Sony ZS-X3CP Marketing Specifications & Features User manual

SERVICE MANUAL
(US model only)
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION
With 3.2-ohm loads, both channels driven from
150 - 10,000 Hz; rated 1.8 W per channel-
minimum RMS power, with no more than 10 %
total harmonic distortion in AC operation.
Other Specifications
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 +1/–2 dB
Wow and flutter
Below measurable limit
Radio section
Frequency range
FM: 87.5 - 108 MHz
AM: 530 - 1 710 kHz (US, Canadian models)
Antennas
FM: Telescopic antenna
AM: Built-in ferrite bar antenna
Battery life
For CD playback:
Sony R20P: approx. 7.5 h
Sony alkaline LR20: approx. 14 h
Dimensions
Approx. 430 ×172 ×287.5 mm (w/h/d)
(17 ×6 7⁄8×11 3⁄8 inches)(incl. projecting parts)
MassApprox. 4.6 kg (7 lb. 11 oz) (incl. batteries)
Supplied accessories
AC power adaptor (1)
Design and specifications are subject to change without
notice.
AUDIO POWER SPECIFICATIONS General
Speaker
Full range: 10 cm (4 in.) dia.,
3.2 Ω, cone type (2)
Outputs
Headphones jack (stereo minijack)
For 16 - 68 Ωimpedance headphones
Power output
2.3 W + 2.3 W (at 3.2 Ω, 10 % harmonic
distortion)
Power requirements
DC IN 9V jack accepts:
Supplied AC power adaptor for use with 120 V AC,
60 Hz (US, Canadian models)
9 V DC, 6 size D (R20) batteries
MW:531 - 1 611 kHz (9 kHz step) (Except US, Canadian models)
530 - 1 610 kHz (10 kHz step) (Except US, Canadian models)
LW: 153 - 279 kHz (Except US, Canadian models)
IF FM: 10.7 MHz (Except US, Canadian models)
MW/LW: 450 kHz (Except US, Canadian models)
Supplied AC power adaptor for use with 230 V AC,
50 Hz (Except US, Canadian models)
PERSONAL AUDIO SYSTEM
US Model
Canadian Model
AEP Model
UK Model
SPECIFICATIONS
ZS-X3CP
Ver 1.2 2002.10
9-873-537-03 Sony Corporation
2002J0500-1 Personal Audio Company
C2002.10 Published by Sony Engineering Corporation
Model Name Using Similar Mechanism NEW
CD Mechanism Type KSM-900AAA
Optical Pick-up Name KSS-900A

2
ZS-X3CP
TABLE OF CONTENTS
1. SERVICING NOTES.............................................. 4
2. GENERAL .................................................................. 5
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 7
3-2. Cabinet Lower, Telescopic Antenna (ANT1) ................. 8
3-3. Main Chassis Section ...................................................... 9
3-4. AUDIO Board, BATTERY Board .................................. 9
3-5. TUNER Board, CONTROL Board................................. 10
3-6. CDMP3 Board................................................................. 11
3-7. Optical Pick-up Section .................................................. 11
3-8. Sled Motor Assy (780CP) (M702).................................. 12
3-9. Optical Pick-up (KSS-900A) .......................................... 12
3-10. Cabinet Front Section ..................................................... 13
3-11. Speaker (10cm) (L) (SP1), Speaker (10cm) (R) (SP2) .. 13
3-12. Lid CD ............................................................................. 14
4. ELECTRICAL ADJUSTMENTS
Tuner Section ................................................................. 15
CD Section ..................................................................... 17
5. DIAGRAMS
5-1. Block Diagram – CD Section – .................................... 18
5-2. Block Diagram – TUNER Section – ............................ 19
5-3. Block Diagram – MAIN Section – ............................... 20
5-4. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 21
5-5. Printed Wiring Boards – CD Section – ........................ 23
5-6. Schematic Diagram – CD Section (1/2) – .................... 24
5-7. Schematic Diagram – CD Section (2/2) – .................... 25
5-8. Printed Wiring Board
– TUNER Section (US, Canadian Models) –................ 26
5-9. Schematic Diagram
– TUNER Section (US, Canadian Models) –................ 27
5-10. Printed Wiring Board
– TUNER Section (Except US, Canadian Models) – ... 28
5-11. Schematic Diagram
– TUNER Section (Except US, Canadian Models) – ... 29
5-12. Printed Wiring Boards – CONTROL Section – ........... 30
5-13. Schematic Diagram – CONTROL Section –................ 31
5-14. Printed Wiring Boards
– AUDIO/POWER Section – ......................................... 32
5-15. Schematic Diagram – AUDIO/POWER Section –....... 33
5-16. IC Pin Function Description .......................................... 35
6. EXPLODED VIEWS
6-1. Cabinet Lower Section.................................................... 39
6-2. Cabinet Front Section ..................................................... 40
6-3. Cabinet Upper Section-1................................................. 41
6-4. Cabinet Upper Section-2................................................. 42
6-5. Cabinet Upper Section-3................................................. 43
6-6. Main Chassis Section ...................................................... 44
6-7. Optical Pick-up Section (KSM-900AAA) ..................... 45
7. ELECTRICAL PARTS LIST .............................. 46
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
Ver 1.1
This Compact Disc player is classified as a
CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT label is located
at the bottom.

