On PSU board
Vcc (5V), Vs(89V),
Va(65V) exists ?
N
Y
Connect CN23 (X-SUS), CN32 (Y-SUS),
and Turn on PDP
N
Y
(3)
N
On PSU board
Va (65V) exist?
Turn off AC power and remove ADMs from
following connectors CN01, CN02, CN03, CN04
ABUSC (D) board is defective.
Panel or X-SUS board or
Y-SUS board is defective.
In case that Vs Power system or Va Power system of
X-SUS or Y-SUS is defective, Vcc starts but goes down
in a few seconds.
Turn off AC power
Connect SDR U /D (with CN34 and CN35)
Turn on PDP
Turn off AC power.
Connect CN 26 (X-SUS).
Turn on Power
Turn off AC power.
Connect CN 06(ABUSB).
Turn on Power.
N
Y
(4)
Turn off AC power, End of analysis
N
On PSU board
Va (65V) exists ?
Y
Turn off AC power.
And remove ADMs from CN01, CN02, CN03,
and CN04. After that turn on PDP
N
Y
ABUSB board is defective.
Turn off AC power.
Connect CN 06(ABUSB).
Turn on Power.
Turn Off AC power and disconnect YFPC from
CN812, CN822, CN823, CN831, CN832, CN833,
and Turn on AC power
YFPC or Panel is defective
Panel Defective
SDR U or D board is
defective
On PSU board
Vcc (5V), Vs (89V),
Va (65V) exists ?
On PSU board
Vcc(5V), Vs (89V)
exists ?
On PSU board
Va(65V) exists ?
ADM is defective
(Panel is defective.)
On PSU board
Va (65V) exists ?
Y
40
TROUBLESHOOTING THE 50AF1 PANEL
N
Y
ADM is defective
(Panel is defective.)
Afterwards, turn on Power (Vsago)
A
N
A
L
Y
S
I
S
O
P
E
R
A
T
I
O
N
