Sony HCD-RXD3 User manual

HCD-RXD3
US Model
Canadian Model
SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
MICROFILM
SPECIFICATIONS
HCD-RXD3 is the tuner, deck, CD and
amplifier section in MHC-RXD3.
Model Name Using Similar Mechanism HCD-RX55
CD Mechanism Type CX3
Base Unit Type KSM-213ECM
Optical Pick-up Type KSS-213ECM/C2NP
Model Name Using Similar Mechanism NEW
Tape Transport Mechanism Type CWL-44-FR
CD
SECTION
TAPE
DECK
SECTION
AUDIO POWER SPECIFICATIONS:
(U.S.A. model only)
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
with 6 Ωloads both channels driven, from 70 –
20,000 Hz; rated 50 W per channel minimum RMS
power, with no more than 0.9% total harmonic
distortion from 250 mW to rated output.
Amplifier section
Continuous RMS power output
60W + 60W
(6 Ωat 1 kHz, 10%
THD)
Inputs
MD IN (phono jack): voltage 450mV,
impedance 47 kΩ
Outputs
MD OUT (phono jacks): voltage 250mV
impedance 1k Ω
PHONES (stereo phone jack):
accepts headphones of
8 Ωor more.
SPEAKER: accepts impedance of
6 to 16 Ω
CD player section
System Compact disc and digital
audio system
Laser Semiconductor laser
(λ= 780 nm)
Emission duration:
continuous
Laser output Max. 44.6µW*
*This output is the value
measured at a distance of
200 mm from the
objective lens surface on
the Optical Pock-up
Block with 7 mm
aperture.
Frequency response 20Hz – 20kHz (±0.5 dB)
Wavelength 780 – 790 nm
DIGITAL OUT (OPTICAL)
(Square optical connector jack, rear panel)
Wavelength 600 nm
Output Level –18 dBm
Tape deck section
Recording system 4-track 2-channel stereo
Frequency response 40 – 13,000 Hz (±3 dB),
using Sony TYPE I
cassette
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tunr section
Tuning range 87.5 – 108.0 MHz
Antenna FM lead antenna
Antenna terminals 75 Ωunbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning renge 531 – 1,602 kHz
(with AM tuning interval
set at 9 kHz)
530 – 1,710 kHz
(with AM tuning interval
set at 10 kHz)
Antenna AM loop antenna
Antenna terminals External antenna
terminal
Intermediate frequency 450 kHz
— Continued on next page —

— 2 —
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
Checktheantenna 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 microamperes).
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-operatedAC 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)
SAFETY CHECK-OUT
To Exposed Metal
Parts on Set
0.15
µ F1.5 k
Ω
AC
Voltmeter
(0.75 V)
Earth Ground
Fig.A. Using an AC voltmeter to checkAC leakage.
This appliance is classified as a CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT MARKING is located on the rear
exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
CAUTION
Use of controls or adjustments or performance of procedures
otherthanthosespecifiedhereinmayresultinhazardousradiation
exposure.
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 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.
General
Power requirements 120V AC, 60Hz
Power consumption 105W
Dimensions (w/h/d) incl. projecting parts and controls
Approx. 280 ×320 ×400 mm
(111/8 ×125/8 ×153/4 in)
Mass Approx. 9kg (19 lb 13 oz.)
Supplied accessories: AM loop antenna (1)
FM lead antenna (1)
Remote (1)
Plug adaptor (for Asian model) (1)
Design and specifications are subject to change without notice.

