Read Sony HCD-GR8 / HCD-RX90 / MHC-GR8 / MHC-RX90 Service Manual online
AEP Model
UK Model
HCD-RX90
E Model
Australian Model
Tourist Model
HCD-GR8
SERVICE MANUAL
HCD-GR8/RX90
HCD-GR8/RX90 is the tuner, deck, CD and
amplifier section in MHC-GR8/RX90.
amplifier section in MHC-GR8/RX90.
Model Name Using Similar Mechanism
HCD-GR7/RX70
CD Mechanism Type
CDM38L-5BD29AL
Base Unit Name
BU-5BD29AL
Optical Pick-up Name
KSS-213D/Q-NP
Model Name Using Similar Mechanism
HCD-H881
Tape Transport Mechanism Type
TCM-220WR2
CD
Section
Section
Tape deck
Section
Section
SPECIFICATIONS
*
Dolby noise reduction manufactured
under license from Dolby Laboratories
Licensing corporation.
"DOLBY" and the double-D symbol
under license from Dolby Laboratories
Licensing corporation.
"DOLBY" and the double-D symbol
a
are trademarks of Dolby Laboratories
Licensing Corporation.
Licensing Corporation.
Signal-to-noise ratio More than 90 dB
Dynamic range
Dynamic range
More than 90 dB
CD OPTICAL DIGITAL OUT
(Square optical connector jack, rear panel)
Wavelength
(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 60 – 13,000 Hz (±3 dB),
(DOLBY NR OFF) using Sony TYPE I casstte
(DOLBY NR OFF) using Sony TYPE I casstte
60 – 14,000 Hz (±3 dB),
using Sony TYPE II cassette
using Sony TYPE II cassette
Wow and flutter
±0.15% W.Peak (IEC)
0.1% W.RMS (NAB)
±0.2% W.Peak (DIN)
0.1% W.RMS (NAB)
±0.2% W.Peak (DIN)
– Continued on next page –
Amplifier section
DIN power output (RX90)
80+80 watts
(8 ohms, at 1kHz, DIN)
(8 ohms, at 1kHz, DIN)
Continuous RMS power output
RX90:
RX90:
100+100 watts
(8ohms at 1kHz, 10% THD)
(8ohms at 1kHz, 10% THD)
GR8:
90+90 watts
(8ohms at 1kHz, 10% THD)
(8ohms at 1kHz, 10% THD)
Peak music power output
GR8:
GR8:
1500 watts
Music power output
RX90:
RX90:
160+160 watts
(8ohms at 1kHz, 10% THD)
(8ohms at 1kHz, 10% THD)
Inputs
VIDEO/MD IN (phono jacks):
voltage 250 mV, impedance
47 kilohms MIX MIC (phone
jack): sensitivity 1 mV,
impedance 10 kilohms
voltage 250 mV, impedance
47 kilohms MIX MIC (phone
jack): sensitivity 1 mV,
impedance 10 kilohms
Outputs
VIDEO/MD OUT (phone
jacks): voltage 250 mV
impedance 1 kilohms
PHONES (stereo phone jack):
accepts headphones of 8 ohms
or more.
SPEAKER:
accepts impedance of 8 to 16
ohms
jacks): voltage 250 mV
impedance 1 kilohms
PHONES (stereo phone jack):
accepts headphones of 8 ohms
or more.
SPEAKER:
accepts impedance of 8 to 16
ohms
SURROUND SPEAKER:
accepts impedance of 16
ohms.
SUPER WOOFER:
Voltage 1 V, impedance 1 kilo
ohm
accepts impedance of 16
ohms.
SUPER WOOFER:
Voltage 1 V, impedance 1 kilo
ohm
CD player section
System
Compact disc and digital
audio system
audio system
Laser
Semiconductor laser
(
(
λ
=780 nm)
Emission duration: continuous
Laser output
Max. 44.6 µW*
*This output is the value
measured at a distance of 200
mm from the objective lens
surface on the Optical Pick-up
Block with 7 mm aperture.
*This output is the value
measured at a 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
Wavelength
780 – 790 nm
Photo: HCD-RX90
MINI Hi-Fi COMPONENT SYSTEM
Ver 1.1 2002.06
9-960-881-12
Sony Corporation
2002F0500-1
Home Audio Company
C
2002.06
Published by Sony Engineering Corporation
– 2 –
MODEL IDENTIFICATION
– BACK PANEL –
MODEL
PARTS NO.
GR8 : EA3 model
4-986-845-1
π
GR8 : MY model
4-986-845-2
π
GR8 : E3, IA models
4-988-021-0
π
GR8 : E2 model
4-988-021-1
π
GR8 : SP model
4-988-021-2
π
GR8 : TW, JE models
4-988-021-3
π
GR8 : HK model
4-988-021-4
π
GR8 : AUS model
4-988-021-5
π
GR8 : MX model
4-988-021-6
π
GR8 : EA4, TH, SAF models
4-988-021-7
π
RX90 : AEP model (Made in Malaysia)
4-986-845-0
π
RX90 : AEP (Made in Indonesia), AED,
G, UK models
4-986-982-0
π
RX90 : EE, CIS model
4-986-982-1
π
• Abbreviation
AED : Northern European
AUS : Australian
E2
AUS : Australian
E2
: 120 V AC Area in E model
E3
: 240 V AC Area in E model
EA3 : Saudi Arabia
EA4 : Israeli
EE
EA4 : Israeli
EE
: East European
G
: German
HK
: Hong Kong
IA
: Indonesia
JE
: Tourist
MX : Mexican
MY : Malaysia
SAF : South African
SP
MY : Malaysia
SAF : South African
SP
: Singapore
TH
: Thailand
TW : Taiwan
PARTS No.
