Sony TMRIF-540-R Service manual

TMR-IF540R

SERVICE MANUAL

Ver 1.0 2003. 03

• The TMR-IF540R is the transmitter
that comprises the MDR-IF540RK.

SRS is a trademark of SRS Labs Inc.
SRS Headphones are manufactured under
license from SRS Labs. Inc.

• MDR-IF540RK consists of the following models respectively.

Headphones MDR-IF540R
Transmitter TMR-IF540R

Canadian Model

Tourist Model

SPECIFICATIONS

Transmitter

Power source DC IN 9 V jack accepts

Where purchased Operating voltage

US, Canadian 120 V AC, 60 Hz
Japan (exept for 110 V/120 V/220 V/

Japanese 240 V AC, 50/60 Hz
domestic model)

Other countries 220 – 230 V AC, 50/

Audio input Phono jacks/stereo mini jack
Dimensions Approx. 133 × 124 × 136 mm

Mass Approx. 160 g (6 oz.)

Design and specifications are subject to change without
notice.

power supplied from the AC
power adaptor for use on the
following voltages:

60 Hz or 120 V AC,
60 Hz

(5

1/4 × 5 × 5 3/8 in.) (w/h/d)

US Model

E Model

9-877-227-01

2003C0400-1
© 2003. 03

Notes on Chip Component Replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be

damaged by heat.

TRANSMITTER

Sony Corporation

Personal Audio Company
Published by Sony Engineering Corporation

1

TMR-IF540R

TABLE OF CONTENTS

1. GENERAL

Setting up the transmitter ........................................................ 3

2. DISASSEMBL Y

2-1. Cabinet (Upper) Assy..........................................................5

2-2. TX Board.............................................................................6

3. ELECTRICAL ADJUSTMENTS

Oscillation Frequency Adjustment .......................................... 7

4. DIAGRAMS

4-1. Block Diagram – Transmitter Section –.............................. 9

4-2. Printed Wiring Board – Transmitter Section –.................. 10

4-3. Schematic Diagram – Transmitter Section –.....................11

4-4. IC Block Diagram ............................................................. 12

5. EXPLODED VIEW

5-1. Transmitter Section ........................................................... 13

6. ELECTRICAL PARTS LIST ........................................ 14

2

SECTION 1

GENERAL

TMR-IF540R

This section is extracted
from instruction manual.

3

TMR-IF540R

4

SECTION 2

y

DISASSEMBLY

Note : This set can be disassemble according to the following sequence.

SET

2-1. CABINET (UPPER) ASSY

(Page 5)

2-2. TX BOARD

(Page 6)

TMR-IF540R

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

2-1. CABINET (UPPER) ASSY

Note : Insert this in the LED hole

in the cabinet (upper) assy
when installing.

5

cabinet (upper) ass

1

P 2x6

2

protection sheet

3

P 2x6

4

P 2x6

5

TMR-IF540R

6

2-2. TX BOARD

3

TX board

2

1

P 2x

notch

6

SECTION 3

ELECTRICAL ADJUSTMENTS

PRECAUTION

1. These adjustments should be performed in the order in which

they appear. It is required as a rule to adjust the transmitter
section (TMR-IF540R) before adjusting the headphones
section (MDR-IF540R).

2. Adjustment and measurement should be made on each channel

unless otherwise specified.

3. Adjust on the left channel before adjusting on the right

channel.

4. Supply a power voltage of 9 V to the transmitter section (TMR-

IF540R) and a power voltage of 2.4 V to the headphones
section (MDR-IF540R).

Transmitter Section

Oscillation Frequency Adjustment

Connection:

digital frequency
counter

TX board

TP5 (L-ch)
TP55 (R-ch)

+

–



TMR-IF540R

Adjustment Method:

* Adjust with no signal:

1. Connect a digital frequency counter to TP5 (L-ch) or TP55 (R-

ch) on the TX board.

2. Adjust the RV1 (L-ch) or RV51 (R-ch) so that the frequency

counter reads the specified value.

Specified V alue:

L-ch RV1 2.3 MHz ± 2 kHz
R-ch RV51 2.8 MHz ± 2 kHz

Adjustment Location:

TX board (conductor side) TX board (component side)

TP55 (R-ch)

TP5 (L-ch)

RV1

RV51

(L-ch)

(R-ch)

OSCILLATION
FREQUENCY

ADJ

7

TMR-IF540R

THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)

for 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/
specified.

•%: indicates tolerance.

• C : panel designation.

• A : B+ Line.

• H : adjustment for repair.

• Power voltage is dc 9 V and fed with regulated dc power
supply from external power voltage jack.

•Voltage is dc with respect to ground under no-signal
(detuned) conditions.

