ZS-Y3 - Sony Audio Service Manual (repair manual)

zs-y3 service manual
Model
ZS-Y3
Pages
46
Size
2.88 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
zs-y3.pdf
Date

Read Sony ZS-Y3 Service Manual online

SERVICE MANUAL
PERSONAL AUDIO SYSTEM
US Model
ZS-Y3
Ver. 1.1  2006.01
9-879-392-02
2006A05-1
© 2006.01
Sony Corporation
Personal Audio Division
Published by Sony Techno Create Corporation
Model Name Using Similar Mechanism
ZS-X1
Optical Pick-up Block Name
KSM-213RAP
Optical Pick-up Name
KSS-213R
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION
With 3.2-ohm loads, both channels driven
from 100 - 10,000 Hz; rated 1.7 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  W
(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
Antennas
FM: Telescopic antenna
AM: Built-in ferrite bar antenna
General
Speaker
Main speaker: 8 cm ( 3 
1
4
in.) dia., 3.2 ohms,
cone type (2)
Outputs
Headphones jack (stereo minijack)
For 16 - 64 ohms impedance headphones
Power output
2.3 W + 2.3 W  (at 3.2 ohms, 10% harmonic
distortion)
Power requirements
For player:
120V AC, 60 Hz
9 V DC, 6 size C (R14) batteries
For remote control:
3 V DC, 2 size AAA (R03) batteries
Power consumption
16 W
Battery life
For player:
CD playback
Sony R14P: approx. 1.5 h
Sony alkaline LR14: approx. 8 h
Radio reception
Sony R14P: approx. 6 h
Sony alkaline LR14: approx. 20 h
Dimensions
Approx. 455 
× 214 × 180 mm  (w/h/d)
(18
× 8 
1
/
2
× 7 
1
/
8
 inches) (incl. projecting parts)
Mass
Approx. 3.5 kg (7 lb. 11 oz) (incl. batteries)
Supplied accessory
AC power cord (1)
Remote control (1)
Design and specifications are subject to change
without notice.
ZS-Y3
2
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-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.
About CD-Rs/CD-RWs
This player can play CD-Rs/CD-RWs
recorded in the CD-DA 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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
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.
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” indication
is 0.75 V, so analog meters must have an accurate low-voltage
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)
Fig. A.
Using an AC voltmeter to check AC leakage.
1.5 k
0.15 
µ
F
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
TABLE OF CONTENTS
1.
SERVICING NOTES
................................................
3
2.
GENERAL
...................................................................
5
3.
DISASSEMBLY
3-1.
Disassembly Flow ...........................................................
6
3-2.
Cabinet (Rear) Assy .........................................................
7
3-3.
Cabinet (Upper) Block ....................................................
7
3-4.
Chassis Assy ....................................................................
8
3-5.
CD Block Assy ................................................................
8
3-6.
LCD Board ......................................................................
9
4.
ELECTRICAL ADJUSTMENTS
.......................... 10
5.
DIAGRAMS
5-1.
Block Diagram  – CD Servo Section – ............................ 15
5-2.
Block Diagram  – TUNER Section – .............................. 16
5-3.
Block Diagram  – MAIN Section – ................................. 17
5-4.
Printed Wiring Board  – CD Board – .............................. 18
5-5.
Schematic Diagram  – CD Board –
............................. 19
5-6.
Printed Wiring Board  – TU Board – ............................... 20
5-7.
Schematic Diagram  – TU Board – ................................. 21
5-8.
Printed Wiring Boards  – MAIN Section – ..................... 23
5-9.
Schematic Diagram  – MAIN Section (1/2) – ................. 24
5-10. Schematic Diagram  – MAIN Section (2/2) – ................. 25
5-11. Printed Wiring Boards  – KEY Section – ........................ 26
5-12. Schematic Diagram  – KEY Section – ............................ 27
5-13. Printed Wiring Boards  – POWER Section – .................. 28
5-14. Schematic Diagram  – POWER Section – ...................... 29
6.
EXPLODED VIEWS
6-1.
Cabinet Rear Section ....................................................... 34
6-2.
Cabinet Front Section ...................................................... 35
6-3.
Chassis Section ................................................................ 36
6-4.
CD Lid Section ................................................................ 37
6-5.
Optical Pick-up Section (KSM-213RAP) ....................... 38
7.
ELECTRICAL PARTS LIST
.................................. 39
3
ZS-Y3
SECTION  1
SERVICING  NOTES
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 pick-
up 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 lead-
free 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.
NOTES  ON  HANDLING  THE  OPTICAL  PICK-UP
BLOCK  OR  BASE  UNIT
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 S418. (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 S418 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.
Fig.1 Method to push the S418
2
1
S418
4
ZS-Y3
H/P board
MAIN board
TU board
HARNESS  SETTING
Page of 46
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Here you can read online and download Sony ZS-Y3 Service Manual in PDF. ZS-Y3 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony ZS-Y3 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.