5-9 Trouble shooting Chart
MP3 Link does not work
MP3 Link does
not work
Go
No
Refer to Main Board XP9
Yes
Check Main Board C361, C352, R352,
R458
No
Yes
Replace U18 74HC4052
Check Main Board power supply
circuit.
No
Yes
Refer to Power Board CON501
No
Yes
Check signal at XP15 PIN16:MP3_R
PIN14:MP3_L ON front board whether normal
or not
Check Main Board U18 74HC4052 PIN2,
PIN15 L/R signal input right or not
Check U18 74HC4052 whether broken
or not
Check voltage at U18 PIN16 (6V), check
12V on Main Board whether normal or not
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