Sony STRW-555 Service manual
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of soldering iron around 270˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY MARK ! OR DO TTED 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.
MODEL POWER CORD JACK (MIC2)
AEP
East European
,CIS
Saudi Arabia
,Taiwan
Singapore
,Malaysia
Saudi Arabia
Thai
Israel
Argentine
PRODUCT
COUNTRY
MALAYSIA
MALAYSIA
MALAYSIA
MALAYSIA
JAPAN
THAI
MALAYSIA
MALAYSIA
(Refer to Fig 3)
NOT USED USED
NOT USED
NOT USED
USED
NOT USED
NOT USED
NOT USED
LABEL MODEL NUMBER
(Refer to Fig 1)
4-210-483-0π
4-210-483-0π
4-210-481-0π
4-210-481-0π
4-210-482-0π
4-210-482-1π
4-210-479-0π
PTY button
(Refer to Fig 2)
NOT USED
NOT USED
NOT USEDNOT USED 4-210-479-0π
NOT USED
NOT USED
NOT USED
NOT USED
Australian
UK
E
Chinese
Tourist
MALAYSIA
MALAYSIA
MALAYSIA
MALAYSIA
JAPAN
LABEL MODEL NUMBER
Fig 1. Fig 2. Fig 3.
No.
NOT USED
NOT USED
NOT USED
NOT USED
USED
PTY button
4-210-480-0π
4-210-483-1π
4-210-479-0π
4-210-492-1π
4-210-481-0π
MIN
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
MAX
MIX MIC 2
Jack (MIC 2)
MIX MIC 1
– 2 –
TABLE OF CONTENTS
1. GENERAL ...........................................................................4
2. DISASSEMBLY
• Sliding Panel Assembly...................................................... 5
3. SERVICE MODE ..............................................................6
4. ELECTRICAL ADJUSTMENT ...................................11
5. DIAGRAMS
5-1. Circuit Boards Location ......................................................12
5-2. Block Diagrams
• Tuner Section (AEP, UK model) ..................................... 13
• Tuner Section (East European, CIS model)..................... 15
• Main Section .................................................................... 17
• Power Section ..................................................................19
5-3. Schematic Diagram
–Tuner (AEP, UK model) Section –.................................... 23
5-4. Printed Wiring Board
–Tuner (AEP, UK model) Section –.................................... 25
5-5. Printed Wiring Board
–Tuner (East European, CIS model) Section – ................... 26
5-6. Schematic Diagram
–Tuner (East European, CIS model) Section – ................... 27
5-7. Printed Wiring Board – Main Section – .............................. 29
5-8. Schematic Diagram – Main (1/2) Section – ........................31
5-9. Schematic Diagram – Main (2/2) Section – ........................33
5-10. Schematic Diagram – AV/Mic Section –.......................... 35
5-11. Printed Wiring Board – AV/Mic Section –....................... 36
5-12. Schematic Diagram – Power Amp Section – ................... 37
5-13. Printed Wiring Board – Power Amp Section –................. 39
5-14. Schematic Diagram – Display Section – ..........................41
5-15. Printed Wiring Board – Display Amp Section – ..............43
5-16. Schematic Diagram – Sliding Panel Section – ................. 45
5-17. Printed Wiring Board – Sliding Panel Section – ..............47
5-18. Printed Wiring Board – Trans Section – ........................... 49
5-19. Schematic Diagram – Trans Section – ............................. 51
5-20. IC Block Diagrams ........................................................... 52
5-21. IC Pin Function ................................................................ 56
6. EXPLODED VIEWS
6-1. Case and Sliding Panel Section...........................................59
6-2. Front Panel Section ............................................................. 60
6-3. Slide Mechanism Section.................................................... 61
