDEO IN
B
C
D
14
DVD
DVD/LD
1
(V919)
(DE925)
VIDEO 2
VIDEO OUT VIDEO IN
8
916
3
1
• See page 7 for Circuit Boards Location.
VIDEO 1
VIDEO OUT VIDEO IN
MY,SY,CH
MODEL
MONITOR
VIDEO OUT
1-670-003-
S-LINK
CTRL A1
11
(11)
F-VIDEO BOARD
VIDEO 3 INPUT
VIDEO AUDIO
LR
1-670-012-
11
15
(11)
E
US,CND
MODEL
C
(Page 29)
J
(Page 25)
F
(US,CND MODEL)
S-LINK BOARD
VIDEO 2 VIDEO 1
CTRL S OUT
CTRL S OUT
MONITOR
CTRL S IN
(MY,SY,CH MODEL)
S-VIDEO BOARD
G
TV/
DBS
CTRL S
H
58
E
E
E
EEE
EE
18
18
• Semiconductor
Location
1
4
814
916
I
16
17
1-670-013-
11
(11)
J
MONITOR VIDEO 1 DVD TV/LD
916
1-670-004-
11
(11)
Ref. No. Location
D201 C-2
D202 C-2
D251 I-11
D252 I-11
IC201 C-2
IC202 C-4
IC251 H-13
IC251 H-5
IC252 H-12
IC254 H-3
— 17 — — 18 —
Q251 H-7
Q252 H-6
Q253 H-2
Q254 G-6
Q255 G-6
Q256 G-6
Q257 H-4
Q258 H-4
STR-DE925/V919
3-7. SCHEMATIC DIAGRAM — VIDEO SECTION —
• See pages 61 for IC Block Diagrams.
(Page31)
(Page27)
— 19 — — 20 —
STR-DE925/V919
3-8. PRINTED WIRING BOARD — AUDIO SECTION —
• Semiconductor
Location
Ref. No. Location
IC303 G-8
IC408 C-5
IC409 C-5
IC410 B-5
A
12
B
C
D
E
• See page 7 for Circuit Boards Location.
345678910111213
(Page26)
E
VOLUME
BOARD
110
MASTER VOLUME
RR108
(Page25)
K
TUNER BOARD
18
1
11
1
S
18
(Page43)
D
(Page26)
11
18
11
1-670-011-
1
4
(11)
1
5
1-670-000-
1
11
(11)
F
G
H
A
(Page29)
(Page25)
TM301
F
AUDIO BOARD
BALANCE
11
1-670-015-
(11)
BALANCE BOARD
I
16
L
L
R
L
R
16
30
115
1-670-001-
11
L
R
L
R
L
R
(11)
R
TV/DBS
TV/LD
(DE925)
(V919)
DVD
J305J304
(DE925)
(V919)
— 22—
J
INPUT
VIDEO 1
OUTPUT
INPUT
VIDEO 2
OUTPUT
DVD/LD
— 21 —
3-9. SCHEMATIC DIAGRAM — AUDIO SECTION —
(Page28)
STR-DE925/V919
(Page28)
(V919)
(DE925)
(V919)
(DE925)
(Page32)
(Page27)
(Page47)
(Page27)
— 23 —
— 24 —
STR-DE925/V919
3-10. PRINTED WIRING BOARD — INPUT SECTION — • See page 7 for Circuit Boards Location.
• Semiconductor
Location
Ref. No. Location
D301 F-10
IC301 C-4
IC302 D-4
IC304 E-6
IC401 C-12
IC402 B--12
IC403 D-12
IC404 E-4
IC405 E-12
IC406 D-12
IC407 D-12
IC414 B-11
IC415 C-11
IC416 D-11
IC501 C-9
IC601 D-7
IC701 C-7
Q301 F-11
Q302 E-11
Q303 E-11
Q304 D-11
Q352 E-11
Q353 D-10
Q354 D-11
Q501 C-10
Q503 C-10
A
B
C
D
E
F
12
INPUT BOARD
L
IN
REC
OUT
IN
REC
OUT
IN
IN
R
L
R
L
R
L
R
L
R
L
R
16
TAPE
MD/DAT
CD
PHONO
345678910111213
1
1
30
4
1
5
8
15
16
3
1
15
3
1
F
(Page22)
(Page22) (Page18)
(Page14)
R H
13
1
1
1
1
3
18
VK
(Page34)
(Page22)
(Page14)
ID
18
6
1
15
15
E
15
14
E
16
18
16
1
18
16
EEE
E
E
E
E
9
9
9
12
18
18
1
3
1
3
3
1
18
3
1
10
1
1-670-026-
11
GJ
(Page43)(Page34)
(11)
E
(Page21)
G
— 25 —
— 26 —
STR-DE925/V919
3-11. SCHEMATIC DIAGRAM — INPUT SECTION —
• See page 61 for IC Block Diagrams.
