Troubleshooting Table (Lc-52/60/70Le640U/C6400U,Lc-80Le633U) - Sharp C6400U Service Manual

LC-52/60/70LE640U/C6400U,LC-80LE633U/844U (1st Edition)

[3] TROUBLESHOOTING TABLE (LC-52/60/70LE640U/C6400U,LC-80LE633U)

• LED Backlight does not turn on.
When main unit is replaced, does it start normally?
YES
Replace main unit.
When power supply unit is replaced, does it start normally?
Replace power supply unit.
When main unit is replaced, does it start normally?
Replace main unit.
When LCD control unit is replaced, does it start normally?
Replace LCD control unit.
If it is not an error of power supply/LED driver,
It is start-up in the lamp error disregard mode.
en LCD control unit is replaced, does it start normally?
Replace LCD control unit.
When the parts in the panel can be replaced. →Replace all LED-bars in the panel module.
When the parts in the panel cannot be replaced. →Replace panel module.
If it is not an error of power supply/LED driver,
It is start-up in the lamp error disregard mode.
YES
YES
YES
When the parts in the panel can be replaced. →Replace all LED-bars in the panel module.
When the parts in the panel cannot be replaced. →Replace panel module.
Do you start?
YES
YES
Do you start?
NO
NO
NO
NO
6 – 4
NO
NO