NEC Barracuda, Service Manual

Page: 97 / 179

Barracuda PDA Maintenance
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7.5.3 Enter D.M. ( Enter the Self Diagnostic )
This system has two kinds of boot:
1.Cold boot.
2.Warm boot.( “Scroll down the jog wheel and hold” + press “reset” ) to go into warm boot of the Diagnostic Manager system.
In warm boot, system will prompt user to reset to enter Pocket PC OS and backup data before upgrading Flash in cold boot mode
as below. All data in RAM will not be destroyed in warm boot, but we can’t do image upgrade and main RAM test.
Unplug the AC adapter and wait for about 5 minutes, or remove the battery and turn off the power switch then power on.Plug in the
AC adapter. Make sure not get into Pocket PC OS, or you can’t get into cold boot.
1. Press “Scroll down the jog wheel and hold” + press “reset” to enter the D.M. ( Figure 7.5.3 -1 )
2. Press “button 2” and “Button 3” at the same time will go into D.M. main menu. ( Figure 7.5.3 -2 )
3. Verify: “ Touch screen at the cross ” Picture show on screen after Tap four “crossing appear“ at corners in turn. ( Figure 7.5.3 -3 )
In cold boot, we will see Yes/No selection for upgrade image as below figure. Press button 1 for “Yes”, button 4 for “No”. Please
refer to Chapter 6 Barracuda PPC image upgrade for more detail about image upgrade.
Figure 7.5.3 -1 “Scroll down the jog wheel and
hold” + press “ reset ” to enter D.M.
Figure 7.5.3 -2 Press “button 2”
and “Button 3” at the same
time will go into D.M.
Figure 7.5.3 -3 Tap Cross +
position and Enter
D.M.
Button 1
Button 4
Button 2
Button 3
Jog-Wheel
Record
Reset