Table of Contents
Advertisement
5-6 Speaker Part
Check for the clock signal at R304
5-10
Speaker does not work
Yes
U300 pin 4, 6 = 3 V ?
Yes
U300 pin 5 = "H" ?
Yes
Yes
U303 pin 17, 18 = 1.8 V ?
Yes
CN201 pin 14, 20 = 1.8 V ?
Yes
Check
the depression of
the SPK pins
Yes
Is Speaker working?
Yes
END
No
Ckeck U101 and related circuit
No
Replace the PBA
No
Check the clock generation circuit
(related to U500 and Q500)
No
Resolder U303
No
Resolder CN201
No
Modify the SPK pins
No
Change the Speaker
Flow chart of Troubleshooting and Circuit Diagram
Advertisement
Table of Contents
