Yes
No
No
No
No
Yes
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No picture, No sound
Fluorescent lamp failure to light up
Check all connection of each unit. (Refer to overall wiring diagram.)
Check all the settings microprocessor’s adjust process menu.
Do F3701 and F3702
function?
Remove F3701 and F3702 and
check the load side. Is there
short-circuiting?
Is there short-circuiting of
T3700 primary side periphery,
IC3700, Q3706 and P3703?
Replace F3701 and F3702.
Check T3700’s secondary side
periphery.
Are T3700’s secondary
outputs B31V, B9V, B5V and
B8V normal?
Check T3700’s primary side
periphery.
Check T3700’s primary side
periphery, Q3715 and their
peripheral parts.
Check T3700’s secondary
load.
Does F6551, F6552, F6553
and F6554 function?
Replace F6551, F6552,
F6553 and F6554.
Is the pin(10) of lC4512 in the
"H" state?
Check the OFL line
(Q3700), IC4512 and
their peripheral parts.
Are the Q6564, Q6566,
Q6568 and Q6570 short-
circuiting?
Check Q6564, Q6566,
Q6568, Q6570 and their
peripheral parts.
Is T6551 ~ T6554’s primary
oscillator waveform normal?
Check Q6551, Q6552, Q6554,
Q6555, Q6557, Q6558, Q6560,
Q6561 and connection cable.
Replace the Fluorescent lamp
with new one and check again.
To Next Page
Loading...
Need help?
General