Sony STR-WX5 Service manual
STR-WX5
SERVICE MANUAL
STR-WX5 is the tuner and amplifier
section in MHC-WX5.
SPECIFICATIONS
Amplifier section
The following measured at AC 120, 220, 240V 50/60Hz
DIN power output (Rated) (FRONT)
120 + 120W (6 Ω at 1kHz DIN)
Continuous RMS power output (Reference)
150 + 150 W
(6 Ω at 1kHz, 10% THD)
Inputs MD/VIDEO 1 IN (phono jacks): voltage
450/250mV, impedance 47kΩ
AV INPUT AUDIO (phono jacks):
voltage 250mV, impedance 47kΩ
MIX MIC (phone jack): sensitivity 1mV,
impedance 10kΩ
Output MD/VIDEO 1 OUT (phono jacks):
voltage 450/250mV, impedance 1kΩ
PHONES (stereo phone jack): accepts
headphones of 8Ω or more.
FRONT SPEAKER:
accepts impedance of 6 to 16Ω
REAR SPEAKER:
accepts impedance of 16Ω
SUPER WOOFER:
Voltage 1V, impedance 1kΩ
Video section
Inputs AV INPUT VIDEO (phono jack): 1Vp-p,
75Ω
Outputs MONITOR OUT (phono jack): 1Vp-p,
75Ω
Tuner section
FM stereo, FM/AM superheterodyne tuner
E Model
Australian Model
Tourist Model
FM tuner section
Tuning range 87.5 – 108.0MHz
Antenna terminals 75Ω unbalanced
Intermediate frequency 10.7MHz
AM tuner section
Tuning range
Latin America models: 530 – 1,710kHz (10kHz step)
531 – 1,710kHz (9kHz step)
Middle Easten models: 531 – 1,602kHz(with the MW interval set at
9kHz)
5.95 – 17.90MHz (with the SW interval set
at 5kHz)
Australian, Israel, and Thai models :
531 – 1,602kHz(with the AM tuning
interval set at 9kHz)
530 – 1,710kHz (with the AM tuning
interval set at 10kHz)
Other models: MW :
531 – 1,602kHz(with the MW tuning
interval set at 9kHz)
530 – 1,710kHz (with the MW tuning
interval set at 10kHz)
SW :
5.95 – 17.90 MHz (with the SW tuning
interval set at 5kHz)
Intermediate frequency 450kHz
Antenna AM loop antenna
External antenna terminal
— Continued on next page —
MICROFILM
FM STEREO/FM-AM RECEIVER
TABLE OF CONTENTS
General
Power requirements
Australian model: 240V AC, 50/60Hz
Israel and Thailand models:
220V AC, 50/60Hz
Other models: 120V or 220V or 230 – 240, 50/60Hz
Adjustable with voltage selector
Power consumption 290W
Dimensions (w/h/d) Approx. 288 × 205 × 375mm
Mass Approx. 7.8kg
Design and specifications are subject to change without notice.
1. GENERAL ........................................................................... 3
2. DISASSEMBLY
2-1. Sliding Panel Assembly ······················································ 9
2-2. Level Slider ········································································9
3. SERVICE MODE .............................................................. 5
4. DIAGRAMS
4-1. Circuit Boards Location ·················································· 9
4-2. Block Diagrams
• Main Section ································································ 10
• Power Section ······························································ 11
4-3. Printed Wiring Board Main Section ························· 12
4-4. Schematic Diagram Main (1/2) Section ························· 13
4-5. Schematic Diagram Main (2/2) Section ························· 14
4-6. Schematic Diagram AV/Mic Section ······························ 15
4-7. Printed Wiring Board AV/Mic Section ··························· 15
4-8. Schematic Diagram Power Amp Section ······················· 16
4-9. Printed Wiring Board Power Amp Section····················· 17
4-10. Schematic Diagram Display Section ······························ 18
4-11. Printed Wiring Board Display Section ··························· 19
4-12. Schematic Diagram Sliding Panel Section ····················· 20
4-13. Printed Wiring Board Sliding Panel Section ·················· 21
4-14. Printed Wiring Board Trans Section······························· 22
4-15. Schematic Diagram Trans Section ································· 23
4-16. IC Block Diagrams ··························································· 24
4-17. IC Pin Function ································································ 26
5. EXPLODED VIEWS
6-1. Case and Sliding Panel Section ........................................ 29
6-2. Front Panel Section .......................................................... 30
6-3. Slide Mechanism Section ................................................. 31
6-4. Circuit Boards and Back Panel Section............................ 32
7. ELECTRICAL PARTS LIST ........................................ 33
MODEL IDENTIFICATION
— BACK PANEL —
LABEL MODEL NUMBER
No.
