Sony CFDS-20-CP Service manual

CFD-S20CP

SERVICE MANUAL

Ver 1.4 2004. 09

Section

Section

US Model

Canadian Model

Taiwan Model

Korean Model

Model Name Using Similar Mechanism CFD-S400/S500

CD

CD Mechanism Type KSM-213RDP
Optical Pick-up Name KSS-213R
Model Name Using Similar Mechanism CFD-S400/S500

TC

Tape Transport Mechanism T ype MF-S200

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL
HARMONIC DISTORTION
With 3.2-ohm loads, both channels driven from
150 - 6,300 Hz; rated 1.8 W per channel­minimum RMS power, with no more than 10%
total harmonic distortion in AC operation.

Other Specifications
CD player section

System

Compact disc digital audio system

Laser diode properties

Material: GaAlAs
Wave length: 780 nm
Emission duration: Continuous
Laser output: Less than 44.6 µW
(This output is the value measured at a distance of
about 200 mm from the objective lens surface on
the optical pick-up block with 7 mm aperture.)

Spindle speed

200 r/min (rpm) to 500 r/min (rpm) (CLV)

Number of channels

2

Frequency response

20 - 20,000 Hz +1/–2 dB

Wow and flutter

Below measurable limit

SPECIFICATIONS

Radio section

Frequency range

FM: 87.5 - 108 MHz
AM: 530 - 1,710 kHz (US, CND)
AM: 531 - 1,611 kHz (KR, TW)

Antennas

FM: Telescopic antenna
AM: Built-in ferrite bar antenna

Cassette-corder section

Recording system

4-track 2 channel stereo

Fast winding time

Approx. 120 sec. with Sony cassette C-60

Frequency response

TYPE I (normal): 80 - 10,000 Hz

– Continued on next page –

9-873-978-05

2004I04-1
© 2004. 09

CD RADIO CASSETTE-CORDER

Sony Corporation

Personal Audio Company
Published by Sony Engineering Corporation

1

CFD-S20CP

Ver 1.3

General

Speaker

Full range: 10 cm (4 in.) dia.,

3.2 ohms, cone type (2)

Outputs

Headphones jack (stereo minijack)
For 16 - 68 ohms impedance headphones

Power output

2.3 W + 2.3 W (at 3.2 ohms, 10%
harmonic distortion)

Power requirements

For CD radio cassette-corder:
US, CND, TW model:
120 V AC, 60 Hz
KR model:
220 V AC, 60 Hz
9 V DC, 6 size D (R20) batteries
For remote control:
3 V DC, 2 size AA (R6) batteries

Battery life

For CD radio cassette-corder:

FM recording

Sony R20P: approx. 13.5 h
Sony alkaline LR20: approx. 20 h

Tape playback

Sony R20P: approx. 7.5 h
Sony alkaline LR20: approx. 15 h

CD playback

Sony R20P: approx. 2.5 h
Sony alkaline LR20: approx. 7 h

Dimensions

Approx. 386 × 166 × 252 mm (w/h/d)

1/4 × 6 5/8 × 10 inches) (incl. projecting parts)

(15

Mass

Approx. 3.3 kg (7 lb. 4 oz.) (incl. batteries)

Supplied accessories

AC power cord (1)
Remote control (RMT-CS20CPA) (1)

Design and specifications are subject to change without
notice.

•Abbreviation
CND : Canadian model
KR : Korean model
TW : Taiw an model

CAUTION

Use of controls or adjustments or performance of proce­dures other than those specified herein may result in haz­ardous radiation exposure.

Flexible Circuit Board Repairing

• Keep the temperature of the 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.

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.

