HP Book 800CT manual OmniBook Components, OmniBook Troubleshooting Tips, Mouse

Troubleshooting Tips

This section provides various troubleshooting tips for the OmniBook 800 and its accessories. As with all troubleshooting, these tips should be combined with other techniques and tools to effectively diagnose hardware issues.

OmniBook Components

The following table lists various symptoms of several OmniBook components. Troubleshooting techniques are then listed for both Call Center and Repair Center Personnel.

Table 15 - OmniBook Troubleshooting Tips

Symptom	Call Center	Repair Center
Mouse
Cursor moves on its own	Is the link warped? (The link is	Mouse grommet (Service Note
	the flat piece of plastic	800-08). Alternatively, inspect
Cursor floats in direction	connecting the mouse to the	for a burr on a contact inside
different for mouse	computer) If so, send the	the hole the grommet fits in on
movement	customer a new mouse.	the logic board (carefully file
		off the burr).
Cursor sticks to one side of	Otherwise, send in for repair.	Sticking can be an open or
display after mouse has		missing resistor on the logic
moved in opposite direction		board. Replace logic assy.
Cursor won’t go to edge of	Press firmly with mouse when	Mouse grommet or paw active
display	reaching edge of screen. If	assy; if cursor won’t move at
	problem still occurs, send in for	all, most probably a bad paw
	repair.	active assy. Also could be an
		open resistor on logic board.
Cursor jitters	Send in for repair	Paw active assy or warped link.
Mouse button press not	Does customer have access to	Mouse or paw active assembly
recognized	another OB with a mouse? If so,
	swap mouse. If OB works now,
	send a new mouse. If not, send
	in for repair.
Stiff up/down motion	Send in for repair	Paw active assembly (Service
		Note 800-10)
Fine positioning of cursor	Some vertical backlash on the	Paw active assembly
difficult	right side of the display is
	normal. It requires slightly more
	mouse movement on the right
	side before the cursor moves.
Display
Brightness does not adjust	The adjustment steps are very	Verify brightness adjusts
	small and may not be very	properly. If ineffective, replace
	noticeable. Also, TFT display	display.
	will not darken as much as a
	CSTN, so customer’s previous
	experiences with notebooks may
	affect expectation.
Garbage on display when	Try a hard reset. If this doesn’t	Replace logic PCA if problem
first turned on	help, send in for repair.	occurs on both internal and

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