Sharp XG-NV1E, Руководство по обслуживанию

Страница: 27 / 66

XG-NV1E
XG-NV1EA
TROUBLE SHOOTING TABLE
(Continued)
27
Checking the R signal line of output PWB
No
Yes
Connector CC poorly soldered or in
trouble.
Are outputs at pins (2), (18) and (19)
of IC4034 as specified?
Are there signal inputs at pins (1)
each of IC4401 thru IC4406?
Check connector CC. Do signals go
to pins (13), (14), (16), (17), (19) and
(20) of this connector?
IC4034, IC5002 or nearby circuit in
trouble.
Yes
Are there signal outputs at pins (7),
(8) and (14) of IC4036 and IC4407? IC4401 thru IC4406, IC4436, IC4407
or nearby circuit in trouble.
Yes
Are signals fed from pins (2) thru (7)
of connector RP to the panel? Connector RP poorly soldered or in
trouble.
Yes
Does flicker happen?
Go to "Checking the image for
shifting".
Yes
Is frame pulse fed to pin (1) of
connector RP?
Yes
Is common bias at pin (24) of
connector RP as specified?
Yes
Panel in trouble.
Yes
Yes
Q4024, Q4025, Q4026 or their signal
line in trouble.
Does frame pulse go out of IC4077?
Yes
Are FRP1 and FRP2 signals fed to
pins (9) and (12) of IC4077?
Any of IC4401 thru IC4406 faulty.
IC4077 or nearby
circuit in trouble.
No
IC1001 or nearby
circuit in trouble.
No
No
No
No
No
No
No