3. Disconnect the standby battery connector from the
system board and measure the voltage at the
connector of the standby battery as shown.
1
2
(Red)
(Black)
If the voltage is correct, perform the failing operation
with a fully-charged standby battery to isolate the
problem.
If the voltage is not correct, continue.
4. Measure the output voltage at the connector on the
system board.
(Top View)
(-)
(+)
If the voltage is higher than measured in Step 3, the
standby battery is discharged or is defective.
If the voltage is the same as measured in Step 3 or
less than
+
3.0 V dc, replace the standby battery. If
the problem remains, replace the system board.
Testing the Quick Charger:
If a noise can be
heard from the operating quick charger, replace it.
1. Perform steps 6 through 8 on page 30 of the “Testing
the Rechargeable Battery” to verify the rechargeable
battery for correct operation.
2. Plug the quick charger into an electrical outlet.
If the amber power indicator does not turn on, replace
the quick charger.
3. Install the rechargeable battery.
If the green charging indicator is not blinking, replace
the quick charger.
Pin
Voltage (V dc)
1
+
3.0 to
+
4.5
2
Ground
Model L40 SX (8543)
31
