HCD-DX10, HCD-RG20, HCD-RG30T, HCD-RG4SR, MHC-DX10, MHC-RG20, MHC-RG30T, MHC-RG4SR - Sony Audio Service Manual (repair manual)

Model
HCD-DX10 HCD-RG20 HCD-RG30T HCD-RG4SR MHC-DX10 MHC-RG20 MHC-RG30T MHC-RG4SR
Pages
52
Size
4.84 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-dx10-hcd-rg20-hcd-rg30t-hcd-rg4sr-mhc-dx10-mhc.pdf
Date

View Sony HCD-DX10 / HCD-RG20 / HCD-RG30T / HCD-RG4SR / MHC-DX10 / MHC-RG20 / MHC-RG30T / MHC-RG4SR Service Manual online

HCD-DX10/RG4SR/RG20/RG30T
US Model
HCD-RG4SR/RG20/RG30T
Canadian Model
HCD-RG20/RG30T
AEP Model
UK Model
HCD-RG20
E Model
Australian Model
HCD-DX10
SERVICE MANUAL
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-873-225-03
2003K16-1
© 2003.11
SPECIFICATIONS
Ver 1.2  2003. 11
Photo : HCD-DX10
• HCD-DX10/RG4SR/RG20/RG30T is the
tuner, deck, CD and amplifier section in
MHC-DX10/RG4SR/RG20/RG30T.
Model Name Using Similar Mechanism
NEW
CD
CD Mechanism Type
CDM58F-K6
Section
Optical Pick-up Name
KSM-213D
Tape deck
Model Name Using Similar Mechanism
NEW
Section
Tape Transport Mechanism Type
CWL44FF29
Amplifier section
Canadian models:
HCD-RG30T
Continuous RMS power output (reference)
75 + 75 watts (6 ohms at 1
kHz, 10% THD)
Total harmonic distortion less than 0.07%
(6 ohms at 1 kHz, 50 W)
HCD-RG20
Continuous RMS power output (reference)
60 + 60 watts (6 ohms at 1
kHz, 10% THD)
Total harmonic distortion less than 0.07%
(6 ohms at 1 kHz, 30 W)
European model:
HCD-RG20
DIN power output (rated) 40 + 40 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
50 + 50 watts (6 ohms at 1
kHz, 10% THD)
Music power output (reference)
95 + 95 watts (6 ohms
at 1 kHz, 10% THD)
Other model:
HCD-DX10
The following measured at AC 120, 220, 240 V
50/60 Hz
DIN power output (rated) 40 + 40 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
50 + 50 watts (6 ohms at 1
kHz, 10% THD)
Inputs
GAME (AUDIO) IN (phono jack):
voltage 450 mV,
impedance 47 kilohms
Outputs
PHONES (stereo mini jack):
accepts headphones of
8 ohms or more
Front speaker:
accepts impedance of 6 to
16 ohms
Surround speaker (HCD-RG4SR only):
accepts impedance of 6 to
16 ohms
CD player section
System
Compact disc and digital
audio system
Laser
Semiconductor laser
(
λ=780 nm)
Emission duration:
continuous
Frequency response
2 Hz – 20 kHz (
±0.5 dB)
Wavelength
780 – 790 nm
Signal-to-noise ratio
More than 90 dB
Dynamic range
More than 90 dB
Tape deck section
Recording system
4-track 2-channel stereo
Frequency response
40 – 13,000 Hz (
±3 dB),
using Sony TYPE I
cassette
AUDIO POWER SPECIFICATIONS:
(HCD-RG4SR USA model only)
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
with 6 ohm loads both channels driven, from
120 – 10,000 Hz; rates 100 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
Total harmonic distortion less than 0.07%
(6 ohms at 1 kHz, 50 W)
(HCD-RG30T USA model only)
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
with 6 ohm loads both channels driven, from
120 – 10,000 Hz; rates 75 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
Total harmonic distortion less than 0.07%
(6 ohms at 1 kHz, 30 W)
(HCD-RG20 USA model only)
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
with 6 ohm loads both channels driven, from
120 – 10,000 Hz; rates 60 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion from 250 milliwatts to
rated output.
Total harmonic distortion less than 0.07%
(6 ohms at 1 kHz, 30 W)
MINI HIFI COMPONENT SYSTEM
— Continued on next page —
2
HCD-DX10/RG4SR/RG20/RG30T
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.
