Pioneer f-502 Service Manual page 47

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
converter
PDP434PU, PDP504PU, PRO434PU, PRO504PU, PDP435PU, PDP505PU, PRO435PU, PRO505PU
ADR_ PD
IC5214
IC5215
8
OR
9
0
-
OR
PD_ MUTE
3
4
5
6
7
= DCC_ PD
DC-DC
microcomputer
D1
S5201
IC5208
PD-MUTE
circuit
2 Flashes in a case of
power-down other
PS_ PD
than power-supply-r
elated power-down
IC5201
module
PD_ TRIGGER
47
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
P2
Relay control
Flashes in a case of
power-supply-related
Protection
power-down
circuit