Sony CFD-E55L Service Manual

CFD-E55L

SERVICE MANUAL

Ver 1.0 1999. 11

CD
Section

TAPE
Section

AEP Model

UK Model

Model Name Using Similar Mechanism CFD-Z500
CD Mechanism Type KSM-213CDM
Optical Pick-up Name KSS-213C
Model Name Using Similar Mechanism CFD-Z500
Tape Transport Mechanism Type MF-Z500-117

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 +0/–0.5 dB

Wow and flutter

Below measurable limit

Radio section

Frequency range

FM 87.5 - 108 MHz

MW 531 - 1,611 kHz

LW 153 - 279 kHz

SPECIFICATIONS

IF

FM: 10.7 MHz
MW/LW: 450 kHz

Aerials

FM: Telescopic aerial
MW/LW: Built-in ferrite bar aerial

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): 70 - 13,000 Hz

General

Speaker

Full range: 8 cm (3

3.2 ohms, cone type (2)

Outputs

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

Maximum power output

2 W + 2 W

Power requirements

For CD radio cassette-corder:
230 V AC, 50 Hz

9 V DC, 6 R20 (size D) batteries
For memory back-up:

4.5 V DC, 3 R6 (size AA) batteries

1

⁄

4

in.) dia.,

Power consumption

AC 17 W

Battery life

For CD radio cassette-corder:

FM recording

Sony manganese SUM-1 (N): approx. 9 h

Sony alkaline AM-1 (N): approx. 19 h

Tape playback

Sony manganese SUM-1 (N): approx. 5 h

Sony alkaline AM-1 (N): approx. 14 h

CD playback

Sony manganese SUM-1 (N): approx. 1.5 h

Sony alkaline AM-1 (N) : approx. 7 h

Dimensions

Approx. 304 × 169 × 262 mm (w/h/d)

3

⁄4 × 10 3⁄

8

(12 × 6

Mass

Approx. 3.6 kg (7 lb. 15 oz) (incl. batteries)

Supplied accessories

AC power cord (1)

Design and specifications are subject to change
without notice.

inches) (incl. projecting parts)

MICROFILM

CD RADIO CASSETTE-CORDER

1. SERVICING NOTES.............................................. 3

2. GENERAL .................................................................. 4

3. DISASSEMBLY ........................................................ 7

CAUTION

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

4. MECHANICAL ADJUSTMENTS...................... 12

5. ELECTRICAL ADJUSTMENTS

Tape Deck Section ......................................................... 12

Tuner Section ................................................................. 13

CD Section ..................................................................... 15

6. DIAGRAMS

6-1. Block Diagram – CD Section – .................................... 17

6-2 Block Diagram – TUNER Section – ............................ 19

6-3. Block Diagram – MAIN Section – ............................... 21

6-4. Block Diagram – POWER SUPPLY Section – ............ 23

6-5. Printed Wiring Boards – CD Section – ........................ 27

6-6. Schematic Diagram – CD Section – ............................. 29

6-7. Printed Wiring Boards

– MAIN/POWER SUPPLY Section – ........................... 32

6-8. Schematic Diagram – MAIN (TUNER) Section – ...... 35

6-9. Schematic Diagram

– MAIN (AUDIO)/POWER SUPPLY Section – .......... 40

6-10. IC Pin Function Description .......................................... 43

6-11. Printed Wiring Boards – DISPLAY Section – ............. 45

6-12. Schematic Diagram – DISPLAY Section – .................. 47

7. EXPLODED VIEWS ............................................... 54

8. ELECTRICAL PARTS LIST .............................. 61

This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.

Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.

– 2 –

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
LINE WITH MARK 0 ON THE SCHEMATIC DIA GRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANU AL OR IN SUPPLEMENTS PUB­LISHED BY SONY.

SECTION 1

SERVICING NOTES

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

The laser diode in the optical pick-up block may suffer electro­static break-down because of the potential difference generated
by the charged electrostatic load, etc. on clothing and the human
body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emis­sion, observe from more than 30 cm away from the objective lens.

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.

LASER DIODE AND FOCUS SEARCH OPERATION
CHECK

1. T urn PO WER switch on with no disc inserted and make Func-

tion switch to CD position.

