User Guide

Flow Chart of Troubleshooting and Circuit Diagrams 5-11
5-6 Speaker Part
Speaker does not work
Yes
U400 pin 2, 3 = short Resolder U400
U400 pin 2, 3, 6 = 1.25 V ?
No
No
Replace the PBA
Yes
Yes
Modify the SPK pins
Check
the tension of the Speaker
Is Speaker working? Replace the Speaker
END
No
Yes
Yes
No