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown 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.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 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 IDENTIFIÉS P AR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMA TIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

2

TABLE OF CONTENTS

1. SERVICING NOTES......................................................... 4

2. GENERAL............................................................................ 5

3. DISASSEMBLY

3-1. Cabinet Top Assy ................................................................ 7

3-2. Cabinet Front Assy, Cabinet Rear Assy ..............................7

3-3. Wires ................................................................................... 8

3-4. MD Block............................................................................8

3-5. Cassette Door Assy ............................................................. 9

3-6. LCD Board, Control (4) Board ...........................................9

3-7. Main Board ....................................................................... 10

3-8. Tuner Board....................................................................... 10

3-9. Power Board......................................................................11

3-10. CD Lid............................................................................... 11

3-11. CD Block Assy.................................................................. 12

3-12. Optical Pick-up ................................................................. 12

3-13. R/P Head (HRP301), TC Board ........................................ 13

3-14. Motor Assy (M801), Main Belt (B), Sub Belt (B) ............ 13

CFD-S20CP

4. MECHANICAL ADJUSTMENTS............................... 14

5. ELECTRICAL ADJUSTMENTS

Tape Section .......................................................................... 14

Tuner Section......................................................................... 15

CD Section ............................................................................ 16

6. DIAGRAMS

6-1. IC Pin Descriptions ........................................................... 17

6-2. Circuit Boards Location .................................................... 19

6-3. Block Diagram – CD Section –......................................... 20

6-4. Block Diagram – Main Section –......................................21

6-5. Printed Wiring Board – CD Section – ...............................22

6-6. Schematic Diagram – CD Section –.................................. 24

6-7. Printed Wiring Board – Tuner Section – ...........................25

6-8. Schematic Diagram – Tuner Section –.............................. 26

6-9. Printed Wiring Boards – Main Section – .......................... 27

6-10. Schematic Diagram – Main Section (1/2) – ...................... 28

6-11. Schematic Diagram – Main Section (2/2) – ...................... 29

6-12. Printed Wiring Board – TC Section – ...............................30

6-13. Schematic Diagram – TC Section – .................................. 31

6-14. Printed Wiring Boards – Control Section –....................... 32

6-15. Schematic Diagram – Control Section – ........................... 33

6-16. Printed Wiring Boards – Display Section – ...................... 34

6-17. Schematic Diagram – Display Section –........................... 35

6-18. Printed Wiring Boards – Power Supply Section – ............36

6-19. Schematic Diagram – Power Supply Section –................. 37

6-20. IC Block Diagrams............................................................ 38

7. EXPLODED VIEWS

7-1. Main Section ..................................................................... 40

7-2. Cabinet Front Section........................................................ 41

7-3. Cabinet Top Section .......................................................... 42

7-4. Cabinet Rear Section.........................................................43

7-5. Tape Mechanism Section .................................................. 44

7-6. CD Mechanism Section .................................................... 45

8. ELECTRICAL PARTS LIST.........................................46

3

CFD-S20CP

SECTION 1

SERVICING NOTES

CHUCK PLATE JIG ON REPAIRING

On repairing CD section, playing a disc without the lid (CD), use
Chuck Plate Jig.

• Code number of Chuck Plate Jig: X-4918-255-1

LASER DIODE AND FOCUS SEARCH OPERATION
CHECK

1. Turn ON the [POWER] button and press [CD] button to
CD position.

2. Open the CD lid.

3. Turn on S801 with screwdriver, etc. as following figure.

4. Press the N X (CD) button.

5. Confirm the laser diode emission while observing the objecting
lens. When there is no emission, Auto P ower Control circuit or
Optical Pick-up is broken.
Objective lens moves up and do wn three times for focus search.

S801

4

SECTION 2

Location of controls

Loading a CD

With the labeled side up

Inserting a cassette

With the side you want
to play facing you

Total track number Programmed track Playing orderTotal playing time

Display

CD

MEGA BASS

Z PUSH
OPEN/CLOSE

VOL +*, –

., >
TUNE –, +

DISPLAY
ENT
MEMORY

MODE

REPEAT

i

Number buttons

x

u*

POWER

SLEEP

OPR/BATT

RADIO BAND
AUTO PRESET

TAPE

Display

Remote sensor

MP3 FOLDER –FOLDER +

SOUND

*The button has a tactile dot.

