Service Flow Chart - Hisense AS-09UR4SVNVG1 Service Manual

7 T R O U B
7 T R O U B

7-2. Service flow chart

Switch on the power
supply
Does DLED screen
display normally?
No
Is the fuse(F01,
3.15A/250V) blown?
No
Are the wires poorly
connected?
No
Check the first and secondary
voltage.
The first voltage:220V
The secondary voltage:
*C15:12V
CN4(1,2terminal):5V
No
After replacing the
display board, Is there
still trouble?
No
Indoor control board is faulty.
Replace it.
L E S H O O T I N G
L E S H O O T I N G
Yes
Yes
Yes
Check all wires are
connected correctly
Replace
Yes
the
control
board
Yes
Display board
trouble
Does it receive the
Yes
remote controller
signal?
No
Is the remote
controller in good
condition
Yes
After replacing
the display
board.
Yes
Replace the
indoor board.
Is there still
trouble?
Yes
Is indoor control
board short
circuit?
Yes
Replace the indoor
Start up self-test
function
Check the result
No
Replace the battery press
ACL button.
Retry remote operation.
No
Display board
problem
No
Check operation
Check and find
short circuit or open
No
circuit among other
components such
as transformer or
fan motor