Sony Walkman ICF-CD543RM User manual

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
C2005.07 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 3.2–ohm 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

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
TheAC 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 2VAC range are suit-
able. (See Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k Ω 0.15 µFAC
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 0OR DOTTED
LINE WITH MARK 0ON 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.

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.

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 ubuttons 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”.
2Press CLOCK for a few seconds.
You will hear a beep and the hour will start
to flash in the display.
3Press TUNE/TRACK•TIME SET + or –
until the correct hour appears in the
display.
4Press CLOCK once.
The minute will flash.
5Repeat steps 3and 4to 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)
1Plug in the CD kitchen clock radio.
The display will flash “AM 12:00” or “0:00”.
2Press CLOCK for a few seconds.
You will hear a beep and the hour will start
to flash in the display.
3Press TUNE/TRACK•TIME SET + or –
until the correct hour appears in the
display.
4Press CLOCK once.
The minute will flash.
5Repeat steps 3and 4to 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 ubuttons have a
tactile dot.
SECTION 2
GENERAL This section is extracted from
instruction manual.

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

ICF-CD543RM
6
4 six screws
(BTP3 × 14)
4 two screws
(P3 × 8)
3 CD lid
1 Turn on the power supply, and press the button (open)
to open the tray.
2 two claws
4 five screws
(BTP3 × 14)
4 three screw
s
(BTP3 × 14)
4 three screws
(BTP3
× 14)
5 cabinet (upper)
Note: On installation cabinet (upper)
adjust the S691 and
knob (mega bass).
knob (mega bass)
S691
Note: Follow the disassembly procedure in the numerical order given.
3-2. CABINET (UPPER), CD LID
3-3. CD BLOCK SECTION
1 Turn on the power supply,
and press the button (open)
to close the tray.
4 connector
(CN651)
5 CD block section
3 flexible flat cable (14 core
)
(CNP702)
2

ICF-CD543RM
7
3-4. PANEL (FRONT) SECTION
3-5. HOLDER (MD)
2 two screws
(P2.6
× 8)
1 parallel wire lead
(CN301)
3
7 screw
(BTP3
× 14)
8 two screws
(P2.6
× 8)
9 claw
0 panel (front) section
9 claw
8 two screws
(P2.6
× 8)
7 screw
(BTP3
× 14)
6 parallel wire lead
(CN1)
5 relay board
4 two parallel wire leads
(CN671, CN672)
2 holder (MD
)
1 two screws
(BTP3 × 14)
1 two screws
(BTP3 × 14)

ICF-CD543RM
8
3-6. CD BOARD
3-7. CHUCK PLATE ASSY
4 flexible flat cable (16 core)
(CNP701)
2 screw
(BVTT2
× 6)
3
1 Remove four solders of the
spindle motor and loading motor.
1 two screws
(P2.6
× 8)
2 chuck plate assy

ICF-CD543RM
9
3-8. TRAY
3-9. BELT, LOADING BOARD
2 claw
3
A
2 claw
1 Turn the drive gear in the
direction of the arrow
A .
4 tray
1 belt
3 claw
3 claw
4 loading board
2 two screws
(M2
× 3)

ICF-CD543RM
10
3-10. BASE UNIT
3-11. ARM, OPTICAL PICK-UP SECTION (KSM-213RCP)
3 boss
4 base unit
2 boss
2 boss
1 two screws
(PWH2.6
× 10)
2 arm
4 vibration proof rubber
(red)
4 vibration proof rubbe
r
(red)
3 vibration proof rubber
(green)
3 vibration proof rubber
(green)
1 two screws
(PWH2.6
× 10)
5 optical pick-up section
(KSM-213RCP)

ICF-CD543RM
11
3-12. OPTICAL PICK-UP (KSS-213R)
2 two screws (M2)
1 gear (B)
4 sled shaf
t
5 optical pick-up
(KSS-213R)
3

