Sony ICFCD-513 Service manual

ICF-CD513

SERVICE MANUAL

Ver 1.0 2000. 07

SPECIFICATIONS

US Model

Canadian Model

AEP Model

Model Name Using Similar Mechanism ICF-CD533
Optical Device Name KSL-213BGN
Optical Pick-UP Name KSS-213B

CD player section

System: Compact disc digital audio system
Laser diode properties: Material: GaAlAs

Wavelength: 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.)

Frequency response: 20-20 000 Hz
Wow and flutter: Below measurable limit

Radio section

Frequency range:

US, Canadian models

Band Frequency range Channel step

FM 87.5-108 MHz 0.1 MHz

AM 530-1 710 kHz 10 kHz

AEP model

Band Frequency range Channel step

FM 87.5-108 MHz 0.05 MHz
AM 531-1 602 kHz 9 kHz

FM 87.5-108 MHz 0.1 MHz
AM 530-1 610 kHz 10 kHz

+1

–1.5

dB

General

Time display:

US, Canadian models: 12-hour system
AEP model: 24-hour system

Speaker:

66 mm (

Power outputs:

1.2 W + 1.2 W
(at 10% harmonic distortion)

Power requirements:

US, Canadian models: 120 V AC, 60 Hz
AEP model: 220-230 V AC, 50 Hz

Dimensions:

Approx. 365 × 106 × 281 mm (w/h/d)

(Approx. 14
projecting parts and controls

Mass:

Approx. 2.9 kg (6 lb. 6 oz.)

Supplied accessories:

Mounting screws (4), Template (1),
Spacers (4), Cord clamp (1)

Design and specifications are subject to change
without notice.

2 5⁄

inches) dia., 4 Ω

8

3

1

⁄

× 4

8

⁄

× 11

4

1

⁄8 inches) incl.

FM/AM CD KITCHEN CLOCK RADIO

TABLE OF CONTENTS

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

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

3. DISASSEMBLY ......................................................... 6

4. TEST MODE.............................................................. 9

5. ELECTRICAL ADJUSTMENTS

Tuner Section .................................................................. 11

CD Section ...................................................................... 12

6. DIAGRAMS

6-1. Block Diagram – CD Section – ..................................... 15

6-2. Block Diagram – TUNER Section – ............................. 17

6-3. Block Diagram – MAIN Section –................................ 19

6-4. Printed W iring Boards..................................................... 23

6-5. Schematic Diagram

– MAIN (1/4)/KEY/LED Boards – ................................ 27

6-6. Schematic Diagram – MAIN Board (2/4) –.................. 29

6-7. Schematic Diagram

– MAIN (3/4)/LOADING/MOTOR Boards –................ 31

6-8. Schematic Diagram

– MAIN (4/4)/VOLUME/POWER Boards – ................. 33

6-9. IC Pin Function Description........................................... 40

SAFETY CHECK-OUT

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 A C leaka ge from an y e xposed metal part to earth gr ound and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers.).
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. Follo w the manufacturers’ instructions to use these
instruments.

2. A battery-operated A C 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 low­voltage scale. The Simpson 250 and Sanwa SH-63T rd are e x­amples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2 V A C range are suit­able. (See Fig. A)

To Exposed Metal
Parts on Set

7. EXPLODED VIEWS................................................ 42

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

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.

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.

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 MANU AL OR IN SUPPLEMENTS PUB­LISHED BY SONY.

1.5 k

0.15 µF

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

Ω

Earth Ground

AC
voltmeter
(0.75 V)

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 on the top exterior.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE 0
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM­POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

– 2 –

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 objecti ve lens.

HOW TO CHANGED THE CERAMIC FILTERS

This model is used two ceramic filters of CF1 and CF3.
You must used same type of color marked ceramic filters in order
to meet same specifications.
Therefore, the ceramic filter must changed two pieces together
since it’s supply two pieces in one package as a spare parts.