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

• Signal path.

F : ANALOG
J : RF

4

W or less unless otherwise

SECTION 4

DIAGRAMS

for printed wiring boards:

• X : parts extracted from the component side.

• : Pattern from the side which enables seeing.

C
Q

B

E

These are omitted.

8

4-1. BLOCK DIAGRAM — TRANSMITTER SECTION —

IC1

J2

INPUT

A

J1

INPUT

B

CHARGE

TERMINAL

J3

DC IN 9V

-1

L

-2

R

SW1

-1 -2

ATT

ON

OFF

AMP

6 7 16 9

IC101

+5V
REG

2

Q201
CHARGE
SWITCH

13

1

VCC

8

VCC

!

VB

+5V

1

Q202

CHARGE

DET

IC2

MODULATOR

AGC

AGC

VREF

15 11

VREF

PRE-

EMPHASIS

PRE-

EMPHASIS

LEVEL

DETECT

ABC T/C

13 6

VREF

D102

D201

CHG

OUT1

9

OUT2

8

10

VDD

COM+

7

COM-

4

RV1

2.3MHz OSC

VCO

VCO

RV51

2.8MHz OSC

QR

QS

RQ

S

IC201

TIMER

L-CH

OUT

R-CH

OUT

22BIT

COUNTER

INITIALIZE

8

Q102

LEVEL

DETECT

OSC3

OSC2

OSC1

3

2

1

6

+5V

Q103

SWITCH

Q1,2
AMP

Q51,52

AMP

Q3

Q53

Q3,53

LED DRIVER

VB

D103

D104

D105

D106

TRANSMITTER

• Signal path

: ANALOG

: RF

D103-106

IR

TMR-IF540R

99

TMR-IF540R

4-2. PRINTED WIRING BOARD — TRANSMITTER SECTION — • Refer to page 8 for Common Note on Printed Wiring Boards.

• Semiconductor
Location

Ref. No. Location
D101 H-8

D102 G-5
D103 B-6
D104 C-5
D105 D-4
D106 E-3
D201 F-2

IC1 C-7
IC2 E-6
IC101 H-6
IC201 H-5

Q1 F-4
Q2 G-4
Q3 H-2
Q51 F-3
Q52 G-3
Q53 F-2
Q102 F-5
Q103 G-5
Q201 G-4
Q202 G-5

A

B

C

D

E

F

G

H

1

D201

234567891011

TP

109

C125

TP

203

Q53

R63

R13

Q3

TP55

R58

Q51

R62

C57

Q52

C201

D106

TP

202

R59

R61

R60
C124

JW20

IR TRANSMITTER

R9

JW18

Q1

C7

R11

Q2

JW7

R12

Q201

D103-106

D105

TP3

R8

R10

C207

R207

C208

R208

C204

R113

D102

TP106

Q102

R201

R112

IC201

JW5

C118

C120

JW9

Q103

C117

C122

Q202

R209

C205

JW17

RV51

R210
R211
C206

TP

201

D104

R105

TP

205

TP

204

TP53

R205

R206

C55

IC2

JW16

R202

R203

R204

C104

JW13

RV1

TP

108

C105

D103

JW14

C113

JW11

103

IC101

C115

TP

C5

R4

C3

R115

C103

TP

104

R6

C114

C112

JW19

C110

R104

JW12

JW4

C102

TP

105

C1

JW3

IC1

JW15

C111

R114

JW2

JW1

R56

D101

C53

TP52

C109

R54

R51

TP

101

C51

R64

R52

C101

R53

TP2

TP51

R14

R2

TP1

R3

SW1

R1

J2

J1

J3

TP102

I

J

1010

4-3. SCHEMATIC DIAGRAM — TRANSMITTER SECTION — • Refer to page 8 for Common Note on Schematic Diagram and page 12 for IC Block Diagram.

TMR-IF540R

R4

R54

IC101

C3

R6

JW15

R56

C53

C110

C109

C105

R114

C111

TP103

TP104

JW3

JW12

JW2

Q202

TP105

JW4

R115

C112

JW19 JW13

C113

IC2

C55

JW14

R105

C117

C115

C118

C114

TP106

JW11

C120

R104

RV1

TP53

RV51

JW16

JW17

JW9

D102

TP3

R113

C122

JW18

Q102

R112

TP108

Q103

JW7

R8

R59

R58

R10

C7

Q1

R11

R9

R61

Q51

C57

R60

C124

Q2

Q52

R12

C125

R62

C5

R3

C102

C1

IC1

C51

C103 C104

J1

J2

J3

TP1

TP51

TP2

TP52

TP101

TP102

R1

R51

R2

R52

R53

R64 R14

C101

D101

SW1

JW1

TP109

D103

D104

D105

D106

Q3 Q53

TP5

R13 R63

TP6 TP56

TP55

TP201

TP202

C201

R202 R203 R204 R205 R206

JW5

Q201

IC B/D

R207

C204

TP203

D201

C205

R201

JW20

TP204

R209

IC201

R208

C206

TP205

C207

C208

R210

R211

11 11

TMR-IF540R

4-4. IC BLOCK DIAGRAM

IC201 TB1004AF(EL)

