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a OTHERS
Symptom
Probable Cause
Correction
1. Stabilized voltage at
QV cannot be obtain-
ed.
. Degradation
of
transistors
and
zener
diodes.
. Check voltage at each pin.
. Fan is out of order.
. Motor is out of order.
. Disconnection of cables and contact fail-
ure of the connector.
. Check conductivity of the fan con-
nector in the final unit.
. Check conductivity.
= PS-515
Symptom
Probable Cause
Correction
. High voltage of 900
volts is not obtained.
. High voitage diodes, D101 ~ 104, S-1.5-08
are damaged.
. Electrolytic
capacitors
C7
and
C8
are
defective (leak or short-circuit).
. Check conductivity.
. Check
conductivity
and
terminal
voltage at the capacitor.
. Stabilized voltage of
150V is not stable,
or setting at 150V is
not possible.
. Degradation
of V201
6BM8
and
N201
NE-2.
. Check
voltage
at each
electrode.
Ascertainment by replacement.
. Neon bulb on the
front panel does
not light.
. Disconnection
of lead
wires
with
in a
neon tube.
. Replacement.
17
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