Mark Center frequency

CF3

mark

red 10.70 MHz

blue 10.67 MHz

DISC REMOVAL PROCEDURE (at POWER OFF)

1) Remove the cabinet (upper). (Refer to page 6 “CABINET (UP­PER)”)

2) Remove the “front assy, cabinet”. (Refer to page 6 “CABI­NET FRONT ASSY”)

3) Remove the CD mechanism deck. (Refer to page 7 “CD
MECHANISM DECK (KSL-213BGN”)

4) Turn the gear (C) in the direction of the arrow.

5) When the gear (P) reaches the position shown in the figure,
rotate it towards the arrow (A) position.

6) Pull out the disc table once it comes out a little.

3

A

2

1

gear (C)

gear (P)

orange 10.73 MHz

CF1

black 10.64 MHz

white 10.76 MHz

MODEL IDENTIFICATION – Top View –

 MODEL NO. ICF-CD513

US, Canadian models: AC: 120 V 60 Hz 15 W
AEP model: AC: 220 – 230 V 50 Hz 15 W

– 3 –

AC power cord
Cordon d’alimentation secteur

A

<

Mounting screw
Vis de fixation

Cord clamp
Attache de cordon

U

M

L

O

E

V

SECTION 2

GENERAL

Features

• Built-in CD player with Shuffle/Repeat
function.

• PLL (Phase Locked Loop) Synthesized Tuner
with 15 memory presets for easy one button
tuning.

• Powerful bass with MEGABASS sound system.

• Single alarm function - which can be used as
timer.

• Summer time (daylight saving time)
calculation.

Notes on AM channel step

The AM channel step differs depending on areas.
The channel step of this unit is factory-set to
10 kHz (US, Canadian models)/
9 kHz (AEP model).

Area Channel step

North and South
American countries

Other countries 9 kHz

10 kHz

This section is extracted from
instruction manual.

4

Press CLOCK once.

The minute will flash.

5

Repeat steps 3 and 4 to set the minute.

After setting the minute, press CLOCK to start
the counting of the seconds, and you will
hear two short beeps.

• To set the current time rapidly, hold down

TUNE/TRACK/TIME SET + or – .

• The clock system varies depending on the
model you own.
12-hour system: “AM 12:00” = midnight
24-hour system: “0:00” = midnight

• In step 5, when you press CLOCK after the
minute setting to activate the clock, the seconds
start counting from zero.

To change the display to the
daylight saving time (summer time)

Installing the Unit
Under a Cabinet

(See Fig. A)

The unit can be installed without the spacer.

1

Mark the position of the 4 holes by
using the supplied template. Use a drill
to make the holes (size 6.5 mm dia.,

9

/32 inch). (See Fig. A- )

2

When the cabinet door overhangs the
shelf and obstructs the unit, you can
adjust the unit/shelf height.
First set the L mark to the dot which
becomes the lowest position, then you
can adjust the height in 4 steps (H••L)
by turning the spacer counterclockwise.
(See Fig. A-

3

Install the unit with the supplied
mounting screws. (See Fig. A-

a

Template
Gabarit

c

<

Spacer/Pièce d’écartement

b

<

L (Low)
L(Bas)

Dot
Point

H

L

Caution

• Since the unit is very heavy, be careful when
installing the unit.

• To reduce the risk of fire, do not place any
heating or cooking appliance beneath this
unit.

• Install the unit so that its AC power cord can
be connected directly to a wall outlet. Do not
use a converter or extension cord.

• Be sure that the AC power cord has no slack
when using the unit, since the cord acts as an
FM wire antenna. If the AC power cord has
some slack, wind it up to the cord hook until
the cord has no slack.

• The unit has a built-in ferrite bar antenna for
AM radio reception. Check the condition of
AM reception before fixing in position.

• Install the unit as far as possible from a source
of noise. (for example, refrigerator, microwave
oven, fluorescent lamp, etc.)

)

)

indication

Press D.S.T./SUMMER T..

” is displayed and the time indication

“
changes to summer time.
To deactivate the summer time function, press

D.S.T./SUMMER T . again.

Changing
AM Channel Step

The AM channel step differs depending on areas.
The channel step of this unit is factory-set to
9 kHz or 10 kHz to match the frequency
allocation system of the country as listed.
You can change the channel step.

