RB1G
CHASSIS
W600A/ W603A/ W605A/ W607A/ W650A/ W651A/ W653A/
W654A/ W655A/ W656A/W657A/ W658A/ W670A/ W674A
419
Troubleshooting
3-5. No Picture
3-5-7. NO PICTURE: @ Tuner AEP-T2 / PA-T2 / CH / HK / AEP-T2C2S2(Terrestrial part)
No Picture
Noisy Picture
Which is NG?
Analog RF or Digital RF
Both
Sound is normal ?
Check IC9001(Brownie)/
IC9001(Ayu2)
Yes
Confirm ANT connection
Digital only
Connect ANT Cable
correctly
Confirm Power supply
for RF input circuit
A2.5V / LNA_5V
Confirm TV system
with manual tuning menu
(B/G,D/K,I,L,M)
Confirm RF Level and AGC
of Analog RF by Service mode
Analog only
OK
Set correct TV system
manually
OK
NG
No sound
Check RF input circuit
include IC2151
Check IC9001
(Brownie)
Confirm tuner control line
TU_SCL / TU_SDA
A_RESET
Confirm IF1 line
IFOUTP1 / IFOUTN1
NG
L
OK
OK
OK
Check Power supply
circuit
Check M’t condition
in tuner control line
Check M’t condition
in IF1 line
NG
NG
NG
AGC = 0
Confirm Power supply
for Digital Demod
DDEM1.2V (CH/HK) / DDEM1.1V (AEP-T2/PA-T2) /
DDEM3.3V
Confirm Demod control line
I2CB_SCL / I2CB_SDA
DMD_RESET / OSC_ENBN-1
OK
OK
Check Power supply
circuit
Check M’t condition
in Demod control line
Check M’t condition
in AGC2/IF2 line
NG
Check IC2201
NG
Error free
Confirm BER of digital RF
By Service mode
Check IC9001
(Brownie) and M’t
condition in TS line
Confirm RF Level and AGC
of Digital RF by Service mode
NG
RF Level =
High
RF Level =
Low
AGC = Low
AGC = high
Confirm AGC1
IC2151 Pin6
Check M’t condition
in AGC1 line
Input signal is too big
Set LNA off
H
Note:
(AYU2L) – IC9000
(Brownie)- IC9001
Size
B* Board Type
(Segment: LW)
OTHERS
EUROPE
JP
24”
BLX
BLE
BLJ
32”
BKX/BLX
BKE/BLE
BKJ/BLJ
42”
BKX/BLX
BKE/BLE
BKJ/BLJ
50”
BLX
BLE
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