6-4. Circuit Boards and Back Panel Section ..............................62
7. ELECTRICAL PARTS LIST ........................................ 63
– 3 –
Front Panel
1
SECTION 1
GENERAL
2
34567
8
9
42
41
40
39
38
37
10
11
12
13
EXCEPT
14
EA3 (Japan
Product), JE
15
EA3 (Japan
Product), JE
2930
28
31
33
32
24252627
1920212223
343536
161718
44
14
43
45
46
47
49 50 51 52
48
LOCATION OF PARTS AND CONTROLS
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
10 MEMORY button
11 AUTO indicator
12 OPEN/CLOSE button
13 KARAOKE PON/MPX button
14 MIC LEVEL knob
15 MIX MIC jack (EXCEPT EA3 (Japan
Product), JE model)
MIC 1 jack (EA3 (Japan Product), JE
model)
16 GROOVE button and indicator
17 VOLUME knob
18 EFFECT ON/OFF button and indicator
19 P FILE button
20 PLACE button
21 GAME button
22 MUSIC button
23 MOVIE button
24 ENTER/NEXT button and indicator
25 ) + button and indicator
26 = C MULTI JOG STATION c
27 0 – button and indicator
28 CD EDIT button
29 CD PLAY MODE button
30 CD REPEAT button
31 NON-STOP button and indicator
32 FLASH button
33 LOOP button
34 DBFB button
35 DSP REVERB button and indicator
36 DSP DELAY button and indicator
37 PHONES jack
38 CLOCK/TIMER SET button
39 TIMER SELECT button
40 FUNCTION button
41 PTY button (AEP, UK model)
42 DISPLAY/DEMO button
53
+ dial
54
55 56 57
– 4 –
58 59
15
60
43 MIC 2 jack (EA3 (Japan Product), JE
model)
44 ECHO LEVEL knob
(EA3 (Japan Prooduct), JE model)
45 VIDEO (AV INPUT (VIDEO 2)) jack
46 AUDIO-L (AV INPUT (VIDEO 2)) jack
47 AUDIO-R (AV INPUT (VIDEO 2)) jack
48 SURROUND +/– buttons
49 DBFB +/– buttons
50 63Hz +/– buttons
51 250Hz +/– buttons
52 1kHz +/– buttons
53 4kHz +/– buttons
54 16kHz +/– buttons
55 NAME IN button
56 DELETE button
57 CHAR button
58 INSERT button
59 OPEN SENSOR ON/OFF button
60 EQ MEMORY button
• Abbreviation
EA3 : Saudi Arabia model.
JE : Tourist model.
SECTION 2
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
• 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
NOTE FOR INSTALLATION (LEVEL SLIDER)
1
Screw (BVTP2.6x8)
4
Four screw
(BVTP2.6x8)
b
2
(BVTP2.6x8)
a
3
Top bracket
Screw
2
Screw (BVTP 3x8)
3
Holder level
8
Remove the Level slider direction of arrow.
5
Holder (L) assembly
NOTE :
Attach in the reverse order, but make sure the rollers (
holder (L) assembly and holder (R) assembly fit into the grooves of
the level slider.
a, b
) of the
– 5 –
b
7
Holder (R) assembly
a
Four screw (BVTP2.6x8)
6
SECTION 3
SERVICE MODE
Connections and Operations When Used Alone
Normally, use the unit connected to the HTC-W555 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-W555, 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-W555 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 po wer cord is plugged
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-W555
Sled Servo Mode (This mode can be used only when the HTC-W555 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/MPX 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 button, 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 “AM”.
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 “ AM 9k STEP” or “ AM
10k STEP”, and thus the channel step is changed over.
– 6 –
LED and Fluorescent Indicator Tube All Lit, Key Check Mode (Do not connect the HTC-W555.)
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 DELAY , ENTER/NEXT , and DISPLAY/DEMO simultaneously.
4. LEDs and f luorescent indicator tube are all turned on. Each time the MO VIE button is pr essed, the fluorescent 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 @@ V0 J0”. 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-W555 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
12 minutes
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.
