Read Sony HCD-LS1 Service Manual online
SERVICE MANUAL
COMPACT DISC RECEIVER
SPECIFICATIONS
HCD-LS1
US Model
Canadian Model
AEP Model
UK Model
E Model
HCD-LS1 is the Amplifier, CD player and
Tuner section in CMT-LS1.
Tuner section in CMT-LS1.
– Continued on next page –
CD player section
System
Compact disc and digital audio
system
system
Laser
Semiconductor laser (
λ
=780 nm)
Emission duration: continuous
Laser output
Max. 44.6
µ
W*
*This output is the value measured
at a distance of 200 mm from the
objective lens surface on the
Optical Pick-up Block with 7 mm
aperture.
at a distance of 200 mm from the
objective lens surface on the
Optical Pick-up Block with 7 mm
aperture.
Frequency response
20 Hz – 20,000 Hz (
±
3.0 dB)
Amplifier section
For the U.S. model
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
With 4 ohm loads both channels driven, from 120 –
10,000 Hz; rated 10 watts per channel minimum
RMS power, with no more than 10% total
harmonic distortion from 250 milliwatts to rated
output.
DISTORTION:
With 4 ohm loads both channels driven, from 120 –
10,000 Hz; rated 10 watts per channel minimum
RMS power, with no more than 10% total
harmonic distortion from 250 milliwatts to rated
output.
North American model:
Continuous RMS power output (Reference)
16 + 16 watts
(4 ohms at 1 kHz, 10% THD)
(4 ohms at 1 kHz, 10% THD)
European model:
DIN power output (Rated) 11 + 11 watts
(4 ohms at 1 kHz, DIN)
Continuous RMS power output (Reference)
16 + 16 watts
(4 ohms at 1 kHz, 10% THD)
(4 ohms at 1 kHz, 10% THD)
Other models:
DIN power output (Rated) 11 + 11 watts
(4 ohms at 1 kHz, DIN, 240 V)
11 + 11 watts
(4 ohms at 1 kHz, DIN, 220 V)
11 + 11 watts
(4 ohms at 1 kHz, DIN, 220 V)
Continuous RMS power output (Reference)
16 + 16 watts
(4 ohms at 1 kHz, 10% THD,
240 V)
16 + 16 watts
(4 ohms at 1 kHz, 10% THD,
220 V)
(4 ohms at 1 kHz, 10% THD,
240 V)
16 + 16 watts
(4 ohms at 1 kHz, 10% THD,
220 V)
Inputs
TAPE IN (stereo mini jack):
voltage 250 mV, impedance
47 kilohms
voltage 250 mV, impedance
47 kilohms
Outputs
TAPE OUT (stereo mini jack):
1Vrms at CD Full Bit Play,
impedance 1 kilohm
CD OUT: Optical
PHONES (stereo mini jack):
accepts headphones of 8 ohms or
more
SPEAKER: speaker system
4 ohms
1Vrms at CD Full Bit Play,
impedance 1 kilohm
CD OUT: Optical
PHONES (stereo mini jack):
accepts headphones of 8 ohms or
more
SPEAKER: speaker system
4 ohms
Model Name Using Similar Mechanism
NEW
CD Mechanism Type
HG-1
Optical Pick-up Name
KSS-540A
9-929-063-12
Sony Corporation
2002K0500-1
Home Audio Company
C
2002.11
Published by Sony Engineering Corporation
Ver 1.1 2002.11
2
TABLE OF CONTENTS
1.
SERVICING NOTES
...............................................
3
2.
GENERAL
...................................................................
5
3.
DISASSEMBLY
.........................................................
7
4.
ELECTRICAL ADJUSTMENT
............................ 19
5.
DIAGRAMS
5-1. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 21
5-2. Printed Wiring Board – CD Section – ........................... 22
5-3. Schematic Diagram – CD Section (1/3) – ..................... 23
5-4. Schematic Diagram – CD Section (2/3) – ..................... 24
5-5. Schematic Diagram – CD Section (3/3) – ..................... 25
5-6. Printed Wiring Board – Main Section – ........................ 26
5-7. Schematic Diagram
5-3. Schematic Diagram – CD Section (1/3) – ..................... 23
5-4. Schematic Diagram – CD Section (2/3) – ..................... 24
5-5. Schematic Diagram – CD Section (3/3) – ..................... 25
5-6. Printed Wiring Board – Main Section – ........................ 26
5-7. Schematic Diagram
– MAIN Section – ........................................................... 27
5-8. Printed Wiring Boards
– AMP/RELAY/JACK Board – ...................................... 28
5-9. Schematic Diagram
– AMP/RELAY/JACK Board – ...................................... 29
5-10. Printed Wiring Boards – Panel Section (1/2) – ............. 30
5-11. Schematic Diagram – Panel Section (1/2) – .................. 31
5-12. Printed Wiring Boards – Panel Section (2/2) – ............. 32
5-13. Schematic Diagram – Panel Section (2/2) – .................. 32
5-14. Printed Wiring Boards
5-11. Schematic Diagram – Panel Section (1/2) – .................. 31
5-12. Printed Wiring Boards – Panel Section (2/2) – ............. 32
5-13. Schematic Diagram – Panel Section (2/2) – .................. 32
5-14. Printed Wiring Boards
– POWER SUPPLY Section – ....................................... 34
5-15. Schematic Diagram – POWER SUPPLY Section – ....... 35
6.