*

GENERAL

CFD-S20CP

5

CFD-S20CP

SECTION 3

DISASSEMBLY

• The equipment can be removed using the following procedure.

SET

3-1. CABINET T OP ASSY

(Page 7)

3-2. CABINET FRONT ASSY,

CABINET REAR ASSY
(Page 7)

3-3. WIRES

(Page 8)

3-4. MD BLOCK

(Page 8)

3-5. CASSETTE DOOR ASSY

(Page 9)

3-6. LCD BOARD,

CONTROL (4) BOARD
(Page 9)

3-7. MAIN BOARD

(Page 10)

3-10. CD LID

(Page 11)

3-8. TUNER BOARD

3-13. R/P HEAD (HRP301),

TC BOARD
(Page 13)

3-11. CD BLOCK ASSY

3-12. OPTICAL PICK-UP

(Page 10)

(Page 12)

(Page 12)

3-9. POWER BOARD

(Page 11)

3-14. MOTOR ASSY (M801),

MAIN BELT (B),
SUB BELT (B)
(Page 13)

6

Note : Follow the disassembly procedure in the numerical order given.

3-1. CABINET TOP ASSY

2

1

BTP 2.6x6

6

3

screw (2.6)

CNJ806

handle

screw (2.6)

CD lid

4

screw (2.6)

8

cabinet top assy

5

CNJ804

CFD-S20CP

claw

cassette door assy

3-2. CABINET FRONT ASSY, CABINET REAR ASSY

1

PWH 2.6x10

2

HEADPHONE board

7

3

CNP323

screw (2.6)

7

connector

(S801)

9

battery lid

4

CNP801

5

CNJ807

6

CNJ805

qa

cabinet front assy

8

0

qs

cabinet rear assy

screw (2.6)

screw (2.6)

7

CFD-S20CP

3-3. WIRES

Put flat cable and wires between the cabinets and push them in the
grooves located at A to E in the figure to prevent disconnection
before assembling the set.

C

from HEADPHONE board

cabinet front

3-4. MD BLOCK

A

D

B

cabinet rear

E

1

BVTP 2.6x10

3

MD block

2

BVTP 2.6x10

8

3-5. CASSETTE DOOR ASSY

0

cassette spring

2

damper

1

BVTP 2.6x1

CFD-S20CP

3

cassette door assy

3-6. LCD BOARD, CONTROL (4) BOARD

6

LCD board

5

claws

flexible flat cable

4

BVTP 2.6x10

2

1

BVTP (2.6)

claw

CONTROL (4) board

7

claw

cassette door sub assy

3

cassette holder

9

CFD-S20CP

8

3-7. MAIN BOARD

1

PWH 2.6x10

2

HEADPHONE board

3

CNP322

4

CNP902

7

MAIN board

6

BVTP 2.6x10

3-8. TUNER BOARD

5

CNP1

2

telescopic antenna

1

B 3x

10

4

BVTP 2.6x10

5

claws

6

3

CNP1

7

TUNER board

3-9. POWER BO ARD

3

BVTP 2.6x10

4

BVTP 2.6x10

CFD-S20CP

3-10. CD LID

2

CNP901

1

CNP902

3

5

BVTP 2.6x10

CD lid

6

POWER board

2

claw

1

CD spring

claw

11

CFD-S20CP

y

)

3-11. CD BLOCK ASSY

3

CD cover

2

3-12. OPTICAL PICK-UP

PWH 2.6x10

5

sled shaft

4

6

optical pick-up

claws

claw

1

4

CD block ass

1

PWH 2.6x10

gear (A)

2

PWB tapping (M2

12

3

PWB tapping (M2)

3-13. R/P HEAD (HRP301), TC BOARD

)

claws

4

Removal the solders.

