Sony STR-W550 User manual

STR-W550
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Tourist Model
SERVICE MANUAL
FM STEREO/FM-AM RECEIVER
MICROFILM
STR-W550 is RECEIVER section in
MHC-W550
SPECIFICATIONS
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5-108.0MHz (EXCEPT JE)
76.0-108.0MHz (JE)
Aerial FM lead aerial
Aerial terminals 75 ohm unbalanced
Intermediate frequency 10.7MHz
AM tuner section
Tuning range (Canadian,Thai,Argentine,Australian,E2)
AM: 530-1,710kHz
(with interval set at 10kHz)
531-1,710kHz
(with interval set at 9kHz)
(EXCEPT Canadian,Thai,Argentine,
Australian,E2)
MW: 531-1,602kHz
(with interval set at 9kHz)
(AEP,UK)
LW: 153-279kHz
(with interval set at 3kHz)
(EXCEPT AEP,UK,Canadian,Thai,
Argentine,Australian,E2)
SW: 5.95-17.90MHz
(with interval set at 9kHz)
Intermediate frequency 450kHz
Aerial AM loop aerial,
External aerial terminal
Video section
Inputs AV INPUT VIDEO
(phone jack) :
1 Vp-p, 75 ohms
MONITOR OUT
(phone jack) :
1 Vp-p, 75 ohms
Amplifier section
DIN power output 80W +80W
(6 ohms at 1kHz, DIN)
Music power output 190W + 190W
(6 ohms at 1kHz, 10%, THD)
Inputs MD/VIDEO 1 IN (phono jacks) : voltage 250 mV,
impedance 47 kilo ohms AV INPUT AUDIO
(phone jacks) : voltage 250 mV, impedance 47
kilo ohms
MIX/MIC (phone jack) :sensitivity 1mV,
impedance 10 kilo ohms
Outputs MD/VIDEO 1 OUT
(phone jacks) : voltage 250
mV, impedance 1 kilo ohm
PHONES (stereo phone
jack) : accepts headphone
of 8 ohms or more.
SPEAKER : accepts
impedance of 6 to 16
ohms
SUPER WOOFER :
Voltage 1 V, impedance 1
kilo ohms
— Continued on next page —
E2 : Tuner sections SW band do not exist.

— 2 —
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Noticethat the minus side ofatentalum capacitor may be damaged
by heat.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK !OR DOTTED LINEWITH
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 PAR UNE MARQUE !SUR LES
DIAGRAMMES SCHÉMATIQUES 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.
MODEL IDENTIFICATION
— Model Number Label —
CND : AC 120V AC, ~ 60Hz 170W
AUS : AC 240V AC, ~ 50/60Hz 170W
TH : AC 220V AC, ~ 50/60Hz 170W
AEP, EE, CIS : AC 220-230V ~ 50/60Hz 170W
UK : AC 220-240V ~ 50/60Hz 170W
OTHER MODEL : AC 110-120V, 220-240V selectable
~ 50/60Hz 170W
MODEL IDENTIFICATION
MODEL NO.STR-W550
FM STEREO/FM-AM RECEIVER
• Abbreviations
TH : Thai SP : Singapore AR : Argentine
HK : HongKong EA3 : Saudi Arabia AUS : Australian
TW : Taiwan EA4 : Israel MY : Malaysia
IA : Indonesian JE : Tourist CND : Canadian
EE : East European
E2 : Tuner sections SW band do not exist.
E3 : Tuner sections SW band exist.