— 3 —
TABLE OF CONTENTS
1. GENERAL ·········································································· 4
2. DISASSEMBLY
2-1. CD Door ············································································· 5
2-2. Front Panel ········································································· 6
2-3. Main Board ········································································· 6
2-4. Amplifier Board ································································· 7
2-5. CD Tray ·············································································· 7
2-6. Decord Board ····································································· 8
2-7. Base Unit ············································································ 9
2-8. Cassette Lid ········································································ 9
3. TEST MODE···································································· 10
4. MECHANICAL ADJUSTMENTS ····························· 11
5. ELECTRICAL ADJUSTMENTS ······························· 11
6. DIAGRAMS
6-1. Circuit Boards Location ··················································· 16
6-2. Block Diagrams ································································ 17
Main Section····································································· 17
Tuner, CD Section ···························································· 19
6-3. Printed Wiring Board Main Section ·······························23
6-4. Schematic Diagram Main (1/3) Section ························· 25
6-5. Schematic Diagram Main (2/3) Section ························· 27
6-6. Schematic Diagram Main (3/3) Section ························· 29
6-7. Printed Wiring Board Front Panel Section ····················· 31
6-8. Schematic Diagram Front Panel Section ························ 33
6-9. Printed Wiring Board Amplifier Section ························ 35
6-10. Schematic Diagram Amplifier Section··························· 37
6-11. Printed Wiring Board CD Section ·································· 39
6-12. Schematic Diagram CD Section····································· 41
6-13. IC Pin Function ································································ 43
6-14. IC Block Diagrams ···························································45
7. EXPLODED VIEWS
7-1. Cabinet Section································································· 49
7-2. Front Panel Section ·························································· 50
7-3. CD Mechanism Deck Section-1 ······································· 51
7-4. CD Mechanism Deck Section-2 ······································· 52
7-5. Base Unit Section (KSM-213ECM)································· 53
8. ELECTRICAL PARTS LIST ······································· 54

— 4 —
4
3
2
#¡
@¶
@•
@§
@∞ @¢ @£ @™
@¡
@º
!ª
!§
!∞
!¶ !•
!¢
!£
!™
56 7 8 9
!º
!¡
1
#£
#™
#º
@ª
11/u(Power) button
2TIMER SELECT button
3CLOCK/TIMER SET button
4((TAPE A) button
59(TAPE B) button
6((TAPE B) button
7p(STOP) button
8^(CD) button
9DISPLAY/DEMO button
!º FUNCTION button
!¡ TUNER/BAND button
!™ +button
!£ ++ button
!¢ CD SYNC button
!∞ PAUSE button
!§ REC button
!¶ 6OPEN/CLOSE button
!• DISC SKIP/EX-CHANGE button
!ª DISC 3 button
@º DISC 2 button
@¡ DISC 1 button
@™ DECK B
@£ ENTER/NEXT button
@¢ VOLUME knob
@∞ DECK A
@§ REPEAT/STEREO/MONO button
@¶ PLAY MODE/TUNER MEMORY button
@• EDIT/DIRECTION button
@ª DBFB button
#º FILE SELECT button
#¡ PHONES jack
#™ =– button
#£ =button
SECTION 1
GENERAL

— 5 —
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. CD DOOR
8 CD door
5 Top cover
4 Remove the
claws
4 Remove the
claws
7 Remove the
claws
2 Three screws
1 Three srews
3 Five screws
6 Pull out the CD tray and remove the
CD door with releasing claws into the
directioin of arrow.

— 6 —
2-2. FRONT PANEL
2-3. MAIN BOARD
9 Board to board
connectors
(CN602)
(CN601)
MAIN board
3 Harness
(CN303)
1 Three screws
2 Screw
!º Front panel
4 Flat type wir
e
(CN705)
5 Flat type wire
(CN501)
7 Connector
(CN201)
8 Remove the
claws
6 Connector
(to deckB)
6 Five screws
4 CD mechanism deck
2 Two screws
3 Connector
(CN703)
5 Harness (CN701)
1 Harness (CN301)
7 MAIN board

— 7 —
2-4. AMPLIFIER BOARD
2-5. CDTRAY
2 Two screws
6 Rear cover
5 Remove the claws
4 Two screws
1 Connector
(CN703)
8 Three screws
7 Three screws
9 Three screws
!º AMPLIFIER board
3 Three screw
s
1 Screw
2 Bracket
4 Bracket
5 Flat type wir
e
(CN06)
3 Screw
6 CD tray

— 8 —
2-6. DECORD BOARD
4 Three screws
6 CD decode board
1 Flat cable
(CN706)
3 Flat cable (CN701
)
2 Connector
(CN707)
5 Connector
(CN702)

— 9 —
2-8. CASSETTE LID
2-7. BASE UNIT
2 Screw
3 UD-gear
4 Screw
5 UD-Cam
8 Spring
7 Spring
6 Spring
1 Two screws
9 Base unit
Cassette door
(Note: Four claws are used.)

