Sony TMR-IF130 Service Manual

TMR-IF130/IF230R

SERVICE MANUAL

TMR-IF130 is the component model block one in MDR-IF130K.
TMR-IF230R is the component model block one in MDR-IF230RK.
COMPONENT MODEL NAME FOR MDR-IF130K/IF230RK
MDR-IF130K MDR-IF230RK
Cordless Stereo Headphones MDR-IF230 MDR-IF230
Transmitter TMR-IF130 TMR-IF230R
General
Modulation system
Carrier frequency
Frequency response 18 – 22,000Hz
Power source
UK model
AEP model
Audio input
Dimensions
Mass
Design and specifications are subject to change without notice.
MICROFILM
AEP Model
Illustration : TMR-IF230R
SPECIFICATIONS
Frequency modulation
Right 2.8MHz
Left 2.3MHz
DC IN 9V jack accepts power supplied from the AC
power adaptor for use on the following voltages:
Operating voltage
230 - 240V AC,50Hz
220 - 230V AC,50Hz
Phono jacks/stereo mini jack
Approx. 152 x 40 x 72mm
(6 x 1 1 / x 2 3 / in.) (w/h/d)
2 4
Approx. 85g (3.0oz.)
INFRARED TRANSMITTER
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
UK Model
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:
2.3MHz ±2kHz
L-ch RV1
2.8MHz ±2kHz
R-ch RV2
Connection Points and Adjustments Location :
(Conductor side)
[TX BOARD]
regulated dc
power suppluy
9 Vdc
[TX BOARD] (Component side)
SECTION 1
ELECTRICAL ADJUSTMENT
frequency counter
TP TP
(CL4) (CL54)
(R-ch)
(L-ch)
TP
(CL4)
TP
(CL54)
RV1 RV2
(L-ch) (R-ch)
Oscillating frequency
adjustment
– 2 –