3
ZS-X3CP
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.
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.
Flexible Circuit Board Repairing
•Keep the temperature of the soldering iron around 270 ˚C dur-
ing 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 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-operatedAC 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 VAC 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
About CD-Rs/CD-RWs and MP3 files
This player can play CD-Rs/CD-RWs recorded in the CD-
DA format* and MP3 files recorded in the CD-ROM
format, but playback capability may vary depending on the
quality of the disc and the condition of the recording
device.
*CD-DA is the abbreviation for Compact Disc Digital Audio. It is
a recording standard used for Audio CDs.

4
ZS-X3CP SECTION 1
SERVICING NOTES
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.
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 S701. (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 S701 as shown in Fig.1.
Note: Do not push the detection lever strongly, or it may be bent or dam-
aged.
3. Press the ubutton.
4. Check 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.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
S701
Fig.1 Method to push the S701

5
ZS-X3CP
SECTION 2
GENERAL
4
Playing an audio CD or MP3 files
Connect the supplied AC power adaptor (see page 18).
1 Press POWER (US, Canadian models) or OPERATE
to turn on the player.
2 Press ZPUSH down to open the CD
compartment and place the CD on
the CD compartment until it clicks
into place.
3 Close the lid of the CD compartment.
With the label side up
142, 3
Basic Operations
(Except US, Canadian models)
Basic Operations
5
Display
Playing
time
Track
number
To Do this
adjust the volume Press VOLUME +*, –.
stop playback Press x.
pause playback Press u*.
Press the button again to
resume play after pause.
go to the next track Push jog lever toward >.
go back to the previous track Push jog lever toward ..
remove the CD** Press ZPUSH.
turn on/off the player Press POWER.
*The button has a tactile dot.
**Once you open the CD compartment, the track to start play will
change to the beginning of the first track.
Tip
Playback starts from the
track you last stopped
playing (Resume play).
During stop, the track
number to be played are
displayed.
To cancel the resume play
to start play from the
beginning of the first track,
press xin stop mode.
u
POWER (US,Canadian models)
OPERATE
(Except US, Canadian models)
VOLUME +, –
x
ZPUSH
continued
4Press u.
The player plays all the tracks once.
To play a CD with MP3 files, see
page 6.
Jog lever
Use these buttons for additional operations
(US, Canadian models)
Press OPERATE.
(Except US, Canadian models)
6
Note
Before playing a file, this
player reads all file and
folder information on the
CD. Depending on the
file structure, it may take
more than a minute to
read them. During this
time, “Reading” is
displayed.
Tip
You can use the buttons
mentioned in the table on
page 5 for additional
operations in the same
way as when playing an
audio CD.
Playing a CD with MP3 files
1Press POWER (US, Canadian models) or ORERATE
to turn on the player.
2Press ZPUSH to open the CD compartment and place
the CD on the CD compartment (see page 4) .
3Close the lid of the CD compartment.
4Press u.
The player plays all MP3 files on the CD.
When you play a CD with MP3 files, the MP3
indicator lights up.
To select a folder
Push the jog lever toward FLDR + to go forward and
FLDR – to go backward.
To select a file
Push the jog lever toward >to go forward and .to
go backward.
Track number
Folder name
u
Jog lever
MP3 indicator
POWER (US,Canadian models)
OPERATE
(Except US, Canadian models)
File name
Playing time
ZPUSH
Playing an audio CD or MP3 files (continued)
(Except US, Canadian models)
Basic Operations
7
CD-R
CD-RW
3
2
1
2
4
5
3
6
7
8
4
9
5
0
6
1
Example of folder structure and playing
order
The playing order of the folders and files is as follows:
MP3 file
Notes
¥A folder that does not
include an MP3 file is
skipped.
¥Maximum number of
folders: 255
Maximum number of files:
255
¥Folder names and file
names can be displayed
with up to 64 characters.
¥The characters A - Z, a - z,
0 - 9, and _ can be
displayed on this player.
Other characters are
displayed as *.
¥This player conforms to
Version 1.1 of the ID3 tag
format. If the file has the
ID3 tag information, song
title, artist nameand
album namecan be
displayed.
Folder
Ver 1.1
This section is extracted from
instruction manual.