— 10 —
SECTION 3
TEST MODE
Function Key combination Description
Initialization
STOP + POWER OFF All preset data is re-set to the initial
(default) value.
Model display
STOP + DISC 1 Mode name is displayed.
Destination display
STOP + DISC 2 Destination is displayed.
Version display
STOP + DISC 3Version number of the
microprocessor is displayed.
CD aging mode
STOP + DISC SKIP/EX-CHANGE Set discs to DISC 1 and DISC
3. The following operations are repeated when aging
starts:
1. DISC 1: TOC Read
2. Plays back the last music of the DISC 1
3. DISC 3 : TOC Read
4. Plays back the last music of the DISC 3.
5. STOP
6. Tray is open and closed.
TAPE aging mode
STOP + PLAY A Insert a commercially available cassette tape (10
min) to the decksA and B. When aging starts, each tape is rewound
and the following
operations are repeated:
1. TAPE A: FWD PLAY for one minute
2. TAPE A: FWD STOP for one second
3. TAPE A: FWD PLAY for three minutes
4. TAPE A: FWD FF to tape end
5. TAPE B: FWD PLAY for one minute
6. TAPE B: FWD REC PAUSE for one second
7. TAPE B: FWD REC for three minutes
8. TAPE B: FWD FF to tape end
9. TAPE B: REV PLAY for one minute
10. TAPE B: REV REC PAUSE for one second
11. TAPE B: REV REC for three minutes
12. TAPE B: REV FF to tape end.
CD service mode
STOP + OPEN/CLOSEThe message “CD S - -” is displayed on the
screen. The sled is moved to the outer circumference
while the FF button is pressed. Also, the SLED is moved to the
inner
circumference while the REW button is pressed. After pressing the
PLAY
button, FOCUS is turned ON, CLV-S is set, TRACKING and SLED
servos
are turned OFF and ADDRESS 3 = 3F, 37 is set.
Display
STOP + DBFBAll displays are turned ON.
Balance adjustment value
STOP + DISPLAY/DEMO The balance adjustment value is
displayed.
Key check
STOP + FILE SELECT Function of the pressed key is displayed.

— 11 —
Precaution
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback head pinch rollers
erase head rubber belts
capstan idlers
2. Demagnetize the record/playback head with a head
demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Torque Measurement
SECTION 4
MECHANICAL ADJUSTMENTS
Meter reading
40 to 70 g • cm
(0.56 - 0.97 oz • inch)
1 to 5 g • cm
(0.01 - 0.07 oz • inch)
55 to 140 g • cm
(0.76 - 1.94 oz • inch)
Torque
FWD
FWD
back tension
FF/REW
Torque meter
CQ-102C
CQ-102C
CQ-201B
SECTION 5
ELECTRICAL ADJUSTMENTS
1. Demagnetize the record/playback head with a head
demagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the
parts adjusted.
4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
5. The adjustments should be performed in the order given in this
service manual. (As a general rule, playback circuit adjustment
should be completed before performing recording circuit
adjustment.)
6. The adjustments should be performed for both L-CH and R-
CH.
Record/Playback Head Azimuth Adjustment
(Deck A, Deck B)
Note: Perform this adjustments for both decks.
Procedure:
1. Mode : Playback
2. Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw
so that outputs match within 2 dB of peak.
DECK SECTION 0 dB=0.775V
Tape
P-4-A100
WS-48B
Signal
10 kHz, –10 dB
3 kHz, 0 dB
Used for
Azimuth Adjustment
Tape Speed Adjustment
test tape
P-4-A100
(10kHz, –10dB)
set
SPEAKER
terminal (JK401)
level meter
L-CH
peak
R-CH
peak
screw
position
output
level within
2dB
L-CH
peak R-CH
peak
screw
position
within 2dB

— 12 —
3. Mode: Playback
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location:
Remove the cassette lid before adjustment (See page 9)
Tape Speed Adjustment (Deck A)
Procedure:
1. Mode: Playback
2. Adjust the SFR501 so that the frequency counter reads 3,000
Hz ± 90Hz.
Adjustment Location: MAIN board
Sample Value of Wow and flutter
W. RMS (JIS) within 0.3%
(test tape: WS-48B)
[MAIN BOARD] — Component side —
test tape
P-4-A100
(10kHz, –10dB) SPEAKER
terminal (JK401)
(L-CH)
SPEAKER
terminal (JK401)
(R-CH)
oscilloscop
e
L
R
Waveform of oscilloscope
in phase 45˚ 90˚ 135˚ 180˚
good wrong
Adjustment screws
REC/PB head (deck B)
or PB head (deck A)
test tape
WS-48B
(3kHz, 0dB)
set
SPEAKER
terminal (JK401)
frequency counte
r
+
–
Tape Speed
CN501
CN601
SFR501