Area Channel step

North and South
American countries

Other countries 9 kHz 0.05 MHz

1

Press OFF to turn off the power.

2

While holding down OFF, keep
pressing PRESET 1 for more than 5
seconds. Two short beeps will sound,
and the AM channel step will be
changed.
If you proceed step 2 again, the channel
step changes again.

• When the AM channel step is changed, the
preset stations will be erased.

• When the AM channel step is changed, the FM
channel step is also changed.

AM FM

10 kHz 0.1 MHz

Playing a CD

An 8 cm (3-inch) CD can be played without an
adaptor.

1

Press Z OPEN/CLOSE and place a CD
on the disc tray.

Setting the Clock

1

Plug in the clock radio.

The display will flash “AM 12:00” or “0:00”.

2

Press CLOCK for a few seconds.

You will hear a beep and the hour will start
to flash in the display.

3

Press TUNE/TRACK/TIME SET + or –
until the correct hour appears in the
display.

– 4 –

2

Press Z OPEN/CLOSE to close the disc
tray.

3

Press CD u.

The player plays all the tracks once.

4

Adjust volume using VOLUME.

To Press

Pause CD u
Resume play after CD u again

pause
Locate the beginning .**

of the current
track (AMS*)

Locate the next >**
track (AMS)

Go back at high speed Hold down .**
Go forward at high Hold down >**

speed
Locate the previous . repeatedly**

track (AMS)
Locate the succeeding > repeatedly**

track (AMS)
Stop play x

* AMS = Automatic Music Sensor

** These operations are possible during both

play and pause.

• To handle compact discs

Correct

Handle the disc
by its edge.

Incorrect

Do not touch the
surface.

Do not stick paper
or tape nor write
anything on the
surface.

Note

If you press CD u when there is no disc in the
CD compartment, “00” flashes for about 5
seconds on the display and the unit turns off
automatically.

Various Modes of CD
Playback

You can play tracks repeatedly or in random
order.

Press CD PLAY MODE .
Each press changes the play mode as
follows:

Display Play

Indication mode

none (normal play)

All the tracks are played once.

m

“REP 1” (single repeat)

A single track is played repeatedly.

“REP ALL” (all repeat)

All the tracks are played repeatedly.

“SHUFFLE” (shuffle play)

All the tracks are played once
in random order.

“SHUFFLE REP” (shuffle repeat)

All the tracks are played repeatedly
in random order.

m

m

m

<

Operating the Radio

Manual T uning

1

Press RADIO ON•BAND to turn on the
radio.

“RADIO” appears in the display.
The display shows the band and frequency
for a few seconds and then changes back to
the current time.

2

Press RADIO ON•BAND repeatedly to
select the desired band.

Each press changes the band as follows:

* When using FM1 or FM2 preset mode, you

may listen to the radio on either mode
(See “Preset Tuning”).

Use TUNE/TRACK/TIME SET + or – to

3

tune in to the desired station.

The FM channel step is set to 0.1 MHz and
the AM channel step is set to 10 kHz (US,
Canadian models).
The FM channel step is set to 0.05 MHz* and
the AM channel step is set to 9 kHz (AEP
model).

* The FM frequency display is raised or

lowered by a step of 0.1 MHz. For example,
frequency 88.00 and 88.05 MHz is displayed
as “88.0 MHz.”

Two short beeps sound when the
minimum frequency of each band is
received during tuning.

4

Adjust volume using VOLUME.

• To turn off the radio, press OFF.

• To improve radio reception

FM: Extend the AC power cord fully to

improve FM reception.

AM: When installing the unit, rotate the unit

horizontally for optimum reception and
then install the unit. A ferrite bar antenna
is built into the unit.

• To check the station being received, press

RADIO ON•BAND lightly. The display shows
the band and frequency for a few seconds and
then changes back to the current time.

Preset Tuning

You can preset 10 stations in FM (5 stations in
FM1, 5 stations in FM2) and 5 stations in AM.

Presetting a Station

Example: To preset FM90 MHz onto preset

button 2 for FM2.

1

Press RADIO ON•BAND to turn on the
radio.

