Read Sony ZS-M35 (serv.man2) Service Manual online
– 1 –
Sony Corporation
Personal Audio Group
Published by Sony Engineering Corporation
ZS-M35
SERVICE MANUAL
PERSONAL MINIDISC SYSTEM
US Model
Canadian Model
Taiwan Model
CD
Model Name Using Similar Mechanism
PMC-20
Section
CD Mechanism Type
KSM-213CDM
Optical Pick-up Name
KSS-213C
MD
Model Name Using Similar Mechanism
PMC-MD55
Section
MD Mechanism Type
MDM-5GA
Base Unit Name
MBU-5A
Optical Pick-up Name
KMS-260B
U.S. and foreign patents licensed from Dolby Laboratories
Licensing Corporation.
Licensing Corporation.
CD player section
System
System
Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wave length: 785 nm
Emission duration: Continuous
Laser output: Less than 44.6
Wave length: 785 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.)
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 programme positions
2
Frequency response
20 - 20,000 Hz +1/–2 dB
Wow and flutter
Below measurable limit
Radio section
Frequency range
Frequency range
FM: 87.5 - 108 MHz
AM: 530 - 1,710 kHz
AM: 530 - 1,710 kHz
Antennas
FM: Telescopic antenna
AM: AM loop antenna
AM: AM loop antenna
SPECIFICATIONS
MD player section
System
System
Minidisc digital audio system
Disc
MiniDisc
Laser diode properties
Material: GaAlAs
Wave length: 785 nm
Emission duration: Continuous
Laser output: Less than 44.6
Wave length: 785 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.)
about 200 mm from the objective lens surface on
the optical pick-up block with 7 mm aperture.)
Recording/playback time
Stereo recording:
Maximum 80 minutes (with MDW-80)
Monaural recording:
Maximum 160 minutes (with MDW-80)
Maximum 80 minutes (with MDW-80)
Monaural recording:
Maximum 160 minutes (with MDW-80)
Revolutions
400 rpm to 900 rpm (CLV)
Error correction
Advanced Cross Interleave Reed Solomon Code
(ACIRC)
(ACIRC)
Sampling frequency
44.1 kHz
– Continued on next page –
AUDIO POWER SPECIFICATIONS (US model)
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION
With 4-ohm loads, both channels driven from
150 - 10,000 Hz; rated 4 W per channel-
minimum RMS power, with no more than 10%
total harmonic distortion in AC operation.
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION
With 4-ohm loads, both channels driven from
150 - 10,000 Hz; rated 4 W per channel-
minimum RMS power, with no more than 10%
total harmonic distortion in AC operation.
Ver. 1.3 2005.09
9-927-183-34
2005I04-1
© 2005.09
– 2 –
Coding
Adaptive TRansform Acoustic Coding (ATRAC)
Modulation system
EFM (Eight-to-Fourteen Modulation)
Number of programme positions
2 stereo programme positions
Frequency response
20 - 20,000 Hz +1/–2 dB
Signal-to-noise ratio
Over 80 dB (during playback)
Wow and flutter
Below measurable limit
General
Speaker
Speaker
Full-range: 8 cm (3 in.) dia., 4 ohms, cone type (2)
Inputs
LINE IN (stereo minijack): Sensitivity 436 mV/
870 mV
870 mV
Outputs
Headphones jack (stereo minijack) (1):
For 32 ohms impedance headphones
For 32 ohms impedance headphones
Power output (excluding US model)
5 W + 5 W (at 4 ohms, 10 % harmonic distortion
in AC operation)
in AC operation)
Power requirements
For personal minidisc system:
120 V AC, 60 Hz
For back-up memory:
4.5 V DC, 3 size AA (R6) batteries
For remote control:
3 V DC, 2 size AA (R6) batteries
120 V AC, 60 Hz
For back-up memory:
4.5 V DC, 3 size AA (R6) batteries
For remote control:
3 V DC, 2 size AA (R6) batteries
Power consumption
24 W
Dimensions (incl. projecting parts)
Approx. 498.5
× 173.5 × 227 mm (w/h/d)
(17
3
/
4
× 6
1
/
2
× 9
1
/
2
inches)
Mass
Approx. 5.2 kg (13 lb. 4 oz)
Supplied accessories
AC power cord (1)
Remote control (RMT-CM35A) (1)
AM loop antenna (1)
Remote control (RMT-CM35A) (1)
AM loop antenna (1)
Design and specifications are subject to change
without notice.
without notice.
