Sharp LC-15PX1U, Руководство по обслуживанию

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LC-15PX1U
20
TROUBLE SHOOTING TABLE
No picture and sound
Chec
k all the settings on the microprocessor's adjust process men
u.
Fluorescent light in tr
oub
le
YES
YES
YES YES
YES YES
NO
NO
NO
NO
NO NO
YES YES
NO
Does the load side k
eep
nor
mal circuits when F3701
and F3702 are disconnected?
Are F3701, F3702, F6501 and F6502 nor
mal?
Do Q6502 and Q6505 k
eep
nor
mal circuits?
Chec
k Q6502, Q6505 and
their per
ipher
al circuits
.
Chec
k S4053 and the
connecting cab
les
.
Chec
k the connecting cab
les
and the per
ipher
al circuits of
J3701.
Are pins (10) and (11) of IC1201 "H"? Are the oscillation w
a
v
es from
the pr
imar
y sides of
T6500
thr
u T6502
nor
mal?
Chec
k and replace the
fluorescent light.
Chec
k the connecting cab
les
and the per
ipher
al circuits of
Q6500 thr
u Q6505.
Chec
k that line
, IC1201 and
their per
ipher
al circuits
.
Are +35V
, +9V
, +5V and -12V
on the secondar
y side output
at T701
nor
mal?
Are pins (14) of IC702 thr
u
IC707 nor
mal? (1.35V
-2.05V)
Chec
k the load side
.
Do Q716, S4053 and the per
ipher
al circuits on the
pr
imar
y side of
T701 k
eep
nor
mal circuits?
Replace F3701 and F3702.
Are F3701 and F3702 nor
mal?