6
ZS-X3CP
8
Listening to the radio
Connect the supplied AC power adaptor (see page 18).
1Press POWER (US, Canadian models) or OPERATE
to turn on the player.
2Press BAND•AUTO PRESET until
the band you want appears in the
display.
3Push the jog lever toward TUNE + or
TUNE – and hold it 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, push
the jog lever toward TUNE + or
TUNE – repeatedly to change the
frequency step by step.
132
Display
Indicates an FM
stereo broadcast
(Except US, Canadian models)
Basic Operations
9
Use these buttons for additional operations
Tip
If the FM broadcast is
noisy, press MODE until
“Mono” appears in the
display and radio will play
in monaural.
To Press
adjust the volume VOLUME +*, –
turn on/off the radio POWER (US, Canadian models)
OPERATE
(Except US, Canadian models)
*VOLUME + has a tactile dot.
To improve broadcast reception
Reorient the antenna for FM. Reorient the player itself for
AM (
US, Canadian models) or MW/LW
(Except US, Canadian models)
.
POWER (US,Canadian models)
OPERATE (Except, Canadian models)
VOLUME +, –
MODE
for FM forAM (US, Canadian models)
MW/LW
(Except US, Canadian models)
25
THE USABLE NUMBER OF
FOLDERS/FILES
¥Maximum folder number: 255
¥Maximum file number: 255
SETTINGS FOR COMPRESSION
SOFTWARE AND WRITING
SOFTWARE
¥To compress a source for an MP3 file, we
recommend setting the transfer bit rate of
the compression software to 44.1 kHz,
128kbps, and Constant Bit Rate.
¥To record up to the maximum capacity, set
to the halting of writing.
¥To record at one time up to the maximum
capacity on media that has nothing
recorded it, set to Disc at Once.
NOTES FOR SAVING FILES ON
THE MEDIA
When the disc is inserted, the player reads
all the files on that disc. If there are many
folders or non-MP3 files on the disc, it may
take a long time for play to begin or for the
next MP3 file to start play.
Do not save unnecessary folders or files
other than MP3 ones in the disc to be used
for MP3 listening.
We recommend that you do not save other
types files or unnecessary folders on a disc
that has MP3 files.
About “ID3 tag”
ID3 tag is a format for adding certain
information (song title, artist name, album
name, etc.) to MP3 files.
This player conforms to Version 1.1 of the
ID3 tag format. If the file has the ID3 tag
information, song title, artist nameand
album namecan be displayed.
Note
If you use a version other than 1.1, ID3 tag
information will not be displayed correctly.
About “MP3”
What is the MP3?
MP3 (MPEG 1 Audio Layer-3) is a standard
technology and format for compressing a
sound sequence. The file is compressed to
about 1/10 of its original size. Sounds
outside the range of human hearing are
compressed while the sounds we can hear
are not compressed.
Playable “MP3” files on this
player
You can only play MP3 files recorded by
following requirements.
USABLE MEDIA
CD-Rs and CD-RWs
USABLE DISC FORMAT
You can use ISO 9660 Level 1, Level 2 and
Joliet extension format discs. In some cases,
MP3 files that are recorded in a format other
than these formats may not play normally or
the file and folder names may not be
displayed correctly.
The major specifications of the usable disc
format are as follows:
¥Maximum directory steps: 8
¥Usable characters for a file/folder name:
A - Z, a - z, 0 - 9, _ (underscore)
¥Maximum number of characters for a file
name: 64 including quotation marks and a
3-character extension code
Notes
¥When naming, be sure to add the file extension
mp3to the file name.
¥If you put the extension mp3to a file other
than an MP3 file, the player cannot recognize
the file properly and will generate random noise
that could damage your speakers.
¥The file name does not correspond to the ID tag.
Ver 1.1

