Sony TMRRF-815-R Service manual

TMR-RF815R

SERVICE MANUAL

Ver 1.0 2000. 06

TMR-RF815R is the component model block one in the MDR-RF815RK.

COMPONENT MODEL NAME FOR MDR-RF815RK

Headphones MDR-RF815R
Transmitter TMR-RF815R

AEP Model

UK Model

SPECIFICATIONS

General

Carrier frequency

863.5 – 864.5 MHz
Channel Ch1, Ch2, Ch3
Modulation FM stereo
Frequency response

20 – 20,000 Hz

Transmitter

Power source DC 9 V: supplied AC power

adaptor

Audio input phono jacks/stereo mini jack
Dimensions Approx. 150 mm dia × 108 mm

(6 × 4 1/3 in.) (w/h)

Mass Approx. 190 g (6.2 oz.)

Design and specifications are subject to change without
notice.

TRANSMITTER

Setting up the

SECTION 1

GENERAL

A To connect to a headphones jack

This section is extracted
from instruction manual.

transmitter
1

Connect the transmitter to audio/video
equipment. Select one of the hookups
below depending on the jack type:

Transmitter

OFF ON

FILTERNOISE

Right channel
(red)

Connecting cord
(supplied)

Unimatch plug
adaptor
(supplied)

to headphones
jack (stereo
phone jack)

RBAL

AUDIO IN

CD Walkman,
MD Walkman,
WALKMAN*,
VCR, etc.

to AUDIO IN
A jacks

DC IN 9V

123

CHANNEL

Left channel
(white)

to headphones
jack (stereo
mini jack)

SAFETY CHECK-OUT

After correcting the original service problem, perform the following
safety checks before releasing the set to the customer.

1. Check the area of your repair for unsoldered or poorly­soldered connections. Check the entire board surface
for solder splashes and bridges.

2. Check the interboard wiring to ensure that no wires are
"pinched" or contact high-wattage resistors.

3. Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair.
Point them out to the customer and recommend their
replacement.

4. Look for parts which, through functioning, show obvious
signs of deterioration. Point them out to the customer
and recommend their replacement.

5. Check the B+ voltage to see it is at the values specified.

6. 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

— 2 —

SECTION 2

r

DISASSEMBLY

Note : Follow the disassembly procedure in the numerical order given.

2-1. CABINET (UPPER)

2

Cabinet (upper)

1

Four screws (P 2

× 8)

2-2. TX-BASE BOARD

2

TX-BASE board

Cabinet assy, lowe

1

— 3 —

SECTION 3

ELECTRICAL ADJUSTMENTS

Setting :

AF signal
generator

set

TMR-RF815R

L-CH (J402)

Telescopic
antenna

Frequency counter

8 cm

set

TMR-RF815R

Send Frequency Check

1. Set the noise filter SW 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-BASE board close to the frequency counter , then mea­sure the frequencies of CH1, CH2 and CH3 and make sure the
values are as follows:

CH1 : 863.5 MHz ± 40 kHz
CH2 : 864.0 MHz ± 40 kHz
CH3 : 864.5 MHz ± 40 kHz

Pilot signal Modulation Check and Adjustment

1. Set the channel to CH2.

2. No signal input (The operating time in this case is limited to 4
or 5 minutes.)

3. Measure the movable terminal of RV403 using an digital volt­meter (AC range) and make sure the v alue is 1.6mVrms ± 0.1mV.
If the measured value is other than the specified value, adjust to

1.6mVrms ± 0.1mV by turning the RV403 on the TX-BASE
board.

Connection points and Adjustment Location :

[TK-BASE BOARD] (Component side)

CH3

←

CH2 ←CH1

S402

RV403

(L-CH) (R-CH)

J402

VCO UNIT

When the frequency is not satisfied the specified v alue, exchange
vco unit. When completed with replacement, recheck the
frequecies of CH1, CH2 and CH3.

