Sony MDR-IF230 User manual

Ver 1.1 2000.06
Headphone
Charging and using hours (MDR-IF330R)
Approx. charging hours Approx. using hours*
11.5
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)
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.
MICROFILM
MDR-IF230/IF330R
SERVICE MANUAL
CORDLESS STEREO HEADPHONES
AEP Model
UK Model
MDR-IF130K MDR-IF230RKMDR-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-IF130K
or MDR-IF230RK.
MDR-IF330RisthecomponentmodelblockoneintheMDR-IF330RK.
Illustration : MDR-IF330R

– 2 –
SECTION 1
DISASSEMBLY
Note:Followthedisassemblyprocedureinthenumericalordergiven.
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) SP2 Pat, 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
Theequipmentcanberemo vedusingthef ollo wingpr ocedure .
Set Cover (R), hanger RX board
Cover (L), hanger PD board

– 4 –– 3 –
TUNING Adjustment
Preparation :
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.
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 mustbe 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 ex-
posed directly to external lights (such as incandescent lamp and
sun light).
Transmitter
AUDIO IN B jack (J1)
1kHz 245mV (–10dB)
AF OSC
ATT Jig
600
Ω
C35
C55
C 3
L 1
TP51
TP31
L53
L32
TP3 TP2
TP
(VCC)
TP
(GND)
TP
(SW)
regulated DC
power suppluy
1.2V DC
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)
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.
Connection and Adjustment Location :
MUTE ON POINT Adjustment
Connection and Adjustments Location :
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.
C35
C55
C 3
L 1
TP51
TP31
TP3
TP2
TP
(VCC)
TP
(SIG)
TP
(GND)
TP
(SW)
RV2
regulated DC
power suppluy
1.2V DC
level meter
TP51
(R-CH)
TP51
(R-CH)
TP3
RV2 : Mute ON point
Adjustment
TP2
TP (SIG)
10k
Ω
0.1 µ F
TP (VCC)
TP (GND)
[RX BOARD] (Conductor side)
FM RF signal
generator
Carrier frequency : 2.8MHz
Modulation : 1kHz
Deviation : 16kHz
Output level : 34dB
µ V

– 7 – – 8 –
3-2. SCHEMATIC DIAGRAM
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 Ωand 1/4W or less unless otherwise
specified.
•¢: internal component.
•U: B+ Line.
• Powervoltageis dc 1.2Vand fedwith regulated dc power
supply from battery terminal.
Voltages are dc with respect to ground under no-signal
conditions.
• Signal path.
F: AUDIO
J: RF
MDR-IF230/IF330R

– 9 – – 10 –
SECTION 4
EXPLODED VIEW
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.
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)
IF330R
SP1
SP2
1
23
25 4
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 reference
number in the exploded views are not
supplied.
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.
• SEMICONDUCTORS
In each case, u : µ, for example :
uA.... : µA.... , uPA.... : µPA....
uPB.... : µPB.... , uPC.... : µPC....
uPD.... : µPD....
• CAPACITORS
uF : µF
• COILS
uH : µH
When indicating parts by reference num-
ber, please include the board.
SECTION 5
ELECTRICAL 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 (+), 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
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
< 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 PASS
FL51 1-239-763-11 FILTER, BAND PASS
< IC >
IC1 8-759-364-96 IC TA2056FN-EL
IC2 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 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)
< TRANSISTOR >
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
< RESISTOR >
R1 1-216-053-00 METAL CHIP 1.5K 5% 1/10W
PD RX
Ver 1.1 2000. 06

– 11 –
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
< VARIABLE RESISTOR >
RV1 1-223-517-11 RES, VAR, CARBON 50K/50K (ÁVOL)
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)
Ref. No. Part No. Description Remark
RX

– 12 –
MDR-IF230/IF330R
9-923-355-11 Sony Corporation Personal A&V Products Company
98C027546-1
Printed in Hungary © 1998.3
Published by Quality Engineering Dept.
(Shibaura)