Sony MDRIF-330-R Service manual

MDR-IF230/IF330R

SERVICE MANUAL

Ver 1.1 2000. 06

Illustration : MDR-IF330R

MDR-IF230 is the component model block one in the MDR-IF130K
or MDR-IF230RK.
MDR-IF330R is the component model block one in the MDR-IF330RK.

COMPONENT MODEL NAME FOR MDR-IF130K/IF230RK/IF330RK

MDR-IF130K MDR-IF230RK MDR-IF330RK
Cordless Headphones MDR-IF230 MDR-IF230 MDR-IF330R
Transmitter TMR-IF130 TMR-IF230R TMR-IF330R

US Model

Canadian Model

E Model

Australian Model

MDR-IF230/IF330R

Tourist Model

MDR-IF330R

SPECIFICATIONS

Headphone

Charging and using hours (MDR-IF330R)
Approx. charging hours Approx. using hours*
1 1.5
24** 30

* at 1kHz 1mW + 1mW output
** the hours required to fully charge an cmpty battery
Battery life* (MDR-IF230/IF330R)

Battery Approx. hours
Sony alkaline battery LR6(SG) 100
Sony battery R6P(SR) 50

* at 1kHz 1mW + 1mW output
Power source Supplied Ni-Cd rechargeable battery NC-AA(HJ)

Mass Approx. 180g (6.4oz.) including battery
Supplied Ni-Cd rechargeable battery
Model name NC-AA (HJ)
Type Ni-Cd
Voltage 1.2V
Capacity 600mAh

Design and specifications are subject to change without notice.

or commercially available R6 (size AA) dry battery

CORDLESS STEREO HEADPHONES

MICROFILM

SECTION 1

)

DISASSEMBLY

r

The equipment can be remo ved using the f ollowing pr ocedure .

Set

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

1-1. RX BOARD REMOVAL

Cover (R), hanger RX board
Cover (L), hanger

PD board

Cover (R), hanger

1-2. PD BOARD REMOVAL

Pat, ear

6

RX board

Hanger (R)

2

Screw

(M 1.7x4)

7

4

Screw +P (2x6)

5

Screw +P (2x6)

3

5

Screw +P (2x6)

4

Screws +P (2x6)

4

Screws +P (2x6)

2

Screw (M 1.7x4

SP2

1

Lid, battery case

Pat, ear

1

SP1

4

Screw +P (2x6)

3

– 2 –

PD board

8

7

Cover (L), hanger

Hanger (L)

6

SECTION 2

)

ELECTRICAL ADJUSTMENT

TMR-IF330R

Note :

1. The transmitter section adjustments should be completed before
performing the headphones section adjustment.

2. On adjusting the headphones section, use the transmitter as a
jig.

Headphones Transmitter

MDR-IF230 or

TMR-IF130

TMR-IF230R

MDR-IF330R TMR-IF330R

3. The headphones section adjustment must be made with PD board
connected to the RX board with the specified wire.

4. The MUTE ON POINT adjustment must be made while taking
care of the photodiodes (D1, D2, D101, D102) not to be ex­posed directly to external lights (such as incandescent lamp and
sun light).

Connection and Adjustment Location :

[RX BOARD] (Conductor side)

distortion

meter

TUNING Adjustment

Preparation :

AF OSC

AUDIO IN B jack (J1)
1kHz 245mV (–10dB)

ATT

600

Ω

Jig

Transmitter

J4

power supply

(DC 9V)

1. Feed a signal to jig (transmitter) and connect a power supply to
DC IN 9V jack (J4).

2. Appl y DC 1.2V between TP (VCC) and TP (GND) on the RX
board.

3. Set the R V1 (V OL) on the RX boar d to the minim um position.

Procedure :

1. Connect the distor tion meter to TP31 (L-c h) and TP51 (R-c h).

2. T urn on the po wer.

3. Adjust with L32 (L-ch) and L53 (R-ch) to minimize the reading
on the distor tion meter .

regulated DC
power suppluy

MUTE ON POINT Adjustment

Connection and Adjustments Location :

