Sharp XV-ZW99U - Checking the B signal line of output PWB

I
xv-zw99u
TROUBLE SHOOTING TABLE (Coutinued)
Checking the B signal line of output PWB
I
specified?
I Yes
..,
No :
.,
w
Check pm (51) line of connector
sc1001
i--.__--_
Are output at pin (30) of IClOlO as
1-2
specified?
; ICl 010 or nearby circuit in trouble
Are output at pin (16) of ICl 012 as
specified?
I Yes
No ;‘..
*jIClOlZ or nearby circuit in trouble
Are signal outputs at pins (17) (19) (21)
(27) (29) and (31) of IC1019?
t-
! ICl 019 or nearby circuit in trouble
Connector SC1 014
poorly soldered or
t
No
No
Is PSIG signal at pin (1) of connector
*
Does PSIG signal at pin(l) of IC1019
) IC1008, IC1009, IC1019 or nearby
SC1 014 as specified?
circuit in trouble
I I I
I
YC?S Yes
,...
I
, &Jn f’ .”
.._
Is Common bias at pin (24) of connector
SC1 014 as specified?
01014-1017 or their signal line trouble
Panel in trouble : y Does PSIG signal at pin(l) of IC1019 1
’ Ql 018-l 021 or their signal line trouble j
35