– 7 –
• 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
TAPE A AG-1
TAPE A AG-2
TAPE A AG-3
TAPE A AG-4
TAPE 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 sever al 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
TAPE A REW
TAPE A FWD
TAPE A FF
TAPE A REV
TAPE A REW
TAPE B REW
TAPE B FWD
TAPE B FF
TAPE B REV
TAPE B REW
Shutoff
2 minute playback
20 seconds or shutoff
2 minutes playback
Shutoff
Shutoff
2 minute playback
20 seconds or shutoff
2 minute 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 is rewound to the head.
2. The FWD side is played back for 2 minutes.
3. The ta pe is fast forwarded (FF) f or 20 seconds. The following pr ocedure is performed when the tape end is reached before the 20 seconds.
4. The REV side is played back for 2 minutes.
5. The tape is rewound to the head (REW).
6. The tape in deck B is rewound to the head.
7. The FWD side is played back for 2 minutes.
8. The ta pe is fast forwarded (FF) f or 20 seconds. The following pr ocedure is performed when the tape end is reached before the 20 seconds.
9. The REV side is played back for 2 minutes.
10. The tape is rewound to the head (REW).
11. Aging is switched to the CD player.
– 8 –
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)
– 9 –
SECTION 4
ELECTRICAL ADJUSTMENT
TUNER SECTION 0dB=1µV
Note 1: As a front-end (FE1) is dif ficult to r epair if faulty, replace
it with new one.
Note 2: No adjustment is needed for a tuner pac k except for AEP ,
UK, German, East European, CIS models.
AM Tuned Level Adjustment
(AEP, UK, East European, CIS model only)
Note: FM Tuned Level adjustment should be performed after this
AM Tuned Level Adjustment.
Setting:
Band: MW
loop antenna
(Supplied accessories)
µ
V/m) = SSG output level dB (µV/m) –26dB.
AM RF SSG
30% amplitude
modulation by
400Hz signal
loop antenna
60cm
Field strength dB (
set
AM antenna
terminal (TM1)
Modulation: 999 kHz (at 9 kHz step)
1,050 kHz (at 10 kHz step)
Procedure:
1. Set the output of SSG so that the input level of the set becomes
55 dB.
2. Tune the set to 999 kHz or 1,050 kHz.
3. Adjust RV41 to the point (moment) when the TUNED indicator
will change from going off to going on.
Adjustment Location: TCB board
FM Tuned Level Adjustment
(AEP, UK, East European, CIS model only)
Note: This adjustment should be performed after the AM Tuned
Level Adjustment.
Setting:
Band: FM
FM RF SSG
75
Ω
coaxial
set
Carrier frequency: 98MHz
Modulation: AUDIO 1kHz, 75kHz
Output level: 25dB (at 75
deviation (100%)
Ω
FM ANTENNA terminal (TM1)
open)
Adjustment Location
[TCB BOARD] (Component Side)
TM1
RV41
AM Tuner Level
RV42
FM Tuned
Level
IC21
Procedure:
1. Supply a 25 dB 98 MHz signal from the ANTENNA terminal.
2. Tune the set to 98 MHz.
3. Adjust RV42 to the point (moment) when the TUNED indicator
will change from going off to going on.
Adjustment Location: TCB board
– 10 –
FM Polar Adjustment (East European, CIS model only)
Connection 1 :
FM RF SSG
Carrier frequency: 69 MHz
Output level: 1 mV (60 dB
Modulation: AUDIO 1 kHz, 10 kHz deviation
75
Ω
coaxial
FM antenna
terminal (75
set
Ω
)
µ
) (at 75 Ω open)
Connection 2 :
AF OSC
FM RF SSG
75
Ω
coaxial
set
Procedure :
1. Set the modulation of FM RF SSG to AUDIO 1 kHz, 10 kHz
deviation according to “Connection 1”.
2. Tune the set to 69 MHz.
3. Adjust the RV1702 so that the reading of frequency counter connected to TP1702 (VCO) becomes within 31.25 kHz ± 0.05 kHz.
