- Attention point for repair
Since G6 Audio IC is BLT type of Power IC as same as G4 and G5 Audio IC,
both of spe
a
ker outputs ( plus and minus ) always have about 7 V DC.
Therefore do not short between spe
a
ker minus and GND like the following figure.
Otherwise Power IC or a measuring equipment may have damege.
CH1
CH2
+
-
GND
LA4625
Example of error measurement
( GND and SP OUT " - " are shorted onto measuring instrument. )
- Assumed Power Down and Shut Dowon caused by AUDIO Assy
C
able
becomes disconnected
( A2<-> D3) or IIC communication
error including VOL IC defective.
Cable becomes disconneced
( A1<-> P5 ) or working DC
detection
circuit at SP output.
Short circuit between Power line (16.5 V ) - GND
Short circuit between Power line (16.5 V ) - GND
( During normal operation )
Short circuit between power line (+3.3V_D)- GND
( During normal operation )
Short circuit between power line (+3.3V_D)- GND
NOTE:
The above number of PD and SD are not always the reasons in the above list
Measuring
point
Number of PD / SD
Main reason of PD or SD
( In case of power on operation during the problem has occurred )
SD (Blue 2 times )
SD (Blue 5 times )
PD (Red 2 times )
PD (Red 4 times )
PD ( Red 13 times)
( In case of power on operation during the problem has occurred )
SD ( Blue 3 times )
Both of SP OUT+ and -
have about 7V
37