2
MICROFILM
TMR-IF130/IF230R
SERVICE MANUAL
US Model
TMR-IF230R
Canadian Model
E Model
Australian Model
TMR-IF130/IF230R
Illustration : TMR-IF230R
INFRARED TRANSMITTER
SPECIFICATIONS
TMR-IF130 is the component model block one in MDR-IF130K.
TMR-IF230R is the component model block one in MDR-IF230RK.
General
Modulation system
Frequency modulation
Carrier frequency
Right 2.8MHz
Left 2.3MHz
Frequency response
18 22,000Hz
Power source
DC IN 9V jack accepts power supplied from the AC
power adaptor for use on the following voltages:
Operating voltage
US, Canadian,
Central & South America model
120V AC,60Hz
Australian model
240V AC,50Hz
E model
220 - 230V AC,50Hz
Audio input
Phono jacks/stereo mini jack
Dimensions
Approx. 152 x 40 x 72mm
(6 x 1 1/2 x 2 3/4in.) (w/h/d)
Mass
Approx. 85g (3.0oz.)
Design and specifications are subject to change without notice.
Ver 1.0
1998. 05
SECTION 1
ELECTRICAL ADJUSTMENT
NOTE :
1. The adjustments should be performed in the order given.
2. The adjustments and measurements should be perfomed for both
L-ch and R-ch unless otherwise indicated.
3. L-ch adjustment should be completed before performing R-ch
adjustment.
OSCILLATING FREQUENCY Adjustment
Procedure :
No signal state.
1. Connect the frequency counter to TP (CL4) (L-ch) and TP (CL-
54) (R-ch).
2. Adjust with RV1 (L-ch) and RV2 (R-ch) so that the reading on
the frequency counter becomes the specified value.
Specified Value:
L-ch
RV1
2.3MHz
±2kHz
R-ch
RV2
2.8MHz
±2kHz
Connection Points and Adjustments Location :
TP
(CL54)
(R-ch)
frequency counter
TP
(CL4)
(L-ch)
[TX BOARD]
TP
(CL4)
TP
(CL54)
regulated dc
power suppluy
9 Vdc
(Conductor side)
RV2
(R-ch)
RV1
(L-ch)
[TX BOARD]
Oscillating frequency
adjustment
(Component side)
MDR-IF130K
MDR-IF230RK
Cordless Stereo Headphones
MDR-IF230
MDR-IF230
Transmitter
TMR-IF130
TMR-IF230R
COMPONENT MODEL NAME FOR MDR-IF130K/IF230RK
5
6
TMR-IF130/IF230R
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
and 1/4 W or less unless otherwise
specified.
·
%
: indicates tolerance.
· H : adjustment for repair.
r
IC BLOCK DIAGRAM
IC11 TA2061AF-EL
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
R-CH
IN
NF
VREF
L-CH
IN
AGC
T/C
AGC
ON/OFF
F0
ADJ
(R)
VCC
L-CH
OUT
ADJ
ON/OFF
AUTO
OFF
T/C
GND
F0
ADJ
(L)
SURROUND
ON/OFF
R-CH
OUT
LEVEL
DET.
LEVEL
DET.
AGC
MIX AMP
AGC
O.S.M.
Lout = L + K · (LR)
Rout = R K · (LR)
PRE
EMPHASIS
PRE
EMPHASIS
VCO
VCO
BUFFER
BUFFER
VREF
2-2. SCHEMATIC DIAGRAM
· Power voltage is dc 9 V and fed with regulated dc power
supply from external power voltage jack (J4).
· Voltages are dc with respect to ground under no-signal
conditions.
· Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
· Signal path.
F
: AUDIO
J
: RF
7
8
SECTION 3
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.
· The mechanical parts with no reference number in the
exploded views are not supplied.
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
4-995-960-01 CABINET (UPPER) (IF130)
* 1
X-4947-816-1 CABINET (UPPER) ASSY (IF230R)
* 2
1-669-729-11 CHARGE BOARD (IF230R)
3
7-685-104-19 SCREW +P 2X6 TYPE2 NON-SLIT
4
4-979-841-01 COVER (SWITCH) (IF230R)
* 5
A-4542-502-A TX BOARD, COMPLETE (IF130)
* 5
A-4542-505-A TX BOARD, COMPLETE (IF230R)
* 6
X-4948-069-1 CABINET (LOWER) ASSY (IF230R)
* 6
X-4949-960-1 CABINET (LOWER) ASSY (IF130)
7
4-984-729-01 FOOT, RUBBER
8
4-979-840-11 CABINET (LOWER) (IF230R)
8
4-995-961-01 CABINET (LOWER) (IF130)
9
4-987-261-01 TERMINAL (+), BATTERY (IF230R)
10
4-900-350-01 TERMINAL (CHARGE -) (IF230R)
1
1
2
3
3
4
5
6
7
8
9
10
not supplied
not supplied
IF230R
IF130
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.... :
µ A.... , uPA.... : µ PA....
uPB.... :
µ PB.... , uPC.... : µ PC....
uPD.... :
µ PD....
· CAPACITORS
uF :
µ F
· COILS
uH :
µ H
When indicating parts by reference num-
ber, please include the board.