— 4 —

4-1. BLOCK DIAGRAM

J401

B

AUDIO IN

J402

L

A

R R-CH

R-CH

S401

NOISE FILTER

OFF

|

ON

NOISE

FILTER

SECTION 4
DIAGRAMS

IC401

INPUT

AMP

LPF

R-CH

IC403

STEREO MPX

CH1

1 9

AMP

CH2

14

AMP

TIME

DEVISION

MPX

BUFFER

OSC
AMP

X401

38kHz

BUFFER

DIVIDER

76

TMR-RF815R

ANT401

RV403

MOD IN

8

VCO UNIT

ANT

T-OUT

IC405(2/2)

POWER OFF

DET

D402

IC402

5V

+5V
REG

SWITCH

Q404

D401

POWER

CHG

CHARGE

J404

DC IN 9V

B+

DI

CL

CE

IC405(1/2)

• Signal path.

16

: AUDIO

BUFFER

Q401

RECT

D404,405

INPUT

DET

15

13101211

DI

CL

CE

IC404

VCO CONTROLLER

679

1

2

3

VS

5V

CHANNEL

16

S402

2V

D408

+4V

Q402

Note on Printed Wiring Board:

• X : parts extracted from the component side.

• b : Pattern from the side which enables seeing.

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or
less are not indicated except for electrolytics and tantalums.

• All resistors are in Ω and 1/

f

•

: internal component.

4

W or less unless otherwise specified.

• A : B+ Line.

• H : adjustment for repair.

• Power voltage is dc 9 V and fed with regulated dc power supply
from battery terminal.

• V oltages are dc with respect to ground under no-signal conditions .

• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production toler­ances.

• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production toler­ances.

• Circled numbers refer to waveforms.

• Signal path.
L: AUDIO

— 5 — — 6 —

TMR-RF815R

4-2. SCHEMATIC DIAGRAM

220

330p 100k

— 7 — — 8 —

4-3. PRINTED WIRING BOARD

TMR-RF815R

• Semiconductor

Location

Ref. No. Location

D401 D-3
D402 D-3
D403 A-4
D404 D-2
D405 D-2
D407 B-3
D408 D-4
D410 B-4

IC401 B-2
IC402 B-4
IC403 D-4
IC404 B-3
IC405 D-2

Q401 D-1
Q402 B-4
Q404 B-4

1

— 9 — — 10 —

SECTION 5

EXPLODED VIEWS

TX-BASE

SECTION 6

ELECTRICAL PARTS LIST

NOTE:

• -XX, -X mean standardized parts, so they may
have some differences from the original one.

• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.

3

• The mechanical parts with no reference number
in the exploded views are not supplied.

• Accessories and packing materials are given in
the last of this parts list.

1

• Color Indication of Appearance Parts Example:
KNOB, BALANCE (WHITE) . . . (RED)

↑ ↑

Parts of Color Cabinet’s Color

2

8

NOTE:

• Due to standardization, replacements in the
parts list may be different from the parts
specified in the diagrams or the components
used on the set.

• -XX, -X mean standardized parts, so they
may have some difference from the original
one.

• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks

* A-4542-645-A TX-BASE BOARD, COMPLETE

***********************

* A-4542-646-A TX-VCO UNIT (VCO)

< ANTENNA >

ANT401 4-213-164-01 TERMINAL, ANTENNA

< CAPACITOR >

C403 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C406 1-163-037-11 CERAMIC CHIP 0.022uF 10% 25V
C407 1-126-961-11 ELECT 2.2uF 20.00% 50V
C413 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C416 1-163-037-11 CERAMIC CHIP 0.022uF 10% 25V

• CAPACITORS:
uF: µF

• RESISTORS
All resistors are in ohms.
METAL: metal-film resistor
METAL OXIDE: Metal Oxide-film resistor
F: nonflammable

• COILS
uH: µH

C475 1-124-635-00 ELECT 220uF 20.00% 6.3V
C476 1-126-382-11 ELECT 100uF 20.00% 16V
C478 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C480 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C481 1-163-251-11 CERAMIC CHIP 100PF 5.00% 50V

