Sony CMT-DC1 / HCD-DC1 Service Manual ▷ View online
3
HCD-DC1
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.
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.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
exceeding the limit for Class 1.
The following caution label is located inside the unit.
CAUTION
:
INVISIBLE LASER RADIATION WHEN OPEN AND
INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM.
ADVARSEL :
USYNLIG LASERSTRÅLING VED ÅBNING NÅR
SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. UNDGÅ UDSAETTELSE
FOR STRÅLING.
FOR STRÅLING.
VORSICHT :
UNSICHTBARE LASERSTRAHLUNG, WENN
ABDECKUNG GEÖFFNET UND SICHEREITSVERRIEGELUNG
ÜBERBRÜCKT. NICHT DEM STRAHL AUSSETZEN.
ÜBERBRÜCKT. NICHT DEM STRAHL AUSSETZEN.
VARO
!
:
AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALT-
TIINA NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN.
VARNING
:
OSYNLING LASERSTRÅLING NÄR DENNA DEL ÄR ÖPPNAD
OCH SPÄRREN ÄR URKOPPLAD. BETRAKTA EJ STRÅLEN.
ADVERSEL :
USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES OG
SIKKERHEDSLÅS BRYTES. UNNGÅ EKSPONERING FOR STRÅLEN.
VIGYAZAT
!
:
A BURKOLAT NYITÁSAKOR LÁTHATATLAN LÉZERSU-
GÁRVESZÉLY
!
KERÜLJE A BESUGÁRZÁST
!
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.
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.
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
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.
Ver 1.1
4
HCD-DC1
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 HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
BLOCK OR BASE UNIT
SERVICE POSTION
In checking the CD block, prepare jig (extension cable J-2501-
011-B).
011-B).
Connect jig (extension cable J-2501-011-B)
to the MAIN board (CN101) and CD board (CN101).
to the MAIN board (CN101) and CD board (CN101).
MAIN board
CD board
Ver 1.1
• MODEL IDENTIFICATION
– Rear Panel –
– Rear Panel –
Power Voltage
Incdication
AC: 120 V 60 Hz 75 W
AC: 230 V -50/60 Hz 75 W
AC: 110 – 120/
220 – 240 V / 50/60 Hz 75 W
Model
US, CND, MX models
AEP, UK models
HK, MY, SP models
• Abbreviation
CND : Canadian model
HK
HK
: Hong Kong model
MX
: Mexican model
MY
: Malaysia model
SP
: Singapore model
Power Voltage Indication
VOLTAGE SELECTOR
Switch
(HK, MY, SP models)
Switch
(HK, MY, SP models)
5
HCD-DC1
Parts Identification
The items are arranged in alphabetical order.
Refer to the pages indicated in parentheses () for details.
Main unit
CD cover qa (8, 18)
Shown open in the illustration
above.
above.
CD SYNC 9 (13, 14)
CD .m/M> qg (8, 9,
CD .m/M> qg (8, 9,
14)
CD Z qf (8)
CD u qj (8, 9)
CD x qh (8, 9, 21)
CD u qj (8, 9)
CD x qh (8, 9, 21)
DSG indicator qd (16)
FUNCTION 7 (8-10, 12-14, 18)
PHONES jack qs (18)
Remote sensor q;
TAPE PAUSE X 5 (12-14)
TAPE Y 2 (12-14)
TAPE m/M 4 (12)
TAPE x 3 (12-14, 21)
TUNER/BAND ql (10, 21)
VOLUME 8 (17)
FUNCTION 7 (8-10, 12-14, 18)
PHONES jack qs (18)
Remote sensor q;
TAPE PAUSE X 5 (12-14)
TAPE Y 2 (12-14)
TAPE m/M 4 (12)
TAPE x 3 (12-14, 21)
TUNER/BAND ql (10, 21)
VOLUME 8 (17)
BUTTON DESCRIPTIONS
@/1 (power) 1 (7, 10, 15, 17, 18)
Z 6 (12)
+/– qk (10, 11)
Z 6 (12)
+/– qk (10, 11)
1 2
5
4
7
6
3
8
9
q;
qs
qf qd
qh qg
qj
qk
ql
qa
SECTION 2
GENERAL
• LOCATION OF CONTROLS
– Rear View –
– Front View –
2
1
3
4
5
7
6
1 AM ANTENNA terminals
2 FM ANTENNA jack or terminals
3 AUDIO IN MD (VIDEO) jacks
4 CD DIGITAL OUT OPTICAL connector
5 SPEAKER terminals
6 VOLTAGE SELECTOR switch
(Hong Kong, Malaysia and Singapore models)
7 AC power cord
Setting the time
1
Turn on the system.
2
Press TIMER SET on the remote.
If you are setting the clock for the first time,
go to step 5.
go to step 5.
3
Press
.
/
>
on the remote
repeatedly until “SET CLOCK” appears
in the display.
in the display.
4
Press ENTER on the remote.
The hour indication flashes.
5
Press
.
/
>
on the remote
repeatedly to set the hour.
6
Press ENTER on the remote.
The minute indication flashes.
7
Press
.
/
>
on the remote
repeatedly to set the minute.
8
Press ENTER on the remote.
The clock will begin operating.
To reset the system clock
Start over from step 1.
This section is extracted from
instruction manual.
instruction manual.
Ver 1.1
6
HCD-DC1
Remote Control
CD REPEAT qk (8)
CD N ws (8, 9)
DIR MODE ql (12-14)
DISPLAY 2 (9, 11)
DSG 1 (16)
ENTER qd (7, 10, 15, 17)
MEMORY qh (10)
PLAY MODE 9 (8, 9, 14)
CD N ws (8, 9)
DIR MODE ql (12-14)
DISPLAY 2 (9, 11)
DSG 1 (16)
ENTER qd (7, 10, 15, 17)
MEMORY qh (10)
PLAY MODE 9 (8, 9, 14)
SLEEP qf (16)
STEREO/MONO qj (11)
TAPE Y w; (12-14)
TIMER SELECT qs (15, 17)
TIMER SET qg (7, 15, 17)
TUNER/BAND wa (10)
TUNING MODE q; (10, 11)
VOL +/– qa (17)
STEREO/MONO qj (11)
TAPE Y w; (12-14)
TIMER SELECT qs (15, 17)
TIMER SET qg (7, 15, 17)
TUNER/BAND wa (10)
TUNING MODE q; (10, 11)
VOL +/– qa (17)
BUTTON DESCRIPTIONS
X 4 (8, 12-14)
x 5 (8, 9, 12-14)
./> 6 (7-10, 15, 17)
m/M 7 (8, 10-12)
@/1 (power) 3 (7, 10, 15, 17)
z REC 8 (13)
x 5 (8, 9, 12-14)
./> 6 (7-10, 15, 17)
m/M 7 (8, 10-12)
@/1 (power) 3 (7, 10, 15, 17)
z REC 8 (13)
1
2
3
8
5
6
4
9
0
qa
qs
qd
qj
qk
qh
qg
qf
ql
w;
wa
ws
7
