Sony HCDGRX-3 Service manual
HCD-GRX3/RX55/R300
SERVICE MANUAL
Ver 1.1 2001. 11
HCD-GRX3/RX55/R300 are the tuner, deck,
CD and amplifier section in MHC-GRX3/
RX55/R300.
photo : HCD-GRX3
Model Name Using Similar Mechanism HCD-G101
CD
SECTION
TAPE DECK
SECTION
CD Mechanism Type CX3
Base Unit Type KSM-213BCM
Optical Pick-up Type KSS-213B/S-N
Model Name Using Similar Mechanism NEW
Tape Transpor Mechanism Type
US Model
Canadian Model
HCD-RX55
E Model
HCD-GRX3/R300
Australian Model
HCD-GRX3
CWB44RR10
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS:
(U.S.A. model only)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
with 6 Ω loads both channels driven, from 70 – 20,000 Hz; rated 35 W per
channel minimum RMS power, with no more than 0.9% total harmonic
distortion from 250 mW to rated output.
Amplifier section
North American model
Continuous RMS power output
50 W + 50 W (6 Ω at 1 kHz, 10% THD)
Other models
The following measured at AC 110, 220 V 60 Hz;
DIN power output (Rated) 35 W + 35 W (6 Ω at 1 kHz, DIN)
Continuous RMS power output (Reference)
45 W + 45W (6 Ω at 1 kHz, 10% THD)
The following measured at AC 120, 240 V 60 Hz;
DIN power output (Rated) 40 W + 40 W (6 Ω at 1 kHz, DIN)
Continuous RMS power output (Reference)
50 W + 50W (6 Ω at 1 kHz, 10% THD)
Peak music power output (Reference)
600 W
Inputs
MD IN (phone jacks) : voltage 450 mV, impedance 47 kΩ
Outputs
MD OUT (phone jacks) : voltage 250 mV, impedance 1 kΩ
PHONES (stereo phone jack) :
accepts headphones of 8 Ω or 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. 44.6 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
DIGIT AL 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 (± 3dB), using Sony
TYPE Ι cassette
— Continued on next page —
MINI Hi-Fi COMPONENT SYSTEM
9-922-804-12
2001K1600-1
© 2001.11
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
SERVICING NOTE
Antenna terminals 75 Ω unbalanced
Intermediate frequency 10.7MHz
AM tuner section
Tuning range 531 – 1,602 kHz (with AM tuning interval set
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
General
Power requirements
North American model:120 V AC, 60 Hz
Mexican model: 120 V AC, 50/60 Hz
Australian and South African models:
Other models: 110 – 120 V or 220 – 240 V AC,
Power consumption 100 W
Dimensions (w/h/d) incl. projecting parts and controls
Mass Approx. 9.5 kg (20 lb 15 oz.)
Supplied accessories: AM loop antenna (1)
Design and specifications are subject to change without notice.
at 9 kHz)
530 – 1,710 kHz (with AM tuning interval set
at 10 kHz)
220 – 240 V AC, 50/60 Hz
50/60 Hz (adjustable with voltage selector)
Approx. 280 × 320 × 400 mm
1
(11
/8 × 12 5/8 × 15 3/4 in)
Remote (1)
RM-SG7 (for HCD-GRX3/RX55)
RM-SG7B (for HCD-R300)
FM lead antenna (1)
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
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 pickup block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation 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 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.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER
PRODUCT MARKING is
located on the rear exterior.
This caution
label is located
inside the unit.
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.
