Lind Electronics DC Power AdapterModel
# IB2020-154
Automotive DC adapter.$89.95 list.
Housed in indestructible extruded aluminum cases & sealed for durability!
All Lind adapters have built in noise & spike protection!
Use in Car, RV, Boat or any 12VDC source!
3 year warranty includes repair of damaged or broken plugs or cables!
AC ADAPTER:
The AC adapter is an AC to DC converter which supplies
the necessary power to the computer. The AC adapter also charges the battery
pack when it is installed in the computer.
o Input rating: 100-240 V AC, 2.0A, 50/60Hz
o Output rating:
- +20 V DC 2.0 A
- +20 V DC 2.5 A (Expansion Cartridge
attachment)
- Battery Pack: 10.8 V DC, 1450mAH/cell,
18 cell/pack
o Operating temperature 5 -- 35 (degs) C (41 -- 95 (degs)
F).
NIMH BATTERY PACK:
The two fusible links are Klixon 4-S F5J 4MM75A
The central item is a PTC resistor (I think)
o PC Cards that do not support the power management function
may cause the shorter battery operation hours.
FUNCTION
MONOCHROME COLOR
Power off/Suspend charging
1.4 hours 1.4
hours
Charging during operation
1.5 hours 1.5
hours
Quick charging
1.4 hours 1.4
hours
Suspend Life (Full) (*)
48 hours
36 hours
Suspend Life (Partial) (*)
6.0 hours 6.0
hours
Battery Operation Hours (**)
4.0 - 8.0 hours 2.4 - 4.8 hours
(*) Full battery.
(**) Power management and application dependent.
The ThinkPad 700 and 720C systems
also support a suspend/resume function when the PCMCIA card is installed.
For example, when you are operating with the communication application
with PCMCIA cards, after suspend/resume you do not need to restart the
operating system and communication application.
NIMH BATTERY PACK WITH POWER STATUS INDICATORS:
This has five power status LED indicators and one push
button located on the front bezel of a battery pack. These LEDs show
how much battery power remains when the button is pushed. In full-charged
state, all five LEDs are lit. One LED means about 20% of battery
power. The battery operation hours and charging times are the same
as the standard NiMH battery pack.
QUICK CHARGER:
The quick charger has two slots to charge two battery packs
simultaneously. Charging begins on the first battery pack installed,
then after it is completely charged, the other installed battery pack is
charged. A REFRESH BUTTON is provided for each battery pack slot
to DISCHARGE the battery packs before charging them. There are identifiers
and indicators that tell the charging
status for each battery pack installed.
Power Systems Checkout
Note: One or all of the batteries
can discharge if there is a short circuit in the system.
1. Replace the failing FRU if the power supply problem is caused by
a short circuit.
2. Determine if one (or all) of the batteries have become discharged.
Replace any discharged battery with its spare, if available.
How to test:
AC Adapter
Car Battery Adapter (700 only)
Battery Pack
Backup Battery
Standby Battery
Quick Charger
Voltage Converter (700, 700C)
Voltage Converter (720, 720C)
Checking the AC Adapter: (25W or 40W)
If the Power-On indicator does not turn-on, check the
power cord of the AC adapter for correct continuity and installation.
1. If any noise can be heard from AC adapter when it is plugged into
ac power outlet, replace AC adapter. If no noise can be heard from AC adapter,
go to step 3.
2. If a noise is still heard from new AC adapter, suspect the computer.
Replace AC adapter with the original one, then go to the next step. If
no noise is heard from new AC adapter, the original AC adapter is defective.
3. Unplug the AC adapter cable from the computer and measure the output
voltage at the plug of the AC adapter cable.
Pin
|
Voltage (V dc)
|
1
|
+19.0 to +21.0
|
2
|
Ground
|
o If the voltage is not correct, go to
the next step.
4. Unplug AC adapter cable from ac power outlet and wait for a few
minutes.
5. Plug AC adapter cable into ac power outlet.
6. Measure output voltage of AC adapter.
If the voltage is still not correct, replace
the AC adapter.
If voltage is correct, plug AC adapter cable
into computer and try the failing operation again.
If the problem goes away, suspect the continuity
or installation of the AC adapter cable.
If the problem is not corrected, replace the
voltage converter.
Checking
the Car Battery Adapter (700 only):
If the output voltage from the cigarette lighter socket
of the car is less than 10.5 V dc, the power-on indicator on the car battery
adapter blinks and a noise can be heard continuously.
1. Unplug the car battery adapter cable from the connector, if connected.
2. Plug the car battery adapter into the cigarette lighter socket.
Note:
If the adapter is already plugged in, be sure to unplug the adapter from
the cigarette lighter socket, then plug it back in.
3. Measure the output voltage of the car battery adapter cable.
Pin
|
Voltage (V dc)
|
1
|
+19.0 to +21.0
|
2
|
Ground
|
o If the voltage is correct and the power-on
indicator on the car battery adapter is on all the
time, the car battery is working correctly. Replace the voltage converter.
If the problem is
not resolved when the voltage converter is replaced, go to Checking
the Voltage Converter
(700, 700C) or "Checking the Voltage Converter (720, 720C)"
o If the voltage is outside the normal voltage
range, do one of the following:
- Try the above test procedures using a different
car, if one is available.
- Replace car battery adapter if computer
works with AC adapter but not car battery adapter.
Note: If output voltage from
cigarette lighter socket of car is less than 10.5 V dc, the car battery
adapter's power-on indicator blinks and a continuous noise is heard. Service
the car battery .
The IBM Car Battery Adapter can be used
on the ThinkPad 720C:
- Charge the battery whih system unit
turned off
- Use system with battery
removed before plugging in car adapter and turning system
on.
Checking the Battery
Pack
NIMH BATTERY PACK WITH POWER STATUS INDICATORS: A rechargeable
battery pack with five power status LED indicators and one push button
located on the front bezel of a battery pack. These five LEDs show
how much the battery power remains when the user is pushing the button.
In full-charged state, all five LEDs are lit. One LED means about
20% of battery power. The battery operation hours and charging times
are the same as those of the standard NiMH battery pack.
1. Carefully place the computer bottom-side up.
2. Remove battery pack and measure voltage between battery terminals
1 (+) and 3 (N).
Pin
|
Voltage (V dc)
|
1
|
+10.0 to +18.0
|
2
|
Thermal Detection
|
3
|
Ground
|
o If voltage is less than +10.0 V dc, the battery
pack has been discharged or is defective.
o If the voltage is more than +10.0 V dc, go
to the next step.
3. Using an ohm meter, measure the resistance between battery terminals
2 (T) and 3 (N). The
resistance must be 4 to 30 kilohms.
o If the resistance is not correct, replace
the battery pack.
o If the resistance is correct, go to the next
step.
4. Install battery pack and plug AC adapter cable into computer to
charge battery pack.
o If the battery power status indicator
is blinking (orange) and battery charging indicator is on,
replace the battery pack. If the battery is charging nVfHd< |