Sony HCD-R500 User manual

HCD-R500/RX55
AEP Model
UK Model
SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
MICROFILM
HCD-R500/RX55isthetuner,deck,CDand
amplifier section in MHC-R500/RX55.
SPECIFICATIONS
Model Name Using Similar Mechanism HCD-G101
CD Mechanism Type CX3
Base Unit Type KSM-213BCM
Optical Pick-up Type KSS-213B/S-N
Model Name Using Similar Mechanism NEW
CWB44RR10
CD
SECTION
TAPE DECK
SECTION Tape Transpor Mechanism Type
Amplifier section
North American model
Continuous RMS power output
50 W + 50 W (6 Ωat 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 Ωat 1 kHz, DIN)
Continuous RMS power output (Reference)
45 W + 45W (6 Ωat 1 kHz, 10% THD)
The following measured at AC 120, 240 V 60 Hz;
DIN power output (Rated) 40 W + 40 W (6 Ωat 1 kHz, DIN)
Continuous RMS power output (Reference)
50 W + 50W (6 Ωat 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 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. 44.6 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
DIGITALOUT (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 Ιcassette
Tuner section
FM stereo, FM/AM superheterodyne tuner
Photo : HCD-RX55
— Continued on next page —

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.
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.
SERVICING NOTE
NOTES ON HANDLINGTHE 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 pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
SAFETY-RELATED COMPONENTWARNING!!
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.
FM tuner section
Tuning range 87.5 – 108.0 MHz
Antenna FM lead antenna
Antenna terminals 75 Ωunbalanced
Intermediate frequency 10.7MHz
AM tuner section
Tuning range
European model:
MW: 531-1,602 kHz
(with MW tuning interval
set at 9 kHz)
LW: 153-279 kHz
(with LW tuning interval
set at 3 kHz)
Other models:
AM: 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
General
Power requirements
North American model:120 V AC, 60 Hz
Mexican model: 120 V AC, 50/60 Hz
Australian and South African models:
220 – 240 V AC, 50/60 Hz
Other models: 110 – 120 V or 220 – 240 VAC,
50/60 Hz (adjustable with voltage selector)
Power consumption 100 W
Dimensions (w/h/d) incl. projecting parts and controls
Approx. 280 ×320 ×400 mm
(11 1/8×12 5/8×15 3/4in)
Mass Approx. 9.5 kg (20 lb 15 oz.)
Supplied accessories: AM loop antenna (1)
Remote (1)
RM-SG7 (for HCD-RX55)
RM-SG7B (for HCD-R500)
FM lead antenna (1)
Design and specifications are subject to change without notice.
— 2 —

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
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 —

— 4 —
SECTION 1
GENERAL
LOCATION OF PARTS AND CONTROLS
1DISC 1 button
2DISC 2 button
3DISC 3 button
4DISC SKIP button
5§OPEN/CLOSE button
6·(TAPE B)
7·∏(CD) button
8TUNER/BAND button
9rREC button
!º ∏PAUSE button
!¡ CD SYNC button
!™ STEREO/MONO button
!£ VOLUME
!¢ REPEAT/MEMORY button
!∞ ‚+ button
!§ DECK B
!¶ JOG DIAL
!• π(STOP) button
!ª DECKA
@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
9
8
7
6
0
!¡
!™
!£
!¢
!∞
!§
23 45
@¶
1
@ª
@•
#º
#¡
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@§
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!¶!•

— 5 —
SECTION 2
DISASSEMBLY
2-1. UPPER COVER AND CD DOOR
Note : Follow the disassembly procedure in the numerical order given.
2-2. FRONT PANEL
1 Three srews
2 Three screws
3 Seven screw
s
4 Upper cover
5 Pull out the CD tray and remove the
CD door with releasing craws into the
directioin of arrow.
6 CD door
claws
4 Flat type wire
(CN09)
2 Connector
(CN302)
1 Three screws
5 Front panel
3 Flat type wir
e
(CN09)

— 6 —
2-3. MAIN BOARD
2-4. AMP BOARD
1 Five screws
2 Harness (CN701)
3 Harness (CN302)
4 Harness (CN08)
5 MAIN board
1 Two screws
2 Three screws
3 Three screws
4 Three screws
5 AMP board