— 13 —
TUNER SECTION 0 dB=1µV
AMTuning Voltage Adjustment
Procedure:
1. Set the reception frequency of the unit to 530 kHz.
2. Adjust L105 for 1.2 ± 0.05 V reading on the DC voltmeter.
3. Set the reception frequency of the unit to 1,710 kHz.
4. Confirm that the voltage reading on the DC voltmeter is within
8.0 ± 0.5 V.
Adjustment Location: MAIN board (See page 14)
AMTracking Adjustment
Procedure:
1. Tune the set to 600 kHz.
2. Set the output of AM RF SSG so that the input level of the set
will become 60 dB (µV/m).
3. Adjust L104 so that when the waveform on the oscilloscope is
maximum, no noise appears.
4. Tune the set to 1,400 kHz.
5. Adjust TC102 so that when the waveform on the oscilloscope
is maximum, no noise appears.
• Repeat the procedures in each adjustment several times, and the
tracking adjustment should be finally done by the trimmer
capacitors.
Adjustment Location: MAIN board (See page 14)
Main board
TP1
G
VT
DC voltmete
r
+
–
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.

— 14 —
FMTuned Level Adjustment
Procedure:
1. Supply a 28 dB 98 MHz signal from theANTENNA terminal.
2. Tune the set to 98 MHz.
3. Adjust SFR101 to the point (moment) when the TUNED
indicator will change from going off to going on.
Adjustment Location: MAIN board
Adjustment Location
[MAIN BOARD] — Component side —
FM RF SSG
75
Ω coaxial
Carrier frequency : 98 MHz
Modulation : AUDIO 1 kHz, 75 kHz
deviation (100%)
Output level : 28 dB (at 75 W open)
FM ANTENNA terminal
(JK101)
set
L104 TC102
TP1 SFR101
L105
FM Tuned Level
AM Tuning
Voltage
AM Tracking
JK101

— 15 —
CD SECTION
Note:
1. CD Block is basically constructed to operate without
adjustment. Therefore, check each item in order given.
2. UseYEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10MΩimpedance.
4. Clean the object lens by an applicator with neutral detergent
when the signal level is low than specified value with the
following checks.
5. Adjust the focus bias adjustment when opticalblock is replaced.
RF Level Check
Procedure :
1. Connect oscilloscope to test point TP (RF) on CD DECODER
board.
2. Turned Power switch on.
3. Put disc (YEDS-18) in and playback.
4. Confirm that oscilloscope waveform is clear and check RF
signal level is correct or not.
Note: Clear RF signal waveform means that the shape “◊” can be
clearly distinguished at the center of the waveform.
Adjustment Location:
[CD DECODER BOARD] — Component side —
CD DECODER
board
oscilloscope
TP (RF)
TP (VC)
VOLT/DIV: 200 m
V
TIME/DIV: 500 nS
level: 1.0 Vp-p
+0.3
–0.2
IC702
IC701
J778
J789
TP (VC)
TP
(RF)
CN701

— 16 —
SECTION 6
DIAGRAMS
6-1. CIRCUIT BOARDS LOCATION
MAIN board
CD DECORD board
TR board
FRONT board
SW (A) board
PHOTO SOCKET board
SW (B) board
SW (C) board
SW (D) board
MOTOR board
H/P board
VR board
SENSOR board
MOTOR (6P) (S) board
FUSE board
AMPLIFIER board

