Sony CFD-S26 User Manual

CFD-S26

SERVICE MANUAL

Ver 1.2 2002. 06

Photo: SILVER

CD

Section

TC

Section

US Model

E Model

Australian Model

Model Name Using Similar Mechanism CFD-S22/S32

CD Mechanism Type KSM-213CDP

Optical Pick-up Name KSS-213C

Model Name Using Similar Mechanism CFD-V5

Tape Transport Mechanism Type MF-V5-117

AUDIO POWER SPECIFICATIONS (US model)

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: 87.6 - 108 MHz
US, E92, MX model:
AM: 530 - 1,710 kHz
SP, AR, AUS, E4 model:
AM: 531 - 1,602 kHz (9 kHz step)
AM: 530 - 1,610 kHz (10 kHz step)

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 –

9-873-112-13

2002F0400-1

© 2002. 06

CD RADIO CASSETTE-CORDER

Sony Corporation

Personal Audio Company

Published by Sony Engineering Corporation

1

CFD-S26

General

Speaker

Full range: 10 cm dia.,

3.2 ohms, cone type (2)

Outputs

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

Power output (excluding US model)

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

Power requirements

For CD radio cassette-corder:
US, E92, MX model:
120 V AC, 60 Hz
SP, AR, AUS model:
230 V AC, 50 Hz
E4 model:
110 - 120 V/220 - 240 V AC selectable, 50/60 Hz
9 V DC, 6 size D (R20) batteries

Power consumption

AC 20 W

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. 420 × 159 × 284 mm (w/h/d)

5/8 × 6 3/8 × 11 1/4 inches) (incl. projecting parts)

(16

Mass

Approx. 3.8 kg (8 lb. 6 oz.) (incl. batteries)

Supplied accessories

AC power cord (1)

Design and specifications are subject to change without
notice.

• Abbreviation
AR : Argentina model
AUS : Australian model
E4 : AC 110-120V/220-240V area in E model
E92 : AC 120V area in E model
MX : Mexican model
SP : Singapore 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.

2

CFD-S26

SAFETY CHECK-OUT (US model)

After correcting the original service problem, perform the following
safety check 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 TEST

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 microamperes).
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)

TABLE OF CONTENTS

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

2. GENERAL ............................................................................ 7

3. DISASSEMBLY

3-1. Cabinet (Front) Sub Assy .................................................... 8

3-2. Wires ................................................................................... 9

3-3. Power (1) Board, Power (2) Board...................................... 9

3-4. Voltage Select Board ......................................................... 10

3-5. Cabinet (Upper) Assy ........................................................ 10

3-6. Main Board ....................................................................... 11

3-7. CD Mechanism Block ....................................................... 11

3-8. Tape Mechanism Block ..................................................... 12

3-9. Holder Assy, Cassette ........................................................ 12

3-10. PRE Board ......................................................................... 13

3-11. Belt, M801 (Capstan/Reel Motor),

HRP301 (Head, Magnetic) ................................................ 13

3-12. Optical Pick-up ................................................................. 14

4. MECHANICAL ADJUSTMENTS ............................... 15

5. ELECTRICAL ADJUSTMENTS

Tape Section .......................................................................... 15

Tuner Section......................................................................... 16

CD Section ............................................................................ 17

To Exposed Metal
Parts on Set

0.15µF

1.5k

Ω

Earth Ground

AC
voltmeter
(0.75V)

Fig. A. Using an AC voltmeter to check AC leakage.

6. DIAGRAMS

6-1. IC Pin Description ............................................................. 18

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

6-3. Block Diagram – CD Section (Former Type) – ................ 20

6-4. Block Diagram – Main Section (Former Type) – .............. 21

6-5. Printed Wiring Board – CD Section (Former Type) –....... 22

6-6. Schematic Diagram – CD Section (Former Type) – ......... 23

6-7. Printed Wiring Boards – Main Section (Former Type) – .. 24

Schematic Diagram – Main Section (1/4) (Former Type) – ..

6-8.
6-9.

Schematic Diagram – Main Section (2/4) (Former Type) – ..

6-10.

Schematic Diagram – Main Section (3/4) (Former Type) – ..

