Sony TMRRF-90 Service manual
SRS-RF90R/RF90RK/
TMR-RF90
SERVICE MANUAL
Ver 1.0 2002. 02
SRS-RF90R TMR-RF90
• SRS-RF90RK is composed of following models.
COMPONENT MODEL NAME
SRS-RF90RK
Wireless Active Speaker SRS-RF90R
RF Transmitter TMR-RF90
• SRS-RF90R is sold as single model too.
SPECIFICATIONS
General
Carrier frequency
Channel Ch1, Ch2, Ch3
Modulation FM stereo
Transmitter (SRS-RF90RK only)
Power source DC 9 V: supplied AC power adaptor
Audio input phono jacks/stereo mini jack
Input impedance 33 kΩ/51 Ω switchable
Dimensions Approx. 136 × 136 × 100 mm
Mass Approx. 146 g (5.2 oz.)
Speaker system SRS-RF90RK, SRS-RF90R
Speaker system 2 way magnetically shielded
Enclosure type Bass reflex
Speaker units tweeter: 30 mm × 2
Power source DC 9 V: supplied AC adaptor (AC-S906T)
Rated output Built in amplifiers total 4W (while
Dimensions Approx. 234 × 300 × 126 mm
Mass Approx. 905 g (31.9 oz.) incl.
913.5 – 914.5 MHz
(AC-S901)
(6 × 6 × 4
woofer: 57 mm × 1
using the supplied AC adaptor)
* power output:
( 9
built-in rechargeable battery
1
/3 in.) (w/h/d)
Tweeter: 0.25W + 0.25W < 10%
T.H.D., 5 kHz 24 ohms
Woofer: 3.5W < 10% T.H.D., 1kHz
6 ohms
1
/4 × 11 7/8 × 5 in.) (w/h/d)
US Model
Canadian Model
Built-in Ni-Cd rechargeable battery
Voltage 7.2 V
Capacity 700 mAh
Duration time Approx. 4 hours
Charging time Approx. 28 hours (from fully
Supplied accessory
The transmitter (SRS-RF90RK only)
AC adaptor (2 for SRS-RF90RK) (1 for SRS-RF90R)
Connecting cord phono plug-stereo miniplug (1m) (1)
Operating instructions (1)
Design and specifications are subject to change without
notice.
(with the 10 mW reflector light OFF)
discharged to fully charged)
9-873-530-01
2002B1600-1
© 2002.02
WIRELESS STEREO SPEAKER SYSTEM
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
SRS-RF90R/RF90RK/TMR-RF90
TABLE OF CONTENTS
1. GENERAL
·········································································· 4
2. DISASSEMBLY
2-1. Grille bracket ································································· 5
2-2. Front cabinet section, Rear cabinet section ··················· 6
2-3. Nickel cadmium battery, Speaker (057F022) ················ 6
2-4. Cabinet (Top section), JACK Board, RX board ············ 7
2-5. CHARGE board, SW board ·········································· 7
2-6. AMP board, MEGABASS board,
REFLECTOR board ······················································ 8
2-7. Drive (030F034) ···························································· 8
3. ELECTRICAL ADJUSTMENTS ································· 9
4. DIAGRAMS······································································ 12
4-1. Block Diagrams
– SRS-RF90R – ··························································· 13
– TMR-RF90 – ···························································· 14
4-2. Printed Wiring Boards (SRS-RF90R)
– RX Bord Section – ··················································· 15
4-3. Schematic Diagram (SRS-RF90R)
– RX Bord Section – ··················································· 16
4-4. Printed Wiring Boards (SRS-RF90R)
– AMP Bord Section – ················································ 17
4-5. Schematic Diagram (SRS-RF90R)
– AMP Bord Section – ················································ 18
4-6. Printed Wiring Board (TMR-RF90) ···························· 19
4-7. Schematic Diagram (TMR-RF90) ······························· 20
5. EXPLODED VIEWS
5-1. Front Cabinet Section (SRS-RF90R) ·························· 21
5-2. Rear Cabinet Section (SRS-RF90R) ··························· 22
5-3. TMR-RF90 ·································································· 23
6. ELECTRICAL PARTS LIST ······································· 24
2
Leading about of wiring
( Front side )
SRS-RF90R/RF90RK/TMR-RF90
SERVICING NOTE
( Rear side )
cushion
tape
cushion
Note : In the place of a mark, as shown in figure, the wires are taken about.
