Sony ZSSN-10 Service manual

ZS-SN10

Batt

lif

SERVICE MANUAL

Ver. 1.2 2005.07

US and foreign patents licensed from Dolby Laboratories.

SPECIFICATIONS

US Model

Canadian Model

E Model

Austr alian Model

Model Name Using Similar Mechanism CFD-E95
Optical Pick-up Block Name KSM-213CDP
Optical Pick-up Name KSS-213C

ery

AUDIO POWER SPECIFICATIONS
(US model only)

POWER OUTPUT AND TOTAL HARMONIC
DISTORTION
With 3.2-ohm loads, both channels driven from
150 - 6,300 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

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 +0/–1 dB

Wow and flutter

Below measurable limit

Radio section

Frequency range
US, CND, E, MX, TW models:

FM: 87.5 - 108 MHz
AM: 530 - 1710 kHz

SP, KR, TH, AUS models:

FM: 87.5 - 108 MHz
AM: 531 - 1611 kHz (9 kHz step)
530 - 1610 kHz (10 kHz step)

IF

FM: 10.7 MHz
AM: 450 kHz

Antennas

FM: Telescopic antenna
AM: Built-in ferrite bar antenna

General

Speaker

Full range: 10 cm (4 in.) dia., 3.2 Ω, cone type (2)

Input

LINE IN jack (stereo minijack):
Minimum input level 330 mV

Outputs

Headphones jack (stereo minijack):
For 16 - 64 Ω impedance headphones

Power output

2.3 W + 2.3 W (at 3.2 Ω, 10 % harmonic
distortion)

Power requirements

For player:
US, CND, E, MX, TW models:
120 V AC, 60 Hz
SP, TH, AUS models:
230 V AC, 50 Hz
KR model:
220 V AC, 60 Hz

9 V DC, 6 size D (R20) batteries
For remote control:
3 V DC, 2 size AAA (R03) batteries

Power consumption

16 W

e

For player:

CD playback

Sony R20P: approx. 2 h
Sony alkaline LR20: approx. 8 h

Radio reception

Sony R20P: approx. 10 h
Sony alkaline LR20: approx. 25 h

Dimensions

Approx. 500 × 145 × 230 mm (w/h/d)

3

(19

/4 × 5 3/4 × 9 1/

Mass

Approx. 3.8 kg (8 lb. 6 oz) (incl. batteries)

Supplied accessories

AC power cord (1) (US, CND, E, MX, TW models)
Mains lead (1) (SP, KR, TH, AUS models)
Remote control (1)
CD-ROM (SonicStage) (1)
SonicStage Installation/Operating Guide (1)

Design and specifications are subject to change without
notice.

• Abbreviation
AUS: Australian model
CND: Canadian model
KR : Korean model
MX : Mexican model
SP : Singapore model
TH : Thai model
TW : Taiwan model

8

inches) (incl. projecting parts)

9-879-649-03

2005G05-1
© 2005.07

PERSONAL AUDIO SYSTEM

Sony Corporation

Personal Audio Group
Published by Sony Engineering Corporation

ZS-SN10

r

CAUTION

Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.

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 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.

TABLE OF CONTENTS

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

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

3. DISASSEMBLY

3-1. Disassembly Flow ........................................................... 6

3-2. Cabinet Top Assy............................................................. 6

3-3. MAIN Board.................................................................... 7

3-4. Cabinet Front Assy .......................................................... 7

3-5. LCD Board ...................................................................... 8

3-6. CD Block Assy ................................................................ 8

3-7. Optical Pick-up (KSS-213C)........................................... 9

3-8. CD Lid............................................................................. 9

4. ELECTRICAL ADJUSTMENTS .......................... 10

5. DIAGRAMS

5-1. Block Diagram – CD Servo Section –............................ 12

5-2. Block Diagram – TUNER Section – .............................. 13

5-3. Block Diagram – MAIN Section –................................ 14

5-4. Printed Wiring Board – CD Board – .............................. 16

5-5. Schematic Diagram – CD Board –................................. 17

5-6. Printed Wiring Board – TUNER Board –....................... 18

5-7. Schematic Diagram – TUNER Board – ......................... 19

5-8. Printed Wiring Boards – MAIN Section – ..................... 20

5-9. Printed Wiring Boards – POWER Section – .................. 21

5-10. Schematic Diagram – MAIN Section (1/2) – ................. 22

5-11. Schematic Diagram – MAIN Section (2/2) – ................. 23

5-12. Printed Wiring Boards – PANEL Section –.................... 24

5-13. Schematic Diagram – PANEL Section –........................ 25

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 manufactur ers’ 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 v oltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-v oltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range are suitable. (See
Fig. A)

