150W Power Supply Model: HY-T150
working correctly.
VIII．Common Fault Detection and Ruled Out
Problem
Cause
Estimation
Solution
1.External wiring: AC and FG reverse Check if AC and FC Connected
correctly
connection
misplaced
according to Instruction
Trip after
power on
AC power on
but Fan of
power supply
does not work
AC power on
but no laser
emission
Laser emission
at all times
Current is
2. External wiring: short circuit between
AC and AC
3. Internal wiring: short circuit between
AC and AC or AC and FG
4.Other causes
1.Fan socket is loose.
2.Fan damaged
3.Fuse is burned.
1.Control wire connected wrong
2. Internal connector is loose.
3.Protection switch on but on water
through or water through switch is
broken.
4.Wrong output laser signal
5. Power control signal is 0.
6.Fuse is burned.
7.Others
1.When “TL” control laser: short circuit
between”TL ”and “G”.
2. Circuit is broken.
3. Switch of manual test laser emission is
broken.
4. Other causes.
1.AC voltage is too low
2.Power supply and laser Device is not
connected very well
3. Power control signal from CNC card
is not connected very well with “IN”.
Use multimeter to check
if short circuit between
AC and AC.
Laser emission
manual test.
Laser emission
manual test.
when
when
No laser emission when
manual test.
Check if wire is
connected
correctly
according to Operation
Instruction
Open outside case and
check
Voltage>0.5V between
“WP”and”G”
Voltage between”TH ”
and “G” should<3V
when When laser-open
controlled by high level
Voltage between"TL"
and “G” should>3V
when
laser-open
controlled by low level.
Voltage between “IN”and
“G” is 0.
Fan does not work
Voltage between”TL ”
and “G” =0
Output current is always
at 5mA around.
Output current is always
at 10mA around.
Rewiring, and avoid short
circuit
Send back factory for
maintenance
Open enclosure and tighten
socket.
Change fan or send back
factory for maintenance
Contact with us for repair.
Rewiring correctly
Tighten connector.
Water through or change
water through switch.
Replace CNC card or change
GND.
Increase voltage between
“IN”and “G”.
Send back factory for
maintenance
Send back factory for
maintenance
disconnected
between”TL ”and “G”.
Send back factory for
maintenance
Change switch of manual
test laser emission.
Send back factory for
maintenance
Use AC voltage regulator.
Send back factory for
maintenance
Re-connected
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