TABLE OF CONTENTS
1. GENERAL ······································································ 3
2. TEST MODE ·································································· 5
3. ELECTRICAL ADJUSTMENTS ····························· 6
4. DIAGRAMS
4-1. Circuit Boards Location ····················································· 8
4-2. Printed Wiring Board — Tuner Section — ························ 9
4-3. Schematic Diagram — Tuner Section — ························· 11
4-4. Printed Wiring Board — Panel Section —······················· 14
4-5. Schematic Diagram — Panel Section — ························· 17
4-6. Printed Wiring Board — Main Section — ······················· 20
4-7. Schematic Diagram — Main Section — ·························· 23
4-8. Printed Wiring Board and Schematic Diagram
— Power Section —························································· 27
4-9. IC Pin Function ································································ 31
4-10. IC Block Diagrams ··························································· 33
5. EXPLODEDVIEWS
5-1. Main Section····································································· 35
5-2. Panel Section ···································································· 36
6. ELECTRICAL PARTS LIST ··································· 37
General
Power requirements 120V AC, 60 Hz (Canadian)
240V AC, 50/60 Hz (Australian)
220V AC, 50/60 Hz (Thai)
220 - 230V AC, 50/60 Hz
(AEP,East European,CIS)
220 - 240V AC, 50/60 Hz (UK)
110 - 120V/220-240V AC adjustable, 50/60 Hz
(OTHER MODEL)
Power consumption 170 watts
Dimensions (w / h / d) Approx. 280 ×205 ×336 mm
Mass Approx. 7.0 kg
Design and specifications are subject to change without notice.

— 3 —
SECTION 1
GENERAL
— FRONT PANEL —
1KARAOKE PON/MPX button
2SURROUND button
3EFFECT ON/OFF button
4MUSIC button
5MOVIE button
6GAME button
7P FILE button
8MEMO button
9DBFB button
!º VOLUME
!¡ GROOVE button
!™ TUNER BAND button
!£ MONO/ST button
!¢ FUNCTION button
!∞ MIC LEVEL
!§ MIX MIC jack
!¶ PHONES jack
!• EDIT button
!ª PLAY MODE button
@º 1/ALL DISCS button
@¡ REPEAT button
@™ HIGH FREQ button
@£ ENTER/NEXT button
@¢ MULTI JOG STATION dial
@∞ LOW FREQ button
@§ MEMORY button
@¶ TUNING MODE button
@• FLASH button
@ª LOOP button
#º WAVE button
#¡ AV INPUT jack
#™ CLOCK TIMER SET button
#£ TIMER SELECT button
#¢ RDS button (AEP, UK MODEL)
#∞ DISPLAY button
#§ POWER button

— 4 —
— BACK PANEL —
#¶ ANTENNA terminal
#• SYSTEM CONTROL
#ª MD/VIDEO jack
$º FRONT SPEAKER terminal
$¡ SUPER WOOFER jack
$™ MONITOR OUT jack
$£ VOLTAGE SELECTOR switch
(E, Saudi Arabia, Singapore, Malaysia, Hong
Kong, Taiwan, Indonesian, Argentine, Tourist
MODEL)
Photo : E MODEL

SECTION 3
ELECTRICAL ADJUSTMENTS
– 5 – – 6 – – 7 –
FL DISPLAY/KEY LEDTEST MODE
Press the REPEAT, ENTER/NEXT and SURROUND buttons
simultaneously.
1. All FL segments and all LEDs turn on.
2. To access the microprocessor information, press the P FILE
key. Each pressing of the P FILE key advances the display on
the FL tube in the following sequence.
3. To check the encoder, press the MUSIC key. The following
display appears on the FL tube.
"K0J0V0"
The number after K indicates the number of times that the key is
pressed. The key which was pressed in the past, is not counted.
The key which is pressed hereafter is counted. Pressing any key
increases the number after K.
The number after J indicates the number of rotations that the JOG
dialisrotated. Turning theJOGdial clockwise increasesthe number
after J. Turning the JOG dial counter-clockwise decreases the
number after J.
The number after V indicates the number of rotations that the
VOLUME dial is rotated. Turning the VOLUME dial clockwise
increases the number after V. Turning theVOLUME dial counter-
clockwise decreases the number after V.
To exit thismode,perform the "ColdReset"(reset clearing memory)
as described below.
GENERALTEST MODE
(INCLUDING AMPLIFIER ANDTUNER)
Press the REPEAT, ENTER/NEXT and CLOCK TIMER SET
buttons simultaneously while the main power is on.
1. Sound volume display segment starts blinking.
2. The tuning enters the PRESET mode.
3. Rotating theVOLUMEcontrolclockwise increases thevolume
level to maximum.