MODEL PART No.
EXCEPT Israel, Thai model 4-900-848-0π
Israel, Thai model 4-900-848-1π
2
SECTION 1
GENERAL
Front Panel
1
ra
r;
el
ek
ej
234567
8
9
0
qa
qs
qd
qf
qg
EXCEPT JE
wfwgwhwjwkwle;
egeh
rf rg rh rj rk rl t; ta ts td tf tgth tjtk tl
1 1/u (P ower) button
2 SLIDING SENSOR window
3 MOVIE indicator
4 MUSIC indicator
5 GAME indicator
6 PLACE indicator
7 P FILE indicator
8 TUNER/BAND button
9 STEREO/MONO button
0 MEMORY button
qa AUTO indicator
qs OPEN/CLOSE button
qd KARAOKE PON/MPX button
qf MIC LEVEL knob
qg MIX MIC jack (EXCEPT JE model)
MIC 1 jack (JE model)
qh GROOVE button and indicator
qj VOLUME knob
qk EFFECT ON/OFF button and indicator
ql P FILE button
w; PLACE button
wa GAME button
ws MUSIC button
wd MOVIE button
wf ENTER/NEXT button and indicator
wg ) + button and indicator
wh = C MULTI JOG STATION c
+ dial
wj 0 – button and indicator
wk CD EDIT button
wl CD PLAY MODE button
e; CD REPEAT button
ea NON-STOP button and indicator
es FLASH button
ed LOOP button
ef DBFB button
eg DSP REVERB button and indicator
eh DSP DELAY button and indicator
ej PHONES jack
ek CLOCK/TIMER SET button
el TIMER SELECT button
r; FUNCTION button
ra DISPLAY/DEMO button
rs MIC 2 jack (JE model)
rd ECHO LEVEL knob
(JE model)
eaesedef
qhqjqk
rd
qlw;wawswd
qf
rs
qg
JE MODEL
rf VIDEO (AV INPUT (VIDEO 2)) jack
rg AUDIO-L (AV INPUT (VIDEO 2)) jack
rh AUDIO-R (AV INPUT (VIDEO 2)) jack
rj SURROUND +/– buttons
rk DBFB +/– buttons
rl 63Hz +/– buttons
t; 250Hz +/– buttons
ta 1kHz +/– buttons
ts 4kHz +/– buttons
td 16kHz +/– buttons
tf NAME IN button
tg DELETE button
th CHAR button
tj INSERT button
tk OPEN SENSOR ON/OFF button
tl EQ MEMORY button
• Abbreviation
JE : T ourist model.
3
SECTION 2
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
2-1. SLIDING PANEL ASSEMBLY
4
Flat type cable (19 core)
Slide mechanism
1
Push the OPEN/CLOSE button to
open the Sliding panel assembly.
5
Sliding panel assembly
2-2. LEVEL SLIDER
4
Four screw
(BVTP2.6x8)
1
Screw (BVTP2.6x8)
a
b
3
Top bracket
2
Screw
(BVTP2.6x8)
2
Screw (BVTP 3x8)
3
Holder level
8
Remove the Level slider direction of arrow.
5
Holder (L) assembly
NOTE FOR INSTALLATION :
Attach in the reverse order, but make sure the rollers (a, b) of the
holder (L) assembly and holder (R) assembly fit into the grooves of
the level slider.