— 2 —
SAFETY CHECK-OUT
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 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 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-operated AC 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)
T o Exposed Metal
Parts on Set
AC
0.15
µ
F
1.5 k
Ω
Voltmeter
(0.75 V)
TABLE OF CONTENTS
1. GENERAL ..........................................................................4
2. DISASSEMBLY
2-1. Upper Cover and CD Door................................................. 5
2-2. Front Panel .........................................................................5
2-3. Main Board ......................................................................... 6
2-4. Amp Board ......................................................................... 6
2-5. CD Tray .............................................................................. 7
2-6. CD Decoder Board ............................................................. 7
2-7. Base Unit ............................................................................ 8
2-8. Cassette Door .....................................................................8
3. MECHANICAL ADJUSTMENTS ............................... 9
4. ELECTRICAL ADJUSTMENTS .................................9
5. DIAGRAMS
5-1. Circuit Boards Location ................................................... 14
5-2. Block Diagrams
• Deck Section ................................................................... 15
• CD Section ...................................................................... 17
5-3. IC Block Diagrams ........................................................... 19
5-4. Printed Wiring Board —CD Section — ........................... 24
5-5. Schematic Diagram — CD Section — ............................. 29
5-6. Schematic Diagram —Panel Section — .......................... 33
5-7. Printed Wiring Board —Panel Section —........................ 37
5-8. Printed Wiring Board — Deck Section — ....................... 42
5-9. Schematic Diagram —Deck Section — ........................... 47
5-10. Schematic Diagram —Main Section — ........................... 51
5-11. Printed Wiring Board —Main Section — ........................ 55
5-12. Printed Wiring Board — Amp Section — ........................ 60
5-13. IC Pin Function ................................................................ 65
Earth Ground
Fig. A. Using an A C v oltmeter to check A C leakage.
6. EXPLODED VIEWS
6-1. Cabinet Section................................................................. 67
6-2. Front Panel Section .......................................................... 68
6-3. Cassette Mechanism Deck Section................................... 69
6-4. CD Mechanism Deck Section 1 ....................................... 70
6-5. CD Mechanism Deck Section 2 ....................................... 71
6-6. Base Unit Section (KSM-213BCM)................................. 72
7. ELECTRICAL PARTS LIST ........................................ 73
— 3 —
LOCATION OF PARTS AND CONTROLS
SECTION 1
GENERAL
#¡
#º
@ª
@•
@¶
@§
@∞
@¢
@£
@™
@¡
@º
1
23
4
5
6
7
8
9
0
!¡
!™
!£
!¢
!∞
!ª
1 DISC 1 button
2 DISC 2 button
3 DISC 3 button
4 DISC SKIP button
5 § OPEN/CLOSE button
6 · (TAPE B)
7 · ∏ (CD) button
8 TUNER/BAND button
9 r REC button
!º ∏ PAUSE button
!¡ CD SYNC button
!™ STEREO/MONO button
!£ VOLUME
!¢ REPEAT/MEMORY button
!∞ ‚ + button
!§ DECK B
!§
!¶!•
!¶ JOG DIAL
!• π (STOP) button
!ª DECK A
@º º – button
@¡ DBFB button
@™ SURROUND button
@£ FILE SELECT button
@¢ DISPLAY/DEMO button
@∞ EDIT/DIRECTION button
@§ PLAY MODE button
@¶ FUNCTION
@• ª (TAPE A) button
@ª I/u (POWER) button
#º · (TAPE A) button
#¡ ª (TAPE B) button
— 4 —
SECTION 2
s
e
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. UPPER COVER AND CD DOOR
6
CD door
2
Three screws
claws
4
Upper cover
3
Seven screw
1
Three srews
2-2. FRONT PANEL
5
Pull out the CD tray and remove the
CD door with releasing craws into the
directioin of arrow.
4
Flat type wire
(CN09)
5
Front panel
1
Three screws
— 5 —
2
Connector
(CN302)
3
Flat type wir
(CN09)
2-3. MAIN BOARD
5
MAIN board
4
Harness (CN08)
3
Harness (CN302)
2
Harness (CN701)
1
Five screws
2-4. AMP BOARD
5
AMP board
4
Three screws
1
Two screws
2
Three screws
— 6 —
3
Three screws
e
2-5. CD TRA Y
2
Bracket
1
Screw
6
CD tray
4
Bracket
5
(CN06)
3
Screw
Flat type wir
2-6. CD DECODER BOARD
6
CD decoder board
claws
2
Two screws
3
Flat cable
5
Connector
4
Flat cable
— 7 —
1
Two screws
2-7. BASE UNIT
5
UD-Cam
4
Screw
2
3
Screw
UD-gear
7
Spring
2-8. CASSETTE DOOR
8
Spring
9
Base unit
6
Spring
1
Two screws
— 8 —
Cassette door
(Note: Four claws are used.)
SECTION 3
MECHANICAL ADJUSTMENTS
SECTION 4
ELECTRICAL ADJUSTMENTS
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
Torque
FWD
FWD
back tension
FF/REW
Torque meter
CQ-102C
CQ-102C
CQ-201B
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)
DECK SECTION 0 dB=0.775V
1. Demagnetize the record/playback head with a head
damagnetizer.