Rotating the VOLUME control counter-clockwise decreases
the volume level to minimum.
4. Pressing the MUSIC key decreases the equalizer curve to
minimum and "EQ CHECK" appears on the display.
Pressing the MOVIE key increases the equalizer curve to
maximum.
Pressing the GAME key makes the equalizer curve flat.
5. Pressing any of the DBFB, GROOVE or SURROUND key
disappears "EQ CHECK" on the display.
To exit thismode,perform the "ColdReset"(reset clearing memory)
as described below.
SECTION 2
TEST MODE
AGING MODE
1. CD aging mode
To execute the CD aging, set the three discs to the CD tray and
set the function to CD. REPEAT, ENTER/NEXT and LOOP
buttons simultaneously. The CD aging mode starts and the disc
calendar starts blinking.
2. Tape aging mode
To execute the tape aging, set the two tapes to the tape A and B
drives. Set the function to TAPE. Press the REPEAT, ENTER/
NEXT and LOOP buttons simultaneously. Press the A forward
key to start the tape aging mode. "AGING" appears on the
display.
CD SERVICE MODE
Turn on the main power. Press the REPEAT, ENTER/NEXT and
KARAOKE PON/MPX buttons simultaneously.
VACS toggles between ON and OFF.
VACS LEVEL DISPLAY
Turn on the main power. Press the EDIT, ENTER/NEXT and
KARAOKE PON/MPX buttons simultaneously.
VACS level appears on the display.
CD SHIP MODE
Turn on the main power. Press the PLAY MODE and POWER
buttons simultaneously.
The main power is turned off and LOCK appears on the display.
TUNER STEP CHANGE
Turn on the main power. Set the function to TUNER. Select MW
band from the present tuning.
Turn off the main power. Press the ENTER/NEXT and POWER
buttons simultaneously. The main power is turned on and the
changed step appears on the display.
MD/VIDEO 1 FUNCTION CHANGE
Press the FUNCTION and POWER buttons simultaneously while
the main power is on. When the function is set to VIDEO 1, the
function is changed to MD and MD appears on the display.
When the function is set to MD, the function is changed to VIDEO
1 and VIDEO 1 appears on the display.
COLD RESET (Reset which clears memory.)
Press the REPEAT, ENTER/NEXT and DISPLAY buttons
simultaneously at any time. The system is reset while clearing
memory.
HOT RESET
(Reset which does not clear memory.)
Press the REPEAT, ENTER/NEXT and TIMER SELECT buttons
simultaneously at any time. The system is reset without clearing
memory.
(AEP, UK, East European, CIS model)
Note: As a front-end (FE1) is difficult to repair if faulty, replace it
with new one.
AM Section Adjustment
Setting:
AMTuned Level Adjustment
Band: AM or MW
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.
3. Adjust RV41 to thepoint (moment) when theTUNED indicator
will change from going off to going on.
Adjustment Location : TCB board
FM Section Adjustment
Note: This adjustment should be performed after the AM Tuned
LevelAdjustment due to the same adjustment element.
Setting:
AM RF SSG
loop antenna
set
loop antenna
(Supplied accessories)
60 cm AM ANTENNA
terminal (TM1)
30% amplitude
modulation by
400 Hz signal
Field strength dB (
µ V/m) =SSG output level dB ( µ V/m) –26 dB.
FMTuned Level Adjustment
Band: FM
Procedure:
1. Supply a 25 dBµ 98 MHz signal from theANTENNA terminal.
2. Tune the set to 98 MHz.
3. If the TUNED indicator does not light, adjust RV42 to the point
(moment) when the TUNED indicator will change from going
off to going on.
Adjustment Location: TCB board
Adjustment Location:
[TCB BOARD] (Component Side)
RV42
IC41 RV41
TM1
FE1
Carrier frequency : 98 MHz
Modulation : AUDIO 1 kH, 75 kHz
deviation (100%) FM ANTENNA termina
l
(TM1) (75 Ω open)
75
Ω coaxial
set
FM RF stereo signal
generator
(East European, CIS model)
FM Polar Adjustment 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 becomes within 31.25 kHz ± 0.05
kHz.(VCO adjustment)
4. Then record the reading of the level meter connected to TP1701
5. Set the modulation 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 theL1701 so thatthereading of thelevelmeter connected
to TP1701 become maximum.
