HP 4550 manual 145

The following table lists the replacement intervals for printer consumable items and the control panel messages that prompt you when to replace each item.

Consumable	Printer message	Page count	Approximate
			time period2
Black toner	BLACK TONER LOW	9,000 pages1	4 months
cartridge	or
	BLACK TONER OUT
Cyan toner	CYAN TONER LOW	6,000 pages1	2.5 months
cartridge	or
	CYAN TONER OUT
Magenta toner	MAGENTA TONER LOW	6,000 pages1	2.5 months
cartridge	or
	MAGENTA TONER OUT
Yellow toner	YELLOW TONER LOW	6,000 pages1	2.5 months
cartridge	or
	YELLOW TONER OUT
Drum kit	DRUM LIFE OUT	6,250 color pages3 or	3 months for color
	REPLACE KIT	25,000 black and white	pages, or 12.5 months
	or	only pages.	for black and white
	WASTE TONER FULL		only pages.
	REPLACE DRUM KIT
Transfer kit	TRANSFER KIT OUT	25,000 color pages, or	12.5 months for color
	REPLACE KIT	100,000 black and	pages, or 50 months
		white only pages.	for black and white
			only pages.
Fuser kit	FUSER LIFE OUT	50,000 color pages, or	25 months for color
	REPLACE KIT	100,000 black and	pages, or 50 months
		white only pages.	for black and white
			only pages.

1Approximate average A4/letter-size page count based on 5% coverage of individual toner colors. Page counts are only estimations, and usage conditions and print patterns may cause results to vary.

2Approximate lifes are based on 2,000 pages per month.

36,250 color pages or 25,000 black-only pages; based on two-page, A4/letter-sized print jobs. Actual number of pages will vary depending on individual customer usage. Factors impacting page yield include color versus black-only printing mix, paper size, typical job length and complexity, and automatic duplexing.

EN

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