Akai LT-32Q5LFH Service Manual page 64

32" wide tft lcd tv
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No.
Problem
48
DRX AGC Hangup
53
MSP Automatic Stan-
dard Detection
54
MSP Standard Toggle
in HDEV-Mode fails
CIRCUIT DESCRIPTIONS
Description
If VAGC_REDUC>0 and positive
signal jumps above top level, AGC
hangup may occur and CVBS out-
put level is reduced.
Automatic standard detection fails,
if EIA-J is selected as preferred
4.5MHz-sound carrier.
Toggling between Standard 3 and 8
while Mod_HDEV_A = 1 leads to
occasional sound impairments
Comment
firmware redesign D1
workaround:
KI_CHANGE_TH = 19 after stan-
dard change
firmware redesign D4
workaround:
avoid Mod_4_5MHz[1:0]=[1,0]. If
Mod_ASS and Mod_Dis_Std_Chg
= 1, EIA-J is detected anyhow
firmware redesign D4
workaround: not available
OK
D2
D4
D4

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