4
b
7
Holder (R) assembly
a
6
Four screw (BVTP2.6x8)
SECTION 3
SER VICE MODE
Connections and Operations When Used Alone
Normally, use the unit connected to the HTC-WX5 as follows.
Basically, when servicing the unit, connect the unit as follows.
UNIT
SYSTEM CONTROL 17P
AC IN
Even when not connected to the HTC-WX5, the unit can operate alone as it mounts a power supply (some functions will however not be
available).
MC Cold Reset
• The cold reset clears all data including preset data stored in the RAM to initial conditions. Execute this mode when returning the set to the
customer.
Procedure:
1. Press three buttons EDIT , ENTER/NEXT , and DISPLAY/DEMO simultaneously.
2. The fluorescent indicator tube becomes blink instantaneously, and the set is reset.
CD Delivery Mode (This mode can be used only when the HTC-WX5 is connected.)
• This mode moves the pick-up to the position durable to vibration. Use this mode when returning the set to the customer after repair.
Procedure:
1. Press 1/u button to turn the set ON.
2. Press LOOP button and 1/u button simultaneously.
3. A message “LOCK” is displayed on the fluorescent indicator tube, and the CD delivery mode is set.
MC Hot Reset
• This mode resets the set with the preset data kept stored in the memory. The hot reset mode functions same as if the power cord is plug ged
in and out.
Procedure:
1. Press three buttons REPEAT , ENTER/NEXT , and DISPLAY/DEMO simultaneously.
2. The fluorescent indicator tube becomes blink instantaneously, and the set is reset.
HTC-WX5
Sled Servo Mode (This mode can be used only when the HTC-WX5 is connected.)
• This mode can run the CD sled motor freely. Use this mode, for instance, when cleaning the pick-up.
Procedure:
1. Select the function “CD”.
2. Press three buttons FLASH , ENTER/NEXT , and KARAOKE PON/MIX simultaneously.
3. The Sled Servo mode is selected, if “CD” is blinking on the fluorescent indicator tube.
4. With the CD in stop status, press ) + button move the pick-up to outside track, or – 0 button to inside track.
5. To exit from this mode, perform as follows:
1) Move the pick-up to the most inside track.
2) Press three buttons in the same manner as step 2.
Note:
• Always move the pick-up to most inside track when exiting from this mode. Otherwise, a disc will not be unloaded.
• Do not run the sled motor excessively, otherwise the gear can be chipped.
Change-over of FUNCTION Name
• The FUNCTION name of external input terminal can be changed over to VIDEO 1 or MD. With the FUNCTION selected to “MD”, about
5dB mute is applied to the input gain.
Procedure:
1. Press 1/u button to turn the set OFF.
2. Press 1/u button together with FUNCTION b utton, and the power is turned on, the display of fluorescent indicator tube changes to
“MD” or “VIDEO 1” instantaneously, and thus the FUNCTION is changed over.
Change-over of AM Tuner Step between 9kHz and 10kHz
• A step of AM channels can be changed over between 9kHz and 10kHz.
Procedure:
1. Press 1/u button to turn the set ON.
2. Select the function “TUNER”, and press TUNER BAND button to select the BAND “MW”.
3. Press 1/u button to turn the set OFF.
4. Press ENTER/NEXT and 1/u buttons simultaneously, and the display of fluorescent indicator tube changes to “MW step 10” or
“MW step 9”, and thus the channel step is changed over.
5
LED and Fluorescent Indicator Tube All Lit, Key Check Mode (Do not connect the HTC-WX5.)
Procedure:
1. Press 1/u button to turn the set ON.
2. Press the OPEN/CLOSE button to open the sliding panel.
3. Press three buttons DSP DELAY , ENTER/NEXT , and DISPLAY/DEMO simultaneously.
4. LEDs and fluorescent indicator tube are all turned on. Each time the MO VIE b utton is pressed, the fluor escent indicator tube lights up
as follows:
lights up completely n lights up partially 1 n lights up partially 2 n lights up completely.
