SERVICE MANUAL
5KVA-220V/230V
21
V201703A
Drivers
Parts
Attribute
Reference values
Failure status
R144/R48/R140/R137
Resistor
47 ohm
Open or other values
Optocoupler: U12/U2/U4/U1/U3
U12
U2
U4
U1
U3
Pin1
Parts
Attribute
Reference values
Failure status
U1/U2/U3/U4/U12
Resistor
PIN8 TO PIN5: 0.922M
PIN7 TO PIN5: 0.953M
Short or explosion