SERVICE MANUAL
5KVA-220V/230V
11
V201703A
3.1.1. Drivers (This part is only used for repair checking)
Note:
Drivers usually need to be checked when users want to repair the boards. Because when power
devices were damaged, the high voltage will rush to driver circuit through the gates of power devices.
The reference of the resistors list as below:
R41/R59/R70/R76/R80/R78/R75/R42/R52/R62/R81/R64/R93/R92/R87/R53
TVS1/ TVS2/ TVS3/ TVS4/ TVS6/ TVS7/ TVS8/ TVS10/ TVS11/ TVS12/ TVS14/ TVS15/ TVS16
Use multimeter to measure each resistor, find the burnt resistors and replace them; don’t need to replace
them all.
Parts
Attribute
Reference values
Failure status
All: 22ohm
Resistor
22 ohm
Open or other values
TVS1-16
Diode
+ To - : 0.42V
Short or explosion
If the resistors need to be replaced, please also check the driver transistors and control IC.