2

BVTP 2x4

lug

3

TC board

CFD-S20CP

1

R/P head (HRP301)

3-14. MOTOR ASSY (M801), MAIN BELT (B), SUB BELT (B)

3

main belt (B)

4

sub belt (B)

2

bind DT M2x6

6

motor assy (M801

5

pan M2.6x4.5

1

bind DT M2x6

13

CFD-S20CP

SECTION 4

MECHANICAL ADJUSTMENTS

SECTION 5

ELECTRICAL ADJUSTMENTS

PRECAUTION

1. Clean the following parts with a denatured-alcohol-moistened
swab :

record/playback head pinch roller
erase head rubber belts
capstan idlers

2. Demagnetize the record/playback head with a head demagne­tizer. (Do not bring the head magnetizer close to the erase head.)

3. Do not use a magnetized screwdriver for the adjustments.

4. The adjustments should be performed with the rated power
supply voltage (9V) unless otherwise noted.

Torque Measurement

Mode Torque meter Meter reading

2.95 – 6.86 mN • m

FWD CQ-102C (30 – 70 g • cm)

(0.42 – 0.97 oz • inch)

FWD
Back Tension

FF CQ-201B (more than 60 g • cm)

REW CQ-201B (more than 60 g • cm)

CQ-102C (1.5 – 5.5 g • cm)

0.15 – 0.53 mN • m

(0.021 – 0.076 oz • inch)

more than 5.88 mN • m

(more than 0.83 oz • inch)

more than 5.88 mN • m

(more than 0.83 oz • inch)

TAPE SECTION 0 dB = 0.775 V

• Standard Output Level
Output terminal HP OUT

load impedance 32 Ω

output signal level 0.25 V (–10 dB)

• Test T ape

Type Signal Used for

WS-48A 3 kHz, 0 dB tape speed adjustment

Tape Speed Adjustment

Procedure:

Mode: playback

test tape
WS-48A
(3 kHz, 0 dB)

set

i

jack (J321)

Adjust so that the value on the digital frequency counter is
3,000 Hz.

digital frequency
counter

32

Ω

Tape Tension Measurement

Mode Tension meter Meter Reading

FWD CQ-403A

more than 100 g

(more than 3.53 oz)

Specification Value:

Digital frequency counter

2,940 to 3,060 Hz

Adjust so that the frequency at the beginning and that at the end of
tape winding are between 2,970 to 3,030 Hz.

Adjustment Location:

14

Tape speed adjustment
control inside motor

CFD-S20CP

)

Ver 1.2

TUNER SECTION 0 dB = 1 µV

• FM Section

Setting:

RADIO BAND•AUTO PRESET button: FM

FM RF signal
generator

TP (FM IN)

0.01

µ

F

75 kHz frequency
deviation by 1 kHz signal
output level : as low as possible

• AM Section

Setting:

RADIO BAND•AUTO PRESET button: AM

AM RF signal
generator

30% amplitude
modulation by
400 Hz signal

• Connecting Level Meter (FM and AM)

set

Put the lead-wire
antenna close to
the set.

level meter
(range: 0.5–5 V ac

32 Ω

set

FM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

T2

10.7 MHz

FM FREQUENCY COVERAGE

ADJUSTMENT

Frequency Display 87.5 MHz 108 MHz
Reading on Digital voltmeter 1.3 ± 0.3 V 3.0 ± 0.2 V
Adjustment Part <confirmation> L2

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L1 CT1

87.5 MHz 108 MHz

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter.

T1

450 kHz

AM FREQUENCY COVERAGE

ADJUSTMENT

Frequency Display 531 kHz 1,611 kHz
Reading on Digital voltmeter 1.0 ± 0.05 V 5.3 ± 0.7 V
Adjustment Part L4 <confirmation>

AM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L3 CT3

621 kHz 1,404 kHz

i jack (J321)

• Connecting Digital Voltmeter (FM and AM)

digital
voltmeter

100 kΩ

TP (VT)

•Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.

Adjustment Location: See page 16.

