�
•
•
N OTE
When using the troubleshooting tree, set the 652A controls as follows,
unless stated otherwise for a particular step:
FREQUENCY RANGE
.
.
.
.
.
.
. . . . . . . . .
.
. . . .
.
. . .
.
. . . . . . . XI K
FREQUENCY Dial . . . . . .
.
. . .
.
. . . . . . . . . . . .
. .
. .
.
. .
.
. .
.
.
5
OUTPUT ATTENUATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.0V
OUTPUT MONITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NORMAL
OUTPUT AMPLITUDE and VERNIER controls . . . . . Adjust for an
ReVIS
voltmeter indication of 3V
(use test setup shown in Figure
5-2)
A tolerance of +/- 1 0% should be allowed for
all
voltages given in the
troubleshooting tree, unless stated otherwise. Refer to Paragraph 5-52
at each step of the tree.
OUTPUT UNO:$TORTED AND WITHIN
SPEC1FICATIONS AT 90TH OUTPUT TERMINALS
fALSE
2
CHECK FI AND ENSURE
55 is IN THE CORRECT POSITION
3
READ NOTE :;
OF PARAGRAPH 5 - 5 2
I
FAlSE
TRUE
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"""
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'
'--
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__
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� � � � � � �
I
4
+3CV ±O.9V AT AI P I N I
I
i6V
p-p
-25V ±O.75V AT AI PIN
2:
AT A2 P I N 20
"'"
''"'
'"'
'
""'
+
7
5
1 2
I
1 3
3ev RMS ,,5% A T A I PINS :; S 5
CHECK POWER SUPPLY
CHECK
CHECK
35V RMS f 5 % AT A1 PINS 6 S 7
CONNECTIONS TO
POWER
I
OUTPUT
FALSE
r�UE
EX
���
N
� �
R
�
T
-=-
�
L
AMPLiF
���
J
ATTNUATDR
r
�
l
�
�
10
8
9
I
6
CHECK TI AND
CHECK
CHECK
CHECK
E
6%�-b��
TNE
fs
s
t���
y
S
V
���
y
I
OS
i
,'
�Z
u
�i
OR
I
L � � � � � � � � _ � � � � � � � �
L
_ _ _
�
'5�A-!,""aa
NORMAL MONITOR CIRCIJIT
r -- �
- -
-,. �- - - - -
- -
fALSE
1 6
CHECK �2 R 4 1
A N D A2 C2S*
r
15
5.8V AC
AT AI P I N 14
O.
COLLE(
FALSE
+
18
CHECK Al aS, A I 09
AND RECTIF!ER
L _ _ __ _ _ _ _ _ _ _ _ _
_
