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Section
VI
Table 6-7
Table
6-?.
Troubleshooting
"Tree".
Read
Paragraphs 6-24 through
6-37.
Set
Controls as follows:
IvIODE
.
OUTPUT
.
SENSITTVITY
TIME
BASE
FI]NCTION.
INT
STD FREQ
1 MHz
CHECK
.1ps
MANUAL
START
Circled
numbers
indicate corresponding waveforms
and
the location of test points
on
the
circuit
diagrams.
Observe Gate
Light
OFF
.
Begin
at
2
below
ON
.
Begin
at
3
page 6-11
Replace A22;
Check
Gate
Light Amplifier
Figure
?-19
Check Gate
Light
Ckt
(DS1,
R2, Rg,
R4)
Check
A23Q9,
Ql0
and
Holdoff
MVB
423 Q11,
Ql2
Figure
7-20)
Replace A23
on
Extender;
Check
Collector
A23Q3
*
+12V
Figure
7-20
Check Sample
Rate
MVB
A23Q3,
Q4, Q6
Not
Counting
OFF
Check Gate
Flip-Flop
A22Q4,Q5
and
42ZQ6
0V
to
+8V
FLASHING
Check Power
A7
Supply
Switch
to
MAI.I START;
Remove
A23,
Observe
Gate
Light
Switch
to
Frequency,
I
ps,
Observe
Gate
Figure
Check
contacts
ASSIA
(F12
&
2) and
A3R2
Figure
7-5
Model 5245L
6-10
02349-1
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