Read Sony KDL-40W580B / KDL-40W590B / KDL-40W600B / KDL-40W605B / KDL-40W607B / KDL-40W609B / KDL-48W580B / KDL-48W590B / KDL-48W600B / KDL-48W605B / KDL-48W607B / KDL-48W609B / KDL-60W605B / KDL-60W607B / KDL-60W610B / KDL-60W630B Service Manual online
Chassis: RB2G, HM
Chassis: RB2G, HM
57
Troubleshooting
2-4. NO PICTURE
2 4. NO PICTURE
No Picture
2-4-1. NO PICTURE: @ Tuner UC / KR
Noisy Picture
Which is NG?
Analog RF or Digital RF
B th
Sound is normal ?
Check IC9001(Brownie)/
IC9001(Ayu2)
Yes
Digital only
Analog only
N
d
Tuner
Both
Confirm ANT connection
OK
No sound
Connect ANT Cable
NG
Confirm RF Level and AGC
of Digital RF by Service mode
Confirm RF Level and AGC
of Analog RF by Service mode
Check Brownie
RF Level =
High
Check Brownie
AGC = 0
AGC = 0
Connect ANT Cable
correctly
RF Level = Low
RF Level = Low
RF Level = High
Confirm Power supply
for RF input circuit
A2.5V / LNA_5V
Confirm AGC1
IC2501 Pin6
L
H
OK
Check Power supply
circuit
NG
NG
Input signal is too big
Insert Attenuator
Check M’t condition
in AGC1 line
Confirm tuner control line
TU_SCL / TU_SDA
A_RESET
Confirm IF1 line
IFOUTP1 / IFOUTN1
OK
Check M’t condition
in tuner control line
Check M’t condition
in IF1 line
NG
NG
Check RF input circuit
include IC2501
IFOUTP1 / IFOUTN1
OK
in IF1 line
2.4-1 - No Picture: @ Tuner
Chassis: RB2G, HM
Chassis: RB2G, HM
58
TUS BOARD
TUS BOARD
Tuner
IC 2501
IC 2501
56
TUS Board
IC 2501
Chassis: RB2G, HM
Chassis: RB2G, HM
59
IFAGC 1
TUS BOARD
IFAGC_1
Tuner
TUS BOARD
Tuner
IC2501
IC2501
TUS Board
IC 2501
Chassis: RB2G, HM
Chassis: RB2G, HM
60
A2 5V
TUS BOARD
A2.5V
TUS BOARD
Tuner
IC2501
TUS Board
IC 2501
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