15

CFD-S20CP

7

0

0

Adjustment Location:

– MAIN board (component side) –

TP (FM IN)

(CONDUCTOR SIDE)

T1

AM

IF

ADJUSTMENT

ADJUSTMENT

T2

FM

IF

T1

T2

L1

L3

CT1

IC1

CT1, L1

FM

TRACKING

ADJUSTMENT

L2

L2

FM

FREQUENCY

COVERAGE

ADJUSTMENT

CT3, L3

AM

TRACKING

ADJUSTMENT

CT3

L4

TP (VT)

(CONDUCTOR SIDE)

L4

AM

FREQUENCY

COVERAGE

ADJUSTMENT

IC2

CD SECTION

CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.

FOCUS BIAS CHECK

1. Connect the oscilloscope between IC701 pin 4 and pin qa (or
TP (RF) and TP (VREF)).

2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)

3. Press the N X (CD) button.

4. Confirm that the oscilloscope waveform is as shown in the
figure below. (eye pattern)
A good eye pattern means that the diamond shape ( ) in the
center of the waveform can be clearly distinguished.

• RF signal reference waveform (eye pattern)

VOLT/DIV : 50 mV (10 : 1 probe in use)
TIME/DIV : 500 nS

RF level :

0.85 ± 0.2 Vp-p

When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.

TP

C719

C706

C717

(VREF)

C701

C721

R709

C711

C712

C740

TP

C722

R707

C714

C707

R759

C713

C709

R710

TP(RF)

R729

IC701

Test Point:

– CD board (conductor side) –

TP

(RF)

TP

(VREF)

TP

(TE)

C715

(FE)

C716

C718

TP

(TE)

C720

TX

TY

FX

FY

SPX

SPY

SLX

SLY

R740

C756

R708

R711

R730

Q701

C732

C705

C710

R727

C746

C733

C737

C708

R728

R765

R726

R764

R724

C742

FB704

R725

R763

C744

C743

C762

R732

FB703

C767

R733

R737

CNP701

C763

C761

R735

C766

C760

R734

R723

C764

R745

R757

R755

C1068

R736

R706

R1001

FB1001

C1066

C1074

R704

R1002

R1003

C1069

C1067

C1

R1

FB1002

R702

C

R1004

16

CFD-S20CP

SECTION 6

DIAGRAMS

6-1. IC PIN DESCRIPTIONS

• IC1001 LC78683E-US-E (MP3 DECODER, CD-ROM DECODER, ANTI-SHOCK CONTROLLER) (CD BOARD)

Pin No. Pin Name I/O Pin Description

1 LRSY I CD L/R clock input
2 ADDATA O Audio data output
3 ADBCK O Audio bit clock output
4 ADLRCK O Audio L/R clock output
5 C2FIN I CD C2 error flag input
6 VSS — Ground
7 CKIN I System clock (16.9344 MHz) input
8 VSS — Ground

9CKOUT O Clock (384Fs) output for external DF/DAC.
10 VSS — Ground
11 DVDD1 — Digital power supply pin for I/O.
12 PW I CD subcode data serial input
13 SBSY I CD subcode block synchronized signal input
14 SFSY I CD subcode frame synchronized signal input
15 SBCK O Serial clock output for CD subcode transfer. (Not used. (Open))
16 AVDD — Analog (PLL) power supply pin
17 VPRFR — VCO oscillation range setting pin
18 VCOC I VCO control voltage input
19 VPDO O VCO charge pump output
20 AVSS — Analog ground
21 DVDD2 — Power supply pin for internal logic.
22 VSS — Ground

23 to 30 MDATA0 to 7 I/O DRAM data bus 0 to 7

31 DVDD3 — Digital power supply pin for I/O.
32 VSS — Ground

33 to 40 MDATA8 to 15 I/O DRAM data bus 8 to 15

41 RASB O Row Address Strobe signal output (L: active)
42 WEB O Data Write Enable signal output (L: active)
43 CASLB O Column Address Strobe signal output (for lower byte, L: active)
44 CASUB O Column Address Strobe signal output (for upper byte, L: active)
45 OEB O Output enable signal output (L: active)

