HP Book 800CT manual Power/battery, Computer won’t turn On/won’t boot

Symptom	Call Center	Repair Center
		external displays.
Screen white	Send in for repair.	Replace display
Bright or missing pixels or	Explain display spec for missing	Replace display if it fails
lines	pixels. Send in for repair if it	display spec criteria.
	fails display spec criteria.
Intermittent or no display	Press [Fn]+[SysRq]. If	Check for display cable
	ineffective, send in for repair.	pinched in case parts.
Power/battery
Short battery life	Turn display brightness down.	New BIOS v 1.02.00
	New BIOS v 1.02.00	Run PWR800.exe to measure)
	Set Computer and Hard Drive	battery life (program obtainable
	“Idle Time Before Turn-off” to	from the MCD Internal Web at
	equal values (Select OmniBook	http//webmcd.cv.hp.com/prods
	Power Management in Control	upp/ob800/software/index.htm
	Panel).
	Remove any PCMCIA cards and
	run PWR800.exe
	If above ineffective, send in for
	repair.
Battery gauge falls rapidly	Normal behavior at higher levels.
	Does the customer have another
	battery to try?
Battery won’t charge	Does customer have access to	Isolate to defective component
	another battery and ac adapter?	(battery, ac adapter or logic
	If so, have them try different	board).
	combinations to isolate to
	battery, ac adapter or
	OmniBook, and send defective
	component in for replacement. If
	not, send in all 3 for repair.
Computer won’t turn
on/won’t boot
On ac or battery	Is the charge light on when on	Check for display cable
	AC? If not, try another AC	pinched in case parts. Is
	adapter if available. If yes, hard	charge light on when on AC? If
	reset. If no response, remove	no, replace CPU board first,
	battery and AC, letting computer	then logic board. If yes, try to
	sit for a minute. Reinsert battery	boot off a floppy. If this works,
	and press reset button. If this	reburn BIOS. If it’s still bad,
	works, update the BIOS. Any	then replace HD. If still bad,
	sound? If yes, plug in external	replace logic board and
	display and press [Fn]+[SysRq].	reinstall old HD.
On battery (OK on ac)	What does the fuel gauge read?	Try a known good battery first.
	If empty, press [f4]+[ON]. If still	Examine battery contacts for
	empty, does customer have a 2nd	contamination or physical
	battery to try? If not, send in for	damage. Then replace logic
	repair.	board.
Error message: “Invalid	If floppy drive is connected,	Will computer boot off floppy
system disk”	check for non-system (boot)	drive? If yes, verify keyboard
	floppy disk in drive. If so,	support plate is of later design
	remove floppy and reset. Use	or has I/O insulator (see
	recovery CD to rebuild system if	Service Note 800-09). Verify
	still bad.	hard drive insulator is above
Error message: “Floppy disk		the keyboard support plate tabs

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