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.
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.
    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
General
Power requirements
North American models:
120 V AC, 60 Hz
European models:
230 V AC, 50/60 Hz
Australian models:
230 – 240 V AC,
50/60 Hz
Mexican models:
120 V AC, 50/60 Hz
Other models:
120 V, 220 V or
230 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector
Power consumption
USA models:
HCD-RG4SR:
160 watts
HCD-RG30T:
115 watts
HCD-RG20:
95 watts
Canadian models:
HCD-RG30T:
115 watts
HCD-RG20:
95 watts
European model:
HCD-RG20:
85 watts
1.0 watts (at the Power
Saving Mode)
Other model:
HCD-DX10:
85 watts
Dimensions (w/h/d)
Approx. 280 
×
 325 
×
 421 mm
Mass
North American models:
HCD-RG4SR:
Approx. 8.7 kg
HCD-RG30T:
Approx. 8.2 kg
HCD-RG20:
Approx. 7.8 kg
European model:
HCD-RG20:
Approx. 8.1 kg
Other model:
HCD-DX10:
Approx. 8.2 kg
Design and specifications are subject to change
without notice.
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
87.5 – 108.0 MHz
Antenna
FM lead antenna
Antenna terminals
75 ohm unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
Pan-American models:
530 – 1,710 kHz (with the
interval set at 10 kHz)
531 – 1,710 kHz (with the
interval set at 9 kHz)
European and Middle Eastern models:
531 – 1,602 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)
Antenna
AM loop antenna
Antenna terminals
External antenna terminal
Intermediate frequency
450 kHz
3
HCD-DX10/RG4SR/RG20/RG30T
PARTS No.
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.
TABLE OF CONTENTS
MODEL IDENTIFICATION
— BACK PANEL —
• Abbreviation
CND : Canadian model
AUS
: Australian model
AR
: Argentina model
SP
: Singapore model
TW
: Taiwan model
MX
: Mexican model
MY
: Malaysia model
E2
: 120V AC Area in E model
E3
: 240V AC Area in E model
E51
: Chilean and Peruvian model
1. GENERAL
·········································································· 4
2. DISASSEMBLY
································································ 6
3. TEST MODE
···································································· 11
4. ELECTRICAL ADJUSTMENTS
······························· 13
5. DIAGRAMS
······································································ 15
5-1. Circuit Board Location ················································ 15
5-2. Block Diagrams ··························································· 16
Tuner/CD Section ························································ 16
Main Section ······························································· 17
5-3. Printed Wiring Board   CD Section ····························· 18
5-4. Schematic Diagram   CD Section ································ 19
5-5. Printed Wiring Board   Main Section ·························· 20
5-6. Schematic Diagram   Main Section (1/4) ···················· 21
5-7. Schematic Diagram   Main Section (2/4) ···················· 22
5-8. Schematic Diagram   Main Section (3/4) ···················· 23
5-9. Schematic Diagram   Main Section (4/4) ···················· 24
5-10. Printed Wiring Board   Address Sensor,
Driver Motor Section ··················································· 25
5-11. Printed Wiring Board   Panel Section ·························· 26
5-12. Schematic Diagram   Panel Section ···························· 27
5-13. Printed Wiring Board   Power Section ························ 28
5-14. Printed Wiring Board   Trans Section ·························· 29