12
ICF-CD543RM
(): AEP model
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
RV1 1,000 kHz (999 kHz)
(): AEP model
AM VCO VOLTAGE ADJUSTMENT
Adjustment Part Frequency Display Reading on Digital Voltmeter
L2 530 kHz 2.3 ±0.05 V
Confirmation 1,710 kHz 9.3 ±2.0 V
(1,602 kHz) (8.6 ±1.5 V)
(): AEP model
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1 580 kHz (621 kHz)
CT1 1,490 kHz (1,395 kHz)
FM/TV (2 – 6 CH) VCO VOLTAGE CONFIRMATION (US model)
Adjustment Part Frequency Display Reading on Digital Voltmeter
Confirmation 108 MHz 14.2 ±2.0 V
Confirmation TV 2 ch 2.2 ±0.4 V
FM/TV (2 – 6 CH) TRACKING ADJUSTMENT (US model)
Adjust for a maximum reading on level meter
L3 TV 2 ch
CT2 108 MHz
TV (7 – 13 CH)/WEATHER (1 – 7 CH)
VCO VOLTAGE CONFIRMATION (US model)
Adjustment Part Frequency Display Reading on Digital Voltmeter
Confirmation TV 13 ch 9.2 ±1.5 V
Confirmation WEATHER 2 ch 4.2 ±0.5 V
TV (7 – 13 CH)/WEATHER (1 – 7 CH)
TRACKING ADJUSTMENT (US model)
Adjust for a maximum reading on level meter
L4 WEATHER 2 ch
CT3 TV 13 ch
FM VCO VOLTAGE CONFIRMATION (Canadian, AEP models)
Adjustment Part Frequency Display Reading on Digital Voltmeter
Confirmation 87.5 MHz 2.5 ±0.4 V
Confirmation 108.0 MHz 9.0 ±2.0 V
FM TRACKING ADJUSTMENT (Canadian, AEP models)
Adjust for a maximum reading on level meter
L3 87.5 MHz
CT2 108 MHz
Adjustment Location: MAIN board (See page 14)
TUNER SECTION 0 dB=1 µV
[AM]
Setting:
Function : RADIO
RADIO ON/BAND button : AM
[FM/TV/WEATHER]
Setting:
Function : RADIO
RADIO ON/BAND button: FM or TV or WEATHER
•Repeat the procedures in each adjustment several times, and the
tracking adjustments should be finally done by the trimmer ca-
pacitors.
•Remove FM antenna in FM adjustment.
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.
+
–
level meter
set
4.0 Ω
MAIN board
CN371 pin 3
MAIN board
CN371 pin 4
FM RF signal
generator
22.5 kHz frequency
deviation by 400 Hz
signal
Output level:
as low as possible
+
–
level meter
MAIN board
CN371 pin
3
MAIN board
CN371 pin 4
set
4.0 Ω
0.01 µ F
MAIN board
TP (FM GND)
MAIN board
TP (FM IN)
digital voltmeter
TP (VT)
TP (FM GND)
100 k
Ω
MAIN board
SECTION 4
ELECTRICAL ADJUSTMENTS
digital voltmeter
TP (VT)
TP (AM GND)
100 k
Ω
MAIN board

13
ICF-CD543RM
FM STEREO ADJUSTMENT
Setting:
Function: RADIO
RADIO ON/BAND button: FM
1. Connect the frequency counter to TP (FMST) and TP (RA-
DIO +B) as shown the figure below.
2. Tune the set to 87.5 (98.0) MHz.
3. Adjust RV2 for 75.95 to 76.05 kHz reading on the frequency
counter.
Adjustment Location: MAIN board (See page 14)
33 k Ω
++
–
MAIN board
TP (FMST)
TP (RADIO +B)
TP (FM GND)
frequency counter
1
µ F/50 V
set
MAIN board
TP (FM IN)
MAIN board
TP (FM GND)
( ): Canadian, AEP models
0.01
µ F
Carrier frequency : 87.5 (98.0) MHz
Modulation : no modulation
Output level : 0.1 V (100 dB)
FM RF SSG