HCD-RXD3
6-2. BLOCK DIAGRAMS
MAINSECTION
— 17 — — 18 —
HP901
PB
HEAD
TAPE B
HRP901
REC/PB
HEAD
TAPE A
R CHR CH
R CH
PLAY/REC
CONTROL
Q203, 205
PLAY/REC
CONTROL
DRIVE
Q207
PLAY/REC
CONTROL
D201
L291
BIAS OSC
BIAS
OSC
Q251
HE901
ERASE
HEAD
R CH
1
2
9
3
REC OUT
PB OUT
A/B
5
19
11
10
REC/PB
EQ AMP
IC201
TAPE A/B
Q213
MUTE
Q320
AMS
Q551,552
D202
: FM
: CD
• Signal Path
• RCH is omitted
C
CD
SECTION
TU L
ST IND
TU MUTE
DO1
Q401
MUTE
14 7
4
POWER AMP
IC401
SPEAKER
RELAY
DRIVE
Q403
Q405 1
26
IC402
RL401
SPEAKER
JK401
SCOR
SENS1
SQSO
XLAT
SQCK
CLK
DI
CLK
CE
STB
11
STB
21
CE
25
SCLK
27
SDATA OUT
24
DATA
22
SQCK
20
XLAT
23
SQSO
42
SENS1
4
SCOR
26
SDATA IN
MUTE
DRIVE
Q411
MUTE
SWITCH
Q603,604
62
TU MUTE
28
FM ST IND
17
CTRL
63
SYSTEM MUTE
64
POWER SW
LED DRIVE
IC602
2
3
4
19
ALATCH
11 LED
DRIVE
DI
CLK Q607,608
LED602-607
LED601
XTAL
40
XTAL
39
VR UP
52
X601
10MHz
VR DOWN
53
VR601
VOLUME
PIC UP
46
PIC DOWN
47
TRAY OPEN
50
TRAY CLOSE
51
TURN TABLE
49
DISC COUNT
48
AB
S02
TRAY
OPEN/CLOSE
DET
S03
DISC
COUNTER
DET
S04
TURNTABLE
OPERATION
DET
S01
CD DECK
UP/DOWN
DET
KEY
MATRIX
S601-629
P2 P24
KI0 KI2
FLD601
FLD DISPLAY
SYSTEM CONTROLLER/
FLD DRIVER
IC601
+5.6V
REG
Q308
SITCHING
Q705
+5V
+12V
+7.5V
REG
Q702
CD +7.5V
+12V
REG
Q701 RECT
D705-708
P MUTE
CONT
Q703
AC OFF
DET
Q704
D713
D704
RECT
D701
-12V
IC401 B-
IC401 B+
-27V
REG
Q705
-27V AC
IN
T001
AC4.8V
AC4.8V
16
A
TUNER
SECTION
: PB (DECK A)
: PB (DECK B)
: REC (DECK A)
Q207
Q201
CE
CLK
DI
12
LOCK
MUTE
Q208,209
BIAS
SWITCH
Q252,253
6
Q351
TAPE (L)
4
TUNER (L)
3
CD (L)
2
B
CD
SECTION
CD L
LINE AMP
IC301
9VOL OUT
BUS REGISTER
IC501
REC MUTE
13 A/B
11 BIAS
12 PLAY MUTE
14
DI
2CLK
3
STB
1
DI
CLK
CONT
11
4PLAY
5SOL A
6
SOL B
SOL A
DRIVE
Q505,506
M+12V
SWITCH
Q501,502
M+12V
SOL B
DRIVE
Q503,504
SHIFT REGISTER
IC502
CK
2
S/L
1
QH
9
CLK 3
B REC FWD
5
PHOTO A
11
A MODE SW
13
A HALF
6
PHOTO B
12B MODE SW
14
B HALF
MECHA
BLOCK
SFR501
MOTOR H/L
Q412
MUTE
D406
+5.6V
66 8829 31 G1 G13
Q'S
10
DATA IN
DATA
SENS2
LOCK
13
CLOK
43
SENS2
37
AMS
12
10
S/L
9
DATA IN
L
R
MD
JK301
R CH
MD (L)
5
: MD
1
REC OUT AMP
Q306
Q302
4
B REC REV
Q320 Q551
MUTE
L
RLINE OUT
JK301
R CH
D405
µCON B+
VCC
D602
D601
RESET
SWITCH POWER DOWN DET
Q601
Q602 2
3
RM601
REMOTE
CONTROL
RECEIVER
RESET
38
POWER DOWN
6
REMOTE
8
VCC
VCCVCC
21
.
100 90
.
61
MD MUTE
32
VACS
36
SPEANA 4
SPEANA
35
SPEANA 3
34
SPEANA 2
33
SPEANA 1
13
10
8
5
.
.
(Page 20)
(Page 20)
(Page 20)

