Service manual

1. General Information Of This Document
1.1 Getting start
This is a service manual for Vista 1/2/3K(s), Tower UPS, intend to help service personal perform a
maintenance and repair service.
If you want to know:
? What is special for this UPS from service point of view; please refer to section characteristic
of the product.
? Construction of the product; how many pieces of PCB do the product make up, please refer
to construction of the product
? Functional block of the UPS, and operating principle thereof, please refer to Principle of
Operation.
? What’s wrong with the UPS and How to solve the problem, please refer to Trouble Shooting.
? Basic information about the product, install and operation instruction, you may please
refer to USER MANUAL
1.2 Conventions
This service manual uses the following conventions to alert you some important information for
safe operation and quick working.
STOP
Warning: Denotes a procedure or operation, which, if not perform correctly, may result in
personal injury. Be sure not to continue operation until indicated conditions are fully
understood and met.
!
Caution: Denotes a procedure or operation, which, if not perform correctly, may cause
damage to the UPS. Be sure not to continue operation until indicated conditions are
fully understood and met.
Information and Tips: There are some tips and skills after this symbol. During service
operations, these skills may help you quickly finish your work.
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