2

Press RADIO ON•BAND to select FM2.

3

Tune in to the station on FM90 MHz
(See “Manual Tuning”).

4

Hold down the PRESET TUNING
button 2 until you hear two short
beeps.

The display shows the frequency for a few
seconds and then changes back to the current
time.

To change a preset station

Tune in manually to the station you want to store
and hold down the PRESET TUNING button (1-5)
until you hear two short beeps. The previously
stored station will be replaced by the new one.

Tuning in to a preset station

1

Press

RADIO ON•BAND

radio.

RADIO ON•BAND

2

Press
band.

3

Press the PRESET TUNING button
lightly where the desired station is stored.

4

Adjust the volume using VOLUME.

After a few seconds, the display returns to
the current time but the preset button
number remains.

Note

When the PRESET TUNING buttons (1-5) are
pressed lightly, the radio station that is preset
will be selected. When they are pressed for a
while, the station that is on will be newly preset.

to turn on the

to select the

Useful Functions

To Obtain Powerful Bass

Switch MEGA BASS to ON
The “MEGA BASS” system produces a powerful
bass sound.

.

Setting the Alarm

Before setting the alarm, make sure to set the
clock (see “Setting the Clock”).

To Set the Alarm Time

1

Turn off the radio.

2

Press ALARM for a few seconds.

You will hear a beep and the hour will start
to flash in the display.

3

Press TUNE/TRACK/TIME SET + or –
until the desired time appears in the
display.

4

Press ALARM once.

The minutes starts to flash.

5

Repeat steps 3 and 4 to set the minute.

Two short beeps will confirm the setting, and
the display will show the current time.

When TUNE/TRACK/TIME SET + or – is held
down, the displayed time initially changes in
one-minute steps, and after about a second,
switches to ten-minute steps.

To Check the Alarm
Time

Press ALARM.

The display shows the alarm time for a few
seconds and then returns to show the current
time.

ALARM ON —

To Set the Alarm Mode

Press ALARM ON/OFF to set the alarm.

” will appear in the display.

“

When the alarm comes on at the preset time,

” flashes in the display.

“

ALARM OFF —

The alarm is turned off automatically after
59 minutes.

To Stop the Alarm

Press OFF•ALARM RESET to turn off the
alarm.

The alarm will come on again at the same time
the next day.

To Cancel the Alarm

Press ALARM ON/OFF.

” will disappear from the display.

“

– 5 –

)

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

SET

CABINET (UPPER)

CABINET FRONT ASSY

SECTION 3

DISASSEMBLY

CD MECHANISM DECK
(KSL-213BGN)

MAIN BOARD

MOTOR BOARD,
LOADING MOTOR BOARD

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

OPTICAL
PICK-UP SECTION

CABINET (UPPER)

5

seven screws

×

10)

(BTP3

6

screw
(B2.6

3

lid (CD)

5

eight screws

×

10)

(BTP3

×

5)

7

cabinet (upper

2

two claws

1

table, disc

Note1: “table, disc” getting out procedure on the power supply is ON,

then push button (open).

Note2: When can not getting out “table, disc”,

refer to “SERVICEING NOTES” on page 3.

CABINET FRONT ASSY

2

four screws

×

10)

(BTP3

3

claw

4

knob (VOL)

3

two claws

4

front assy, cabinet

– 6 –

3

two claws

1

connector

(CN401)

CD MECHANISM DECK (KSL-213BGN)

7

CD mechanism deck
(KSL-213BGN)

6

chassis

5

four screws

×

10)

(BTP3

2

3

connector
(CN701)

4

wire (flat type)
(16core)

boss

NOTE: On installation of CD mechanism deck,

cut the boss.

1

MAIN BOARD

connector
(CN503)

1

2

six screws

×

10)

(BTP3

connector (CN304)

1

connector
(KH901)

1

connector (CN301)

4

MAIN board

1

connector
(CN303)

3

claw

– 7 –

MOTOR BOARD, LOADING MOTOR BOARD

1

Remove two solders.

2

LOADING MOTOR board

1

Remove two solders.

