First, confirm the failure by performing a “clean” boot, as described below. Note that if the notebook fails to restart with a clean boot, it requires repair.

1.Remove all accessories, including SDRAM modules, port replicator, PC cards, printer, external monitor, pointing device, and keyboard.

2.Provide “clean” AC power—no auto adapter or unusual AC adapter configuration.

3.Press the reset button to return the notebook to a known state.

4.Press the power button to start the notebook.

If the BIOS detects a terminal error condition, it halts POST after issuing a beep code and/or displaying a message (see the following table). The beep code indicates the POST routine in which the terminal error occurred.

 

 

 

Table 3-4. POST Terminal-Error Beep Codes

 

 

 

 

 

 

 

 

Beep Codes*

POST Description

 

 

 

1

One short beep before boot.

 

 

 

1-2

Search for option ROMs.

 

 

 

1-1-1-3

Verify Real Mode.

 

 

 

1-1-1-4

Disable Non-Maskable Interrupt (NMI).

 

 

 

1-1-2-1

Get CPU type.

 

 

 

1-1-2-3

Initialize system hardware.

 

 

 

1-1-2-4

Disable shadow and execute code from ROM.

 

 

 

1-1-3-1

Initialize chipset with initial POST values.

 

 

 

1-1-3-2

Set IN POST flag.

 

 

 

1-1-3-3

Initialize CPU registers.

 

 

 

1-1-3-4

Enable CPU cache.

 

 

 

1-1-4-1

Initialize caches to initial POST values.

 

 

 

1-1-4-3

Initialize I/O component.

 

 

 

1-1-4-4

Initialize local bus IDE.

 

 

 

1-2-1-1

Initialize Power Management.

 

 

 

1-2-1-2

Load alternate registers with initial POST values.

 

 

 

1-2-1-3

Restore CPU control word during warm boot.

 

 

 

1-2-1-4

Initialize PCI Bus Mastering devices.

 

 

 

1-2-2-1

Initialize keyboard controller.

 

 

 

1-2-2-3

BIOS ROM checksum.

 

 

 

1-2-2-4

Initialize cache before memory Auto size.

 

 

 

1-2-3-1

8254 timer initialization.

 

 

 

1-2-3-3

8237 DMA controller initialization.

 

 

 

1-2-4-1

Reset Programmable Interrupt Controller.

 

 

 

1-3-1-1

Test DRAM refresh.

 

 

 

1-3-1-3

Test 8742 Keyboard Controller (on motherboard).

 

 

 

1-3-2-1

Set ES segment register to 4 GB.

 

 

 

1-3-3-1

Auto size DRAM; or wrong type or no RAM installed.

 

 

 

1-3-3-2

Initialize POST Memory Manager.

 

 

 

1-3-3-3

Clear 512 kB base RAM.

 

 

 

1-3-4-1

RAM failure on address line xxxx.

 

 

 

1-3-4-3

RAM failure on data bits xxxx of low byte of memory bus.

 

 

 

1-3-4-4

Enable cache before system BIOS shadow.

 

 

 

1-4-1-1

RAM failure on data bits xxxx of high byte of memory bus.

 

 

 

1-4-1-3

Test CPU bus-clock frequency.

 

 

 

1-4-1-4

Initialize Phoenix Dispatch Manager.

 

 

 

1-4-2-3

Warm start shut down.

 

 

 

1-4-3-1

Shadow system BIOS ROM.

 

 

 

1-4-3-3

Auto size cache.

 

 

 

1-4-4-1

Advanced configuration of chipset registers.

 

 

 

1-4-4-2

Load alternate registers with CMOS values.

 

 

 

2-1-1-2

Initialize extended memory for RomPilot.

 

 

 

2-1-1-3

Initialize interrupt vectors.

 

 

 

2-1-2-2

POST device initialization.

 

 

 

2-1-2-3

Check ROM copyright notice.

 

 

 

2-1-2-4

Initialize I20 support.

 

 

 

2-1-3-1

Check video configuration against CMOS.

 

 

 

2-1-3-2

Initialize PCI bus and devices.

 

 

 

2-1-3-3

Initialize all video adapters in system.

 

 

 

2-1-3-4

QuietBoot start (optional).

 

 

 

2-1-4-1

Shadow video BIOS ROM.

 

 

 

 

3-20

Troubleshooting and Diagnostics

Service Manual

Page 92 Page 94
Page 93
Image 93
HP 2100, 1100 manual Post Terminal-Error Beep Codes, Beep Codes Post Description
Page 92 Page 94

2100, 1100 specifications

The HP 1100 and 1100A are pivotal laser printers developed by Hewlett-Packard in the early 1990s, marking significant advancements in printing technology of their time. Since their introduction, these models have garnered a reputation for reliability and efficiency, making them a staple in many offices.

One of the standout features of the HP 1100 series is its fast printing speed. The printers can produce up to 12 pages per minute, which was an impressive feat at the time of their release. This speed significantly reduced waiting times, allowing users to handle large-volume printing jobs with ease. Furthermore, the printers support a variety of media types, including letterhead, envelopes, and labels, enhancing versatility in print applications.

The HP 1100 and 1100A utilize laser technology, which ensures sharp and high-quality prints. The printers have a native resolution of 600 x 600 dots per inch (DPI), enabling crisp text and detailed graphics. This high-resolution output made the models particularly favored for producing professional documents and presentations.

Another key characteristic is the generous memory capacity. The HP 1100 typically comes with 2 MB of standard RAM, which is expandable, allowing for improved performance in handling complex print jobs. Users can adjust the memory according to their requirements, resulting in better efficiency, particularly in environments that demand high-volume printing.

The HP 1100 series also showcases a straightforward and user-friendly operation. The built-in control panel simplifies the printing process, allowing users to manage jobs intuitively. Additionally, with the inclusion of parallel and later USB connectivity options, integration with various computer systems was seamless, ensuring compatibility with existing office infrastructure.

Energy efficiency is another aspect worth noting, as the printers are designed to consume minimal power when idle, aligning with the growing demand for eco-friendly solutions.

Overall, the HP 1100 and 1100A stand out for their robust construction, high-speed performance, exceptional print quality, and user-friendly features, making them a trusted choice for small to medium-sized businesses in need of dependable printing solutions. Their impact on the printing landscape during the 1990s continues to be felt today, as they paved the way for subsequent generations of laser printers.
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