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Service Addendum26
Simplified Diagram of DSP Circuits
Figure 4-9. Simplified Power/Control/DSP Circuits
+
O
u
t
R
703
C
V
C
ontrol
Series Regulator
C
ontrol A
m
p
C
V
O
r
V
in
G
ate
CC
DAC
Gate
O
utput C
urrent
R
432
R
433
R
465
CC Or
C
C
C
ontrol
R
440
10K
10K
10K
R490
R
491
R
404
R
408
R
406
R
407
U
408A
Down
Programming
Amp
D
ow
n
Program
m
er
U
409A
P
.O
. H
ea
t S
ink
A
ssem
b
ly
Output Voltage
+ R
ail
D
411
D
4
13
G
D
S
U
201
U
202
Q206
Q205
- Rail
Q
202
Q201
U
401B
U
408B
Sch4350.Pre
U
605A
U
403A
4.64K
Monitor
M
onitor
I Mon
IMon
D
4
19
+ G
ross
+
5V
U
409B
C
urrent Lim
it
R
503
R
503
4.12K
14.7K
+ 15V
R
497
31.6K
DAC
Ref
+
S
- S
- Out
A/D
VMon
A/D
U752
U750
U753
U751
U736
U710
uP
P.O. DSP Board
CV
DAC
CV_Prog
+5V
CC_Prog
Data
U773
9K
9K
1
25K
125K
R
434
0
to -5V
0 to -5V
20K
900
900
0.02
R
435
20K
PLD
R
412
200
R
411
4.99K
R
410
464
R
463
2K
C
426
.047uF
U
401A
Fixed
SAS
Fixed
SA
S
R
488
4.99K
+5V
V
M
o
n
S
A
S
+
-
-
+
+
+
-
+
-
-
+
-
+
-
+