14
ICF-CD543RM
– MAIN BOARD (Component Side) –
– MAIN BOARD (Conductor Side) –
CT2 FM/TV (2 – 6 ch) Tracking Adjustment (US model)
L3
}
FM Tracking Adjustment (Canadian, AEP models)
L4 TV (7 – 13 ch)/WEATHER (1 – 7 ch) Tracking Adjustment (US model)
CT3
}
CT1 AM Tracking Adjustment
L1
}
RV2 FM Stereo Adjustment
RV1 AM IF Adjustment
L2 AM VCO Adjustment
TP
(VT)
TP
(FM IN)
TP
(FM GND)
TP
(AM GND)
TP
(RADIO B+) 4
CN371
1
TP
(FM ST)
Adjustment Location:

15
ICF-CD543RM
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) andTP (GND) on the CD
board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the u(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)
VOLT/DIV: 0.2 V (with the 10: 1 probe in use.)
TIME/DIV: 500 ns
0.8
± 0.2 Vp-p
When observing the eye pattern, set the oscilloscope
for AC range and raise vertical sensitivity.
Adjustment Location:
IC701
TP (GND)
TP
(RF)
– CD BOARD (Conductor Side) –

16
ICF-CD543RM
MEMO

ICF-CD543RM
1717
A
A
BB
DD
FF
EE
C
C
I-V AMP
DETECTOR
12
11
17
18
26 SL+
SL–
F–
F–
F+
F+
T+
T+
T–
T–
SPINDLE
MOTOR DRIVE
M701
(SPINDLE)
S701
(LIMIT)
SLED
MOTOR DRIVE
27
M702
(SLED)
FOCUS
COIL DRIVE
TRACKING
COIL DRIVE
SP+
SP– 3
25
9
19
FIN
TIN
SLIN
SPIN
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC702
LD
LD
PD
PD
LASER DIODE
OPTICAL PICK-UP
(KSS-213R)
2-AXIS
DEVICE
(FOCUS)
(TRACKING)
2
1
1
M
M
7MUTE
AUTOMATIC
POWER
CONTROL
Q701
8FIN2
7FIN1
+
MIX 4
RF
LPF
EQ
PH
BH
10 TIN2
9TIN1
A/D
SW
LPF
TRACK
JUMP
TBAL
80 LDD APC
AUDIO
ADJUST
SERVO
PROCESSOR
RUPTURE
DETECT
79
LDS
SW
AGC
D/A
13
FE
15
TE
20
TDO
21
FDO
23
SLDO
22
SPDO
S/H
3
EFM
IN SLISE LEVEL
CONTROL
ERROR
CORRECTION
AUDIO CD
C1 – 2, C2 – 2
RAM
8FS
DIGITAL
FILTER
INTERPOLATION
MUTE
ATTENUATION
DEEMPHASIS
1 BIT
DAC
42
LCHO
45
RCHO
LPF
39
DOUT
AUDIO
OUT
FSEQ
PLL
VCEC
CLV, CAV
CONTROL
FRAME SYNC
DETECT,
PROTECT INSERT,
EFM DECODE
31
RAM
DRF 67
25
CONT4
72
CONT1
66
RES
61
CE
62
CL
63
DI
64
DO
65
WRQ
RF AMP, FOCUS/TRACKING SERVO,
DIGITAL SIGNAL PROCESSOR,
CLV SERVO, D/A CONVERTER
IC701
50 WRQ
56 C DATA IN
54 C DATA
55 C CLK
53 C LAT
57 XRST
33 OPEN S/W
OPEN
34 CLOSE S/W
CLOSE
46 DRF
51 FSEQ
CD-L
S651
TRAY
OPEN/CLOSE DETECT
(Page 18)
A
SYSTEM
CONTROLLER
IC401 (1/2)
R-CH
: CD PLAY
•R-ch is omitted due to same as L-ch.
•SIGNAL PATH
GENERAL-PURPOSE
PORTS
COMMAND
INTERFACE
DRF
XOUT XIN
49 48
X701
33.8688MHz
7B OUT
A OUT
B IN
A IN
8
35 TRAY OPEN
TRAY CLOSE
36
2
LOADING MOTOR
DRIVE
IC651
3
M651
(LOADING) M
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM – CD Section –

