Sony HCD-RXD7AV User manual

HCD-RXD7AV
US Model
Canadian Model
SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
ManufacturedunderlicensefromDolbyLaboratories
Licensing Corporation.
“DOLBY”andthedouble-Dsymbol aaretrademarks
of Dolby Laboratories Licensing Corporation.
Model Name Using Similar Mechanism HCD-RXD3
CD CD Mechanism Type CX3
Section Base Unit Name KSM-213ECM
Optical Pick-up Name KSS-213ECM/C2NP
Tape deckModel Name Using Similar Mechanism HCD-RXD6
Section Tape Transport Mechanism Type CWL-44-RR
U.S and foreign patents licensed from Dolby
Laboratories Licensing Corporation.
SPECIFICATIONS
HCD-RXD7AV is the Amplifier, CD
player,Tape Deck andTuner section in
MHC-RXD7AV.
Ver 1.1 2002. 03
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-928-974-12
2002C1600-1
© 2002.03
AUDIO POWER SPECIFICATIONS:
US model
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION :
with 6 Ωloads, both channels driven, from 70 - 20,000
Hz; rates 60 W per channel minimum RMS power,
with no more than 0.9% total harmonic distortion from
250 mW to rated output.
Amplifier section
Front Speaker :
Continuous RMS power output (reference)
70 + 70 W
(6 Ωat 1 kHz, 10% THD)
Total harmonic distortion less than 0.07%
(6 Ωat 1 kHz, 35 W)
Center Surround Speaker :
Continuous RMS power output (reference)
30 W
(6 Ωat 1 kHz, 1% THD)
Rear Surround Speaker :
Continuous RMS power output (reference)
30 + 30 W
(6 Ωat 1 kHz, 1% THD)
Inputs
MD/VIDEO IN : voltage 450/250 mV,
(phono jacks) inpedance 47 kΩ
DVD INPUT
FRONT IN : voltage 450 mV,
(phono jacks) inpedance 47 kΩ
CENTER IN : voltage 450 mV,
(phono jacks) inpedance 47 kΩ
REAR IN : voltage 450 mV,
(phono jacks) inpedance 47 kΩ
WOOFER IN : voltage 450 mV,
(phono jacks) inpedance 47 kΩ
Outputs
MD/VIDEO OUT : voltage 250 mV
(phono jacks) impedance 1 kΩ
PHONES : accepts headphones of
(stereo phone jack) 8 Ωor more
FRONT SPEAKER : accepts impedance of
6 to 16 Ωor more
CENTER SPEAKER:accepts impedance of
6 to 16 Ωor more
SUPER WOOFER : Voltage 1 V, impedance
1 kΩ
CD player section
System Compact disc and digital audio
system
Laser Semiconductor laser (λ=780nm)
Emission duration: continuous
Laser output Max. 44.6 µW*
*This output is the value
measured at a distance of 200
mm from the objective lens
surface on the Optical Pick-up
Block with 7 mm aperture.
Frequency response 20 Hz - 20 kHz (±0.5 dB)
Wavelength 780 -790 nm
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB
CD DIGITAL OUT
(Square optical connector jack, rear panel)
Wavelength 600 nm
Output Level –18 dBm
Continued on next page

2
Tape player section
Recording system 4-track 2-channel stereo
Frequency response 60 - 13,000 Hz (±3 dB),
(DOLBY NR OFF) using Sony TYPE I cassette
Wow and flutter ±0.15% W.Peak (IEC)
0.1% W.RMS (NAB)
±0.2% W.Peak (DIN)
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner 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 range 530 - 1,710 kHz
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
General
Power requirements 120 VAC, 60 Hz
Power consumption 190 W
Dimensions (w/h/d) Approx. 280 ×340 ×390 mm
(111/8×131/2×153/8in.)
Mass: Approx. 9.6 kg
(21 lb 2 oz.)
Supplied accessories: AM loop antenna (1)
Remote (1)
FM lead antenna (1)
Speaker cords (2)
Center speaker pads (4)
Design and specifications are subject to change without notice.
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.
SAFETY CHECK-OUT
(US model only)
After correcting the original service problem, perform the
following safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,screws,
and all other exposed metal parts forAC leakage. Check leakage as
described below.
LEAKAGE
TheAC 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 microampers).
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 2VAC range are suitable. (See
Fig. A)
Earth Ground
AC
voltmeter
(0.75V)
1.5k
Ω
0.15 µ F
Fig.A. Using an AC voltmeter to check AC leakage.
To Exposed Metal
Parts on Set
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.

