42
(Manual operation is
excluded.)
(3) Timer4060 is broken.
Change 4060
(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.
Change relay
(3) Voltage display board is
broken.
Change it.
(4)High-voltage output terminal
is disconnected.
Welded it well
(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.
(1) No12V voltage
Check power section
(2)556 is broken.
Change 556
(9) Start and Reset are
failed in operation.
Start or Reset key is bad
connection or damaged.
Change relevant
switch
(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.
)
Change capacitor
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.
Change voltage
regulator.
(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.
Change relevant diode
(12) Indicating value
and actual value
have
large error (half).
(1)D12~D15 diodes have some
broken.
Change relevant diode
(2) Leakage current displaying
board is broken.
Change
current
displaying board.
(3)C7 and R11 Pressure sensitive
resistor are weak welded.
Weld it well
(
13
)
No voltage
display
(1)220 /5W resistor is open or
weakly welded
Weld the component
well
。
(2) Leakage current displaying
board is broken.
Change current
displaying board.
(3) 324 is broken.
Change 324.
Содержание CS2670A
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