[. . . ] SONY may make improvements or changes to the products or the programs described in this publication at any time. It is possible that this publication may contain references to, or information about, SONY products (machines and programs), programming, or services that are not announced in your country. Such references or information must not be construed to mean that SONY intends to announce such SONY products, programming, or services in your country. Requests for technical information about SONY products should be made to your SONY authorized dealer or your SONY marketing representative. [. . . ] For how to remove the backup battery, see "1020 Backup battery" on page 58. Enter the SVP, at the Enter Current Password field. 26 ThinkPad A21e, A22e, i 1800 (MT 2655/2663/2664) Related service information 6. When the Enter New Password field opens, leave it blank and press Enter twice. Press F10; then select Yes in the Setup confirmation window. How to remove the hard-disk password Attention If User only mode is selected and the user HDP is forgotten and cannot be made available to the servicer, SONY does not provide any services to reset the user HDPs nor recover data from the hard-disk drive. To remove the user HDP that has been forgotten, when the SVP and master HDP is known, do the following: 1. Select Hard-disk x password, where x is the letter of the hard-disk drive. Enter the master HDP; then leave the New Password field blank and press Enter twice. Both user HDP and master HDP will have been removed. General descriptions 27 Related service information Power management To reduce power consumption, the computer has three power management modes: screen blank, standby, and hibernation. Notes v Screen blank mode is called standby mode in Windows 95 and Windows NT. v Standby mode is called suspend mode in Windows 95 and Windows NT. Screen blank mode Screen blank mode has three variants, as follows: 1. If you press Fn + F3, or the time set on the LCD off timer in SONY BIOS Setup Utility expires, v The LCD backlight turns off. If you are using the ACPI operating system and you press Fn + F3, v The LCD backlight turns off. v If you are using the APM operating system and have set the mode to Hibernate when battery becomes low, and the battery charge becomes critically low. Note: If you are using the ACPI operating system, you can define closing the lid, pressing the Power button and pressing Fn + F4 as events that cause the system to go into hibernation mode. When the power is turned on, the computer returns from hibernation mode and resumes operation. The hibernation file in the boot record on the hard-disk drive is read, and system status is restored from the hard-disk drive. 30 ThinkPad A21e, A22e, i 1800 (MT 2655/2663/2664) Checkout guide Checkout guide Use the following procedures as a guide in identifying and correcting problems with the ThinkPad computer. The use of non-SONY products, prototype cards, or modified options can lead to false indications of errors and invalid system responses. Try to re-create the failure by running the diagnostic test or by repeating the operation. Testing the computer The ThinkPad computer has a test program called PC-Doctor DOS (hereafter called PC-Doctor). You can detect errors by running the diagnostics test included in PC-Doctor. For details that depend on model-unique functions, refer to "Product overview" on page 39. For some possible configurations of the computer, PC-Doctor might not run correctly. To avoid this problem, you need to initialize the computer setup by use of the SONY BIOS Setup Utility before you run PC-Doctor. On the SONY BIOS Setup Utility screen, press F9, Enter, F10, and then Enter. [. . . ] XGA (continued) ThinkPad A21e, A22e, i 1800 119 Parts list Type Model HDD Bay device Mini PCI adapter CPU LCD A22e (Memory: 64 MB) MT265555x, A5x I MT265556x, A6x MT265557x, A7x, F7x, M7x MT265565x, B5x J MT265566x, B6 MT265567x, B7x i 1800 (Memory: 64 MB/128 MB) K L M MT2655P3J MT2655P7J MT2655PAJ 30 GB DVD/CD -RW 20 GB CD-RW Combo (Intel) Cel 750 CMG 750 14. 1-in. XGA DVDROM (8x) 30 GB CDROM (24x) Modem Ethernet Combo (Intel) Modem CMG 900 CMG 850 14. 1-in. XGA Combo (Intel) Note: The models labeled the type with asterisk are the high-end models and the others are the low-end models in preceding table. 120 ThinkPad A21e, A22e, i 1800 (MT 2655/2663/2664) Parts list Overall 1 22 ( k ) 21 a 20 b 19 2 c 18 16 i 15 14 13 h f 5 12 6 4 j 17 3 d e 11 10 g 9 8 7 Note: The parts marked with for A, B, C, D, E, K. in preceding figure is only ThinkPad A21e, A22e, i 1800 121 Parts list v Each FRU is available for all types/models, unless specific types or models are given. v The FRUs marked with one asterisk are CRU (customer replacable unit). [. . . ]