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 RCH.
Tape
P-4-A100
WS-48B
Record/Playback Head Azimuth Adjustment
(Deck A, Deck B)
Note: Perform this adjustments for both decks.
Procedure:
1. Mode : Playback
test tape
P-4-A100
(10kHz, –10dB)
Signal
10 kHz, –10 dB
3 kHz, 0 dB
SPEAKER
terminal (JK301)
Used for
Azimuth Adjustment
Tape Speed Adjustment
level meter
set
+
–
— 9 —
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.
L-CH
peak
screw
position
R-CH
peak
output
level
within
2dB
L-CH
peak
R-CH
peak
within 2dB
screw
position
3. Mode: Playback
test tape
P-4-A100
(10kHz, –10dB)
SPEAKER
terminal (JK301)
(L-CH)
oscilloscope
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location:
Adjustment screws
REC/PB head (deck A)
or PB head (deck B)
Tape Speed Adjustment (Deck A)
Procedure:
1. Mode: Playback
test tape
WS-48B
(3kHz, 0dB)
set
frequency counter
+
–
L
set
R
SPEAKER
terminal (JK301)
(R-CH)
Waveform of oscilloscope
in phase 45˚ 90˚ 135˚ 180˚
good
wrong
SPEAKER
terminal (JK301)
2. Adjust the SFR501 so that the frequency counter reads 3,000
Hz ± 90Hz.
Adjustment Location: DECK board
Sample Value of Wow and flutter
W. RMS (JIS) within 0.3%
(test tape: WS-48B)
[DECK BOARD] — Component side —
Tape Speed
CN501
SFR501
— 10 —
TUNER SECTION 0 dB=1µV
AM T uning Voltage Adjustment
Main board
TP1
F
G
VT
DC voltmeter
+
–
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 12)
AM Trac king Adjustment
loop antenna
AM RF SSG
30% amplitude
modulation by
400 Hz signal
60 cm
Field strength dB (
µ
V/m) =SSG output level dB (µV/m) –26 dB.
loop antenna
(Supplied accessories)
set
AM ANTENNA
terminal (JK101)
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.
FM T uning Voltage Adjustment
Main board
TP1
IF
G
VT
DC voltmeter
+
–
Procedure :
1. Set the reception frequency of the unit to 87.5 MHz.
2. Adjust L103 for 1.2 ± 0.05V reading on the DC voltmeter.
3. Set the reception frequency of the unit to 108 MHz.
4. Confirm that the voltage reading on the DC voltmeter is within
7.8 ± 0.5V.
5. Adjust CT102 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 12)
Adjustment Location: MAIN board (See page 12)
— 11 —
FM Trac king Adjustment
FM Tuned Level Adjustment
Procedure:
FM RF SSG
set
SPEAKER terminal (JK301)
FM ANTENNA terminal (JK101)
Carrier frequency: 90 MHz, 106 MHz
Modulation : AUDIO 1kHz, 75kHz deviation (100%)
Output level : 20 dB (at 75
Ω
open)
oscilloscope
1. Tune the set to 90 MHz.
2. Adjust L102 so that when the waveform on the oscilloscope is
maximum, no noise appears.
3. Tune the set to 106 MHz.
4. Adjust CT101 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
FM RF SSG
75
Ω
coaxial
set
Carrier frequency : 98 MHz
Modulation : AUDIO 1 kHz, 75 kHz
Output level : 28 dB (at 75
deviation (100%)
Ω
open)
FM ANTENNA terminal
(JK101)
Procedure:
1. Supply a 28 dB 98 MHz signal from the ANTENNA 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 —
IC103
FM Tyned Level
SFR101
TP1
IC102
AM Tuning
Voltage
L105
FM Tuning
Voltage
CT102
IC101
L103
L102
CT101
AM
Tracking
L104
JK101
FM
Tracking
JK301
— 12 —
CD SECTION
Note:
1. CD Block is basically constructed to operate without
adjustment. Therefore, check each item in order given.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10MΩ impedance.
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 optical block is replaced.
Focus Bias Adjustment
CD DECODER
board
CN12
FEO
VC
Procedure:
1. Connect DC voltmeter to test point CN12 (FEO), (VC) on CD
DECODER board.