3
SECTION 1
SERVICING NOTES
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing 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.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
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.
The following caution label is located inside the unit.
1. SERVICING NOTES ··················································· 3
2. GENERAL ······································································ 4
3. DISASSEMBLY
3-1. CD door ·············································································· 6
3-2. CD Mechanism Deck ························································· 6
3-3. Front Panel ········································································· 7
3-4. Main Board ········································································· 7
3-5. Key Board··········································································· 8
3-6. Mech Deck ········································································· 8
3-7. Front Panel (B) ··································································· 9
3-8. Front Board, H/P Board······················································ 9
3-9. Front AMP Board, AMP Board, Photo Socket Board, Fuse
Board ················································································ 10
3-10. CD Tray ············································································ 10
3-11. CD Decord Board ····························································· 11
3-12. Base Unit ·········································································· 12
3-13. Cassette Lid (A)/(B) ························································· 12
4. TEST MODE ································································ 13
5. MECHANICAL ADJUSTMENTS·························· 14
6. ELECTRICAL ADJUSTMENTS ··························· 14
7. DIAGRAMS
7-1. Block Diagrams
Tuner CD Section ························································ 19
Main Section ······························································· 20
7-2. Circrit Boards Location ···················································· 21
7-3. Printed Wiring Board Main Section ······························ 22
7-4. Schematic Diagram Tuner Section ································ 23
7-5. Schematic Diagram Dolby Section ······························· 24
7-6. Schematic Diagram Tape Power Section······················· 25
7-7. Printed Wiring Board Front Section ······························ 26
7-8. Schematic Diagram Front Section································· 27
7-9. Printed Wiring Board FLD Section ······························· 28
7-10. Schematic Diagram FLD Section·································· 29
7-11. Printed Wiring Board CD Section ································· 30
7-12. Schematic Diagram CD Section ···································· 31
7-13. Printed Wiring Board Center/Rear AMP Section ··········32
7-14. Schematic Diagram Center/Rear AMP Section············· 33
7-15. Schematic Diagram Front AMP Section ······················· 34
7-16. Printed Wiring Board Front AMP Section ···················· 35
7-17. IC Block Diagrams ···························································36
7-23. IC PIN Function Description············································ 40
8. EXPLODED VIEWS
8-1. Cabinet Section································································· 42
8-2. Front Panel Section-1 ······················································· 43
8-3. Front Panel Section-2 ······················································· 44
8-4. CD Mechanism Deck Section-1 ······································· 45
8-5. CD Mechanism Deck Section-2 ······································· 46
8-6. Base Unit Section (KSM-213ECM)································· 47
9. ELECTRICAL PARTS LIST ··································· 48
TABLE OF CONTENTS

4
SECTION 2
GENARAL
12 34
5
6
7
8
9
0
!¡
!™
!£!¢
!∞
!§
!¶
!•
!ª
@º
@¡
@™
@£
@¢
@∞
@§
@¶
@•
@ª
#º
#•
#¶
#§
#¢
#∞
#£
#™
#¡
@¢ Fluorescent indicator tube
@∞ ENTER/NEXT button and indicator
@§ REC button and indicator
@¶ PAUSE button and indicator
@• CD SYNC button
@ª VOLUME knob
#º +, )button and indicator
#¡ JOG dial
#™ –, 0button and indicator
#£ TIMER SELECT button and indicator
#¢ CLOCK/TIMER SET button
#∞ DISPLAY button
#§ DEMO button
#¶ GROOVE button and indicator
#• Remote sensor
11/u(Power) button and indicator
2DISC 1 to 3 button and indicators
3DISC SKIP button
4§(CD) button
5CD disc tray
6pbutton
7CD, ^button and indicator
8TUNER/BAND button
9FILE SELECT button
0DBFB button
!¡ DSP button
!™ §(deck B)
!£ Tape deck B
!¢ Tape deck A
!∞ §(deck A)
!§ DOLBY PRO LOGIC button
!¶ PHONES jack
!• REPEAT, STEREO/MONO button
!ª PLAY MODE, TUNER MEMORY button
@º EDIT DIRECTION button
@¡ FUNCTION button
@™ TAPE A, 9and (buttons and indicators
@£ TAPE B, 9and (buttons and indicators