(VCO adjustment)
4. Then record the reading of the le vel meter connected to TP1701.
5. Set the modula tion of FM RF SSG to AUDIO 31.25 kHz, 10
kHz deviation according to “Connection 2”.
6. Tune the set to 69 MHz.
7. Set the CT1701 to be mechanical center.
8. Adjust the L1701 so that the reading of the level meter connected to TP1701 (FILTER) becomes maximum.
Then adjust the CT1701 so that the reading of the level meter
connected to TP1701 (FIL TER) becomes maximum. (SUB CARRIER PEAK Adjustment)
9. Adjust the RV1701 so that the level at the moment becomes 14
dB higher value than the level recorded in step 4. (SUB CARRIER LEVEL Adjustment)
Audio 31.25 kHz
Carrier frequency: 69 MHz
Output level: 1 mV (60 dB
Modulation: AUDIO 31.25 kHz, 10 kHz deviation
external
modulation
terminal
µ
) (at 75 Ω open)
(EXTERNAL MODULATION)
Adjustment Location: TCB board
Adjustment Location:
[TCB BOARD] (Conductor Side)
level meter
TP1701
(FILTER)
frequency counter
TP1702
(VCO)
IC1701
FM antenna
terminal (75
Ω
)
[TCB BOARD] (Component Side)
L1701
CT1701
RV1701
Sub Carrier
Level
IC1701
RV1702
VCO
Sub Carrier Peak
– 11 –
5-1. CIRCUIT BOARDS LOCATION
)
SECTION 5
DIAGRAMS
HEADPHONE board
LOADING PANEL board
SECONDARY board
PRIMARY board
POWER AMP board
MIC / ECHO board
ENCAPSULATED COMPONENT
(E,EA3,EA4,SP,MY,AR,TW,TH,AUS,CH
TCB board (AEP,UK.EE,CIS)
TUNER board (JE)
SURR SPK board
FRONT AV board
MOTOR board
PANEL board
MAIN board
DETECTOR board
– 12 –
5-2. BLOCK DIAGRAMS
– TUNER SECTION – (AEP, UK model)
ST +10V
STR-W555
TM1
ANTENNA
FM 75Ω
COAXIAL
AM
Q5
ANT IN
VT
FE1
FM FRONT END
IF OUT
Q13
MW
SW
6
5
3
2
26 25 24 23 22 21
Q14
LW SW
CF1
10.7MHz
FE2
MW/LW FRONTEND
Q12
MW
SW
28
29
26
27
10.7MHz
REG
AM OSC
FM AFC
AM RF IN
FM SD
OSC.BUFF
30 14
CF3
ADJ
VCO STOP
AM/FM
15
13
AM MIX
MUTE
IF BUFF
1 FM IN
FM/AM MPX
IC41
2
AM
12
SD
ADJ
AM
10
SD
D41
RV41
X42
450kHz
AM IF
AM
TUNED
LEVEL
IFT41
X41
10.7MHz
4
9
FM DET OUT
AM IF
FM
DET
23 22
AM
24
DET
OUT
7
STEREO
6
TUNED
OUT L
MPX IN
OUT R
IC1751
57
4
ST L
RDS INT
RDS DATA
STEREO
TUNED
MUTE
21
LPF
RCH
20
RDS DECODER
IC1752
13 14
X1751
4.332MHz
A
MAIN
SECTION
AMP IN L
AMP
OUT
17
L
19
2
16
• R CH: Same as L ch
• SIGNAL PATH
: FM
: MW
CF2
IF AMP
Q1, 2
20
10.7MHz
12
13
14
15
16
17
LW SW
Q11
MW
SW
IF AMP
Q3, 4
Q9
RV42
FM
TUNED
LEVEL
(Page 17)
X21
2
AM OSC
7
FM
1214
FM/AM IF
VCO STOP
1710
9
FM
VT1
MW