6-11.

Schematic Diagram – Main Section (4/4) (Former Type) – ..

6-12.

Printed Wiring Boards – Control Section (Former Type) – ...

6-13.

Schematic Diagrams – Control Section (Former Type) – ......

6-14.

Printed Wiring Boards – Power Supply Section (Former Type) – ..

6-15.

Schematic Diagrams – Power Supply Section (Former Type) – ....

6-16. Block Diagram – CD Section (New Type) – ..................... 33

6-17. Block Diagram – Main Section (New Type) – .................. 34

6-18. Printed Wiring Board – CD Section (New Type) – ........... 35

6-19. Schematic Diagram – CD Section (New Type) – .............. 36

6-20. Printed Wiring Boards – Main Section (New Type) – ...... 37

6-21. Schematic Diagram – Main Section (1/4) (New Type) – .. 38
6-22. Schematic Diagram – Main Section (2/4) (New Type) – .. 39
6-23. Schematic Diagram – Main Section (3/4) (New Type) – .. 40
6-24. Schematic Diagram – Main Section (4/4) (New Type) – .. 41
6-25. Printed Wiring Boards – Control Section (New Type) – ... 42

6-26. Schematic Diagrams – Control Section (New Type) – ..... 43

6-27.

Printed Wiring Boards – Power Supply Section (New Type) – ..
6-28.

Schematic Diagrams – Power Supply Section (New Type)

25
26
27
28
29
30
31
32

44

– .... 45

7. EXPLODED VIEWS

7-1. Cabinet (Front) Section ..................................................... 48

7-2. Cabinet (Rear) Section ...................................................... 49

7-3. Cabinet (Upper) Section .................................................... 50

7-4. Tape Mechanism Section-1 ............................................... 52

7-5. Tape Mechanism Section-2 ............................................... 53

7-6. Optical Pick-up Section .................................................... 54

8. ELECTRICAL PARTS LIST......................................... 55

3

CFD-S26

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 FUNCTION button to
CD position.

2. Open the lid (CD).

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

4. Press the CD N X 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

NOTE ON PERFORMING SERVICE AND INSPECTION

The main, CD, control (1), control (2), control (3), battery terminal (1), battery terminal (2), power (1) and power (2) board have two types,
former type and new type.
When performing service and inspection, check the part number on the main, CD, control (1), control (2), control (3), battery terminal (1),
battery terminal (2), power (1) and power (2) board.

– MAIN BOARD (component side) –

MAIN Board Part No.
Former type : 1-679-963-12
New type : 1-679-963-14

4

– CONTROL (1) BOARD (component side) –

– CONTROL (2) BOARD (component side) –

CONTROL (2) Board Part No.
Former type : 1-679-967-12
New type : 1-679-967-14

–

CFD-S26

CONTROL (1) Board Part No.
Former type : 1-679-966-12
New type : 1-679-966-14

– CD BOARD (component side) –

– CONTROL (3) BOARD (component side)

CD Board Part No.
Former type : 1-680-943-11
New type : 1-680-943-13

CONTROL (3) Board Part No.
Former type : 1-679-968-12
New type : 1-679-968-14

5

CFD-S26

–

–

–

– BATTERY TERMINAL (1) BOARD (component side)

BATTERY TERMINAL (1) Board Part No.
Former type : 1-679-964-12
New type : 1-679-964-14

– BATTERY TERMINAL (2) BOARD (component side)

BATTERY TERMINAL (2) Board Part No.
Former type : 1-679-965-12
New type : 1-679-965-14

– POWER (1) BOARD (component side)

POWER (1) Board Part No.
Former type : 1-679-969-12
New type : 1-679-969-14

– POWER (2) BOARD (component side) –

POWER (2) Board Part No.
Former type : 1-679-970-12
New type : 1-679-970-14

6

Location of controls

SECTION 2

GENERAL

CFD-S26

This section is extracted
from instruction manual.