5
This section is extracted
from instruction manual.

6
3-2. CD MECHANISM DECK
7 CD mechanism deck
4 Flat type wire (CN705)
2 Screw (PTPWH 3 × 10)
1 Screw (PTPWH 3 × 10)
3 Screws (BVTP 3 × 10)
6 Connector (CN703)
5 Harness (CN304)
SECTION 3
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
3-1. CD DOOR
1 Pull out the CD tray and remove the CD door
with releasing claws into the direction of arrow.
2 CD door
Three claws

7
3-3. FRONT PANEL
7 Screws (BVTP 3 × 14)
2 Connector (CN502)
5 Screw
(PTPWH 3
× 10)
1 Connector (CN301)
(CN302)
6 Screws
(BVTP 3
× 10)
4 Screw (PTPWH 3 × 10)
3 Screws (BVTT 3 × 10)
9 Front panel
8 Screws (BVTP 3 × 10)
3-4. MAIN BOARD
6 Screws (BVTP 3 × 10)
4 Screw (BVTP 3 × 8)
5 PWB stopper
1 Harness (CN303)
7 MAIN boar
d
2 Connector (CN201)
3 Connector (CN202)

8
3-6. MECH DECK, FLD BOARD
4 Screws (BVTP 3 × 10)
2 Screws (BVTP 3 × 8)
5 Connector (CN601
)
6 Connector (CN602)
3 Mech deck
1 Flat type wire (CN603)
7 FLD board
3-5. CD KEY BOARD
1 Screws (BVTP 3 × 12
)
2 CD PC board
bracket
4 Connector (CN606)
3 Connector (CN607)
6 CD KEY board
Two claws
5 Button

9
3-7. FRONT PANEL (B)
1 Screws (BVTP 3 × 10
)
2 Front panel (B)
Two claws
Three claws
Three claws
3-8. FRONT BOARD, H/P BOARD
7 Screw (BVTP 3 × 10)
5 Screws (BVTP 3 × 10)
6 Front board
2 Volume knob
1 Jog knob
9 H/P board
8 Holder
Washer
(VR602) Five claws
Washer
(VR601)
4 Nut(VR602)
3 Nut
(VR601)

10
3-10. CDTRAY
1 Screw (+P 2.6 × 4)
2 Bracket
4 Bracket
5 Flat type wire
(CN06)
3 Screw (+P 2.6 × 4)
6 CD tray
3-9. FRONT AMP BOARD, AMP BOARD, PHOTO SOCKET BOARD, FUSE BOARD
3 Screws (BVTP 3 × 10)
7 Photo socket board
5 Front amp/Amp board
1 Connector (CN501)
2 Screws (BVTP 3 × 10)
Power cord
HOW TO SET THE
POWER CORD
9 Screws (BVTP 3 × 10)
8 Remove the four
solderings
4 Screws (P 4 × 12)
0 Fuse board
6 Screw (BVTP 3 × 10)

11
3-11. CD DECORD BOARD
1 Two screws (+BVTP 3 × 10)
2 Two screws (+BVTP 3 × 10)
Two claws
0 CD decord board
3 Belt
6 Flat type wire (CN06)
5 Flat type wire (CN01)
4 Connector (CN05)
9 Connector (CN03)
7 Two screw
(+BVTP 3
× 10)
8 Sheet
Claw
Claw

12
3-12. BASE UNIT
3-13. CASSETTE LID (A)/(B)
1 Two screws (+KTP 3 × 8)
2 Screw (+PTPWH 3 × 8)
3 UD-gear
4 Screw (+PTPWH 2.6 × 8)
5 UD-cam
6 Spring
7 Spring
8 Spring
9 Base unit
1 Remove the cassette lids in the direction of arrow.
Four claws
Four claws

