Pip Tuner - Toshiba CN27E90 Technical Training Manual

4. PIP TUNER

TUNER SAW
SECTION FILTER
RF AGC
Fig. 2-7
4-1. Outline
The PIP tuner (EL922L) consists of a tuner and an IF block
integrated into one unit. The tuner receives RF signals
induced 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 I2C-bus.
As the IC for the IF, a PLL complete sync detection plus
audio inter carrier system are employed.
VIF/SIF
CIRCUIT
VIDEO AUDIO
AFT
OUTPUT OUTPUT OUTPUT
1
Terminal No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Fig. 2-8 Tuner terminal layout
23
Lable
Name
Lot No.
15
Name
NC
32V
S-CLOCK
S-DATA
NC
ADDRESS
5V
RF AGC
9V
AUDIO
GND
AFT
NC
GND
VIDEO