Ver 1.1 2000. 06

HeadphoneCharging 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 batteryBattery life* (MDR-IF230/IF330R)

Battery Approx. hours

Sony alkaline battery LR6(SG) 100

Sony battery R6P(SR) 50* at 1kHz 1mW + 1mW outputPower source Supplied Ni-Cd rechargeable battery NC-AA(HJ)

or commercially available R6 (size AA) dry batteryMass Approx. 180g (6.4oz.) including batterySupplied Ni-Cd rechargeable batteryModel name NC-AA (HJ)Type Ni-CdVoltage 1.2VCapacity 600mAh

Design and specifications are subject to change without notice.

MICROFILM

MDR-IF230/IF330RSERVICE MANUAL

CORDLESS STEREO HEADPHONES

US ModelCanadian Model

E ModelAustralian Model

MDR-IF230/IF330R

Tourist ModelMDR-IF330R

MDR-IF130K MDR-IF230RK MDR-IF330RK

Cordless Headphones MDR-IF230 MDR-IF230 MDR-IF330R

Transmitter TMR-IF130 TMR-IF230R TMR-IF330R

COMPONENT MODEL NAME FOR MDR-IF130K/IF230RK/IF330RK

SPECIFICATIONS

MDR-IF230 is the component model block one in the MDR-IF130Kor MDR-IF230RK.MDR-IF330R is the component model block one in the MDR-IF330RK.

Illustration : MDR-IF330R

– 2 –

SECTION 1DISASSEMBLY

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

1-1. RX BOARD REMOVAL

1-2. PD BOARD REMOVAL

5 Screw +P (2x6)

4 Screws +P (2x6)

2 Screw (M 1.7x4)

4 Screw +P (2x6)

Cover (R), hanger

RX board

Hanger (R) SP2Pat, ear

7

6

3

1

4 Screw +P (2x6)

4 Screws +P (2x6)2 Screw (M 1.7x4)

5 Screw +P (2x6)

Cover (L), hanger

PD board

Hanger (L)

Lid, battery case

SP1

Pat, ear

7

3

8

6

1

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

Set Cover (R), hanger RX board

Cover (L), hanger PD board

– 3 – – 4 –

TMR-IF330R

TUNING AdjustmentPreparation :

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

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

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

SECTION 2ELECTRICAL ADJUSTMENT

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

TMR-IF130MDR-IF230 or

TMR-IF230RMDR-IF330R TMR-IF330R

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

4. The MUTE ON POINT adjustment must be made while takingcare of the photodiodes (D1, D2, D101, D102) not to be ex-posed directly to external lights (such as incandescent lamp andsun light).

Transmitter

J4power supply

(DC 9V)

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

AF OSC

ATT Jig

600 Ω

C35

C55

C 3L

1

TP51

TP31

L53

L32

TP3TP2

TP(VCC)

TP(GND)

TP(SW)

regulated DCpower suppluy distortion

meter

TP51(R-CH)

TP31(L-CH)

RV1 (VOL)

TP (VCC)

TP (GND)

L32 : Tuning Adjustment (L-CH)

L53 : Tuning Adjustment (R-CH)

[RX BOARD] (Conductor side)

(output :1.2V DC)

Procedure :1. Connect the distor tion meter to TP31 (L-c h) and TP51 (R-c h).2. Turn on the po wer.3. Adjust with L32 (L-ch) and L53 (R-ch) to minimize the reading

on the distor tion meter .

Connection and Adjustment Location :

MUTE ON POINT Adjustment

Connection and Adjustments Location :

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.

C35

C55

C 3L

1

TP51

TP31

TP3

TP2

TP(VCC)

TP(SIG)

TP(GND)

TP(SW)

RV2

regulated DC power suppluy

level meter

TP51(R-CH)

TP51(R-CH)

TP3

RV2 : Mute ON point Adjustment

TP2

TP (SIG)10kΩ 0.1µF

TP (VCC)

TP (GND)

[RX BOARD] (Conductor side)

FM RF signalgenerator

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

(output :1.2V DC)

– 7 – – 8 –

MDR-IF230/IF330R

Note:• All capacitors are in µF unless otherwise noted. pF: µµF

50 WV or less are not indicated except for electrolyticsand tantalums.

• All resistors are in Ω and 1/4 W or less unless otherwise

specified.• ¢ : internal component.• U : B+ Line.• H : adjustment for repair.• Power voltage is dc 1.2V and fed with regulated dc power

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

• Signal path.F : AUDIOJ : RF

3-2. SCHEMATIC DIAGRAM

– 9 – – 10 –

SECTION 4EXPLODED VIEW

NOTE :• -XX, -X mean standardized parts, so they

may have some difference from the originalone.