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
EE and CIS models:
EE and CIS models:
65.0 – 74.0 MHz
87.5 – 108.0 MHz
87.5 – 108.0 MHz
Other models:
87.5 – 108.0 MHz
Aerial
FM lead aerial
Aerial terminals
75 ohm unbalanced
Intermediate frequency 10.7 MHz
UKV tuner section (EE and CIS models)
Tuning range
65.0 – 74.0 MHz
Polar stereo
Polar stereo
AM tuner section
Tuning range
RX90:
RX90:
MW: 531 – 1,602 kHz
(with interval set at 9kHz)
LW: 153 – 279 kHz
(with interval set at 3kHz)
(with interval set at 9kHz)
LW: 153 – 279 kHz
(with interval set at 3kHz)
MX, AUS, EA4 and TH models:
531 – 1,602 kHz
(with the AM tuning interval st at 9 kHz)
530 – 1,710 kHz
(with the AM tuning interval set at 10 kHz)
(with the AM tuning interval st at 9 kHz)
530 – 1,710 kHz
(with the AM tuning interval set at 10 kHz)
Other models
MW: 531 – 1,602 kHz
(With the MW tuning interval set at 9 kHz)
530 – 1,710 kHz
(With the MW tuning interval set 10 kHz)
SW: 5.95 – 17.9 MHz
(with the SW tuning interval set at 5 kHz)
(With the MW tuning interval set at 9 kHz)
530 – 1,710 kHz
(With the MW tuning interval set 10 kHz)
SW: 5.95 – 17.9 MHz
(with the SW tuning interval set at 5 kHz)
Aerial
AM loop aerial
Aerial terminals
External aerial terminal
Intermediate frequency 450 kHz
General
Power requirements
RX90:
RX90:
220 – 230 V AC, 50/60 Hz
MX model:
120 V AC, 50/60 Hz
MY and AUS models:
220 – 240 V AC, 50/60 Hz
TH model:
220 V AC, 50 Hz
Other models:
110 – 120 V or 220 – 240 V
AC, 50/60 Hz Adjustable with voltage selector
AC, 50/60 Hz Adjustable with voltage selector
Power consumption
RX90:
RX90:
230 watts
GR8:
220 watts
Mass:
Approx. 9.5 kg
Supplied accessories:
AM loop aerial (1)
Remote RM-SD80 (1)
Sony SUM-3 (NS)
Batteries (2)
FM lead aerial (1)
Speaker cords (4)
Remote RM-SD80 (1)
Sony SUM-3 (NS)
Batteries (2)
FM lead aerial (1)
Speaker cords (4)
Design and specifications are subject to change without notice.
– 3 –
CAUTION
Use of controls or adjustments or performance of
procedures other than those specified herein may
result in hazardous radiation exposure.
procedures other than those specified herein may
result in hazardous radiation exposure.
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.
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
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.
– 4 –
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
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.
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, ob-
serve from more than 30 cm away from the objective lens.
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission, ob-
serve from more than 30 cm away from the objective lens.
TABLE OF CONTENTS
Servicing Notes ..........................................................................
4
1.
GENERAL
....................................................................
5
2.
DISASSEMBLY
.......................................................... 25
3.
TEST MODE
................................................................ 31
4.
MECHANICAL ADJUSTMENTS
......................... 33
5.
ELECTRICAL ADJUSTMENTS
Deck Section ..................................................................... 33
Tuner Section .................................................................... 36
CD Section ........................................................................ 39
Tuner Section .................................................................... 36
CD Section ........................................................................ 39
6.
DIAGRAMS
6-1.
Printed Wiring Board –Tuner Section– ............................ 42
6-2.
Schematic Diagram –Tuner Section– ............................... 45
6-3.
Printed Wiring Board –CD Section– ................................ 49
6-4.
Schematic Diagram –CD Section– ................................... 51
6-5.
Printed Wiring Boards –CD Motor Section– .................... 53
6-6.
Schematic Diagram –CD Motor Section– ........................ 55
6-7.
Printed Wiring Boards –Deck Section– ............................ 57
6-8.
Schematic Diagram –Deck Section– ................................ 59
6-9.
Schematic Diagram –Main /Power Section– .................... 63
6-10. Printed Wiring Boards –Main /Power Section– ................ 67
6-11. Schematic Diagram –Panel Section– ................................ 71
6-12. Printed Wiring Boards –Panel Section– ........................... 75
6-13. Printed Wiring Board –Power Amp Section– ................... 79
6-14. Schematic Diagram –Power Amp Section– ...................... 80
6-15. IC Pin Function Description ............................................. 88
6-11. Schematic Diagram –Panel Section– ................................ 71
6-12. Printed Wiring Boards –Panel Section– ........................... 75
6-13. Printed Wiring Board –Power Amp Section– ................... 79
6-14. Schematic Diagram –Power Amp Section– ...................... 80
6-15. IC Pin Function Description ............................................. 88
7.
EXPLODED VIEWS
................................................. 92
8.
ELECTRICAL PARTS LIST
................................... 103
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.
aged by heat.
Flexible Circuit Board Repairing
•
Keep the temperature of the soldering iron around 270 ˚C during
repairing.
repairing.
•
Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
circuit board (within 3 times).
•
Be careful not to apply force on the conductor when soldering or
unsoldering.
unsoldering.
