CHECK AND TEST 1
Step 1
Check in PCB area.
Unscrew cover of mainboard with a cross-head screwdriver.
Step 2
In mainboard area, check
if terminal is pushed into
final position.
Step 3
The terminal is not
pushed into final
position: insert again
to make sure that
connections are good.
Check if terminal is filled with foam.
Step 4
If terminal is filled with
foam: use tweezers to
pick foam out and insert
the terminal into position
again.
DIAGNOSIS 1
CHECK AND TEST 2
Step 1
Turn power output of transformer to DC 12V..
Step 2
Supply power from terminal in PCB area.
DIAGNOSIS 2
PROCEDURE 1
Step 1
Remove freezer shelf.
Step 2
Lever 2 screw covers off.
Step 3
Unscrew 2 screws.
Step 4
Remove air duct:
a. Hold the decorative cover of air duct;
b. Pull air duct out;
c. Disconnect the terminal of fan motor;
d. Take air duct away.
DIAGNOSIS 3
PROCEDURE 2
Step 1
Cut wire off from broken
area.
Step 2
Peel off the sleeves.
Step 3
Check to ensure proper wire order and connect them.
Step 4
Tin soldering.
Step 5
Cover connection with electrical tape.
Step 6
Set output of transformer
to DC 12V to test fan
from the terminal behind
freezer air duct.
DIAGNOSIS 3
Note
The air duct is a component with higher requirement for sealing. To disassemble
it to change a fan can cause
ice problems. If reworking technicians is not trained
well by Homa, please just change the air duct with fan directly.
CHECK AND TEST 3
Step 1
Check if the terminal is
filled with foam.
If so, use tweezers to remove foam.
Step 2
Check if wire order in foam is right or not:
a. Set multimeter to resistance gear;
b. Put detector into one end of wires in PCB area.
c. Put another detector into end of wires behind air duct.
DIAGNOSIS 4
DIAGNOSIS 5
DIAGNOSIS 6
PROCEDURE 3
Tip 1
When reinstalling air duct, move wires out of the way to prevent crushing by air duct.
Tip 2
After pushing air duct back into position, you should hear a clicking sound. If there is no click, please repeat again.
Tip 3
Check to see if there is a wide gap between air duct and cabinet.
If gap is large, re-install air duct.
Tip 4
In freezer air duct area, check if terminal C is pushed into final position.Redo it.