2. Open the lid for CD.

3. Turn on S701 as following figure.

4. Press the u button.

5. Confirm the laser diode emission while observing the object-

ing 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 the focus
search.

CHUCK PLATE JIG ON REPAIRING

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

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

S701

– 3 –

Basic Operations

SECTION 2

GENERAL

This section is extracted from
instruction manual.

Playing a CD

3

1

Z

H

S

P

U

O

2

O

E

P

S

E

O

N

L

/

C

Z

H

S

P

U

E

P

S

E

O

N

L

/

C

3

T

E

S

E

M

I

T

E

N

U

T

1, 2

Connect the supplied AC power cord (see page 26).

Press ZPUSH OPEN/CLOSE
down to open the CD
compartment and place the CD
on the CD compartment.

With the label side up

Close the lid of the CD
compartment.

Press u.
The player turns on (direct

power-on) and plays all the tracks
once.

Display

Playing timeTrack number

Tip

Next time you want to
listen to a CD, just press
u. The player turns on
automatically and starts
playing the CD.

Use these buttons for additional operations

OPERATE

ZPUSH
OPEN/CLOSE

VOL –, +

., >

u

x

To Press

adjust the volume VOL +, –
stop playback x
pause playback u

go to the next track >
go back to the previous track .
remove the CD ZPUSH OPEN/CLOSE
turn on/off the player OPERATE

Press the button again to
resume play after pause.

(or POWER, see page 2)

Basic Operations

GB

Basic Operations

4

Listening to the radio

Connect the supplied AC power cord (see page 26).

1

VOL

2

T

Press RADIO BAND until the
band you want appears in the

O

display (direct power-on).

I

D

D

A

N

R

A

B

Hold down TUNE TIME SET + or
– until the frequency digits begin
to change in the display.

The player automatically scans

T

E

S

E

M

I

T

E

N

U

the radio frequencies and stops
when it finds a clear station.

If you can't tune in a station,
press the button repeatedly to
change the frequency step by
step.

Basic Operations

GB

5

Use these buttons for additional operations

2

1

Display

Indicates an FM stereo
broadcast

Tips

• If the FM broadcast is
noisy, press PLAY
MODE •MONO/ST ISS
until “Mono” appears in
the display and the
radio will play in
monaural.

• Next time you want to
listen to the radio, just
press RADIO BAND.
The player turns on
automatically and starts
playing the previous
station.

OPERATE

VOL –, +

PLAY MODE
MONO/ST ISS

To Press

adjust the volume VOL +, –
turn on/off the radio OPERATE

To improve broadcast reception

Reorient the antenna for FM. Reorient the player itself
for MW/LW.

for FM

for MW/LW

Basic Operations

GB

6

Basic Operations

– 4 –

Basic Operations

GB

7

Playing a tape

Connect the supplied AC power cord (see page 26).

1

STOP/EJECT

Press xZ to open the tape
compartment and insert a
recorded tape. Use TYPE I
(normal) tape only. Close the
compartment.

Use these buttons for additional operations

12

With the side you want
to play facing you

Tip

Next time you want to
listen to a tape, just
press N. The player
turns on automatically
and starts playing the
tape.

To Press

adjust the volume VOL +, –
stop playback xZ
fast-forward or rewind the tape M or m
pause playback X

eject the cassette xZ
turn on/off the player OPERATE

OPERATE

VOL –, +

m, M

xZ

X

Press the button again to
resume play after pause.

Basic Operations

GB

8

2

Basic Operations

PLAY

Press N.
The player turns on (direct

power-on) and starts playing.

Recording on a tape

Connect the supplied AC power cord (see page 26).

GB

10

1

STOP/EJECT

2

OPR/BATT

OPERATE

VOL

Basic Operations

Press xZ to open the tape
compartment and insert a blank
tape. Use TYPE I (normal) tape
only.

Select the program source you
want to record.

To record from the CD player,
insert a CD (see page 4) and press
x on the CD section.

To record from the radio, tune in
the station you want (see page 6).

