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Copyright © 2014 LG Electronics Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only
Check RF Cable
Y
Maybe LGE2122 (IC105)
has problems
Check Tuner Power
(3.3V, 1.1 or 1.2V)
N
Replace one of Bead
& Recheck
Y
Check IF Signal pin #6,7
N
Maybe Tuner has problems
Y
3-1. TV Video Trouble Shooting
Pin No.
Description
1
3.3V
2
RF_SWITCH_CTL
3
IF_AGC
4
I2C_SCL6
5
I2C_SDA6
6
IF_P
7
IF_N
8
NC
9
NC
10
NC
11
3.3V
12
DEMOD1_TS_ERROR
13
GND
14
FE_TS_CLK
15
FE_TS_SYNC
16
FE_TS_VAL
17
FE_TS_DATA[0]
18
FE_TS_DATA[1]
19
FE_TS_DATA[2]
20
FE_TS_DATA[3]
21
FE_TS_DATA[4]
22
FE_TS_DATA[5]
23
FE_TS_DATA[6]
24
FE_TS_DATA[7]
25
RESET
26
3.3V
27
I2C_SCL4
28
Demod_Core
29
LNB_TX
30
I2C_SDA4
57
LNA_CTRL_1
58
LNA_CTRL_2
Checking order
1. Check Tuner power (Pin #1, #11, #26)
2. Check Tuner I2C level (Pin #4, #5, #27, #30)
3. Check IF_AGC level (Pin #3)
4. Check IF Signal(Pin #6, #7)
Содержание 60PB660V
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