Sub Address Aand B Assys - Pioneer PDP-503CMX Service Manual

5

3.1.7 SUB ADDRESS Aand B ASSYS

+60V
ADRGND
CN8801
H : V MID CLAMP OFF
L : V MID CLAMP ON
V MID SW
ADRK EMG1
+12V
DGND
ADR-B
ADR-U
ADR-D
ADRK. PD
CN8802
SW
ADR-D
ADR-U
ADR-B
+12V
DGND
VADR
ADRGND
ADROUT
CN8803
H : EMG1 OFF
L : EMG1 ON
5
6
Current - Voltage
Convert Block
R8801 - R8805
P.D. Output Block
Q8803, Q8831
BUFF Block
IC8801
(DC+AC) (-AC)
(DC)
Additional
Block
IC8802
PDP-503CMX
6
7
Over Current DET. Block
ADR Output
Resistance Load Block
ADR EMG 1 Block
Inversion
+5V REG
Block
IC8801
Conparator
CLK
Flip / Flop
(EMG : ON)
IC8802
Conparator CLR
(EMG : OFF)
IC8804
7
8
A
B
Q8801
Q8805, Q8806
12V
C
D8804
5V
D
IC8803
E
F
39
8