09
PLL
IC21
11
MW
1 24
XIN
XOUT
4.5MHz
3 ST-CE
CE
4
DI
5
CL
DO
6
COM-DIN
COM-CLK
COM-DATA
– 13 –
– 14 –
STR-W555
– TUNER SECTION – (East European, CIS model)
ST +10V
TM1
ANTENNA
FM 75Ω
COAXIAL
AM
ANT IN
VT
Q5
FE1
FM FRONT END
IF OUT
LW SW
Q13
MW
SW
10.7MHz
6
5
3
2
26 25 24 23 22 21
Q14
Q12
MW
SW
CF1
FE2
MW/LW FRONTEND
20
IF AMP
Q1-4
10.7MHz
12
13
14
15
16
17
CF3
LW SW
Q11
MW
SW
20
21
R CH
VCO
ST IND
910
RCH
STOP
POLAR/PILOT
12
L IN
POLA
13
L IN
SWITCH
SWITCH
IC1702
Q1702
L OUT
R OUT
CA
9 11
D1701
D1702
14
4
SWITCH
Q1703
R CH
D1703
LPF 19
SWITCH
Q1701
AMP
AMP
IN
L
OUT
17
L
• R CH: Same as L ch
• SIGNAL PATH
: FM
: MW
ST-L
STEREO
TUNED
MUTE
L OUT
R OUT
MON
VCO
OUT R
OUT L
7
6
VCO
RV1702
MPX IN
1 FM IN
FM/AM MPX
IC41
28
REG
Q9
AM IF
2
RV42
FM
TUNED
LEVEL
29
26
27
AM OSC
FM AFC
AM RF IN
FM SD
ADJ
OSC.BUFF
30 14
VCO STOP
AM/FM
15
13
AM MIX
MUTE
IF BUFF
AM
SD
ADJ
AM
SD
D41
12
10
RV41
X42
450kHz
IFT41
AM
TUNED
LEVEL
X41
10.7MHz
4
9
FM DET OUT
AM IF
FM
DET
23
AM
24
DET
OUT
STEREO
7
TUNED
6
D42 D43
22
SUB CARRIER
PEAK
L1701CT1701
RV1701
SUB CARRIER
LEVEL
TP1701
POLAR
DECODER
IC1701
2
IN
3
POUT
SUB IN
20
18 17
TP1702
X21
2
AM OSC
7
FM
1214
8
IF REQ
FM/AM IF
VCO STOP
1710
9
FM
VT1
MW
09
PLL
IC21
11
MW
1 24
XIN
4.5MHz
XOUT
13
FM LOW
3
CE
4
DI
5
CL
6
DO
D1704
ST-CE
COM-DIN
COM-CLK
COM-DATA
A
MAIN
SECTION
(Page 17)
– 15 – – 16 –
STR-W555
– MAIN SECTION –
CN101
SYSTEM
CONTROL
TO
HTC-W555
J6301
AV INPUT
(VIDEO 2)
VIDEO 1
EXCEPT AEP, UK,
EE, CIS
FM/AM TUNER
TUNER UNIT IS
SUPPLIED AS
THE ASSEMBLED
BLOCK
J101
MD/
VIDEO
AUDIO L
IN L
OUT L
A
TUNER
SECTION
(Page 14, 16)
AEP, UK, EE, CIS
POWER ON/OFF
B
POWER
SECTION
(Page 19)
09
14
16
17
13
COM DIN
COM DATA
COM CLK
STEREO
AEP,UK
RDS DATA
RDS INT
AC1
AC2
VF1
VF2
1
2
7
9
5
6
ST L
ST CE
MUTE
TUNED
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
VIDEO
32 34 30
9
8
VOLUME
IC111(2/2)
31
AMP
IC113(1/2)
MIC AMP
IC6001(2/2)
76
36
57
40
AMP
IC402
ECHO
LEVEL
1
2
12
13
3
5
IC113(2/2)
15
14
4
109 11
ECHO PROCESSOR
8
LPF 2 OUT LPF 1 IN 1
DISPLAY CONTROL
IC601
G0
12
16
DATA
CLK
15
CS
14
RESET
13
G15
S0
S35
1
64
61
59
33
31
23
IC6002
I
I
I
I
38
39
SELECTOR
RV6001(2/2)
DATA
CLK
LAT
RST
MUTE
Q183
DBFB
SELECTOR
IC112
EA3,JE (Japan Product)
FL601
FLUORESCENT
INDICATOR
TUBE
BUFFER
Q132
R-CH
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 IN
TA MUTE
C
POWER
SECTION
(Page 19)
EXCEPT EA3,JE
