Main Drive And 50 X Sub Drive Assys - Pioneer PDP-507CMX Service Manual

5
4.13 50 X MAIN DRIVE and 50 X SUB DRIVE ASSYS
X 8
+60V
VSUS +16.5V
VF
15V
DC/DC
+16.5V
CONV.
+16.5 +5V
X 1
RESONANCE
Drive Signal
BLOCK
LOGIC
DK MOD.
BLOCK
Drive Signal (IC1104)
+16.5V
+5V +60V
X 3
* VOFS DC/DC converter and VPRST regulator are controled
by electric volume.
VOFS DC/DC converter and VRN DC/DC converter are generated
from 16.5 v, but they do not operate when Vsus is under 100V.
5
6
+16.5V +5V VSUS
MASK
BLOCK
X 7
+5V
+6.5V
REGULATOR
+16.5V +5V VSUS
X 2
Drive Signal
MASK
BLOCK
PSUS
–RESET
BLOCK
VRN
DC/DC
VRN
CONV.
+16.5V +5V VSUS
MASK
BLOCK
50X SUB DRIVE ASSY
50X MAIN DRIVE ASSY
PDP-507CMX
6
7
50X SUB DRIVE ASSY
PSU
50X MAIN DRIVE ASSY
X 6
PSUS
PSUS
Pre
SUS-G
drive
FET
Pre
SUS-B
drive
FET
SUS- Pre
drive
MSK
FET
Logic
DK Pre
Mod. drive
Pre
SUS-G
drive
FET
Pre
SUS-B
drive
FET
SUS- Pre
drive
MSK
FET
Reset
7
8
to 50 Address Assy
5.0V
6.5V from P Suply
5V
5.0V
Reg.IC
16.5V
VSUS
VRN
VOFS
DC/DC Conv.
VF2
15V
VF1
DC/DC Conv.
8
A
B
C
D
E
F
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