Sony CFD-S20CP - Cd Radio Cassette-corder User manual

1
SERVICE MANUAL
CFD-S20CP
CD RADIO CASSETTE-CORDER
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
Radio section
Frequency range
FM: 87.5 - 108 MHz
MW:531 - 1,611 kHz (9 kHz step)
530 - 1,610 kHz (10 kHz step)
LW: 153 - 279 kHz
IF FM: 10.7 MHz
MW/LW: 450 kHz
Aerials
FM: Telescopic aerial
MW/LW: Built-in ferrite bar aerial
SPECIFICATIONS
– Continued on next page –
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
General
Speaker
Full range: 10 cm dia.,
3.2 ohms, cone type (2)
Outputs
Headphones jack (stereo minijack)
For 16 - 68 ohms impedance headphones
Maximum power output
4.6 W
Power requirements
For CD radio cassette-corder:
230 V AC, 50 Hz (Except Saudi Arabia model)
220 - 240 VAC, 50/60 Hz (Saudi Arabia model)
9 V DC, 6 size D (R20) batteries
For remote control:
3 V DC, 2 size AA (R6) batteries
Ver 1.3 2004. 09
9-873-979-04
2004I04-1
© 2004. 09
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
AEP Model
UK Model
E Model
CD Model Name Using Similar Mechanism CFD-S400L
Section CD Mechanism Type KSM-213RDP
Optical Pick-up Name KSS-213R
TC Model Name Using Similar Mechanism CFD-S400L
Section Tape Transport Mechanism Type MF-S200

2
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)
(incl. projecting parts)
MassApprox. 3.3 kg (incl. batteries)
Supplied accessories
Main lead (1)
Remote control (1)
Design and specifications are subject to change without
notice.
CFD-S20CP
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
WITH MARK 0ON 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.
CAUTION
Use of controls or adjustments or performance of proce-
dures other than those specified herein may result in haz-
ardous 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 pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
This Compact Disc player is
classified as a CLASS 1
LASER product.
The CLASS 1 LASER
PRODUCT mark is located
at the bottom.

3
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
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. EXPLODEDVIEWS
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
CFD-S20CP

4
CFD-S20CP
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
SECTION 1
SERVICING NOTES
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
1. Turn ON the [OPERATE] 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 Power Control circuit or
Optical Pick-up is broken.
Objective lens moves up and down three times for focus search.
S801

5
CFD-S20CP
SECTION 2
GENERAL
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
ZPUSH
OPEN/CLOSE
VOL +*, –
., >
TUNE –, +
DISPLAY
ENT
MEMORY
MODE REPEAT
i
Number buttons
x
u*
SLEEP
OPR/BATT
RADIO BAND
AUTO PRESET
TAPE
Display
Remote sensor MP3 FOLDER –FOLDER +
SOUND
*The button has a tactile dot.
*OPERATE
(POWER)

6
CFD-S20CP
•Theequipmentcanberemo vedusingthef ollo wingprocedure .
SECTION 3
DISASSEMBLY
3-1. CABINET TOP ASSY
(Page 7)
3-2. CABINET FRONT ASSY,
CABINET REAR ASSY
(Page 7)
3-11. CD BLOCK ASSY
(Page 12)
SET
3-3. WIRES
(Page 8)
3-4. MD BLOCK
(Page 8) 3-7. MAIN BOARD (Page 10)
3-5. CASSETTE DOOR ASSY
(Page 9)
3-6. LCD BOARD,
CONTROL (4) BOARD
(Page 9)
3-10. CD LID
(Page 11)
3-8. TUNER BOARD
(Page 10)
3-13. R/P HEAD (HRP301),
TC BOARD
(Page 13)
3-14. MOTOR ASSY (M801),
MAIN BELT (B),
SUB BELT (B)
(Page 13)
3-9. POWER BOARD
(Page 11)
3-12. OPTICAL PICK-UP
(Page 12)

7
CFD-S20CP
3-2. CABINET FRONT ASSY, CABINET REAR ASSY
3-1. CABINETTOP ASSY
3 screw (2.6)
2 screw (2.6)
4 screw (2.6)
5 CNJ804
8 cabinet top assy
6 CNJ806
7 connector
(S801)
claw
cassette door assy
CD lid
handle
1 BTP 2.6x6
1 PWH 2.6x10
3 CNP323
4 CNP801
5 CNJ807
6 CNJ805
qa cabinet front assy
qs cabinet rear assy
2 HEADPHONE board
7 screw (2.6)
8 screw (2.6)
9 battery lid
0 screw (2.6)
Note:Follo wthedisassemb lyprocedureinthen umer icalordergiv en.