N X

SLEEP

TUNE –, +
.,>

DISPLAY ENT•
MEMORY

REC PLAY REW FF

Number buttons for
CD/RADIO DIRECT OPERATION

Tape
compartment

POWER

MODE

OPR/BATT
indicator

STOP/EJECT

PAUSE

Display

Z PUSH
OPEN/CLOSE

CD
compartment

VOLUME +,–

RADIO BAND•
AUTO PRESET

x

MEGA BASS

TAPE

CD

i (headphones) jack

Tip

To listen through headphones, connect the headphones to the i (headphones) jack.

7

CFD-S26

SECTION 3

DISASSEMBLY

• The equipment can be removed using the following procedure.

Set Cabinet (Front) Sub Assy Wires

Cabinet (Upper) Assy

Power (1) Board, Power (2) Board

Voltage Select Board

Tape Mechanism Block

Holder Assy, Cassette

PRE Board

CD Mechanism Block

Optical Pick-up

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

3-1. CABINET (FRONT) SUB ASSY

9

cabinet (front) sub assy

6

BVTP 3x12

7

CNP323

Main Board

Belt,M801(Capstan/Reel Motor),
HRP301 (Head, Magnetic)

lid (CD)

8

CNP805

3

BVTP 3x12

4

BVTP 3x12

5

BVTP 3x12

2

BVTP 3x12

1

lid, battery case

8

3-2. 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.

CFD-S26

CABINET (FRONT

AB

from speaker

3-3. POWER (1) BOARD, POWER (2) BOARD

CD

from MAIN board

CABINET (REAR)

E

from CONTROL (1) board

3

BVTP 3x10

POWER (2) board

2

BVTP 3x10

5

CNP901

6

CNP902

4

1

BVTP 3x10

POWER (1) board

7

9

CFD-S26

y

3-4. VOLTAGE SELECT BOARD

(E4 model only)

• Abbreviation
E4 : AC 110-120V/220-240V area in E model

3-5. CABINET (UPPER) ASSY

7

handle

1

1

BVTP 3x10

BVTP 3x10

4

BVTP 3x12

2

VOLTAGE SELECT board

(E4 model only)

3

holder assy, cassette

6

BVTP 3x12

5

lid (CD)

2

BVTP 3x12

8

cabinet (upper) ass

10

cabinet (rear)

3-6. MAIN BOARD

1

6

BVTP 3x10

2

connector

(S801)

terminal, antenna

3

CNP702

5

BVTP 3x10

8

MAIN board

7

CNP301

4

CNP302

CFD-S26

3-7. CD MECHANISM BLOCK

1

PWH 2.6x10

2

PWH 2.6x10

3

CD mechanism block

(KSM-213CDP)

11

CFD-S26

k

3-8. TAPE MECHANISM BLOCK

1

BVTP 3x10

2

BVTP 3x10

3

tape mechanism bloc

(MF-V5-117)

3-9. HOLDER ASSY, CASSETTE

3

1

BVTP 3x10

2

damper

4

holder assy, cassette

12

3-10. PRE BOARD

)

3

Removal the solders.

1

BVTT 2x6

4

PRE board

2

CFD-S26

claw

claw

3-11. BELT, M801 (CAPSTAN/REEL MOTOR), HRP301 (HEAD, MAGNETIC)

6

HRP301 (head, magnetic)

1

screws

B 2.6x5

mechanism deck

5

claws

3

belt

2

4

M801

(capstan/reel motor

13

CFD-S26

3-12. OPTICAL PICK-UP

2

claws

9

optical pick-up

4

5

claw

3

1

claws

gear (A)

cover, CD

7

6

claw

8

sled shaft

14

)

SECTION 4

MECHANICAL ADJUSTMENTS

CFD-S26

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 Tape

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:

Tape speed adjustment
control inside motor

15

CFD-S26

)

TUNER SECTION 0 dB = 1 µV

• FM Section

Setting:

RADIO (BAND) button: FM

FM RF signal
generator

TP (JW2)

0.01 µF

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

• AM Section

Setting:

RADIO (BAND) button: AM

AM RF signal
generator

Put the lead-wire
antenna close to
the set.

