PDP-505PE
61
5
6
7
8
5
6
7
8
C
D
F
A
B
E
S
5201
A
( (
A
IC
5214
IC
5215
OR
OR
IC5401
IC4
DC-DC
CONVERTER
OR
AD
1
AD
1
D5
- D8
D9
-D12
X1
Y1
D1
4
D1
3
D1
SC
A
N
_PD
YDR
IV
E
_PD
YDD_
CN
V
_PD
YS
US
_PD
SC
A
N
_5V
_PD
XD
R
IV
E
_PD
X
DD_
CN
V
_PD
XSU
S
_PD
AD
R
_PD
PD
_MU
T
E
PS
_PD
PD
DCC_PD
PD
_TR
IGGER
P2
8
0
9
-
3
4
5
6
7
=
~
2
ADDRESS ASSY
(upper)
DIGITAL VIDEO ASSY
ADDRESS ASSY
(lower)
X DRIVE ASSY
Y DRIVE ASSY
POWER SUPPLY UNIT
IC5208
PD-MUTE
circuit
• Block diagram of the power-down signal system
Note:
The figures
1
-
=
indicate the number of times the
LED flashes on the panel when power-down occurs in
the corresponding route.
Relay control
Protection
circuit
IC5201
module
microcomputer
Flashes in a case of power-down
other than power-supply-related
power-down (Red LED:D5201)
Flashes in a case of
power-supply-related
power-down
(Orange LED: D158)