Backup Battery Inspection - HTC KIWI Service Manual

5.6 Backup Battery Inspection

Description:
* HB backup battery is a chargeable part (it is different from old models).
* This SA will guide you how to judge backup battery.
A
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Step 1. Check remaining capacity
Turn on HB unit and check on backup battery
status.
There will be one of three results.
3.1.1 100% capacity
Go to Step 4
3.1.2 Less than 100% capacity
B
Go to step 2
C. Can't boot.
Go to step 2
Step 2. Charge batteries
Make sure the main battery is in the unit, and
then
plug in AC adapter for charging.
1. Normally It takes about 1 - 5 minutes for the
backup battery to reach to 100% capacity.
And then go to Step 3.
2. In case the returned unit is left unused for a
long time, the power may drain away and the
unit can't power on or backup battery bar is
all empty. As a result of B, the device should
be recharged for an 1 hour.
1. If battery display is 100%, go to step 3
2. If it is NG (backup battery can't be charged or 100%
capacity does not reach to 100% in 1 hour), the backup
battery has to be replaced.
1.
Replace the M/B if new backup battery still does not
work.
Step 3. Check backup battery function
1. Don't turn off the device. (Keep the unit power on
with the power management screen)
2.
Remove the AC adapter from the device.
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