Sony TMR-IF130, Service Manual

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MICROFILM
TMR-IF130/IF230R
SERVICE MANUAL
INFRARED TRANSMITTER
SPECIFICATIONS
AEP Model
UK Model
TMR-IF130 is the component model block one in MDR-IF130K.
TMR-IF230R is the component model block one in MDR-IF230RK.
MDR-IF130K MDR-IF230RK
Cordless Stereo Headphones MDR-IF230 MDR-IF230
Transmitter TMR-IF130 TMR-IF230R
COMPONENT MODEL NAME FOR MDR-IF130K/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
UK model 230 - 240V AC,50Hz
AEP 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 /
4
in.) (w/h/d)
Mass Approx. 85g (3.0oz.)
Design and specifications are subject to change without notice.
Illustration : TMR-IF230R
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)