ZS-X3CP
7
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
SECTION 3
DISASSEMBLY
3-2. CABINET LOWER,
TELESCOPIC ANTENNA (ANT1)
(Page 8)
3-3. MAIN CHASSIS SECTION
(Page 9)
3-4. AUDIO BOARD,
BATTERY BOARD
(Page 9)
3-5. TUNER BOARD,
CONTROL BOARD
(Page 10)
3-6. CDMP3 BOARD
(Page 11)
3-7. OPTICAL PICK-UP
SECTION
(Page 11)
3-8. SLED MOTOR ASSY
(780CP) (M702)
(Page 12)
3-9. OPTICAL PICK-UP
(KSS-900A)
(Page 12)
3-10.CABINET FRONT SECTION
(Page 13)
3-11.SPEAKER (10cm) (L) (SP1),
SPEAKER (10cm) R) (SP2)
(Page 13)
3-12.LID CD
(Page 14)
SET

ZS-X3CP
8
1 Open the lid CD.
2 screw
(BVTP 3
× 14)
Note: Follow the disassembly procedure in the numerical order given.
3-2. CABINET LOWER, TELESCOPIC ANTENNA (ANT1)
3 lid battery
4 two screws
(BVTP3
× 14)
4 five screws
(BVTP3
× 14)
4 five screws
(BVTP3
× 14)
6 cabinet lower
7 telescopic antenna
(ANT1)
A
!
telescopic antenna
(ANT1)
main chassis
Note: Install the telescopic antenna with engagin
g
the ! portion to the main chassis, then
check that the antenna is engaged and
does not move even trying to rotate it
in the direction of arrow
A .
5 screw
(B3
× 8)

ZS-X3CP
9
4 audio board
3 three screws
(BVTP3 × 10)
1 flat cable (18P)
(CNP301)
2 connecto
r
(CNP901
)
8 battery board
7 claw
5 Remove the connector lead wire
from the incision.
6 terminal
3-3. MAIN CHASSIS SECTION
3-4. AUDIO BOARD, BATTERY BOARD
5 flat cable (30P
)
(CNP802)
4 flat cable (21P)
(CNP801)
2 two screws
(BVTP3 × 10)
2 two screws
(BVTP3 × 10)
6 main chassis section
3
1 two connectors
(CN302, CNP303)

ZS-X3CP
10
3-5. TUNER BOARD, CONTROL BOARD
3 two convex portions
2
7
1 screw
(BVTP3
× 10)
5 tuner board
4 connector
(CNP1)
8 Remove the lead wire
s
from the incision.
6 Remove the connector lead wires
from the incision.
0 two screws
(BVTP3
× 10)
qs control board
9 flat cable (18P)
(CNP301)
qa two claws

ZS-X3CP
11
3-6. CDMP3 BOARD
3-7. OPTICAL PICK-UP SECTION
3 flat cable (20P)
(CNP701)
5 CDMP3 board
1 three screws
(BTP2.6 × 8)
4 connector
(push (1 key) switch) (S701)
2
5 optical pick-up section
1 three PWH tapping screws
2 holder upper
4 connecto
r
(CNP704
)
3 flexible board (optical pick-up)
(CNP703)

ZS-X3CP
12
2 holder (780C)
1 screw
(2
× 8)
3 screw
(M2
× 2.5)
6 sled motor assy (780CP)
(M702)
4
5 two solders
3 gear (B) (780C)
2 holder (780C)
1 screw
(2
× 8)
7 sled screw assy (780E)
5 rack spring (780C)
4 screw
(B1.7
× 4)
8 optical pick-u
p
(KSS-900A)
6
3-8. SLED MOTOR ASSY (780CP) (M702)
3-9. OPTICAL PICK-UP (KSS-900A)

