IBM ThinkPad 701 HMM

Table Caption: This table lists a specific ThinkPad model, the 701C/701CS, with its internal model number 2630.

Table Caption: This table lists various system boards, cards, and parts with their respective views and page numbers, likely from a technical manual or parts catalog. It includes detailed views for system boards and inverter and multiport cards, alongside general parts listings.

Checkout Guide

Service for U. S. and Canada

In the U. S. and Canada, the ThinkPad 701C/701CS is serviced only through EasyServe.

Use the following procedure as a guide for computer problems:

1. Ask the customer for as much detail as possible about the failing symptoms.
2. Verify the symptoms by attempting to recreate the failure either by running the diagnostics test or by repeating the same operation. (To run the diagnostics, refer to 'Running the Diagnostics' on page 156.)
3. Use the following table with the verified symptom to determine which page to go to. Search the symptoms column and find the description that best matches your symptom; then, go to the page shown in the 'Go to' column.

Note: Before replacing any FRU, see 'FRU Removals and Replacements' on page 161.

Table Caption: This table is a troubleshooting guide that helps users diagnose hardware problems by directing them to specific sections for different symptoms, ranging from power failures and POST errors to configuration issues and intermittent problems.

General Checkout

The diagnostic tests are intended to test only IBM products. Non-IBM products, prototype cards, or modified options can give false errors and invalid system responses.

Warning:

• /bulletmed Only trained personnel should service the computer.
• /bulletmed Drives in the computer that you are servicing might have been rearranged or the drive startup sequence might have been altered. Be extremely careful during write operations such as copying, saving, or formatting. Data or programs can be destroyed if you select an incorrect drive.

Perform the following procedures to complete a general checkout:

1. Power-off the computer and all external devices.
2. Check all cables and power cords for correct connection.
3. Power-on all external devices.
4. Power-on the computer.
5. Press the F1 key any time while the POST memory count is proceeding. The computer emits one short beep at the end of POST and the Easy-Setup screen appears. If this does not occur, go to 'Symptom-to-FRU Index' on page 141.
6. Run the advanced diagnostics tests. For information on how to run the diagnostics tests, see 'Running the Diagnostics' on page 156. For information on how to disable the password, see 'Removing the Power-On Password' on page 156.
7. Find your symptom in the table in 'Checkout Guide' on page 127, and then go to the appropriate page. Otherwise, see 'Symptom-to-FRU Index' on page 141, and then go to 'Undetermined Problems' on page 152.

Memory Checkout

Depending on the amount of additional memory installed by the customer, the memory size that is available for customer use appears differently. This is not a hardware problem. Consult the following table for the available memory on a system with a 4MB base memory when the customer installs different sizes of small outline dual inline memory module (SO-DIMM).

Table Caption: This table shows how the total and available memory increases as SO-DIMM modules of different sizes are installed. The available memory is consistently less than the total memory, likely due to system overhead.

The following table shows the available memory on a system with an 8MB base memory with different sizes of SO-DIMM.

Table Caption: This table shows how the total and available memory increases as SO-DIMM modules of increasing capacity are installed. The available memory is consistently slightly less than the total memory, likely due to system overhead.

Memory errors might stop system operations or cause error codes to be displayed.

Use the following procedure to isolate memory problems:

Note: Make sure that the SO-DIMM is fully installed in the connector. A loose connection can cause an error. For more information about installing SO-DIMMs, see 'FRU Removals and Replacements' on page 161.

1. Power-on the computer. Press the F1 key any time while the POST memory count is proceeding. At the end of the memory test, the Easy-Setup screen appears.
2. Select Test and press Enter .
3. Press Ctrl + A to enter advanced diagnostics.
4. Select Memory and press Enter to run the memory test on base memory.
5. /bulletmed If