To Exposed Metal
Parts on Set
Parts on Set
0.15µF
1.5k
Ω
AC
voltmeter
(0.75V)
voltmeter
(0.75V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
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.
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.
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.
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 2V AC range are suitable. (See Fig. A)
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 2V AC range are suitable. (See Fig. A)
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.
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 PAR UNE MARQUE 0 SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE
FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE
FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
– 3 –
1. SERVICING NOTES
1-1. Notes on Handling the Optical Pick-up Block or Base Unit .. 4
1-2. Notes on Laser Diode Emission Check ............................... 4
1-3. Notes on Chip Component Replacement ............................ 4
1-4. Flexible Circuit Board Repairing ........................................ 4
1-5. Chuck Plate Jig on Repairing .............................................. 4
1-6. Demonstration ..................................................................... 4
1-7. Checking the Laser Diode and Focus Search Operation ..... 4
1-8. Jig for Checking BD Board Waveform ............................... 5
1-9. Checks Prior to Parts Replacement and Adjustments ......... 6
1-10. Change of Pulley ................................................................. 6
1-2. Notes on Laser Diode Emission Check ............................... 4
1-3. Notes on Chip Component Replacement ............................ 4
1-4. Flexible Circuit Board Repairing ........................................ 4
1-5. Chuck Plate Jig on Repairing .............................................. 4
1-6. Demonstration ..................................................................... 4
1-7. Checking the Laser Diode and Focus Search Operation ..... 4
1-8. Jig for Checking BD Board Waveform ............................... 5
1-9. Checks Prior to Parts Replacement and Adjustments ......... 6
1-10. Change of Pulley ................................................................. 6
2. GENERAL
Playing a CD ....................................................................... 7
Recording a whole CD ........................................................ 7
Playing an MD ..................................................................... 8
Listening to the radio ........................................................... 8
Recording a whole CD ........................................................ 7
Playing an MD ..................................................................... 8
Listening to the radio ........................................................... 8
3. DISASSEMBLY
3-1. Cabinet (Rear) Assy ............................................................ 9
3-2. Power Board ........................................................................ 9
3-3. Cabinet (Upper) Assy ........................................................ 10
3-4. MD Block Assy ................................................................. 10
3-5. Tuner Board ....................................................................... 11
3-6. Jack Board ......................................................................... 11
3-7. LED Board ........................................................................ 12
3-8. Key Board ......................................................................... 12
3-9. Top Board .......................................................................... 13
3-10. FL Board ........................................................................... 13
3-11. Main board ........................................................................ 14
3-12. CD Board .......................................................................... 14
3-13. CD Mechanism Block ....................................................... 15
3-14. DG Board .......................................................................... 15
3-15. Plate (Front), Shield .......................................................... 16
3-16. MD Mechanism Block-1 (MDM-5GA) ............................ 16
3-17. MD Mechanism Block-2 (Slider (Cam) Assy) ................. 17
3-18. MD Mechanism Block-3 (BD Board) ............................... 18
3-19. MD Mechanism Black-4 (SW Board) ............................... 18
3-2. Power Board ........................................................................ 9
3-3. Cabinet (Upper) Assy ........................................................ 10
3-4. MD Block Assy ................................................................. 10
3-5. Tuner Board ....................................................................... 11