ZS-X3CP
13
3-10. CABINET FRONT SECTION
3-11. SPEAKER (10cm) (L) (SP1), SPEAKER (10cm) (R) (SP2)
2 cabinet front section
1 two screws
(BVTP3
× 10)
1 two screws
(BVTP3
× 10)
0 Remove two solders.
5 Remove two solders.
qs speaker (10cm) (R)
(SP2)
7 speaker (10cm) (L) (SP1)
qd cabinet front sub assy
9 holder front (L)
4 holder front (R)
2 handle cover
qa four screws
(BVTP3
× 10)
6 four screws
(BVTP3
× 10)
8 three screws
(BVTP3
× 10)
3 three screws
(BVTP3
× 10)
1 five screws
(BVTP3
× 10)

ZS-X3CP
14
3-12. LID CD
8 lid CD
4 claw 4 claw
lid CD lid CD
holder CD
6 spring CD
3 three screws
(BVTP3 × 10)
1 screw
(BVTP3
× 10)
2 damper
5 holder CD
7 Open the lid CD.

15
ZS-X3CP
AM (MW/LW) IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1 450 kHz
AM VCO VOLTAGE ADJUSTMENT (US, Canadian)
Adjustment Part Frequency Display Reading on Digital Voltmeter
L4 530 kHz 1.0 ±0.05 V
Confirmation 1,710 kHz 5.3 ±0.7 V
AM TRACKING ADJUSTMENT (US, Canadian)
Adjust for a maximum reading on level meter
L3 620 kHz
CT3 1,400 kHz
MW VCO VOLTAGE ADJUSTMENT (Except US, Canadian)
Adjustment Part Frequency Display Reading on Digital Voltmeter
L4 531 kHz 1.0 ±0.1 V
Confirmation 1,629 kHz 5.3 ±0.7 V
MW TRACKING ADJUSTMENT (Except US, Canadian)
Adjust for a maximum reading on level meter
L3-1 621 kHz
CT3 1,404 kHz
LW TRACKING ADJUSTMENT (Except US, Canadian)
Adjust for a maximum reading on level meter
L3-2 162 kHz
CT5 261 kHz
FM IF ADJUSTMENT
Adjust for a minimum reading on level meter
T2 10.7 MHz
FM VCO VOLTAGE ADJUSTMENT
Adjustment Part Frequency Display Reading on Digital Voltmeter
L2 108 MHz 3.0 ±0.2 V
Confirmation 87.5 MHz 1.3 ±0.3 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1 87.5 MHz
CT1 108 MHz
Adjustment Location: TUNER and AUDIO boards
(See page 16, 17)
TUNER SECTION 0 dB=1 µV
[AM (MW/LW) ]
Setting:
Function: RADIO
BAND/AUTO PRESET button:AM (US,Canadian)
MW or LW
(Except US,Canadian)
[FM]
Setting:
Function: RADIO
BAND/AUTO PRESET button: FM
•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
3.2 Ω
AUDIO board
CN302 pin 2
AUDIO board
CN302 pin 1
FM RF signal
generator
22.5 kHz frequency
deviation by 400 Hz
signal
Output level:
as low as possible
+
–
level meter
AUDIO board
CN302 pin 2
AUDIO board
CN302 pin 1
set
3.2 Ω
0.01 µF
TUNER board
TP (GND)
TUNER board
TP (ANT)
digital voltmete
r
TP (VT)
TP (GND)
100 kΩ
TUNER board
SECTION 4
ELECTRICAL ADJUSTMENTS
PRECAUTION
1. Setting
MEGA BASS control : OFF
Ver 1.1

16
ZS-X3CP
Adjustment Location:
TP
(VT)
TP
(GND)
TP
(ANT)
–TUNER BOARD (Component Side) (US, Canadian) –
–TUNER BOARD (Conductor Side) –
L4
AM VCO Voltage Adjustment
L2
FM VCO Voltage Adjustment
AM Tracking Adjustment CT3
L3
FM Tracking Adjustment
T1 AM IF Adjustment
T2 FM IF Adjustment
L1
CT1
Ver 1.1
–TUNER BOARD (Component Side) (Except US, Canadian) –
L4
AM VCO Voltage Adjustment
L2
FM VCO Voltage Adjustment
LW Tracking Adjustment CT3
L3-2
FM Tracking Adjustment
T1 AM IF Adjustment
T2 FM IF Adjustment
L1
CT1
MW Tracking Adjustment
CT3
L3-1

