Ideology of the work of UPS:
1.When the network /even without battery/
Starts to work on the charger with Q2 .generates approximately 105-110B.
From this is powered by and starts to operate additional info source. The fan is spinning.
Turns on the display.
2.When you click 'Start' begins to operate the booster on the Q11-Q14, Q24, Q25,
From the battery voltage creates a voltage 380,- 380B. The average point neutral and ' -' battey/
Charged with15-С18./ not swollen?/
respectively, without battery UPS will not turn on.
3.Optocouplers are with the network frequency on transistors Q5, Q6 and Q7,
Q8 are fed bursts /50 Hz, it must obtain!/ RF pulses.
After throttle and capacitor /L2-L4 and C25/ is a sine wave.
4.Turn on relay RY1,
Through the fuse F1 network is supplied to the catwalk REC2/check,
Is not pierced whether !/ and Q15
they produce offering only -38of to charge capacitors.
4.1 The case check chain D29-D32, chip U12.
Check continuity between the feet 2-3 /should be 40-50k/ and 5-6 /2-5 MOhM/
5.If all OK,
OOPS goes on line
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1. What is the voltage at the battery / black socket accessory rear-5 has.
The top two' - ', the lower ' '/ There is at least 90 volts?
/Norm105-110/ 2.
When the voltage at the battery increases/i.e. Charger works/?
3. Remove the network and try to include UPS from the battery. Come on? The display on battery?
If turned on,
You can with the certainty that a chain is damaged power adjustment,
i.e. ,
Power elements : relief.F1, bridge REC2 , the transistor Q15 and
complex acoustical elements : diodes (D29-D32 - 1N4148,
A chip U12 -1C358, оптрон U13 - TLP250, the diode D35 -1N4148, resistor R117- 22om, R118 - 47om