8
CFD-S20CP
3-4. MD BLOCK
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.
A
DE
B
Cfrom HEADPHONE board
cabinet front
cabinet rear
1 BVTP 2.6x10
2 BVTP 2.6x10
3 MD block

9
CFD-S20CP
3-6. LCD BOARD, CONTROL (4) BOARD
3-5. CASSETTE DOOR ASSY
1 BVTP 2.6x1
0
3 cassette door assy
flexible flat cable
cassette spring
2 damper
4 BVTP 2.6x10
5 claws
6 LCD board
1 BVTP (2.6)
3 cassette holder
2
7
CONTROL (4) board
cassette door sub assy
claw
claw

10
CFD-S20CP
3-8.TUNER BOARD
3-7. MAIN BOARD
6 BVTP 2.6x10
7 MAIN board
3 CNP322
4 CNP902
5 CNP1
1 PWH 2.6x10
2 HEADPHONE board
1 B 3x
8
4 BVTP 2.6x10
5 claws
63
CNP1
7 TUNER board
2 telescopic antenna

11
CFD-S20CP
3-9. POWER BOARD
3-10. CD LID
3 BVTP 2.6x10
4 BVTP 2.6x10
5 BVTP 2.6x10
6 POWER board
1 CNP902
2 CNP901
3 CD lid
1 claw
CD spring
2 claw

12
CFD-S20CP
3-12. OPTICAL PICK-UP
3-11. CD BLOCK ASSY
1 PWH 2.6x10
4 CD block ass
y
claws
2 PWH 2.6x10
3 CD cover
2 PWB tapping (M2
)
1 gear (A)
claw
3 PWB tapping (M2)
5 sled shaft
6 optical pick-up
4

13
CFD-S20CP
3-14. MOTOR ASSY (M801), MAIN BELT (B), SUB BELT (B)
3-13. R/P HEAD (HRP301),TC BOARD
2 BVTP 2x4
1 R/P head (HRP301)
3 TC board
4 Removal the solders.
claws
lug
1 bind DT M2x6
2 bind DT M2x6
5 pan M2.6x4.5
3 main belt (B)
4 sub belt (B)
6 motor assy (M801
)

14
CFD-S20CP
i jack (J321)
set
32
Ω
test tape
WS-48A
(3 kHz, 0 dB)
digital frequency
counter
TAPE SECTION 0 dB = 0.775V
• Standard Output Level
Output terminal HP OUT
load impedance 32 Ω
output signal level 0.25 V (–10 dB)
•TestTape
Type Signal Used for
WS-48A 3 kHz, 0 dB tape speed adjustment
Tape Speed Adjustment
Procedure:
Mode: playback
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 demagne-
tizer. (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 0.15 – 0.53 mN • m
Back Tension CQ-102C (1.5 – 5.5 g • cm)
(0.021 – 0.076 oz • inch)
more than 5.88 mN • m
FF CQ-201B (more than 60 g • cm)
(more than 0.83 oz • inch)
more than 5.88 mN • m
REW CQ-201B (more than 60 g • cm)
(more than 0.83 oz • inch)
TapeTension Measurement
Mode Tension meter Meter Reading
FWD CQ-403A more than 100 g
(more than 3.53 oz)
SECTION 5
ELECTRICAL ADJUSTMENTS
SECTION 4
MECHANICAL ADJUSTMENTS
Adjust so that the value on the digital frequency counter is
3,000 Hz.
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:
Tape speed adjustment
control inside motor

15
CFD-S20CP
digital
voltmeter
100 kΩ
TP (VT)
ijack (J321)
set
32 Ω
level meter
(range: 0.5–5 V ac
)
Put the lead-wire
antenna close to
the set.
AM RF signal
generator
TP (FM IN)
FM RF signal
generator
0.01
µ F
set
TUNER SECTION 0 dB = 1 µV
•FM Section
Setting:
RADIO BAND•AUTO PRESET button: FM
75 kHz frequency
deviation by 1 kHz signal
output level : as low as possible
•AM Section
Setting:
RADIO BAND•AUTO PRESET button: MW or LW
30% amplitude
modulation by
400 Hz signal
•Connecting Level Meter (FM, MW and LW)
•Connecting DigitalVoltmeter (FM, MW and LW)
•Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
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 ± 0.3V 3.0 ± 0.2 V
Adjustment Part <confirmation> L2
FMTRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1 CT1
87.5 MHz 108 MHz
MW IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz
MW FREQUENCY COVERAGE
CHECK
Frequency Display 531 kHz 1,611 kHz
Reading on Digital voltmeter 1.0 ± 0.5V 5.2 ± 0.6 V
Adjustment Part <confirmation> <confirmation>
MWTRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3-1 CT3
621 kHz 1,404 kHz
LW FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 153 kHz 279 kHz
Reading on Digital voltmeter 0.6 ± 0.3V 5.0 ± 0.1 V
Adjustment Part <confirmation> L4
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3-2 CT5
162 kHz 261 kHz
Adjustment Location: See page 16.

