2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting
Procedure 3 Connection Check
The wiring diagram related to the power supply is shown below:
C
adapter
Battery pack
Power code
10-pin
<BT board>
<S
stem board>
CN9691
CN9690
CN8811
CN8020
CN8810
DC-IN jack
Battery signal harness
Battery power
harness
Any of the connectors may be disconnected. Perform Check 1.
Check 1 Make sure the AC adapter and the AC power cord are firmly plugged into the DC
IN jack and wall outlet. If these cables are connected firmly, go to Check 2.
Check 2 Replace the AC adapter and the AC power cord with new ones.
• If the DC IN icon does not light, go to Procedure 5.
• If the battery icon does not light, go to Check 3.
Check 3 Make sure the battery pack is installed in the computer correctly. If the battery is
properly installed and the battery icon still does not light, go to Procedure 4.
Procedure 4 Charging Check
Check if the power supply controller charges the battery pack properly. Perform the following
procedures:
Check 1 Make sure the AC adapter is firmly plugged into the DC IN jack.
Check 2 Make sure the battery pack is properly installed. If it is properly installed, go to
Check 3.
Check 3 The battery pack may be completely discharged. Wait a few minutes to charge the
battery pack while connecting the battery pack and the AC adapter. If the battery
pack is still not charged, go to Check 4.
Check 4 The battery’s temperature is too high or low. Leave the battery for a while to adjust
it in the right temperature. If the battery pack is still not charged, go to Check 5.
Check 5 Replace the battery pack with a new one. If the battery pack is still not charged, go
to Procedure 5.
QOSMIO G20 Maintenance Manual (960-511) [CONFIDENTIAL] 2-15
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