HCD-RX90
Table of contents
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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.
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
T ape Transport Mechanism T ype TCM-220WR2
CD
Section
Tape deck
Section
SPECIFICATIONS
* Dolby noise reduction manufactured
under license from Dolby Laboratories
Licensing corporation.
"DOLBY" and the double-D symbol a
are trademarks of Dolby Laboratories
Licensing Corporation.
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 60 – 13,000 Hz (±3 dB),
(DOLBY NR OFF) using Sony TYPE I casstte
60 – 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)
– Continued on next page –
Amplifier section
DIN power output (RX90)
80+80 watts
(8 ohms, at 1kHz, DIN)
Continuous RMS power output
RX90: 100+100 watts
(8ohms at 1kHz, 10% THD)
GR8: 90+90 watts
(8ohms at 1kHz, 10% THD)
Peak music power output
GR8: 1500 watts
Music power output
RX90: 160+160 watts
(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
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
SURROUND SPEAKER:
accepts impedance of 16
ohms.
SUPER WOOFER:
Voltage 1 V, impedance 1 kilo
ohm
CD player section
System Compact disc and digital
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.
Frequency response 2 Hz – 20 kHz (±0.5 dB)
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 4-986-845-1π
GR8 : MY model 4-986-845-2π
GR8 : E3, IA models 4-988-021-0π
GR8 : E2 model 4-988-021-1π
GR8 : SP model 4-988-021-2π
GR8 : TW, JE models 4-988-021-3π
GR8 : HK model 4-988-021-4π
GR8 : AUS model 4-988-021-5π
GR8 : MX model 4-988-021-6π
GR8 : EA4, TH, SAF models 4-988-021-7π
RX90 : AEP model (Made in Malaysia) 4-986-845-0π
RX90 :AEP (Made in Indonesia), AED,
G, UK models
4-986-982-0π
RX90 : EE, CIS model 4-986-982-1π
• Abbreviation
AED : Northern European
AUS : Australian
E2 : 120 V AC Area in E model
E3 : 240 V AC Area in E model
EA3 : Saudi Arabia
EA4 : Israeli
EE : East European
G : German
HK : Hong Kong
IA : Indonesia
JE : Tourist
MX : Mexican
MY : Malaysia
SAF : South African
SP : Singapore
TH : Thailand
TW : Taiw an
PARTS No.
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
EE and CIS models: 65.0 – 74.0 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
AM tuner section
Tuning range
RX90: MW: 531 – 1,602 kHz
(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)
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)
Aerial AM loop aerial
Aerial terminals External aerial terminal
Intermediate frequency 450 kHz
General
Power requirements
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
Power consumption
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)
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.
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.
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.
– 4 –
SERVICING NOTES
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, 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
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
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.
Flexible Circuit Board Repairing
• Keep the temperature of the 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.
– 5 –
SECTION 1
GENERAL
This section is extracted
from instruction manual.
– 6 –
– 7 –
– 8 –
– 9 –
– 10 –
– 11 –
– 12 –
– 13 –
– 14 –
– 15 –
– 16 –
– 17 –
– 18 –
– 19 –
– 20 –
– 21 –
– 22 –
– 23 –
– 24 –
– 25 –
• This set can be disassembled in the order shown below.
SECTION 2
DISASSEMBLY
FRONT PANEL SECTION
3
loading panel
4
three flat wires
(CN102, 205, 206)
5
screw
(BVTP 3
×
10)
6
four screws
(BVTT 3
×
6)
7
two claws
8
front panel section
2
Pull the tray
1
Turn the cam to
direction of the
arrow
A
.
Note: Follow the disassembly procedure in the numerical order given.
CASE
3
three screws
(BVTT 3
×
6)
4
Remove the case to
direction of the arrow.
2
screw
(case 3 TP2)
(3
×
10)
1
two screws
(case 3 TP2)
(3
×
8)
2
screw (case 3 TP2)
(3
×
10)
1
two screws
(case 3 TP2)
(3
×
8)
A
5
screw
(BVTP 3
×
10)
MAIN BOARD
(Page 27)
TRAY SECTION
(Page 28)
TAPE MECHANISM
DECK SECTION
(Page 26)
AUDIO BOARD
(Page 30)
CD MECHANISM
DECK SECTION
(Page 26)
BASE UNIT
(Page 27)
BD BOARD
(Page 29)
CAPSTAN MOTOR
(Page 30)
OPTICAL
PICK-UP
(Page 29)
SLED
MOTOR
(Page 29)
FRONT PANEL
SECTION
(Page 25)
CASE
(Page 25)
– 26 –
CD MECHANISM DECK SECTION
3
two screws
(BVTP 3
×
8)
2
flat wire
(CN202)
4
CD mechanism deck section
Note: The CD mechanism deck will
fall if three screws are removed.
Support it by hand, then remove
three screws.
T APE MECHANISM DECK SECTION
2
Open the
cassette lids.
3
three screws
(BVTP 2.6
×
8)
4
tape mechanism deck
section
1
Push the two buttons.
1
two connectors
(CN203, 204)
– 27 –
BASE UNIT
2
boss
1
two yoke bracket
3
base unit
1
connector
(CN901)
4
two screws
(BVTP 3
×
8)
5
connector
(CN101)
IC201
3
flat wire (CN201)
2
connector
(CN105)
MAIN BOARD
4
four screws
(BVTP 3
×
8)
6
main board
– 28 –
TRAY SECTION
1
Turn the cam to direction
of the arrow.
Note: When installing the tray, pull around the flat
wire to pass through the claw
A
and claw
B
,
as shown in the figure.
flat wire
3
flat wire
(CN705)
claw
B
claw
A
2
Pull the tray.
5
Removal the tray.
4
two claws
Note: When installing the tray, take care so that the collars (A) and
(B) are properly inserted into the slots.
collar
A
collar
B
slots
– 29 –
BD BOARD
4
flat wire
(CN101)
5
screw
(BVTP 2.6
×
8)
6
Removal
the four solders.
7
BD board
1
two screws
(PTPWH M2.6
×
6)
1
two screws
(PTPWH M2.6
×
6)
2
optical pick-up
section
3
two springs
limit switch
OPTICAL PICK-UP, SLED MOTOR
1
claw
2
sled shaft
3
optical pick-up
3
two springs
4
two screws
(P 2
×
3)
5
sled motor
– 30 –
AUDIO BOARD
CAPSTAN MOTOR
5
AUDIO board
4
four screws
(BTP 2.6
×
4)
1
connector
(CN651)
1
Break the soldering of
motor lead.
4
Removal the capstan motor
to direction of the arrow.
2
two screws
(BTP 2.6
×
8)
3
claw
5
Hang the
two belts.
2
two rivets
3
Break the soldering of two
flexible flat cables.
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