CMT-L1, HCD-L1 - Sony Audio Service Manual (repair manual)

Model
CMT-L1 HCD-L1
Pages
68
Size
11.88 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cmt-l1-hcd-l1.pdf
Date

View Sony CMT-L1 / HCD-L1 Service Manual online

HCD-L1
US Model
Canadian Model
AEP Model
UK Model
E Model
SERVICE MANUAL
MICRO Hi-Fi COMPONENT SYSTEM
Sony Corporation
Published by Sony Techno Create Corporation
9-873-561-02
2011A05-1
© 2011.01
Ver. 1.1  2011. 01
SPECIFICATIONS
This set is the tuner, CD and amplifier
section in CMT-L1.
Model Name Using Similar Mechanism
NEW
CD Mechanism Type
CDM71A
Base Unit Type
BU-31BD63A
CD
SECTION
— Continued on next page —
Main unit (HCD-L1)
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 25 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):
25 + 25 W
(4 ohms at 1 kHz, 10%
THD)
European model:
DIN power output (rated): 20 + 20 W
(4 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
25 + 25 W
(4 ohms at 1 kHz, 10%
THD)
Music power output (reference):
25 + 25 W
Other models:
The following measured at 220 V AC, 60 Hz
DIN power output (rated): 20 + 20 W
(4 ohms at 1 kHz, DIN,
110 V - 240 V AC)
Continuous RMS power output (reference):
25 + 25 W
(4 ohms at 1 kHz, 10%
THD, 110 V - 240 V AC)
Inputs
MD/TAPE IN (stereo minijack):
Sensitivity 450 mV (MD)/
250 mV (Tape),
impedance 47 kilohms
Outputs
MD/TAPE OUT (stereo minijack):
Sensitivity 250 mV,
impedance 1 kilohmes
PHONES (stereo minijack):
Accepts headphones with
an impedance of  8 ohms
or more
DIGITAL CD OPTICAL OUT (Supported sampling
frequency: 44.1 kHz)
CD player section
System
Compact disc and digital
audio system
Laser
Semiconductor laser
(
λ = 795 nm)
Emission
duration: continuous
Frequency response
2 Hz – 20 kHz
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 wire antenna
Antenna terminals
75 ohm unbalanced
Intermediate frequency
10.7 MHz
 
 
            