[RX BOARD] (Conductor side)

RV2 : Mute ON point
Adjustment

TP3

TP2

TP3

RV2

TP2

TP51

(R-CH)

TP31

TP51

(R-CH)

C35

TP51

level meter

C55

TP (VCC)

TP

(GND)

TP

(VCC)

TP (GND)

TP

(SW)

regulated DC
power suppluy

(output :1.2V DC)

RV1 (VOL)

TP3

TP2

TP31

(L-CH)

TP31

L53

TP51
(R-CH)

TP51

C35

C55

L32

L 1

TP

(VCC)

TP (VCC)

TP (GND)

TP

(GND)

TP

(SW)

C 3

(output :1.2V DC)

L32 : Tuning Adjustment (L-CH

L53 : Tuning Adjustment (R-CH)

FM RF signal
generator

0.1µF

10k

Ω

TP (SIG)

Carrier frequency : 2.8MHz
Modulation : 1kHz
Deviation : 16kHz
Output level : 34dB

µ

V

Procedure :

1. Shor t the cir cuit between TP2 and TP3.

2. Note down the level meter read at this time.

3. Release the shor t-cir cuit between TP2 and TP3.

4. Adjust R V2 so that the le vel meter read is 5dB to 10dB belo w
the value noted down at step 2.

L 1

TP

(SIG)

C 3

– 3 – – 4 –

3-2. SCHEMATIC DIAGRAM

MDR-IF230/IF330R

Note:

• 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.

¢

•

• U : B+ Line.

• H : adjustment for repair.

• Power voltage is dc 1.2V and f ed with regulated dc power

• Signal path.

: internal component.

supply from battery terminal.
Voltages are dc with respect to ground under no-signal
conditions.

F : AUDIO
J : RF

4

W or less unless otherwise

– 7 – – 8 –

Ver 1.1 2000. 06

SECTION 4

EXPLODED VIEW

PD RX

SECTION 5

ELECTRICAL PARTS LIST

NOTE :

• -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.

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

8

IF330R

2

9

3

5

4

4

4

7

15

25

4

12

4

1

19

16

4

SP1

24

6

4

14

23

IF330R

13

20

18

4

4

11

10

22

4

17

25

10

4

21

6

4

SP2

7

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

1 4-995-951-01 LID, BATTERY CASE
2 4-995-937-01 TERMINAL (+), CHARGE (IF330R)
3 4-995-938-01 TERMINAL (-), CHARGE (IF330R)
4 7-685-104-19 SCREW +P 2X6 TYPE2 NON-SLIT
5 4-997-125-01 BAND, HEAD (IF230)

5 4-995-939-01 BAND, HEAD (IF330R)
6 4-992-281-01 HOLDER, BALL SHAFT
7 4-995-950-01 PAT, EAR
8 4-995-936-01 COVER, TERMINAL (IF330R)
9 4-995-940-01 SUSPENDER

10 4-995-941-01 SPRING, SUSPENDER
11 4-995-942-01 HANGER (R)
12 4-995-943-01 HANGER (L)
13 4-995-944-01 COVER (R), HANGER (IF230)
13 4-995-944-11 COVER (R), HANGER (IF330R)

14 4-995-945-01 COVER (L), HANGER (IF230)
14 4-995-945-11 COVER (L), HANGER (IF330R)
15 4-995-946-01 WINDOW (R), RAY CATCHER
16 4-995-947-01 WINDOW (L), RAY CATCHER
17 4-995-948-01 PLATE (R), FRONT

18 4-995-949-01 PLATE (L), FRONT
19 4-999-588-01 TERMINAL BOARD (+), BATTERY

* 20 A-4542-500-A RX BOARD, COMPLETE
* 21 1-669-731-11 PD BOARD

22 4-995-952-01 TERMINAL (+), BATTERY

23 4-995-954-01 TERMINAL (CHARGE), BATTERY (IF330R)
24 4-995-955-01 TERMINAL (–), BATTERY
25 3-713-791-01 SCREW M 1.7X4
SP1 1-505-117-21 SPEAKER (L-CH)
SP2 1-505-117-21 SPEAKER (R-CH)

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.

