Sharp XV-ZW99U Service Manual page 39

I
xwzw99u
TROUBLE SHOOTING TABLE
(Coutinued)
Checking the PLL-1 circuit
No :
* Go to "Checking synchronization-l"
j
IC2001 or nearby circuit in trouble
i
lC3503 or nearby circuit in trouble
Checking the PLL-2 circuit
IC4006?
* Go to "Checking synchronization-2
:
.'.
:
(4) of IC4006?
Yes
IC2001 or nearby circuit in trouble
'.
IC4006 or nearby circuit in trouble
i
Checking synchronization-l
I
1
I
Do horizontal and vertical signals (at pins 5
(13) and (14) of RGB connector) come ;
Check pin (47) line of connector
out of PC?
SC1 001
I I :
:
1 Yes
fit-
No "';;;.
"',,,,,---~'
"1,;
'1;'
Are there signals input at pins (6) and (8) IC351$ iC3505 or nearby circuit in
:
t
".
".':
IC3511 or nearby circuit in trouble
/
:
I
Checking synchronization-2
I_
No
I
" ..
Are there signals input at pins (3) of 1
IC4018?
*, IC410, IC411 or nearby circuit in trouble
( Yes
c- trouble. "'..
Is there signal input at pin (4) of IC35107
IC4018, IC411 or nearby circuit in
IC3510 or nearby circuit in trouble
39