Sony HCD-LS1 Service manual
HCD-LS1
SERVICE MANUAL
HCD-LS1 is the Amplifier, CD player and
Tuner section in CMT-LS1.
SPECIFICATIONS
US Model
Canadian Model
AEP Model
UK Model
E Model
Model Name Using Similar Mechanism NEW
CD Mechanism Type HG-1
Optical Pick-up Name KSS-540A
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.
North American model:
Continuous RMS power output (Reference)
European model:
DIN power output (Rated) 11 + 11 watts
Continuous RMS power output (Reference)
Other models:
DIN power output (Rated) 11 + 11 watts
Continuous RMS power output (Reference)
16 + 16 watts
(4 ohms at 1 kHz, 10% THD)
(4 ohms at 1 kHz, DIN)
16 + 16 watts
(4 ohms at 1 kHz, 10% THD)
(4 ohms at 1 kHz, DIN, 240 V)
11 + 11 watts
(4 ohms at 1 kHz, DIN, 220 V)
16 + 16 watts
(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):
Outputs TAPE OUT (stereo mini jack):
CD player section
System Compact disc and digital audio
Laser Semiconductor laser (λ=780 nm)
Laser output Max. 44.6 µW*
Frequency response 20 Hz – 20,000 Hz (±3.0 dB)
voltage 250 mV, impedance
47 kilohms
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
system
Emission duration: continuous
*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.
– Continued on next page –
COMPACT DISC RECEIVER
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
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: 530 – 1,710 kHz
European model: 531 – 1,602 kHz
Other models: 531 – 1,602 kHz
Antenna AM loop antenna
Intermediate frequency 450 kHz
(with the interval set at 10 kHz)
531 – 1,710 kHz
(with the interval set at 9 kHz)
(with the interval set at 9 kHz)
(with the interval set at 9 kHz)
530 – 1,710 kHz
(with the interval set at 10 kHz)
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: 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
Mass Approx. 4.0 (with Desktop
Supplied accessories Remote commander (1)
(w/h/d, incl. projecting parts,
controls and desktop stand)
stand) kg
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)
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
– MAIN Section – ........................................................... 27
5-8. Printed Wiring Boards
– AMP/RELA Y/JACK Board – ...................................... 28
5-9. Schematic Diagram
– AMP/RELA Y/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
– POWER SUPPLY Section – ....................................... 34
5-15. Schematic Diagram – POWER SUPPLY Section –....... 35
6. EXPLODED VIEWS ................................................ 37
7. ELECTRICAL PARTS LIST ............................... 43
Designs and specifications are subject to change
without notice.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
LINE WITH MARK 0 ON THE SCHEMATIC DIA GRAMS
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.
2
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE 0
SUR LES DIAGRAMMES SCHÉMA TIQUES 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.
SECTION 1
SERVICING NOTES
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 leaka ge tester, such as the Simpson 229 or RCA
WT -540A. Follo w 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 lowvoltage 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 A C range are suitable. (See Fig. A)
To Exposed Metal
Parts on Set
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
pick-up block. Therefore, when checking the laser diode emission, 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 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.
1.5 k
0.15 µF
Fig. A. Using an AC voltmeter to check AC leakage.
Ω
Earth Ground
AC
voltmeter
(0.75 V)
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
3
DISC EJECTION IN EMERGENCY
L
In case of emergency , remove the discs inside the Mec hanism 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
Mechanism Ass’y, and tak e off the Top Cover HS Ass’y . Refer
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.
(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.
(7) While keeping the Loading L/R MF Ass’y spread, remov e the
discs.
Note: When removing the discs, take care not to scrape them
against other parts, to prevent damage.
(8) Re place 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.
(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.
