PART IV
TROUBLESHOOTING - CHECK LIGHT FLASHING
E-32
When the unit is turned on, the CHECK indicator light flashes and you may hear warning beep sound.
When you open the unit bottom plate you will see the twin red check wires between power supply and main circuit board.
The main circuit board is always detecting the voltage on this check wires when the unit is turned on.
If the voltage on the check wire is less than 1V DC, the CHECK indicator light on the control panel flashes with warning
beeping sound. Therefore, when the unit CHECK light flashes, you need to find the problems which cause the check wire
voltage less than 1V.
CHECK LIGHT FLASHING
Cell OK
Power supply OK
If the cell is wet, dry it completely
or repair the problem cell.
Check power supply
Check electronic cell
Check power supply
transformer
Check main circuit board
If the power supply is broken,
replace it.
If the power supply transformer is
broken, replace it.
If the main circuit board is broken,
replace it and send back to the
manufacturer.
Some of these steps expose dangerous
high voltage. Only qualified service
technician should attempt this procedure.
WARNING
Repair tips:
1. Check electronic cell
2. Check power supply
3. Check power supply transformer
4 Check main circuit board
The red check wire is connecting the power
supply and the main circuit board. If the main
circuit board detects the voltage on the check
wire less than 1V, it will light up the CHECK
indicator light on the control panel.
Check wire connection
on the power supply.
Check wire connection on
the main circuit board.
ENGLISH
Step 1
Step 2
Step 3
Step 4
TROUBLESHOOTING CHART