3
SRS-RF90R/RF90RK/TMR-RF90
SRS-RF90R
SECTION 1
GENERAL
This section is extracted from
instruction manual.
1 Connect the speaker system to a power
source.
Tweeter
(right)
Tweeter
(left)
AC power adaptor (supplied)
To an AC
outlet
2 The CHARGE indicator on the speaker
system will light up to indicate that the
battery is being charged.
CHARGE indicator
TUNING
button
POWER switch
OFF y ON
POWER indicator
The switch of the
reflector light
High
VOLUME control
Low
1 First turn on the audio/video equipment
and start playing.
The power indicator of the transmitter
will light up.
2 Turn on the speaker system.
The power indicator of the speaker
system will light in red.
3 Select the radio frequency with the
CHANNEL selector.
123
CHANNEL
TMR-RF90
A To connect to a LINE OUT or REC OUT B To connect to headphones jack
Transmitter
to AUDIO IN
B jack
Left channel
(white)
OFF ON
FILTERNOISE
DC IN 9V
RBAL
AUDIO IN
Connecting cord
(supplied)
Right channel
(red)
to LINE OUT or REC
OUT jacks
Stereo system, VCR, etc.
123
CHANNEL
Transmitter
OFF ON
FILTERNOISE
Right channel
(red)
Connecting cord
(supplied)
Unimatch plug
adaptor (not
supplied)
to headphones
jack (stereo
phone jack)
RBAL
AUDIO IN
to AUDIO IN
A jacks
DC IN 9V
Left channel
(white)
to headphones
or LINE OUT jack
(stereo mini jack)
Discman, MD,
WALKMAN*, VCR,
etc.
123
CHANNEL
4
DISASSEMBLY
2
jack
holder
4
grille bracket
(Cautions)
(Cautions)
Please also exchange grille (Dia. 57) together at a Grille bracket.
(A grille (Dia. 57) is unreproducible.)
3
grille (Dia. 57)
(Cautions)
1
three screws
(+P 3
×
10)
The cautions at the time of attachment :
When you attach a grille (Dia. 57), please unite
a position by cut of a grille (Dia. 57).
Note : Disassemble the unit in the order as shown below.
SET(SRS-RF90R)
SRS-RF90R/RF90RK/TMR-RF90
SECTION 2
GRILLE BRACKET
(Page 5)
NICKEL CADMIUM BATTERY,
SPEAKER(057F022)
(Page 6)
FRONT CABINET SECTION,
REAR CABINET SECTION
CABINET(TOP SECTION),
JACK BOARD, RX BOARD
CHARGE BOARD,
SW BOARD,
Note : This set can be disassembled in the order shown below.
