NEC Barracuda Service Manual page 102

Pda
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7.6.1.2 Display
Test equipment: none.
Purpose: Verify the display and frame buffer (system RAM) function.
Test Method: display 8 color patterns.
Leave method: Touch pen.
7.6.1.3 Brightness
Test equipment: jog wheel button, serial port.
Purpose: Verify the panel brightness function.
Test Method: It will show a percentage of the brightness on the bottom after you execute this item. Scroll the jog
wheel previous/next to adjust the brightness percentage. Or use up/down direction key via HyperTerminal to
adjust the brightness percentage.
Leave method: Record button or Escape key (by serial control).
--- System will show current brightness on screen and users can use method 1 or method 2 to change brightness.
Push "Record" button or Esc to finish this test; system will go back to original value when users use DM first time.
Barracuda PDA Maintenance
Method 1:
Scroll up the jog wheel, brightness will decrease;
Scroll down the jog wheel, brightness will increase.
Method 2:
Use " U " on the keyboard, brightness will decrease,
Use " D " , brightness will increase.
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