13
SECTION 4
TEST MODE
Initialization
Press the STOP button and POWER OFF button at the same time.
All preset data is re-set to the initial (default) value.
Model display
Press the STOP button and DISC 1 button at the same time.
Model name is displayed.
Destination display
Press the STOP button and DISC 2 button at the same time.
Destination is displayed.
Version display
Press the STOP button and DISC 3 button at the same time.
Version number of the microprocessor is displayed.
CD aging mode
Press the STOP button and DISC SKIP/EX-CHANGE button at the
same time.
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
Press the STOP button and PLAY A button at the same time.
Insert a commercially available cassette tape (10 min) to the decks
A 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
Press the STOP button and OPEN/CLOSE button at the same time.
The 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
buttonispressed. 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
Press the STOP button and DBFB button at the same time.
All displays are turned ON.
Balance adjustment value
Press the STOP button and DISPLAY button at the same time.
The balance adjustment value is displayed.
Key check
Press the STOP button and FILE SELECT button at the same time.
Function of the pressed key is displayed.

14
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 5
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 6
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

15
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 12)
Tape Speed Adjustment (Deck A)
Procedure:
1. Mode: Playback
2. Adjust the SFR601 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)
[FLD 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
+
–
CN604
SFR601

16
TUNER SECTION 0 dB=1µV
AMTuningVoltage Adjustment
Procedure:
1. Set the reception frequency of the unit to 530 kHz.
2. Adjust L107 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 17)
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 TC101 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 17)
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.

17
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
TC101
TP1
IC103 FE101
L107
SFR101
FM Tuned Level
AM Tuning
Voltage
AM Tracking
JK101

18
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 whenoptical block 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

HCD-RXD7AV
1919
7-1. BLOCK DIAGRAMS
TUNER/CD SECTION
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 CLOK DATA
CLK
XLT
DAT
SE
CIN
FOK
RF
SERIAL
I/F
PWM 67
70
71
NL
XTA1
XTA0 X701
SYS M
R-CH
CD DIGITAL
SIGNAL PROCESSOR
IC702
16
:FM
:CD
• SIGNAL PATH
14
7
8
4
2
1
6
10
DETECTOR
16
OSC
FM
JK101
3
8RF MIX 1
4
5
FM FRONT END
FE101
RF IF
AMP
Q101
CF101
10.7MHz CF102
10.7MHz
L107
MW OSC
L104
AM ANT
AM RF
AMP
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
Q103
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
Q109
TU L
ST IND
TU MUTE
DO
A
MAIN
SECTION
(Page 20)
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
CONTROL
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
15
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
(Page 20)
:AM
• RCH is omitted
SFR101
SENS2
LOCK
VT
2
DATA
26
SENS2
19
LOCK
16.9344MHz
2
L MUTE
53
D OUT DIGITAL
OUT
PH701
B
MAIN
SECTION
(Page 20)
CLK
DATA IN
Q104
D105
8
AM/FM
PH DET
11
AM
TC101
TUB+
TUB+
SECTION 7
DIAGRAMS

