Technical information

2726
11. Power Supply Unit (P.S.U)
Is the
IC001
O.K?
Replace IC001
No
Is
voltage of C133
50Vdc?
No
Is
voltage of D002
130V (270V)?
Trouble in switching
power transformer T001
or IC001 and its ambient
circuit
Trouble in diode
D001,D002,D003,D004
or peripheral device
No
Is the
waveform of T001
pin5 correct?
Trouble in T001
or D130
No
Trouble in P.S.U
Is
power switch
on?
Switch on
No
Yes
Yes
Yes
Yes
Yes
Yes
Is
voltage of C130
80Vdc?
Trouble in T001 or D131
No
Is
fuse F001
O.K?
Check the power cord outlet
and diode D001,D002,D003,D004
No
A
10. Side-Pincushion Circuit
Check the Base
waveform of the Q515
Yes
Pincusion distortion
is excessive or barrel
O.K
Select the
side-pincushion
icon in OSD menu,
and adjust acceptable
position.
Yes
Is the
pin 24 waveform of
IC501
correct?
No
No
Trouble in IC501