30% amplitude
modulation by
400 Hz signal

• Connecting Level Meter (FM and AM)

level meter
(range: 0.5–5 V ac

32 Ω

set

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 530 kHz 1,710 kHz

Reading on Digital voltmeter 1.0 ± 0.1 V 5.3 ± 0.7 V

Adjustment Part L4 <confirmation>

AM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L3 CT3

620 kHz 1,400 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 17.

16

CFD-S26

T

Adjustment Location:

– MAIN board (component side) –

L4

AM

FREQUENCY

COVERAGE

ADJUSTMENT

TP (VT)

(CONDUCTOR SIDE)

ADJUSTMENT

CT1, L1

FM

TRACKING

ADJUSTMENT

L4

CT3

ADJUSTMENT

T2

FM

IF

TP (JW1)

L2

CT1

L1

L3

L2

FM

FREQUENCY

COVERAGE

T1

AM

IF

ADJUSTMEN

T2

T1

CT3, L3

AM

TRACKING

ADJUSTMENT

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 CD N X 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.

Test Point:

– CD board (conductor side) –

TP

(RF)

TP

(RF)

TP

(FE)

TP

(FE)

TP

(TE)

TP

(VREF)

TP

(VREF)

17

CFD-S26

SECTION 6

DIAGRAMS

6-1. IC PIN DESCRIPTION

• IC802 uPD789477-907 (SYSTEM CONTROLLER)

Pin No. Pin Name I/O Pin Description

1, 2 NC — Not used. (Open)

3 – 5 VLC2 – 0 O LCD drive voltage output

6 – 9 COM0 – 3 O LCD drive common output

10 – 26 S0 – 16 O LCD drive segment output

27 – 29 S17 – 19 O LCD drive segment output Not used. (Open)

30 BL-CONT — Not used. (Open)

31 A-MUTE O Audio mute output H: Mute

32 WB/FM.AM.TV O Tuner output level attenuator switch Not used. (Open)

33 DBB O MEGA BASS control output H: MEGA BASS off, L: MEGA BASS on

34 P-CON O System power control output H: PCON

35 AC-CHK I AC power supply detection signal input “L”: AC in

36 CD O CD function output H: CD

37 TAPE O Tape function output H: Tape

38 AVDD — Analog power supply pin for A/D converter (+3.3 V)

39 BTT-CHK-H I Battery check input for Hi-voltage

40 BTT-CHK-M I Battery check input for Mid-voltage

41 REC I Tape record signal input H: REC

42 – 45 KEY1 – 4 I Key input

46 MODE CHK I Mode set input

47 AGND — Analog GND for A/D converter

48 REMOTE I Sircs receiver data input

49 TC-PLAY I Tape play switch input L: Tape

50 WP/INI O Initial set signal output

51 CD-DOOR I CD door open/close switch input L: Close

52 C-WRQ I CD command data input

53 C-DOUT I CD sireal data input

54 C-DIN O CD sireal data output

55 C-CLK I Serial data transfer clock signal input

56 R-COUNT I Tuner PLL data input

57 R-DATA O Tuner PLL data output

58 R-CLK O Tuner PLL clock output

59 R-LAT O Tuner PLL latch output

60 B-MUTE O Tuner mute signal output H: Mute

61 C-DRF I CD DRF signal input

62 C-CE O CD SENSE read clock output

63 C-FSEQ I CD frame SYNC input

64 C-XRT O CD system reset output

65 V-LAT O Volume latch output Not used. (Open)

66 V-DATA O Volume data output

67 V-CLK O Volume clock output

68 SUR O Surround switch signal output Not used. (Open)

69 ICO — Connected to GND

70 XT1 I Sub system oscillation input (32.768 kHz)

71 XT2 O Sub system oscillation output (32.768 kHz)

72 VDD — Main power supply pin for A/D converter (+3.3 V)

73 VSS — Main GND

74 X1 I Main system oscillation input (4.19 MHz)

18

Pin No. Pin Name I/O Pin Description

75 X2 O Main system oscillation output (4.19 MHz)

76 RST I System reset input

77 ISS1 O ISS1 output Not used. (Open)

78 ISS2 O ISS2 output Not used. (Open)

79 SCL O EEPROM clock output

80 SDA I/O EEPROM input/output

6-2. CIRCUIT BOARDS LOCATION

POWER (1) board

POWER (2) board

PRE board

CFD-S26

VOLTAGE SELECT board
(E4 model only)

