PART VI HOW TO REPLACE THE PARTS
6-8
ENGLISH
6.6 REPLACE THE MAIN CIRCUIT BOARD
When you prepare to change the main circuit board, you should proceed with the
following steps
- Stop the operation and unplug the power plug from the electrical outlet.
- Open the bottom plate.
- Discharge the unit high and low voltage contact terminals by creating a
short circuit. If not, an electrical shock may occur (See the below picture).
- Disconnect 9 wire connections to the main circuit board.
- Open the fuse socket on the back of the unit with a flathead screwdriver.
- Unscrew 4 screws on the main circuit board.
Phillips
screwdriver
1.Gently, unplug 9 connections- transformer, fan motor,
power cord, high voltage power supply, UV lamp, power
supply signal wire, speaker, negative ion generator and
display circuit board wire connections.
Transformer
Speaker
Power supply
signal wire
Power cord
High voltage
power supply
UV lamp
Fan motor
Negative ion
generator
Required tools
Create a short circuit between low
voltage terminal and ground terminal
with screwdriver.
Create a short circuit between high voltage terminal and a
screw on the bottom with screwdriver.
WARNING
To reduce risk of electric
shock, it is extremely
important to discharge the
high and low voltage contact
terminals before touching
them.
Lay down the unit
horizontally with unit
bottom led facing toward
you. Unscrew the 10
screws located on the
bottom of the unit with
Phillips screwdriver.
Display circuit
board data wire
Summary of Contents for R200T
Page 69: ...ENGLISH NOTES ...