Sony CFD-E77L Service manual

CFD-E77L

SERVICE MANUAL

Ver 1.0 2002.02

CD
Section

TAPE
Section

AEP Model

UK Model

Model Name Using Similar Mechanism CFD-E75L
CD Mechanism Type KSM-213CDP
Optical Pick-up Name KSS-213C
Model Name Using Similar Mechanism CFD-E75L
T ape Transport Mechanism Type MF-V5-117

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/–1 dB

Wow and flutter

Below measurable limit

Radio section

Frequency range

FM 87.5 - 108 MHz
MW 531 - 1 602 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

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
4 Ω, cone type (2)

Outputs

Headphones jack (stereo minijack)
For 16 - 64 Ω impedance headphones

Maximum power output

4 W

Power requirements

For CD radio cassette-corder:
230 V AC, 50 Hz
9 V DC, 6 R14 (size C) batteries
For memory back-up:

4.5 V DC, 3 R6 (size AA) batteries
For remote control:
3 V DC, 2 R6 (size AA) batteries

Power consumption

AC 14 W

1

⁄4 in.) dia.,

Battery life

For CD radio cassette-corder:

FM recording

Sony R14P: approx. 5 h
Sony alkaline LR14: approx. 20.5 h

Tape playback

Sony R14P: approx. 6 h
Sony alkaline LR14: approx. 27 h

CD playback

Sony R14P: approx. 1.5 h
Sony alkaline LR14: approx. 8 h

Dimensions

Approx. 283 × 165 × 281 mm (w/h/d)

1

⁄4 × 6 1⁄2 × 11 1⁄8 inches) (incl. projecting parts)

(11

Mass

Approx. 3.5 kg (7 lb. 11 oz) (incl. batteries)

Supplied accessories

Mains lead (1)
Remote control (1)

Design and specifications are subject to change without
notice.

9-873-575-01 Sony Corporation

2002B0500-1 Personal Audio Company
C 2002.02 Published by Sony Engineering Corporation

CD RADIO CASSETTE-CORDER

CFD-E77L

TABLE OF CONTENTS

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

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

3. DISASSEMBLY

3-1. Disassembly Flow ........................................................... 7

3-2. Cabinet Lower Assy........................................................ 8

3-3. AC INLET Board, Power Board..................................... 8

3-4. TUNER Board, MAIN Board ......................................... 9

3-5. Cover Plate Assy ............................................................. 9

3-6. CD Mechanism Deck (KSM-213CDP) .......................... 10

3-7. Optical Pick-up (KSS-213C) .......................................... 10

3-8. Cabinet Front Assy.......................................................... 11

3-9. Tape Mechanism Deck (MF-V5-117) ............................ 11

3-10. CD Lid............................................................................. 12

3-11. Lid Cassette Assy, LCD Board ....................................... 12

3-12. Head (HRP301), Motor Assy (M301), Belt ................... 13

3-13. Connector Setting............................................................ 13

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

5. ELECTRICAL ADJUSTMENTS

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

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

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

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.

CAUTION

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

This Compact Disc player is classified as a
CLASS 1 LASER product.

The CLASS 1 LASER PRODUCT label is located
at the rear.

6. DIAGRAMS

6-1. Block Diagram – CD Section – .................................... 19

6-2 Block Diagram – TUNER Section – ............................ 20

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

6-4. Block Diagram – POWER SUPPLY Section – ............ 22

6-5. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 23

6-6. Printed Wiring Board – CD Section – .......................... 24

6-7. Schematic Diagram – CD Section – ............................. 25

6-8. Printed Wiring Board – TUNER Section – .................. 26

6-9. Schematic Diagram – TUNER Section – ..................... 27

6-10. Printed Wiring Board – TAPE DECK Section – .......... 28

6-11. Schematic Diag ram – TAPE DECK Section –............. 28

6-12. Printed Wiring Boards – MAIN/LCD Boards –........... 29

6-13. Schematic Diagram – MAIN Board (1/2) – ................. 30

6-14. Schematic Diagram – MAIN (2/2)/LCD Boards – ...... 31

6-15. Printed Wiring Boards – PANEL Section – ................. 32

6-16. Schematic Diag ram – PANEL Section –...................... 33

6-17. Printed Wiring Boards

– POWER SUPPLY Section – ....................................... 34

6-18. Schematic Diagram

– POWER SUPPLY Section – ....................................... 35

6-19. IC Pin Function Description .......................................... 39

7. EXPLODED VIEWS

7-1. Cabinet Section ............................................................... 41

7-2. Cabinet Upper Section .................................................... 42

7-3. Cabinet Front Section ..................................................... 43

7-4. Cabinet Lower Section.................................................... 44

7-5. Optical Pick-up Section (KSM-213CDP) ...................... 45

7-6. Tape Mechanism Deck Section-1 (MF-V5-117)............ 46

7-7. Tape Mechanism Deck Section-2 (MF-V5-117)............ 47

8. ELECTRICAL PARTS LIST .............................. 48

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 MANUAL OR IN SUPPLEMENTS PUB­LISHED BY SONY.