C483 1-163-224-11 CERAMIC CHIP 7PF 0.25PF 50V
C488 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V

D401 8-719-059-98 LED SLR-342VC3F (power)
D402 8-719-048-87 LED SLR-332MGF03 (chg)
D403 8-719-200-82 DIODE 11ES2
D404 8-719-991-33 DIODE 1SS133T-77
D405 8-719-991-33 DIODE 1SS133T-77

• SEMICONDUCTORS
In each case, u: µ, for example:
uA...: µA... , uPA... , µPA... ,
uPB... , µPB... , uPC... , µPC... ,
uPD..., µPD...

When indicating parts by reference number,
please include the board name.

< DIODE >

#2

4

5

#2

7

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks

1 3-046-687-11 CABINET (UPPER) (BLACK)
1 3-046-687-21 CABINET (UPPER) (WHITE)
2 3-049-800-01 CUSHION, ANTENNA
3 3-046-690-01 TUBE, LIGHT GUIDE

* 4 A-4542-645-A TX-BASE BOARD, COMPLETE

#2

5 X-3379-433-1 CABINET ASSY, LOWER (WHITE)
5 X-3379-660-1 CABINET ASSY, LOWER (BLACK)
7 4-984-729-01 FOOT, RUBBER
8 3-046-689-01 TERMINAL, CHARGE
#2 7-685-105-19 SCREW +P2X8 TYPE2 NON-SLIT

C417 1-126-961-11 ELECT 2.2uF 20.00% 50V
C421 1-124-234-00 ELECT 22uF 20% 16V
C422 1-126-934-11 ELECT 220uF 20.00% 16V
C423 1-163-251-11 CERAMIC CHIP 100PF 5.00% 50V
C425 1-163-037-11 CERAMIC CHIP 0.022uF 10% 25V

C426 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C427 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C428 1-163-251-11 CERAMIC CHIP 100PF 5.00% 50V
C429 1-163-251-11 CERAMIC CHIP 100PF 5.00% 50V
C430 1-124-259-11 ELECT 4.7uF 20.00% 16V

C431 1-126-157-11 ELECT 10uF 20% 16V
C432 1-163-018-00 CERAMIC CHIP 0.0056uF 5% 50V
C433 1-164-346-11 CERAMIC CHIP 1uF 16V
C435 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C436 1-126-157-11 ELECT 10uF 20% 16V

C438 1-163-251-11 CERAMIC CHIP 100PF 5.00% 50V
C441 1-126-157-11 ELECT 10uF 20% 16V
C442 1-163-018-00 CERAMIC CHIP 0.0056uF 5% 50V
C443 1-164-346-11 CERAMIC CHIP 1uF 16V
C444 1-163-251-11 CERAMIC CHIP 100PF 5.00% 50V

C445 1-163-251-11 CERAMIC CHIP 100PF 5.00% 50V
C451 1-124-635-00 ELECT 220uF 20.00% 6.3V
C452 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C453 1-126-157-11 ELECT 10uF 20% 16V
C454 1-163-251-11 CERAMIC CHIP 100PF 5.00% 50V

C455 1-163-227-11 CERAMIC CHIP 10PF 0.50PF 50V
C457 1-163-003-11 CERAMIC CHIP 330P 50V
C458 1-126-157-11 ELECT 10uF 20% 16V
C462 1-163-251-11 CERAMIC CHIP 100PF 5.00% 50V
C465 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V

D407 8-719-991-33 DIODE 1SS133T-77
D408 8-719-109-54 DIODE RD2.2ES-B2
D410 8-719-982-11 DIODE MTZJ-4.3B

< IC >

IC401 8-759-998-71 IC BA3308F
IC402 8-759-537-90 IC KIA78S05P-TP
IC403 8-759-667-59 IC NJM2035M(TE2)
IC404 8-759-679-76 IC KMP47C101M-1B54
IC405 8-759-510-73 IC BA10393F-E2

