Pioneer f-502 Service Manual page 68

DIGITAL VIDEO ASSY
D5-D8
ADDRESS ASSY
(upper)
AD1
D9-D12
ADDRESS ASSY
(lower)
AD1
D14
X DRIVE ASSY
X1
D13
Y DRIVE ASSY
Y1
PDP4350SX & PDP5050SX
Power Down (Blinking in Red)
8
IC5214
IC5215
ADR_PD
OR
9
OR
XDRIVE_PD
10
XDD_CNV_PD
11
XSUS_PD
PD_MUTE
3
SCAN_PD
4
SCAN_5V_PD
5
YDRIVE_PD
6
YDD_CNV_PD
7
YSUS_PD
13
IC5401
IC4
Microcomputer
MAIN BOARD ASSY
M2
1
IC7207
MAIN UCOM
PD_MAIN
12
DC-DC
CONVERTER
DCC_PD
OR
S5201
IC5208
PD-MUTE
circuit
Flashes in a case of power-down
2
other than power-supply-related
power-down
PS_PD
IC5201
Module
PD_TRIGGER
AV BOARD ASSY MR POWER SUPPLY UNIT
AV2 AV5 P2
OR
68
Note:
The figures 1 - ~ indicate the number of times the
Red-LED flashes when power-down occurs in the
corresponding route.
PANEL POWER SUPPLY UNIT
D1 P2
Relay control
PD
Flashes in a case of
power-supply-related
Protection
power-down
circuit
+6.5V
UV_DET
+12V
UV_DET