Service Modes, Error Codes, and Fault Finding
EN 20
FHP PDP
5.
Figure 5-10 Vs check on the Y-Sus and X-Sus board, and SDM / XBB (1/2)
5
PSU board
Vs 80V exists?
Switch off
Disconnect SDM / Y-Sus board
Measure resistance of SDM power line
Between A1-A2, B1-B2, C1-C2 and D1-D2
SDM Power line is
shorted?
SDM is faulty
Panel chassis is defective
Switch on
PSU board Vs / Vcc
is output?
Switch off
Switch off
End of analysis
N
Y
6
N
N
Y
PSU Board Va block is defective
Switch off
End of analysis
Y
Vs Check on Y-Sus & X-Sus board and SDM / XBB
SDM is faulty
Panel chassis is defective
Remark:
There is no start up of Vs switched and Va if power supply to
X-Sus (CN23) or Y-Sus (CN33) board is disconnected
E_14580_014.eps
101005
ADM1
ADM2
ADM3
ADM4
ADM5
ADM6
ADM7
ADM8
A2
A1
B1
B2
C1
C2
D1
D2