SECTION 5
TROUBLE SHOOTING
5.1
GENERAL
If a
malfunction
is related
to
either Source A and/or Source
Band
the trouble shooter cannot
identify
readily the
output
that
causes the problem,
it
is suggested:
a)
Ascertain
that
the tracking
switch
is in the OFF position;
b)
Disable Source B by removing
F201
fuse on p.c. board and check Source A for proper
operation.
c)
Reinstall
F201.
Disable Source A by removing
F101
fuse on p.c. board and check
Source B for proper operation.
If neither
b),
nor
c),
indicate which Source is
malfunctioning,
there is a
possibility
that
the
problem
might
be caused by
th~
common overvoltage protection. Remove CR110, CR210,
CR211. If problem disappears, replace.
Since
this
equipment uses a quad operational
amplifier
to perform
multiple
functions, it
would be advantageous
to
try as a first step, changing
of
the
amplifier
on the
malfunctioning
output
to
see
if
the problem disappears. If so, there may not be any need for equipment
recalibration.
5.2 NO
DC
OUTPUT VOLTAGE ON ANY SOURCE
If POWER lamp
DSI
does not
light
check fuse
F1
and
Switch
S1.
If
F1
blows repeatedly,
check for defective transformer
T1
or components as follows:
Source A
Source B
Source C
C101, C109, CR101, CR106-CR109
C201,
C209, CR201, CR206-CR209
C301,
C313-C315, CR301, CR307
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