LG Electronics 32LC2D(B), 37LC2D(B), 42LC2D(B) service manual No image

Models: 37LC2D(B) 42LC2D(B)

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Is the

YES

Is the input

NO Attach the input

 

 

 

Set ON?

 

cable attached?

cable(s)

 

 

 

 

 

 

 

 

 

NO

 

YES

 

 

 

 

 

 

Push the POWER

 

 

 

 

 

 

 

ON key

 

Check the

 

What is

 

 

Power Error

 

 

 

Condition of all

PASS

 

 

 

 

 

 

 

 

 

 

 

Connectors, wafers,

 

the input signal

 

 

 

 

 

 

I2C In the

 

mode?

 

 

FAIL

 

 

 

system.

 

 

 

 

 

 

 

 

 

 

 

Check CVBS

FAIL

Check 3.3V

 

 

 

 

 

AV1

Signal at R103

 

At L110 on jack

 

 

 

 

 

 

of jack board

 

board

 

 

 

 

 

 

PASS

 

PASS

- 18

 

 

 

 

 

 

 

Replace Jack board

-

 

PASS

Check 24bit

PASS

 

 

 

Check LVDS

Check Main_V

Check Sub_V

 

 

 

 

 

 

 

RGB at AR700-

 

 

 

 

Output of Cortez

 

 

At R309

At R302

 

 

PASS

 

AR705

 

 

 

 

 

 

 

 

 

 

Check for S/W error

FAIL

 

FAIL

 

FAIL

 

 

 

 

 

 

 

 

 

 

Replace Cortez

 

 

 

Check Q303

 

 

 

 

 

 

Check Power

 

PASS

 

 

 

 

 

 

Circuit and 9V

 

 

 

 

 

Levels and crystal

 

Replace CXA2069

 

 

 

 

 

at L300

 

 

 

 

PASS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace Hudson

FAIL

 

FAIL

Correct the circuit

 

 

 

 

 

 

 

Power Error

 

 

 

 

 

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LG Electronics 32LC2D(B), 37LC2D(B), 42LC2D(B) service manual No image