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3
Is there
No
any boot dialog at
any time?
Yes
Proceed to boot up
troubleshooting.
4
16900A, 16902A, and 16903A Service Guide
Figure 8
16903A Display Troubleshooting Flowchart
A
B
Try
, then
.
1
Return to
between
each.
Check all cables to the front panel
assembly. Check all cables to the
A
CPU motherboard. Ensure the PCI
bridge board is fully seated. Reseat
as necessary.
Connect a known good external
monitor. NOTE: press and hold
B
"Touch off" to switch between the
internal and external monitors.
Is the
display screen readable
on the external
monitor?
Replace the CPU
motherboard.
1
Login to Windows and check display
Yes
settings. Set the default to display 1
(internal display) at 800x600 pixels
(16-bit color depth).
No
No
D
E
Try
, and then
.
1
Return to
between each.
Replace the LCD
panel.
Replace the MIB.
Replace the PCI bridge
board.
Troubleshooting
Is the
built-in display
completely
dark?
Yes
C
1
Try
& return to
.
C
D
E
5
35
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Table of Contents
Troubleshooting