5-15. Schematic Diagram   Trans Section ···························· 30
5-16. IC Block Diagrams ······················································ 31
5-17. IC Pin Function Description ········································ 34
6. EXPLODED VIEWS
6-1. Main Section ······························································· 36
6-2. Front Panel Section ····················································· 37
6-3. Main Board Section ····················································· 38
6-4. CD Mechanism Deck Section ····································· 39
7. ELECTRICAL PARTS LIST
······································· 40
MODEL
RG20: US, CND models
RG20: AEP, UK models
DX10: E2, E3, E51, TW models
DX10: AUS, AR, MX models
RG30T
RG4SR
DX10: MY, SP models
PARTS No.
4-234-701-0s
4-234-701-1s
4-234-701-2s
4-234-701-3s
4-234-701-4s
4-234-701-5s
4-234-701-6s
4
HCD-DX10/RG4SR/RG20/RG30T
This section is extracted
from instruction manual.
SECTION 1
GENERAL
Main unit
1
2
3
4 5 6
7
8
9
q;
qa
qs
qd
qf
qg
qh
qj
qk
ql
w;
wa
ws
wd
wf
wg
wh
wj
wk
AUDIO jacks wd (19)
CD wk (10 – 12, 15)
CD SYNC qh (15)
Deck A ws (14)
Deck B qs (14 – 16)
DISC 1 – 3 4 (10, 11)
DISC SKIP EX-CHANGE 3
(10, 11)
Disc tray 5 (10)
DISPLAY w; (12)
EFFECT ON/OFF qd
(17)
GAME wg (18 – 20)
BUTTON DESCRIPTIONS
?/1 (power) 1
Z OPEN/CLOSE 6
Z (deck B) qa
M (fast forward) qf
. (go back) qj
> (go forward) qj
X (pause) qj
H (play) qj
x (stop) qj
m (rewind) qk
Z (deck A) wa
GAME EQ ql (17, 18, 20)
GROOVE 8 (17)
MOVIE EQ 7 (17)
MUSIC EQ 2 (17)
PHONES jack q;
REC PAUSE/START qg (15)
TAPE A/B wh (14, 15)
TUNER/BAND wj (12, 13, 15)
VIDEO jack wf (19, 20)
VOLUME control 9
5
HCD-DX10/RG4SR/RG20/RG30T
Remote Control
1 2 3 4
5
6
7
8
9
0
qa
qs
qd
qf
qg
qh
qj
qk
ql
w;
wa
CD ql (10 – 12, 15)
CLEAR w; (11)
CLOCK/TIMER SELECT 2
(16, 19)
CLOCK/TIMER SET 3 (9, 16,
18)
DISPLAY 6 (12)
D.SKIP 7 (10)
ENTER qg (9, 11 – 13, 16, 18,
19)
EQ +/– qf (17)
GAME q; (18 – 20)
GROOVE qd (17)
ON/OFF qh (17)
PLAY MODE wa (10, 11)
PRESET +/– 5 (13)
REPEAT 8 (11)
SLEEP 1 (18)
STEREO/MONO 8 (13)
SURROUND qa (17)
TAPE A/B 9 (14, 15)
TUNER MEMORY qj (12, 13)
TUNER/BAND qk (12, 13)
TUNING +/– 5 (12, 13)
VOL +/– qs
BUTTON DESCRIPTIONS
?/1 (power) 4
M (fast forward) 5
. (go back) 5
> (go forward) 5
X (pause) 5
N (play) 5
m (rewind) 5
x (stop) 5
Setting the time
1
 Press 
?/1
 to turn on the system.
2
Press CLOCK/TIMER SET on the
remote.
Proceed to step 5 when “CLOCK” appears
in the display.
3
Press 
.
 or 
>
 repeatedly to select
“SET CLOCK”.
4
Press ENTER on the remote.
5
Press 
.
 or 
>
 repeatedly to set the
hour.
6
Press ENTER on the remote.
The minute indication flashes.
7
Press 
.
 or 
>
 repeatedly to set the
minute.
8
Press ENTER on the remote.
Tip
If you made a mistake or want to change the time,
start over from step 2.
Note
The clock settings are canceled when you disconnect
the power cord or if a power failure occurs.
6
HCD-DX10/RG4SR/RG20/RG30T
SECTION 2
DISASSEMBLY
2-1. CASE (TOP)
Note :
 Disassemble the unit in the order as shown below.
Note :
 Follow the disassembly procedure in the numerical order given.
CD board, Driver board, Motor board and Address sensor board 
Case (Top)
CD door
Front panel section and CD mechanism 
deck (CDM58F-K6) section
CD board
Panel board
Tape mechanism deck and Panel board
Sub trans board, Video out board and Trans board
Main board and Power board
Base unit
Set
4
qa
q;
q;
8
Case (Top)
Case (Side-L)
Case (Side-R)
5
Two screws (Case 3 TP2)
7
Two screws
     (+BVTP 3
 
