Read Sharp XG-NV5XE (serv.man40) Service Manual online
38
XG-NV5XE
XG-NV5XM
XG-NV5XM
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-1
Checking the clock circuit and its peripheral circuits
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Is X8001 (6MHz) oscillating?
X8001 or its peripheral part faulty.
No
No
Is X8002 (32.768kHz) oscillating?
X8002 or its peripheral part faulty.
No
Is X8004 (22.165MHz) oscillating?
X8004 or its peripheral part faulty.
No
Is X8005 (16.25MHz) oscillating?
X8005 or its peripheral part faulty.
Is X8003 (1.84MHz) oscillating?
No
Does pin (162) of IC8001 function?
X8003 or its peripheral part faulty.
IC8001 or its peripheral circuit faulty.
Check the sync signal circuit and its
peripheral circuits.
peripheral circuits.
No
Are there signals at pins (46), (48)
and (50) of CON2 (P8404)?
and (50) of CON2 (P8404)?
LCP circuitry faulty.
No
No
Are there signals at pin (7) of IC8036?
IC8023, IC8034, IC8036 or its
peripheral circuit faulty.
peripheral circuit faulty.
No
Are there signals at pins (149) and
(150) of IC8020?
(150) of IC8020?
IC8025 or its peripheral circuit faulty.
Is the input having a resolution below
S-VGA level or in the video mode?
S-VGA level or in the video mode?
Yes
No
Are there signals at pins (14), (16) and
(18) of CON4 (P8405) connector?
(18) of CON4 (P8405) connector?
IC8029 or its peripheral circuit faulty.
IC8025 or its peripheral circuit faulty.
IC8029 or its peripheral circuit faulty.
No
No
No
Are there signals at pins (26), (28)
and (29) of IC8020?
and (29) of IC8020?
IC8020 or its peripheral circuit faulty.
Are there signals at pins (168) thru
(172) of IC8029?
(172) of IC8029?
Are there signals at pins (38) and
(53) of P405?
(53) of P405?
Go to "Checking the PLL circuit and
its peripheral circuits".
its peripheral circuits".
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