O

I

D

D

A

N

R

A

B

31

Display

With the side you want to
record on facing you

Display

3

REC

Tips

• Adjusting the volume or
the audio emphasis (see
page 28) will not affect
the recording level.

• If the MW/LW program
makes a whistling
sound after you've
pressed z in step 3,
press PLAY MODE•
MONO/ST ISS
(Interference Suppress
switch) repeatedly until
the noise is at a
minimum.

• For the best results, use
the AC power as a
power source.

• To erase a recording,
proceed as follows:

1 Insert the tape whose

recording you want to

erase.
2 Press X.
3 Press N.
4 Press z.
5 Press X.

Press z to start recording
(N is depressed automatically).

Use these buttons for additional operations

To Press

stop recording xZ
pause recording X

turn on/off the player OPERATE

Press the button again to
resume recording.

Basic Operations

OPERATE

PLAY MODE
MONO/ST ISS

xZ

X

N

Basic Operations

GB

9

Basic Operations

GB

11

– 5 –

The Timer

Setting the clock

“– –:– –” indication appears in the
display until you set the clock.

Tip

The time display
system:
24-hour system

CLOCK

DSPL
ENT MEM

TUNE
TIME SET –, +

Before you set the clock, connect the power source (see
page 26).

1

Press CLOCK for 2 seconds until the hour digit
flashes.

2

Press TUNE TIME SET + or – until you set the
current hour. Then press DSPL ENT MEM.

The minute digits flash. Set the minutes by
pressing TUNE TIME SET + or – until the correct
minute is displayed.

,

3

Press DSPL ENT MEM.
The clock starts from 00 seconds.

GB

The Timer

20

– 6 –

DISASSEMBLY

d

• This set can be disassembled in the order shown below.

SECTION 3

Set

Lower cabinet
section

Front cabinet
section

Tape mechanism
deck section

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

LOWER CABINET SECTION

2

three screws
(BTP3

×

12)

MAIN board

CD board

Cassette lid assy
and cassette holder

Head (HRP301), Motor assy (M301)
and belt

2

five screws
(BTP3

×

12)

Optical pick-up
section

CD lid
section

3

lower cabinet section

4

connector
(CNP310)

1

battery case li

4

two connectors
(CNP704, CNP308)

– 7 –

4

connector
(CNP307)

FRONT CABINET SECTION

2

two screws
(BTP3

×

12)

A

1

three connectors
(CNP302, 303, 309)

2

two screws
(BTP3

×

12)

3

Remove the front
cabinet section in
the arrow

A

direction.

MAIN BOARD

2

1

two connectors
(CNP304, 305)

two screws
(BVTP3

×

10)

1

three connectors
(CNP306, 311, 312)

rear cabinet
section

2

two screws
(BVTP3

×

10)

3

MAIN board

1

connector
(CNP1)

– 8 –

CD BOARD

3

connector
(CNP703)

1

two screws
(BVTP3

×

10)

2

CD board

1

two screws
(BVTP3

×

10)

3

connector
(CNP702)

OPTICAL PICK-UP SECTION

1

two screws
(PWH2.6

4

flat wire (16 core)
(CNP701)

×

10)

2

optical pick-up
section

1

two screws
(PWH2.6

×

10)

– 9 –

CD LID SECTION

)

2

damper

1

screws
(BVTP3

×

10)

6

CD lid section

4

Open the CD lid section

5

Remove the boss.

TAPE MECHANISM DECK SECTION

1

2

Open the cassette lid assy.

Push the button (ST/EJ).

3

spring (CD)

3

two screws
(BVTP3

4

tape mechanism deck section

3

two screws
(BVTP3

×

10)

×

10

– 10 –

CASSETTE LID ASSY AND CASSETTE HOLDER

)

)

7

8

boss

9

cassette lid assy and
cassette holder

spring
(cassette)

6

damper

8

boss

1

two screws
(BVTP3

3

4

speaker (R ch)

×

10)

two screws
(BVTP3

×

10

5

screw
(BVTP3

×

10)

HEAD (HRP301), MO TOR ASSY (M301) AND BELT

3

two screws

×

5)

(B2.6

1

connector
(CNP301)

2

bracket (SP)

4

motor assy (M301

2

head (HRP301)