46 to 49 MADRS12 to 9 O DRAM address output 12 to 9 (Not used. (Open))

50 MADRS8 O DRAM address output 8
51 DVDD4 — Digital power supply pin for I/O.
52 VSS — Ground

53 to 60 MADRS7 to 0 O DRAM address output 7 to 0

61 DVDD5 — Power supply pin for internal logic.
62 VSS — Ground

63 STREQ I/O
64 STCK I/O MP3 data transfer clock input/DRAM data transfer clock output (Not used. (Open))

65 STDAT I/O MP3 data serial input/DRAM data serial output (Not used. (Open))
66 FSYNC O MP3 frame synchronized signal input (H: active) (Not used. (Open))

67 CRCF O
68 DVDD6 — Power supply pin for internal logic.

69 VSS — Ground

70 WOK I

MP3 data request flag output (H: active)/DRAM data request flag input (H: active)
(Not used. (Open))

CDROM-CRC flag output (H: active)/DRAM data output enable signal output
(H: active) (Not used. (Open))

DRAM write OK input (at CD-DA, H: active)/DRAM data request flag input
(at CD-ROM, H: active)

17

CFD-S20CP

Pin No. Pin Name I/O Pin Description

71 CNTOK O

72 OVF O
73 CMDOUT O Command serial data output (Nch open drain output pin)

74 CMDIN I Command serial data input
75 CL I Command serial clock input
76 CE I Command enable input (H: active)
77 INTB O Interrupt signal output (L: active)
78 RESB I System reset input (L: active)
79 DATAIN I CD serial data input
80 DATACK I CD bit clock input

Data connecting point detection completion flag output (at CD-DA, H: active)/DRAM
data serial output (at CD-ROM, H: active) (Not used. (Open))
DRAM write discontinue flag output (at CD-DA, H: active)/DRAM data transfer
clock output (at CD-ROM, H: active) (Not used. (Open))

18

• IC801 µPD784216AGF-527-3BA (SYSTEM CONTROLLER) (MAIN BOARD)

d

Pin No. Pin Name I/O Pin Description

1 TU-CE O PLL chip enable output

2 TU-DATA O PLL serial data output

3 TU-CLK O PLL serial data transfer clock output

4 TU-COUNT I PLL serial count data input

5 TU-MUTE O Tuner muting ON/OFF control signal output (L: muting ON)

6 DEST1 I Destination setting input (Fixed at L: US, Canadian model, H: Singapore, Korean model)

7 DEST2 I Destination setting input (Fixed at L: US, Canadian model, H: Singapore, Korean model)

8 TEST-B O Fixed at L in this set.

9 VDD — Power supply pin (+3.3 V)
10 TEST-A I Fixed at L in this set.
11 EEPROM-SCL O Serial clock output for EEPROM IC (IC802).
12 EEPROM-SDA I/O Serial data bus input from/output for EEPROM IC (IC802).

13 to 16 N.C — Not used. (Open)

17, 18 ISS1, 2 O ISS1, 2 output

19 TU-ON O Tuner power ON/OFF control signal output (L: power ON)
20 TAPE-ON O Tape power ON/OFF control signal output (L: power ON)
21 CD-ON O CD power ON/OFF control signal output (L: power ON)
22 TEST/VPP I Fixed at L.

23 to 27 N.C — Not used. (Open)