Then adjust the CT1701 so that the reading of the level meter
connected to TP1701 becomes maximum. (SUB CARRIER
PEAK Adjustment)
9. Adjust the RV1701 so that the level at the moment becomes
14dB higher value than the level recorded in step 4. (SUB
CARRIER LEVEL Adjustment)
FM ANTENNA termina
l
(75 Ω )
75
Ω coaxial
set
FM RF SSG
Connection 1:
Carrier frequency : 69 MHz
Output level : 1mV (60dBµ) (at 75 Ωopen)
Modulation : AUDIO 1 kHZ, 10kHz deviation
FM ANTENNA terminal
(75
Ω )
75
Ω coaxial
set
FM RF SSG
AF OSC
Audio 31.25 kHz external
modulation
terminal
Connection 2:
Carrier frequency : 69 MHz
Output level : 1mV (60 dBµ) (at 75 Ωopen)
Modulation : AUDIO 31.25 kHZ, 10 kHz deviation
(EXTERNAL MODULATION)
Adjustment Location : (East European, CIS model)
[TCB BOARD] (Component Side)
RV41
IC1701
RV42
RV1701
CT1701
TP1702
(VCO)
(FILTER) TP1701
TM1
FE1
+
–
FREQUENCY COUNTER
+
–
LEVEL METER
IC41
L1701
RV1702
RV41
AM tuned level
Adjustment
RV1701, TP1701
Sub carrier level
Adjustment
RV1702, TP1702
VCOAdjustment
RV42
FM tuned level
Adjustment
CT1701, L1701, TP1701
Sub carrier peak
Adjustment
STR microprocessor version number
HCD microprocessor version number
VCD microprocessor version number (VCD model only)
Model name
Destination

STR-W550
4-1. CIRCUIT BOARDS LOCATION
SEC BOARD
PANEL BOARD
AVIN BOARD
JOG BOARD
MIC ECHO BOARD
AMP BOARD
MAIN BOARD
TCB BOARD (AEP, UK, EE, CIS MODEL)
ENCAPSULATED COMPONENT
(EXCEPT AEP, UK, EE, CIS MODEL)
DUMMY BOARD
PRI BOARD
4-2. PRINTED WIRING BOARD — TUNER SECTION —
(AEP, UK)
12
A
B
C
D
E
F
G
H
I
J
3456
12
A
B
C
D
E
F
G
H
I
J
3456
(East European, CIS)
Note:
•:parts extracted from the component side.
•:parts on the side which is seen.
Ref. No. Location
D21 G-2
D41 G-3
D42 H-5
D1751 I-4
IC21 G-2
IC41 E-4
IC1751 I-2
IC1752 I-4
Q1 F-2
Q2 F-2
Q3 E-3
Q4 E-2
Q5 E-3
Q9 D-2
Q11 C-4
Q12 B-4
Q13 B-3
Q14 B-3
• Semiconductor
Location
Note:
•:parts extracted from the component side.
•:parts on the side which is seen.