— 7 —
1 Screw
2 Bracket
4 Bracket
5 Flat type wir
e
(CN06)
3 Screw
6 CD tray
2-5. CDTRAY
2-6. CD DECODER BOARD
1 Two screws
claws
2 Two screws
6 CD decoder board
3 Flat cable
4 Flat cable
5 Connector

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

— 9 —
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 3
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 4
ELECTRICAL ADJUSTMENTS
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 R-
CH.
Record/Playback Head Azimuth Adjustment
(Deck A, Deck B)
Note: Perform this adjustments for both decks.
Procedure:
1. Mode : Playback
DECK SECTION 0 dB=0.775V
Tape
P-4-A100
WS-48B
Signal
10 kHz, –10 dB
3 kHz, 0 dB
Used for
AzimuthAdjustment
Tape SpeedAdjustment
test tape
P-4-A100
(10kHz, –10dB) SPEAKER
terminal (JK301)
level meter
+
–
set

— 10 —
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.
3. Mode: Playback
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)
test tape
WS-48B
(3kHz, 0dB)
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: DECK board
Sample Value of Wow and flutter
W. RMS (JIS) within 0.3%
(test tape: WS-48B)
[DECK BOARD] — Component side —
L-CH
peak
R-CH
peak
screw
position
output
level within
2dB within 2dB
L-CH
peak
screw
position
R-CH
peak
test tape
P-4-A100
(10kHz, –10dB) SPEAKER
terminal (JK301)
(L-CH)
set
L
R
oscilloscope
SPEAKER
terminal (JK301)
(R-CH)
Waveform of oscilloscope
in phase 45˚ 90˚ 135˚ 180˚
good wrong
SPEAKER
terminal (JK301)
set
frequency counter
+
–
Tape Speed
SFR501
CN501

— 11 —
TUNER SECTION 0 dB=1µV
MW Tuning Voltage Adjustment
Procedure:
1. Set the reception frequency of the unit to 531 kHz.
2. Adjust L105 for 1.2 ± 0.05 Vreading on the DC voltmeter.
3. Set the reception frequency of the unit to 1,602 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)
AMTracking Adjustment
Procedure:
1. Tune the set to 600 kHz.
2. Set the output ofAM 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 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)
TP1
+
DC voltmeter
Main board
–
F
G
VT
AM RF SSG
loop antenna
set
loop antenna
(Supplied accessories)
60 cm AM ANTENNA
terminal (JK101)
30% amplitude
modulation by
400 Hz signal Field strength dB (
µ V/m) =SSG output level dB ( µ V/m) –26 dB.

— 12 —
FM Tuned Level Adjustment
set
Procedure:
1. Supply a 28 dB 98 MHz signal from theANTENNAterminal.
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
Carrier frequency : 98 MHz
Modulation : AUDIO 1 kHz, 75 kHz
deviation (100%)
Output level : 28 dB (at 75
Ω open)
FM ANTENNA terminal
(JK101)
75
Ω coaxial
SFR101
FM Tyned Level
IC103 TP1 IC102
L105 IC101
CT102
AM
Tracking
L104
JK101
JK301
MW Tuning
Voltage

— 13 —
IC03 VR02
VR01
R07
IC01
CN12
Focus Gain
Focus Bias
RF Level
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 focusbias adjustment when optical block is replaced.
Focus Bias Adjustment
RF Level Check
Procedure :
1. Connect oscilloscope to test pointTP (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.
oscilloscope
level: 1.0 Vp-p
VOLT/DIV: 200 mV
TIME/DIV: 500 nS
+0.3
–0.2
Adjustment Location: CD DECODER board
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 voltmeter reading is 0 ± 20 mV.
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.
Therefore, do not perform this adjustment.
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 —
CD DECODER
boardCN12
FEO
VC
DC voltmeter
+
–
CD DECODER
board
TP (RF)
CN12 (VC)

— 14 —
SECTION 5
DIAGRAMS
5-1. CIRCUIT BOARDS LOCATION
SW (C) board
SW (D) board SW (B) board
CD BUTTON board
PANEL board
VOLUME board
FUSE board
AMP board
MAIN board MOTOR board
MOTOR (6P) (S) board
SW (A) board
CD DECODER boar
d
DECK board