3

MOTOR board

1

Remove two solders.

OPTICAL PICK-UP SECTION

3

holder (MG) assy

disc table

6

4

5

screw (BV3 × 8)

2

two claws

1

2

two claws

two screws

×

(BVTT3

6)

7

four screws
(2.6

×

16)

8

optical pick-up section

(KSM-213BGN)

9

chassis assy

– 8 –

SECTION 4

F-E balance
adjusted value

Tracking gain
adjusted value

Focus bias
adjusted value

TEST MODE

4-1. LCD TEST MODE

[Setting the Test Mode]

• Turn the power on while pressing u , + > and [ALARM

ON/OFF] buttons simultaneously.

[Operation of Test Mode]

1. When LCD test mode becomes active, the microcomputer ver ­sion number is displayed on the LCD.

2. Press the Z button, and all segments of LCD will turn on.

LCD display

RADIO

CD

FM1
FM2
AM
PM

3. Press each button, and the corresponding segment will turn
off. Relation between buttons and corresponding segments is
as follows.

Name of Buttons Segment (Display)

Z TRACK

u CD N

[BAND] RADIO, FM1, FM2,.(POINT)

[OFF]

– .
+ >

[CD PLAY MODE] REP 1, ALL, SHUFFLE

[CLOCK] AM, PM, :(COLON)

[D.S.T.]

[1]
[2]
[3]
[4]
[5]

[ALARM]

[ALARM ON/OFF]

Note: The buttons may be pressed in random order.

4. Finally, press the [ALARM ON/OFF] button to release from
the LCD test mode. However, the LCD test mode does not
release if even one button has not been pressed yet whatever
you pressed the [ALARM ON/OFF] button.

SHUFFL

REP 1 ALL

TRACK

,

4-2. CD TEST-1 (AUTO) MODE

[Setting the Test Mode]

• Short the solder bridge of BP404 on the MAIN board (connect
IC401 tl pin and ground) and turn the power on. (See page 10)

[Operation of Test Mode]

1. When the CD test-1 mode becomes active, the disc table opens.

2. Insert the CD test disc YEDS-18. (Parts No. 3-702-101-01)

3. Press the u button, and the focus search will repeat until

the focus is OK.

4. When the focus is OK, auto adjustment is executed and at the

completion, the rough servo function turns on and the adjusted
value is displayed on the LCD.

LCD display

5. The optical pick-up will move inward if the – . button is

pressed, or outward if the + > button is pressed.

6. Press the [BAND] button, and the spindle/tracking servo will

turn on, and if the data are read in, the mute turns off.

7. With the spindle/tracking servo turned on, pressing respecti v e

buttons causes the operation to be performed as follows.

Name of Buttons Operation

[1] 1 track jump setting
[2] 10 track jump setting
[3] 100 track jump setting
[4] Tracking gain up
[5] Returns to auto adjustment mode

[BAND] Rough servo function turns on

8. After setting, press the – . or + > button to start the

track jump.

9. When the CD test-1 mode becomes active, press the Z button

and the disc table will open.

10. With the rough serv o or spindle/tracking servo turned on, press

the [OFF] b utton and the CD will stop, and then press the u
button and the operation will repeat, starting from focus search.

11. With the rough serv o or spindle/tracking servo turned on, press

the u button and the optical pick-up will jump to the second
music and the set will release from the CD test-1 mode.

– 9 –

C

4

0

3

2

2

4-3. CD TEST-2 (MANUAL) MODE

[Setting the Test Mode]

• Short the solder bridge of BP403 on the MAIN board (connect
IC401 tk pin and ground) and turn the power on.

[Operation of Test Mode]

1. Insert the CD test disc YEDS-18. (Parts No. 3-702-101-01)

2. Press the u button, and the focus search will repeat until

the focus is OK.

3. When the focus is OK, the rough servo function turns on.

4. Press the [BAND] button, and the spindle/tracking servo will

turn on, and if the data are read in, the mute turns off. Press the

[BAND] button again, and the rough servo will turn on.

5. With the rough servo or spindle/tracking servo turned on the

optical pick-up will move inward if the – . button is
pressed, or outward if the + > button is pressed.