2

SECTION 1

SERVICING NOTES

CFD-E77L

About CD-Rs/CD-RWs

This player is compatible with CD-Rs/CD-RWs but
playback capability may vary depending on the quality of
the disc, the recording device and application software.

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 objecti ve lens.

LASER DIODE AND FOCUS SEARCH OPERATION
CHECK

During normal operation of the equipment, emission of the laser
diode is prohibited unless the upper lid is closed while turning ON
the S901. (push switch type)
The following checking method for the laser diode is operable.

• Method
Emission of the laser diode is visually checked.

1. Open the upper lid.

2. Push the S901 as shown in Fig.1.

Note: Do not push the detection lever strongly, or it may be bent or dam-

aged.

3. Press the u (CD) button.

4. Chec k the object lens for confirming normal emission of the

laser diode. If not emitting, there is a trouble in the automatic
power control circuit or the optical pick-up.
In this operation, the object lens will move up and down 2
times along with inward motion 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

S901

Fig.1 Method to push the S901

3

CFD-E77L

Basic Operations

5

GB

Use these buttons for additional operations

OPERATE

x

u

Jog dial

VOLUME +, –

ZPUSH
OPEN/CLOSE

To Do this

adjust the volume Press VOLUME +, – (VOL +, – on

the remote).
stop playback Press x.
pause playback Press u (X on the remote).

Press the button again to resume

play after pause.
go to the next track Turn the jog dial clockwise.

(On the remote, press >.)
go back to the previous track Turn the jog dial counterclockwise.

(On the remote, press ..)
remove the CD Press ZPUSH OPEN/CLOSE.
turn on/off the player Press OPERATE.

Basic Operations

7

GB

Use these buttons for additional operations

To Press

adjust the volume VOLUME +, –

(VOL +, – on the remote)

turn on/off the radio OPERATE

To improve broadcast reception

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

for FM for MW/LW

Tips

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

• If you need to change the
MW tuning interval,
see page 25.

OPERATE

VOLUME +, –

MODE

Basic Operations

Playing a CD

1

PUSH OPEN/CLOSE

2

1, 2

3

Connect the supplied mains lead (see page 24).

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.

SECTION 2

GENERAL

This section is extracted from
instruction manual.

PUSH OPEN/CLOSE

3

GB

4

Listening to the radio

1

RADIO
BAND

AUTO PRESET

2

T

U

NE

Press u (N on the remote).
The player turns on (direct power-on)

and plays all the tracks once.

Display

12

Connect the supplied mains lead (see page 24).

Press RADIO BAND•AUTO
PRESET until the band you want
appears in the display (direct power­on).

Each time you press the button, the
band changes as follows:

“FM” t “MW” t “LW”

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

The player automatically scans 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.

Display

Indicates an FM stereo
broadcast

Playing timeTrack number

GB

6

4

CFD-E77L

Playing a tape

21

Connect the supplied mains lead (see page 24).

1 Press xZ to open the tape

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

2 Press n.

The player turns on (direct power-on)
and starts playing.

With the side you want
to play facing you

Display

Use these buttons for additional operations

OPERATE

VOLUME +, –

m, M

xZ

X

To Press

adjust the volume VOLUME +, –

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

(VOL +, – on the remote)

Press the button again to
resume play after pause.

Basic Operations

GB

8

Recording on a tape

1

Connect the supplied mains lead (see page 24).

1 Press xZ to open the tape

2 Select the programme source you

RADIO

BAND

AUTO PRESET

GB

10

compartment and insert a blank tape.
Use TYPE I (normal) tape only.

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).

3

With the side you want to
record on facing you

Display

3

Tips

• Adjusting the volume or the
audio emphasis (see page

18) will not affect the
recording level.

• If the MW/LW
programme makes a
whistling sound after you've
pressed z in step 3, press
MODE to select the
position of ISS
(Interference Suppress
Switch) that most decreases
the noise.

• 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.

