Maintenance Service And Trouble Shooting - Haier HTVF20R72 Service Manual

9. Maintenance Service and Trouble Shooting

1 TROUBLESHOOTING PROCESS
Check VD504, C507,
Normal
Check to see
if , 9v,
5v is normal
Normal
Check
N701,N101
No light and sound
Check to see if
Fuse3 is normal
Normal
V513, etc.
Normal
Check to see if the
collector voltage of
VD554 is 18V
Abnormal
Check the control
voltage of V552 or
CPU power
Abnormal
The failure of
horizontal unit or
N101
Maintenance Service and Trouble Shooting
Abnormal
Check to see 103V
etc. voltage is normal
Abnormal
T est to see all terminal
Resistance of load
Is normal
Normal
Check to see if
Check switch
rectifying tube
power unit
Normal
Change
rectifying tube
Abnormal
is normal
Abnormal
Check the
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