CHECK AND TEST 1
Step 1
Unscrew cover of mainboard with a cross-head screwdriver.
Step 2
Check if terminal is inserted to final position in PCB area.
Step 3
Check if wire order for +
LED is right or not in PCB area.
Right picture shows the
correct condition.
Step 4
Check if wire order
is correct, or if terminal
is filled with foam.
Use tweezers to pick foam out and insert the terminal into its position again.
DIAGNOSIS 1
GENERAL PROCEDURES FOR RECONNECTING INTERNAL WIRES.
Step 1
Cut wire off.
Step 2
Peel off the sleeves.
Step 3
Check to ensure proper wire order and reconnect them.
Step 4
Tin soldering.
Step 5
Cover connecting point with electrical tape.
CHECK AND TEST 2
Step 1
Power on the appliance, open fridge door, check if LED light is on or not.
Step 2
Press down the mechanical switch, check if LED light is off or not.
DIAGNOSIS 2
PROCEDURE 1
CASE 1:
LED LIGHT WITHOUT
CONTROL BOARD
Step 1
Prize off the cover with 2mm slotted driver.
Step 2
Unscrew with 6mm Philips screwdriver.
Step 3
Pull down the lamp box.
Step 4
Disconnect the terminal.
Step 5
Loosen the clips and take off the LED lamp.
CASE 2:
LED LIGHT WITH INTERNAL
CONTROLLER
Step 1
Use slotted driver to prize off cover from back.
Step 2
Unscrew with 6mm Cross-head screwdriver.
Step 3
Pull down the lamp box.
Step 4
Disconnect the terminals for LED and for control board.
Step 5
Loosen the clips and take off the LED lamp.
CHECK AND TEST 3
Step 1
Provide DC12V to LED on the top to check if it is on or not.
DIAGNOSIS 3
CHECK AND TEST 4
Step 1
Set multimeter to resistance gear.
Step 2
Check wire connection from PCB area to LED area.
CASE 1:
LED LIGHT WITHOUT
CONTROL BOARD
CASE 2:
LED LIGHT WITH INTERNAL
CONTROLLER
DIAGNOSIS 4