28 MP3-LED O MP3 LED drive signal output (L: active)
29 LCD-RST O LCD system reset signal output (L: reset)
30 LCD-C/D O LCD command data output
31 LCD-CS O LCD chip select data output
32 LCD-DATA O LCD serial data output
33 LCD-CLK O LCD clock output
34 N.C — Not used. (Open)
35 FM/AM SHIFT O Shift point output for oscillation frequency change.
36 N.C — Not used. (Open)
37 VDD — Power supply pin (+3.3 V)
38 X2 O System clock output (5 MHz)
39 X1 I System clock input (5 MHz)
40 VSS — Ground
41 XT2 O Sub clock output (Not used. (Open))
42 XT1 I Sub clock input (Not used. (Connect to VSS))
43 RESET I System reset signal input (L: reset)
44 AC-CHK I AC power supply detection signal input (L: AC in)
45 RMC IN I Sircs receiver data input
46 WAKE-UP I Wake-up input
47 N.C — Not used. (Open)
48 CD-DOOR I CD lid open/close detection switch input (L: close)
49 INTB (MP3) I Interrupt request signal input (L: active)
50 WRQ (CD) I CD interruption signal input
51 AVDD — Power supply pin (+3.3 V)
52 AVREF0 — Connect to VDD.

53 to 57 KEY1 to 5 I Key input 1 to 5

58 REG-CHK I REG-CHK detection signal input
59 VH I High voltage (+9 V) detection signal input for battery check.
60 VM I Middle voltage (+4.5 V) detection signal input for battery check.
61 AVSS — Analog ground

62, 63 N.C — Not used. (Open)

64 AVREF1 — Connect to VDD.

65 to 67 N.C — Not used. (Open)

Pin No. Pin Name I/O Pin Description

68 CMDOUT (MP3) O Command serial data output
69 CMDIN (MP3) I Command serial data input
70 CL (MP3) O Command serial clock output
71 N.C — Not used. (Open)
72 DRF (CD) I CD focus ON/OFF detection signal input
73 DO (CD) O CD data output
74 DI (CD) I CD data input
75 CL (CD) O CD data transfer clock output
76 CE (CD) O CD chip enable output
77 FSEQ (CD) I CD synchronized signal detection input
78 RES (CD) O CD system reset signal output (L: reset)
79 RESB (MP3) O MP3 system reset signal output (L: reset)
80 CE (MP3) O MP3 chip enable output

81 to 90 N.C — Not used. (Open)

91 A-MUTE O Audio muting ON/OFF control signal output
92 MEGA BASS O MEGA BASS ON/OFF control signal output
93 P-CON O System power control output (H: active)
94 V-DATA O Volume data output
95 V-CLOCK O Volume clock output
96 N.C — Not used. (Open)
97 TAPE PLAY I Tape playback switch input (L: playback)
98 REC-IN I Tape record signal input (H: record)
99 N.C — Not used. (Open)

100 VSS — Ground

6-2. CIRCUIT BOARDS LOCATION

CONTROL (2) board

CD board

HEADPHONE board

POWER board

LCD board

BATTERY (2) board

CONTROL (1) board

CONTROL (4) board

TC board

BATTERY (1) board

CFD-S20CP

MAIN board

CONTROL (3) boar

TUNER board

19 19

CFD-S20CP

Ver 1.3

6-3. BLOCK DIAGRAM — CD SECTION —

A

C

B

D

E

F

LD

PD

VREF

OPTICAL PICK-UP

BLOCK

(KSS-213R)

TRACKING

COIL

FOCUS

COIL

M702
SLED

MOTOR

M701

SPINDLE

MOTOR

S701

(LIMIT)

M

M

Signal path
: CD

Abbreviation
CND : Canadian model
KR : Korean model
TW : Taiwan model

A

C

B

D

E

F

LD

PD

VR

VREF

T+
T–

F+
F–

SL+
SL–

SP+
SP–

CONTROLLER

S801

PUSH

OPEN/
CLOSE

LD POWER

Q701

VREF

COM. 3.3V

D.VDD (3.3V)

2

(Page 21)

