Sony KLV-28R412B Service Manual page 44

3-9. Tuner
3-9-1. Analog Tuning
FOR ANALOG TUNING: @ All destination.
Analog Tuning
For Other destination
Channel can be lock?
OK
Picture quality become noisy
OK
Confirm RF level and IFAGC1 (V)
of Analog RF (Fig: 1)
OK
Please re-upgrade Firmware (PKG),
Check again Picture quality?
OK
Done (End)
For LA-ISDB(BR/AR) and LA-T2(COL) only
Confirm ANT or Cable connection
NG
Check below part mounting
condition, OK?
NG
FB1002, FB1003, C1002, C1003,
R1011, R1012, R1015, C1012,
R1001, R1003, C1016, R1013
NG
NG
R410/412/413/420/422/423/424/425/426/427/428/430/433/435/
450/453/455/470/472/473/475/477/478/480/483/485/M5/M10B
Destination
BR/LA-T2
IFAGC1 (V) tolerance ±0.1V
NG
OK
Change B-board
ITC3
Fig.1
RF level RF level
IFAGC1 (V)
(dBm) (dBuV)
-35 80 0.514
B*Board Type:
B* Board Type
Size
PAN ASIA, CHINA EUROPE, AMERICA
28" BIS -
32" BIS BIL
40" BIS BIL
48" BIS BIL
44
CHASSIS