Pioneer PDP-4280HD

PDP-4280HD
31
5
6
7
8
56
7
8
C
D
F
A
B
E
4.8 POWER SUPPLY BLOCK of 42 X, Y DRIVE and 42 SCAN A, B ASSYS
5.0V 5.0V
5.0V 6.5V 5.0V 6.5V
16.5V 16.5V
VSUS VSUS
VF1
VF
VF2
VPOFS
VF3
IC5V
VH
VXKOFS1
VXKOFS2
IC5V VH
5V
Re
g
.IC
IC5V
DC/DC Conv.
Scan
Logic
Scan IC
15V
DC/DC Conv.
HMSK
FET
Pre
drive
Logic
5V
Re
g.IC
DC/DC
Conv.
SUS-G
FET
Pre
drive
SUS-B
FET
Pre
drive
SUS-U
IGBT
Pre
drive
SUS-D
IGBT
Pre
drive
XPRST
FET
Pre
drive
XSOFT-D
FET
Pre
drive
XKOFS1
FET
Pre
drive
XKOFS2
FET
Pre
drive
VXKOFS1
Reg.
VXKOFS2
Reg.
Logic
SUS-G
FET
Pre
drive
SUS-B
FET
Pre
drive
SUS-U
IGBT
Pre
drive
SUS-D
IGBT
Pre
drive
LMSK
FET
Pre
drive
YPRST
FET
Pre
drive
SNOFS
FET
Pre
drive
YKOFS
1
FET
Pre
drive
YKOFS
2
FET
Pre
drive
YKOFS
3
FET
Pre
drive
YKOFS
4
FET
Pre
drive
RST-D
FET
Pre
drive
VYKOF
S12
Reg.
VYKOF
S3
Reg.
VYKOF
S4
Reg.
DC/DC Conv.
VSNOFS
Reg.
VYPRST
Reg.
SOFT-G
FET
Pre
drive
Note:
VYPRST, VSNOFS, VYKOFS12, VYKOFS3, VYKOFS4
and VXKOFS2 voltages are electrical volume controls.
to 42 ADDRESS ASSY
42 SCAN A, B ASSYS
42 Y DRIVE ASSY 42 X DRIVE ASSY
to 42 ADDRESS ASSY
from
POWER SUPPLY
from
POWER SUPPLY