MICROFILM
SERVICE MANUAL
MINI Hi-Fi COMPONENT SYSTEM
US Model
Canadian Model
HCD-RX66
E Model
Australian Model
HCD-GRX5
Model Name Using Similar Mechanism
HCD-H991AV
CD Mechanism Type
CDM38L-5BD29AL/
CDM38LH-5BD29AL
Base Unit Type
BU-5BD29AL
Optical Pick-up Type
KSS-213D/Q-NP
Model Name Using Similar Mechanism
NEW
Tape Transport Mechanism Type
TCM-230AWR1/
230PWR1
HCD-GRX5/RX66
HCD-GRX5/RX66 is the Amplifier, CD
player, Tape Deck and Tuner section in
MHC-GRX5/RX66.
Photo: HCD-RX66
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.
CD
Section
TAPE
DECK
Section
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS:
(U.S.A. model only)
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
with 6 ohm loads both channels driven, from 70 - 20,000 Hz; rates 60
watts per channel minimum RMS power, with no more than 0.9% total
harmonic distortion from 250 milliwatts to rated output.
Amplifier section
Canadian model:
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, 45 W)
Other models:
The following measured at AC 110, 220 V 50/60 Hz
DIN power output (rated)
50 + 50 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
65 + 65 watts
(6 ohms at 1 kHz, 10% THD)
The following measured at AC 120, 240 V 50/60 Hz
DIN power output (rated)
60 + 60 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
75 + 75 watts
(6 ohms at 1 kHz, 10% THD)
Peak music power output (reference)
1000 watts
Inputs
MD/VIDEO IN:
voltage 450 mV,
(phono jacks)
impedance 47 kilohms
MIX MIC: (phone jack)
sensitivity 1 mV, impedance 10
kilohms
Continued on next page
2
Specifications (continued)
Outputs
MD/VIDEO OUT:
voltage 250 mV,
(phono jacks)
impedance 1 kilohms
PHONES:
accepts headphones of 8 ohms
(stereo phone jack)
or more
SPEAKER:
accepts impedance of 6 to 16 ohms
SUPER WOOFER:
Voltage 1 V, impedance 1 kilohm
CD player section
System
Compact disc and digital audio system
Laser
Semiconductor laser (
=780nm)
Emission duration: continuous
Laser output
Max. 44.6
µW*
*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
Wow and flutter
±0.15% W.Peak (IEC)
0.1% W.RMS (NAB)
±0.2% W.Peak (DIN)
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
North American models:
530 - 1,710 kHz
(with the interval set at 10 kHz)
531 - 1,710 kHz
(with the interval set at 9 kHz)
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
North American models:
120 V AC, 60 Hz
Mexican model:
120 V AC, 50/60 Hz
Australian, and Israel models:
220 - 240 V AC, 50/60 Hz
Thai model:
220 - 240 V AC, 50/60 Hz
Other models:
110 - 120 V or 220 - 240 V AC,
50/60 Hz
Power consumption
U.S.A. model:
140 watts
Canadian model:
120 watts
Other models:
140 watts
Dimensions (w/h/d)
Approx. 280
× 335 × 380 mm
(111/8
× 131/8 × 15 in.)
Mass
U.S.A. model:
Approx. 8.8 kg (19 lbs. 6 oz.)
Canadian model:
Approx. 8.4 kg (18 lbs. 8 oz.)
Other models:
Approx. 9.4 kg (20 lbs. 12 oz.)
Supplied accessories:
AM loop antenna (1)
Remote RM-SR5 (1)
Batteries (2)
FM lead antenna (1)
Speaker cords (2)
Front speaker pads (8)
Design and specifications are subject to change without notice.
3
TABLE OF CONTENTS
1.
SERVICING NOTES ............................................... 3
2.
GENERAL
Location of Controls ....................................................... 6
Setting the Time .............................................................. 7
3.
DISASSEMBLY ......................................................... 8
4.
TEST MODE .............................................................. 11
5.
MECHANICAL ADJUSTMENTS ....................... 13
6.
ELECTRICAL ADJUSTMENTS
DECK Section ................................................................. 13
CD Section ...................................................................... 16
7.
DIAGRAMS ................................................................. 18
7-1. Block Diagram
CD MECHANISM DECK 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. Printed Wiring Boards CD Section ......................... 29
7-6. Schematic Diagram CD Section ............................... 31
7-7. Printed Wiring Board CD MOTOR Section ............ 33
7-8. Schematic Diagram CD MOTOR Section .............. 35
7-9. Printed Wiring Board TAPE DECK Section ........... 37
7-10. Schematic Diagram TAPE DECK Section .............. 39
7-11. Printed Wiring Board LEAF SW Section ............... 41
7-12. Schematic Diagram LEAF SW Section .................. 41
7-13. Printed Wiring Board MAIN Section ...................... 43
7-14. Schematic Diagram
MAIN Section (1/4) .................................................. 45
7-15. Schematic Diagram
MAIN Section (2/4) .................................................. 47
7-16. Schematic Diagram
MAIN Section (3/4) .................................................. 49
7-17. Schematic Diagram
MAIN Section (4/4) .................................................. 51
7-18. Printed Wiring Board PANEL Section .................... 53
7-19. Schematic Diagram PANEL Section ....................... 55
7-20. Printed Wiring Board CD-SW Section .................... 57
7-21. Schematic Diagram CD-SW Section ...................... 57
7-22. Printed Wiring Board HP Section ........................... 59
7-23. Schematic Diagram HP Section .............................. 59
7-24. Printed Wiring Board POWER AMP Section ......... 60
7-25. Schematic Diagram POWER AMP Section ............ 61
7-26. Printed Wiring Board
TRANSFORMER Section ........................................ 63
7-27. Schematic Diagram
TRANSFORMER Section ........................................ 64
7-28. IC Pin Function Description ........................................... 68
8.
EXPLODED VIEWS ................................................ 73
9.
ELECTRICAL PARTS LIST ............................... 82
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.
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 INTER-
LOCKS 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
ALTTIINA 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
LÉZERSUGÁRVESZÉLY
! KERÜLJE A BESUGÁRZÁST!
4
PART No.
MODEL IDENTIFICATION
Back Panel
MODEL
PART No.
RX66: US model
4-996-725-0
RX66: Canadian model
4-996-725-1
GRX5: Thai and Israel models
4-996-725-2
GRX5: E model
4-996-842-0
GRX5: Malaysia, Singapore and
4-996-842-1
South African models
GRX5: Saudi Arabia and Taiwan models
4-996-842-2
GRX5: Hong Kong model
4-996-842-3
GRX5: Australian model
4-996-842-4
GRX5: Mexican model
4-996-842-5
GRX5: Indonesian model
4-996-842-7
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.
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.
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 microampers.).
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" 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)
Fig. A.
Using an AC voltmeter to check AC leakage.
1.5 k
0.15
µF
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
5
HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF.
1 Remove the Case.
3 Pull-out the disc tray.
2 Turn the cam to the
direction of arrow.
NOTE FOR INSTALLATION (ROTARY ENCODER)
BU cam
Groove
Section A
Note:When attaching the Base unit, Insert the
section A into the groove of BU cam.
Note:When attaching the BU cam,
engage the Rotary encoder
switch as shown in the figure.