Sharp XV-ZW99U - Checking the component system

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xv-zw99u
TROUBLE SHOOTING TABLE (Coutinued)
Checking the compornent system
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.Connector J405, IC410 or nearby circuit\
in trouble
:
Q405, Q408, Q412, Q413, Q416 i
or nearby circuit in trouble
i
.,
..i
the syncroniztion-1 ‘I j
..,,.........,.. . . . . . . .
IC402 or nearby circuit in trouble
:
Are there signal input at pins (28) (37)
and (66) of as specified IC4007 ?
I Yes
*:
IC4017 or nearby circuit in trouble
$_
Are there signals inputs at pins (30) thru No ki”‘..... ...
(37) (39) thru (42) and (48) thru (59)
_ lC3504, lC3516, IC4007 or nearby i
of lC35072
circuit in trouble
(25) of IC4016?
Yes
Are there signals input at pins (28) and
(65) of lC3507?
: ..’
No &
Go to “Checking PLL-2 circuit”
j
. . .
Are there signals input at pins (60) and
(61) of lC3507?
I Yes
No g
i Go to “Checking synchronization-2” 1
Are there Bus signals input at pins
(157). (158) and (161) of lC3507?
/
IC2001 or nearby circuit in trouble
i
‘.-
Are there signals input at pins (100)
(101) (103) thru (106) (108) (109)
i
r
lC3507, lC3508, IC2001 or nearby :
and (113) thru (120) of IC4008?
circuit in trouble
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Yes
Go to “Checking MMC circuit ”