ZS-X3CP
1717
– CONTROL BOARD (Conductor Side) –
IC801
TAP
(TEST)
CD SECTION
Perform all CD section check in the test mode.
HOW TO THE SET INTO CD TEST MODE
1. Press the [POWER] button to turn the power on.
2. Press the xbutton.
3. Set test mode by momentarily shorting both of TAP (TEST)
on the CONTROL board.
4. Press the xbutton to enter the CD test mode.
5. To release the CD test mode, press the [POWER] button to
turn the power off.
Checking Location:
TRAVERSE CHECK
1. Connect an oscilloscope to TP (TE) and TP (VC) on the
CDMP3 board.
2. Insert the disc (YEDS-18). (Part No.: 3-702-101-01) (CD)
3. Press the ubutton three times.
4. Confirm that the center of the oscilloscope waveform is at 0V.
5. Confirm that the oscilloscope waveformVp-p value is at 0.8 ±
0.2 V.
6. Insert the disc (TCD-W082L). (Part No.: J-2502-063-2) (CD-
RW)
7. Perform confirmation in the same manner as step 4 and 5.
FOCUS BIAS CHECK
1. Connect the oscilloscope to TP (RF) and TP (VC) on the
CDMP3 board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01) (CD)
3. Press the ubutton three times. (LPC ON)
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.
5. Press the ubutton three times. (LPC OFF)
6. Perform confirmation in the same manner as step 4.
7. Insert the disc (TCD-W082L). (Part No.: J-2502-063-2) (CD-
RW)
8. Perform confirmation in the same manner as step 4 to 6.
• RF signal reference waveform (eye pattern)
Checking Location:
VOLT/DIV: 0.2 V (with the 10: 1 probe in use.)
TIME/DIV: 500 ns
CD:
1.1
± 0.2 Vp-p (LPC ON)
1.1 ± 0.3 Vp-p (LPC OFF)
CD-RW:
1.0
± 0.2 Vp-p (LPC ON)
0.9 ± 0.3 Vp-p (LPC OFF)
When observing the eye pattern, set the oscilloscope
for AC range and raise vertical sensitivity.
VOLT/DIV:0.2 V (with the 10:1 probe in use)
TIME/DIV: 1 ms
0 V A
BVp-p=A+
B
IC701
– CDMP3 BOARD (Conductor Side) –
TP
(RF)
TP
(TE)
TP
(VC)
14
CN302
– AUDIO BOARD (Conductor Side) –