ICF-CD543RM
1818
25
22
20
16 18
12
19
20
11
FM
RF AMP
FM/TV
LPF
MPX
DECODER
TV/FM
OSC
AM/FM: 1/2
TV: 1/8
PHASE DETECTOR
CHARGE PUMP
DATA SHIFT REGISTER
LATCH
FMIN MPXI
R-CH
ARFI
150kHz
DETO
45kHz
FMRO
TVRO
AMLO FTLO
FMIN
60
POWER ON
52
BUZZER
79
A MUTE
80
KITCHEN LED
AMIN
29
IFCT
12
BAND
1
VCO
TV/FM/AM RF AMP,
MIX, OSC, DET, MPX
IC1
FM/AM PLL
IC51
SYSTEM CONTROLLER
IC401 (2/2)
RV1
AM IF
RV2
FM STEREO
D4
VT
AM
OSC
FM
LMT
FM
DET
AGC
AMP
AM
BPF
19
REGV
24 TV
RF AMP
TVIN
FM/TV ANT IN
(from AC line)
CT3, L4
CT2, L3
CT1, L1
L3
FM RF
CT2
BPF1
AM TRACKING
BPF
L1
AM
FERRITE-ROD
ANTENNA
L2
AM OSC
X51
75kHz
AM
RF AMP
26
L5
FM/TV OSC
CT1
L4
TV RF CT3
D3
D2
(1/2)
D2 (2/2)
D5
++
35
LOUT 3L OUT 3
STANDBY
8
L IN
12
36
BUFFER
Q101
OSC BUFFER
Q1
AM VCO
VOLTAGE FM/TV VCO
VOLTAGE
FM/TV (2 – 6CH)
TRACKING
AMP
IC301
BUFFER
Q102
MUTING
Q151
LEVEL SHIFT
Q671
5V
R-CH
R-CH R-CH
R-CH
Q351
S691
OFF LOW HIGH
MEGA BASS
BASS BOOST
CONTROL
Q111, 112
LOW-PASS
FILTER
Q51, 52
STANDBY
SWITCH
Q371, 372
LIQUID CRYSTAL DISPLAY
LCD401
POWER AMP
IC371
VOUT2
DATA
4
CLOCK
5
VIN2
8 7
ELECTRICAL
VOLUME
IC331
CD-L
D404
SP101
(L-CH)
SP201
(R-CH)
PSN
REGULATOR
VCO
BAND SELECT
Q2
15 PD
5
BO1
6
BO2
PSN
SWALLOW
COUNTER
1/16, 1/17, 4BITS
12BITS
PROGRAMMABLE
DIVIDER
CCB
I/F
XT2 XT1
R CLK
R DATA IN
R CE
X2 X1
CLK
2
3
1
40
ENCODE–
48
RC
39
ENCODE+
63 6462
DI
XIN
XOUT
CE
70 71
X402
32.768kHz
74 75
X401
4.19MHz
59
VR CLOCK
58
VR DATA
A
(Page 17)
KEY0 – KEY2
42 – 44
COM0 – COM3
6 – 9
SEG0 – SEG15
10 – 25
S401 – 417
: CD PLAY
: FM
: TV (US model only)
: AM
•R-ch is omitted due to same as L-ch.
•SIGNAL PATH
(US)
(US)
TIMER
PUSH START/STOP
ROTARY
ENCODER
S403
REMOTE CONTROL
RECEIVER
IC403
SIRCS BUFFER
Q401
76
RESET
77
CD ON
RADIO ON 78
49
AC IN
B+ SWITCH
Q301
+6V
REGULATOR
Q952
+5V
REGULATOR
Q951
+3.3V
REGULATOR
Q953
T901
POWER
TRANSFORMER
(AC IN)
RECT
D917 – 919
VT
FM/TV ANT IN
5V
MOTOR 6V
TU 3.3V
CD 3.3V
RECT
D915, 916
RECT
D911 – 914
B+ SWITCH
Q302
3.3V
D301
RESET SIGNAL
GENERATOR
IC402
D971
U-COM 3.3V
D401 – 403
LCD BACK
LIGHT
AMP B+
U-COM 3.9V
+
+
R-CH
D371
TV (7 – 13CH)/
WEATHER (1 – 7CH)
TRACKING
5-2. BLOCK DIAGRAM – MAIN Section –