2. Turned Power switch on.
3. Put disc (YEDS-18) in and stop.
4. Adjust VR01 so that the DC voitmeter reading is 0 ± 20 mV.
DC voltmeter
+
–
RF Level Check
CD DECODER
board
TP (RF)
CN12 (VC)
oscilloscope
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.
VOLT/DIV: 200 mV
TIME/DIV: 500 nS
level: 1.0 Vp-p
+0.3
–0.2
Adjustment Location: CD DECODER board
Adjustment Location: CD DECODER board
Focus Gain Adjustment (VR02)
This gain has a margin, so even if it is slightly off.
There is no problem.
Therfore, do not perform this adjusment.
Please note that it should be fixed to mechanical center position
when you moved and do not know original position.
Adjustment Location
[CD DECODER BOARD] — Component side —
Focus Gain
VR02
IC03
VR01
R07
CN12
IC01
RF Level
Focus Bias
— 13 —
5-1. CIRCUIT BOARDS LOCATION
d
SW (C) board
SECTION 5
DIAGRAMS
SW (D) board
SW (B) board
MOTOR (6P) (S) board
CD BUTTON board
PANEL board
MAIN board
DECK board
MOTOR board
SW (A) board
CD DECODER boar
FUSE board
AMP board
VOLUME board
— 14 —
5-2. BLOCK DIAGRAMS
HCD-GRX3/RX55/R300
— DECK SECTION —
JK301
MD L
LINE
OUT L
TAPE B
HP901
PB
HEAD
R CHR CH
TAPE A
HRP901
REC/PB
HEAD
HE901
ERASE
HEAD
TU L
ST IND
A
TU MUTE
TUNER
SECTION
B
CD
SECTION
MECHA BLOCK
MTR +12V
SOL A
SOL B
SOL B
MOTOR H
MOTOR L
REC FWD
REC REV
PHOTO A
PHOTO B
MODE A
MODE B
HALF A
HALF B
16
CD L
SCOR
SENS
SQSO
XLAT
SQCK
DATA
COUNT
FOK
CLK
STB
DO
DI
CE
Q501,502
MOTOR
B+ SW
+12V
Q505,506
SOL A
DRIVE
Q503,504
SOL B
DRIVE
SFR 501
TAPE
SPEED
R CH
Q203,205
PLAY/REC
CONTROL
Q207
PLAY/REC
CONTROL
DRIVE
D202
Q208,209
BUS REGISTER
4
PLAY
5
SOL A
6
SOL B
SHIFT REGISTER
3
F REC
4
R REC
5
PHOTO A
6
PHOTO B
11
A MODE
12
B MODE
13
A HALF
14
B HALF
Q201
PLAY/REC
CONTROL
CONTROL
SWITCH
IC501
REC MUTE
IC502
D201
REC
BIAS
STB
CLK
SELECTOR
IC301
DI
CLK
36
ALATCH
Q605,615
SW
11
9
10
12
CONTROL
CLK14DI15CE
13
CLKDICE
LED DRIVE
IC603
1
12
3
17
2
LED DRIVE
IC602
13
2
11
3
12
4
10
5
SYSTEM CONTROLLER/
FLD DRIVER
PIC UP55PIC DOWN56TRAY OPEN
MODE
13
S01
CD DECK
UP/DOWN
DET
IC601
IC302 (1/2)
11 10
IC302 (2/2)
9 8
Q551,552
AMS
MUTE
24
4
DI1
SCOR
TU MUTE
VR DOWN
45
A
B
12
6
47
61
FM ST IND
JOG A49JOG B
VR612
MULTI JOG
Q417
AMS
50
62
6
TAPE REC
B
Q301
SERI MUTE
SW101
10k
5
SURROUND
+5.6V
9k
REC/PB
EQ AMP
IC201
3
1
2
9
BIAS
OSC
Q251
Q251
43
42
41
+12V
26
DECK STB
DECK DATA
DECK S/L
TAPE A/B
STB
L251
BIAS OSC
R CH
Q252,253
BIAS
SWITCH
14
12
A/B
11
13
S/I
Q'S
QH
S/L
DO
2
CLK
3
10
1
2
9
1
CE
21CE22
CLK
CLK
A/B
REC OUT
19
DO
23DO52
PB OUT
MIX OUT
FOK
12
12
4.19MHz
53
COUNT
X601
5
6
11
10
Q213
REC
MUTE
18
19
51
20
SQCK
38
XLAT
SENS
SQSO
VR UP
44
A
VR601
VOLUME
17
DATA
X211X1
LT COM
4
Q307
SURROUND
CONTROL
Q310
LED606-611
LED605
Q606,607
LED
DRIVE
Q608-613
LED
DRIVE
OPEN/CLOSE
3 2
LED601-604
TRAY CLOSE
59
60
S02
TRAY
DET
DISC COUNT
57
S03
DISC
COUNTER
DET
7
8
DBFB HIGH
DBFB NORMAL
3
SYSTEM MUTE
TURN TABLE
58
S04
TURNTABLE
OPERATION
DET
1
Q602
Q602
NORMAL
Q603
MUTE
SWITCH
RESET
SWITCH
10
Q331
HIGH
Q308
RESET
KI0 KI4
KEY
MATRIX
S601-628
LINE AMP
IC303
4
3
Q604
MUTE
Q601
Q601
2
POWER
DOWN DET
15
POWER DOWN
Q410
MUTE
DRIVE
RM601
CONTROL
RECEIVER
3
REMOTE
2
39
HP AMP
IC401
3
D602
REMOTE
64 78
1
Q408
MUTE
Q709
MUTE
+30V
-30V
-12V
-27V
+7.5V
+11.5V FILTER
+11.5V
(SWITCHED)
P1 P21
.
