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SERVICE MANUAL Vista 1K(S) / 2K(S) / 3K(S) / Tower Centralion

3.2.2 1KS Super Charger Fig. 3.2.2.1 1KS super charger 3.2.3 2K Fig. 3.2.3.1 2KS PSDR / CNTL I/P EMI 11

3.2.4 3K Fig. 3.2.4.1 3KS PSDR / CNTL I/P EMI Fig. 3.2.4.2 2/3KS Internal Battery 12

3.2.5 2/3KS super charger Fig. 3.2.5.1 2/3KS Super Charger 13

4.COMPONENTS LOCATION Below Figures shows location of the main components / modules in the UPS: Fig.4.1 1K PSDR MODULE LOCATION Fig.4.2 2K/3K PSDR M

No. Module Name Part No. Quantity Remark 1. Charger Module 710-61201 1 1053 710-61200 1 1073/1083 2. Fan Driver 710-61000 1 1053(S)

5. PRINCIPLE OF OPERATION 5.1 Functional Block of The Product As a true online UPS, the product employ a double conversion topology, comprise followin

The DC/AC module, call also inverter, belongs to the output stage of the UPS, used to converse the DC power from the DC-BUS into clean, stable AC outp

5.2 Operating Principle Of The Major Functional Block 5.2.1 AC/DC converter (PFC) The purpose of AC/DC converter is to generate a stable bipolar DC B

DC-BUS capacitor can be controlled, therefore the voltage of the DC BUS can be controlled, at the same time the waveform of the current can also be co

The MOSFETs turn on /off in turn, can prevent the saturation of the transformer and damage of the circuit. Like the AC/DC converter, the DC/DC conve

CONTENT 1. GENERAL INFORMATION OF THIS DOCUMENT... 5 1.1 GETTING START ...

the output of the switching leg filtered by a LC filter to get clean and stable sine wave the output voltage. 5.2.4 Global Controller The Global Contr

5.2.5 Standard Charger and Super Charger The utility of charger is to recharge and to maintain the batteries at fully charged condition. The charger

in the long backup time model UPS. Photos of super charger can be found in Fig. 3.2.2.1 & Fig. 3.2.5.1. 41.2V CHARGER MODULE 110V CHARGER

5.2.7 User Interface 5.2.7.1 Front Panel The front panel consists 2 parts: push button and LCD indicator. The push button is used to turn on and of

5.2.8 Ventilation and Chassis Ventilation system of the UPS consist of air flow guiding insulation paper and fans, The ventilation system keeps the te

5.3 PCBs of the UPS This UPS system contains two major PCB assemblies. They are including: 1.PSDR: Contains major converter of the UPS (1) PFC con

5.4 Interconnection Of The PCBs The simplified schematics in and Fig.5.4.1 shows how the major circuits are connected and illustrates the overall sys

6. TROUBLE SHOOTING Despite of careful design and strict tests, in case UPS become out of order. Basically, designer suggest following service procedu

19 BUS fault 05 Keep Buzzing 1. Don’t let the UPS carry half-wave load, negative power load. Low PF inductive/capacitive load. 2. Don’t connect the

Possible Cause 3: DC/DC circuit fails. Solution: Refer to DC/DC circuit failure analysis. Possible Cause 3: Bus voltage feedback circuit problem. So

6.3.1 Quick Start... 34 6.3.2 P.F.C Co

6. 2 Trouble Shooting Procedures 6.2.1 How To Start Trouble shooting start point selection beginIs there any Trouble informationCan the product power

6.2.2 Find Out The Problem Quickly 6.3 Failure Diagnosis In this section, some debug skills are listed to help you finding the failure components and

For the reason of safety, please follow safety instruction to begin your work STOPHigh Voltage Danger: Some components contain residue charge and rema

6.3.1 Quick Start Before any detail check of UPS, please check the components listed in the following table. This action could help you find proble

6.3.2 P.F.C Converter Analysis: In this section, some components you could check to see if failure occurs to P.F.C Converter. General speaking, OPEN

!BE SURE TO use fuse with same spec as original ones to replace failure ones, otherwise, unpredictable danger could happen. If all components listed

6.3.6 SPS Module Analysis Item Checked components Instrument function Reference Value Failed condition1 Q201 (S, D) Diode Voltage Droop 0.42V S

6.3.8 Super charger Item Checked components Instrument function Reference Value Failed condition1 1k: F501 2K/3K F801 Ω 0 Open 2 1k: REC 501 (~ +

or a whole driver module directly. 6.3.10 others In previous sections, we pay attention to the components on PSDR/Charger, in this section, we are tr

debug the corresponding circuit. If unfortunately, both modes are incorrect, two possible circuits should be check: Bus feedback loop (on PSDR) and au

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 per

TEST ITEM TEST POINT TEST AND ADJUSTMENT SEQUENCE EXPECTED RESULTCharger Voltage BAT (+) BAT (-) 1. Disconnect BAT (+) and BAT (-) wires from pins

Appendix I. DC Offset Measurement Fixture RC CTo DVMFrom O/PSocketR=100Kohm/2WC=10uF/250V Fig.A.I.1 DC Offset Measurement Fixture 42

1.3 Important Safety Instructions STOP 1. For qualified service personnel only. 2. DO NOT performs any internal service or adjustment of this produc

(2k/3k) upper lead with a 300Ω/10W resistor to discharge +BUS capacitor TO DISCHARGE the energy of charger capacitor, after disconnect the battery fro

2. Characteristic of the Product For all UPS of this series, they are carefully designed and strictly tested. We always do our best to make our produc

3. Construction Of The Product 3.1 Open The Outside Cover To open the outside cover, please follow steps and figures below: STEP 1: Remove all the sc

3.2 Inside The Chassis STOPWarning: Before any further operation of service, touch any parts inside the chassis. Please make sure all power supply is