LCD DV 42LH90
81
February 2010
Main Board Connector P600 to Speakers Voltage and Diode Check
Main Board Connector P600 to Speakers Voltage and Diode Check
Diode Mode values taken with all Connectors Removed
P400 CONNECTOR "Main" to "Speakers"
SPK-L(+)
SPK-L(-)
SPK-R(+)
SPK-R(-)
LABEL
2.63V12V0V4
2.63V12V0V3
2.63V12V0V2
2.63V12V0V1
Diode CheckRunSBYPin
Use speaker out to test for defective Audio Amp IC600
Note: (Normal, ½ Audio B+)
P600
Q600
Back of
board
Audio B+
24V
Pins 49-52
Mute
Pin 25
Q400 (Mute) Active Low. Normal 3.3V Collector to Pin 25
IC600
Mute
Driver
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