To Exposed Metal
Parts on Set

AC

0.15 µF

1.5 k

Ω

Earth Ground

voltmete
(0.75 V)

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

6. EXPLODED VIEWS

6-1. Cabinet Section................................................................ 33

6-2. Cabinet Front Section...................................................... 34

6-3. Cabinet Top Section-1 ..................................................... 35

6-4. Cabinet Top Section-2 ..................................................... 36

6-5. Cabinet Bottom Section................................................... 37

6-6. Optical Pick-up Section (KSM-213CDP) ....................... 38

7. ELECTRICAL PARTS LIST .................................. 39

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 PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS P AR UNE MARQ UE 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 D ANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.

2

SECTION 1

SERVICING NOTES

ZS-SN10

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 pick­up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the lead­free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size)

: LEAD FREE MARK

Unleaded solder has the following characteristics.

• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if

the heated tip is applied for too long, so be careful!

• Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.

• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.

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 S801. (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 S801 as shown in Fig.1.

Note: Do not push the detection lever strongly , or it may be bent or damaged.

3. Press the u button.

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.

S801

Fig.1 Method to push the S801

3

ZS-SN10

Basic Operations

Playing a CD

SECTION 2

GENERAL

3

1, 2

3 Press u (N on the remote) (direct

power-on).
The player plays all the tracks once.

Display
Audio CD

This section is extracted from
instruction manual.

ATRAC CD/MP3 CD*

Connect the supplied AC power cord.

1 Press PUSH Z OPEN/CLOSE to

2 Press PUSH Z OPEN/CLOSE to

open the CD lid and place the CD on
the CD tray.

close the CD lid.

With the label side up

Note

Before playing an ATRAC
CD/MP3 CD, this player
reads all file and group
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.

Tips

•To listen through
headphones, connect the
headphones to the i
(headphones) jack.

•Playback starts from the
track you last stopped
playing (Resume play).
To cancel the resume play
to start play from the
beginning of the first track,
press x in stop mode.

Track number

Playing time

File number

*When playing an MP3 CD, “MP3”

appears in the display.

Use these buttons for additional operations

To Press

adjust the volume VOLUME +*1, – (VOL +*1, – on the

stop playback x
pause playback u*1(X on the remote)

go to the next track >
go back to the .

previous track
*1The button has a tactile dot.

remote)

Press the button again to resume play after
pause.

File name

Playing time

POWER

u

x

VOLUME –, +

–, +

i

>

.

Notes

• If ATRAC3plus files and
MP3 files are recorded on
the same CD, this CD
player plays the
ATRAC3plus first.

• The playback capability of
this CD player may vary
depending on the quality of
the disc and the condition of
the recording device.

• Characters that can be
displayed on this CD player
are listed below.
–A to Z
–a to z
–0 to 9
–! " # $ % & ' ( ) * + , - . / :

; < = > ? @ [ \ ] ^ _ ` { | }
~

If you use other characters
on your computer using
software such as
SonicStage, they are
displayed as “–” on this CD
player.

• On a disc that has
ATRAC3plus/MP3 files, do
not save files in other
formats and do not make
unneccessary groups.

To Press

2

select a group*

remove the CD PUSH Z OPEN/CLOSE*
turn on/off the player POWER

2

This function works for ATRAC CDs/MP3 CDs only.

*
*3Once you open the CD lid, the track to start play will change to

the beginning of the first track.

The structure of ATRAC CDs/MP3 CDs

ATRAC CDs/MP3 CDs consist of “files” and “groups.” A
“file” is equivalent to a “track” of an audio CD. A “group”
is a bundle of files and is equivalent to an “album.”
For MP3 CDs, this CD player recognizes an MP3 folder as
a “group” so that ATRAC CDs and MP3 CDs can be
operated in the same way.
In this manual, we use the word “track” in description of
the operations available for both ATRAC CDs/MP3 CDs
and audio CDs, and the word “file” for the operations
available for ATRAC CDs/MP3 CDs only.

Playing order of ATRAC CDs and MP3 CDs

For ATRAC CDs, files are played in the order selected in
SonicStage.
For MP3 CDs, the playing order may differ depending on
the method used to record MP3 files on the disc. In the
following example, files are played in order of 1 to 7.