81 8533 29
FLD601
FLD DISPLAY
POWER AMP
IC401
1
G1 G15
100 86
10
Q401
-12V
REG
Q702
+7.5V
REG
Q409
+5.6V
REG
Q403
Q415,416
SITCHING
2
POWER
Q703
-27V
REG
Q701
+12V
REG
Q713
P MUTE
CONT
Q706
D718
D720
Q708
1
2
Q714
AC OFF
DET
D701
RECT
D731,732
VOLTAGE
DOUBLER
D705-708
RECT
+12V
IC402
SPEAKER
RELAY
DRIVE
4
Q404
AC3.4V
AC3.4V
R CH
SP
DET
RL701
6
PT001
AC
IN
JK303
PHONES
JK302
SPEAKER
• RCH is omitted
• Signal Path
: PB (DECK A)
: PB (DECK B)
: REC (DECK A)
: FM
: CD
: MD
— 15 — — 16 —
HCD-GRX3/RX55/R300
— TUNER/CD SECTION —
JK101
ANTENNA
75Ω
AM
DET
DET
AGC
FM
IF
FM
AM
SMET
20
FM/AM MPX
IC102
AM
OSCAMMIX
PL DET
PH DET11PH DET
TU LED
13
6
L
CF103
450kHz
14
R
15
R CH
Q117
MUTE
AM/FM
IF BUFF
12
MUTE
FM DET
MPX VCO
AM
IF
ST IND
AM/FM
DECODER
CF104
8
10.7MHz
CF105
17
19kHz
4
T102
AM IFT
2
7
10
TU L
ST IND
TU MUTE
DI
A
MAIN
SECTION
• R CH is omitted
• SIGNAL PATH
:FM
:AM
:CD
:DIGITAL OUT
1
3
FM FRONT END
IC101
RF MIX
OSC
D106
CF101
10.7MHz
Q102
AMP
Q108
AM RF
AMP
Q112,113
L.P.F
7.2MHz
X101
Q101
RF IF
AMP
IF
G
VT
TP1
AM/FM
TUNING
VOLTAGE
19
21
17
24
1
SFR101
FM
TUNED
LEVEL
FM
PD1
FM B+
XO
XI
CF102
10.7MHz
PLL
IC103
ST/MONO
MW OSC
B+
AM/FM
L CTR
R CTR
CLK
FM IF
1
MPX
16
AF DET
18
L105
OSC
23
AFC
22
AM RF
21
OSC/FMSD
24
AM
18
12
SD
SD
7
14
13
15
16
DI
5
DO
DO
3
DI
CLK
4
CE
2
CE
T101
6
8
FM OSC
L103
TUB+
Q114
B+
L101
FM
FM ANT
D105
L104
AM ANT
L102
FM RF
OPTICAL PICK-UP
DETECTOR
TRACKING
16
BLOCK
LD
PD
FOCUS
COIL
COIL
7
8
4
1
2
5
6
10
GND
VR
MOTOR
SPINDOL
MOTOR
MOTOR
MOTOR
VC
A
C
B
D
E
F
LD
PD
F+
F
T+
T
M102
SLED
M101
T/T
TRAY
+5V
M
M
M
M
F/T COIL
SL/SP MOTOR
T.T/TRAY MOTOR
DRIVER
IC03
4
F+
3
F
2
T+
1
T
REG OUT
18
SL+
17
SL
SP+
20
SP
19
T.T F IN
14
T.T+
T.T R IN
T.T
15
TR F IN
TR+
30
TR T IN
TR
31
MUTE IN
F IN
T IN
VCC
VCC
REG I
REG B
SL IN
SP IN
6
5
8
7
9
10
11
22
21
13
12
29
28
27
Q02
LD ON
SWITCH
Q01
APC
CN2
CN12
Q11
REG
42
1
45
48