HCD-RXD3
TUNER/CD SECTION
— 19 — — 20 —
CE
16 10
6
4
5
3
22
1
PLL
IC103
FM
XO
XI CLK
DI
DO
CE
CLK
DI
DO
OPTICAL PICK-UP
BLOCK
APC
Q701 41
+5V
VC
LD
GND
A
C
B
E
F
FOCUS
COIL
F+
F
T+
T
TRACKING
COIL
36
37
42
39
38
51
APC
FOCUS PHASE
COMPENSATION
DECODER
SERIAL/
PARALLEL
CONVERTER
FE
AMP
RF
AMP
IIL
TTL
TTL
IIL
COMAND
VC
TRACKING PHASE
COMPENSATION
LD
PD
E
F
PD1
PD2
6
25
24
21
20
23
22
33
27
SENS1
RFO
FOK
C OUT
DATA
XLT
CLK
XRST
13
FEO TAO
IC703
T.T/TRAY MOTOR
DRIVER
CD RF/SERVO
PROSSESOR
IC701 (1/2)
2
5
T IN
1
3
4
VR
PD
PD
18
17
19
20
6
F IN
22
SL IN
13
T.T F IN
F+
F
T+
T
SL+
SL
SP+
SP
M
M
MOTOR
M102
SLED
MOTOR
M101
SPINDOL
EFM
DEMO.
XRST
CLV
SERVO
DIGITAL
CLV
D/A
I/F
SUB CODE
PROSSESOR
CPU I/F
7 9 4 5 6 6257
MDP
SENS
SCOR
SQSO
SQCK
CLOCK
DATA
CLK
XLT
DAT
SE
CIN
FOK
RF
SERIAL
I/F
PWM 67
70
71
NL
XTA1
XTA0 X701
MUTE
R-CH
CD DIGITAL
SIGNAL PROCESSOR
IC702
16
:FM
:CD
• SIGNAL PATH
14
7
8
4
2
1
6
10
DETECTOR
16
OSC
FM
75Ω
AM
ANTENNA
JK101 3
8RF MIX 1
4
FM FRONT END
FE101
RF IF
AMP
Q101
CF101
10.7MHz CF102 10.7MHz
L105
MW OSC
IF
G
L104
AM ANT
AM RF
AMP
Q108
MPX
16
FM IF
1
OSC
23
AFC
22 AM RF
21
FM
IF
FM OUT
19
FM
DET
AM/FM
IF BUFF
AM
OSC AM MIX
AM
DET
SMET
20
CF103
450kHz
MUTE
AGC
AM
IF
DECODER 13
L
14
R
4
2
T102
AM IFT
8
FM DET CF104
10.7MHz
R CH
FM/AM MPX
IC102
FM
TUNED
LEVEL
PD1
18
X201
7.2MHz
FM B+
7
TUB+
+12V
Q114
ST MONO
12
15
AM
OSC/FMSD
24
B+
11
SD IN 9
ST/MONO
TU LED
6
12
IF IN
SD SPEED
7
ST IND
10
AM/FM
MUTE
Q117
TU L
ST IND
TU MUTE
DO1
A
MAIN
SECTION
D
5
LD
PD
F/T COIL
SL/SP MOTOR
14
15
30
31
T.T+
T.T
TR+
TR
M
M
MOTOR
T/T
MOTOR
TRAY
21
SP IN
29
TR F IN
12
T.T R IN
28
TR T IN
27
MUTE IN
IC705
IC701 (2/2)
67
REG
Q703
9
REG I
10
REG B
11
REG OUT
7
VCC 8
VCC
+5V
B+
XRST
6
SPEED
11
CONTROL
5
SWITCH
Q702
13
12
TR+
TR
7
14
T.T+
T.T
4
MUTE
3
CLOK
1
STB
IC704
MOTOR DRIVE
REG CONTROL
T.T/TRAY
35
18
11
10
12
13
14
79
21
18
SPOA
STOP
SWITCH
S05
8
XLAT
CLOCK
GEN.
PWM 74
NR MUTE
Q705,707
CD L
SCOR
SENS1
SQSO
XLAT
SQCK
DATA
CE
STB
CLK
DI
C
MAIN
SECTION
:AM
• RCH is omitted
SFR101
SENS2
LOCK
VT
TP9
2
DATA
26
SENS2
19
LOCK
16.9344MHz
2
L MUTE
53
D OUT DIGITAL
OUT
PH701
B
MAIN
SECTION
CLK
DATA IN
Q108
D553
8
AM/FM
PH DET
11
(Page 17)
(Page 17)
(Page 17)