ZS-X3CP
1818
SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAM –CD Section –
PD2
DETECTOR
12
11
17
18
26 SL+
SL–
F–
F+
T+
T–
SPINDLE
MOTOR DRIVE
M701
(SPINDLE)
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
MP3 DECODER, CD-ROM DECODER,
ANTI-SHOCK CONTROLLER
IC703
D-RAM
IC704
LD
PD
LASER DIODE
OPTICAL PICK-UP
BLOCK
(KSS-900A)
2-AXIS
DEVICE
(FOCUS)
(TRACKING)
2
1
F
E
LD
PD
T+
T–
F+
F–
PD1
M
M
7MUTE
AUTOMATIC
POWER
CONTROL
Q701
7FIN1 MIX 4
RF
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
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
SERIAL
OUT
FSEQ
XIN
XOUT
PLL
VCEC
CLV, CAV
CONTROL
EXTERNAL
AUDIO IN
FRAME SYNC
DETECT,
PROTECT INSERT,
EFM DECODE
31
RAM
DRF 67
SBCK/FG 28
25
CONT4
72
CONT1 SBCK/ CONT6
66
*RES
61
CE
62
CL
63
DI
57
ASDFIN
56
ASDACK
55
ASLRCK
54
16MOUT
60
DATA
59
DATACK
58
LRSY
34
MONI3
35
MONI4
36
MONI5 FSX/16MIN C2F
64
DO
65
*WRQ
RF AMP, FOCUS/TRACKING SERVO,
DIGITAL SIGNAL PROCESSOR,
CLV SERVO, D/A CONVERTER
IC701
27
50 CD-WRQ
73 CD-DO
74 CD-DI
75 CD-CL
76 CD-CE
78 CD-RES
72 CD-DRF
77 CD-FSEQ
CD-L
47 CD-DOOR
S701
CD LID
OPEN/CLOSE
87 ESP
STDATIO 65 65 MP3-STDATIO
STCKIO 64 67 MP3-STCKIO
STREQIO 63 86 MP3-STREQIO
WOK 70 83 MP3-WOK
CNTOK 71 82 MP3-CNTOK
OVF 72 81 MP3-OVF
CMDOUT 73 68 MP3-CMDOUT
CMDIN 74 69 MP3-CMDIN
CL 75 70 MP3-CL
CE 76 80 MP3-CE
INTB 77 49 MP3-INTB
RESB 78 79 MP3-RESB
FSYNC 66 85 MP3-FSYNC
CRCF 67 84 MP3-CRCF
(Page 20)
A
SYSTEM
CONTROLLER
IC801 (1/2)
R-CH
: CD PLAY
•R-ch is omitted due to same as L-ch.
•SIGNAL PATH
COMMAND
INTERFACE
DRF
8FIN2
+
LPF
MONITOR
SIGNAL
SELECTOR
GENERAL-
PURPOSE
PORTS
50 52
X701
33.86MHz
48
49
CLOCK
GENERATOR
SBCK
15
SFSY
14
SBSY
13
PW
12
CKOUT
9
C2FIN
5
DATAIN
79
DATACK
80
LRSY
1
ADDATA
2
ADBCK
3
ADLRCK
4
CKIN
7
23 – 30, 33 – 40 60 – 53, 50
18 – 21, 24 – 28
2 – 5, 7 – 10,
35 – 38, 40 – 43
41
RASB MDATA0 – MDATA15
DQ0 – DQ15
MADRS0 – MADRS8
A0 – A8
RAS
16
42
WEB
WE
15
43
CASLB
LCAS
31
44
CASUB
UCAS
30
45
OEB
OE
29
S702
(LIMIT)

ZS-X3CP
1919
2
24
4 7
20 21
FM
RF AMP
FM
MIX
FM
OSC
FM IF
AMP
IF
BUFFER
AF
BUFFER
AF
AMP MPX MUTE
STEREO/
MONO,
FM/AM
AM IF
AMP
FM
DET
AM
DET
6
FM RF
IN
22 AM
RF AMP
Q14
AM
MIX
AM RF
IN
MIX OUT
OSC
OUT
CF2
FM/AM PLL
IC2
(US, CND) (EXCEPT US, CND)
CF4
FM
RF OUT
10
QUAD
FM
IF IN 12
15
11
L-OUT
MPX
IN
R-OUT
13
AM
IF IN
LPF1/BAND
AM OSC FM OSC
FM/AM RF AMP, MIX, OSC,
FM/AM IF AMP, DET, MPX
IC1
(US, CND) (EXCEPT US, CND)
L2
FM VCO VOLTAGE
L4
AM VCO VOLTAGE
CT1, L1
FM TRACKING
T1
AM IFT
LOW-PASS
FILTER
LOW-PASS
FILTER
• SIGNAL PATH
: FM
: AM (MW/LW)
X1
75kHz
CT3
L1
FM RF
XOUT
XIN
AM IN
IF IN
ST-IND
LP-OUT
LP-IN
FM IN
20
19
111218
MW/LW
6
CT1
D1
L4
MW/LW OSC
L2
FM OSC
LEVEL
DET
ST
IND
14
LPF2/MO-ST
AM
OSC BUFFER
BUFFER
SWALLOW
COUNTER
UNIVERSAL
COUNTER
CCB
INTERFACE
REFERENCE
DIVIDER
UNLOCK
DETECT
12 BIT
PROGRAMMABLE
DIVIDER
PHASE
DETECTOR/
CHARGE PUMP
SHIFT REGISTER & LATCH
1/2
BAND
DI
CL
CE
DO
DET
OUT
ANT1
FM TELESCOPIC
ANTENNA
PD
IF OUT ST IND
2
3
1
4
10 9
BAND
7
MO/ST
13817 16
17 18
16
19
CT5
D2
SW 9V
(AEP, UK)
D3
(1/2)
D3
(2/2)
AM HIGH
CUT
SWITCH
Q12
T1
AM IF
Q42
Q41
TU 6.2V
Q41, 42
MW SWITCH
L3-1
MW
L3-2
LW
L3
MW/LW
FERRITE-ROD
ANTENNA
MW
TRACKING
CT3, L3-1
LW
TRACKING
CT5, L3-2
Q44
LW
SWITCH
Q43
LW SWITCH
• R-ch is omitted due to same as L-ch.
R-DATA
R-CLOCK
R-CE
R-COUNT
R-CH
(Page 20)
C
R-MUTE
TU-L
(Page 20)
B
CONSTANT
CURRENT
Q61
T2
FM IFT
T2
FM IF
L3
AM FERRITE-ROD
ANTENNA
(AEP, UK)
(AEP, UK)
(US, Canadian)
TU-DATA, TU-CLK,
TU-CE, TU-COUNT,
TU-MUTE
5-2. BLOCK DIAGRAM – TUNER Section –
Ver 1.1