(Page23)
(Page49)
(Page23)
(Page23)
(Page15)
(Page16)
(Page35)
(Page36)
(Page24)
(Page20)
— 27 — — 28 —
STR-DE925/V919
3-12. PRINTED WIRING BOARD — DISPLAY SECTION —
• Semiconductor
Location
Ref. No. Location
D100 H-2
D101 E-2
D102 B-13
D103 B-9
D104 C-12
D105 C-12
D106 C-12
D108 C-3
D109 J-6
D110 J-7
D111 J-7
D112 J-8
D113 J-9
D114 I-6
D115 I-7
D116 I-7
D117 I-8
D118 I-9
D119 D-3
D120 I-13
D121 I-14
D122 C-3
D180 B-3
D181 D-13
D182 E-11
D183 E-11
D184 C-11
D185 C-12
D186 C-11
A
B
C
D
E
12
DISPLAY BOARD
(Page17)
C
(Page21)
A
9
CNS107
14
MUTING
1
3456789101112131415
(Page43)
B
(SOUND FIELD)
(EQ)
(BASS BOOST)
• See page 7 for Circuit Boards Location.
E
E
E
E
E
E
1
E
E
13
80
81
51 50
1100
(Page43)
Z
12
E
31
30
E,EA,MY,SP,CH
MODEL
EXCEPT CH
MODEL
17
EEE
64
EE
EEEEEEEE
(SURROUND)
(EQUALIZER)
(INDEX)
EE
22
23
33
34
44
12
DISPLAY
11
1
PRESET
TUNING
MULTI
CURSOR
CONTROL
E
E
1
5
TUNING
IC101 C-4
IC102 D-6
IC103 C-1
IC104 D-8
IC105 C-7
IC180 E-12
IC181 E-13
Q101 C-4
Q102 B-4
Q103 B-11
Q104 B-11
Q105 C-4
Q106 B-11
Q107 B-6
Q108 B-4
Q109 B-11
Q110 B-11
Q111 B-12
Q112 B-12
Q113 B-12
Q114 B-12
Q115 B-12
Q116 B-12
Q117 B-13
Q118 B-13
Q119 B-4
Q120 B-4
Q122 B-3
Q180 B-3
Q181 C-14
Q182 C-14
Q183 C-13
Q184 C-13
F
G
H
K
L.B
BOARD
1-670-014-
11
(11)
441
41
MY,SP,CH
MODEL
CH MODEL
CH MODEL
EXCEPT MY,SP,CH
MODEL
41 41
MEMORY
FM/AM FM MODE SLEEP
1-670-008-
11
2 13
LED BOARD
(MULTI CHANNEL DECODING)
2
1
1-670-007-
SW BOARD
I
SHIFT
11
(11)
1 2 3 4
MD/DAT CD TUNER PHONO
TV/DBSDVD/LDVIDEO 3VIDEO 2VIDEO 1
14
INPUT
MODE
EQ
ON/OFF
SOUND FIELD
GENRE MODE
14 14
6
TAPE
0987
BASS
BOOST
14
SOUND
FIELD
ON/OFF
SP SW BOARD
B A A+BOFF
SPEAKERS
SET UP
CURSOR MODE
(11)
5
1
J
16
DIRECT
TUNING
1
2 3 4 5
1-670-009-
11
(11)
1-670-010-
11
(11)
— 29 — — 30 —
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
— 31 — — 32 —
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