Sharp AQUOS LC-22AD1E, Руководство по обслуживанию

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15
LC-22AD1E
TROUBLE SHOOTING TABLE
Ye
s
No No
No No
Ye
s
No No No No
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
No picture, No sound
Fluor
escent lamp failur
e to light up
Chec
k all connection of each unit.
(Ref
er to o
v
erall wir
ing diagram.)
Chec
k all the settings microprocessor’s adjust process menu.
Do F3701 and F3702 function?
Remo
v
e F3701 and F3702 and
chec
k the load side
. Is there
shor
t-circuiting?
Is there shor
t-circuiting of
T3700 pr
imar
y side per
ipher
y,
IC3700, Q3706 and P3703?
Replace F3701 and F3702.
Chec
k T3700’s
secondar
y side
per
ipher
y.
Are T3700’s
secondar
y
outputs B31V
, B9V
, B5V and
B8V nor
mal?
Chec
k
T3700’s pr
imar
y side
per
ipher
y.
Chec
k
T3700’s pr
imar
y side
per
ipher
y, Q3715 and their
per
ipheral par
ts
.
Chec
k T3700’s
secondar
y
load.
Does F6551, F6552, F6553 and F6554 function?
Replace F6551, F6552, F6553 and F6554.
Is the pin(10) of lC4512 in the "H" state?
Chec
k the OFL line
(Q3700), IC4512 and their per
ipheral par
ts
.
Are the Q6564, Q6566, Q6568 and Q6570 shor
t-
circuiting?
Chec
k Q6564, Q6566,
Q6568, Q6570 and their per
ipheral par
ts
.
Is
T6551 ~
T6554’s pr
imar
y
oscillator w
a
v
ef
or
m nor
mal?
Chec
k Q6551, Q6552, Q6554,
Q6555, Q6557, Q6558, Q6560, Q6561 and connection cab
le
.
Replace the Fluorescent lamp with ne
w one and chec
k again.