Other tests in Extended Service mode

The following chart shows tests that can be performed in Extended Service mode and provides a brief explanation of each test:

Extended Service mode tests

Test	Explanation

Keypad test	Tests that all buttons are functioning (by
	pressing the buttons in sequence).

LCD test	Tests the control-panel display.

Control panel test	Tests the control-panel lights.

Sensor states	Shows current detector activation levels.
	Detector 1 and detector 2 are paper-size
	detectors. The control-panel display shows the
	percentage of time each detector is activated.

All LCD characters	Scrolls through the full list of control-panel
	display characters.

Scanner plots	Tests and recalibrates the document scanner.

Scanner LED	After selecting this menu item, lift the
	document-release door, and verify that all of
	the LEDs in the contact image sensor are lit.

ADF feed test	Runs the document-scanner pickup rollers
	once.

ADF motor test	Runs the document-scanner motor once.

Individual diagnostics	Run individual tests from the self-test sequence
	(see the Extended Service mode self-test
	failures table).

Modem tone	Generates tones with various frequencies from
	300 Hz to 2425 Hz.

Modem modulation	Generates various fax identification signals.

102 Chapter 2 – Service mode

LJ 2100, LJ 1100SE, LJ 1100A, LJ 4000TN, LJ 1100AXI specifications

The HP LaserJet series has long been recognized for its reliability and performance in the world of personal and office printing. Among its noteworthy models are the HP LaserJet 4000, LaserJet 2100TN, LaserJet 2100M, LaserJet 1100ASE, and LaserJet 1100AXI. Each model brings its own unique features, technologies, and characteristics that cater to various printing needs.

The HP LaserJet 4000 is a robust workhorse designed for medium to large office environments. It features a print speed of up to 20 pages per minute and a maximum print resolution of 1200 x 1200 dpi, ensuring crisp and clear text and graphics. Equipped with a 90 MHz processor and 8 MB of RAM, the 4000 can handle complex documents with ease. It supports HP’s built-in networking capabilities, allowing multiple users to share the printer effortlessly. Additionally, its versatility extends to various media sizes and types, making it suitable for diverse printing tasks.

The LaserJet 2100TN is another commendable model that offers both performance and value. With a print speed of 20 pages per minute and a resolution of 600 x 600 dpi, it’s an ideal choice for small to medium-size businesses. Its advanced HP Smart Printing technology increases its efficiency by optimizing print quality and minimizing paper wastage. The model comes with a 250-sheet tray and supports optional paper feeders, enhancing productivity for high-volume printing tasks.

The HP LaserJet 2100M features an intuitive design that emphasizes user-friendliness. It boasts the same print speed and resolution as the 2100TN but includes an additional 32 MB of RAM, allowing for enhanced processing power. The model supports direct printing from various devices, making it a versatile option for busy office environments.

The LaserJet 1100ASE and 1100AXI models are suited for smaller teams or home offices. Both models deliver reliable performance with print speeds of up to 10 pages per minute. The 1100ASE comes equipped with a parallel port for easy connectivity, while the 1100AXI includes USB support for modern devices. With a compact design, these printers fit perfectly in space-constrained environments without sacrificing print quality, with a maximum print resolution of 600 x 600 dpi.

Overall, the HP LaserJet 4000, 2100TN, 2100M, 1100ASE, and 1100AXI cater to a range of printing needs, offering diverse features and technologies. They are recognized for their durability, efficiency, and exceptional print quality, making them a standout choice for any printing requirement. Whether for high-volume office tasks or everyday documents, these models exemplify HP's commitment to excellence in laser printing.

HP LJ 1100AXI Other tests in Extended Service mode, Extended Service mode tests, Test Explanation

Models: LJ 2100 LJ 1100SE LJ 1100A LJ 4000TN LJ 1100AXI LJ 1100ASE LJ 2100M LJ 2100TN LJ 4000