2-1. Grille Bracket
(Page 6)
(Page 7)
(Page 7)
AMP BOARD,
MEGABASS BOARD,
REFRECTOR BOARD
(Page 8)
DRIVE(030F034)
(Page 8)
5
SRS-RF90R/RF90RK/TMR-RF90
2-2. Front Cabinet Section, Rear Cabinet Section
9
front cabinet section
5
stand
8
connector
(CN203)
rear cabinet section
6
eight screws
(+BVTP 3
1
reflector
×
12)
4
two screws
×
(+P 3
10)
2-3. Nickel Cadmium Battery, Speaker (057F022)
3
retainer board
4
nickel. cadmium battery
7
connector
(CN802)
3
jack holder
1
screws
(+BVTP 3
5
t
wo screws
(+BVTP 3
6
2
three screws
(+P 3
×
10)
×
10)
×
10)
speaker (057F022)
2
two claws
front cabinet
6
2-4. Cabinet (Top Section), JACK board, RX board
d
)
5
(+BVTP 3
3
power button
6
cabinet
(top section)
7
connector (CN801)
two screws
×
10)
1
connector (CN302)
2
connector
(CN301)
SRS-RF90R/RF90RK/TMR-RF90
9
screw (DIA. 12)
q;
JACK board
8
connector
(CN804)
qa
connector
(CN101)
4
connector (CN304)
2-5. CHARGE board, SW board
3
CHARGE board
1
screw
(+P 2.6
×
4)
rear cabinet
qs
2
connector (CN303
antenna
qd
RX boar
4
two screws
(+P 2.6
top cover section
×
6)
5
SW board
7
SRS-RF90R/RF90RK/TMR-RF90
)
2-6. AMP board, MEGABASS board, REFLECTOR board
7
Remove eight solderings.
8
MEGABASS board
9
connector (CN304)
2
connector (CN202)
1
power button
3
screw
(+P 2.6
×
6)
6
AMP board
q;
screw
(+P 2.6
qa
REFLECTOR board
×
6)
5
connector (CNP201
2-7. Drive (030F034)
1
screw
(+BVTP 3
×
10)
2
screw
(+P 2.6
×
6)
8
screw
(+BVTP 3
9
screw
(+P 2.6
×
×
6)
10)
3
Remove two solderings.
qa
herness
4
6
7
drive (030F034)
5
grille (DIA. 30)
connector (CNP202)
4
herness
MDD holder (R)
qf
drive (030F034)
qd
MDD holder (L)
q;
Remove the soldering.
qs
grille (DIA. 30)
1
When you remove a Cautions : (R) side, please start with
, when you remove the (L) side, please start with 8.
8
t
digtal voltmeter
(AC range)
TMR-RF90
SRS-RF90R/RF90RK/TMR-RF90
SECTION 3
ELECTRICAL ADJUSTMENTS
Setting :
AF signal
generator
set
TMR-RF90
L-CH (J402)
Telescopic
antenna
Frequency counter
8 cm
set
TMR-RF90
Transmission Frequency Check and Adjustment
1. Set the NOISE FILTER switch to off.
2. Input a signal of 1 kHz 40 mVrms to only the L-CH (J402).
3. Connect a telescopic antenna to the frequency counter input and
extend the antenna to a length of approximately 8 cm.
4. Place TX board close to the frequency counter, then measure the
frequencies of CH1, CH2 and CH3 and make sure the values are
as follows:
CH1 : 913.5 MHz ± 200 kHz
CH2 : 914.0 MHz ± 200 kHz
CH3 : 914.5 MHz ± 200 kHz
Modulation Check and Adjustment
1. Set the channel to CH2.
2. An electric wave is output for 5or 10 minutes when off to on a
power supply (Power indicator will on).
3. Measure the center terminal of RV403 using an digital volt-meter
(AC range) and make sure the value is 2 to 2.5mVrms.
If the measured value is other than the specified value, adjust to
2 to 2.5mVrms by turning the RV403 on the TX board.
Connection points and Adjustment Location :
TX BOARD
←
CH2 ←CH1
CH3
S402
RV403
(Component side)
(L-CH) (R-CH)
J402
VCO UNIT
Hole
When the frequency is not satisfied the specified value, set the
CHANNEL switch (S402) to CH2, then adjust the value of the
frequency counter to 914.0 MHz by trimmer capacitor in the VCO
unit.
Standard value :913.9MHz to 914.1MHz
When completed with replacement, recheck the
frequencies of CH1, CH2 and CH3.
RV403: Modulation adjustment
TX BOARD
Trimmer : Transmission
frequency adjustmen
(Conductor side)
IC402
9
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