Sharp AQUOS LC-60C6400U Service Manual download pdf (Page 58)

LC-52/60/70LE640U,C6400U (1st Edition)

6 – 5

[3] TROUBLESHOOTING TABLE

• LED Backlight does not turn on.

If it is not an error of power supply/LED driver,

It is start-up in the lamp error disregard mode.

Do you start?

YES

When main unit is replaced, does it start normally?

YES NO

Replace main unit. en LCD control unit is replaced, does it start normally?

YES

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.

Do you start?

When power supply unit is replaced, does it start normally?

YES

Replace power supply unit.

When main unit is replaced, does it start normally?

YES

Replace main unit.

When LCD control unit is replaced, does it start normally?

YES

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.

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Sharp AQUOS LC-60C6400U Service Manual Page 58