DISC1 + DISC5
Top Cover Fastening Screws
Label
Fig. A
Disc Lock Sleeve SL
Loading R MF Ass’y
– Up Position –– Down Position –
Emergency Gear SL
Dust Seal EMA S
Loading L MF Ass’y
Fig. B
4
• LOCATION OF CONTROLS
– Front View –
SECTION 2
GENERAL
1 23456 7
8 9 q; qa qs qd qf
– Top View –
54321
678
1 FUNCTION button
2 DISC 1 button and indicator
3 DISC 2 button and indicator
4 DISC 3 button and indicator
5 DISC 4 button and indicator
6 DISC 5 button and indicator
7 VOLUME + button
8 TUNER/BAND button
9 u button and indicator
q; x button
qa . m , TUNER - button
qs > M , TUNER + button
qd A button
qf VOLUME - button
1 AM ANTENNA terminals
2 FM ANTENNA jack
3 TAPE OUT jack
4 TAPE IN jack
5 PHONES jack
6 `/1 button
7 PANEL OPEN switch
8 PANEL OPEN/CLOSE switch
– Rear View –
1
1 CD DIGITAL OUT (OPTICAL) connector
2 LEFT SPEAKER terminals
3 RIGHT SPEAKER terminals
2
3
5
Step 2: Setting the time
You must set the time before you can use the
timer functions.
The clock is on a 24-hour system for the European
model, and a 12-hour system for other models.
The 24 hour system model is used for illustration
purposes.
Set the time before turning on the power.
31
2
564
8
97
10/0
>10
+
X
x
+
–
.>
M
+
–
–
1
2,3
N
m
2,3
3
Press +/– to set the minute then press
ENTER.
The clock starts.
To change the time
You can change the preset time while the power is
on.
1 Press CLOCK/TIMER SET.
2 Press +/– repeatedly until “SET CLOCK”
appears then press ENTER.
3 Repeat steps 2 and 3 of “Setting the time”.
Tips
• If you have made a mistake, start again from step 1.
• The built-in clock shows the time in the display
while the power is off.
• The upper dot flashes for the first half of a minute
(0 to 29 seconds), and the lower dot flashes for the
last half of a minute (30 to 59 seconds).
This section is extracted from
instruction manual.
1
Press CLOCK/TIMER SET while the
power is off.
The hour indication flashes.
2
Press +/– to set the hour then press
ENTER.
The minute indication flashes.
6
SECTION 3
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
MAIN CASE SECTION
5 two screws
(BTP 3 × 10)
5 two screws
(BTP 3 × 10)
9 main case section
7 FFC (26core)
(CN604)
6 two claws
8 two connectors
(PC501, 502)
3 belt
2 bottom cover
MECHANISM DECK (HG-1)
2 two lugs
1 screw
(B3 × 6)
4 two screws
(BTP 3 × 10)
DOOR MOTOR ASS’Y (M391) (Ne xt P age)
HOLDER MECHA, DUST SEAL EMA SL
(Page 9)
5 mechanism deck (HG-1)
3
1 four screws
(BTP 3 × 10)
2 two lugs
4 connector
(CP503)
7
DOOR MOTOR ASS’Y (M391)
(
)
7 door motor ass’y
(M391)
6 motor bracket
2 two screws
(BTP3 × 8)
1 connector
(CN391)
4
MAIN BOARD
4 Remove the MAIN board
in the direction of the arrow.
3 lug
1 FFC (15core)
(CN101)
S391
5 two screws
(P2.6 × 3)
Note: On installation MAIN board
adjust the S391 and slide knob.
slide knob
2 two connectors
(CN201, 204)
2 five connectors
CN203, 301, 302, 303, 391
3 two screws
(PWH2.6 × 6)
8
(1) MODE-1
EJECT, DISC LOAD state
(2) MODE-2
STANDARD State (STOP state)
(3) MODE-3
PLAY, DISC CHANGE state
When disassembling and reassembling the mechanism deck by any failure, the mechanism deck must be in (2) Standard
state (STOP state) as shown below.
• The mechanism deck (HG-1) has three modes. (Fig. A)
mecha UD sub cam SL
Traverse Mecha Down state
Traverse Mecha Up state
sus base X sub ass’y shaft
(Fig. A)
HOW TO ADJUST STOP STATE POSITION
D lock sleeve SL
emergency gear SL
2 Rotate gradually the emergency
gear SL in the up arrow direction
up to the position where the D lock
sleeve SL comes to the bottom.
