BBK DK1410SI - Page 54

No screen display
Check whether
voltage of pin 3, 4 of XP505
is normal. FL+ is -16V
and FL- is
-19V.
Check the corresponding
power supply circuit
Check the corresponding
power supply circuit
Check whether
power supply of pin 3 (-21V)
and pin 4 (+5V) of N102
(S0793) are
normal
Change display
screen VFD, DS100 and
check whether they
are OK.
Change N102 (S0793)
OK
N
Y
N
N
Y
Y
13. Troubleshooting process for no screen display is shown as the following figure :3.3.2.13
Figure Troubleshooting flow chart for no screen display 3.3.2.13
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