16
CFD-S20CP
Adjustment Location:
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 4and pin qa (or
TP (RF) and TP (VREF)).
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the NX(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)
Test Point:
RF level :
0.85 ±0.2 Vp-p
VOLT/DIV : 50 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
When observing the eye pattern, set the oscilloscope forAC range
and raise vertical sensitivity.
L4
TP (FM IN)
(CONDUCTOR SIDE)
CT1
IC1 IC2
CT3
CT5
L1
L2
T2
T1
L3-2 L3-1
– MAIN board (component side) –
L4
LW
FREQUENCY
COVERAGE
ADJUSTMENT
L2
FM
FREQUENCY
COVERAGE
ADJUSTMENT
CT5, L3-2
LW
TRACKING
ADJUSTMENT
CT3, L3-1
MW
TRACKING
ADJUSTMENT
CT1, L1
FM
TRACKING
ADJUSTMENT
T1
MW
IF
ADJUSTMENT
T2
FM
IF
ADJUSTMENT
TP (VT)
(CONDUCTOR SIDE)
R702
R704
R706
R708
R709
R711
R729
R730
R745
C701 C
7
C705
C706
C740
C710
C711
C712
C713
C714
C716
C717
C718
C719
C720
C721
R710
R755
R757
R759
R724
R725
R726
R727
R728
R732
R733
R734
R735
R736
R737
R740
R1001
R1002
R1003
R1004
R1
0
C708
C746
C742
C743
C744
C760
C761
C762
C763
C764
C766
C767
C737
C732
C733
C722
C756
C1066
C1067
C1068
C1069
C1
0
C
1074
R763
R764
R723
IC701
R765 FB1001
1
002
FB703
FB704
CNP701
C707
C715
C709
TP(RF)
TP
(VREF)
TP
(FE)
TP
(TE)
TX TY
FX FY
SPX SPY
SLX SLY
TP
(RF)
TP
(VREF)
TP
(TE)
– CD board (conductor side) –

17
CFD-S20CP
1LRSY I CD L/R clock input
2ADDATA O Audio data output
3ADBCK O Audio bit clock output
4ADLRCK O Audio L/R clock output
5C2FIN I CD C2 error flag input
6VSS — Ground
7CKIN I System clock (16.9344 MHz) input
8VSS — 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 MP3 data request flag output (H: active)/DRAM data request flag input (H: active)
(Not used. (Open))
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 CDROM-CRC flag output (H: active)/DRAM data output enable signal output
(H: active) (Not used. (Open))
68 DVDD6 — Power supply pin for internal logic.
69 VSS — Ground
70 WOK I DRAM write OK input (at CD-DA, H: active)/DRAM data request flag input
(at CD-ROM, H: active)
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

18
CFD-S20CP
Pin No. Pin Name I/O Pin Description
71 CNTOK O Data connecting point detection completion flag output (at CD-DA, H: active)/DRAM
data serial output (at CD-ROM, H: active) (Not used. (Open))
72 OVF O DRAM write discontinue flag output (at CD-DA, H: active)/DRAM data transfer
clock output (at CD-ROM, H: active) (Not used. (Open))
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

CFD-S20CP
19 19
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
Pin No. Pin Name I/O Pin Description
6-2. CIRCUIT BOARDS LOCATION
• IC801 µPD784216AGF-527-3BA (SYSTEM CONTROLLER) (MAIN BOARD)
Pin No. Pin Name I/O Pin Description
1TU-CE O PLL chip enable output
2TU-DATA O PLL serial data output
3TU-CLK O PLL serial data transfer clock output
4TU-COUNT I PLL serial count data input
5TU-MUTE O Tuner muting ON/OFF control signal output (L: muting ON)
6DEST1 I Destination setting input (Fixed at L)
7 DEST2 I Destination setting input (Fixed at H)
8TEST-B O Fixed at L in this set.
9VDD — 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 signal 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 (+3.3V)
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)
CONTROL (4) board TUNER board
TC board
BATTERY (1) board
BATTERY (2) board
MAIN board
CD board
LCD board
HEADPHONE board
POWER board
CONTROL (2) board
CONTROL (3) boar
d
CONTROL (1) board