6. With the rough servo or spindle/tracking servo turned on, press

the [OFF] b utton and the CD will stop, and then press the u
button and the operation will repeat, starting from focus search.

7. With the rough servo or spindle/tracking servo turned on, press

the u button and the optical pick-up will jump to the second
music and the set will release from the CD test-2 mode.

Connecting Points

– MAIN BOARD (Conductor Side) –

R43

C414

C41

R43

JC40

40

1

C449

R484

C426

C427

C428

C435

Q302

ECB

R307

C434

C433

C436

BP403
Short: CD Test-2 Mode

()

Open: Normal Mode

C422

C421

C419

R452

R457

R451

441

R450

C439

60

61

C444

C418

R449

C407

+

R454

R453

R455

R456

BP403

(CD TEST MANUAL)

R458

R459

R460

BP404

R462

(CD TEST AUTO)

R463

R464

R465

X401

67

BP404
Short: CD Test-1 Mode

(

Open: Normal Mode

R439

R441

(US, Canadian)

41

IC401

80

)

– 10 –

SECTION 5

)

FM RF SSG

Carrier frequency: 98 MHz
Modulation: 400 Hz, 30% FM modulation
Output level: 0.1 V (100 dB)

MAIN board
TP (FM IN)

0.01 µF
set

TP (FEG GND)

1 µF

TP (ST VCO)

+

–

frequency counter

33 k

Ω

TP (TU - +B)

+

MAIN board

ELECTRICAL ADJUSTMENTS

TUNER SECTION 0 dB=1 µV

[AM]

Setting:

Function : RADIO
Band switch: AM

AM RF signal

generator

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

[FM]

Setting:

Function : RADIO
Band switch: FM

FM RF signal

generator

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

• Attention
BP1 Desoldering
(Must be short after measurement)

Put the lead-wire
antenna close to
the set.

set

MAIN board

0.01 µF

TP (FM IN)

set

TP (FEG GND)

level meter

4

Ω

+
–

MAIN board
speaker terminal (CN301)

level meter

4

Ω

+

–

MAIN board
speaker terminal (CN301

no mark : US, Canadian models
< > : AEP model

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter

T1 450 kHz

AM FREQUENCY COVERAGE ADJUSTMENT

Adjustment Part Frequency Display Reading on Digital Voltmeter

L4

Confirmation

Adjust for a maximum reading on level meter

CT2 1,490 kHz <1,404 kHz>

FM FREQUENCY COVERAGE ADJUSTMENT

Adjustment Part Frequency Display Reading on Digital Voltmeter

L2 87.5 MHz 2.6 ± 0.05 V

Confirmation 108 MHz 8.8 ± 1.0 V

Adjust for a maximum reading on level meter

CT1 108 MHz

530 kHz

<531 kHz>

1,710 kHz 8.8 ± 1.0 V

<1,602 kHz> <8.3 ± 1.0 V>

AM TRACKING ADJUSTMENT

L3 580 kHz <621 kHz>

FM TRACKING ADJUSTMENT

L1 87.5 MHz

2.65 ± 0.05 V

Adjustment Location: MAIN board (See page 13)

digital voltmeter

100 k

MAIN board

TP (VT)

Ω

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

FM VCO Adjustment

Setting:

Procedure:

1. Connect the frequency counter to TP(ST VCO), TP(TU - +B)
on the MAIN board, as shown the figure below.

2. Tune the set to 98 MHz.

3. Adjust RV1 on the MAIN board for 76 kHz reading on the
frequency counter.

Specified Value: 75.95 to 76.05 kHz

Adjustment Location: MAIN board (See page 13)

– 11 –

CD SECTION

e

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

Focus Bias Check

Connection:

oscilloscop

(AC range)

MAIN board

TP513 (RF)

TP568 (GND)

Procedure:

1. Connect the oscilloscope to TP513 (RF) and TP568 (GND) on
the MAIN board.

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

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

+

–

1.2

±

0.2 Vp-p

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

Connecting Points: MAIN Board (See page 13)

– 12 –