< JACK >

J401 1-566-822-21 JACK (B)
J402 1-580-441-61 JACK, PIN 2P (A)
J404 1-785-066-11 JACK,DC(POLARITY UNIFIED TYPE)(DC IN 9V)

< JUMPER >

JC418 1-216-295-91 SHORT 0
JC419 1-216-295-91 SHORT 0
JC421 1-216-295-91 SHORT 0
JC422 1-216-296-91 SHORT 0
JC423 1-216-296-91 SHORT 0

JC424 1-216-296-91 SHORT 0
JC426 1-216-296-91 SHORT 0
JC427 1-216-295-91 SHORT 0
JC430 1-216-295-91 SHORT 0
JC431 1-216-295-91 SHORT 0

JC470 1-216-295-91 SHORT 0

< COIL >

C466 1-163-021-91 CERAMIC CHIP 0.01uF 10.00% 50V
C468 1-163-038-00 CERAMIC CHIP 0.1uF 25V
C470 1-126-382-11 ELECT 100uF 20.00% 16V
C472 1-163-243-11 CERAMIC CHIP 47PF 5.00% 50V
C474 1-164-346-11 CERAMIC CHIP 1uF 16V

L401 1-414-234-11 INDUCTOR CHIP 0uH
L402 1-414-234-11 INDUCTOR CHIP 0uH
L404 1-414-234-11 INDUCTOR CHIP 0uH
L405 1-414-234-11 INDUCTOR CHIP 0uH
L408 1-419-079-21 COIL (MPX FILTER)

— 11 — — 12 —

TX-BASE

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks

L409 1-419-079-21 COIL (MPX FILTER)
L410 1-419-662-31 COIL, AIR-CORE
L413 1-414-234-11 INDUCTOR CHIP 0uH
L414 1-414-234-11 INDUCTOR CHIP 0uH
L415 1-414-234-11 INDUCTOR CHIP 0uH

< TRANSISTOR >

Q401 8-729-230-49 TRANSISTOR 2SC2712-YG
Q402 8-729-230-49 TRANSISTOR 2SC2712-YG
Q404 8-729-045-00 TRANSISTOR KTA1266GR-AT

< RESISTOR >

R401 1-216-085-00 METAL CHIP 33K 5% 1/10W
R403 1-216-018-00 METAL CHIP 51 5% 1/10W
R404 1-216-085-00 METAL CHIP 33K 5% 1/10W
R406 1-216-085-00 METAL CHIP 33K 5% 1/10W
R407 1-216-049-91 RES-CHIP 1K 5% 1/10W

R408 1-216-057-00 METAL CHIP 2.2K 5% 1/10W
R411 1-216-085-00 METAL CHIP 33K 5% 1/10W
R413 1-216-018-00 METAL CHIP 51 5% 1/10W
R414 1-216-085-00 METAL CHIP 33K 5% 1/10W
R416 1-216-085-00 METAL CHIP 33K 5% 1/10W

R417 1-216-049-91 RES-CHIP 1K 5% 1/10W
R418 1-216-057-00 METAL CHIP 2.2K 5% 1/10W
R421 1-216-097-91 RES-CHIP 100K 5% 1/10W
R422 1-216-061-00 METAL CHIP 3.3K 5% 1/10W
R423 1-216-033-00 METAL CHIP 220 5% 1/10W

R424 1-216-133-00 METAL CHIP 3.3M 5% 1/10W
R425 1-216-097-91 RES-CHIP 100K 5% 1/10W
R426 1-216-061-00 METAL CHIP 3.3K 5% 1/10W
R427 1-216-033-00 METAL CHIP 220 5% 1/10W
R428 1-216-045-00 METAL CHIP 680 5% 1/10W

