MDR-IF230/IF330R

SERVICE MANUAL

Ver 1.1 2000. 06

AEP Model UK Model
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 Cordless Headphones Transmitter MDR-IF230 TMR-IF130 MDR-IF230RK MDR-IF330RK MDR-IF230 TMR-IF230R MDR-IF330R TMR-IF330R

SPECIFICATIONS

Headphone Charging and using hours (MDR-IF330R) Approx. charging hours Approx. using hours* 1.24** 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) or commercially available R6 (size AA) dry battery 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.
CORDLESS STEREO HEADPHONES

MICROFILM

SECTION 1 DISASSEMBLY
rThe equipment can be remo

ved using the f

ollo wing pr ocedure.
Cover (R), hanger Cover (L), hanger

RX board PD board

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

1-1. RX BOARD REMOVAL

Cover (R), hanger

5 Screw +P (2x6)

4 Screws +P (2x6)

RX board

2 Screw (M 1.7x4) 3

Hanger (R)

SP2 Pat, ear

4 Screw +P (2x6)

1-2. PD BOARD REMOVAL

Pat, ear

2 Screw (M 1.7x4)

Lid, battery case

Hanger (L)

PD board

Cover (L), hanger
SECTION 2 ELECTRICAL 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-IF130 MDR-IF230 or 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).
TUNING Adjustment Preparation :

AF OSC

MUTE ON POINT Adjustment Connection and Adjustments Location :
[RX BOARD] (Conductor side)

level meter

regulated DC power suppluy 1.2V DC
Transmitter 600 AUDIO IN B jack (J1) 1kHz 245mV (10dB)

TP51 (R-CH)

TP (VCC) TP (GND)
1. Feed a signal to jig (transmitter) and connect a power supply to DC IN jack (J4). 2. Apply DC 1.2V between TP (VCC) and TP (GND) on the RX board. 3. Set the RV1 (VOL) on the RX board to the minimum position. Procedure : 1. Connect the distortion meter to TP31 (L-ch) and TP51 (R-ch). 2. Turn on the power. 3. Adjust with L32 (L-ch) and L53 (R-ch) to minimize the reading on the distortion meter.

C35 C55

TP (GND)
Connection and Adjustment Location :
RV2 : Mute ON point Adjustment

TP (VCC)

TP (SW)

TP3 TP2

distortion meter TP (VCC)

TP31 (L-CH) RV1 (VOL)

10k 0.1F

TP (SIG)

TP (GND) TP51
Carrier frequency : 2.8MHz Modulation : 1kHz Deviation : 16kHz Output level : 34dB V

L53 L32 TP (VCC) TP (SW)

Procedure : 1. Short the circuit between TP2 and TP3. 2. Note down the level meter read at this time. 3. Release the short-circuit between TP2 and TP3. 4. Adjust RV2 so that the level meter read is 5dB to 10dB below the value noted down at step 2.
L32 : Tuning Adjustment (L-CH) L53 : Tuning Adjustment (R-CH)

FM RF signal generator

3-2. SCHEMATIC DIAGRAM
Note: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. : internal component. U : B+ Line. 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-signal conditions. Signal path. F : AUDIO J : RF

SECTION 4 EXPLODED VIEW

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.
SECTION 5 ELECTRICAL PARTS LIST
SEMICONDUCTORS In each case, u : , for example : uA. : A. , uPA. : PA. uPB. : PB. , uPC. : PC. uPD. : PD. CAPACITORS uF : F COILS uH : H When indicating parts by reference number, please include the board.
NOTE : -XX, -X mean standardized parts, so they may have some difference from the original one.

IF330R

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. C91 C92 C93 C94 C96

Part No.

Description 1uF 0.1uF 10%
Remark 16V 25V 50V 50V 50V
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 >
1-164-346-11 CERAMIC CHIP 1-164-004-11 CERAMIC CHIP 1-163-009-11 CERAMIC CHIP 1-163-009-11 CERAMIC CHIP 1-163-017-00 CERAMIC CHIP < DIODE >
0.001uF 10% 0.001uF 10% 0.0047uF 5%
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 C3 C4 C5 C6 C7 C8 C9 C10 C12 C13 C14 C15 C17 C31 C32 C33 C34 C35 C36 C37 C51 C52 C53 C54 C55 C56 C57 1-126-607-11 1-163-031-11 1-163-031-11 1-165-319-11 1-126-246-11 1-163-135-00 1-164-346-11 1-163-121-00 1-163-121-00 1-163-263-11 1-126-607-11 1-126-246-11 1-164-346-11 1-163-227-11 1-163-116-00 1-165-319-11 1-163-245-11 1-164-344-11 1-164-222-11 1-164-346-11 1-165-319-11 1-163-257-11 1-165-319-11 1-165-319-11 1-164-344-11 ELECT CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP ELECT CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP ELECT CHIP ELECT CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP 47uF 0.01uF 0.01uF 0.1uF 220uF 560PF 1uF 150PF 150PF 330PF 47uF 220uF 1uF 10PF 91PF 0.1uF 56PF 0.068uF 0.22uF 1uF 0.1uF 180PF 0.1uF 0.1uF 0.068uF 0.22uF 1uF 0.1uF 20% 4V 50V 50V 50V 4V 50V 16V 50V 50V 50V 4V 4V 16V 50V 50V 50V 50V 25V 25V 16V 50V 50V 50V 50V 25V 25V 16V 50V