×
 10)
3
Two screws
     (+BVTP 3
 
×
 10) 
1
Two screws (Case 3 TP2)
9
Four screws (+BVTP 3
 
×
 6)
6
Screw (Case 3 TP2)
2
Screw (Case 3 TP2)
7
HCD-DX10/RG4SR/RG20/RG30T
2-2. CD DOOR
2-3. FRONT PANEL SECTION AND CD MECHANISM DECK (CDM58F-K6) SECTION
2
 Pull-out the disc tray.
1
 Turn the pulley to the direction of arrow.
pulley
CD door
Front panel side
CD mechanism deck (CDM58F-K6)
3
qd
qs
3
 Screw
     (+BVTP 3
 
×
 10)
4
Screw (+BVTP 3
 
×
 10)
qa
Three screws (+BVTP 3
 
× 
10)
9
Screw 
     (+BVTP 3
 
× 
10)
1
Connector 
      (CN704) 
6
Connector (CN201) 
5
CD mechanism deck
(CDM58F-K6)
2
Flat type wire (19 core)
7
Connector (CN202) 
8
Connector (CN203) 
Front panel section
q;
Connector 
      (CN605) 
8
HCD-DX10/RG4SR/RG20/RG30T
2-4. TAPE MECHANISM DECK AND PANEL BOARD
2-5. SUB TRANS BOARD, VIDEO OUT BOARD AND TRANS BOARD
qa
PANEL board
7
Volume knob
2
Six
 screws
     (+BVTP 2.6
 
×
 8)
8
Six
 screws
     (+BVTP 2.6
 
×
 8)
9
Five
 screws
     (+BVTP 2.6
 
×
 8)
q;
Eight
 screws
     (+BVTP 2.6
 
×
 8)
3
Tape mechanism deck
6
Belt (FR)
4
Belt (BF)
5
Belt (AF)
1
Flat type wire (17 core)
qk
Four screws
     (+BVTT 4
 
×
 6)
ql
Power transformer (T911)
TRANS board
Cover (duct)
qj
Connector (CN915)
qh
DC fan (M961)
4
Connector (CN504)
1
Connector (CN901)
qs
VIDEO OUT board
8
SENSOR board
2
Connector (CN2)
3
Connector 
      (CN903)
qd
Five screws
     (+BVTP 3
 
×
 10)
qf
Back panel
qg
Two screws
     (+BVTP 3
 
×
 10) 
5
Two screws
     (+BVTP 3
 
×
 10)
7
Screw (+BVTP 3
 
×
 10)
9
Two screws 
     (+BVTP 3
 
×
 10)
q;
SUB TRANS 
      board
6
qa
Screw
     (+BVTP 3
 
×
 10)
9
HCD-DX10/RG4SR/RG20/RG30T
2-6. MAIN BOARD AND POWER BOARD
2-7. BASE UNIT
6
Three screws (+BVTP 3
 
×
 8)
8
Two screws (+BVTP 3
 
×
 8)
9
Heat sink
5
Two screws (+BVTP 3
 
×
 16)
1
Two screws (+BVTP 3
 
×
 10) 
4
MAIN board
7
POWER board
MAIN board
2
3
4
 Turn the pulley to the direction of arrow.
pulley
Base unit
qs
q;
Two screws 
      (+PTPWH M2.6)
6
Screw 
      (+PTPWH M2.6)
1
Pulley (B), chucking
2
Two screws (+PTPWH M2.6)
3
Lever (lifter)
qa
Screw (DIA. 12)
8
Two screws (+BVTP 2.6
 
×
 8)
qd
Two insulators
7
Holder (BU) assy
qd
Two insulators
9
Two stoppers (BU)
5
Flat type wire (16 core)
Two spring (insulator), coils
Spring (insulator),
coil
Spring
(insulator),
coil
10
HCD-DX10/RG4SR/RG20/RG30T
2-8. CD BOARD, DRIVER BOARD, MOTOR BOARD AND ADDRESS SENSOR BOARD
9
 Pull-out the Table.
4
Two
 screws (+BVTP 2.6 
×
 8)
q;
Screw (+PTPWH 2.6
 
×
 8)
qa
Tray
1
Screw (+BVTP 2.6
 
×
 8)
qs
Screw (+BVTP 2.6
 
×
 8)
6
Flat type wire (8 core)
3
Flat type wire 
    (8 core)
8
MOTOR board
qd
ADDRESS SENSOR board
qf
Flat type wire (16 core)
qh
CD board
2
DRIVER board
5
Remove two solderings of turn motor (M721).
7
Connector
qg
Four screws
     (+BVTP 2.6
 
×
 8)

Download Sony HCD-DX10 / HCD-RG20 / HCD-RG30T / HCD-RG4SR / MHC-DX10 / MHC-RG20 / MHC-RG30T / MHC-RG4SR Service Manual (Repair Manual)

Here you can view online and download Sony HCD-DX10 / HCD-RG20 / HCD-RG30T / HCD-RG4SR / MHC-DX10 / MHC-RG20 / MHC-RG30T / MHC-RG4SR Service Manual in PDF. HCD-DX10 / HCD-RG20 / HCD-RG30T / HCD-RG4SR / MHC-DX10 / MHC-RG20 / MHC-RG30T / MHC-RG4SR service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony HCD-DX10 / HCD-RG20 / HCD-RG30T / HCD-RG4SR / MHC-DX10 / MHC-RG20 / MHC-RG30T / MHC-RG4SR 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.