5. Press GAME button, and the key check mode is activated.
6. In the key check mode, the fluorescent indicator tube displays “K @@ J0 V0”. Each time a button is pressed, “K”value decreases.
However, once a button is pressed, it is no longer taken into account. (@@ means the total of buttons)
“J” Value increases like 1, 2, 3 ... if rotating JOG knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “-” direction.
“V” Value increases like 1, 2, 3 ... if rotating VOLUME knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “-” direction.
7. Pressing all buttons lights up the fluorescent indicator tube completely.
8. To exit from this mode, press three buttons EDIT , ENTER/NEXT and DISPLAY/DEMO simultaneously. (COLD RESET)
9. To exit from this mode, press three buttons in the same manner as step 1, or disconnect the power cord.
CD, TAPE Deck Aging Mode (This mode can be used only when the HTC-WX5 is connected.)
This mode can be used for checking the operations of the CD player and tape deck.
• When problems occur;
Aging stops, and the stopped state is displayed on the fluorescent indicator tube.
• When no problems;
Aging continues.
Preparations:
• Set the CD on the DISC1 tray.
• Insert a commercially available tape for recording (tapes which contents can be erased, etc.) in decks A and B.
Setting the aging mode:
Press the PLAY MODE button, ENTER/NEXT button, and STEREO/MONO button together.
When the aging mode is set, the CD roulette mark blinks. To exit the mode, press the 1/u button and turn OFF the power.
Sequence:
The aging mode is executed in the following sequence.
If the function is set to “CD” when the aging mode is set, aging is performed starting from the CD player . When set to “TAPE A” or “TAPE
B”, aging is started from deck A.
If the function is set to others, aging will not be started until the function is switched to CD or TAPE.
Aging of CD player (12 minutes)
Aging of deck A
Aging of deck B
10 minutes
(half)
Display of status:
• The aging status is displayed on the fluorescent indicator tube.
• Normally, the CD player displays the remaining aging time. But if operations ended abnormally, it displays the cause.
• During the aging of the tape deck, the operations performed will be displayed. If operations ended abnormally, this will be displayed at the
fluorescent display tube.
CD Player
• During normal operations:
Display of fluorescent indicator tube
**1-@@
**: Displays “CD” and the remaining aging time (minutes) alternately. The remaining aging time is counted down from 12.
@@: Track number being accessed.
6
• When operations end abnormally:
Display of fluorescent display tube
Display
NO DISC ERR
FOCUS1 ERR
FOCUS2 ERR
GFS ERR
FBIAS ERR
SENSOR ERR
TABLE ERR
TRAY ERR
Tape Deck
Display of Operations
T APE A AG-1
T APE A AG-2
T APE A AG-3
T APE A AG-4
T APE A AG-5
TAPE B AG-1
TAPE B AG-2
TAPE B AG-3
TAPE B AG-4
TAPE B AG-5
Main Cause
DISC 1 is NO DISC from the beginning
Focus is not imposed properly
The focus deviated sev eral times after the disc rotated normally
GFS ERROR
Error during focus bias adjustment
DISC 1 was found to be NO DISC by the disc sensor
The table did not rotate normally
The tray containing the BD did not operate normally
Operation
T APE A, B REW
T APE A FWD
T APE A FF
T APE A REV
T APE A REW
TAPE B REW
TAPE B FWD
TAPE B FF
TAPE B REV
TAPE B REW
Shutoff
100 seconds playback
20 seconds or shutoff
100 seconds playback
Shutoff
Shutoff
100 seconds playback
20 seconds or shutoff
100 seconds playback
Shutoff
Timing of Ending
Operations during aging
• Operations are performed in the following sequence during aging.
<CD player>
1. The CD tray rotates and disc 1 is selected.
2. Chucking is performed.
3. TOC is read.
4. Track 1 played back for 2 seconds.
5. The last track is played back for 2 seconds.
6. 1 to 5 is repeated.
7. After 12 minutes of aging, aging is switched to the tape deck.
<Tape Deck>
1. The tape in deck A and B are rewound to the head at the same time.
2. The FWD side is played back for 100 seconds.
3. The tape is fast forwarded (FF) for 20 seconds. The following procedure is performed when the tape end is reached before the 20
seconds.