ZS-X3CP
2020
43RESET
25CD-ON
55VH
91P-CON
57VM
24VM-CONT
SYSTEM CONTROLLER
IC801 (2/2)
+6.2V
REGULATOR
Q306
DC LEVEL
DETECT
Q604
+6.2V
REGULATOR
Q606
+6.2V
REGULATOR
Q305
+3.3V
REGULATOR
Q303, 304
B+ SWITCH
Q301, 302
B+ SWITCH
Q603
DRY BATTERY
SIZE“D”
(IEC DESIGNATION R20)
6PCS. 9V
+3.3V
REGULATOR
IC802
RESET SIGNAL
GENERATOR
IC803
DC IN 9V
J901
–+
CD 6.2V
LED B+
D603, 604
(LCD BACK LIGHT)
AMP B+
B+
CD 3.3V
SW 9V
E. VOL B+
TU 6.2V
LOAD CONTROL
Q601
27TU-ON
MP3-LED
POWER-KEY
KEY1
KEY2
56REG-CHK
26LOAD
POWER
AMP
IC302
: CD PLAY
: TUNER
R-CH
R-CH
L IN L OUT
11 5
POWER
AMP
STANDBY
SWITCH
SP1
(L-CH)
SP2
(R-CH)
J301
(HEADPHONE)
i
STANDBY
7
AF AMP
Q103 8
LOGIC
CONTROL
4 5
7
ELECTRICAL VOLUME
IC301
D101 D201
SW 9V
•R-ch is omitted due to same as L-ch.
•SIGNAL PATH
VIN2 VOUT2
DATA CLOCK
R-CH
MEGA BASS
CONTROL
Q105
D303
MUTING
Q104
TU-L
B
(Page 19)
CD-L
A
(Page 18)
S609 – 616
S601
S602, 603, SW604
D602
MP3
POWER
FM/AM-SHIFT
Q801
Q801, 802
SHIFT CLOCK
Q802
X801
5MHz
X2 X1
44
38 39
TU-DATA
TU-CLK
TU-CE
TU-COUNT
1
2
3
4
(Page 19)
C
TU-MUTE
5
DB0 – DB7
LIQUID CRYSTAL DISPLAY
LCD801
29 – 36
LCD-RESET
19
46
54
53
28
LCD-RS
20
LCD-E
21
LCD-CLK
71
SDA
SCL
5 6
EPROM-SDA EPROM-SCL
EEPROM
IC804
12 11
RV801
(LCD VOLTAGE)
TU-DATA
TU-DATA, TU-CLK,
TU-CE, TU-COUNT,
TU-MUTE
TU-CLK
TU-CE
TU-COUNT
TU-MUTE
MUTING
Q101
R-CH
TU 6.2V
D606
Q605
MUTING
Q102
R-CH
V-CLOCK
94
V-DATA
95
A-MUTE
93
MEGABASS
92
(US, CND)
OPERATE
(AEP, UK)
5-3. BLOCK DIAGRAM – MAIN Section –
Ver 1.1