Group
File

ATRAC CD

+ to go forward and – to go

backward

MP3 CD

3

Notes on ATRAC CDs

•Maximum number of groups: 255
Maximum number of files: 999

• CD-Rs/CD-RWs recorded in the ATRAC3plus format cannot be
played on your computer.

Notes on MP3 CDs

•Maximum number of groups: 255
Maximum number of files: 511
Maximum directory level: 8

•A group that does not include an MP3 file is skipped.

• Be sure to add the file extension “mp3” to the file name.
However, if you add the file extension “mp3” to a file other than
an MP3 file, the player will not be able to recognize the file
properly.

• This player can play bit rates of 32 to 320 kbps, and sampling
frequencies of 32/44.1/ 48 kHz.

•To compress a source in an MP3 file, we recommend setting the
compression parameters to “44.1 kHz,” “128 kbps,” and
“Constant Bit Rate.”

•To record up to the maximum capacity, set the writing software
to “halting of writing.”

•To record to the maximum capacity at one time up on media that
has nothing recorded on it, set the writing software to “Disc at
Once.”

4

ZS-SN10

Listening to the radio

1 2

Connect the supplied AC power cord.

1 Press RADIO•BAND•AUTO

2 Hold down TUNE + or – until the

PRESET repeatedly until the band
you want appears in the display
(direct power-on).

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, press
TUNE + or – repeatedly to change
the frequency step by step.

Display

Indicates an FM
stereo broadcast

Tip

If the FM broadcast is noisy,
press MODE repeatedly until
“Mono” appears in the
display and radio will play in
monaural.

Use these buttons for additional operations

POWER
VOLUME –, +
MODE

To Press

adjust the volume VOLUME +*, – (VOL +*, – on the

turn on/off the radio POWER
* The button has a tactile dot.

To improve broadcast reception

Reorient the antenna for FM. Reorient the player itself for
AM.

for FM

remote)

for AM

5

ZS-SN10

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

3-1. DISASSEMBLY FLOW

SET

3-2. CABINET TOP ASSY

(Page 6)

SECTION 3

DISASSEMBLY

3-3. MAIN BOARD

(Page 7)

3-4. CABINET FRONT ASSY

(Page 7)

3-5. LCD BOARD

(Page 8)

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

3-2. CABINET TOP ASSY

3

Open the CD lid.

7

three screws
(B3)

3-6. CD BLOCK ASSY

(Page 8)

3-7. OPTICAL PICK-UP

(KSS-213C)
(Page 9)

4

three screws
(B3)

3-8. CD LID

(Page 9)

2

telescopic antenna (ANT1)

5

Lift the handle.

1

screw (M3)

qs

cabinet top assy

qa

flexible flat cable (4 core)
(CN403)

6

two screws
(B3)

0

wire (flat type) (23 core)
(CN102)

8

9

connector

6

3-3. MAIN BOARD

4

flexible flat cable
(11 core) (CN806)

5

flexible flat cable
(11 core) (CN807)

8

MAIN board

3

connector (CN901)

2

connector (CN301)

1

7

two screws
(B2.6)

6

flexible flat cable
(11 core) (CN801)

connector (CN302)

ZS-SN10

3-4. CABINET FRONT ASSY

3

two screws
(B3)

1

connector
(CN323)

4

five screws
(B3)

5

screw (B3)

6

cabinet front assy

2

two screws
(B3)

7

ZS-SN10

3-5. LCD BOARD

6

two screws
(B2.6)

5

four screws
(B2.6)

2

speaker box (L)

7

two screws
(B2.6)

1

four screws
(B3)

3

four screws
(B3)

4

speaker box (R)

3-6. CD BLOCK ASSY

2

CD block assy

8

LCD board

1

four screws

8

3-7. OPTICAL PICK-UP (KSS-213C)

3

sled shaft

5

optical pick-up
(KSS-213C)

1

CD cover

4

flexible flat cable (16 core)

ZS-SN10

3-8. CD LID

2

gear (A)

7

boss

5

9

CD lid

6

claw

8

boss

2

CD spring

1

claw

4

damper

3

screw (B2.6)

9

ZS-SN10

Ver. 1.1

SECTION 4

ELECTRICAL ADJUSTMENTS

TUNER SECTION 0 dB=1 µV

[AM]

Setting:

Function: RADIO
RADIO/BAND, AUTO PRESET button: AM

AM RF signal

generator

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

[FM]

Setting:

Function: RADIO
RADIO/BAND, AUTO PRESET button: FM

FM RF signal

generator

75 kHz frequency
deviation by 1 kHz
signal
Output level:
as low as possible

Put the lead-wire
antenna close to
the set.

set

TUNER board
TP (ANT)

0.01 µF
set

TUNER board
TP (GND)

32

i

level meter

Ω

jack (J301)

level meter

32

Ω

i

jack (J301)

AM IF ADJUSTMENT

Adjust for a maximum reading on level meter

T1 450 kHz

(): Singapore, Korean, Thai and Australian models

AM FREQUENCY COVERAGE ADJUSTMENT

Adjustment Part Frequency Display Reading on Digital Voltmeter

L4 530 kHz (531 kHz) 1.0 ± 0.05 V

Confirmation

+
–

Adjustment Part Frequency Display Reading on Digital Voltmeter

Confirmation 87.5 MHz 1.3 ± 0.3 V

+
–

(): Singapore, Korean, Thai and Australian models

Adjust for a maximum reading on level meter

L3 620 kHz (621 kHz)

CT3 1,400 kHz (1,404 kHz)

Adjust for a minimum reading on level meter

T2 10.7 MHz

FM FREQUENCY COVERAGE ADJUSTMENT

L2 108 MHz 3.0 ± 0.2 V

Adjust for a maximum reading on level meter

L1 87.5 MHz

CT1 108 MHz

1,710 kHz

(1,611 kHz)

AM TRACKING ADJUSTMENT

FM IF ADJUSTMENT

FM TRACKING ADJUSTMENT

5.3 ± 0.7 V (5.2 ± 0.6 V)

Adjustment and Connecting Location: TUNER board

(See page 11)

digital voltmeter

TUNER board

100 k

TP (VT)

TP (GND)

Ω

• Repeat the pr ocedures in each adjustment several times, and

the tracking adjustments should be finally done by the trimmer
capacitors.

• Remove FM antenna in FM adjustment.

10

ZS-SN10

VOLT/DIV: 0.2 V (with the 10: 1 probe in use.)
TIME/DIV: 200 ns

0.5 to 1.1 Vp-p

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

Adjustment and Connecting Location:

– TUNER Board (Component Side) –

L4

AM Frequency Coverage Adjustment

L2

FM Frequency Coverage Adjustment

– TUNER Board (Conductor Side) –

T2 FM IF Adjustment

T1 AM IF Adjustment

L1
CT1

CT3

AM T rac king Adjustment

L3

CD SECTION

FOCUS BIAS CHECK

1. Connect the oscilloscope to TP (RF A CO) and TP (VC) on the
CD board.

2. Insert the disc (PATD-012). (Part No.: 4-225-203-01)

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)

FM T rac king Adjustment

Checking Location:

TP

(VT)

TP

(GND)

TP

(ANT)

– CD Board (Conductor Side) –

TP

(VC)

IC201

TP

(RFACO)

ZS-SN10

1111

ZS-SN10

SECTION 5
DIAGRAMS

5-1. BLOCK DIAGRAM – CD SERVO SECTION –

OPTICAL

PICK-UP BLOCK

(KSM-213CDP)

A

B
C
D
E

F

LD

PD

AUTOMATIC

POWER CONTROL

Q321

57

A

58

B

59

C

RFACO

60

D

50

E

51

F

66

LD

67

PD

70

71

RFACI

AOUT1

AOUT2

XTAI

XTAO

112

117

109

108

X202

16.9344MHz

R-CH

CD-L

A

(Page 14)

M402

(SLED)

M401

(SPINDLE)

2-AXIS

DEVICE

S201

(LIMIT)

