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2-2. SCHEMATIC DIAGRAM
TMR-IF130/IF230R
r IC
BLOCK DIAGRAM
ADJ ON/OFF
IC11 TA2061AF-EL
L-CH OUT AGC AUTO AGC T/C (R) F0 ADJ (L)
16
15 VREF
14
13 LEVEL DET.
12
11
10
9
AGC
PRE EMPHASIS Lout = L + K � (L�R)
VCO
BUFFER
IN
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.
Rout = R � K � (L�R)
� 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 production tolerances. � Signal path. F : AUDIO J : RF
AGC MIX AMP LEVEL DET. O.S.M.
NF VREF
PRE EMPHASIS
R-CH L-CH
VCO
BUFFER
1
2
3
4
5
GND VCC
6
7
SURROUND ON/OFF
8
R-CH OUT
�5�
OFF T/C ON/OFF
�6�
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