EXPLODED VIEWS
................................................ 37
7.
ELECTRICAL PARTS LIST
............................... 43
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.
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
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 PUB-
LISHED BY SONY.
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
Desktop stand
Dimensions (w/h/d)
184
×
218
×
140 mm
Mass
Approx. 0.5 kg
Wall hanging adapter
Dimensions (w/h/d)
180
×
220
×
39 mm
Mass
Approx. 0.5 kg
Wall hanging bracket
Dimensions (w/h/d)
180
×
220
×
12 mm
Mass
Approx. 0.4 kg
General
Power requirements
North American model:
North American model:
120 V AC, 60 Hz
European model:
230 V AC, 50/60 Hz
Other models:
220 – 240 V AC, 50/60 Hz
Power consumption
25 W
Dimensions
192
×
295
×
150 mm
(w/h/d, incl. projecting parts,
controls and desktop stand)
controls and desktop stand)
Mass
Approx. 4.0 (with Desktop
stand) kg
stand) kg
Supplied accessories
Remote commander (1)
AM loop antenna (1)
FM wire antenna (1)
Desktop stand (1)
Wall hanging adapter (1)
Wall hanging bracket (1)
Screws for stand or adapter
M4
AM loop antenna (1)
FM wire antenna (1)
Desktop stand (1)
Wall hanging adapter (1)
Wall hanging bracket (1)
Screws for stand or adapter
M4
×
14 (4)
Dust caps (3)
Designs and specifications are subject to change
without notice.
without notice.
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
North American model:
North American model:
87.5 – 108.0 MHz (100 kHz step)
Other models:
87.5 – 108.0 MHz (50 kHz step)
Antenna
FM lead antenna
Antenna terminals
75 ohms unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
North American model:
North American model:
530 – 1,710 kHz
(with the interval set at 10 kHz)
531 – 1,710 kHz
(with the interval set at 9 kHz)
(with the interval set at 10 kHz)
531 – 1,710 kHz
(with the interval set at 9 kHz)
European model:
531 – 1,602 kHz
(with the interval set at 9 kHz)
(with the interval set at 9 kHz)
Other models:
531 – 1,602 kHz
(with the interval set at 9 kHz)
530 – 1,710 kHz
(with the interval set at 10 kHz)
(with the interval set at 9 kHz)
530 – 1,710 kHz
(with the interval set at 10 kHz)
Antenna
AM loop antenna
Intermediate frequency
450 kHz
3
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.
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.
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.
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.
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.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
BLOCK OR BASE UNIT
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.
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
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” 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 V AC range are suit-
able. (See Fig. A)
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 V AC range are suit-
able. (See Fig. A)
Fig. A.
Using an AC voltmeter to check AC leakage.
1.5 k
Ω
0.15
µ
F
AC
voltmeter
(0.75 V)
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
other than those specified herein may result in hazardous ra-
diation exposure.
4
DISC EJECTION IN EMERGENCY
In case of emergency, remove the discs inside the Mechanism Ass’y
(CD Changer) as follows:
(1) Disconnect the power of the Main Unit.
(2) Remove the Mechanism Ass’y. Refer to item
(3) Remove two top cover fastening screws at the rear of the
(CD Changer) as follows:
(1) Disconnect the power of the Main Unit.
(2) Remove the Mechanism Ass’y. Refer to item
(3) Remove two top cover fastening screws at the rear of the
Mechanism Ass’y, and take off the Top Cover HS Ass’y. Refer
to Fig. A.
to Fig. A.
(4) Remove the left side adhesive label (Dust Seal EMA SL) on
the left side of the Mechanism Ass’y. Refer to Fig. A.
Note:
Carefully remove it since it is used again later.
(5) Turn the Emergency Gear SL up or down until the disc lock
sleeve SL is lowered as shown in Fig. B.
Caution:
Never use nail when turning the Emergency Gear
SL. Otherwise, the gear tooth may be broken.
SL. Otherwise, the gear tooth may be broken.
(6) Raise the front section of the Mechanism Ass’y as illustrated
in Fig. B. Then carefully spread the Loading L/R MF Ass’y so
that the disc drops into the Stocker.
that the disc drops into the Stocker.
(7) While keeping the Loading L/R MF Ass’y spread, remove the
discs.
Note:
When removing the discs, take care not to scrape them
against other parts, to prevent damage.
(8) Replace the removed parts by reversing the above procedure.
Note:
To prevent dust from entering the unit, reattach the
adhesive label on the opening for the Emergency Gear
SL.
adhesive label on the opening for the Emergency Gear
SL.
(9) Perform the mechanism initialization as follows to clear the
disc information stored in the Mechanism Ass’y.
Press the DISC1 button while pressing the DISC5 button.
Then, the Unit enters the CD Playback mode and mechanism
Initialization operation begins and disc change operation starts.
After that, the Unit enters Standby mode.
Press the DISC1 button while pressing the DISC5 button.
Then, the Unit enters the CD Playback mode and mechanism
Initialization operation begins and disc change operation starts.
After that, the Unit enters Standby mode.
DISC1 + DISC5
Top Cover Fastening Screws
Label
Fig. A
Loading L MF Ass’y
Loading R MF Ass’y
Emergency Gear SL
Dust Seal EMA SL
Disc Lock Sleeve SL
– Up Position –
– Down Position –
Fig. B