OSC1

OSC2
OSC3
CMP-

GND

CK

R

Q

22BIT COUNTER

CK Q22

R

SQ

R

SQ

R

Q

CK

R

SQ

RQ

1

2
3
4

INITIALIZE

5

10 VDD

*

9

TIMER OUT1

*

8

TIMER OUT2

7

CMP+

6

RESET

1212

NOTE:

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

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

5-1. TRANSMITTER SECTION

SECTION 5

EXPLODED VIEW

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

• Color Indication of Appearance Parts
Example :

KNOB, BALANCE (WHITE) ... (RED)

R

Parts Color Cabinet’s Color

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

9

R

TMR-IF540R

10

8

A

4

A

6

7

5

2

1

3

4

4

3

4

11

Ref. No. Part No. Description Remark

13-246-376-01 CABINET (LOWER)
23-246-966-01 FOOT (BACK), RUBBER
34-984-729-01 FOOT, RUBBER
47-685-104-19 SCREW +P 2X6 TYPE2 NON-SLIT

* 5 A-3347-236-A TX BOARD, COMPLETE

63-246-378-01 TERMINAL (+), CHARGE (TMR)

Ref. No. Part No. Description Remark

7 3-246-379-01 TERMINAL (–), CHARGE (TMR)
8 3-246-372-01 BRACKET, JACK
9 3-246-377-01 WINDOW, LUMINOUS
10 3-246-375-01 CABINET (UPPER)
11 3-252-071-01 SHEET, PROTECTION

13

TMR-IF540R

SECTION 6

TX

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

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

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark

* A-3347-236-A TX BOARD, COMPLETE

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

3-246-378-01 TERMINAL (+), CHARGE (TMR)
3-246-379-01 TERMINAL (–), CHARGE (TMR)

ELECTRICAL PARTS LIST

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

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

• CAPACITORS
uF : µF

• COILS
uH : µH

D105 8-719-992-13 LED DAL5815
D106 8-719-992-13 LED DAL5815
D201 8-719-066-57 LED SA2512 (CHG)

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

< IC >

< CAPACITOR >

C1 1-126-964-11 ELECT 10uF 20% 50V
C3 1-162-927-11 CERAMIC CHIP 100PF 5% 50V
C5 1-126-964-11 ELECT 10uF 20% 50V
C7 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V
C51 1-126-964-11 ELECT 10uF 20% 50V

C53 1-162-927-11 CERAMIC CHIP 100PF 5% 50V
C55 1-126-964-11 ELECT 10uF 20% 50V
C57 1-162-966-11 CERAMIC CHIP 0.0022uF 10% 50V
C101 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C102 1-126-934-11 ELECT 220uF 20% 16V

C103 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C104 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C105 1-126-947-11 ELECT 47uF 20% 16V
C109 1-126-964-11 ELECT 10uF 20% 50V
C110 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V

C111 1-126-933-11 ELECT 100uF 20% 16V
C112 1-126-934-11 ELECT 220uF 20% 16V
C113 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C114 1-126-963-11 ELECT 4.7uF 20% 50V
C115 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V

C117 1-126-963-11 ELECT 4.7uF 20% 50V
C118 1-126-933-11 ELECT 100uF 20% 16V
C120 1-126-964-11 ELECT 10uF 20% 50V
C122 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C124 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V

C125 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C201 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C204 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C205 1-164-227-11 CERAMIC CHIP 0.022uF 10% 25V
C206 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V

C207 1-107-826-11 CERAMIC CHIP 0.1uF 10% 16V
C208 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V

< DIODE >

D101 8-719-210-33 DIODE EC10DS2
D102 8-719-988-61 DIODE 1SS355TE-17
D103 8-719-992-13 LED DAL5815
D104 8-719-992-13 LED DAL5815

IC1 8-759-909-71 IC BA4558F
IC2 8-759-497-48 IC TA2061AF-EL
IC101 8-759-537-90 IC KIA78S05P-TP
IC201 8-759-678-31 IC TB1004AF(EL)

< JACK >

J1 1-817-092-11 JACK, PIN 2P (INPUT B)
J2 1-793-549-11 JACK, STEREO MINIATURE (INPUT A)
J3 1-785-066-11 JACK, DC (POLARITY UNIFIED TYPE)