HCD-RXD3
— 21 — — 22 —
1 IC701 #£ (PLAY MODE)
2 IC701 2(FEI)
(PLAY MODE)
3 IC701 $¶ (TEI)
(PLAY MODE)
4 IC703 @¶ (MDP)
5 IC702 $ª (B) GFS
7 IC702 &¡ (XTAO)
Approx. 1.0Vp-p
Approx. 0.1Vp-p
Approx. 0.1Vp-p
2.4Vp-p
0.1µsec/div
0.1V/div
7.7 µsec
5.7Vp-p
4.2336MHz
16.9344MHz 5.6Vp-p
(PLAY MODE)
8 IC601 $º (X' TAL)
4.8Vp-p
10MHz
7.2MHz 3.6Vp-p
9 IC103 @™ (X OUT)
90.790kHz 52Vp-p
!º L251 7
(PLAY MODE)
(REC MODE)
6 IC702 %™ (A) C4M
— BD SECTION — — PANEL SECTION —
— MAIN SECTION —
•WAVEFORM
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 Ωand 1/4W or less unless otherwise
specified.
• % : indicates tolerance.
•¢: internal component.
•2: nonflammable resistor.
•1: fusible resistor.
•C: panel designation.
•U: B+ Line.
•V: B– Line.
•H: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with aVOM(Inputimpedance10MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
F: FM
f: AM
E: PB (DECK A)
d: PB (DECK B)
G: REC (DECK B)
J: CD
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
For printed wiring boards.
Note:
•X: parts extracted from the component side.
•®:Through hole.
•¢: internal component.
•b: Pattern from the side which enables seeing.
B
This is omitted.
CE
Q
• Indication of transistor.
Note:
The components identi-
fied by mark !or dotted
linewithmark !are criti-
cal for safety.
Replace only with part
number specified.
Note:
Lescomposantsidentifiés par
une marque !sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.