HCD-RXD7AV
2020
MAIN SECTION
HP901
PB
HEAD
DECK A
HRP901
REC/PB
HEAD
DECK B
R CHR CH
R CH
PLAY/REC
CONTROL
Q203, 205
PLAY/REC
CONTROL
DRIVE
Q207
PLAY/REC
CONTROL
D201
L201
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
AMS
Q210,211
D418
D419
D202
: FM
: CD
• Signal Path
• RCH is omitted
C
CD
SECTION
(Page 19)
TU L
ST IND
TU MUTE
DO
Q513
Q411
4
PROTECT
DET
1 6
IC503
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
SWITCH
Q603,604
62
TU MUTE
28
FM ST IND
15
CLOCK
63
SYSTEM MUTE
64
POWER SW
19
LATCH
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
S03
DISC
COUNTER
S04
TURNTABLE
OPERATION
S01
CD DECK
UP/DOWN
KEY
MATRIX
P1 P24
KI0 KI2
FLD601
FLD DISPLAY
SYSTEM CONTROLLER/
FLD DRIVER
IC601
+5.6V
REG
Q401
SITCHING
Q103
TU +5V
+12V
+7.5V
REG
Q502
CD +7.5V
+12V
REG
Q501 RECT
D501-504
AC OFF
DET
Q509
Q510
RECT
D403
-VCC1
+VCC1
-27V
REG
Q406
-27V AC
IN
T001
AC4.8V
AC4.8V
16
A
TUNER
SECTION
(Page 19)
: PB (DECK A)
: PB (DECK B)
: REC (DECK B)
Q207
Q201
CE
CLK
DI
12
LOCK
MUTE
Q208,209
BIAS
SWITCH
Q252,253
6
TAPE (L)
13
TUNER (L)
12
CD (L)
11
B
CD
SECTION
(Page 19)
CD L
LINE AMP
IC301 6L OUT
BUS REGISTER
IC602
REC MUTE
13 A/B
11 BIAS
12 REC
14
DI
2CLK
3
STB
1
DI
CLK
SCL
30
4PLAY
5SOL A
6
SOL B
SOL A
DRIVE
Q610,613
M+12V
SWITCH
Q608,611
+12V
SOL B
DRIVE
Q609,612
SHIFT REGISTER
IC603
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
D515
RECT
D402
-VCC2
+VCC2
+5.6V
65 8829 31 G1 G13
Q'S
10
DATA IN
DATA
SENS2
LOCK
13
CLOK
43
SENS2
37
AMS
10
S/L
9
DATA IN
L
R
MD/VIDEO R CH
MD (L)
14
: MD
15MUX OUT/L AMP
Q303
DET
IC304
4
B REC REV
Q407 Q301
MUTE
Q419
MUTE
L
RMD/VIDEO
R CH
µCON B+
CD +5V
D602
D601
RESET
SWITCH POWER DOWN DET
Q601
Q602 2
RM601
REMOTE
CONTROL
RECEIVER
RESET
38
POWER DOWN
6
REMOTE
8
VCC
21
.100 90
.
57
DOLBY ON/OFF
59
DOLBY NR
32
VACS
36
SPEANA 4
SPEANA
35
SPEANA 3
34
SPEANA 2
33
SPEANA 1
LED DRIVE
IC701
4
DI
CLK
LED706-713
IC702
3
4
LED
DRIVE
Q703-708
LED714-718
LED701-703
2
12 LED
DRIVE
Q701,702 LED704
11
14
13
5
10
.
.
16
15
11
5
9
18
LATCH
C MUT
R MUT
17
DATA
SDA
1
16
IN L
LTIN
VRSWIN
74
LOUT
1
DATA
22
REQ
24 SCK
23
DATA
SCK
DOLBY PROLOGIC
SURROUND DECODER
IC302
CVOLOUT
9
SVOLOUT
17
SWVOLOUT
IC304
IC303
Q312
Q520
MUTE
Q313
Q522
MUTE
Q308 Q310
61
MD MUTE
58
DOLBY HI
16
CE
60
2CH OUT
MUTE
DBFB
DBFB IC306
IC305
OVER LOAD
DETECTOR
OVER LOAD
DETECTOR
Q581 OVER LOAD
DET SWITCH
Q505
Q503
OVER LOAD
DETECTOR
Q511
POWER
AMP
IC502
OVER LOAD
DET SWITCH
Q515
OVER HEAT
DETECTOR
Q516,RH501
PROTECTOR
Q412
SWITCH
SWITCH
Q413 RELAY
DRIVE
Q414
RELAY
DRIVE
Q415
RL402
RL403
L
R
L
R
REAR
JK402
CENTER
PHONES
JK403
R CH
+12V
JK303
SUB WOOFER
BUFFER
Q317
Q319
MUTE
IC304
FAN
DRIVE
Q508
FAN
CONTROL
Q517 FAN
RELAY
DRIVE
Q416
+7.5V
SWITCH
Q405
AU +12V
-12V
REG
Q403
-12V
S701-714
S718-728
S731-736
CD ENCODER A
54
CD ENCODER B
55
VR602
CD ENCODER
AB
D510
D516
LED705
R CH
R CH
Q321
MUTE
D305
D305
R CH
D417
2
3
R CH
R CH
REAR
R CH
R CH
D512
REAR
R CH
Q305
Q320
LED DRIVE
DI
CLK
80 SWIN
79 SLIN
77 CIN
76
LIN
72
IC308
2 1
4
5
13
3
L
R
FRONT
L
R
REAR
CENTER
SW
JK301
REAR
R CH
R CH
SL
L
C
S
M
L
L
C
SL
SW
M
Q381
10 6
POWER
AMP
IC501
18 20
POWER
AMP
IC501
12 8
REAR
R CH
3
15