3-6. Jack Board ......................................................................... 11
3-7. LED Board ........................................................................ 12
3-8. Key Board ......................................................................... 12
3-9. Top Board .......................................................................... 13
3-10. FL Board ........................................................................... 13
3-11. Main board ........................................................................ 14
3-12. CD Board .......................................................................... 14
3-13. CD Mechanism Block ....................................................... 15
3-14. DG Board .......................................................................... 15
3-15. Plate (Front), Shield .......................................................... 16
3-16. MD Mechanism Block-1 (MDM-5GA) ............................ 16
3-17. MD Mechanism Block-2 (Slider (Cam) Assy) ................. 17
3-18. MD Mechanism Block-3 (BD Board) ............................... 18
3-19. MD Mechanism Black-4 (SW Board) ............................... 18
4. TEST MODE
4-1. MD section ........................................................................ 19
5. ELECTRICAL ADJUSTMENTS
5-1. Tuner section ..................................................................... 22
5-2. MD section ........................................................................ 24
5-3. CD section ......................................................................... 31
5-2. MD section ........................................................................ 24
5-3. CD section ......................................................................... 31
TABLE OF CONTENTS
6. DIAGRAMS
6-1. IC Pin Function Descriptions ............................................ 33
6-2. Circuit Boards Location .................................................... 42
6-3. Block Diagram –Tuner Section– ....................................... 43
6-4. Block Diagram –MD Section– .......................................... 46
6-5. Block Diagram –CD Section– ........................................... 49
6-6. Block Diagram –Audio Section– ...................................... 51
6-7. Schematic Diagram –CD Section (1/2)– ........................... 53
6-8. Schematic Diagram –CD Section (2/2)– ........................... 55
6-9. Printed Wiring Boards –CD Section– ............................... 57
6-10. Printed Wiring Boards –Tuner Section– ........................... 59
6-11. Schematic Diagrams –Tuner Section– .............................. 61
6-12. Printed Wiring Boards –BD Section– ............................... 63
6-13. Schematic Diagram –BD Section (1/2)– ........................... 65
6-14. Schematic Diagrams –BD Section (2/2)– ......................... 67
6-15. Schematic Diagram –DG Section– ................................... 69
6-16. Schematic Diagram –DG Section– ................................... 71
6-17. Printed Wiring Board –DG Section– ................................. 73
6-18. Printed Wiring Board –Main Section– .............................. 75
6-19. Schematic Diagram –Main Section (1/3)– ........................ 77
6-20. Schematic Diagram –Main Section (2/3)– ........................ 79
6-21. Schematic Diagram –Main Section (3/3)– ........................ 81
6-22. Printed Wiring Boards –Panel Section– ............................ 83
6-23. Schematic Diagrams –Panel Section– ............................... 85
6-24. Printed Wiring Boards –Switch Section– .......................... 87
6-25. Schematic Diagrams –Switch Section– ............................ 89
6-26. Printed Wiring Boards –Power Supply Section– .............. 91
6-27. Schematic Diagrams –Power Supply Section– ................. 93
6-28. IC Block Diagrams ............................................................ 95
6-2. Circuit Boards Location .................................................... 42
6-3. Block Diagram –Tuner Section– ....................................... 43
6-4. Block Diagram –MD Section– .......................................... 46
6-5. Block Diagram –CD Section– ........................................... 49
6-6. Block Diagram –Audio Section– ...................................... 51
6-7. Schematic Diagram –CD Section (1/2)– ........................... 53
6-8. Schematic Diagram –CD Section (2/2)– ........................... 55
6-9. Printed Wiring Boards –CD Section– ............................... 57
6-10. Printed Wiring Boards –Tuner Section– ........................... 59
6-11. Schematic Diagrams –Tuner Section– .............................. 61
6-12. Printed Wiring Boards –BD Section– ............................... 63
6-13. Schematic Diagram –BD Section (1/2)– ........................... 65
