Read Sharp PZ-50MR2E (serv.man9) Service Manual online
49
PZ-43MR2E
PZ-50MR2E
PZ-50MR2E
TROUBLE SHOOTING TABLE FOR PC I/F UNIT
No picture
NO
YES
No
TV
, video and component picture
Is input a
v
ailab
le at pins
(124), (133) and (139) of
IC4 nor
mal?
Chec
k CN6 and its
per
ipher
al circuits
.
NO
YES
Are TL207, TL208
and
TL211 nor
mal?
Chec
k CN6 and its
per
ipher
al circuits
.
NO
YES
Is digital output section
of IC4 nor
mal?
Chec
k IC4 and its
per
ipher
al circuits
.
NO
YES
Is digital output section
of IC310 nor
mal?
Chec
k IC310 and its
per
ipher
al circuits
.
NO
YES
Is digital output of IC25
nor
mal?
Chec
k IC25 and its
per
ipher
al circuits
.
No PC picture
YES
Is signal a
v
ailab
le at pins (21), (22), (24), (25), (27), (28), (30)
and (31) of IC413? (The signal is of high frequency (a little
less than 1GHz).
P
a
y due attention to it dur
ing obser
v
ation.)
Monitor prob
lem is lik
ely
.
NO
PC I/F Unit (CPCi-
0056CE) inter
nal prob
lem
is lik
ely
.
No MAIN picture on single screen and dual screen.
No SUB picture on dual screen
NO
YES
Is input a
v
ailab
le at pins
(126), (136) and (141) of
IC4 nor
mal?
Chec
k CN8 and its
per
ipher
al circuits
.
NO
YES
Is digital output section
of IC4 nor
mal?
Chec
k IC4 and its
per
ipher
al circuits
.
NO
YES
Is digital output of IC25
nor
mal?
Chec
k IC25 and its
per
ipher
al circuits
.