• Items marked “ * ”are not stocked since theyare seldom required for routine service. Somedelay should be anticipated when orderingthese items.

1 4-995-951-01 LID, BATTERY CASE2 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-SLIT5 4-997-125-01 BAND, HEAD (IF230)

5 4-995-939-01 BAND, HEAD (IF330R)6 4-992-281-01 HOLDER, BALL SHAFT7 4-995-950-01 PAT, EAR8 4-995-936-01 COVER, TERMINAL (IF330R)9 4-995-940-01 SUSPENDER

10 4-995-941-01 SPRING, SUSPENDER11 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 CATCHER16 4-995-947-01 WINDOW (L), RAY CATCHER17 4-995-948-01 PLATE (R), FRONT

18 4-995-949-01 PLATE (L), FRONT19 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 (–), BATTERY25 3-713-791-01 SCREW M 1.7X4SP1 1-505-117-21 SPEAKER (L-CH)SP2 1-505-117-21 SPEAKER (R-CH)

IF330R

SP1

SP2

1

23

254

44

4

4

4

4

5

6

6

7

7

8

9

10

10

11

12

13

14

15 16

17

18

19

20

21

22

23

24

IF330R

25

4

4

4

4

4

• The mechanical parts with no referencenumber in the exploded views are notsupplied.

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

NOTE :• Due to standardization, replacements in the

parts list may be different from the partsspecified in the diagrams or the componentsused on the set.

• -XX, -X mean standardized parts, so theymay have some difference from the originalone.

• RESISTORSAll resistors are in ohmsMETAL : Metal-film resistorMETAL OXIDE :Metal oxide-film resistorF : nonflammable

• Items marked “ * ”are not stocked sincethey are seldom required for routine service.Some delay should be anticipated whenordering these items.

• SEMICONDUCTORSIn each case, u : µ , for example :uA.... : µ A.... , uPA.... : µ PA....uPB.... : µ PB.... , uPC.... : µ PC....uPD.... : µ PD....

• CAPACITORSuF : µ F

• COILSuH : µ H

When indicating parts by reference num-ber, please include the board.

SECTION 5ELECTRICAL PARTS LIST

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

* 1-669-731-11 PD BOARD*********

4-995-952-01 TERMINAL (+), BATTERY4-995-954-01 TERMINAL (CHARGE), BATTERY4-995-955-01 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% 4VC3 1-163-031-11 CERAMIC CHIP 0.01uF 50VC4 1-163-031-11 CERAMIC CHIP 0.01uF 50VC5 1-165-319-11 CERAMIC CHIP 0.1uF 50VC6 1-126-246-11 ELECT CHIP 220uF 20% 4V

C7 1-163-135-00 CERAMIC CHIP 560PF 5% 50VC8 1-164-346-11 CERAMIC CHIP 1uF 16VC9 1-163-121-00 CERAMIC CHIP 150PF 5% 50VC10 1-163-121-00 CERAMIC CHIP 150PF 5% 50VC12 1-163-263-11 CERAMIC CHIP 330PF 5% 50V

C13 1-126-607-11 ELECT CHIP 47uF 20% 4VC14 1-126-246-11 ELECT CHIP 220uF 20% 4VC15 1-164-346-11 CERAMIC CHIP 1uF 16VC17 1-163-227-11 CERAMIC CHIP 10PF 50VC31 1-163-116-00 CERAMIC CHIP 91PF 5% 50V

C32 1-165-319-11 CERAMIC CHIP 0.1uF 50VC33 1-163-245-11 CERAMIC CHIP 56PF 5% 50VC34 1-164-344-11 CERAMIC CHIP 0.068uF 10% 25VC35 1-164-222-11 CERAMIC CHIP 0.22uF 25VC36 1-164-346-11 CERAMIC CHIP 1uF 16V