(To attain (2) standard state in Fig. A)
1 Rotate fully the emergency gear SL
in the down arrow direction.
HOLDER MECHA, DUST SEAL EMA SL
1 four screws
(B3 × 5)
3 dust seal EMA SL
Note:Carefully remove it since
it is used again later.
2 holder mecha
2 holder mecha
PRECAUTIONS ON DISASSEMBLING AND REASSEMBLING MECHANISM DECK
1 four screws
(B3 × 5)
9
TOP COVER HS ASS’Y, BOTTOM COVER MF ASS’Y, F PANEL ASS’Y R237
2 Remove top cover HS ass’y
in the direction of arrow A.
A
5 F panel ass’y R237
1 two screws
(P2.6 × 3)
B
4 Remove bottom cover
MF ass’y in the direction
of arrow B.
3 two screws
(P2.6 × 5)
Note: 1.Before reassembling F Panel Ass’y R237
be sure that the end of the Mecha UD Sub
Cam SL on the right front does not protrude
as shown in (Fig. B.1). If it protrudes, move
it backward as follows:
1) Carefully remove the left side adhesive
label (Dust Seal EMA SL) on the left side
of the unit. refer to (Fig. B.2)
2) Turn the Emergency Gear SL with your
finger tip in the direction of the arrow
until the end of the Mecha UD Sub Cam
SL is drawn inside the unit. (See Fig. B.2).
When turning the Gear, DO NOT use nail
as the gear tooth can be broken.
3) Reattach the adhesive label (Dust Seal EMA
SL).
Note: 2.Be sure that the claws of F Panel Ass’y R237 are
securely inserted into each holes in Top Cover HS
Ass’y and Bottom Cover MF ass’y.
3 four screws
(P2.6 × 5)
Mecha UD Sub SL
(Fig. B.1)
10
Emergency Gear SL
(Fig. B.2)
MAIN R237 BOARD
(
)
y
MAIN R237 board
Unsolder the shorting lands
on the pick-up flexible board.
Note: To allow easier installation of the MAIN R237 board,
move the optical pick-up KSS-540A to the outermost
position, before removing the MAIN R237 board.
6 pick-up flexible board
(CP101)
2 screw
(P2.6 × 4)
4 wire flexible board
CP102
Note: When disconnecting these felxible boards,
do not open the MAIN R237 board wide to
avoid damage to flexible boaards.
1 screw
(P2.6 × 8)
3
5 PCB FLEX mecha ass’
(CP103)
LOADING MF ASS’Y
(Next Page)
STC POS GEAR SL
(Page 18)
INSTALLING THE MAIN R237 BOARD
11
LOADING MF ASS’Y
Note:Though the cam of the Mecha UD sub cam SL will be in (1) state in (Refer to page 9. Fig. A)
when the loading MF Ass’y is assembled, set in (2) state in (Refer to page 9. Fig. A) using
the emergency gear SL.
6 While pushing lever inward, remove
loading MF ass’y by lifting it upward.
1 three screws
(P2 × 2)
2 two screws
(2.6 × 3)
7 loading MF ass’y
8 washer
lever
4
9 loading link
SL ass’y
5 ditch
2 two screws
(2.6 × 3)
5 ditch
TRAVERSE MECHA ASS’Y
3 two damper screws
4 traverse mecha ass’y
1 three screws
(P2 × 2)
3 screw
(P1.7 × 2.5)
3 two damper screws
PCB FLEX MECHA
ASS’Y
(Page 15)
2 FR chassis SL ass’y
12
MOTOR (SLED) (M1)
1 Remove two solders of
the sled motor leads (M1).
2 washer
5 first gear
Note:When first gear is removed,
make sure to install a bland
new gear.
3 second gear
4 two screws
(P1.7 × 2.5)
6 motor (sled)
(M1)
Note:Pay attention to the motor (sled)
installing direction.