6-14. Schematic Diagrams –BD Section (2/2)– ......................... 67
6-15. Schematic Diagram –DG Section– ................................... 69
6-16. Schematic Diagram –DG Section– ................................... 71
6-17. Printed Wiring Board –DG Section– ................................. 73
6-18. Printed Wiring Board –Main Section– .............................. 75
6-19. Schematic Diagram –Main Section (1/3)– ........................ 77
6-20. Schematic Diagram –Main Section (2/3)– ........................ 79
6-21. Schematic Diagram –Main Section (3/3)– ........................ 81
6-22. Printed Wiring Boards –Panel Section– ............................ 83
6-23. Schematic Diagrams –Panel Section– ............................... 85
6-24. Printed Wiring Boards –Switch Section– .......................... 87
6-25. Schematic Diagrams –Switch Section– ............................ 89
6-26. Printed Wiring Boards –Power Supply Section– .............. 91
6-27. Schematic Diagrams –Power Supply Section– ................. 93
6-28. IC Block Diagrams ............................................................ 95
7. EXPLODED VIEWS
7-1. Cabinet (Rear) Section .................................................... 101
7-2. Cabinet (Front) Section ................................................... 102
7-3. Cabinet (Upper) Section .................................................. 103
7-4. MD Block Section ........................................................... 104
7-5. MD Mechanism Section (MDM-5GA) .......................... 105
7-6. MD Base unit Section (MBU-5A) ................................. 106
7-7. Optical Pick-up Section (KSM-213CDM) ...................... 107
7-2. Cabinet (Front) Section ................................................... 102
7-3. Cabinet (Upper) Section .................................................. 103
7-4. MD Block Section ........................................................... 104
7-5. MD Mechanism Section (MDM-5GA) .......................... 105
7-6. MD Base unit Section (MBU-5A) ................................. 106
7-7. Optical Pick-up Section (KSM-213CDM) ...................... 107
8. ELECTRICAL PARTS LIST
.................................... 108
– 4 –
SECTION 1
SERVICING NOTES
This Compact Disc player
is classified as a CLASS 1
LASER product.
The CLASS 1 LASER
PRODUCT label is located
on the bottom exterior.
is classified as a CLASS 1
LASER product.
The CLASS 1 LASER
PRODUCT label is located
on the bottom exterior.
1-1. NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
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.
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.
1-2. 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.
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.
1-3. NOTES ON CHIP COMPONENT REPLACEMENT
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
1-4. 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.
1-5. CHUCK PLATE JIG ON REPAIRING
On repairing CD section, playing a disc without the CD lid, use
Chuck Plate Jig.
• Code number of Chuck Plate Jig: X-4918-255-1
Chuck Plate Jig.
• Code number of Chuck Plate Jig: X-4918-255-1
1-6. DEMONSTRATION
This set enters the demonstration mode about 10 seconds after the
power cord is connected. The demonstration displays such as
“DEMONSTRATION MODE” and “CREATE YOUR ORIGINAL
MD” then appears.
When no operation is entered for one minute after the [POWER]
button is turned on, the demonstration mode is also entered.
To release the demonstration mode, set the timer in this set or press
and hold down the [NO/CANCEL] button for about 2 seconds.
power cord is connected. The demonstration displays such as
“DEMONSTRATION MODE” and “CREATE YOUR ORIGINAL
MD” then appears.
When no operation is entered for one minute after the [POWER]
button is turned on, the demonstration mode is also entered.
To release the demonstration mode, set the timer in this set or press
and hold down the [NO/CANCEL] button for about 2 seconds.
1-7. CHECKING THE LASER DIODE AND FOCUS
SEARCH OPERATION
1. Turn on the POWER and open the CD cover.
2. As shown below, push S402 (CD DOOR) with a screwdriver or
2. As shown below, push S402 (CD DOOR) with a screwdriver or
other tool.
3. Press the CD button.
4. Check the objective lens to make sure that the laser diode is
4. Check the objective lens to make sure that the laser diode is
emitting light. If not so, the auto power control circuit or optical
pickup would be damaged.
Verify that the objective lens moves vertically three times for
focus search.
pickup would be damaged.
Verify that the objective lens moves vertically three times for
focus search.
S402
CAUTION
Use of controls or adjustments or performance of proce-
dures other than those specified herein may result in haz-
ardous radiation exposure.
dures other than those specified herein may result in haz-
ardous radiation exposure.
