User Guide

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Flow Chart of Troubleshooting and Circuit Diagrams

10-18

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10-1-7.

Speaker Part

Speaker dose not work

Check the R220

High"

Check the ZD601, ZD602

Is Speaker O.K?

END

Resolder R220

Change the L401

Change U401

Change the LCD module

Check the LCD

module connection

Check the R426,R427

PWM Wave"

YES

Reassemble LCD Module