4. The REV side is played back for 100 seconds.
5. The tape is rewound to the head (REW).
6. The FWD side is played back for 100 seconds.
7. The tape is fast forwarded (FF) for 20 seconds. The following procedure is performed when the tape end is reached before the 20
seconds.
8. The REV side is played back for 100 seconds.
9. The tape is rewound to the head (REW).
10. The tape in deck A is rewound to the head.
11. The FWD side is played back for 100 seconds.
12. The tape is fast forwarded (FF) for 20 seconds.
The following procedure is performed when the end is reached before the 20 seconds.
13. Aging is switched to the CD player.
7
PANEL Aging Mode
This mode is used for opening and closing the sliding panel continuously.
Setting the aging mode :
With the set at standby condition, press FLASH button, ENTER/NEXT button and STEREO/MONO button together.
The aging will start and sliding panel will follow aging sequence as described below.
• When problems occur ;
Aging stops and “AGING ERROR” is displayed on the fluorescent indicator tube.
• When no problems;
Aging is carried out repeatedly. After 65000 times, “AGING STOP” is displayed and aging stops.
Aging Sequence
Stops for one second in the opened state
Panel open Panel close
n
Counts up
n n
Stops for one second in the closed state
Each time the DISPLAY/DEMO button is pressed, the display switches as follows.
AGING @@@@@ (No. of agings carried out)
OP MAX @.@@ (Maximum time taken for OPEN:In seconds)
OP MIN @.@@ (Minimum time taken for OPEN:In seconds)
CL MAX @.@@ (Maximum time taken for CLOSE:In seconds)
CL MIN @.@@ (Minimum time taken for CLOSE:In seconds)
8
SECTION 4
d
T
DIAGRAMS
STR-WX5
4-1. CIRCUIT BOARDS LOCATION
SECONDARY board
HEADPHONE board
LOADING PANEL board
FRONT AV board
MOTOR board
PRIMARY board
POWER AMP board
MIC / ECHO board
ENCAPSULATED COMPONEN
(EXCEPT JE)
TUNER board (JE)
SURR SPK board
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the 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.
¢
•
• 2 : nonflammable resistor.
• 1 : fusible resistor.
• C : panel designation.
Note: The components identified by mark ! or dotted line
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
• Voltages are tak en with a V OM (Input impedance 10 MΩ).
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
• Abbreviation
: internal component.
with mark ! are critical for safety.
Replace only with part number specified.
under no-signal (detuned) conditions.
Voltage variations may be noted due to normal produc-
tion tolerances.
Voltage variations may be noted due to normal produc-
tion tolerances.
F : FM
f : AM
L : AUDIO (AV INPUT)
g : MD/VIDEO
i : VIDEO (AV INPUT)
E : PB (DECK A)
G : REC (DECK B)
J : CD
EA3 : Saudi Arabia model.
EA4 : Israel model.
EA : Middle East model. (Saudi Arabia and Israel)
AUS : Australian model.
SP : Singapore model.
MY : Malaysia model.
TW : Taiwan model.
JE : Tourist model.
AR : Argentine model.
TH : Thai model.
4
W or less unless otherwise
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• p : parts mounted on the conductor side.
®
•
•
• b : Pattern from the side which enables seeing.
: Through hole.
¢
: internal component.