CONTROL (1) board

CONTROL (3) board

CONTROL (2) board

BATTERY TERMINAL (1) board

MAIN board

CD board

BATTERY TERMINAL (2) board

19 19

CFD-S26

6-3. BLOCK DIAGRAM — CD SECTION (FORMER TYPE) —

CD BOARD MAIN BOARD (1/2)

CNP701

A

C

B

D

LD

PD

E

F

VREF

12

10

11

13

7

5

14

9

16

A

C

B

D

LD

PD

E

F

VREF

LD POWER

CONTROLLER

Q701

VREF

FIN2

FIN1

7

LDD

80

79

9

10

11

LDS

TIN1

TIN2

TE

VREF

APC

PH/BH

LCHO

RCHO

42

45

RF

48

CONVERTER

D/A

EFMIN

3

AGC

HFL
PH(RFENV)

FE
TE

VREF

SLICE
LEVEL

CONTROL

A/D

CONVERTER,

SERVO

PROCESSOR

CLV,CAV

CONTROL

SWITCH

ERROR

CORRECTION

AUDIO CD

FRAME SYNC

DETECT,PROTECT

INSERT

EFM DECODER

GENERAL
PURPOSE

PORT

INTERPOLATION

MUTE

&
ATTENUATION
DEEMPHASIS

SYSTEM SERVO PROCESSOR,
DIGITAL SIGNAL PROCESSOR

PLL

VCEC

COMMAND
INTERFACE

RF AMP,

IC701

8FS

DIGITAL

FILTER

&

1-bit DAC

GENERATOR

LPF

CLOCK

CNP702(2/2) CNP804(2/2)

CD R

12

33

CNP806(1/3)

CD_IN_ L

1

(Page 21)

OPTICAL PICK-UP

BLOCK

(KSS-213C)

TRACKING

COIL

FOCUS

COIL

M702
SLED

MOTOR

M701

SPINDLE

MOTOR

S701

(LIMIT)

M

M

3
2

4
1

PUSH

Signal path
: CD

R-ch : same as L-ch.

Abbreviation
AUS : Australian model
SP : Singapore model
E92 : AC 120V area in E model

T+
T–

F+
F–

SL+
SL–

SP+
SP–

S801

OPEN/
CLOSE

KH803
1
2

CD 3.3V

12
11

17
18

26
27

T+
T–

F+
F–

SL+
SL–

SP+

2

SP–

1

SLED/SPINDLE

MOTOR DRIVER,

TRACKING/FOCUS

COIL DRIVER

CD DOOR

SWITCH

IC702

Q820

TRACKING

COIL

DRIVE

FOCUS

COIL

DRIVE

SLED

MOTOR

DRIVE

SPINDLE

MOTOR

DRIVE

CD +3.3V

REG

Q957

51

CD DOOR

CD 6V

TIN

9

FIN

19

7

MUTE

SLIN

25

SPIN

3

VREF

23

OPIN

15

2

(Page 21)

CD

20

TD

FD

SL

SP

CD +6.9V

SWITCH

Q817,818

TDDTD

FDD

21 22 23

FD

VREF

SPDO

SP

SLDO

SL

BTT-CHK-M

40

BATTERY

CHECK

Q804,806

BTT-CHK-H

39

CONTROLLER

Q819,D802

RADIO 6V

VDD(SW)

SP MODEL

POWER

CNP702(1/2)

CNP804(1/2)

SYSTEM CONTROLLER

IC802 (1/2)

P-CON

34

SP MODEL

D951

US, E, AUS

MODEL

CONT1

FSEQ

FSEQ

C-FSEQ

CONT4

+3.3V REG

IC801

AUDIO+6V

REG

Q955,D953

POWER

SWITCH

Q952,953

POWER

SWITCH

Q951

RES

XRT

C-XRT

CD

23

SP MODEL

DRF

67

31 72 25 66 63 61 62 49 4865 64

43 10 98 76

11 12 5 6 7 8 9 10

DRF

61 63 54 62 55 52 5364

C-DRF

3.3V

D952

DICECL

CE

DIN

C-CE

C-DIN

AC-CHK

35

Q801

CL

WRQ

WRQ

C-CLK

DO

DOUT

C-WRQ

C-DOUT

KH321

5

XOUT

XIN

X701

33.86MHz

CNP902

1 1

22

33

D901 - 904 F902

BATT.COM

AC-HI

VDD

RECT

AUS,SP MODEL

US,E92 MODEL

POWER (1)

