Pioneer PDP-434PU - Power-Down Signal System Diagnosis

PDP-434PU
58
1234
1234
C
D
F
A
B
E
• Block diagram of the power-down signal system
S5201
A
(
(
A
IC5214 IC5215
OR
OR
AD1 AD1
D9 -D12
D5 -D8
X1
Y1
D14 D13
D1
SCAN_PD
YDRIVE_PD
YDD_CNV_PD
YSUS_PD
SCAN_5V_PD
XDRIVE_PD
XDD_CNV_PD
XSUS_PD
ADR_PD
DCC_PD
PD_MUTE
PS_PD
PD_TRIGGER
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
Note: The figures 1 - = indicate the number of times the LED flashes on the panel when power-down occurs in the corresponding route.
IC5208
PD-MUTE
circuit
DC-DC
converter
IC5201
module
microcomputer
Flashes in a case of power-down other than power-supply-r elated power-down
Relay control
Protection
circuit
Flashes in a case of power-supply-related power-down