(Japan Product)
J6001
MIX
MIC
MIC 1
J6002
MIC 2
EA3, JE
(Japan Product)
: 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
17
RDS DATA
16
RDS CLK
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
SIRCSN
43
X501
5MHz
R-CH
SPEANA
SELECTOR
IC505
Y
Z
9
AEP,UK
X2 X1
10 11
2
Y1
1
Y2
2
Z1
3
Z2
5
10
25
MASTER CONTROL
IC501
VA CS
XT2 XT1
EQ
AMP
f1
17
f2
16
15 f3
14 f4
13 f
13 14
SPEANA
BPF FILTER
IC506
LINE
GEQ DATA
GEQ CLK
GEQ LAT
LEVEL B
LEVEL A
DBFB B2
DBFB B1
TA MUTE
FL DATA
FL CLK
FL LAT
FL RESET
RESET
ACCUT
MOTOR 1
MOTOR 2
X502
32kHz
42 41
60
4
3
57
58
4
IN
1
96
2
97
3
95
3
2
5
LED
LED
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
10
2
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.
– 17 – – 18 –
STR-W555
– POWER SECTION –
TA MUTE
C
MAIN
SECTION
(Page 17)
VIDEO
S/W
LIN
L-CH
MUTE
Q181
POWER AMP
IC901
20
8
MUTE
SWITCH
Q901
15
OVER LOAD
Q952
OVER LOAD
SWITCH
Q851
DET
R-CH
R-CH
1
4
2
PROTECTOR
PROTECTOR
IC851
VCC ON
MUTE
7
RY751
RY781
J781
MONITOR
OUT
TB751
FRONT
SPEAKER
D751
L
TB201
D761
R-CH
R-CH
T901
POWER
6
ST+10V
ST+10V
3 1
REG
IC804
RECT
D810,811
TRANSFORMER
REAR
SPEAKER
R
B
MAIN
SECTION
(Page 17)
09
MUTE
POWER ON/OFF
AC1
AC2
VF1
VF2
SWITCH
Q853
D852,853
Rch
J755
PHONES
POWER ON
MUTE
Q852
UNREG
M901
FAN
MOTOR
+12V
+7V
+5.6V
+5V
-7V
+
RECT
D805-808
–
+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
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
– 19 –
– 20 –
THIS NOTE IS COMMON FOR PRINTED WIRING
4.332MHz
2Vp-p
4.5MHz
4.2Vp-p
d
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
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 taken with a VOM (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 pro-
duction 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
EE : East European model.
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.
CH : Chinese model.
1
/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
WAVEFORMS
– TUNER SECTION –
(AEP, UK model)
1
IC21 @¢ XOUT
2
IC1752 !¢ OEC O
– TUNER SECTION –
(East European, CIS model)
1
4.2Vp-p
4.5MHz
IC21 @¢ XOUT
– DISPLAY SECTION –
1
5.5Vp-p
5MHz
IC501 0 X2
2
5Vp-p
32.768kHz
IC501 !£ XT2
– 21 –
– 22 –
STR-W555
5-3. SCHEMATIC DIAGRAM – TUNER SECTION – (AEP, UK model)
• See page 22 for Waveforms.
• See page 52 for IC Block Diagrams.
(Page 32)
– 23 – – 24 –
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