– 11 –

5

belt

SECTION 4

r

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. 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

Mode Torque Meter Meter Reading

FWD CQ-102C

FWD
Back Tension (0.021 – 0.076 oz•inch)

FF CQ-201B

REW CQ-201B

CQ-102C

• T ape Tension Measurement

Mode Tension Meter Meter Reading

FWD CQ-403A

30 – 70 g•cm

(0.42 – 0.97 oz•inch)

1.5 – 5.5 g•cm

more than 60 g•cm

(more than 0.83 oz•inch)

more than 60 g•cm

(more than 0.83 oz•inch)

more than 100 g

(more than 3.53 oz)

PRECAUTION

Setting:

SOUND control : OFF
MEGA BASS control: OFF

TAPE DECK SECTION 0 dB=0.775 V

Test tape

Type Signal Used for

WS-48A 3 kHz, 0 dB Tape Speed Adjustment

Tape Speed Adjustment

Setting:

Function: TAPE

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

Procedure:

1. Playback WS-48A (tape center) in the FWD state.

2. Adjust the volume in CAPSTAN/REEL motor (M301) so that
the frequency counter reading becomes 3,000 Hz.

Specified V alue: 2,985 to 3,015 Hz

3. Confirm that the frequency at the beginning and that at the
end of tape winding are between 2,955 to 3,045 Hz.

MAIN board
CNP311 pin

set

frequency counte

4

3.2

Ω

MAIN board
CNP311 pin

+
–

3

Adjustment Location:

– TAPE deck block –

Tape speed
Adjustment

CAPSTAN/REEL motor
(M301)

– 12 –

TUNER SECTION 0 dB=1 µV

r

r

[MW/LW]

Setting:

Function : RADIO
BAND button : MW or LW

AM RF signal

generator

30% amplitude
modulation by
400 Hz signal
Output level: as low as possible

Put the lead-wire
antenna close to
the set.

set

MAIN board
CNP311 pin

3.2

Ω

MAIN board
CNP311 pin

4

level mete

+
–

3

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter

T1 450 kHz

MW VCO VOLTAGE CONFIRMATION

Frequency Display Reading on Digital Voltmeter

531 kHz 1.0 ± 0.3 V

1,611 kHz 5.0 ± 0.4 V

MW TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter

L3-1 621 kHz

CT2 1,404 kHz

[FM]

Setting:

Function : RADIO
BAND button: FM

FM RF signal

generator

0.01 µF

22.5 kHz frequency
deviation by 400 Hz
signal
Output level: as low as possible

MAIN board

TP (VT)

TP (GND)

MAIN board
TP (ANT)

set

MAIN board
TP (GND)

100 k

CNP311 pin

3.2

MAIN board
CNP311 pin

digital voltmete

Ω

4

level meter

Ω

+
–

3

MAIN board

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

• Remove FM antenna in FM adjustment.

LW VCO VOLTAGE ADJUSTMENT

Adjustment Part Frequency Display Reading on Digital Voltmeter

L4 153 kHz 0.6

Confirmation 279 kHz 4.7 ± 0.5 V

LW TRA CKING ADJUSTMENT

Adjust for a maximum reading on level meter

L3-2 162 kHz

CT3 261 kHz

FM VCO VOLTAGE ADJUSTMENT

Adjustment Part Frequency Display Reading on Digital Voltmeter

L2 108 MHz 4.0 ± 0.1 V

Confirmation 87.5 MHz 1.6 ± 0.2 V

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter

L1 87.5 MHz

CT1 108 MHz

+ 0.1 V
– 0.05 V

Adjustment Location: MAIN board (See page 14)

– 13 –

Adjustment Location:

– MAIN BOARD (Component Side) –

T1

AM IF Adjustment

FM T rac king
Adjustment

L1
CT1

L2

FM VCO Voltage

Adjustment

L4

LW VCO Voltage

Adjustment

L3-2
CT3

CT2
L3-1

LW Tracking
Adjustment

MW T rac king
Adjustment

– MAIN BOARD (Conductor Side) –

CNP311

14

TP (GND)

TP (VT)

TP (ANT)

– 14 –