LA3450
No.2393–7/15
Description of External Parts
Name
Symbol
Kind
Value
Remarks
Capacitor
C1
Ceramic
100 to 1000pF
Inprovement in stereo low-frequency distortion
(Note1)
0.047
μ
F
0.1 to 0.47
μ
F
C2
Polyester film
DC cut
Loop filter, Input pilot 8mV or greater : 0.1
μ
F
14mV or greater : 0.22
μ
F
20mV or greater : 0.47
μ
F
Loop filter, Input pilot 8mV or greater : 0.47
μ
F
14mV or greater : 1
μ
F
Sync detection filter
C3
Electrolytic
C4
Electrolytic
0.47
μ
F to 1
μ
F
C5
Electrolytic
1
μ
F
1
μ
F
0.01
μ
F
0.01
μ
F
0.47
μ
F
0.47
μ
F
510pF
C6
Electrolytic
Sync detection filter
C7
Polyester film
For integration (generation of triangular wave)
C8
Polyester film
DC cut
C9
Electrolytic
For integration (generation of triangular wave)
C10
Electrolytic
DC cut
De-emphasis capacitor, R5. C11=50
μ
s (75
μ
s)
C11 to 12
Ceramic
R4. C12=50
μ
s (75
μ
s)
C13
Electrolytic
10
μ
F
33
μ
F
100
μ
F
100
μ
F
10
μ
F
1000pF
DC cut
C14
Electrolytic
DC cut
C15
Electrolytic
Filter, S/N improvement
C16
Electrolytic
Power filter
C17 to 18
Electrolytic
DC cut
C19
Ceramic
LPF for sub signal attenuation
C20 to 21
Ceramic
100pF
Improvement in separation at high frequencies (Note 2)
C22
Ceramic
4700pF
3.3 to 6.8k
19kHz tank circuit (generation of sine wave)
Loop filter, Input pilot 8mV or greater : 6.8k
14mV or greater : 3.3k
Fixing of cal-tone OSC frequency
Resistor
R1
Carbon
R2
Carbon
10k
1k
100k
100k
3.3k
3.3k
2k
10k
30k
1M
R3
Carbon
Limiting resistor
R4 to 5
Carbon
Post amplifiler feedbak resistor, de-emphasis resistor
R6 to 7
Carbon
For separation adjustment
R8 to 9
Carbon
LPF input resistor (Note 3)
R10 to 11
Carbon
LPF output resistor
R12
Carbon
LPF for sub signal attenuation
R13
Carbon
Generation of pilot cancel signal
Semifixed
VR1
Carbon
Pilot cancel adjustment
resistor
VR2 to 3
Carbon
Separation adjustment
Resonator
X
Ceramic
CSB456F11 (Murata), KBR-457HS (Kyocera)
Diode
D1
Silicon (Low leak)
Improvement in stereo start time after VCO stop release
Coil
L1
15mH
19kHz tank circuit (generation of sine wave)
Note 1 : C1 differs with set models. Capacitor used to phase the sub signal of the decoder with the reproduction sub signal
in the PLL.
Note 2 : C20 to 21 are set to the optimum value according to each set mode.
Note 3 : The LPF input resistor value is 3.3k
or greater.