Ref. No. Location
D21 G-2
D41 G-4
D42 H-5
D43 H-5
D1701 J-4
D1702 J-4
D1703 H-4
D1704 J-4
IC21 G-3
IC41 E-5
IC1701 I-3
IC1702 I-3
Q1 F-3
Q2 F-3
Q4 E-3
Q5 E-3
Q9 D-3
Q11 C-5
Q12 B-5
Q13 B-4
Q14 B-4
Q1701 I-3
Q1702 I-4
Q1703 J-4
• Semiconductor
Location
— 8 — — 9 — — 10 —
SECTION 4
DIAGRAMS

– 31 –
4-9. IC PIN FUNCTION
• IC501TMP87CM75F-6608 (DISPLAY CONTROL)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
I/O
—
—
O
I
O
O
O
O
I
I
—
O
I
I
O
I
—
I
I
I
I
I
I
I
I
—
I/O
I/O
—
—
—
O
O
O
O
O
O
O
—
I
I
I
I
I
I
I
I
—
—
—
Description
Not used
POWER SUPPLY FOR VFT DRIVER
Transfer clock output serial data
Serial data input
Serial data output
Chip enable output
Latch output to IC504
H : D542, D543 ON
Stereo signal input
Tuned signal input
Power supply (Ground)
Oscillator connection terminal (8MHz)
Oscillator connection terminal (8MHz)
Reset signal input terminal
Oscillator connection terminal (32.768kHz)
Oscillator connection terminal (32.768kHz)
Not used (Ground)
AC Power supply off
RDS DATA input (European model only)
RDS clock input (European model only)
SIRCS signal input
JOG dial encoder input
Volum encoder input
Volum encoder input
JOG dial encoder input
Not used
12C clock I/O
12C data I/O
Not used
Power supply (5V)
Power supply (Ground)
Latch output to IC105
Latch output to IC2002
Mute output to transistor L : Mute ON
DBFB level control output L : DBFB HIGH
Latch output to IC6003
H : Key con ON
L : SP relay ON
Not used
Key data input (A/D converter)
Key data input (A/D converter)
Key data input (A/D converter)
Spectrum analyzer signal input
Spectrum analyzer signal input
Spectrum analyzer signal input
Spectrum analyzer signal input
Input for model select
Power supply for analog (Ground)
Power supply (+5V)
Power supply (Ground)
Pin Name
NC
VG
COM CLK
ST DATA IN
COM DATA
ST CE
LED LAT
POWER ON/OFF
STEREO
TUNED
Vss
X OUT
X IN
RESET
XT OUT
XT IN
GND
BACK UP
RDS DATA
RDS CLK
SIRCS IN
JOG IN B
VOL IN B
VOL IN A
JOG IN A
AUB IN
12C CLK
12C DATA
AUB OUT
VDD
Vss
EQ LAT
VR LAT
TA MUTE
VIDEO MD
KEY CON LAT
KEY CON ON/OFF
POWER ON/OFF
P LOG RELAY
KEY IN 0
KEY IN 1
KEY IN 2
SPEANA 0
SPEANA 1
SPEANA 2
SPEANA 3
SUFFIX
VASS
VAREF
VDD

– 32 –
Pin No.
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
—
Description
H : MUTE L : Signal Receiving
Not used
Pin Name
FL–1G
FL–2G
FL–3G
FL–4G
FL–5G
FL–6G
FL–7G
FL–8G
FL–9G
FL–10G
FL–11G
FL–12G
FL–13G
FL–14G
FL–P1
FL–P2
FL–P3
FL–P4
FL–P5
FL–P6
FL–P7
FL–P8
FL–P9
FL–P10
FL–P11
FL–P12
FL–P13
FL–P14
FL–P15
FL–P16
FL–P17
FL–P18
FL–P19
FL–P20
FL-P21
FL–P22
FL–P23
FL–P24
FL–P25
FL–P26
FL–P27
FL–P28
FL–P29
FL–P30
FL–P31
FL–P32
FL–P33
FL–P34
ST MUTE
NC
Grid output to FL501
Segment output to FL501

– 33 –
4-10. IC BLOCK DIAGRAMS
PHASE DETECTOR
CHARGE PUMP
SWALLOW COUNTER
1/16, 1/17 4BITS
12BITS PROGRAMMABLE
DRIVER
UNIVERSAL
COUNTER
REFERENCE
DIVIDER
POWER
ON
RESET 1/2
C
2
B
I/F
12 3 45 6 7 8 9 10
20 19 18 17 16 15 14 13
1211
21222324
XOUT VSS AOUT2 AIN2 PD2 PD1 AIN1 AOUT1 VDD FMIN AMIN IO2
XIN
D0
CL
D1
CE
BO5 BO1 BO2 BO3 BO4
IO1
IFIN
UNLOCK
DETECTOR
DATA SHIFT REGISTER LATCH
IC21 LC72130
ALC
BUFF
AM
OSC AM
MIX AM
RF. AMP
AGC
S METER
LEVEL
DET
FM
IF AM DET
S-CURVE
AM/FM
IF
BUFF
REG
TUNING
DRIVE
COMP
GND
AM/FM
SW
VCC
PHASE
DET
PILOT
DET
VCO
FF
STEREO
DRIVE TRIG
STEREO
SW
MUTE
FF FF
FM
IF FM
DET
DECODER
ANTI BIRDIE
12 3 45 6 7 8 9 10
20 19 18 17 16
15141312
11
21222324252627282930
FM-SD AM-OSC FM-AFC AM-RF-IN AGC AM. CUT AM/FM VCO MPX-IN OUT R OUT L AMP-IN R AMP-IN L R L
VCO-STOP
ST-LED
AM/FM
AM. SD AM. SD
IF-BUFF
VCC
DET
FM-IN
AM-MIX
IF
REG
AM-IF
GND
TU-LED
FM
AM
IC41 LA1835
IC1701 IR3R42
OSC
1/2
1/2
PHASE
WAVEFORM
SEP.