R429 1-216-073-00 METAL CHIP 10K 5% 1/10W
R430 1-216-073-00 METAL CHIP 10K 5% 1/10W
R431 1-216-065-91 RES-CHIP 4.7K 5% 1/10W
R432 1-216-129-00 METAL CHIP 2.2M 5% 1/10W
R433 1-216-081-00 METAL CHIP 22K 5% 1/10W
R434 1-216-105-91 RES-CHIP 220K 5% 1/10W

R463 1-216-085-00 METAL CHIP 33K 5% 1/10W
R464 1-216-061-00 METAL CHIP 3.3K 5% 1/10W
R466 1-216-081-00 METAL CHIP 22K 5% 1/10W
R467 1-216-065-00 METAL CHIP 4.7K 5% 1/10W

R469 1-216-097-11 METAL CHIP 100K 0.5% 1/10W
R472 1-216-186-00 RES-CHIP 330 5% 1/8W
R473 1-216-049-91 RES-CHIP 1K 5% 1/10W
R474 1-216-044-00 METAL CHIP 620 5% 1/10W

R475 1-216-051-00 METAL CHIP 1.2K 5% 1/10W
R476 1-216-051-00 METAL CHIP 1.2K 5% 1/10W
R477 1-216-051-00 METAL CHIP 1.2K 5% 1/10W
R478 1-216-051-00 METAL CHIP 1.2K 5% 1/10W
R479 1-216-051-00 METAL CHIP 1.2K 5% 1/10W

R481 1-216-067-11 METAL CHIP 5.6K 5% 1/10W
R482 1-216-081-00 METAL CHIP 22K 5% 1/10W
R483 1-216-081-00 METAL CHIP 22K 5% 1/10W
R484 1-216-081-00 METAL CHIP 22K 5% 1/10W
R485 1-216-081-00 METAL CHIP 22K 5% 1/10W

R486 1-216-081-00 METAL CHIP 22K 5% 1/10W
R489 1-216-079-91 METAL CHIP 18K 5% 1/10W

< VARIABLE RESISTOR >

RV403 1-241-763-11 RES, ADJ, CARBON 4.7K

< SWITCH >

S401 1-771-961-11 SWITCH, SLIDE (NOISE FILTER)
S402 1-771-962-11 SWITCH, SLIDE (CHANNEL)

< VIBRATOR >

X401 1-781-850-11 VIBRATOR, CRYSTAL 38kHz

*************************************************************

R438 1-216-105-91 RES-CHIP 220K 5% 1/10W
R440 1-216-049-91 RES-CHIP 1K 5% 1/10W
R441 1-216-033-00 METAL CHIP 220 5% 1/10W
R442 1-216-045-00 METAL CHIP 680 5% 1/10W
R446 1-216-051-00 METAL CHIP 1.2K 5% 1/10W

R447 1-216-214-00 RES-CHIP 4.7K 5% 1/8W
R448 1-216-049-91 RES-CHIP 1K 5% 1/10W
R449 1-216-081-00 METAL CHIP 22K 5% 1/10W
R451 1-216-073-00 METAL CHIP 10K 5% 1/10W
R452 1-216-077-00 RES-CHIP 15K 5% 1/10W

R453 1-216-073-00 METAL CHIP 10K 5% 1/10W
R454 1-216-073-00 METAL CHIP 10K 5% 1/10W
R455 1-216-077-00 RES-CHIP 15K 5% 1/10W
R456 1-216-051-00 METAL CHIP 1.2K 5% 1/10W
R457 1-216-214-00 RES-CHIP 4.7K 5% 1/8W

R458 1-216-049-91 RES-CHIP 1K 5% 1/10W
R459 1-216-081-00 METAL CHIP 22K 5% 1/10W
R460 1-216-086-00 RES-CHIP 36K 5% 1/10W
R461 1-216-091-00 METAL CHIP 56K 5% 1/10W
R462 1-216-121-91 RES-CHIP 1M 5% 1/10W

— 13 —

TMR-RF815R

9-927-955-11

Sony Corporation

Audio Entertainment Group

— 14 —

Printed in Japan © 2000.6

2000F1646-1

Published by PE General Engineering Dept.