KH903 KH905

121

2

POWER (2)

BOARD

CNP901

1

3

BOARD

T901

POWER

TRANSFORMER

CNP903(1/2)

1

CNP903(2/2)

3

BATTERY

TERMINAL(1)

BOARD

(IEC DESIGNATION R20)

CNP904

4

1

2

DRY BATTERY

SIZE " D "

6PCS,9V

BATTERY

TERMINAL(2)

BOARD

CNJ901

AC IN

4.5V

4.5V

2020

6-4. BLOCK DIAGRAM — MAIN SECTION (FORMER TYPE) —

CFD-S26

(Page 20)

1

HRP301

RECORD/PLAYBACK

L-CH

R-CH

ERASE HEAD

CD_IN_L

HEAD

HE301

ANT1

FM

TELESCOPIC

ANTENNA

PRE BOARD

CNP301 (1/3)

3

S301

(REC/PB)

REC

PB

CNP301 (2/3)

CNP806 (2/3)

VDD(SW)

R.RO

9

R.IN

8

R.LINE

S16

LP-OUT

AM

OSC

AM

MIX

D1 D2

FM

MIX

FM

OSC

2124

14

L.RO

4

L.LINE

24

L.IN

5

6

REF

REC

21 22 16

T301

REC BIAS OSC

TUNER

R-LAT

5759 58 56

1 2 3 4

AM IN

FM IN

11 12

1920

OSC-OUT

MIX-OUT

FM OSC

L2L1 CT1

RADIO6V

CD_IN_R

-1

-2

6V

911

911

AUDIO 6V

SCL

SAD

7980

65

EEPROM

IC803

D324

CT3

TRACKING

CT3,L3

AM

AM

FREQUENCY

COVERAGE

D3

L3

AM

FERRITE-ROD

ANTENNA

RADIO 6V

CT1,L1

FM

TRACKING

L4

RADIO 6V

REC

41

REC

|

S0

COM0|COM3

10–266 – 9

LIQUID CRYSTAL
DISPLAY PANEL

LCD801

18

L4

RADIO 6V

AM OSC

AM
RF-IN

22 4 6

FM
RF-IN

2

FM
RF-OUT

DET

ALC 2

RADIO L

L.RAD

Q301

R-DATA

FM STEREO DEMODULATOR

FREQUENCY

COVERAGE

TU_IN_L

SYSTEM CONTROLLER

IC802 (2/2)

R-CLK

R-COUNT

XT171XT2

70

X801

32.768kHz

PLL

IC2

XOUT

T1

T1

AM IF

XIN

X1

75kHz

IC1

RADIO 6V

RADIO 6VRADIO 6V

20 19

FM/AM FRONT-END, IF DET,

L2

FM

REC/PB

PRE AMP

IC301

R.RAD

TU_IN_R

74X175

X802

4.19MHz

CF4

7

CF2

CNP301

(3/3)

TAPE

37

TAPE

R-CH

81

81

BUFFER

RESET

IC804

3.3V

IF IN

10

IF-OUT

IF

5

7

RST

76

1

2

L.LO

20

R.LO

18

LINE

17

TAPE

15

X2

MO/ST

13

14 17 13 18

LPF2/MO-ST

AM
IF-IN

FM
IF-IN

MAIN BOARD (2/2)

CNP806
(3/3)

5

CD

7

BAND8ST-IND

7

IF CUT

LPF1/BAND

AM

DET

BUFFER

FM

DET

QUAD

10

T2

RADIO 6V

CD

Q814

ST-IND

AF

T2

FM IF

VOLUME/SOUND CONTROLLER

LINE
AMP
Q125

60

DET-OUT

8

B-MUTE

16 15

VIN2

IC302

LOGIC

CONTROL

CLOCK4DATA

5

6736 66

V-CLK

VOL

MPX-IN

VOUT2

V-DATA

CD

(Page 20)

