Read Sharp XV-C2E (serv.man3) Service Manual online
XV-C2E
21
TROUBLE SHOOTING TABLE
Is the lamp on?
No
Yes
Check the lamp.
Check the ballast unit circuit.
Yes
Yes
Check the power unit circuit.
Is there signal at pins (21) and
(29) of IC801?
(29) of IC801?
Check IC401, DL401 and their
peripheral circuits.
peripheral circuits.
Is voltage applied at the EA
and EB connectorsof the sub-
unit?
and EB connectorsof the sub-
unit?
Check IC801, Q801, Q802, Q803
and their peripheral circuits.
and their peripheral circuits.
No
Yes
Is there signal at pins (1), (2) and (3)
of P803?
of P803?
Is there signal at pins (1) and (7) of
IC4110 as well as pin (1) of IC4109?
IC4110 as well as pin (1) of IC4109?
Check IC4111, IC4103, IC4102,
IC4101, IC4104 and their
peripheral circuits.
IC4101, IC4104 and their
peripheral circuits.
Yes
Is there signal at pins (6), (8) and
(10) of SC4202?
(10) of SC4202?
Check IC4211, IC4212, IC4203,
IC4204, IC4205, IC4206, IC4207,
IC4208, IC4209, IC4202 and their
peripheral circuits.
IC4204, IC4205, IC4206, IC4207,
IC4208, IC4209, IC4202 and their
peripheral circuits.
No
Yes
Is there signal at pins (1), (3) and (5)
of P4305?
of P4305?
Yes
Is there signal at pins (4), (5), (6), (7),
(8) and (9) of SC4301?
(8) and (9) of SC4301?
Yes
Check IC4305 and its peripheral
circuits.
circuits.
Check IC4306 and its peripheral
circuits.
circuits.
No
No picture
Check the panel and its
peripheral parts.
peripheral parts.
No
No
No
No
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