HCD-R500/RX55
5-2. BLOCK DIAGRAMS
— DECK SECTION —
— 15 — — 16 —
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
AMS
MUTE
Q551,552
PLAY/REC
CONTROL
D201
L251
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
Q251
D202
: FM
: CD
• Signal Path
• RCH is omitted
B
CD
SECTION
TU L
11
9
10
ST IND
TU MUTE
DO
CD L
12
CONTROL
3 2 1
CLK
14
DI
15
CE
13
SELECTOR
IC301
CLK DI CE
LINE AMP
IC303
1
3
Q709
MUTE
110
4
POWER AMP
IC401
SPEAKER
RELAY
DRIVE
Q706
Q708 1
26
IC402
RL701
R CH
SPEAKER
PHONES
JK302
JK303
SCOR
SENS
SQSO
XLAT
SQCK
DATA
DI
CLK
CE
STB
26
STB
21
CE
22
CLK
23
DO
52
FOK
53
COUNT
18
DATA
19
SQSO
51
SENS
38
SCOR
24
DI1
MUTE
DRIVE
Q410
Q604
MUTE
MUTE
SWITCH
Q603
4
TU MUTE
47
FM ST IND
3
SYSTEM MUTE
2
POWER
LED DRIVE
IC603
36
ALATCH
13
LED
DRIVE
DI
CLK
Q608-613
RESET
SWITCH POWER DOWN DET
Q601
10
RESET
15
POWER DOWN
Q602
LED606-611
LED601-604
Q602
D602
X2
11
X1
12
VR UP
44
X601
4.19MHz
VR DOWN
45
VR601
VOLUME
PIC UP
55
PIC DOWN
56
TRAY OPEN
59
TRAY CLOSE
60
TURN TABLE
58
DISC COUNT
57
AB
S02
TRAY
OPEN/CLOSE
DET
S03
DISC
COUNTER
DET
S04
TURNTABLE
OPERATION
DET
S01
CD DECK
UP/DOWN
DET
3
2
Q601 RM601
REMOTE
CONTROL
RECEIVER
39
REMOTE
64 78
KEY
MATRIX
S601-628
P1 P21 100 86
G1 G15
.81 8533 29
KI0 KI4
FLD601
FLD DISPLAY
SYSTEM CONTROLLER/
FLD DRIVER
IC601
+5.6V
REG
Q409
SITCHING
Q415,416
+11.5V
(SWITCHED)
+11.5V FILTER
Q403
+7.5V
REG
Q702
+7.5V +12V
REG
Q701
RECT
D705-708
P MUTE
CONT
Q713
AC OFF
DET
Q714
D718
D720
RECT
D701
-12V
-30V
+30V
-27V
REG
Q703
-27V VOLTAGE
DOUBLER
D731,732
AC
IN
PT001
AC3.4V
AC3.4V
12
16
A
TUNER
SECTION
: PB (DECK A)
: PB (DECK B)
: REC (DECK A)
Q201
BIAS
SWITCH
CONTROL
SWITCH
Q208,209
Q252,253
+12V
REC
MUTE
Q213
6
TAPE A/B
MIX OUT
MD L
JK301
LINE
OUT L
9 8
6
IC302 (2/2)
11 10
12
IC302 (1/2)
Q417
Q301
62
SERI MUTE
6
TAPE REC
61
AMS
BUS REGISTER
IC501
14
REC 12
BIAS 11
A/B 13
REC MUTE
2
S/I 3
CLK
10
Q'S 1
STB DECK STB 43
MOTOR
B+ SW
Q501,502
SOL B
DRIVE
Q503,504
DO
CLK
SHIFT REGISTER
IC502
2
MTR +12V
9
QH 1
S/L DECK DATA
42 DECK S/L
41
SOLA
DRIVE
Q505,506
PLAY
4
SOLA
5
SOL B
6
+12V
F REC
3R REC
4
PHOTO A
5PHOTO B
6
A MODE
11 B MODE
12
A HALF
13 B HALF
14
HALF B
HALF A
MODE B
MODE A
PHOTO B
PHOTO A
REC REV
REC FWD
SOL B
SOLA
SOL B
MOTOR H
MOTOR L TAPE
SPEED
SFR 501
MECHA BLOCK
12
17
CE
CLK
DO
LED
DRIVE
Q606,607
10
5
LED DRIVE
IC602
2
3
4
11
12
LED605
1
3
2
Q605,615
SW
MODE
13
+5.6V
SW101
10k
9k
JOG A
49
JOG B
50
VR612
MULTI JOG
AB
4
LT COM
SURROUND
CONTROL
Q307
Q310
5
SURROUND
4
32
Q331
HIGH
Q308
NORMAL
7
DBFB NORMAL
8
DBFB HIGH
HPAMP
IC401
Q408
MUTE
SP
DET
Q404
+12V
-12V
REG
Q401
: MD
17
SQCK
20
XLAT
COUNT
FOK