C37 1-165-319-11 CERAMIC CHIP 0.1uF 50VC51 1-163-257-11 CERAMIC CHIP 180PF 5% 50VC52 1-165-319-11 CERAMIC CHIP 0.1uF 50VC53 1-165-319-11 CERAMIC CHIP 0.1uF 50VC54 1-164-344-11 CERAMIC CHIP 0.068uF 10% 25V

C55 1-164-222-11 CERAMIC CHIP 0.22uF 25VC56 1-164-346-11 CERAMIC CHIP 1uF 16VC57 1-165-319-11 CERAMIC CHIP 0.1uF 50V

C91 1-164-346-11 CERAMIC CHIP 1uF 16VC92 1-164-004-11 CERAMIC CHIP 0.1uF 10% 25V

C93 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50VC94 1-163-009-11 CERAMIC CHIP 0.001uF 10% 50VC96 1-163-017-00 CERAMIC CHIP 0.0047uF 5% 50V

< DIODE >

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)

< FILTER >

FL31 1-239-762-11 FILTER, BAND PASSFL51 1-239-763-11 FILTER, BAND PASS

< IC >

IC1 8-759-364-96 IC TA2056FN-ELIC2 8-759-289-74 IC NJM2076M(TE2)

< JUMPER RESISTOR >

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

< COIL >

L1 1-410-386-11 INDUCTOR CHIP 27uHL31 1-410-387-11 INDUCTOR CHIP 33uHL32 1-411-530-21 COIL (DET)L51 1-410-387-11 INDUCTOR CHIP 33uHL52 1-410-388-31 INDUCTOR CHIP 39uH

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

< TRANSISTOR >

Q1 8-729-220-93 TRANSISTOR 2SK209-GQ2 8-729-230-49 TRANSISTOR 2SC2712-YGQ3 8-729-230-49 TRANSISTOR 2SC2712-YGQ4 8-729-030-31 TRANSISTOR 2SA1182-0(TE85L)Q5 8-729-030-31 TRANSISTOR 2SA1182-0(TE85L)

Q91 8-729-929-41 TRANSISTOR UMA4Q92 8-729-927-68 TRANSISTOR UMW1

< RESISTOR >

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

PD RX

Ver 1.1 2000. 06

– 11 –

Ref. No. Part No. Description Remark

RX

R2 1-216-089-11 RES,CHIP 47K 5% 1/10WR3 1-216-049-11 RES,CHIP 1K 5% 1/10WR4 1-216-053-00 METAL CHIP 1.5K 5% 1/10WR5 1-216-081-00 METAL CHIP 22K 5% 1/10W

R6 1-216-043-11 RES,CHIP 560 5% 1/10WR7 1-216-062-00 METAL CHIP 3.6K 5% 1/10WR8 1-216-085-00 METAL CHIP 33K 5% 1/10WR9 1-216-085-00 METAL CHIP 33K 5% 1/10WR10 1-216-073-00 METAL CHIP 10K 5% 1/10W

R31 1-216-061-00 METAL CHIP 3.3K 5% 1/10WR32 1-216-059-00 METAL CHIP 2.7K 5% 1/10WR33 1-216-025-11 RES,CHIP 100 5% 1/10WR34 1-216-298-00 METAL CHIP 2.2 5% 1/10WR51 1-216-061-00 METAL CHIP 3.3K 5% 1/10W

R52 1-216-059-00 METAL CHIP 2.7K 5% 1/10WR53 1-216-025-11 RES,CHIP 100 5% 1/10WR54 1-216-298-00 METAL CHIP 2.2 5% 1/10WR91 1-216-025-11 RES,CHIP 100 5% 1/10WR92 1-216-089-11 RES,CHIP 47K 5% 1/10W

R93 1-216-089-11 RES,CHIP 47K 5% 1/10WR94 1-216-073-00 METAL CHIP 10K 5% 1/10WR95 1-216-025-11 RES,CHIP 100 5% 1/10W

< 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)

– 12 –

MDR-IF230/IF330R

9-924-901-11Sony Corporation

Personal A&V Products Company

98E027041-1Printed in Singapore © 1998.5

Published by Quality Engineering Dept. (Shibaura)