• Indication of transistor
C
Q
These are omitte
EB
C
EB
These are omitted
• Wavef orm
DISPLAY Section
1
PANEL board
DETECTOR board
MAIN board
5MHz
IC501 0 X2
5.3Vp-p
2
5Vp-p
32.768kHz
IC501 !£ XT2
99
STR-WX5
4-2. BLOCK DIAGRAM
MAIN SECTIOAN
VIDEO
J6301
AV INPUT
(VIDEO 2)
VIDEO 1
FM/AM TUNER
TUNER UNIT IS
SUPPLIED AS
THE ASSEMBLED
BLOCK
B
POWER
SECTION
(Page 11)
09
J101
MD/
CN101
SYSTEM
CONTROL
TO
HTC-WX5
AUDIO L
1
2
7
9
5
6
14
16
17
13
VIDEO
IN L
OUT L
ST L
COM DIN
COM DATA
ST CE
COM CLK
MUTE
STEREO
TUNED
POWER ON/OFF
AC1
AC2
VF1
VF2
IIC DATA
IIC CLK
AC1
AC2
R-CH(CD R)
R-CH(PB R)
R-CH(REC R)
AV SWITCH
Q6301
KEY
MATRIX
MULTI JOG
STATION
S653
VOLUME
S652
SLIDING
SENSOR
IC504,Q513
REMOTE
SENSOR
IC503
R-CH
32 34 30
9
8
VOLUME
IC111(2/2)
31
AMP
IC113(1/2)
MIC AMP
IC6001(2/2)
76
36
57
40
AMP
R-CH
1
2
12
13
3
5
9
ECHO
LEVEL
DISPLAY CONTROL
16
15
14
13
IC113(2/2)
15
10
14
11
4
ECHO PROCESSOR
IC6002
8
LPF 2 OUT LPF 1 IN 1
IC601
G0
12
G15
S0
S35
I
1
64
I
61
59
I
33
31
I
23
DATA
CLK
CS
RESET
38
39
SELECTOR
IC402
RV6001(2/2)
DATA
CLK
LAT
RST
DBFB
SELECTOR
IC112
FLUORESCENT
MUTE
Q183
JE MODEL
FL601
INDICATOR
TUBE
SWITCH
Q132
DET
D131
MIC AMP
IC6001(1/2)
1
RV6001(1/2)
MIC LEVEL
• R CH: Same as L ch
• SIGNAL PATH
: FM
3
L-CH
S/W
MUTE
L+R
TA MUTE
(Page 11)
EXCEPT JE
MODEL
J6001
MIX
MIC
MIC 1
J6002
MIC 2
JE MODEL
C
POWER
SECTION
: AUDIO(AV INPUT)
: MD/VIDEO
: PB
: VIDEO(AV INPUT)
: REC
: CD
EQ
IC111(1/2)
CD
68
TC
66
V2
67
MD/V1
65
TU
69
SELECT
SWITCH
15
4
22
SPEANA CONT
SPEANA0
26
27
SPEANA1
I2C DATA
55
56
I2C CLK
92
DATA OUT
90
DATA IN
89
LAT
93
CLK
ST MUTE
86
STREO
87
88
TUNED
41
AV IN
POWER ON/OFF
94
28
KEY0
I
I
31
KEY3
JOG A
20
21
JOG B
VOL A
18
VOL B
19
SENSOR IN
42
SIRCS IN
43
X501
5MHz
SPEANA
SELECTOR
IC505
Y
Z
9
X2 X1
10 11
R-CH
Y1
1
Y2
2
Z1
3
Z2
5
10
MASTER CONTROL
IC501
2
25
VA CS
17
16
15 f3
14 f4
13 f
XT2
13 14
EQ
AMP
SPEANA
BPF FILTER
IC506
f1
f2
GEQ DATA
GEQ CLK
GEQ LAT
LEVEL B
LEVEL A
DBFB B2
DBFB B1
TA MUTE
FL DATA
FL RESET
MOTOR 1
MOTOR 2
PANEL OPEN
PANEL CLOSE
XT1
X502
32kHz
LINE
LED
LED
FL CLK
FL LAT
RESET
ACCUT
42 41
60
4
3
57
58
R-CH
4
IN
1
96
2
97
3
95
3
2
5
6
7
50
I
54
.
57
I
62
63
I
67
.
70
.
72
.