39

SSTP

CD DSP

IC201

FOCUS/TRACKING COIL DRIVER,
SLED/SPINDLE MOTOR DRIVER

FCS+

FCS–
TRK+
TRK–

SL+

M

SL–

SP+

M

SP–

12

11
13
14

17

16

CH2OUTF

CH2OUTR
CH1OUTR
CH1OUTF

CH3OUTF

CH3OUTR18

CH4OUTF

CH4OUTR15

IC402

CH2FIN

CH2RIN
CH1RIN

CH1FIN

CH3FIN

CH3RIN 22

OPIN+

OPOUT

CH4IN

89

6

7
5
4

23

2

27
24

45

FFDR

46

FRDR

44

TRDR

43

TFDR

41

SFDR

42

SRDR

38

MDP

DATA

11

CLOK

16

XLAT

SENS 20

26 SCOR56

SCOR

12

DATA2

90

CLOK2

13

XLAT2

14

REQ

IREQ 10

15

ACK

XTACN

7

CD +3.3V

19

DATA

20

CLOK
XLAT55

18

SENS

IDATA2

58

ODATA259

60

CLOK2

61

XLAT2
REQ62

57

IREQ

63

ACK
XTACN67

SYSTEM CONTROLLER

IC801 (1/2)

• R-ch is omitted due to same as L-ch.

• SIGNAL PATH
: CD PLAY

ZS-SN10

MUTE

20

XRST

8

(CD LID OPEN/CLOSE DETECT)

S801

1212

XRST68

M-MUTE66

53 CD-DOOR

5-2. BLOCK DIAGRAM – TUNER SECTION –

ANT1

FM LEAD WIRE

ANTENNA

FM/AM RF AMP, MIX, OSC,

FM/AM IF AMP, DET, MPX

IC1

10

QUAD

T2

FM IFT

ZS-SN10

T2

FM IF

L1

FM RF

CT1, L1

FM TRACKING

L3

AM FERRITE-ROD

ANTENNA

CT3, L3

AM TRACKING

CT1

CT3

D1

D3

(1/2)

FM
RF-IN

2

FM
RF-OUT

24

AM
RF-IN

22

L4

AM FREQUENCY

COVERAGE

L4

AM

OSC

FM

RF AMP

AM

RF AMP

D3

(2/2)

FM

MIX

FM

OSC

AM

MIX

AM

OSC

AM OSC

20 21

FM OSC

BUFFER

BUFFER

MIX-OUT

4 7

T1

AM IFT

T1

AM IF

OSC

-OUT
19

L2

FM FREQUENCY

COVERAGE

L2

FM OSC

D2

CF2

CF4

FM
IF-IN

FM IF

AMP

AM
IF-IN

AM IF

6

AMP

FM

DET

AM
DET

IF

BUFFER

IF-OUT

17 18

AF

BUFFER

LEVEL

DET

DET

-OUT

ST

IND

ST-IND

MPX

-IN

AF

16

15

AMP

MPX

LPF1/BAND

LPF2/MO-ST

13

14

MUTE

STEREO/

MONO,
FM/AM

L-OUT

R-OUT

12

11

R-CH

TU-L

B

(Page 14)

• R-ch is omitted due to same as L-ch.

• SIGNAL PATH
: FM
: AM

X1

75kHz

VT B+

LOW-PASS

FILTER

6

PD

LP-OUT

MW/LW

XOUT

20

19

XIN

REFERENCE

DIVIDER

FM/AM PLL

IC2

LOW-PASS

FILTER

UNLOCK

DETECT

LP-IN

PHASE

DETECTOR/

CHARGE PUMP

12 BIT

PROGRAMMABLE

DIVIDER

SWALLOW

COUNTER

111218

FM IN

AM IN

1/2

SHIFT REGISTER & LATCH

10 9

IF IN

UNIVERSAL

COUNTER

ST-IND

BAND

7

BAND

13817 16

MO/ST

CCB

INTERFACE

DI

2

CL

3

CE

1

DO

4

MUTING

Q808

R MUTING

R DATA

R CLOCK

R CE

R COUNT

R DATA, R CLOCK, R CE,

R COUNT, R MUTING

C

(Page 14)

ZS-SN10

1313

ZS-SN10

5-3. BLOCK DIAGRAM – MAIN SECTION –

C

(Page 13)

(Page 12)

(Page 13)

R DATA, R CLOCK,
R CE, R COUNT,
R MUTING

A

B

R DATA
R CLOCK
R CE
R COUNT
R MUTING

CD-L

TU-L

28
29
30
27
31

J322

LINE IN

R-DATA
R-CLOCK
R-CE
R-COUNT
R-MUTE

X1

83 82

R-CH

• R-ch is omitted due to same as L-ch.