SECTION 4
ELECTRICAL PARTS LIST
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
*
1-669-729-11 CHARGE BOARD (IF230R)
**************
4-900-350-01 TERMINAL (CHARGE -) (IF230R)
4-987-261-01 TERMINAL (+), BATTERY (IF230R)
< DIODE >
D101
8-719-066-58 LED SM2512 (CHARGE) (IF230R)
< RESISTOR >
R101
1-216-045-00 METAL CHIP
680
5%
1/10W
(IF230R)
R102
1-216-023-00 METAL CHIP
82
5%
1/10W
(IF230R)
R103
1-216-045-00 METAL CHIP
680
5%
1/10W
(IF230R)
R104
1-216-047-91 RES,CHIP
820
5%
1/10W
(IF230R)
************************************************************
*
1-669-728-11 LED BOARD
*********
< DIODE >
D1
8-719-992-13 LED LIR5BE (INFRARED EMITTER)
D2
8-719-992-13 LED LIR5BE (INFRARED EMITTER)
D3
8-719-992-13 LED LIR5BE (INFRARED EMITTER)
D4
8-719-992-13 LED LIR5BE (INFRARED EMITTER)
************************************************************
*
A-4542-502-A TX BOARD, COMPLETE (IF130)
*
A-4542-505-A TX BOARD, COMPLETE (IF230R)
******************
< CAPACITOR >
C1
1-126-963-11 ELECT
4.7uF
20%
50V
C2
1-126-786-11 ELECT
47uF
20%
16V
C3
1-126-157-11 ELECT
10uF
20%
16V
C6
1-163-031-11 CERAMIC CHIP
0.01uF
50V
C7
1-126-963-11 ELECT
4.7uF
20%
50V
C8
1-126-934-11 ELECT
220uF
20%
16V
C11
1-124-464-11 ELECT
0.22uF
20%
50V
C12
1-163-031-11 CERAMIC CHIP
0.01uF
50V
C13
1-164-161-11 CERAMIC CHIP
0.0022uF 10%
100V
C14
1-163-245-11 CERAMIC CHIP
56PF
5%
50V
C51
1-124-464-11 ELECT
0.22uF
20%
50V
C53
1-164-161-11 CERAMIC CHIP
0.0022uF 10%
100V
C54
1-163-245-11 CERAMIC CHIP
56PF
5%
50V
C91
1-163-031-11 CERAMIC CHIP
0.01uF
50V
C92
1-104-664-11 ELECT
47uF
20%
16V
C93
1-163-031-11 CERAMIC CHIP
0.01uF
50V
C94
1-104-664-11 ELECT
47uF
20%
16V
C95
1-165-319-11 CERAMIC CHIP
0.1uF
50V
C97
1-163-031-11 CERAMIC CHIP
0.01uF
50V
< CONNECTOR >
* CN1
1-506-984-11 PIN, CONNECTOR (PC BOARD) 2P (IF230R)
< IC >
IC11
8-759-497-48 IC TA2061AF-EL
IC91
8-759-095-60 IC S-81250PG
< JACK >
J1
1-764-270-11 JACK,STEREO MINIATURE(DIA.3.5)
(AUDIO IN B)
J2
1-784-910-21 JACK, PIN (AUDIO/IN A L-CH)
J3
1-784-910-11 JACK, PIN (AUDIO/IN A R-CH)
J4
1-778-380-11 JACK,DC(POLARITY UNIFIED TYPE)
(DC IN 9V)
< TRANSISTOR >
Q11
8-729-119-76 TRANSISTOR 2SA1175-HFE
Q12
8-729-024-00 TRANSISTOR 2SC3377-QR
Q13
8-729-119-78 TRANSISTOR 2SC403SP-51
Q51
8-729-119-76 TRANSISTOR 2SA1175-HFE
Q52
8-729-024-00 TRANSISTOR 2SC3377-QR
Q53
8-729-119-78 TRANSISTOR 2SC403SP-51
Q92
8-729-422-57 TRANSISTOR UN4111
Q93
8-729-029-72 TRANSISTOR DTC114YS-TP
< RESISTOR >
R1
1-216-130-00 RES,CHIP
3.3M
5%
1/10W
R2
1-216-041-00 METAL CHIP
470
5%
1/10W
R3
1-216-113-00 METAL CHIP
470K
5%
1/10W
(IF230R)
R11
1-216-091-00 METAL CHIP
56K
5%
1/10W
R12
1-216-025-91 METAL CHIP
100
5%
1/10W
LED
TX
CHARGE
9
Ref. No.
Part No.
Description
Remark
TX
R13
1-216-043-91 METAL CHIP
560
5%
1/10W
R14
1-216-338-11 RES,CHIP
30K
1%
1/10W
R15
1-216-596-11 RES,CHIP
2.7K
1%
1/10W
R16
1-216-053-00 METAL CHIP
1.5K
5%
1/10W
R17
1-216-041-00 METAL CHIP
470
5%
1/10W
R18
1-216-003-11 RES,CHIP
12
5%
1/10W
R19
1-216-053-00 METAL CHIP
1.5K
5%
1/10W
R51
1-216-091-00 METAL CHIP
56K
5%
1/10W
R52
1-216-025-91 METAL CHIP
100
5%
1/10W
R53
1-216-043-91 METAL CHIP
560
5%
1/10W
R54
1-216-338-11 RES,CHIP
30K
1%
1/10W
R55
1-216-596-11 RES,CHIP
2.7K
1%
1/10W
R56
1-216-053-00 METAL CHIP
1.5K
5%
1/10W
R57
1-216-041-00 METAL CHIP
470
5%
1/10W
R58
1-216-003-11 RES,CHIP
12
5%
1/10W
R59
1-216-053-00 METAL CHIP
1.5K
5%
1/10W
R94
1-216-073-00 METAL CHIP
10K
5%
1/10W
R97
1-216-017-11 RES,CHIP
47
5%
1/10W
< VARIABLE RESISTOR >
RV1
1-241-767-21 RES, ADJ, CARBON 100K
(OSC FREQUENCY L-CH)
RV2
1-241-767-21 RES, ADJ, CARBON 100K
(OSC FREQUENCY R-CH)
< SWITCH >
S1
1-554-419-00 SWITCH, PUSH (1 KEY) (POWER) (IF230R)