2
HCD-L1
       After correcting the original service problem, perform the
following safety checks 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
    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 2V AC range are suitable. (See
Fig. A)
SAFETY  CHECK-OUT
To Exposed Metal 
Parts on Set
0.15 
µ
F
1.5 k
AC
Voltmeter
(0.75 V)
Earth Ground
Fig. A.  Using an AC voltmeter to check AC leakage.
General
Power requirements
North American model:
120 V AC, 60 Hz
European  model:
230 V AC, 50/60 Hz
Other models:
110 - 240 V AC ,
50/60 Hz
Power consumption
European model:
See the nameplate
0.2 W (at the Power
Saving Mode)
Other models:
See the nameplate
Dimensions (w/h/d)
Approx. 293 
× 246 ×
131 mm incl. projecting
parts and controls
Mass
Approx. 3.5 kg
Design and specifications are subject to change
without notice.
AM tuner section
Tuning range
North American model:
530 - 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 - 1,710 kHz
(with the tuning interval
set at 9 kHz)
European model:
531 - 1,602 kHz
(with the tuning interval
set at 9 kHz)
Other models:
530 - 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 - 1,602 kHz
(with the tuning interval
set at 9 kHz)
Antenna
AM loop antenna, external
antenna terminal
Intermediate frequency
450 kHz
3
HCD-L1
TABLE OF CONTENTS
1. SERVICING NOTES
······················································· 4
2. GENERAL
·········································································· 5
3. DISASSEMBLY
3-1.
Bottom Plate,Case ························································ 9
3-2.
Front Panel Section ······················································ 9
3-3.
POWER Board, AM/FM Tuner ·································· 10
3-4.
MAIN Board ······························································ 10
3-5.
AMP Board, Regurator ·············································· 11
3-6.
Door Panel, LED Board (R), Indicator ······················ 11
3-7.
LED Board (L) ··························································· 12
3-8.
FL (L1) Board ···························································· 12
3-9.
SWITCH Board, TOUCH SWITCH Board ··············· 13
3-10. CD Board ··································································· 13
3-11. CD-mechanism (CDM71A) ······································· 14
3-12. L.MOTOR Board ······················································· 14
3-13. ENCODER Board, D.sensor Board ··························· 15
3-14. RTL Pulley Assy ························································ 15
3-15. BD Board ··································································· 16
3-16. C.MOTOR Board, L.SENSOR Board ······················· 16
3-17. Base Unit ···································································· 17
3-18. Holder Assy, Sled Motor Assy ··································· 17
3-19. RTR Pulley Assy ························································ 18
3-20. SPT Pulley Assy ························································· 18
4. TEST MODE
···································································· 19
5. ELECTRICAL ADJUSTMENTS
······························· 22
6. DIAGRAMS
6-1.
Block Diagrams  CD Section ····································· 23
MAIN Section ···························································· 24
6-2.
Circuit Boards Location ············································· 25
6-3.
Printed Wiring Board  BD Section (Side A) ·············· 26
6-4.
Printed Wiring Board  BD Section (Side B) ·············· 27
6-5.
Schematic Diagram  BD Section ······························· 28
6-6.
Schematic Diagram  CD Section ······························· 29
6-7.
Printed Wiring Board  CD Section (Side A) ·············· 30
6-8.
Printed Wiring Board  CD Section (Side B) ·············· 31
6-9.
Printed Wiring Board  MOTOR Section ···················· 32
6-10. Schematic Diagram  MOTOR Section ······················· 33
6-11. Printed Wiring Board  MAIN Section (Side A) ········· 34
6-12. Printed Wiring Board  MAIN Section (Side B) ········· 35
6-13. Schematic Diagram  MAIN Section (1/2) ·················· 36
6-14. Schematic Diagram  MAIN Section (2/2) ·················· 37
6-15. Printed Wiring Board  AMP Section (Side A) ··········· 38
6-16. Printed Wiring Board  AMP Section (Side B) ··········· 39
6-17. Schematic Diagram  AMP Section ····························· 40
6-18. IC Block Diagrams ····················································· 41
6-19. Printed Wiring Board  DISPLAY Section ·················· 42
6-20. Schematic Diagram  DISPLAY Section ····················· 43
6-21. Printed Wiring Board  SWTICH Section ··················· 44
6-22. Schematic Diagram  SWTICH Section ······················ 45
6-23. Printed Wiring Board  POWER Section ···················· 46
6-24. Schematic Diagram  POWER Section ······················· 47
6-25. IC PIN FUNCTION DESCRIPTION ························ 48
7. EXPLODED VIEWS
7-1.
Case Section ······························································· 51
7-2.
Chassis Section ·························································· 52
7-3.
Front Panel Section ···················································· 53
7-4.
Mechanism Section(CDM71A)-1 ······························ 54
7-5.
Mechanism Section(CDM71A)-2 ······························ 55
7-6.
Base Unit Section (BU-31BD63A) ···························· 56
8. ELECTRICAL PARTS LIST
······································· 57
4
HCD-L1
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.
This appliance is classified as a CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT MARKING is located on the rear
exterior.
Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.
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 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.
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.
SECTION 1
SERVICING NOTES
This caution
label is
located inside
the unit.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS 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 PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
5
HCD-L1
SECTION 2
GENERAL
This section is extracted
from instruction manual.
List of Button Locations and Reference Pages
How to use this page
Use this page to find the location of buttons and other
parts of the system that are mentioned in the text.
Main unit
ALPHABETICAL ORDER
A – F
CD cover 2 (11)
CD u 7 (11 - 13)
CD x 8 (11, 12)
DISPLAY 6 (17, 20, 21)
Display 1 (20, 21)
FUNCTION qa (11 - 14, 16, 23,
25)
P – Z
PHONES jack qf
PLAY MODE/TUNING MODE
qd
 (11 - 16, 25)
Remote sensor qg
TUNER/BAND 9 (15, 16, 25)
TUNING +/– qs (15, 16)
VOL +/– 
 (19)
Illustration number
PLAY MODE qg (9, 13, 14)
R
R
Name of button/part
Reference page
1
2
3
6789
q;
qa
qd
qg
qf
5
BUTTON DESCRIPTIONS
/1
?
 (power) 4 (8, 19)
./> qs (11 - 13)
m/M qs (11)
Z 3 (11)
V OPEN 5
To open the front cover, push
down on V OPEN.
q;
4
qs
6
HCD-L1
Remote control
ALPHABETICAL ORDER
A – F
CD N wd (11 - 13)
CD X ws (11)
CD x qs (11, 12)
CLEAR 9 (12, 13, 17)
CLOCK/TIMER SELECT 6
(19)
CLOCK/TIMER SET 7 (10, 19)
CURSOR T/t wf (10, 13)
DIMMER ql (20)
DISPLAY wh (17, 20, 21)
DSG qf (18)
ENTER/YES 8 (10, 12 - 15, 17,
19, 23)
FM MODE qh (16)
FUNCTION w; (11 - 14, 16, 23)
L – Z
Letter/Numeric buttons wg (12,
13, 16)
MENU/NO q; (13 - 17, 23)
NAME EDIT/SELECT 3 (13,
17)
PLAY MODE/TUNING MODE
qk
 (11 - 16)
PRESET EQ qg (18)
REPEAT qh (11)
SCROLL 5 (14, 21)
SLEEP 2 (18)
TIME wj (12, 20, 21)
TUNER BAND wa (15, 16)
TUNING +/– qj (15, 16)
VOL +/– qd (19)
1 2 3 4
5
6
7
qa
qs
qd
qf
qg
qh
qj
qk
ql
w;
wa
ws
wd
wf
wg
wh
wj
8
9
0
BUTTON DESCRIPTIONS
@/1 (power) 4 (8, 19)
./> qa (10 - 14, 19)
m/M wf (11)
Z 1 (11)
7
HCD-L1
Replacing the battery in
the remote
1
Slide out and remove the battery case.
2
Insert a new lithium battery CR2025
with the + side facing up.
3
Slide the battery case back in.
Tip
When the battery no longer operates the remote,
replace the battery with a new one.
Note
If you are not going to use the remote for a long time,
remove the battery to avoid damage caused by
corrosion from battery leakage.
Notes on lithium battery
• Keep the lithium battery out of the reach of
children.
Should the battery be swallowed, immediately
consult a doctor.
• Wipe the battery with a dry cloth to assure a good
contact.
• Be sure to observe the correct polarity when
installing the battery.
• Do not hold the battery with metallic tweezers,
otherwise a short-circuit may occur.
WARNING
Battery may explode if you mistreated.
Do not recharge, disassemble or dispose of in fire.
Setting the clock
1
Turn on the system.
2
Press CLOCK/TIMER SET on the
remote.
3
Press 
.
 or 
>
 on the remote
repeatedly to set the day, and then
press ENTER/YES or CURSOR
t
 on
the remote.
The hour indication flashes.
4
Press 
.
 or 
>
 on the remote
repeatedly to set the hour, and then
press ENTER/YES or CURSOR
t
 on
the remote.
The minute indication flashes.
5
Press 
.
 or 
>
 on the remote
repeatedly to set the minute, and then
press ENTER/YES on the remote.
If you make a mistake
Press TCURSOR or CURSORt on the
remote repeatedly until the indication you want
to change (day, hour, minute) flashes, and then
change the setting.
To adjust the clock
1
Press CLOCK/TIMER SET on the remote.
2
Press . or > on the remote repeatedly
until “CLOCK SET?” appears in the display,
and then press ENTER/YES on the remote.
3
Do the same procedures as steps 3 to 5
above.
a lithium battery CR2025
8
HCD-L1
SECTION 3
DISASSEMBLY
 The equipment can be removed using the following procedure.
HOLDER ASSY,
SLED MOTOR ASSY
(Page 17)
RTL PULLEY ASSY
(Page 15)
RTR PULLEY ASSY
(Page 18)
SPT PULLEY ASSY
(Page 18)
SWITCH BOARD,
TOUCH SWITCH BOARD
(Page 13)
LED BOARD (L)
(Page 12)
L.MOTOR BOARD
(Page 14)
C MOTOR BOARD,
L.SENSOR BOARD
(Page 16)
ENCODER BOARD,
D.SENSOR BOARD
(Page 15)
BASE UNIT 
(BU-31BD63A)
(Page 17)
DOOR PANEL,
LED BOARD (R),INDICATOR
(Page 11)
BD BOARD
(Page 16)
CD-MECHANISM
(CDM71A)
(Page 14)
FL(L1) BOARD
(Page 12)
CD BOARD
(Page 13)
FRONT PANEL SECTION
(Page 9)
POWER BOARD,
AM/FM Tuner
(Page 10)
BOTTOM PLATE,CASE
(Page 9)
MAIN BOARD
(Page 10)
AMP BOARD,
REGURATOR
(Page 11)
SET (HCD-L1)
9
HCD-L1
Note :
Follow the disassembly procedure in the numerical order given.
3-1. Bottom Plate,Case
3-2. Front Panel Section
1
five
 screws (+BVTP 3 
×
 8)
2
three
 screws (+BVTP 2.6 
×
 8)
7
screw (+PTT 3 
×
 6)
9
screw (+PTT 3 
×
 6)
5
four screws (SS)
6
two screws (SS)
q;
two screws (+PTT 3 
×
 6)
qa
two screws 
     (+PTT 3
 