HCD-R500/RX55
—TUNER/CD SECTION —
— 17 — — 18 —
CE
19 12
5
3
4
2
24
1
PLL
IC103
FM
XO
XI CLK
DI
DO
CE
CLK
DO
DI
OPTICAL PICK-UP
BLOCK
APC
Q01 38
+5V
VC
LD
GND
A
C
B
E
F
FOCUS
COIL
F+
F
T+
T
TRACKING
COIL
33
34
39
36
35
48
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
24
23
20
19
22
21
31
25
SENS
RFO
FOK
C OUT
DATA
XLT
CLK
XRST
13
FEO TAO
IC03
T.T/TRAY MOTOR
DRIVER
CD RF/SERVO
PROSSESOR
IC01 (1/2)
4
5
T IN
3
2
1
VR
PD
PD
18
17
20
19
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
911 5 4 7 61
MDP
SENS
SCOR
SQSO
SQCK
CLOCK DATA
CLK
XLT
DAT
SE
CN
FOK
RF
SERIAL
I/F PWM
PWM
61
70
69
73
74
D OUT
NL
L
XTA1
XTA0 X701
MUTE
VDD
R-CH
D IN
GND
2
3
1
+5V
OPTICAL
DIGITAL
OUT
PH01
CD DIGITAL
SIGNAL PROCESSOR
IC703
16
:FM
:CD
:DIGITAL OUT
• SIGNAL PATH
14
7
8
4
2
1
6
10
DETECTOR
16
OSC
FM
75Ω
AM
ANTENNA
JK101
L101
FM ANT
8 RF MIX 1
3
FM FRONT END
FE101
RF IF
AMP
Q101
CF101
10.7MHz CF102 10.7MHz
L105
MW OSC
IF
G
VT
AM/FM
TUNING
VOLTAGE
TP1
L104
AM ANT
AM RF
AMP
Q108
MPX
16
FM IF
1
OSC
23
AFC
22 AM RF
21
FM
IF
AF DET
18
FM
DET
AM/FM
IF BUFF
AM
OSC AM MIX
AM
DET
SMET
20
CF103
450kHz
MUTE
AGC
AM
IF
DECODER 14
L
15
R
4
2
T102
AM IFT
8
FM DET
17
MPX VCO
CF104
10.7MHz
CF105
19kHz
R CH
FM/AM MPX
IC102
L.P.F
Q112,113
FM
TUNED
LEVEL
PD1
21
X101
7.2MHz
FM B+
17
TUB+
B+
Q114
PL DET
13
18
AM
OSC/FMSD
24
B+
7
SD
PH DET
11
PH DET
12
14
ST/MONO
TU LED
6
13
AM/FM
SD
15
L CTR 16
R CTR
7
ST IND
10
AM/FM
MUTE
Q117
TU L
ST IND
TU MUTE
DI
A
MAIN
SECTION
D
5
LD ON
SWITCH
Q02
LD
PD
F/T COIL
SL/SP MOTOR
CN12
CN2
ATSC
45 FEO
1
TEO
42
FOCUS
TRACKING
37 40
FE BIAS EI
RV01
FOCUS
GAIN
RV02
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
IC06
IC01 (2/2)
67
REG
Q11
9
REG I
10
REG B
11
REG OUT
7
VCC 8
VCC
+5V
+7.5V
XRST
6
SPEED
11
CONTRL
5
SWITCH
Q04
13
14
TR+
TR
7
14
T.T+
T.T
4
MUTE
2
DATA 3
CLOK
1
STB
IC02
MOTOR DRIVE
REG CONTROL
T.T/TRAY
36
23
14
13
15
16
17
8
25
18
SPOA
LIMIT
SWITCH
S05
10
XLAT
CLOCK
GEN.
PWM
PWM 77
78
NR
R
22
XLON
1
3
2IC05
MIX AMP
MUTE
Q311
CD L
SCOR
SENS
SQSO
XLAT
SQCK
DATA
CE
STB
CLK
DO
B
MAIN
SECTION
:AM
• R CH is omitted
SFR101
COUNT
FOK
CLK
DO