35
36
39
38
33
34
TEO
FEO
ATSC
VC
PD1
PD2
E
F
LD
APC
PD
PD
FE BIAS EI
RV01
FOCUS
TRACKING
+7.5V
+5V
RF
AMP
COMAND
FE
AMP
SERIAL/
PARALLEL
CONVERTER
DECODER
FOCUS PHASE
COMPENSATION
FEO TAO
6
37 40
16
IC01 (2/2)
IC06
RV02
FOCUS
GAIN
14
67
CD RF/SERVO
PROSSESOR
IC01 (1/2)
IIL
TTL
TTL
IIL
TRACKING PHASE
COMPENSATION
13
RFO
FOK
C OUT
SENS
DATA
XLT
CLK
XRST
Q04
SWITCH
+5V
PH01
2
Q311
MUTE
VDD
D IN
GND
OPTICAL
DIGITAL
OUT
CD L
SCOR
SENS
SQSO
XLAT
SQCK
DATA
COUNT
FOK
DO
CLK
CE
STB
B
MAIN
SECTION
(Page)
3
1
CD DIGITAL
SIGNAL PROCESSOR
IC703
D/A
I/F
RF
DO
CLK
36
FOK
23
CN
14
SE
13
DAT
15
XLT
16
CLK
17
8
XRST
MDP
25
31
25
23
24
21
20
19
22
T.T/TRAY
MOTOR DRIVE
REG CONTROL
IC02
XRST
SPEED
T.T
TR+
TR
CONTRL
MUTE
DATA
CLOK
STB
4
2
3
1
6
11
714T.T+
13
14
5
CLV
SERVO
DIGITAL
CLV
EFM
DEMO.
SUB CODE
PROSSESOR
CPU I/F
XLON
CLOCK
DATA
SQCK
9 11 5 4 7 61
22
XLAT
10
SQSO
SENS
SCOR
SERIAL
I/F
MUTE
S05
LIMIT
SWITCH
PWM
PWM
PWM
PWM
CLOCK
GEN.
SPOA
18
D OUT
XTA1
XTA0
61
NL
NR
MIX AMP
IC05
70
2
1
3
L
69
77
R
R-CH
78
73
X701
74
— 17 — — 18 —
5-3. IC BLOCK DIAGRAMS
+
–
3
6
9
12
15
2
5
8
11
14
1
4
7
10
13
28
25
22
19
16
29
26
23
20
17
30
27
24
21
18
+
–
+–+
–
LATCH
DECODER
CONTROL
SHIFT
REGISTER
–
+
LVROUT
LVRIN
LTOUT
LTCOM
LT4
LT3
LT2
LT1
L4
L3
L2
L1
VDD
CL
DI
RVROUT
RVRIN
RTOUT
RTCOM
RT4
RT3
RT2
RT1
R4
R3
R2
R1
VREF
VSS
CE
CH2/A CH2/B NF VCC CG NF ALC
METAL
OUT
PRE
OUT
TAPE A
/TAPE B
REC
OUT
REC
IN
CH1/A CH1/B NF GND1 M/H NF
CH2
CH2
ALC
M/N
CH1
GNDGND
CH1
+
–
+
–
+
–
+
–
A/B
GNDMETAL
OUT
PRE
OUT
MIX
OUT
REC
OUT
REC
IN
IREF
VREF2
VREF1
24 23 22 21 20 19 18 17
16
15 14 13
123456789101112
HCD-GRX3/RX
IC03 (CD DECORD BOARD) BA5941FP
IN4B
IN4A
27
28
1 2
VCC
BIAS IN
IC02 (CD DECORD BOARD) TC9173P
CONTROL
T.T(M)
POSI.1
POSI.2
T.T.SW
GND
MUTE
XRST
1
2
3
4
5
6
7
8
IN3B
26
3
IN1B
DRIVER
IC01 (CD DECORD BOARD) CXA1782BQ IC101 (MAIN BOARD) LA1186
PHD2
37FE BIAS
