Sharp XG-NV1E, Руководство по обслуживанию

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XG-NV1E
XG-NV1EA
TROUBLE SHOOTING TABLE
(Continued)
26
Checking the G signal line of output PWB
No
Yes
Connector CC poorly soldered or in
trouble.
Are outputs at pins (3), (4) and (5) of
IC4034 as specified?
Are there signal inputs at pins (1)
each of IC4038 thru IC4043?
Check connector CC. Do signals go
to pins (4), (5), (7), (8), (10) and (11)
of this connector?
IC4034, IC5002 or nearby circuit in
trouble.
Yes
Are there signal outputs at pins (7),
(8) and (14) of IC4044 and IC4045? IC4038 thru IC4043, IC4044, IC4045
or nearby circuit in trouble.
Yes
Are signals fed from pins (2) thru (7)
of connector GP to the panel? Connector GP 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 GP?
Yes
Is common bias at pin (24) of
connector GP 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 IC4038 thru IC4043 faulty.
Checking the image for shifting
Yes Yes
IC1001 or nearby circuit in trouble.
Are signals fed via IC4074, IC4075
and IC4076 to the panel?
Panel in trouble.
Are signals fed to IC4074, IC4075
and IC4076?
IC4074, IC4075, IC4076 or nearby
circuit in trouble.
IC4077 or nearby
circuit in trouble.
No
IC1001 or nearby
circuit in trouble.
No
No
No
No
No
No No
No
No