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Model 1331A
~
0.1
SEC/
DIV
1V/
DIV
0
0.
1
SEC/DIV
10V/
DIV
I
I
I
I
I
---------~
-ov
->--
~
0.
1
SEC/DIV
1V/DIV
~~~~-~~r
-
,_
-ov
·~
-ov
l--+-+--+--+--+--+--+-+-.+--1-
'
0V
0
~
'
_L
_ , _ ,,___,___._
..____,
0.2
SEC/
DIV
1V/
DIV
~
0.2 SEC/DIV
10V/
DIV
1ii
0.2
SEC/DIV
10V
/
DIV
~
I
I
I
I
~
I
I
I
+s5v
1--t--t--t--t--t--t--t--t--t--+-
ov
iii
0.
2
SEC/
DIV
5V
/
DIV
~
TEST CONDITIONS
1.
Set
Model
1331A:
0.2
sEc1p1v
10V/
DIV1
INTENSITY .
..
..
............
.
.
.
.
..
..
..
.
In
ccw
WRITE
..............
.
..............
.
..
1
...
.
PERSISTENCE
.....
.
...
.
.....
..
.
.
....
.. .
ccw
entered
shorted
POSITION
(HORIZ and
VERT)
.
.
.
..
.
INPUT
(X,Y, and
Z)
.
.
...........
.
..
.
.
.
2. Set
monitor oscilloscope
as indicated
unl:ler
each
waveform.
3.
Press
and
quickly release
ERASE.
Service
I/
I
I
~
~
r
I
I
I
I
-ov
111
!IA
111
1
111-ov
I
I
I
-
._;
"-..!
-o
v
I
-ov
I
0
0.2
SEC/
DIV
1V/DIV
1:
0.2 SEC/
DIV
2V/
DIV
0
0.2
SEC/
DIV
5V
/
DIV
0
0.
2
SEC/
DI
J
5V
/
DIV
0
0.2 S
EC/
DIV
5V
/
DIV
~MA
IN
ASSY
~---------
-
- -
-
- - -
-
- - - - - -
Note
Rt42
--~
r--+1+-...,--...,--------'l'-----<,_'.
4
~
75
;:0>_
-
-.50V
Rl38
R128
22
-.50V
...
w
I
C3:
-50V
F
l
.02UF
All points where voltage
or waveform
not indi-
cated, same
as for write mode.
JUNCLT67~
-~
R139
1331(
VR5
t4.7V
- .50.F
FLOOD
I
Rt49
GU
N
22K
GRID
R18C
~
ADJ
~Blt;QI
3
Rl27
2.
1
1
+
.50V
-
y•
1
+
.50VF
I
I
I
~g;U
F
Rl
2
9
=
2.7
+1
.5 81/
-
~
+
1.58VF
6® -~D
A6Pt
I
6
@-~2
J4
I
6
@
-
~ ~------kc
I
I
6
@-
-<'
RIOO
A6PI
l
coz.~I ~~o~
1000
;:~BK
6
@
-
-<t4/J4
UF=
I
+.50V
F
INV
ERTER
03'
I
6
tie"
-
.!!l.( (
MOOE
INPUT
~
I
II
A6PI
I,.
NC
-<13
+12.6V
RllO
IOK
PULSE
GENERATOR
Q31-Q34
-
+12
.
sv
R103
1200
R104
1
00
C28
33
C26
470
RIH
IOOK
Rll3
IOOK
CR33
Rt0.5
18K
+t
2
.
6
V
RI
06
IOK
-
.50VF
.50K
C39
~
=
I
.02UF
I
0
~
l.j947l{ ; \
3
Rt30
J'-
\.V
.,_ _ _ _ _ _ _ _ _ _ _ .,.._..,
•O"K
_ _ _ _ _ _ _
*°'
CR
4
1
+12.6Y
I
+
12
.
sv
t
Rt43
I
RIOS~
•OK
STORAGE
~
(-;\
3
GATE
I
r--0
FLOOD GUN
GATE
036
WRITE
GATE
037
t
Rt15
tOOK
+t2.6V
+50VF
I
CR51
R144
2720
C38
1300
CR46
R146
100K
+12.
sv
-
-..J\,I.,
1
;,
I(
I
141
I
·
-
-
+
12
.
sv
OR34
C30
1200
I
Rl
4
.5
2000
Rt19
I
!OK
I
1
4
'
IC
'
h
t
-
+
12
.
6V
Rl
l6
IOK
+12
.6
V
I
CR4.5
FLOODGUN
SWITCH
0
4
5 -047
DEFLECTOR
SWITCH
057-
059
CR57
-.50VF
I
+l
.58VF
-
+ .50VF
~---. . ,
1~®
3
t
Rl48
21
.
5K
-50V
F
I
+
50V
+
12
.
6V
TO
Rl38
TO
CR44
ERASE TIMING
CR38,CR39,
Rt23,
C35
I
I
Rt23
4
7K
ERASE
SWITCH
6
@
-~
·
(
ERASE 1NPur
l
;;.,._
I
~b~o
'
I
I
I
N
•
I
I
Rl21
l
'.J (
+ 158
V-
----0
I
J•
NC-<IO
~
Rl26
>OK
I
+
12
.6
V
A6P1
I
J
4
6
@ - < · t - r -
- +
50V
6
@-<f--J
I
'
I
' - -
..
20K
CR
37
-50V
r
uLs£cK
TS-1243A
- -
PARTS ON
TH
IS SC
HEMATIC
A5
C24-42
,45,4
6
CR33-52,55-57
Kl
J
~~t-51,57,59
R99-132,134-t49,151-
159,
t6t
-
168
,
185-191
VR
4-7
~------~
DELETED:
Rl67
-
1
.
. . . .
I
-50VF
Rt58
tOOK
I
+
I0 8VF
- ·
Rt55
t50K
CR47
A3Pt
/.'?
t
I
I
I
)10
).-@
3
CR48
~ ~~
6
Rl57
!OK
.•
I
BLANKING
GATE
O·
t
+50VF
J4
1
AJ:DI
+50VF
+
5 0
VF
II>-- NC
R65
048
*
+
50VF
I
>OOK
CO
LLIMATOR
D
I
VER
:,;i1iF
COLLI
MATOR
050,00I
+
8VF
I
~
(916)
®3
".l~~
1.
AOJ
~-
~
~
r-
8
~
I
Rl66
47K
-
+
SOV
F
_J
llJ
1331A-8
-
1
Figure
8-22.
Erase Function Troubleshooting Guide
8-23
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