Checking Main Pcb Dc Voltage In Case Of Power On - LG Multi V5 Service Manual

Please refer to the Safety Precautions on pages 4-7 for more detail to prevent injury or death regarding the operation and service
WARNING
troubleshooting of the Multi V product.
Checking Main PCB DC Voltage
Figure 81: Checking Main PCB DC Voltage (SMPS Voltage).
5V
GND2
Table 91: Main PCB DC Voltage (SMPS Voltage) Measurements.
Multi-Meter
Check Mode
Black
5V
Main Ext. GND2
12V
DC
5V
Comm. GND3
12V
WARNING
Use caution when measuring the voltage; GND is separated. There is risk of electric shock, and physical injury or death.
CHECKING MAIN PCB DC VOLTAGE
12.0V
Vdc
5.0V
Vdc
12.0V
Vdc
5.0V
Vdc
Measured Value
Red Normal Abnormal
5V 4.5V~5.5V
12V 11.5V~12.5V
5V 4.5V~5.5V
12V 11.5V~12.5V
Due to our policy of continuous product innovation, some specifications may change without notification.
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IN CASE OF POWER ON
Main
Ext.
Comm
Main
Ext.
1 2 3 4 5 6
GND1 5V
Figure 82: Multi-Meter (Note the
Probe Color).
Red
Black
211