DOWNLOAD Sony HCD-GRX50 / HCD-R770 / HCD-RXD7 / MHC-GRX50 / MHC-R770 / MHC-RXD7 Service Manual ↓ Size: 6.19 MB | Pages: 71 in PDF or view online for FREE

Model
HCD-GRX50 HCD-R770 HCD-RXD7 MHC-GRX50 MHC-R770 MHC-RXD7
Pages
71
Size
6.19 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-grx50-hcd-r770-hcd-rxd7-mhc-grx50-mhc-r770-mhc.pdf
Date

Sony HCD-GRX50 / HCD-R770 / HCD-RXD7 / MHC-GRX50 / MHC-R770 / MHC-RXD7 Service Manual ▷ View online

MICROFILM
SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
HCD-GRX50/R770/RXD7
Photo: HCD-GRX50
Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol 
a
 are trade-
marks of Dolby Laboratories Licensing Corporation.
Canadian Model
HCD-RXD7
AEP Model
HCD-R770/RXD7
UK Model
HCD-R770
E Model
Australian Model
HCD-GRX50
HCD-GRX50/R770/RXD7 are the Ampli-
fier, CD player, Tape Deck and Tuner
section in HMC-GRX50/R770/RXD7.
SPECIFICATIONS
Amplifier section
Canadian model:
Continuous RMS power output (reference)
70 + 70 watts
(6 ohms at 1 kHz, 10% THD)
Total harmonic distortion less than 0.07%
(6 ohms at 1 kHz, 45 W)
European and Russian models:
DIN power output (rated)
80 + 80 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
100 + 100 watts
(8 ohms at 1 kHz, 10% THD)
Music power output (reference)
170 + 170 watts
(6 ohms at 1 kHz, 10% THD)
Other models:
The following measured at AC 120, 220, 240 V 50/60 Hz
DIN power output (rated)
110 + 110 watts
(8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
140 + 140 watts
(8 ohms at 1 kHz, 10% THD)
– Continued on next page –
Model Name Using Similar Mechanism
NEW
CD Mechanism Type
CDM38LH-5BD32L
Base Unit Name
BU-5BD32L
Optical Pick-up Name
KSS-213D/Q-NP
Model Name Using Similar Mechanism
NEW
Tape Transport Mechanism Type
TCM-230AWR2
CD
Section
Tape deck
Section
– 2 –
Specifications (continued)
Inputs
MD/VIDEO (AUDIO) IN:
voltage 450 mV/250mV,
(phono jacks)
impedance 47 kilohms
MIX MIC: (phone jack)
sensitivity 1 mV, impedance 10
kilohms
Outputs
MD OUT:
voltage 250 mV,
(phono jacks)
impedance 1 kilohms
PHONES:
accepts headphones of 8 ohms
(stereo phone jack)
or more
SPEAKER:
Canadian model:
accepts impedance of 6 to 16 ohms
Other models:
accepts impedance of 8 to 16 ohms
SUPER WOOFER (GRX50/RXD7: Canadian models):
Voltage 1 V, impedance 1 kilohm
CD player section
System
Compact disc and digital audio system
Laser
Semiconductor laser (
λ
=780nm)
Emission duration: continuous
Laser output
Max. 44.6 
µ
W*
*This output is the value measured at
distance of 200 mm from the objective
lens surface on the Optical Pick-up
Block with 7 mm aperture.
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
CD OPTICAL DIGITAL OUT
(Square optical connector jack, rear panel)
Wavelength
600 nm
Output Level
-18 dBm
Tape player section
Recording system
4-track 2-channel stereo
Frequency response
40 - 13,000 Hz (±3 dB),
(DOLBY NR OFF)
using Sony TYPE I cassette
40 - 14,000 Hz (±3 dB),
using Sony TYPE II cassette
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
UKV tuner section (3 band (FM-AM-UKV) models only)
Tuning range
65.0 - 74.0 MHz
Stereo Plus
AM tuner section
Tuning range
2 Band type:
Canadian model:
530 - 1,710 kHz
(with the interval set at 10 kHz)
531 - 1,710 kHz
(with the interval set at 9 kHz)
European and Russian 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)
3 Band type:
Middle Eastern models:
MW:
531 - 1,602 kHz
(with the interval set at 9 kHz)
SW:
5.95 - 17.90 MHz
(with the interval set at 5 kHz)
Other models:
MW:
531 - 1,602 kHz
(with the interval set at 9 kHz)
530 - 1,710 kHz
(with the interval set at 10 kHz)
SW:
5.95 - 17.90 MHz
(with the interval set at 5 kHz)
Antenna
AM loop antenna
Antenna terminals
External antenna terminal
Intermediate frequency
450 kHz
General
Power requirements
Canadian model:
120 V AC, 60 Hz
European and Russian models:
230 V AC, 50/60 Hz
Mexican model:
120 V AC, 50/60 Hz
Australian model:
230 - 240 V AC, 50/60 Hz
Israel and Thai models:
220 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
Canadian model:
130 watts
European and Russian models:
165 watts
Other models:
160 watts
Dimensions (w/h/d)
Approx. 280 
×
 340 
×
 395 mm
(11
1
/
×
 13
1
/
2
 
