SONY TMRIF330R
Service Manual

2-2. SCHEMATIC DIAGRAM

TMR-IF330R

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

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. � U : B+ Line. � H : adjustment for repair. � 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

PRE EMPHASIS Lout = L + K � (L�R) Rout = R � K � (L�R)

VCO

BUFFER

AGC MIX AMP LEVEL DET. O.S.M.

PRE EMPHASIS

VCO

BUFFER

R-CH L-CH IN

1

2
NF VREF

3
OFF T/C ON/OFF

4

5
GND VCC

6

7
SURROUND ON/OFF

8
R-CH OUT

�5�

�6