ICF-CD543RM
1919
5-3. NOTE FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAMS •Circuit Boards Location
Note on Printed Wiring Boards:
•X: parts extracted from the component side.
•Y: parts extracted from the conductor side.
•W: indicates side identified with part number.
•f: internal component.
•: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Partsonthepattern facesideseenfrom
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
Note on Schematic Diagram:
•All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
•All resistors are in Ωand 1/4W or less unless otherwise
specified.
•f: internal component.
•5: fusible resistor.
•C: panel designation.
•A: B+ Line.
•B: B– Line.
•H: adjustment for repair.
•Voltages are takenwithaVOM(Input impedance 10MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
•Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
•Circled numbers refer to waveforms.
•Signal path.
F: FM/TV (2 – 6 ch)
L: TV (7 – 13 ch)/WEATHER (1 – 7 ch)
f: AM
J: CD
•Abbreviation
CND : Canadian model
Note:
The components identi-
fied by mark 0or dotted
linewithmark 0arecriti-
cal for safety.
Replace only with part
number specified.
Note:
Lescomposantsidentifiéspar
une marque 0sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro
spécifié.
LOADING board
CD board
MAIN board
TRANSFORMER boar
d
RELAY board
SWITCH board
RAY CATCHER board
LCD board

ICF-CD543RM
2020
M702
(SLED)
S701
(LIMIT)
C732
CNP701
X701
CNP702
C702
JW701 JW702
JW703 JW705
JW706
JW707
JW708
JW709
JW713
JW714
JW716
JW717
JW718
JW721
JW722
JW723
JW724
JW725
JW726
JW727
JW728
JW729
JW730
C740
C750
C746
C747
JW719
C735
JW720
JW711
C733
C706
JW712
JW710
JW715
Q701
IC702
C729
C730 R730
R728
R729
C704
R708
C728
R724
R722
R725
R726
R707
C701
C726
C723
C725
C724
R719
R717
R718
R716 C720
C721
C722
R731
R721
R720
C716
R715
R714 C727
C711 C709
FB701
C736
C734
R709
C705
R704
R702
R711 R710
R703
R705
R701
C703
C731
R706
C738
C739
R727
R712
R723
C708
R741
JC701
R743
C751
JC702
C743
C744
C745
C742
C754
C755
C741
JC704
C707
L706 C717
R744
IC701
CD BOARD
A
RELAY BOARD
CN673
M
M
M701
(SPINDLE)
1-680-943-
13
(13)
C
D
E
F
G
H
12 3 4 5 6 7 8
A
B
TP
(GND)
TP
(RF)
OPTICAL
PICK-UP
BLOCK
(KSS-213R)
5-4. PRINTED WIRING BOARD – CD Section – • See page 19 for Circuit Boards Location.
(Page 22)
•Semiconductor
Location
Ref. No. Location
IC701 C-4
IC702 H-3
Q701 F-5