× 
15
5
/
8
 in.)
Mass
Canadian model:
Approx. 9.2 kg
European and Russian models:
Approx. 10.1 kg
Other models:
Approx. 10 kg
Supplied accessories:
AM loop antenna (1)
Remote Commander (1)
Batteries (2)
FM lead antenna (1)
Speaker cords (2)
Front speaker pads (8)
Design and specifications are subject to change without notice.
ATTENTION  AU  COMPOSANT  AYANT  RAPPORT
À  LA  SÉCURITÉ!
LES  COMPOSANTS  IDENTIFIÉS  PAR  UNE  MARQUE  
!
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.
SAFETY-RELATED  COMPONENT  WARNING!!
COMPONENTS  IDENTIFIED  BY  MARK  
!
  OR  DOTTED
LINE  WITH  MARK  
!
  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.
– 3 –
1.
SERVICING  NOTES
...............................................
3
2.
GENERAL
Location of Controls .......................................................
6
Setting the Time ..............................................................
7
3.
DISASSEMBLY
.........................................................
8
4.
TEST  MODE
.............................................................. 11
5.
MECHANICAL  ADJUSTMENTS
....................... 14
6.
ELECTRICAL  ADJUSTMENTS
DECK Section ................................................................. 14
CD Section ...................................................................... 17
7.
DIAGRAMS
7-1. Block Diagram – CD SERVO Section – ........................ 19
7-2. Block Diagram – TAPE DECK Section – ...................... 21
7-3. Block Diagram – MAIN Section – ................................. 23
7-4. Block Diagram – DISPLAY/KEY CONTROL/
POWER SUPPLY Section – ........................................... 25
7-5. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 27
7-6. Printed Wiring Board – BD Board – .............................. 29
7-7. Schematic Diagram  – BD Board – ................................ 31
7-8. Printed Wiring Boards  – CD MOTOR Section – .......... 33
7-9. Schematic Diagram  – CD MOTOR Section – .............. 35
7-10. Printed Wiring Board  – AUDIO Board – ...................... 37
7-11. Schematic Diagram  – AUDIO Board – ......................... 39
7-12. Printed Wiring Board  – LEAF SW Board – .................. 41
7-13. Schematic Diagram  – LEAF SW Board – ..................... 41
7-14. Printed Wiring Board  – MAIN Board – ........................ 43
7-15. Schematic Diagram   – MAIN Board (1/4) – ................. 45
7-16. Schematic Diagram  – MAIN Board (2/4) – .................. 47
7-17. Schematic Diagram  – MAIN Board (3/4) – .................. 49
7-18. Schematic Diagram  – MAIN Board (4/4) – .................. 51
7-19. Printed Wiring Board  – PANEL Board – ...................... 53
7-20. Schematic Diagram  – PANEL Board – ......................... 55
7-21. Printed Wiring Board  – CD SW Board – ...................... 57
7-22. Schematic Diagram  – CD SW Board – ......................... 58
7-23. Printed Wiring Boards
– TRANSFORMER Section – ........................................ 61
7-24. Schematic Diagram
– TRANSFORMER Section – ........................................ 63
7-25. IC Pin Function Description ........................................... 67
8.
EXPLODED  VIEWS
................................................ 73
9.
ELECTRICAL  PARTS  LIST
............................... 82
TABLE  OF  CONTENTS
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.
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.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• 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
CAUTION
Use of controls or adjustments or performance of procedures
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.
Laser component in this product is capable of emitting radiation
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.
VORSICHT :
UNSICHTBARE  LASERSTRAHLUNG,  WENN 
ABDECKUNG  GEÖFFNET  UND  SICHEREITSVERRIEGELUNG 
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! 
SECTION  1
SERVICING  NOTES
– 4 –
MODEL
PART No.
Argentine model
4-214-442-0
π
Israel and Thai models
4-214-442-6
π
120 V AC Area in E model
4-215-168-0
π
Canadian model
4-215-168-1
π
R770: AEP, UK, German and
4-215-168-2
π
North European models
RXD7: CIS model
4-215-168-3
π
R770: CIS model
4-215-168-4
π
RXD7: AEP, German and
4-215-168-5
π
North European models
240 V AC Area in E model
4-215-168-6
π
Saudi Arabia model
4-215-168-7
π
Singapore model
4-215-168-8
π
Mexican model
4-215-168-9
π
Australian model
4-220-083-0
π
Taiwan model
4-220-083-1
π
Korean model
4-220-083-2
π
PART No.
MODEL  IDENTIFICATION
– Rear Panel –
Page of 71
Display

Sony HCD-GRX50 / HCD-R770 / HCD-RXD7 / MHC-GRX50 / MHC-R770 / MHC-RXD7 Service Manual ▷ Download

  • DOWNLOAD Sony HCD-GRX50 / HCD-R770 / HCD-RXD7 / MHC-GRX50 / MHC-R770 / MHC-RXD7 Service Manual ↓ Size: 6.19 MB | Pages: 71 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony HCD-GRX50 / HCD-R770 / HCD-RXD7 / MHC-GRX50 / MHC-R770 / MHC-RXD7 in PDF for free, which will help you to disassemble, recover, fix and repair Sony HCD-GRX50 / HCD-R770 / HCD-RXD7 / MHC-GRX50 / MHC-R770 / MHC-RXD7 Audio. Information contained in Sony HCD-GRX50 / HCD-R770 / HCD-RXD7 / MHC-GRX50 / MHC-R770 / MHC-RXD7 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.