×
 6)
8
two screws (SS)
4
bottom plate
3
earth plate
qd
three claws
qg
case
qs
qf
connector
     (CN801)
4
two
 screws (+BVTP 2.6 
×
 8)
8
connector (CN401)
1
earth plate
9
connector (CN1201)
q;
connector
     (CN1321)
6
flat type wire (13 core)
7
flat type wire (11 core)
5
chassis section
qa
Front panel section
3
two screws (+BVTP 2.6 
×
 8)
2
screw (+BVTP 3
 
×
 8)
10
HCD-L1
3-3. POWER Board, AM/FM Tuner
3-4. MAIN Board
4
POWER board
3
connector (CN500)
6
flat type wire
    (11core or 15core)
7
AM/FM tuner
1
connector (CN800)
2
two screws
     (+BVTP 3
 
×
 8)
5
two screws
     (+BVTP 3
 
×
 8)
5
MAIN board
4
3
two claws
2
three screws
     (+BVTP 3
 
×
 8)
1
flat type wire (23core)

Download Sony CMT-L1 / HCD-L1 Service Manual (Repair Manual)

Here you can view online and download Sony CMT-L1 / HCD-L1 Service Manual in PDF. CMT-L1 / HCD-L1 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony CMT-L1 / HCD-L1 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.