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SERVICE MANUAL
US Model
Canadian Model
AEP Model
SPECIFICATIONS
ICF-CD543RM
Ver. 1.2 2005.07
9-873-658-03
Sony Corporation
2005G05-1
Personal Audio Group
C
2005.07
Published by Sony Engineering Corporation
US Model
TV/WEATHER/FM/AM CD KITCHEN CLOCK RADIO
Canadian, AEP Models
FM/AM CD KITCHEN CLOCK RADIO
(US model only)
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION
With 3.2­ohm loads, both channels driven from
100 ­ 10 000 Hz; rated 1.4 W per channel-
minimum RMS power, with no more than 10 %
total harmonic distortion in AC operation.
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
+1
­1.5
dB
Wow and flutter: Below measurable limit
Radio section
Frequency range:
US model
TV:
2 ­ 13 ch
WEATHER: 1 ­ 7 ch
FM:
87.5 ­ 108 MHz
AM:
530 ­ 1 710 kHz
Canadian model
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
General
Time display:
US, Canadian models: 12-hour system
AEP model: 24-hour system
Speaker:
77 mm (3 1/
8 inches) dia., 3.2
Power outputs:
2 W + 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. 350
× 88 × 310 mm (w/h/d)
(Approx. 13 7/
8 × 3
1/
2 × 12
1/
4 inches) incl.
projecting parts and controls
Mass:
Approx. 2.9 kg (6 lb. 6 oz.)
Supplied accessories:
Mounting screws (3), Template (1),
Spacers (3), Cord clamp (1),
Remote commander (RM-CD543A) (1)
Design and specifications are subject to change
without notice.
Model Name Using Similar Mechanism
NEW
CD Mechanism Type
FLM-CD543RM-149
Optical Block Name
KSM-213RCP
Optical Pick-up Name
KSS-213R


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2
ICF-CD543RM
About CD-Rs/CD-RWs
This unit 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 chip component replacement
·Never reuse a disconnected chip component.
· Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing 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" indica-
tion is 0.75 V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-
amples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2 V AC range are suit-
able. (See Fig. A)
Fig. A.
Using an AC voltmeter to check AC leakage.
1.5 k
0.15 µF
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
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 PUB-
LISHED BY SONY.
This Compact Disc player is classified
as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT label
is located on the top exterior.


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3
ICF-CD543RM
panel (front)
MEGA BASS : Original Type, Silver Type
LIV
: Liv Type
TABLE OF CONTENTS
1.
SERVICING NOTES ..............................................
3
2.
GENERAL ..................................................................
4
3.
DISASSEMBLY
3-1. Disassembly Flow ...........................................................
5
3-2. Cabinet (Upper), CD Lid ................................................
6
3-3. CD Block Section ............................................................
6
3-4. Panel (Front) Section ......................................................
7
3-5. Holder (MD) ....................................................................
7
3-6. CD Board .........................................................................
8
3-7. Chuck Plate Assy ............................................................
8
3-8. Tray ..................................................................................
9
3-9. Belt, Loading Board ........................................................
9
3-10. Base Unit ......................................................................... 10
3-11. Arm, Optical Pick-up Section (KSM-213RCP) ............. 10
3-12. Optical Pick-up (KSS-213R) .......................................... 11
4.
ELECTRICAL ADJUSTMENTS
Tuner Section ................................................................. 12
CD Section ..................................................................... 15
5.
DIAGRAMS
5-1. Block Diagram ­ CD Section ­ .................................... 17
5-2. Block Diagram ­ MAIN Section ­ ............................... 18
5-3. Note for Printed Wiring Board and
Schematic Diagrams ....................................................... 19
5-4. Printed Wiring Board ­ CD Section ­ .......................... 20
5-5. Schematic Diagram ­ CD Section ­ ............................. 21
5-6. Printed Wiring Boards ­ RELAY Section ­ ................. 22
5-7. Schematic Diagram ­ RELAY Section ­ ..................... 23
5-8. Printed Wiring Boards ­ MAIN Section ­ ................... 24
5-9. Schematic Diagram ­ MAIN section ­ ........................ 25
5-10. Printed Wiring Boards ­ PANEL Section ­ ................. 26
5-11. Schematic Diagram ­ PANEL Section ­ ...................... 27
5-12. IC Pin Function Description .......................................... 32
6.
EXPLODED VIEWS
6-1. Cabinet (Upper) Section ................................................. 34
6-2. Panel (Front) Section ...................................................... 35
6-3. Cabinet (Lower) Section ................................................. 36
6-4. CD Block Section ............................................................ 37
6-5. CD Mechanism Deck Section
(FLM-CD543RM-149) ................................................... 38
6-6. Base Unit Section ............................................................ 39
6-7. Optical Block (KSM-213RCP) ....................................... 40
7.
ELECTRICAL PARTS LIST .............................. 41
SECTION 1
SERVICING NOTES
MODEL NO.
ICF-CD543RM
US, Canadian models: AC: 120 V
60 Hz 15 W
AEP model: AC: 220 ­ 230 V
50 Hz 15 W
The laser diode in the optical pick-up block may suffer electro-
static 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 emis-
sion, observe from more than 30 cm away from the objective lens.
MODEL IDENTIFICATION ­ Top View ­
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
There are three types of US model.
Please look at the mark of set shown below.


