LG 42LH20 Series, Руководство по обслуживанию

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February 2009 42LH20
30
Power Supply Connector P201 Voltage and Diode Check Power Supply Connector P201 Voltage and Diode Check
Diode Mode values taken with all Connectors Removed
0.886V 4.98V 0V PWR-ON 2
Gnd Gnd Gnd Gnd 4
Gnd Gnd Gnd Gnd 6
1.67V 5.14V 5.14V 5V 8
1.67V 5.14V 5.14V 5V 10
Gnd Gnd Gnd Gnd 12
0.96V 12.3V 0V 12V 14
Gnd Gnd Gnd Gnd 16
0.71V 21.4V 0V 24V 18
1.6V 3.8V 0V INV.ON 20
Open 0V 0V Err Out 22
1.68V 3.2V 0V
2
PDIM 24
Diode
Check
Run STBY Label Pin
P201 Even "SMPS" to P700 "Main PWB"
nc nc nc nc 1
Gnd Gnd Gnd Gnd 3
Gnd Gnd Gnd Gnd 5
1.67V 5.14V 5.14V 5V 7
1.67V 5.14V 5.14V 5V 9
Gnd Gnd Gnd Gnd 11
0.96V 12.3V 0V 12V 13
Gnd Gnd Gnd Gnd 15
0.71V 21.4V 0V 24V 17
nc nc nc nc 19
Open 1.66V 0V
1
A.DIM 21
nc nc nc nc 23
Diode
Check
Run STBY Label Pin
P201 Odd "SMPS" to P700 "Main PWB"
1
ADIM Pin 21 Fixed and not used
2
PDIM Pin 24 can vary according to type of signal
being processed and the OSD Backlight setting.
0.6V 0% to 3.3V 100%. Output from the BCM chip.