— 19 —
IC02 (CD DECORD BOARD)TC9173P
5-3. IC BLOCK DIAGRAMS
IC03 (CD DECORD BOARD) BA5941FP
+–
LEVEL SHIFT
+– +–
1 2 345678910 11 12 13 14
28 27
LEVEL SHIFT
+–
+
–
MUTE
+
–
+–
LEVEL SHIFT
+– +–
LEVEL SHIFT
+–
+
–
+
–
15
1617
18
19
21 20
22
26 25 24 23
+–
NC
Vcc
VccVcc
VCC
BIAS IN
IN1B IN1A IN2B IN2A
GND GND
MUTE
VCC
OUT2A OUT2B OUT1A OUT1B
IN4B IN4A IN3B IN3A OP OUT OP IN (–) OP IN (+) GND NC VCC OUT3A OUT3B OUT4A OUT4B
DRIVER
DRIVER
GND
MUTE
CONTROL
XRST
T.T(M)
POSI.1
POSI.2
T.T.SW
VDD
STB
CLOK
DATA I
DATA 0
LOADING
M-
LOADING
M+
SENSOR
1
8
2
3
4
5
6
7
16
9
15
T
C14
13
12
11
10
SERIAL I/O
CONTROL
LATCH
LATCHLATCH

— 20 —
IC01 (CD DECORD BOARD) CXA1782BQ
36
PHD2 PHD1 PHD
33
LD
32
RF M
31
RF O
30
RF I
29
CP
28
CB
27
CC1
26
CC2
25
FOK
24 SENS
23 C. OUT
22 XRST
21 DATA
20 XLT
19 CLK
18 VCC
17 ISET
16 SL 0
15 SL M
14 SL P
13
12
TA O
TA M
11
FSET
10
TG2
9
TGU
8
SRCH
7
FE M
6
FE O
5
FLB
4
FGD
3
FDFCT
2
FEI
1
FEO
48VC
47TDFCT
46TZC
45ATSC
44TEI
43LPFI
42TEO
41VEE
40EI
39E
38F
37FE BIAS
+
+
–
+
+
–
+
–
+
–
+
–
+
–
+
–
+
+
+
–
+
–
+
–
+
–
+
–
+
–
+
–
+
–
–
+
+
–
–
+
+
–
+
–
+
–
+
–
+
–
APC
–
–
–
–
LEVELS
FOK
MIRR
DFCT
RF IV AMP2
RF IV AMP1
FE AMP
F IV AMP
E IV AMP
TE AMP
FZC COMP
BAL1 BAL2 BAL3
TOG1 TOG2 TOG3
TTL
IIL
IIL
TTL
TTL
IIL
• IIL DATA RESISTOR • INPUT SHIFT RESISTOR
• ADDRESS DECODER
• OUTPUT DECODER
HPF COMP LPF COMP
TZC COMP
DFCT
DFCT
TM1
FS4
ATSC
• WINDOW COMP
• FCS PHASE
COMPENSATION
• TRACKING
• PHASE
COMPENSATION
• ISET
FS1
FS2
TM4
TM5
TM6
TM3
TM7
TG2
• F SET
TG1
TM2
+
–
TOG1-3 FS1-4 TG1-2 TM1-7 PS1-4
BAL1-3
35 34

— 21 —
IC301 (MAIN BOARD) LC75392
IC201 (MAIN BOARD)TA8189N
+
–
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

— 22 —
IC101 (MAIN BOARD) LA1186
IC602 (PANEL BOARD) BU2092
RF IN 1
2
3
4
5
6
7
8
9
BYPAS
GND
GND
MIX IN
IF
OSC
VCC
AFC
RF VREF
MIX
REG
OSC BUF
12 3 456789
1016 15 14 13 12 11
CONTROL
CIRCUIT
12 BIT
SHIFT
REGISTER
12 BIT
STORAGE
REGISTER
OUTPUT
BUFFER
(OPEN DRAIN)
1718
VDD OE Q11 Q10 Q9 Q8 Q7 Q6 Q5
Q4 Q3 Q2 Q1 Q0
LCK
CLOCK
DATA
VSS
3
6
9
12
15
18
2
5
8
11
14
17
1
4
710
13
16
SHIFT
REGISTER
LATCH
ENABLE
SIN
CK
LATCH
SOUT
EN
RST
GND
GND
VDD
O1
O2
O3
O4
O5
O6
O7
O8
GND
IC603 (PANEL BOARD) BU2114