D1 D2 D91

8-719-058-49 LED PP508 (INFRARED SENSOR) 8-719-058-49 LED PP508 (INFRARED SENSOR) 8-719-066-57 LED SA2512 (POWER) < FILTER >

FL31 FL51

1-239-762-11 FILTER, BAND PASS 1-239-763-11 FILTER, BAND PASS < IC >

IC1 IC2

8-759-364-96 IC TA2056FN-EL 8-759-289-74 IC NJM2076M(TE2) < JUMPER RESISTOR >

20% 5% 5% 5% 5% 20% 20%

1-216-295-00 METAL CHIP < COIL >
Ref. No. 13 Part No. 4-995-951-01 4-995-937-01 4-995-938-01 7-685-104-19 4-997-125-01 4-995-939-01 4-992-281-01 4-995-950-01 4-995-936-01 4-995-940-01 4-995-941-01 4-995-942-01 4-995-943-01 4-995-944-01 4-995-944-11 Description LID, BATTERY CASE TERMINAL (+), CHARGE (IF330R) TERMINAL (-), CHARGE (IF330R) SCREW +P 2X6 TYPE2 NON-SLIT BAND, HEAD (IF230) BAND, HEAD (IF330R) HOLDER, BALL SHAFT PAT, EAR COVER, TERMINAL (IF330R) SUSPENDER SPRING, SUSPENDER HANGER (R) HANGER (L) COVER (R), HANGER (IF230) COVER (R), HANGER(IF330R) Remark Ref. No. 19 * 20 * 25 SP1 SP2 Part No. 4-995-945-01 4-995-945-11 4-995-946-01 4-995-947-01 4-995-948-01 4-995-949-01 4-999-588-01 A-4542-500-A 1-669-731-11 4-995-952-01 4-995-954-01 4-995-955-01 3-713-791-01 1-505-117-21 1-505-117-21 Description COVER (L), HANGER (IF230) COVER (L), HANGER (IF330R) WINDOW (R), RAY CATCHER WINDOW (L), RAY CATCHER PLATE (R), FRONT PLATE (L), FRONT TERMINAL BOARD (+), BATTERY RX BOARD, COMPLETE PD BOARD TERMINAL (+), BATTERY TERMINAL (CHARGE), BATTERY (IF330R) TERMINAL (), BATTERY SCREW M 1.7X4 SPEAKER (L-CH) SPEAKER (R-CH) Remark

L1 L31 L32 L51 L52 L53

1-410-386-11 1-410-387-11 1-411-530-21 1-410-387-11 1-410-388-31
INDUCTOR CHIP INDUCTOR CHIP COIL (DET) INDUCTOR CHIP INDUCTOR CHIP

27uH 33uH 33uH 39uH

1-411-531-21 COIL (DET) < TRANSISTOR >

5% 10%

Q1 Q2 Q3 Q4 Q5 Q91 Q92
8-729-220-93 8-729-230-49 8-729-230-49 8-729-030-31 8-729-030-31
TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR
2SK209-G 2SC2712-YG 2SC2712-YG 2SA1182-0(TE85L) 2SA1182-0(TE85L)
8-729-929-41 TRANSISTOR UMA4 8-729-927-68 TRANSISTOR UMW1 < RESISTOR >
1-164-222-11 CERAMIC CHIP 1-164-346-11 CERAMIC CHIP 1-165-319-11 CERAMIC CHIP

1-216-053-00 METAL CHIP

Ref. No. R2 R3 R4 R5 R6 R7 R8 R9 R10 R31 R32 R33 R34 R51 R52 R53 R54 R91 R92 R93 R94 R95 Part No. 1-216-089-11 1-216-049-11 1-216-053-00 1-216-081-00 1-216-043-11 1-216-062-00 1-216-085-00 1-216-085-00 1-216-073-00 1-216-061-00 1-216-059-00 1-216-025-11 1-216-298-00 1-216-061-00 1-216-059-00 1-216-025-11 1-216-298-00 1-216-025-11 1-216-089-11 Description RES,CHIP RES,CHIP METAL CHIP METAL CHIP RES,CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP RES,CHIP METAL CHIP METAL CHIP METAL CHIP RES,CHIP METAL CHIP RES,CHIP RES,CHIP 47K 1K 1.5K 22K 560 3.6K 33K 33K 10K 3.3K 2.7K 100 2.2 3.3K 2.7K 100 2.47K 47K 10K 100 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% Remark 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W 1/10W

1-216-089-11 RES,CHIP 1-216-073-00 METAL CHIP 1-216-025-11 RES,CHIP
< VARIABLE RESISTOR > RV1 1-223-517-11 RES, VAR, CARBON 50K/50K ( VOL) RV2 1-223-274-11 RES, ADJ, CERMET 2.2K (MUTE ON POINT) ************************************************************ MISCELLANEOUS *************** SP1 SP2 1-505-117-21 SPEAKER (L-CH) 1-505-117-21 SPEAKER (R-CH)

Sony Corporation

9-923-355-11
Personal A&V Products Company
98C027546-1 Printed in Hungary 1998.3 Published by Quality Engineering Dept. (Shibaura)