• SIGNAL PATH

: FM

6

CD-L

95

LCD-E

94

LCH

LCD-RES

LCD-RW

93

16

MEGA BASS

CONTROL

D301

Q101

15

MEGABASS

R-CH

MUTING

Q121

21

A-MUTE

R-CH

CD +2.5V

4

SEL L

8

RA-L

R-CH

SYSTEM CONTROLLER

IC801 (2/2)

78

SHIFT

X1A

79 80

X0

X0A

10

100

LI-L

14 13

9

BL

SI

SC

10

VOL-CLK

VOL-DATA

LCD-DB0 – LCD-DB7

85 – 92

1

R-IN

INPUT SELECT,

ELECTRICAL VOLUME,

SURROUND/TONE CONTROL

IC301

LCD-RS

96

3.3V-CHECK

BUCKUP-ON

CD3.3V-ON

POWER

AMP

IC304

REGULATOR

43

26

25

+2.5V

IC202

CD +3.3V CD +6V

DC/DC
CONVERTER
IC901, Q956

B+ SWITCH

Q813

RE B+

SYS +3.3V

B+ SWITCH

Q804, 806

REGULATOR

RMC +5V

+6V

Q954

D401
OPR/

BATT

SP101
(L-CH)

SP201

(R-CH)

SYS +3.3V

J301

i

D801

SW +9V

B+ SWITCH
Q951 – 953

: CD PLAY

AMP B+

RECT

D901 – 904

F902

T901

POWER

TRANSFORMER

J901

AC IN

DRY BATTERY

SIZE "D"

(IEC DESIGNATION R20)

6PCS. 9V

Q802

X801

4.19MHz

Q801, 802

SHIFT CLOCK

Q801

X802

32.768kHz

LED DRIVE

Q803

D402

(LCD BACK LIGHT)

LIQUID CRYSTAL DISPLAY

LCD401

REMOTE CONTROL

EEPROM

IC804

(JOG)

SYS +3.3V

S402 – 407

S410 – 414, 425

S418 – 424

RECEIVER

IC401

ROTARY

ENCODER

WAKE UP

SWITCH

SDA
SCL

S401

Q807

22

P-CON

45

VH

64 REMOTE

5
6

EEP-SDA

8

EEP-SCL

7

98 JOG-A

99 JOG-B

52 WP

41 KEY0

39 KEY1

40 KEY2

VOL-CHECK

VH-CONT

VM

VM-CONT

69

70LOAD

46

32

44

24TU-ON

77RESET

54AC-IN

DC LEVEL

DETECT

Q821, 822

DC LEVEL

DETECT

Q811, 812

AC CHECK

Q805

E.VOL B+

RADIO +6V

LOAD CONTROL

SWITCH

Q823, 824

B+ SWITCH

Q809, 810

RESET SIGNAL

GENERATOR

IC803

AU +6V

SYS +3.3V

+6V

REGULATOR

Q955

+3.3V

REGULATOR

IC802

ZS-SN10

1414

ZS-SN10

Ver. 1.1

• Note for Printed Wiring Boards and Schematic Diagrams

Note on Printed Wiring Board:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

• W : indicates side identified with part number.

f

•

• : Pattern from the side which enables seeing.

Caution:
Pattern face side: Parts on the pattern f ace side seen from
(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.

: internal component.

(The other layers' patterns are not indicated.)

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in Ω and 1/
specified.

f : internal component.

•

• C : panel designation.

Note:

The components identi­fied by mark 0 or dot­ted line with mark 0 are
critical for safety.
Replace only with part
number specified.

• A : B+ Line.

• H : adjustment for repair.

• Power voltage is dc 4.5V and fed with regulated dc power

supply from pin 1 and 2 of CN902 on the BATTERY 1
board, and from pin 3 and 2 as well.
no mark : FM
〈〈 〉〉 : AM
(): CD PLAY

• Voltages are tak en with a V OM (Input impedance 10 MΩ).
Voltage v ariations may be noted due to normal production
tolerances.

• Waveforms are taken with a oscilloscope.
Voltage v ariations may be noted due to normal production
tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F : FM
f : AM
J : CD PLAY
j : LINE IN

• Abbreviation
AUS: Australian model
CND : Canadian model
KR : Korean model
MX : Mexican model
SP : Singapore model
TH : Thai model
TW : Taiwan model

4

W or less unless otherwise

Note:

Les composants identifiés
par une marque 0 sont cri-
tiques pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.

• Circuit Boards Location

CONTROL (1) board

CD board

CONTROL (2) board

LCD board

POWER board

MAIN board

ZS-SN10

TUNER board

BATTERY 1 board

H/P board

BATTERY 2 board

1515