GATE SAMPLE
& HOLD
BUFFER
REGULATOR
PHASE
COMPARATOR PHASE
COMPARATOR 2
MUTE
TRIGGER
12 3 45 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
AMP
AMP
AMP
LAMP
VCO STOP
ST
LOUT
ROUT
LHC
RHC
POUT
IN
VCC
GND VCO LPF1A LPF1B DETIN LPF2A LPF2B SUBIN SUBOUT MON

– 34 –
1 2 3 4 5 6 7 8
OVER LOAD DET
F/F
OFFSET DET
LATCH/
AUTORESET
VCC ON
MUTE
AC OFF
DET
VCC
IC850 µPC1237HA
IC1702 MC14053BCP
+
–
+
–
+
–
+
–
+
–
+
–
+
–
SBAND GRAPHIC EQUALIZER
SBAND GRAPHIC EQUALIZER
U-CON
INTER
FACE
+ –
+
–
+
–
+
–
+
–
+
–
+
–
+
–
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68
69
70
KEY OUT1
NC3
REC 1A
REC 1B
REC 1C
NC4
F1 F1
F1 O1
F1 IN1
F2 F1
F2 O1
F2 IN1
F3 F1
F3 O1
F3 IN1
F4 F1
F4 O1
F4 IN1
F5 F1
F OUT1
VOL OUT1
VOL IN1
BBIN1
BB11 BB12
BBIN2 VOL OUT2 VOL IN2 F OUT2 F5 F2 F4 IN2 F4 O2 F4 F2 F3 IN2 F3 O2 F3 F2 F2 IN2 F2 O2 F2 F2 F1 IN2 F1 O2 F1 F2 NC6 REC 2C REC 2B REC 2A NC7 KEY OUT2
BB22
BUF IN1
BUF OUT1
NC5
AVDD
DGND
LATCH
DATA
CLOCK
DVDD
PORT C
PORT B
PORT A
BUFOUT1
BUFIN1
BB21
KEY IN1
DELAY OUT
DELAY IN
NC2
IN 1B
NC1
IN 1A
AGND
AVSS
IN 2A
NC9
IN 2B
NC8
BPF IN
BPF OUT
KEY IN2
IC105 M62427FP-A
11151412 9 1524
678
16 13 10
VDD SELECT A VSS
VEE
INH 7
SELECT B0123 3012
3

– 35 –
SECTION 5
EXPLODEDVIEWS
Note:
• -XX, -X mean standardized parts, so they may
have some differences from the original one.
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delayshould be anticipatedwhen ordering these
items.
• Themechanical parts with noreference number
in the exploded views are not supplied.
• Hardware (#mark) list is given in the last of
this parts list.
• Abbreviations
TH : Thai SP : Singapore
AR : Argentine HK : HongKong
EA3 : Saudi Arabia AUS : Australian
TW : Taiwan EA4 : Israel
MY : Malaysia IA : Indonesian
JE : Tourist CNA : Canadian
EE : East European
E2 : Tuner sections SW band do not exist.
