Compaq Presario,Presario 1200-XL101 User Manual page 70

Model XL2, XL201, XL202, XL203, XL204, XL205, XL212, XL220, XL222, XL223,
XL3, XL301, XL302, XL303, XL304, XL305, XL307, XL310, XL311,
XL312, XL314, XL320, XL323, XL325, XL326, XL327, XL330
Problem
The light tubes on the
edge of the display
panel do not light up
at all and Power-On
Self-Test (POST) does
not complete when the
unit is powered up.**
Back-light (brightness)
cannot be adjusted
with Fn+F7 or Fn+F8.
(Continued)
**This problem indicates that the back-light or its power circuitry has failed. If the back-
light is not functioning, the POST result cannot be observed. Connect the unit to an external
monitor before powering up the unit. If an external monitor is not available verify that POST
is complete by opening and closing the display, listening for the single or double beep, and
watching for the icons to turn on at the front of the notebook.
P N M
RESARIO OTEBOOK AINTENANCE AND
Presario 1200 Series
Solving Display Problems
Probable Cause
Defective system board.
Improper display cable
connections.
Defective inverter board.
Defective display cable.
Defective system board.
S G 1200 S
ERVICE UIDE ERIES
Solution(s)
Replace the system board.
1. Re-seat the display cable to the
system board.
2. Replace the display assembly.
Replace the display assembly.
Replace the display assembly.
Replace the system board.
T 29
ROUBLESHOOTING