Read Sony MHC-WX5 / MHC-WX7AV / STR-WX5 Service Manual online
STR-WX5
E Model
Australian Model
Tourist Model
SERVICE MANUAL
FM STEREO/FM-AM RECEIVER
MICROFILM
SPECIFICATIONS
STR-WX5 is the tuner and amplifier
section in MHC-WX5.
section in MHC-WX5.
Amplifier section
The following measured at AC 120, 220, 240V 50/60Hz
DIN power output (Rated) (FRONT)
DIN power output (Rated) (FRONT)
120 + 120W (6
Ω
at 1kHz DIN)
Continuous RMS power output (Reference)
150 + 150 W
(6
(6
Ω
at 1kHz, 10% THD)
Inputs
MD/VIDEO 1 IN (phono jacks): voltage
450/250mV, impedance 47k
450/250mV, impedance 47k
Ω
AV INPUT AUDIO (phono jacks):
voltage 250mV, impedance 47k
voltage 250mV, impedance 47k
Ω
MIX MIC (phone jack): sensitivity 1mV,
impedance 10k
impedance 10k
Ω
Output
MD/VIDEO 1 OUT (phono jacks):
voltage 450/250mV, impedance 1k
voltage 450/250mV, impedance 1k
Ω
PHONES (stereo phone jack): accepts
headphones of 8
headphones of 8
Ω
or more.
FRONT SPEAKER:
accepts impedance of 6 to 16
accepts impedance of 6 to 16
Ω
REAR SPEAKER:
accepts impedance of 16
accepts impedance of 16
Ω
SUPER WOOFER:
Voltage 1V, impedance 1k
Voltage 1V, impedance 1k
Ω
Video section
Inputs
AV INPUT VIDEO (phono jack): 1Vp-p,
75
75
Ω
Outputs
MONITOR OUT (phono jack): 1Vp-p,
75
75
Ω
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
87.5 – 108.0MHz
Antenna terminals
75
Ω
unbalanced
Intermediate frequency
10.7MHz
AM tuner section
Tuning range
Latin America models:
Latin America models:
530 – 1,710kHz (10kHz step)
531 – 1,710kHz (9kHz 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)
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)
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)
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
External antenna terminal
— Continued on next page —
2
TABLE OF CONTENTS
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
• 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
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
LABEL MODEL NUMBER
No.
MODEL IDENTIFICATION
— BACK PANEL —
— BACK PANEL —
EXCEPT Israel, Thai model
4-900-848-0
π
Israel, Thai model
4-900-848-1
π
MODEL
PART No.
General
Power requirements
Australian model:
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
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.
3
Front Panel
SECTION 1
GENERAL
1
1/u (Power) 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)
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
qj VOLUME knob
qk EFFECT ON/OFF button and indicator
ql P FILE button
w; PLACE button
wa GAME button
ws MUSIC button
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
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
: Tourist model.
wd MOVIE button
wf ENTER/NEXT button and indicator
wg
wf ENTER/NEXT button and indicator
wg
) + button and indicator
wh
= C MULTI JOG STATION c
+ dial
+ 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
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)
1
2
3
4
5
6
7
8
9
0
qa
qs
qd
qf
qg
qh
qj
qk
ql
w;
wa
ws
wd
wf
wg
wh
wj
wk
wl
e;
ea
es
ed
ef
eg
eh
ej
ek
el
r;
ra
EXCEPT JE
rf
rg
rh
rj
rk
rl
t;
ta ts
td tf
tgth
tjtk
tl
rd
rs
qf
qg
JE MODEL
4
SECTION 2
DISASSEMBLY
Note:
Follow the disassembly procedure in the numerical order given.
2-1. SLIDING PANEL ASSEMBLY
4
Flat type cable (19 core)
2
Screw (BVTP 3x8)
3
Holder level
5
Sliding panel assembly
Slide mechanism
1
Push the OPEN/CLOSE button to
open the Sliding panel assembly.
1
Screw (BVTP2.6x8)
4
Four screw
(BVTP2.6x8)
5
Holder (L) assembly
a
a
b
b
6
Four screw (BVTP2.6x8)
7
Holder (R) assembly
8
Remove the Level slider direction of arrow.
2
Screw
(BVTP2.6x8)
3
Top bracket
2-2. LEVEL SLIDER
NOTE FOR INSTALLATION :
Attach in the reverse order, but make sure the rollers (
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.
the level slider.