Pioneer f-502 Service Manual page 56

Power Down (Blinking in Red)
DIGITAL VIDEO ASSY
D5 - D8
ADDRESS ASSY
(upper)
AD1
D9 -D12
ADDRESS ASSY
(lower)
AD1
D14
XDRIVE_ PD
X DRIVE ASSY
XDD_ CNV_ PD
X1
XSUS_ PD
D13
SCAN_ PD
Y DRIVE ASSY
SCAN_ 5V_ PD
YDRIVE_ PD
Y1
YDD_ CNV_ PD
YSUS_ PD
@
ADR_ PD
IC5214
IC5215
8
OR
CONVERTER
9
0
-
OR
PD_ MUTE
3
4
5
6
7
IC5201
IC5401
module
IC4
microcomputer
PDP434CMX, PDP504CMX, PDP505CMX
=
DC-DC
DCC_PD
OR
S5201
IC5208
PD-MUTE
circuit
2
Flashes in a case of power-down
PS_ PD
other than power-supply-related
power-down (Red- LED: D5201)
PD_ TRIGGER
56
Note:
The figures 1 - @ indicate the number of times the
LED flashes on the panel when power-down occurs in
the corresponding route.
POWER SUPPLY UNIT
D1
P2
Relay control
PD
Flashes in a case of
power-supply-related
Protection
power-down (Red-
circuit
LED)