Read Sharp XV-Z1E Service Manual online
TROUBLE SHOOTING TABLE
(Continued)
35
XV-Z1E/A
Checking the B signal line of output PWB
No
Yes
Connector CC poorly soldered or in
trouble.
trouble.
Are outputs at pins (6), (7) and (8) of
IC4034 as specified?
IC4034 as specified?
Are there signal inputs at pins (1)
each of IC4001 thru IC4006?
each of IC4001 thru IC4006?
Check connector CC. Do signals go
to pins (22), (23), (25), (26), (28) and
(29) of this connector?
to pins (22), (23), (25), (26), (28) and
(29) of this connector?
IC4034, IC5002 or nearby circuit in
trouble.
trouble.
Yes
Are there signal outputs at pins (7),
(8) and (14) of IC4007 and IC4008?
(8) and (14) of IC4007 and IC4008?
IC4001 thru IC4006, IC4007, IC4008
or nearby circuit in trouble.
or nearby circuit in trouble.
Yes
Are signals fed from pins (2) thru (7)
of connector BP to the panel?
of connector BP to the panel?
Connector BP poorly soldered or in
trouble.
trouble.
Yes
Does flicker happen?
Go to "Checking the image for
shifting".
shifting".
Yes
Is frame pulse fed to pin (1) of
connector BP?
connector BP?
Yes
Is common bias at pin (24) of
connector BP as specified?
connector BP as specified?
Yes
Panel in trouble.
Yes
Yes
Q4024, Q4025, Q4026 or their signal
line in trouble.
line in trouble.
Does frame pulse go out of IC4077?
Yes
Are FRP1 and FRP2 signals fed to
pins (9) and (12) of IC4077?
pins (9) and (12) of IC4077?
Any of IC4001 thru IC4006 faulty.
IC4077 or nearby
circuit in trouble.
circuit in trouble.
No
IC1001 or nearby
circuit in trouble.
circuit in trouble.
No
No
No
No
No
No
No
Click on the first or last page to see other XV-Z1E service manuals if exist.