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

• 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 Remark Ref. No. Part No. Description Remark

* 1-669-731-11 PD BOARD

*********

4-995-952-01 TERMINAL (+), BATTERY
4-995-954-01 TERMINAL (CHARGE), BATTERY
4-995-955-01 TERMINAL (–), BATTERY

< DIODE >

D101 8-719-058-49 LED PP508 (INFRARED SENSOR)
D102 8-719-058-49 LED PP508 (INFRARED SENSOR)

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

* A-4542-500-A RX BOARD, COMPLETE

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

< CAPACITOR >

C1 1-126-607-11 ELECT CHIP 47uF 20% 4V
C3 1-163-031-11 CERAMIC CHIP 0.01uF 50V
C4 1-163-031-11 CERAMIC CHIP 0.01uF 50V
C5 1-165-319-11 CERAMIC CHIP 0.1uF 50V
C6 1-126-246-11 ELECT CHIP 220uF 20% 4V

C7 1-163-135-00 CERAMIC CHIP 560PF 5% 50V
C8 1-164-346-11 CERAMIC CHIP 1uF 16V
C9 1-163-121-00 CERAMIC CHIP 150PF 5% 50V
C10 1-163-121-00 CERAMIC CHIP 150PF 5% 50V
C12 1-163-263-11 CERAMIC CHIP 330PF 5% 50V

C13 1-126-607-11 ELECT CHIP 47uF 20% 4V
C14 1-126-246-11 ELECT CHIP 220uF 20% 4V
C15 1-164-346-11 CERAMIC CHIP 1uF 16V
C17 1-163-227-11 CERAMIC CHIP 10PF 50V
C31 1-163-116-00 CERAMIC CHIP 91PF 5% 50V

C32 1-165-319-11 CERAMIC CHIP 0.1uF 50V
C33 1-163-245-11 CERAMIC CHIP 56PF 5% 50V
C34 1-164-344-11 CERAMIC CHIP 0.068uF 10% 25V
C35 1-164-222-11 CERAMIC CHIP 0.22uF 25V
C36 1-164-346-11 CERAMIC CHIP 1uF 16V

C37 1-165-319-11 CERAMIC CHIP 0.1uF 50V
C51 1-163-257-11 CERAMIC CHIP 180PF 5% 50V
C52 1-165-319-11 CERAMIC CHIP 0.1uF 50V
C53 1-165-319-11 CERAMIC CHIP 0.1uF 50V
C54 1-164-344-11 CERAMIC CHIP 0.068uF 10% 25V

C55 1-164-222-11 CERAMIC CHIP 0.22uF 25V
C56 1-164-346-11 CERAMIC CHIP 1uF 16V
C57 1-165-319-11 CERAMIC CHIP 0.1uF 50V

• SEMICONDUCTORS

In each case, u : µ , for example :

uA.... : µ A.... , uPA.... : µ PA....

uPB.... : µ PB.... , uPC.... : µ PC....

uPD.... : µ PD....