E3 : Tuner sections SW band exist.
The components identified by mark !or
dotted line with mark !are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque
!sont critiques pour la sécurité.
Ne les remplacer que par une pièce portant
le numéro spécifié.
5-1. MAIN SECTION
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
1 3-363-099-11 SCREW (CASE 3 TP2)
*2 4-991-364-11 CASE
*3 1-666-059-11 SEC BOARD
*4 1-666-065-11 PRI BOARD
*5 1-666-066-11 AMP BOARD
6 A-4303-582-A TCB BOARD (AEP, UK)
6 A-4303-581-A TCB BOARD (EE, CIS)
6 1-233-544-21 ENCAPSULATED COMPONENT(CND)
6 1-233-545-21 ENCAPSULATED COMPONENT
(E2,EA4,TH,AR,AUS)
6 1-233-546-21 ENCAPSULATED COMPONENT
(E3,EA3,MY,SP,HK,TW,IA)
6 1-693-385-21 TUNER (JE)
7 1-666-067-11 DUMMY BOARD
*8 4-991-360-01 PANEL (WH1), BACK (E,AR)
*8 4-991-360-11 PANEL (WH1), BACK (MY,SP)
*8 4-991-360-21 PANEL (WH1), BACK (HK)
*8 4-991-360-31 PANEL (WH1), BACK (AUS)
*8 4-991-360-41 PANEL (WH1), BACK (AEP,UK)
*8 4-991-360-51 PANEL (WH1), BACK (CND)
*8 4-991-360-61 PANEL (WH1), BACK (EA3,TW,JE)
*8 4-991-360-71 PANEL (WH1), BACK (EE,CIS)
*8 4-991-360-81 PANEL (WH1), BACK (EA4,TH)
*8 4-991-360-91 PANEL (WH1), BACK (IA)
*9 A-4398-446-A MAIN BOARD, COMPLETE
(E,EA3,MY,SP,HK,TW,AR,AUS,JE)
*9 A-4398-447-A MAIN BOARD, COMPLETE (AEP,UK)
*9 A-4398-448-A MAIN BOARD, COMPLETE (EE,CIS)
*9 A-4398-449-A MAIN BOARD, COMPLETE (CND)
*9 A-4403-304-A MAIN BOARD, COMPLETE (EA4,TH)
*9 A-4403-316-A MAIN BOARD, COMPLETE (IA)
10 4-970-381-11 FOOT (REAR)
*11 3-703-244-00 BUSHING (2104), CORD (EXCEPT TH)
11 3-703-571-11 BUSHING (S) (4516), CORD (TH)
!12 1-690-608-11 CORD, POWER (AUS)
!12 1-751-326-31 CORD, POWER (TH)
!12 1-777-070-21 CORD, POWER (CND)
!12 1-777-071-21 CORD, POWER
(AEP,EE,CIS,EA3,EA4,MY,SP,HK,TW,AR)
!12 1-777-513-11 CORD, POWER (UK)
!12 1-782-315-11 CORD, POWER (E,IA,JE)
!13 1-569-007-11 ADAPTOR, CONVERSION 2P (E,IA,JE)
!13 1-569-008-21 ADAPTOR, CONVERSION 2P(EA3,MY,SP,TW,AR)
!13 1-770-019-11 ADAPTOR, CONVERSION PLUG 3P (HK)
14 4-956-370-12 BAND, PLUG FIXED (UK,HK,AUS)
IC901 8-749-921-04 IC STK-4211MK-2 (EXCEPT CND)
IC901 8-749-922-65 IC STK-4221MK2 (CND)
!T901 1-431-364-11 TRANSFORMER, POWER (CND)
!T901 1-431-365-11 TRANSFORMER, POWER
(E,EA3,EA4,MY,SP,HK,TW,IA,TH,AR,AUS,JE)
!T901 1-431-366-11 TRANSFORMER, POWER (AEP,UK,EE,CIS)