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2. POP TUNER
TUNER
SECTION
SAW
FILTER
VIF/SIF
CIRCUIT
RF AGC
AFT
OUTPUT
VIDEO
OUTPUT
AUDIO
OUTPUT
Fig. 2-5
2-1. Outline
The POP tuner (EL922L) consists of a tuner and an IF block
integrated into one unit. The tuner receives RF signals in-
duced on an antenna and develops an AFT output, video
output, and audio output.
The tuner has receive channels of 181 as in the tuner for the
main screen and it is also controlled through the I
2
C-bus.
As the IC for the IF, a PLL complete sync detection plus
audio inter carrier system are employed.
Label
Name
Lot No.
1
15
Fig. 2-6 Tuner terminal layout
Terminal No. Name
1NC
2 32V
3 S-CLOCK
4 S-DATA
5NC
6 ADDRESS
75V
8 RF AGC
99V
10 AUDIO
11 GND
12 AFT
13 NC
14 GND
15 VIDEO