HCD-RXD3
6-3. PRINTEDWIRING BOARD MAIN SECTION
— 23 — — 24 —
CN303
1
1
5
5
MAIN BOARD
H/P
BOARD
1-674-559-
11
(11)
1-674-557-
11
(11)
JK101
ANTENNA
JK302
PHONES
TO
FRONT BOARD
CN601
(Page 32)
B
TO
AMPLIFIER BOARD
CN701
(Page 35)
D
TO
CD DECORD BOARD
CN704
(Page 39)
C
TO
DECK A TO DECK B TO DECK A/B
TO
FRONT BOARD
CN602
(Page 32)
A
FM
AM
(4144270040)
C360 C361
C365
1
1
1
11
1
11
1
112
13 24
1118
916
35
2
10
16
15
8
916
2
48
112
1324
1458
GSD
111
12 22
110
1120
18
119 11
21020
TO
DECK B
(4144270010)
R
L
R
L
IN
MD
OUT
16
R368
R366
R365
R371
R373A
R369
R370
R372
R367
R326
R320
R336
R330 D304 R324
R316 R314 R318
Q302
Q301
Q307
C348 C349
C327
C340
C303
C304
C337
C312
C363
C341
C319
C320 C308
C310
C355
C345
C343
C313 C311
C309 D303
C344
C346
C342
C339
C306
C305
C354
Q315
Q309
Q306
Q305
Q320
Q314
C307
R329 R325
R233
R323
R263
R321
R310 R312 R311 R309
R322
R363
Q214
R319 R315 R313 R317
R328
R359 R361
R362
R364
R342
R360
R327
R337 R358
R333 R331
R335 R332
R334
R373
C347
C352
C301
C302
C100
C199 C197 C196
C152
C185
C155 R135
R171
R132
R112
R147C177
R107
R104
R155
R115
C163
C120
C146
C149
C379
R119
R136
R100 R173
R137
C108
C150
C117
C128
C137
R175
R140
L113
R139
R134
C148
C144
C194
C195 X101 C159
C143
C186
C158 L106
C157
C156
R301
R303
R302
R304
R117
R133
R105
R106
C351
IC301
CN301
C331
CN701
Q114
D102
D101
IC103
TP1
D109
FE101
CF101
CF102
CF103
SFR101
R118
R151
R124
R123
R120 R127
R129
R156
R172
R157
R131
R138
R339
R341
R504
R506
R505
R503
R248 R235 R236 R237
D307
D203
D501
C501
R507
R572
R518 R524 R522 R521
R501
R508R560
R557 R558 R559
R519
R523 R520
R553 R551 R555 R554 R556
R352
R350
R347 D305 D306
R513
R241
R205
R346
R345
R207 R209
R223
R222
R232
R230 R224 R208
R206
R202C206
C217
C208
C212 C204
R206A
R220
R244
R227
R228
R215
R221
R231
R213
C209
C211
C201
C203
C207
C205
R201
C213
Q213
R211 C227 C231
C202
C230
C234
C232
C228
C233
C215
C218
C219
R229
C229
C261
C322
R205A
R502
R255
R254
R515
R562
R561 R514
R526 R525 R511
R512
R141
L401
R142 R143
R130
R116
R126
R121
R128
IC102
C162
C187C179
C114
C116
R114
R113
Q101
L108
L105
L114
C113
Q108
TC102
L104
D104
D103
T102
L106
C121 C122
C127
C135
C164 C154 C189
C126
C118
C115
C161
C140
C141
C142
C132 C378
C324 C325
C322
C323
C251
C223
C254
C252
C226 C224
D201 C253
C255
C216
C262
R262
C221
C210
C225
C238
Q251
Q252
Q208
Q207
Q209
D202
R252
R225R226
R212
R251
R253
R246
R264
R243
R247
R245
R214
R216
CN203
C555
C504
C505
C503
C571
C364
C333
C237
C556
C326
C553
C551
C554
Q551
Q552
C500
D302
D502
D552 D551
C139
C198
C123
C125
C124
C130 C131
C129
C151
C138
C188
TP9
C160
CF104
Q117
D110
D111
Q116 G
C193
Q308
Q505
Q506
Q503
Q504
Q502
Q501
Q523
CN602CN601
CN303
IC501
R509 R527 R516
R517R510
R219
R500
R528
C511
GND
C512
CN501
CN202
CN201
SFR501
Q205
Q203
Q201
R204
R203
G
IC502
C502
R349
R563
IC302
C334
C500A
D301
R261
IC201
R234
R239
L251
Q206
Q204
Q202
R242
R240
C214
C222
GSD
BE
BE
SGD
B
B
B
B
BB
B
B
B
B
BE
BE
BB
B
E
E
E
B
B
B
E
E
EE
E
E
E
E
E
E
E
E
E
B
E
B
B
E
E
B
E
B
B
E
E
B
B
B
B
E
E
E
E
B
EB
BE
E
G
D
S
JK301
A
B
F
12
A
B
C
D
E
F
G
H
I
34567891011121314
Ref. No. Location
D101 D-2
D102 D-2
D103 B-2
D104 B-2
D109 D-4
D110 B-8
D111 A-8
D201 E-9
D202 D-8
D203 E-11
D301 H-8
D302 C-10
D303 F-5
D304 G-4
D305 H-10
D306 H-10
D307 D-10
D501 F-10
D502 C-10
D551 D-12
D552 D-12
IC102 B-6
IC103 D-3
IC201 F-8
IC301 D-3
IC302 G-10
IC501 D-11
IC502 F-11
Q101 C-4
Q108 A-3
Q114 D-2
Q116 B-7
Q117 B-7
Q201 G-9
Q202 F-9
Q203 G-9
Q204 E-9
Q205 G-9
Q206 E-9
Q207 E-7
Q208 D-8
Q209 D-7
Q213 G-7
Q214 F-7
Q251 D-9
Q252 D-8
Q301 G-3
Q302 G-3
Q305 G-5
Q306 F-5
Q307 H-3
Q308 B-10
Q309 G-5
Q314 E-5
Q315 E-5
Q320 G-5
Q501 C-11
Q502 C-11
Q503 C-11
Q504 C-11
Q505 C-11
Q506 C-11
Q523 C-10
Q551 G-11
Q552 H-11
• Semiconductor
Location
• Refer to page 16 for Circit Boards Location. • Refer to page 21 for Note on Printed Wiring Board.