A SERVICE OF

logo

WHEN
TROUBLESHOOTING
THE POWER SUPPLY
USE AN
ISOLATION
TRANSFORMER
FRONT PANEL LED
c5v
1
AlWlDSl
@I
w3
+
W3
FL4FL4
LINELINE
LINE
SW I TCHSW I TCH
MODULEMODULE
AND CONNECT
A6TPlOl
TO
A6TP301
+15V
,;;.6v:
AlWl
@
PROBE POWER
WI
4
POWER SUPPLY
INDICATOR LEDS
42
:ONTROLLER
-12.6
Q
Q
w7
i28
CRT
-15
(4
A6AlW2
+15
Q
+5v
CRT DRIVER
GENERATORS
POWER SUPPLY
ASSEMBLY
;
-12.6
-b
t28
-B
110/220
i
-15
-m
VOLTAGE
f15
0
SE-L-E C
fiR
ON REAR PANEL)
;
+5
D
71
;_
-5
-15v
__I
;
:
+15v
-
:
:
+11ov-
;
;
HV SHUTDOWN
+--
j
;
(CSV
= HV ON)
;
:
:
:.
.
.
.
.
.
.
i
i
i HIGH VOLTAGE
j
: MODULE
: :
:
:
-2.45KV
:
:
;
I
-2.55KV
A6AlW3
A18Vl
CRT
sl133e
Figure 13-l. Simplified Section Block Diagram
13-2 Display/Power Supply Section