(DC IN 9V)

< TRANSISTOR >

Q1 8-729-901-81 TRANSISTOR 2SC2412K-T-146-R
Q2 8-729-026-49 TRANSISTOR 2SA1037AK-T146-R
Q3 8-729-920-85 TRANSISTOR 2SD1664-QR
Q51 8-729-901-81 TRANSISTOR 2SC2412K-T-146-R
Q52 8-729-026-49 TRANSISTOR 2SA1037AK-T146-R

Q53 8-729-920-85 TRANSISTOR 2SD1664-QR
Q102 8-729-027-46 TRANSISTOR DTC114YKA-T146
Q103 8-729-027-23 TRANSISTOR DTA114EKA-T146
Q201 6-550-364-01 TRANSISTOR 2SD2652T106
Q202 8-729-027-23 TRANSISTOR DTA114EKA-T146

< RESISTOR >

R1 1-216-838-11 METAL CHIP 27K 5% 1/10W
R2 1-216-838-11 METAL CHIP 27K 5% 1/10W
R3 1-216-833-11 METAL CHIP 10K 5% 1/10W
R4 1-216-838-11 METAL CHIP 27K 5% 1/10W
R6 1-216-841-11 METAL CHIP 47K 5% 1/10W

R8 1-216-823-11 METAL CHIP 1.5K 5% 1/10W
R9 1-216-817-11 METAL CHIP 470 5% 1/10W
R10 1-218-882-11 METAL CHIP 30K 0.5% 1/10W
R11 1-218-857-11 METAL CHIP 2.7K 0.5% 1/10W
R12 1-216-823-11 METAL CHIP 1.5K 5% 1/10W

R13 1-216-799-11 METAL CHIP 15 5% 1/10W
R14 1-216-843-11 METAL CHIP 68K 5% 1/10W
R51 1-216-838-11 METAL CHIP 27K 5% 1/10W
R52 1-216-838-11 METAL CHIP 27K 5% 1/10W
R53 1-216-833-11 METAL CHIP 10K 5% 1/10W

R54 1-216-838-11 METAL CHIP 27K 5% 1/10W

14

Ref. No. Part No. Description Remark

R56 1-216-841-11 METAL CHIP 47K 5% 1/10W
R58 1-216-823-11 METAL CHIP 1.5K 5% 1/10W
R59 1-216-817-11 METAL CHIP 470 5% 1/10W
R60 1-218-882-11 METAL CHIP 30K 0.5% 1/10W
R61 1-218-857-11 METAL CHIP 2.7K 0.5% 1/10W

R62 1-216-823-11 METAL CHIP 1.5K 5% 1/10W
R63 1-216-799-11 METAL CHIP 15 5% 1/10W
R64 1-216-843-11 METAL CHIP 68K 5% 1/10W
R104 1-216-863-11 METAL CHIP 3.3M 5% 1/10W
R105 1-216-817-11 METAL CHIP 470 5% 1/10W

R112 1-216-833-11 METAL CHIP 10K 5% 1/10W
R113 1-216-833-11 METAL CHIP 10K 5% 1/10W
R114 1-216-809-11 METAL CHIP 100 5% 1/10W
R115 1-216-805-11 METAL CHIP 47 5% 1/10W
R201 1-216-821-11 METAL CHIP 1K 5% 1/10W

R202 1-216-813-11 METAL CHIP 220 5% 1/10W
R203 1-216-813-11 METAL CHIP 220 5% 1/10W
R204 1-216-813-11 METAL CHIP 220 5% 1/10W
R205 1-216-812-11 METAL CHIP 180 5% 1/10W
R206 1-216-812-11 METAL CHIP 180 5% 1/10W

TMR-IF540R

TX

R207 1-216-857-11 METAL CHIP 1M 5% 1/10W
R208 1-216-825-11 METAL CHIP 2.2K 5% 1/10W
R209 1-216-857-11 METAL CHIP 1M 5% 1/10W
R210 1-216-845-11 METAL CHIP 100K 5% 1/10W
R211 1-216-833-11 METAL CHIP 10K 5% 1/10W

< VARIABLE RESISTOR >

RV1 1-241-767-21 RES, ADJ, CARBON 100K
RV51 1-241-767-21 RES, ADJ, CARBON 100K

< SWITCH >

SW1 1-571-478-11 SWITCH, SLIDE (ATT)

15

TMR-IF540R

REVISION HISTORY

Clicking the version allows you to jump to the revised page.
Also, clicking the version at the upper right on the revised page allows you to jump to the next revised
page.

Ver. Date Description of Revision

1.0 2003. 03 New

16