Hitachi P50S601/DW3F, Руководство по обслуживанию

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On Y-SUS board
CN32 (1)-(4) pins or
CN32 (6)-(4) pins or
CN32 (8)-(10) pins or
CN32 (10)-(13) pins
shorted?
Y
Remove SDR from CN34
and CN35 on YSUS
Y
Y-SUS board is
defective.
N
Switching circuit (power
supply) has a short-circuit.
N
End of analysis
(2)
Y
N
Y
N
X-SUS board
is defective.
YSUS
CN32
4
3
2
5
NC
GND
NC
Vs
NC
1
Vs
13
12
11
10
9
8
7
6
[YSUS - XSUS]
Vcc
NC
Vx
-Vs
-Vs
NC
GND
Remove XBUS-U XBUS-D
Y
On X-BUS board
CN63 (1)-(9)
shorted?
(1)
SDR is defective.
On CN801 on SDRU,
or CN811 on SDRD,
check for short circuit in following pins?
(2)-(6), (20)-(24),
(28)-(30), (46)-(50)
On X-BUS board
CN63 (1)-(9)
shorted.
Remove the six XFPCs
(Disconnect CN61, CN62, CN63, CN64,
CN65 and CN66)
On X-BUS board
CN63 (1)-(9)
are shorted.
N
XBUS board is
defective.
Panel chassis
is defective
38
TROUBLESHOOTING THE 50AF1 PANEL
XFPCs (Ribbon connectos to Panel)
A
N
A
L
Y
S
I
S
O
P
E
R
A
T
I
O
N