Block Diagram Of The Power-Down Signal; Diagnosis Of Pd (Power-Down) - Pioneer PDP-5020FD Service Manual

1

5.3 DIAGNOSIS OF PD (POWER-DOWN)

A

[1] BLOCK DIAGRAM OF THE POWER-DOWN SIGNAL

B
Output
signal
15VDD
C
VXKOFS1
VXKOFS2
Resonance center
electric potential
SCAN connector
D
disconnection
detection (upper)
SCAN connector
disconnection
detection (lower)
SCAN ASSY
VNOFS
E
VKOFS1_2
VKOFS3
VKOFS4
Resonance center
electric potential
F
72
1
2
Under voltage
detection
Under voltage
detection
Under voltage
detection
Over or under
voltage detection
OR
IC5V
VH
Under voltage
detection
15VDD
VPRST
Over or under
voltage detection
PDP-5020FD
2
3
ADDRESS ASSY
(x8)
PD detecdtion
OR
DCDC Convertor
Stop
Over or under
voltage detection
Over or under
voltage detection
Under voltage
detection
Under voltage
detection
3
4
D13
to
AD1
D20
X DRIVE
ASSY
X1 D22
Y DRIVE
ASSY
Y1 D21
OR
4