FM

MPX

IF CUT

POWER AMP

IC304

31

A-MUTE

11 5

49

TC-PLAY

LEVEL

DETECT

D323

TAPE

SWITCH

Q808

KEY142KEY243KEY344KEY4

7

MEGA
BASS

CONTROLLER

Q122

D322

MUTE

Q124

2

33

DBB

MODE CHK50WP/INI

46

Q813

Q812,D807

R-CH

45

5432

5432 8

D803

VDD(SW)

8

CNP805

CNP401

VDD(SW)

MOTOR

SWITCH

Q807

CONTROL (1)

CNP323

CNP302

3
4

1
2

1
2

3
4

CAPSTAN/REEL

SP301

SPEAKER

(L-CH)

SP302

SPEAKER

(R-CH)

S802

(TAPE PLAY)

M

M801

MOTOR

J321

i

BOARD

MUTE

R-OUT
L-OUT

KEY4
KEY3
KEY1

KEY2

KH402

41

41

11

R-CH

12

CNP404 KH405

CONTROL (2)

BOARD

S416-427
S413,414
S401-406

S411,412S407-409

CONTROL (3)

BOARD

12

12

D451

OPR/BATT

KH403

Signal path
: FM
: AM
: TAPE PLAY
: TAPE REC
: CD

21 21

R-ch : same as L-ch.

CFD-S26

6-5. PRINTED WIRING BOARD — CD SECTION (FORMER TYPE) — • Refer to page 19 for Circuit Boards Location.

THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)

Common Note on Schematic Diagrams:

• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in Ω and 1/
specified.

f

•

• C : panel designation.

Note: The components identified by mark 0 or dotted line

• A : B+ Line.

• H : adjustment for repair.

• Total current is measured with no cassette installed.

• Power voltage is dc 9V and fed with regulated dc power

• Voltages are taken with a VOM (Input impedance 10 MΩ).

• Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

• Abbreviation

Common Note on Printed Wiring Boards:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

•

• : Pattern from the side which enables seeing.

• Abbreviation

: internal component.

with mark 0 are critical for safety.
Replace only with part number specified.

supply from battery terminal.

Voltage variations may be noted due to normal produc­tion tolerances.

Voltage variations may be noted due to normal produc­tion tolerances.

F : FM
f : AM
E : PB
a : REC
J : CD

AR : Argentina model.
AUS : Australian model.
E4 : AC 110-120V/220-240V area in E model.
E92 : AC 120V area in E model.
MX : Mexican model.
SP : Singapore model.

f

: internal component.

AR : Argentina model.
AUS : Australian model.
E4 : AC 110-120V/220-240V area in E model.
E92 : AC 120V area in E model.
MX : Mexican model.
SP : Singapore model.

4

W or less unless otherwise

A

B

C

D

E

F

G

1

MAIN

BOARD

CNP804

(Page 24)

2345678910

• Semiconductor
Location

Ref. No. Location
IC701 D-5

IC702 I-4

Q701 G-5

FY
TYFXTX

TP(R-CH)

1

TP(L-CH)

TP

(RF)

TP

(TE)

TP

(FE)

TP

(VREF)

H

J

I

1-680-943-

2222

6-6. SCHEMATIC DIAGRAM — CD SECTION (FORMER TYPE) — • Refer to page 22 for Common Note on Schematic Diagrams and page 46 for IC Block Diagrams.

CFD-S26

(Page 26)

IC B/D

IC B/D

• Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : CD PLAY

• Waveforms (Mode: PLAY)

500mV/div 0.5µsec/div

1

IC7014 (RF)

23 23

0.85±0.2Vp-p

100mV/div 20µsec/div

2

Approx. 100mVp-p

IC701qd (FE)

100mV/div 20µsec/div

3

1.8V 1.8V

Approx. 100mVp-p

IC701qg (TE)

1V/div 0.05µsec/div

4

IC701rk (XOUT)

3.2Vp-p

33.86MHz