(Manual operation is
excluded.)
(7) When turn on the
instrument, the test
light is bright but no
voltage display.
(1) Voltage in electric net is too
low results in power voltage too
low and power relay cannot work
normally.
Use AC Steady
pressure machine or
voltage regulator
(2) Power relay is broken.
(3) Voltage display board is
broken.
(4)High-voltage output terminal
is disconnected.
(5)High-voltage transformer is
broken.
Change the
high-voltage
transformer.
(6)Plug or connecting wire of
main circuit board is loose.
Secure the plug and
connect it well.
(8) Manual start or
reset is failed.
(9) Start and Reset are
failed in operation.
Start or Reset key is bad
connection or damaged.
(10) AC/DC output
voltage cannot be
adjusted and the
(1) Capacitor box is broken（D6、
C6、R3 and R4 are equipped in
one plastic box.）
transformer works with
noise.
(2)High-voltage transformer is
broken
（
there are striking fire and
have electric short phenomenon）
Chang high-voltage
transformer
(11) No voltage
indication when
adjusting voltage.
(1) Voltage regulator is broken.
(2)Linking plug of main circuit
board may have bad connection
or open phenomena.
Secure the plug and
connect it well.
(3) D8~D11diodes have some
broken or weak welding.
(12) Indicating value
and actual value
have
large error (half).
(1)D12~D15 diodes have some
broken.
(2) Leakage current displaying
board is broken.
Change current
displaying board.
(3)C7 and R11 Pressure sensitive
resistor are weak welded.
(1)220 /5W resistor is open or
weakly welded
(2) Leakage current displaying
board is broken.
Change current
displaying board.
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