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4
ICF-CD543RM
OFF
LOW
MEGA BASS
HIGH
PLAY MODE
1
2
3
4
5
PRESET TUNING
SELECT
PRESET
VOLUME
TUNE/TRACK
TIME SET
RADIO
CD
OFF
ON/BAND
CLOCK
D.S.T.
SUMMER T.
PUSH START/STOP
TIMER
OPEN/CLOSE
AC power cord
Cord clamp
The preset 3, VOLUME + and
CD u buttons have a tactile dot.
Push
Turn
TIMER
TIMER
indicator
Features
· Built-in CD player with CD-R/RW playback
function
·Dynamic Bass Reflex Sound with the MEGA
BASS sound system
· TV/WEATHER/FM/AM 4 band PLL (phase
locked loop) synthesized clock radio (US
model)
·FM/AM 2 band PLL (phase locked loop)
Setting the Clock
(US model)
1 Plug in the CD kitchen clock radio.
The display will flash "AM 12:00".
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 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
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) 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.
(Canadian, AEP models)
·Easy Preset Digital Tuning with 25 station presets
·Easy to set dial cooking timer
· Remote Commander Included
· D.S.T. (Daylight Saving Time) ­ Summer time
calculation
(Canadian, AEP model)
1 Plug in the CD kitchen 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 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) 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.
Magnet
Size AAA (R03) x 2
The VOL + and u buttons have a
tactile dot.
SECTION 2
GENERAL
This section is extracted from
instruction manual.


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ICF-CD543RM
5
SET
3-2. CABINET (UPPER), CD LID
(Page 6)
3-3. CD BLOCK SECTION
(Page 6)
3-4. PANEL (FRONT) SECTION
(Page 7)
3-5. HOLDER (MD)
(Page 7)
3-6. CD BOARD
(Page 8)
3-7. CHUCK PLATE ASSY
(Page 8)
3-8. TRAY
(Page 9)
3-9. BELT, LOADING BOARD
(Page 9)
3-10. BASE UNIT
(Page 10)
3-11. ARM,
OPTICAL PICK-UP SECTION
(KSM-213RCP)
(Page 10)
3-12. OPTICAL PICK-UP
(KSS-213R)
(Page 11)
Note 1:
The process described in
can be performed in any order.
Note 2:
Without completing the process described in
, the next process can not be performed.
· This set can be disassembled in the order shown below.
3-1.
DISASSEMBLY FLOW
SECTION 3
DISASSEMBLY