INSTALLING A MOTOR (SLED) (M1)
Note: Press fit a new first gear so that the gap
between the chassis surface and the bottom
of first gear is 0.1mm as shown in Fig. C.
first gear
0.1 mm
motor (sled) (M1)
(Fig. C)
13
OPTICAL PICK-UP KSS-540A
4 PU guide shaft SL
3 two SH lock plate SLs
2 screw
(P2.6 × 3)
3 two SH lock plate SLs
2 screw
(P2.6 × 3)
1 two screws
(P1.7 × 4)
6 optical pick-up KSS-540A
5 pick-up flexible board
Note: Before disconnecting the pick-up
flexible board from the optical pick-up
KSS-540A, short the laser diode
shorting lands on the bottom of the
optical pick-up KSS-540A.
Refer to Fig. D.
INSTALLING A OPTICAL PICK-UP KSS-540A
1. Connect the pick-up flexible board to the optical pick-up KSS-540A.
2. Open the laser diode shorting lands on the bottom of the optical pick-up KSS-540A.
Note:Use the soldering iron whose metal part
is grounded or a ceramic soldering iron.
pick-up flexible board
(Fig. D)
14
2 two screws
(P2 × 2)
1 Remove two solders of
the STC motor SL ass’y
flexible board (M3).
4 screw
(P2 × 2)
5 PCB FLEX mecha ass’y
3 Remove four solders of the
loading motor leads (M4)
and up/down motor leads
(M5).
PU G PLATE H SL
PCB FLEX MECHA ASS’Y
3 screw (2 × 4)
2 screw (2 × 4)
1 screw (2 × 4)
4 PU G plate H SL
Note:Assemble with tighten
screw in the order of
3 to 1.
15
UD LINK ARM SL
MOTOR CHASSIS SL ASS’Y
Note:When reassembling motor chassis
SL ass’y with the 2 screws, DO NOT
let its Emergency Gear SL Teach touch
the edge of the MA chassis SL S ass’y
as they can be broken.
1 washer
2 UD link arm SL
MA chassis SL ass’y
emergency gear SL
4 motor chassis SL ass’y
2 two screws
(2.6 × 3)
2 screw
(2.6 × 3)
4 two pet washers
1 anti rattle SP SL
5 sus base X sub ass’y
4 two pet washers
3
Note:Reassemble UD S cam guide SL so that their
wider sides come upper as shwon in Fig. E.
mecha UD sub cam SL
Note:Be sure that the plate spring SL
is put on sus base X sub ass’y
as shown in figure.
plate spring SL
LDG PLATE CAM SL
4 two pet washers
6 mecha UD sub cam SL
7 two UD S cam guide SL
Wide Wide
(Page 18)
mecha UD sub cam SL
Note:Hook anti rattle SP SL
on motor chassis SL
ass’y as shown in figure.
16
Narrow Narrow
(fig. E)
UD S cam guide SLUD S cam guide SL
DISC LOCK ARM SL
L
1 Apply sellotape to the disc lock SL ass’y as shown in
figure to prevent the disc lock from falling off while
removing the disc arm SL.
2 washer
3 disc lock arm S
sellotape
(Fig. F. 1)
disc lock SL ass’y
D lock spring SL
INSTALLING THE DISC LOCK ARM SL
POSITIONING OF THE DISC LOCK ARM SL IS REQUIRED. (Refer to Fig. F. 2)
(1) Place the disc lock spring SL as shown in the figure.
(2) Insert the disc lock pinion into the hole on the disc lock arm SL.
(3) Adjust the position of the disc lock arm SL until its mark meets
the V-cut of the disc lock pinion as shown in the figure.
(4) Insert the shaft hole of the disc lock arm SL into the shaft.
(5) Hook the end of the disc lock spring SL on the chassis hole as
shown in the figure.
(6) Reassemble the washer in place.
(7) Peel off the sellotape. Refer to Fig. F. 1.
disc lock arm SL
disc lock pinion
(Fig. F. 2)
washer
17
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