Samsung RH29H9000SR Service Manual page 72

TROUBLESHOOTING
4-2-8. When the WiFi does not work properly
Start
Do you have the
wireless router?
YES
Is the power of wireless router
turned on?
YES
Dose the WIFI setting
properly?
YES
Is the input voltage of
①
main power conversion board
as 12V correctly?
YES
Is the output voltage of
②
main power conversion board
as 5V correctly?
YES
Are the main power board
and WIFI module connected
correctly?
YES
Change the WIFI module.
NO
Buy the wireless router
(Wireless router is not
included)
NO
Wireless router power on
NO
Progress the WIFI setting
again.
Be cautions about when enter
the password (a capital and
small letter, blank etc.)
NO
Is the six pins connector
connected to main power conversion
board correctly?
NO
Is the cable connected to main board
CN03 correctly?
Change the main power
conversion board
Change the main board.
NO
Connect the five pins.
72
Check the main power
☞
conversion board CN02
No.5(VCC), No. 4 (GND) pins.
(Normal range is: 11.4V ~12.6V)
Check the main power
☞
conversion board CN 03
connector No.3(VCC),
No.4(GND)pins.
(Normal range is : 4.75V ~ 5.25V)
NO
Connect the six pins
NO
Connect the cable.