NEC MobilePro 780 Portable Computer Users Guide

  
Troubleshooting  A-1 
 
Troubleshooting 
Your NEC MobilePro is designed to provide many hours 
of service while you are at home or on the road. 
For optimum performance, frequently back up and syn-
chronize the MobilePro data with your notebook or desk-
top computer. Then if something happens, most of your 
data is still available. If you have problems, check the in-
formation in the following table for possible solutions. 
Troubleshooting
 
PROBLEM RESOLUTION 
The MobilePro 
has no power. Check the...

  
Specifications B-1 
 
Specifications 
The following specifications are standard except where 
noted. 
Display 
8.1-inch, 640 x 240, 64K color, liquid crystal display 
(LCD), with backlight, touch screen 
CPU 
NEC VR4121, 168-MHz processor,  
optimized for Windows CE 
User Data Entry Methods 
!
78-key QWERTY keyboard with stylus 
!17.5 mm alpha key pitch 
!Touch screen (input via stylus) 
!Scroll (Jog) dial 
Random Access Memory (RAM) 
32 megabytes (MB); standard 
Read-Only Memory (ROM) 
24 megabytes...

   Battery Replacement 
A lithium battery in some computers maintains system configuration 
information. In the event that the battery fails to maintain system 
configuration information, NECC recommends that you replace the battery. 
For battery replacement information, call your local NECC dealer or the 
NECC Customer Assistance Center. 
!WARNING 
There is a danger of explosion if the battery is incorrectly replaced. 
Replace only with the same or equivalent type recommended by the 
manufacturer....

  
B-2 Specifications 
Infrared (IrDA) Communication 
!
Baud rate — FIR 4 Mbps maximum 
!Distance — 2 to 20 inches 
Serial Interface 
Baud rate — 115.2 Kbps maximum 
I/O Ports 
!
Serial port (Direct Cable connection) 
!IrDA port 
!VGA port (output) 
!Earphone Microphone 
!Modem port 
!Power port (DC in) 
Modem 
!
Data — V. 90, 56 Kbps (AT command) 
!Fax — 14.4 Kbps (Fax control command Class I) 
 Note: Download speed is limited to 53 Kbps. 
Upload speed is limited to 33.6 Kbps. Actual speeds 
may vary...

  
Specifications B-3 
Power 
!
AC Adapter 
 Input Voltage — 100 to 240 volts AC, 50 or 60 Hz 
 Output Voltage — 9.0 volts, 1,000mA max. 
!Main battery — one rechargeable Lithium-Ion (Li-Ion) 
battery pack (included). 
!Memory backup — approximately 7 days (with de-
pleted main battery) at ambient temperature of 73°F 
(23°C). 
 Note: The period for safe memory backup can 
vary with ambient temperature and other factors. Al-
ways make sure that your MobilePro is powered off 
before you store it. Always...

  
B-4 Specifications 
Accessories (ship with the system) 
!
AC adapter – S1424-21A Listed Direct Plug-In Power 
Unit 
 Input Voltage – 100 to 240V AC; 60Hz, 13W 
 Output Voltage – 9V DC 1000 mA 
!Rechargeable Lithium-Ion Battery Pack 
!PC Connect (serial) Cable 
!RJ-11 Telephone Cable 
!VGA Cable 
!Stylus 
Dimensions 
!
9.64 in. (w) x 5.2 in. (d) x 1.13 in. (h) 
!245 mm (w) x 132 mm (d) x 28.8 mm (h) 
Weight  
!
1.69 lb. (with battery) 
!770 g (with battery) 
Operating Environment 
!
Temperature — 32°...

  
Specifications B-5 
Available Options 
!
AC Adapter (S1424-21A) 
!AA Battery Adapter (MC-BA10) 
!PC Connect (serial) Cable (S1424-12S) 
!VGA Cable(S1424-12V) 
!Stylus Pack (S1424-17A) 
!Compact Carrying Case (S1424-30A-D) 
!Standard Carrying Case (S1424-30A) 
!Deluxe Carrying Case (290-01500-000) 
!Li-Ion Battery Pack (MC-BA9) 
!Earphone Microphone (MC-EM1) 
!High-Speed Printer Cable (MC-RC3E) 
!16 MB CompactFlash™ Storage Card 
(050-00054-000)  

  
A-2  Troubleshooting 
Nothing 
appears on the 
screen. (contd) Try recharging the main battery pack. 
 
Check that the ROM bay cover is properly 
secure. 
A low battery 
message 
appears. Recharge the main battery. 
W hen using a 
PC card, such 
as a modem, 
the unit powers 
off. Connect the AC adapter to the unit when 
using PC cards that require large amounts 
of energy. 
The AC adapter 
doesnt work. Make sure that the main battery is installed. 
 
Check that the AC adapter connections are 
secure....

  
Troubleshooting  A-3 
The PC card 
cannot be 
accessed. Make sure the card is inserted correctly and 
seated properly. 
 
Connect the unit to AC power using the 
adapter. Some cards do not operate 
properly unless the AC adapter is 
connected. 
The touch 
screen does not 
respond. Press Ctrl Alt =
 to calibrate the stylus input. 
Follow the on-screen instructions to 
complete the recalibration procedure. 
 
Reset the unit. 
The soft reset 
button does not 
respond. Remove the main battery. Reinstall...

  
5-2  Setting Up a Remote Connection 
PREPARING FOR CONNECTION SETUP 
Before you set up a dial-up connection for an internet ser-
vice provider (ISP) or remote access server (RAS), and the 
associated email properties, you need the following. 
!a modem (your NEC MobilePro is equipped with an 
internal data/fax modem). 
!an ISP or RAS account. 
!configuration information from your ISP or network 
administrator that may include some or all of 
the following: 
 the dial-up telephone number 
 TCP/IP...