Read Sharp LL-T17D4H (serv.man6) Service Manual online
LL-T17D4-H/B
TROUBLE SHOOTING
5 – 2
3.
Show “No Signal ” on screen
NO
IC400 failure
YES
NO
YES
NO
Check CN602 Pin13, Pin14
Signal cable is not
fully connected
fully connected
Check IC400 Pin127 same as
V-sync of input
V-sync of input
Check IC400 Pin126 same as
H-sync of input
H-sync of input
D618 failure
D619 failure
(Test patern: 32 Gray 1280 x 1024@60Hz)
YES
NO
The Signal cable not fully
connected
IC400 failure
NO
Check signal cable fully connected between
signal source and Interface Board
signal source and Interface Board
Check CN602 Pin1, 2, 3
RIN, GIN, BIN
RIN, GIN, BIN
D614, D615, D616 failure
4. color interference
5. Show "No Signal" on screen
YES
NO
Check Signal cable fully
connected between signal
source and Interface Board
connected between signal
source and Interface Board
IC601, IC603, IC400 failure
The Signal cable not fully connected
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