Motorola R-2001A Service Manual page 94

JT BOOST AC
4-6
17-19
VI
CR21 , 22, 54, 55
1-3
14-16
11 , 12,
23-25
17
6, 9
5, 10
4-11
Pl-7
P1-3
'"I
MAIN AC
AC RECTIFIER
I
AND
I
FILTER
'": DC INPUT
I
DC RELAY
Kl, U 7
,
AND
h
CONTROL
t
CAl, 01
-.. AC SENSE
AC SENSE
,
RECTIFIER
P 2 PWR OFF
014-16, 18
I
-..I
PWR STOBY
POWER
'I
SUPPLY
I
PWR ON
CONTROL
f--
CENTER TAP L.V.
XFORMER
,
'"
H.V. CONTROL LINE
,
.
~
.....
'
--
~--
I
BOOST
BATIERY
l
1
RECTIFIER
CHARGER
I
CONTROL
I
017
r
FREO
l
STO
I
CONTROL
I
023-25
-112VOLT
l
REGULATOR
J
05, 6, 8
DC BUS
PULSE
l
r---=1
WIDTH
,,,OOULATOR
I
1
HIGH
lo7. 29
VOLT
--l
HIGH / LOW
,I
CONTROL
I
VOLT
~
SHUT DOWN
m
020, 22, 281
.... l
E WIDTH
CONTROL
...
...
U5
I
CHOPPER
GEN~
Sl
AND
I
DRIVER
OVERTEMP
l
A
SHUTDOWN~-
09-1 2
rl
CHOPPER
h
T2
~
)-
T4
li
~
OVER CURRENT
-
I
CURRENT
t-
OET
SH-
l
XFORMER
-:!:-
CURRENT
-
---'
h
LIMIT
U3
I
J
I
u•~•
1 ' - ' ' ' " "
'
BATI VOLT"
DC LEO
'
AC LEO
'
FREO. STO OVEN
SUPPLY
'
•12V TO HV SUPPLY "
CENTER TAP HY XFORMER
'
04 DRIVE
'
06 DRIVE
+35V"
•13V'
'
LOW VOLT
RECTIFIER -12V
AND
-5.2V'
FILTER
+5.2V
CR17-20
'
CR26-35
•115V
'
-115V
'
P1 -10
P1 -13
?2-2
P2-1
P1 -8
P1-2
Pl-7
Pl-4
Pl-5
Pl-1
P1-5.6
Pl-2
P1-4
Pl -3
Pl-7
Pl-8
VOLTAGE COMP
·vvoLTI
ADJ .
VREF +7 .9V
Pl-1
8521-29
Figure
7-1.
Low Voltage f>ower Supply A1
Block Diagram
, 7-3 ,7-4