I have a powerware 9110 ups it is 6000va and 240volts DC system suddenly it failed to work battery and the input AC power is intact. please suggest me what to do

SOURCE: Powerware 9120 DC Bus Fault Problem.

there is a 100uf/63v capacitor near the IRF630 fet. You need to replace this in order to fix this error. Along there is also a 2200uf/16v capacitor. It is a good idea to change the both at the same time.

SOURCE: COMPAQ V2000 WILL NOT POWER UP WITH DC/ADAPTER OR BATTERY

After you have verified that the solder is good around the DC Jack >>>>

Check MOSFET (Anachip 4407 or Fairchild 4435) near DC JACK
[replace the pair PNP/NPN]

Check MAXIM IC (MAX1999)

SOURCE: Powerware 9120 BUS Unbalanced error display

I've had this same issue what it boils down to is that the Power IN is not being distributed properly across the Power Outlets.

Step 1. unplug everything from the unit and power the ups down. If the alarm clears itself the UPS is mostly likely fine. if it doesn't not clear send it in for repair

Step 2. If step 1 cleared the alarm try distributing the decives across the outlets differently.

There are two inverters so two output if everything is plugged into one side (ie a power bar with 10 things plugged into it) and nothing on the other side this could cause the alarm.

hope this helps

SOURCE: 3000 VA UPS Service Manaul of Fiskars Power Systems Make

I have the same PCB on my Deltec PRR2200i. I at least know a few things about the circuit now. I had 11 transistors explode on mine and am replacing them now. Sadly I have not managed to track down a circuit diagram.

SOURCE: Hellow Dear, My acer aspire 4935

First, you need to make sure your power adapter is providing enough power to both run the laptop & charge the battery. A very good way to do this is to compare your laptop voltage & ampere requirements (written on a sticker on the bottom of the laptop) with the voltage & ampere ratings of the power adapter. Voltages should be the same, or the power adapter's voltage about up to 0.5 volts more than the laptop's voltage rating. Amperage of the power adapter should be at least equal to or greater than the laptop's rating. It should never be less than the laptop's rating, or else the power adapter will be providing insufficient amperes to charge the battery. Of course, the power adapter's nominal amperage might be ok, but it degraded on usage. You can verify this by testing using a good or new power adapter.
If the battery did not charge using the new power adapter, take the battery off the laptop, & using a dry tooth brush, scrub in between the fins of the battery connector on the motherboard & on the battery it self, then put the battery back into the laptop & try again.
If this still did not resolve the problem, then the battery itself could be bad. Try it on another laptop, or try a good or new battery in your laptop.
If this did not work, there might be a possibility that the charging circuitry on the laptop's motherboard is defective & needs servicing. In order to do this, the laptop needs to be disassembled & the motherboard checked for defective/burned out components in the area near the DC jack. Any defective/burned out components found should be replaced, or you might need to replace the laptop's motherboard altogether.