73
DATA
35
CLK
36
LAT
37
RST
38
15
32
82
83
84
85
D504
5
6
MUTE
SWITCH
Q121
LED
ON/OFF
SWITCH
Q502-512
LED
ON/OFF
SWITCH
Q531-535,
Q538-540
RESET
SWITCH
Q501
IC891
MOTOR
DRIVER
PANEL
OPEN/CLOSE
S892
2
10
PANEL
LED
1
2
RESET
IC502
DELAY
IC401
LPF 1 IN
LPF 1 OUT
CLOCK
13
BUFFER
Q401
M891
M
PANEL
MOTOR
LPF 2 IN
LPF 2 OUT
D507
MICON
INTERFACE
33
123
+5.6V
• Abbreviation
EA3 : Saudi Arabia model.
JE : Tourist model.
1010
POWER SECTION
STR-WX5
C
MAIN
SECTION
(Page 17)
VIDEO
S/W
L+R
L-CH
TA MUTE
MUTE
Q181
POWER AMP
IC901
20
8
MUTE
SWITCH
Q901
15
OVER LOAD
Q952
OVER LOAD
SWITCH
Q851
DET
R-CH
R-CH
R-CH
1
4
2
PROTECTOR
PROTECTOR
IC851
VCC ON
MUTE
7
RY751
RY781
D751
D761
R-CH
R-CH
T901
POWER
6
ST+10V
ST+10V
3 1
REG
IC804
RECT
D810,811
TRANSFORMER
J781
MONITOR
SUPER
WOOFER
TB751
FRONT
SPEAKER
L
R
OUT
SPEAKER
TB201
REAR
B
MAIN
SECTION
(Page 17)
09
MUTE
POWER ON/OFF
AC1
AC2
VF1
VF2
SWITCH
Q853
D852,853
Q854
Q855
Rch
J755
PHONES
POWER ON
MUTE
Q852
UNREG
M901
FAN
MOTOR
+12V
+7V
+5.6V
+5V
-7V
D821
+7V REG
IC801
IC803
REG
-7V REG
IC802
VG REG
Q801
1
1
2
3
+5.6V REG
3
D813
M
+B
-B
VG
FAN MOTOR
Q731,732
3
+
RECT
D805-808
–
+
RECT
D801
–
RECT
D802, 803
AC1
AC2
VF1
VF2
VOLTAGE
SELECTOR
S871
E,EA3,SP,MY,AR,TW,JE
AC
IN
• R CH : Same as L ch
• SIGNAL PATH
: FM
:VIDEO (AV INPUT)
• Abbreviation
: Saudi Arabia model.
EA3
: Singapore model.
SP
: Malaysia model.
MY
:Tourist model.
JE
:Taiwan model.
TW
:Argertine model.
AR
1111
STR-WX5
4-3. PRINTED WIRING BOARD MAIN SECTION
(Page 19)
• Semiconductor
Location
Ref. No. Location
D101 B-11
D102 B-11
D131 E-9
D401 D-5
D402 D-5
D403 C-9
D751 F-11
D752 F-12
D761 E-12
D781 G-10
D801 E-4
D802 F-5
D803 E-4
D804 C-2
D805 F-4
D806 F-4
D807 F-4
D808 F-4
D810 E-4
D811 E-4
D812 C-2
D813 B-2
D851 G-8
D852 G-8
D853 G-8
(Page 22)
• Refer to page 9 for Circuit Boards Location.
(Page 17)
(Page 15)
(Page 15)
IC111 C-10
IC112 E-10
IC113 E-9
IC401 E-7
IC402 D-6
IC801 B-2
IC802 C-3
IC803 B-2
IC804 D-4
IC851 G-9
Q121 B-2
Q132 D-10
Q182 E-11
Q183 E-8
Q401 D-7
Q731 G-11
Q732 G-10
Q801 C-2
Q851 G-9
Q852 H-8
Q853 H-8
Q854 H-7
Q855 H-6
JW264
16
BB
12
14
(Page 17)
(Page 21) (Page 17)(Page 21)
1212
STR-WX5
4-4. SCHEMATIC DIAGRAM MAIN(1/2) SECTION
• Refer to page 24 for IC Block Diagrams.
(Page 15)
(Page 18)
16
(Page 14) (Page 14) (Page 14) (Page 14)
1313
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