• CAPACITORS

uF : µ F

• COILS

uH : µ H

C91 1-164-346-11 CERAMIC CHIP 1uF 16V
C92 1-164-004-11 CERAMIC CHIP 0.1uF 10% 25V

C93 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C94 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50V
C96 1-163-017-00 CERAMIC CHIP 0.0047uF 5% 50V

D1 8-719-058-49 LED PP508 (INFRARED SENSOR)
D2 8-719-058-49 LED PP508 (INFRARED SENSOR)
D91 8-719-066-57 LED SA2512 (POWER)

FL31 1-239-762-11 FILTER, BAND PASS
FL51 1-239-763-11 FILTER, BAND PASS

IC1 8-759-364-96 IC TA2056FN-EL
IC2 8-759-289-74 IC NJM2076M(TE2)

JC1 1-216-295-00 METAL CHIP 0 5% 1/10W

L1 1-410-386-11 INDUCTOR CHIP 27uH
L31 1-410-387-11 INDUCTOR CHIP 33uH
L32 1-411-530-21 COIL (DET)
L51 1-410-387-11 INDUCTOR CHIP 33uH
L52 1-410-388-31 INDUCTOR CHIP 39uH

L53 1-411-531-21 COIL (DET)

Q1 8-729-220-93 TRANSISTOR 2SK209-G
Q2 8-729-230-49 TRANSISTOR 2SC2712-YG
Q3 8-729-230-49 TRANSISTOR 2SC2712-YG
Q4 8-729-030-31 TRANSISTOR 2SA1182-0(TE85L)
Q5 8-729-030-31 TRANSISTOR 2SA1182-0(TE85L)

Q91 8-729-929-41 TRANSISTOR UMA4
Q92 8-729-927-68 TRANSISTOR UMW1

R1 1-216-053-00 METAL CHIP 1.5K 5% 1/10W

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

< DIODE >

< FILTER >

< IC >

< JUMPER RESISTOR >

< COIL >

< TRANSISTOR >

< RESISTOR >

– 9 – – 10 –

Ref. No. Part No. Description Remark

R2 1-216-089-11 RES,CHIP 47K 5% 1/10W
R3 1-216-049-11 RES,CHIP 1K 5% 1/10W
R4 1-216-053-00 METAL CHIP 1.5K 5% 1/10W
R5 1-216-081-00 METAL CHIP 22K 5% 1/10W

R6 1-216-043-11 RES,CHIP 560 5% 1/10W
R7 1-216-062-00 METAL CHIP 3.6K 5% 1/10W
R8 1-216-085-00 METAL CHIP 33K 5% 1/10W
R9 1-216-085-00 METAL CHIP 33K 5% 1/10W
R10 1-216-073-00 METAL CHIP 10K 5% 1/10W

R31 1-216-061-00 METAL CHIP 3.3K 5% 1/10W
R32 1-216-059-00 METAL CHIP 2.7K 5% 1/10W
R33 1-216-025-11 RES,CHIP 100 5% 1/10W
R34 1-216-298-00 METAL CHIP 2.2 5% 1/10W
R51 1-216-061-00 METAL CHIP 3.3K 5% 1/10W

R52 1-216-059-00 METAL CHIP 2.7K 5% 1/10W
R53 1-216-025-11 RES,CHIP 100 5% 1/10W
R54 1-216-298-00 METAL CHIP 2.2 5% 1/10W
R91 1-216-025-11 RES,CHIP 100 5% 1/10W
R92 1-216-089-11 RES,CHIP 47K 5% 1/10W

R93 1-216-089-11 RES,CHIP 47K 5% 1/10W
R94 1-216-073-00 METAL CHIP 10K 5% 1/10W
R95 1-216-025-11 RES,CHIP 100 5% 1/10W

RX

< VARIABLE RESISTOR >

RV1 1-223-517-11 RES, VAR, CARBON 50K/50K (Á VOL)
RV2 1-223-274-11 RES, ADJ, CERMET 2.2K (MUTE ON POINT)

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

MISCELLANEOUS

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

SP1 1-505-117-21 SPEAKER (L-CH)
SP2 1-505-117-21 SPEAKER (R-CH)

– 11 –

MDR-IF230/IF330R

9-924-901-11

Sony Corporation

Personal A&V Products Company

– 12 –

Printed in Singapore © 1998.5

98E027041-1

Published by Quality Engineering Dept.

(Shibaura)