Sharp XG-NV5XB, Руководство по обслуживанию

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36
XG-NV5XB
TROUBLE SHOOTING TABLE
(Continued)
Yes
Checking the output PWB unit
Are there signal inputs at
SC1404, SC1405, SC1501 and
SC1502?
Are voltages applied to EA
connectors and SC5502?
Yes
No
No No
Check IC1401 and their
peripheral circuits.
Are there signal outputs at
pins (14) ,(16) and (18) of
IC1401 ?
Yes
No
Are there signal inputs at pin
(47) of IC1101, IC1201 and
IC1301?
Yes
No
Check IC1101,IC1201,IC1301
and their peripheral circuits.
Are there signal outputs at pins
(17), (19), (21), (27), (29) and
(31) of IC1101, IC1201 and
IC1301?
Yes
Yes
No
Check IC1102,IC1202,IC1302
and their peripheral circuits.
Are there signal outputs at pins
(17), (19), (21), (27), (29) and
(31) of IC1102, IC1202 and
IC1302?
Yes
No
If there is no signal input at
pins (15) and (30) of
SC1101, SC1102 and
SC1103, check IC1409
and their peripheral
circuits.
No
If there is no signal input at
pins (1) and (31) of SC1101,
SC1102 and SC1103, check
the switching circuit and
amplifier circuit of IC1101,
IC1201, IC1301, IC1102,
IC1202, IC1302 and their
peripheral circuits.
Are there signal inputs at
SC1101, SC1201 and
SC1301?
Check IC1406, IC1407,
IC1408 and their
peripheral circuits.
Check the R, G and B panels.
If there is no signal at EA
connector or SC5502, go to
Checking the power unitblock.
If there is no signal at SC1404
and SC1405, go to "Trouble
shooting table for PC I/F unit".
If there is no signal at SC1501
and SC1502, go to the video
system block.
Check IC1401 and their
peripheral circuits.