FIN2

FIN1

7

TIN1

9

TIN2

10

LDD

80

LDS

79

VREF

11

T+

17

T–

18

F+

12

F–

11

SL+

26

SL–

27

SP+

2

SP–

1

SLED/SPINDLE

MOTOR DRIVER,

TRACKING/FOCUS

CD-CONT

APC

TRACKING

COIL

DRIVE

FOCUS

COIL

DRIVE

SLED

MOTOR

DRIVE

SPINDLE

MOTOR

DRIVE

COIL DRIVER

IC702

CD +3.3V

SWITCH

Q806,808

48

PH/BH

MUTE

CD DOOR

RF

TIN

20

FIN

10

SLIN

25

SPIN

VREF

23

OPIN

15

+3.3V

REG

Q957,D957

LCHO

RCHO

DATA

DATACK

LRSY

ASDFIN

ASDACK
ASLRCK

16MOUT

CE

CL

80CE70

CL(MP3)

CF2

RESB

INTB

79

49

INTB(MP3)

AC-CHK

42

45

59
58

57
56
55

52
50

RESB

44

AC-HI

CONT4

AUDIO+6V

REG

Q955,D953

POWER

SWITCH

Q952,953

INTERPOLATION

MUTE

&
ATTENUATION
DEEMPHASIS

PLL

VCEC

COMMAND
INTERFACE

RES

DICECL

DI(CD)

RES(CD)

CE(CD)

BATT COM

VDD

SLICE
LEVEL

CONTROL

A/D

CONVERTER,

SERVO

PROCESSOR

RF AMP,

SYSTEM SERVO PROCESSOR,

DIGITAL SIGNAL PROCESSOR

SYSTEM CONTROLLER

VH

59

CONTROLLER

Q807,D802

RADIO 6V
AUDIO 6V

P.VDD (6.2V)

VDD (SW)

IC701

IC801 (1/2)

POWER

CLV,CAV

CONTROL

SWITCH

93

P-CON58REG-CHK

D951

D/A

FDD

SPDO

21 22 23

FD

SP

ICP301

EFMIN

3

AGC

HFL
PH(RFENV)

FE
TE

VREF

SLDO

SL

VM

60

BATTERY

CHECK

Q804,805

48

CONVERTER

TDDTD

20

TD

FD

7

SL

SP

3

VREF

ERROR

CORRECTION

AUDIO CD

FRAME SYNC

DETECT,PROTECT

INSERT

EFM DECODER

GENERAL
PURPOSE

PORT

CONT1

FSEQ

DRF

67

31 72 25 66 63 61 62 49 48

72 77 74 76 75 50 7378

DRF(CD)

FSEQ(CD)

WRQ

65 64

CL(CD)

WRQ(CD)

3.3V

DIGITAL

FILTER

1-bit DAC

SERIAL

EXTERNAL

AUDIO IN

DO

DO(CD)

8FS

&

OUT

CLOCK

GENERATOR

XIN

16.93MHz

X701

+3.3V

IC803

REG

LPF

FSX/16MIN

XOUT

CMDIN

CMDOUT

69

68

CMDIN(MP3)

CMDOUT(MP3)

23

CMDOUT
CMDIN
CL
CE
INTB
RESB

Q803

U-COM

(VDD)

CD_IN_ L

CD_IN_R

1

7960

DATA IN
DATACK

80

1

LRSY

2

ADDATA

3

ADBCK

4

ADLRCK

5

CF2IN
CKOUT

9

CKIN

754

CMDOUT

73
74

CMDIN

75

CL

76

CE
INTB

77
78

RESB

CND,KR,TW MODEL

D901 – 904

RECT

(Page 21)

MDATA0

MDATA15

23-30,33-40 60-53,50

2-5,7-10,

35-38,40-43

DQ0-DQ15

F902

JW902

US MODEL

I

POWER

TRANSFORMER

4.5V

4.5V

MPS DECODER,

CD-ROM DECODER,

ANTI-SHOK

CONTROLLER

IC1001

MADRS0

I

MADRS8

18-21,24-28

A0-A8

SDRAM

IC1002

T901

DRY BATTERY

SIZE " D "

(IEC DESIGNATION R20)

6PCS,9V

OEB

CASLB

CASUB

RASB

41 44 43 45 42

16 30 31 29 15

OE

RAS

LCAS

UCAS

J901

AC IN

WEB

WE

POWER

SWITCH

Q951

2020