CFD-S20CP
2020
A
C
B
F
E
D
A
C
B
D
LD
PD
VR
F
T+
T–
F+
F–
SL+
SL–
SP+
SP–
E
VREF
LD
PD
LD POWER
CONTROLLER
Q701 APC
FIN2
FIN1
LDD
LDS
TIN2
TIN1
VREF
RF
10
9
11
80
7
79
48
20
17
18
TRACKING
COIL
DRIVE
10
7
FOCUS
COIL
DRIVE
TIN
FIN
25
SLIN
SLED
MOTOR
DRIVE
3
SPINDLE
MOTOR
DRIVE
SPIN
VREF
OPIN
MUTE
T+
T–
12
11
F+
F–
26
27
SL+
SL–
2
1
SP+
SP–
TRACKING
COIL
FOCUS
COIL
OPTICAL PICK-UP
BLOCK
(KSS-213R)
M
M
M702
SLED
MOTOR
M701
SPINDLE
MOTOR
SLED/SPINDLE
MOTOR DRIVER,
TRACKING/FOCUS
COIL DRIVER
IC702
S701
(LIMIT)
EFMIN
HFL
AGC
PH(RFENV)
FE
TE
VREF
CONT1 FSEQ CONT4 DRF RES DI CE CL WRQ DO XOUT XIN
LCHO
RCHO
DATA
DATACK
LRSY
ASDFIN
ASDACK
ASLRCK
CF2
FSX/16MIN
16MOUT
1
3
67
TDDTD
FD
SP
SL
31 72 25 66 63 61 62 49 48
73
74
75
76
77
78
80
1
2
3
4
5
9
59
58
57
56
55
52
50
65 64
42
45
RF AMP,
SYSTEM SERVO PROCESSOR,
DIGITAL SIGNAL PROCESSOR
IC701
59
48
72 77 74 76 75 50 7378
X701
16.93MHz
CE(CD)
DI(CD)
CL(CD)
WRQ(CD)
RES(CD)
DRF(CD)
FSEQ(CD)
DO(CD)
79
44
RESB
49
INTB(MP3)
80
CE
70
CL(MP3)
69
CMDIN(MP3)
68
CMDOUT(MP3)
RESB INTB CE CL CMDIN CMDOUT
CD DOOR
VH
93
P-CON
58
REG-CHK
SYSTEM CONTROLLER
IC801 (1/2)
CD +3.3V
SWITCH
Q806,808
BATTERY
CHECK
Q804,805
POWER
CONTROLLER
Q807,D802
AUDIO+6V
REG
Q955,D953
POWER
SWITCH
Q952,953
POWER
SWITCH
Q951
D.VDD (3.3V)
COM. 3.3V
CD-CONT
S801
PUSH
OPEN/
CLOSE
VDD (SW)
AUDIO 6V
D901 – 904
RECT
F902
T901
POWER
TRANSFORMER
J901
AC IN
Signal path
: CD
CLV,CAV
CONTROL
PLL
VCEC
SWITCH
ERROR
CORRECTION
AUDIO CD
A/D
CONVERTER,
SERVO
PROCESSOR
FRAME SYNC
DETECT,PROTECT
INSERT
EFM DECODER
INTERPOLATION
MUTE
&
ATTENUATION
DEEMPHASIS
8FS
DIGITAL
FILTER
&
1-bit DAC
SERIAL
OUT
EXTERNAL
AUDIO IN
LPF
SLICE
LEVEL
CONTROL
GENERAL
PURPOSE
PORT
COMMAND
INTERFACE
CLOCK
GENERATOR
23
15
FD
SL
SP
TD
VREF
VREF
VREF
CD_IN_R
DATACK
LRSY
7960 DATA IN
ADDATA
ADBCK
ADLRCK
CF2IN
WEB OEB CASLB CASUB RASB
CKOUT
754
41 44 43 45 42
16 30 31 29 15
23-30,33-40 60-53,50
18-21,24-28
2-5,7-10,
35-38,40-43
CKIN
CMDOUT
CMDIN
CL
CE
INTB
RESB
CMDOUT
CMDIN
CL
CE
INTB
RESB
CD_IN_ L
DRY BATTERY
SIZE " D "
(IEC DESIGNATION R20)
6PCS,9V
4.5V
4.5V
D/A
CONVERTER
PH/BH
+3.3V
REG
Q957,D957 RADIO 6V
P.VDD (6.2V)
60
VM
20
FDD SPDO SLDO
21 22 23
+3.3V
REG
IC803
3.3V 23
2
D951
ICP301
Q803
AC-CHK
BATT COM
VDD
AC-HI
U-COM
(VDD)
MDATA0
I
MDATA15
MADRS0
I
MADRS8
WE
OE
LCAS
UCAS
RAS
DQ0-DQ15 A0-A8
MPS DECODER,
CD-ROM DECODER,
ANTI-SHOK
CONTROLLER
IC1001
SDRAM
IC1002
6-3. BLOCK DIAGRAM — CD SECTION —
(Page 21)
(Page 21)