DOWNLOAD Sony ICF-CD2000 / ICF-CD2000S Service Manual ↓ Size: 3.05 MB | Pages: 47 in PDF or view online for FREE

– 13 –

1. Connect TP446 (TUNER TEST) to the TP444 (GND).
2. Insert external power supply.

1. All segments of LCD light up if the LCD display check mode

is activated.

2. If each key is pressed, the LCD display is as shown below. At

the same time, for some keys, the following operation is per-
formed.

[CLOCK]

:

[ESP]

:

Beep sound ON

[CD PLAY MODE]

:

Beep sound OFF

[WORLD/LOCAL]

:

[D.S.T SUMMER T.]

:

[ALARM MODE]

:

Buzzer sound ON

WORLD

TIMEDIF

AM

BUZZER

ESP

INTROSCAN

REPEAT   ALL

SHUFFL
REPEAT1 

LOCAL

PM

PRESET

SW

PM

RADIO

[ALARM TIME]

:

Buzzer sound OFF

[SNOOZE]

:

LED ON

[ALARM TRACK/STATION]

:

LED OFF

[      ]

:

[      ]

:

[BAND]

:

[PRESET 1]

:

[PRESET 2]

:

CD

A M

CD

E

N

FM 2

M W

WAKEUP

SLEEP

AM

>

.

MHz

kHz

FM1

– 14 –

[PRESET 3]

:

[PRESET 4]

:

[PRESET 5]

:

[    OFF, ALARM RESET]

: All lit

1. Remove external power supply.
2. Disconnect TP446 (TUNER TEST) and TP444 (GND).

x

TP448

(CD TEST 3)

TP449
(GND)

TP444
(GND)

TP445

(CD TEST 1)

TP446

(TUNER TEST)

TP447

(CD TEST 2)

– 15 –

AM (MW)  FREQUENCY  COVERAGE  ADJUSTMENT

Adjustment Part

Frequency Display

Reading on Digital Voltmeter

L13

530 (531) kHz

1.7 V

Confirmation

1,710 (1,602) kHz

8.5 V (9.0 V)

no mark: US, CND    (    ) : AEP, UK, E, SP, JE

AM (MW)  TRACKING  ADJUSTMENT

Adjust for a maximum reading on level meter

L7

580 kHz (621 kHz) <621 kHz>

CT2

1,490 kHz (1,404 kHz) <1,485kHz>

no mark: US, CND    (    ) : AEP, UK    <    > : E, SP, JE

FM  FREQUENCY  COVERAGE  ADJUSTMENT

Adjustment Part

Frequency Display

Reading on Digital Voltmeter

Confirmation

87.5 MHz <76.0 MHz>

2.3 V <1.5 V>

Confirmation

108 MHz <108.0 MHz>

11 V <8.8 V>

no mark: US, CND, AEP, UK    <    > : E, SP, JE

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter

L14

87.5 MHz

CT2

108.0 MHz

SW  FREQUENCY  COVERAGE  ADJUSTMENT

Adjustment Part

Frequency Display

Reading on Digital Voltmeter

L12

5.8 MHz

1.75 ± 0.1 V

Confirmation

15.6 MHz

8.5 V ± 1 V

ICF-CD2000S

SW  TRACKING  ADJUSTMENT

Adjust for a maximum reading on level meter

L8

5.8 MHz

CT1

15.6 MHz

ICF-CD2000S

Adjustment Location: MAIN board (See page 16)

Procedure:
1. Connect the IF swimmer scope as shown below.
2. Set the BAND switch to AM position.
3. Adjust the T1 so that the frequency of IF swimmer scope is

450 kHz and the waveform is symmetric in relation to the maxi-
mum value.

Adjustment Location: MAIN board (See page 16)

0 dB=1 µV

Setting:
Band switch : AM (MW)

Setting:
Band switch : FM

Setting:
Band switch : SW

• Repeat the procedures in each tracking adjustment several times,

and the frequency coverage and tracking adjustments should be
finally done by the trimmer capacitors.

AM RF SSG

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

Put the lead-wire
antenna close to 
the set.

+
–

level meter

set

32 

Ω

i

 (headphone) jack (J301)

FM RF SSG

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

+
–

level meter

i

 (headphone) jack (J301)

set

32 

Ω

0.01 

µ

F

MAIN board
FM/SW Telescopic
Antenna (ANT1)

digital voltmeter

MAIN board

TP (VT)

+
–

AM RF SSG

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

+
–

level meter

i

 (headphone) jack (J301)

set

32 

Ω

0.01 

µ

F

MAIN board
FM/SW Telescopic
Antenna (ANT1)

0.047 

µ

F

10 

µ

F

IN OUT

+

MAIN board

IF swimmer 

scope

AM (MW) Ferrite-Rod Antenna

(L7)

TP (DET OUT)

– 16 –

Procedure:
1. Connect the frequency counter as shown the figure below.

(Use a frequency counter having high input impedance)

2. Set the BAND switch to FM position.
3. Tune the set to 98 MHz.
4. Adjust RV1 for 76 kHz reading on the frequency counter.

Specified Value: 75.5 to 76.5 kHz

Adjustment Location: MAIN board

FM RF SSG

Carrier frequency: 98 MHz
Modulation: no modulation
Output level: 0.1 V (100 dB)

MAIN board
FM/SW Telescopic
Antenna (ANT1)

0.01 

µ

F

+
–

IC2 

4

 (VCO)

R34

27 k

Ω

RV1

TP9

240 k

Ω

frequency counter

Procedure:
1. Connect the tester as shown the figure below.
2. Set the BAND switch to FM position.
3. Tune the set to 98 MHz.
4. Adjust RV2 for +0.275 V reading on the tester.
5. Make sure that the TP429 on LCD board is over 2.4 V.

Specified Value: +0.274 to 0.276 V

Adjustment Location: MAIN board

FM RF SSG

Carrier frequency: 98 MHz
Modulation: no modulation
Output level: 0.1 V (100 dB)

MAIN board
FM/SW Telescopic
Antenna (ANT1)

0.01 

µ

F

+
–

LCD board

TP418 (AFC)

TP419 (REG)

Tester

In case of failure, check AM tracking adjustment and AM IF ad-
justment, as there is no place to be adjusted. Also, confirm that the
TP16 on the MAIN board voltage is 3.3 V during auto scan and
the TP429 on the LCD board is over 2.4 V at the reception of AM.

L12
SW

FREQUENCY

COVERAGE

Adjustment

T1

AM IF

Adjustment

TP

(VT)

TP16

L13

AM (MW)

FREQUENCY

COVERAGE

Adjustment

FM TRACKING   CT3
Adjustment          L14

CT1
L8

RV1

FM VCO

Adjustment

RV2

FM AUTO SCAN

Adjustment

L7 
CT2 

AM (MW)
TRACKING
Adjustment

SW
TRACKING
Adjustment