User manual IBM THINKPAD Z61P Hardware Guide

[. . . ] ThinkPad Z61e, Z61m, and Z61p Hardware Maintenance Manual ® October 2006 This manual supports: ThinkPad Z61e, Z61m, and Z61p (MT 0660, 0672, 0673, 0674, 0675, 9450, 9451, 9452, and 9453) ThinkPad Z61e, Z61m, and Z61p Hardware Maintenance Manual ® Note Before using this information and the product it supports, be sure to read the general information under "Notices" on page 165. First Edition (October 2006) © Copyright Lenovo 2006. GOVERNMENT USERS ­ RESTRICTED RIGHTS: Our products and/or services are provided with RESTRICTED RIGHTS. Use, duplication or disclosure by the Government is subject to the GSA ADP Schedule contract with Lenovo Group Limited, if any, or the standard terms of this commercial license, or if the agency is unable to accept this Program under these terms, then we provide this Program under the provisions set forth in Commercial Computer Software­Restricted Rights at FAR 52. 227-19, when applicable, or under Rights in Data-General, FAR 52. 227. 14 (Alternate III). Contents About this manual . 3 Strategy for replacing a hard disk drive . [. . . ] Remove the battery pack and measure the voltage between battery terminals 1, 2 (-) and 6, 7 (+). See the following figure: General descriptions 31 Checkout guide Terminal Voltage (V dc) Ground (-) + 0 to + 12. 6 7(+) 6(+) 5 4 3 1(-) 2(-) 1, 2 6, 7 3. If the voltage is less than +11. 0 V dc, the battery pack has been discharged. Note: Recharging will take at least 3 hours, even if the indicator does not turn on. If the voltage is still less than +11. 0 V dc after recharging, replace the battery. If the voltage is more than +11. 0 V dc, measure the resistance between battery terminals 3 and 2. If the resistance is not correct, replace the battery pack. If the resistance is correct, replace the system board. Checking the backup battery Do the following: 1. Power off the computer, and unplug the ac adapter from it. Remove the battery pack (see "1010 Battery pack" on page 58). Remove the backup battery (see "1140 Backup battery" on page 78). Measure the voltage of the backup battery. See the following figure. Red (+) Wire Red Voltage (V dc) +2. 5 to +3. 2 Ground Black (-) Black v If the voltage is correct, replace the system board. v If the voltage is not correct, replace the backup battery. v If the backup battery discharges quickly after replacement, replace the system board. 32 MT 0660, 0672, 0673, 0674, 0675, 9450, 9451, 9452, and 9453 ThinkPad Z61e, Z61m, and Z61p Product overview . Restoring the serial number of the system unit Retaining the UUID . Reading or writing the ECA information . 1020 Ultrabay Enhanced device (for Z61m and Z61p) . 1040 Hard disk drive cover, hard disk drive, and hard disk drive rubber rails . 1060 Palm rest or palm rest with fingerprint reader . 1100 PCI Express Mini Card for wireless LAN . 1110 PCI Express Mini Card for 802. 11 a/b/g/n wireless LAN . [. . . ] The furnishing of this document does not give you any license to these patents. You can send license inquiries, in writing, to: Lenovo (United States), Inc. 54 Research Triangle Park, NC 27709 U. S. A. Attention: Lenovo Director of Licensing LENOVO GROUP LTD. [. . . ]