OPERATE

MODE

n

xZ

X

GB

9

Basic Operations

GB

11

5

CFD-E77L

The Timer

Setting the clock

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

MENU
ALARM

Before you set the clock, connect the power
source (see page 24).

1

Press MENU•ALARM until “CLOCK”
appears in the display, then press
DSPL•ENT MEM.
The hour digit flashes.

DSPL
ENT MEMJog dial

3

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

Tip

The time display system: 24-hour system

The Timer

2

Turn the jog dial to set the current hour.
Then press DSPL•ENT MEM.
The minute digits flash. Set the minutes
by turning the jog dial until the correct
minute is displayed.

19

GB

6

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

3-1. DISASSEMBLY FLOW

SET

CFD-E77L

SECTION 3

DISASSEMBLY

3-2. CABINET
LOWER ASSY

(page 8)

3-8. CABINET

FRONT ASSY
(page 11)

3-9. TAPE MECHANISM DECK

(MF-V5-117)
(page 11)

3-11.LID CASSETTE ASSY,

LCD BOARD
(page 12)

3-3. AC INLET BOARD,

POWER BOARD
(page 8)

3-12.HEAD (HRP301),

MOTOR ASSY (M301),
BELT
(page 13)

3-13.CONNECTOR SETTING

(page 13)

3-4. TUNER BOARD,

MAIN BOARD
(page 9)

3-5. COVER

PLATE ASSY
(page 9)

3-6. CD MECHANISM DECK

(KSM-213CDP)
(page 10)

3-7. OPTICAL PICK-UP

(KSS-213C)
(page 10)

3-10.CD LID

(page 12)

7

CFD-E77L

r

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

3-2. CABINET LOWER ASSY

4

screw
(BVTP3

×

14)

7

connector
(CNP392)

3

5

4

two screws
(BVTP3

×

14)

6

connector
(CN322)

2

four screws

×

(BVTP3

10)

3-3. AC INLET BOARD, POWER BOARD

5

two screws
(BVTP3

6

plate shield (TRANS)

×

10)

3

AC INLET board

4

connector
(CNP901)

1

two screws
(BVTP3

8

cabinet lower assy

×

14)

2

two screws
(BVTP3

×

10)

1

connecto
(CN902)

7

POWER board

8

y

3-4. TUNER BOARD, MAIN BOARD

2

four screws
(BVTP3

×

10)

qa

four screws
(BVTP3

×

10)

4

two screws
(BVTP3

×

10)

3

TUNER board

1

connector
(CNP1)

6

connector

(CNP321)

7

connector
(CNP802)

8

FFC cable 27P
(CNP801)

9

wire (flat type) (14 core)
(CNP323)

0

FFC cable 13P
(CNP322)

5

cover, speaker

qs

MAIN board

CFD-E77L

3-5. COVER PLATE ASSY

2

connector
(CNP802)

6

screw
(BVTP3

3

FFC cable 27P
(CNP801)

6

screw
(BVTP3

×

10)

×

10)

4

wire (flat type) (14 core)
(CNP323)

5

1

connector
(CNP321)

FFC cable 13P
(CNP322)

6

two screws
(BVTP3

7

cover plate ass

×

10)

9

CFD-E77L

k

3-6. CD MECHANISM DECK

(KSM-213CDP)

1

four screws
(2.6

×

10)

2

CD mechanism dec
(KSM-213CDP)

3-7. OPTICAL PICK-UP

(KSS-213C)

2

two claws

9

optical pick-up

(KSS-213C)

4

7

5

claw

3

1

two claws

gear (A)

cover, CD

6

claw

sled shaft

8

10

3-8. CABINET FRONT ASSY

)

4

Push the knob (stop/eject).

CFD-E77L

8

cabinet front assy

7

two screws
(BVTP3 × 10)

6

screw
(BTP2.6 × 8)

5

1

FFC cable 27P
(CNP801)

2

wire (flat type) (14 core
(CNP323)

3

connector
(CNP321)

3-9. TAPE MECHANISM DECK

(MF-V5-117)

2

tape mechanism deck (MF-V5-117)

1

four screws
(BVTP3 × 10)

11

CFD-E77L

)

3-10. CD LID

2

damper

1

screw
(BTP2.6

CD lid

driver

4

CD lid

×

8)

3

boss

3-11. LID CASSETTE ASSY, LCD BOARD

4

LCD board

3

lid cassette assy

2

two claws

1

two screws
(BTP2.6

×

8

12

3-12. HEAD (HRP301), MOTOR ASSY (M301), BELT

6

two screws
(B2.6

×

5)

7

motor assy (M301)

8

belt

5

head (HRP301)

1

screw
(BVTT2

×

6)

3

Remove
four solders.

