LG 55EG9600 Training page 15

55EG9600 Main Board (Rear View) Tuner Checks
TUNER B+ SOURCES:
Pin 1:
+3.3V_LAN_TU (Made from IC2302 out pin 6
through L2306 it becomes (+3.3V_Normal).
Through L6504 it becomes +3.3V_TU. Then
through L6500 to the Tuner pin 1.
TUNER SIGNALS:
Pin 6, 7 Dig Video: 230mV p/p
(Only when receiving 8VSB and QAM digital
signals)
Pin 8 SIF: 150mV p/p
Pin 9 CVBS: 1V p/p
(Only when receiving 8VSB Signals Antenna)
Pin 4 Clock and Pin 5 Data:
Only present during channel change. Run Auto
Programming to keep them engaged.
Both approx. 3.2V p/p
November 2018
TUNER PINS
9. CVBS
8. SIF
7. DIF (N)
6. DIF (P)
Tuner 5. SDA
4. SCL
TU6705
3. DIF_AGC
TDJH-H351F
2. N/C
1. 3.3V
9
8
2
1
Page 06
55EG9600 (2015) Main Board
1
P2399
RUN
1.54V
0.42V
0V
0V
3.28V
3.28V
0.60V
0V
3.28
15 1
LAN
JK5001
24
LG