38F
39E
40EI
41VEE
42TEO
43LPFI
44TEI
45ATSC
46TZC
47TDFCT
48VC
PHD1
36
35 34
IN3A
OP OUT
OP IN (–)
OP IN (+)
24
25
–
+
+
–
4
5
IN1A
IN2B
LATCH
23
6
IN2A
C
22
+
–
–
+
+
–
7
SERIAL I/O
CONTROL
GND
GND
NC
VCC
T
21 20
MUTE
8
GND
LATCHLATCH
NC
9
MUTE
19
Vcc
VccVcc
10
VCC
DRIVER
OUT3A
18
–
+
LEVEL SHIFT
LEVEL SHIFT
+
–
11
OUT2A
+
+
12 13
16
VDD
15
STB
14
CLOK
DATA I
13
12
DATA 0
11
LOADING
M-
10
LOADING
M+
SENSOR
9
OUT3B
–
–
OUT2B
OUT4A
1617
–
+
LEVEL SHIFT
LEVEL SHIFT
+
–
OUT1A
+
+
OUT4B
15
–
–
14
OUT1B
— 19 — — 20 — — 21 — — 22 — — 23 —
F IV AMP
BAL1
BAL2
TOG1
TOG2
• WINDOW COMP
PHD
–
+
–
+
APC
+
RF IV AMP1
RF IV AMP2
–
+
–
+
E IV AMP
BAL3
TOG3
ATSC
–
+
LD
33
–
–
+
+
–
FE AMP
+
–
TE AMP
1
FEO
RF M
32
–
+
–
+
LEVELS
+
–
FOK
TTL
IIL
FZC COMP
DFCT
3
2
FEI
FDFCT
DFCT
FS4
31
–
–
+
–
+
–
+
+
–
TZC COMP
RF O
–
+
RF I
30
–
+
+
+
–
MIRR
• IIL DATA RESISTOR • INPUT SHIFT RESISTOR
TOG1-3 FS1-4 TG1-2 TM1-7 PS1-4
BAL1-3
–
+
HPF COMP LPF COMP
• FCS PHASE
COMPENSATION
TM1
5
4
FLB
FGD
–
+
FS2
+
–
6
FE O
+
–
• ADDRESS DECODER
• OUTPUT DECODER
TG1
FS1
7
FE M
CB
29CP28
DFCT
• TRACKING
• PHASE
COMPENSATION
9
8
SRCH
TGU
–
TM7
TG2
+
TM6
TM5
TM4
TM3
CC126CC225FOK
27
–
+
24 SENS
IIL
TTL
23 C. OUT
22 XRST
TTL
21 DATA
20 XLT
IIL
19 CLK
18 VCC
• ISET
• F SET
11
10
TG2
FSET
TM2
17 ISET
–
16 SL 0
+
15 SL M
14 SL P
+
1312TA O
–
TA M
IC201 (MAIN BOARD) TA8189N
IC301 (MAIN BOARD) LC75392
1
RF IN
2
3
4
5
6
7
8
9
RF
VREF
MIX
REG
OSC BUF
BYPAS
MIX IN
GND
GND
IF
AFC
OSC
VCC
IC602 (PANEL BOARD) BU2092
CONTROL
CIRCUIT
2 3
1
VSS
DATA
CLOCK
4
LCK
12 BIT
SHIFT
REGISTER
12 BIT
STORAGE
REGISTER
VDDOEQ11
1718
Q10Q9Q8Q7Q6
OUTPUT
BUFFER
(OPEN DRAIN)
5 6 7 8 9
Q0
IC603 (PANEL BOARD) BU2114
18
VDD
17
O1
SIN
1
CK
2
3
LATCH
SOUT
4
5
EN
RST
6
GND
7
8
GND
Q5
1016 15 14 13 12 11
Q4
Q3
Q2
Q1
ENABLE
SHIFT
REGISTER
LATCH
16
O2
15
O3
14
O4
13
O5
12
O6
O7
11
10
O8
9
GND
Loading...