4

TC board

2

CFD-E77L

3-13. CONNECTOR SETTING

Note: When connecting leads, set it as shown in the figure.

CN303

CNP802

MAIN board

TC board

CNP801

CN321

CNP322

CN322

CNP321

TUNER board

CNP1

13

CFD-E77L

r

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 unless otherwise noted.

• Torque Measurement

Mode Torque Meter Meter Reading

FWD CQ-102C (30 – 70 g•cm)

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)

• T ape Tension Measurement

Mode Tension Meter Meter Reading

FWD CQ-403A

2.95 – 6.86 mN•m

(0.42 – 0.97 oz•inch)

0.15 – 5.39 mN•m

(0.021 – 0.076 oz•inch)

more than 5.89 mN•m

(more than 0.83 oz•inch)

more than 5.89 mN•m

(more than 0.83 oz•inch)

more than 100 g

(more than 3.53 oz)

PRECAUTION

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

Specified Value: 2,930 to 3,030 Hz

3. Confirm that the frequency at the beginning and that at the
end of tape winding are between 2,940 to 3,060 Hz.

POWER board
CNP392 pin

set

1

frequency counte

3.2

Ω

POWER board
CNP392 pin

+
–

2

Adjustment Location:

– TAPE deck block –

Tape speed
Adjustment

CAPSTAN/REEL motor
(M301)

14

CFD-E77L

r

p

r

TUNER SECTION 0 dB=1 µV

[MW/LW]

Setting:

Function : RADIO
RADIO BAND button : MW or LW

AM RF signal

generator

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

[FM]

Setting:

Function : RADIO
RADIO BAND button: FM

FM RF signal

generator

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

Put the lead-wire
antenna close to
the set.

0.01 µF

ossible

TUNER board

TP (VT)

TP (GND)

set

TUNER board
TP (ANT)

set

TUNER board
TP (GND)

digital voltmete

100 kΩ

POWER board
CNP392 pin 1

level mete

3.2 Ω

+
–

POWER board
CNP392 pin 2

POWER board
CNP392 pin 1

level meter

3.2 Ω

POWER board
CNP392 pin 2

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter

T1 450 kHz

MW VCO VOLTA GE ADJUSTMENT

Frequency Display Reading on Digital Voltmeter

531 kHz 0.9 ± 0.5 V

1,611 kHz 5.2 ± 0.6 V

MW TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter
L3-1 621 kHz
CT3 1,404 kHz

LW VCO V OLT AGE ADJUSTMENT

Adjustment Part Frequency Display Reading on Digital Voltmeter

L4 153 kHz 0.6 ± 0.3 V

Confirmation 279 kHz 5.0 ± 0.15 V

LW TRA CKING ADJUSTMENT

Adjust for a maximum reading on level meter
L3-2 162 kHz
CT5 261 kHz

FM IF ADJUSTMENT

+

–

Adjustment Part Frequency Display Reading on Digital Voltmeter

Confirmation 87.5 MHz 1.3 ± 0.4 V

Adjust for a minimum reading on level meter

T2 10.7 MHz

FM VCO VOLT A GE ADJUSTMENT

L2 108 MHz 3.0 ± 0.3 V

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter

L1 87.5 MHz

CT1 108 MHz

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

Adjustment Location: TUNER and POWER board (See page 16)

pacitors.

• Remove FM antenna in FM adjustment.

15

CFD-E77L

Adjustment Location:

– TUNER BOARD (Component Side) –

L2

L4

L3-1

MW T rac king Adjustment

CT3

LW VCO Voltage Adjustment

FM VCO Voltage Adjustment

– TUNER BOARD (Conductor Side) –

TP

(VT)

TP

(GND)

L1
CT1

CT5

LW Tracking Adjustment

L3-2

TP

(ANT)

T2 FM IF Adjustment

T1 AM IF Adjustment

FM T rac king Adjustment

– POWER BOARD (Conductor Side) –

14

CNP392

16

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 to TP (RF) and TP (GND) on the CD

board.

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

3. Press the [ ] (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)

u

VOLT/DIV: 0.2 V (with the 10: 1 probe in use.)
TIME/DIV: 500 ns

0.85 ± 0.2 Vp-p

CFD-E77L

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

Adjustment Location:

– CD BOARD (Conductor Side) –

IC701

TP (GND)

TP

(RF)

17