Hardware Maintenance Manual
Page 3
... System supporting the Lenovo diagnostics programs 40 Power system checkout 42 Checking the ac power adapter 43 Checking operational charging 44 Checking the battery pack 44 Checking the backup battery 44 Chapter 4. Removing and replacing a FRU 67 Before servicing ThinkPad T420s and T420si models 67 1010 Battery pack 68 1020...32 Product definition 32 FRU identification for wireless WAN . . 77 1070 4-in-1 media card reader 79 1080 Keyboard 80 1090 Backup battery 83 1100 Palm rest with fingerprint reader, smart card reader, and speaker 84 1110 LCD unit 88 1120 DC-in sub card 90...
... System supporting the Lenovo diagnostics programs 40 Power system checkout 42 Checking the ac power adapter 43 Checking operational charging 44 Checking the battery pack 44 Checking the backup battery 44 Chapter 4. Removing and replacing a FRU 67 Before servicing ThinkPad T420s and T420si models 67 1010 Battery pack 68 1020...32 Product definition 32 FRU identification for wireless WAN . . 77 1070 4-in-1 media card reader 79 1080 Keyboard 80 1090 Backup battery 83 1100 Palm rest with fingerprint reader, smart card reader, and speaker 84 1110 LCD unit 88 1120 DC-in sub card 90...
Hardware Maintenance Manual
Page 73
... remove the battery pack, and then disconnect any time upon request. Verify this by the CRU. Before touching it in the direction as shown in place and none are loose inside the computer. Before servicing ThinkPad T420s and T420si models Removing the SIM card: © Copyright Lenovo 2012 67 CRU...Such FRUs are listed. 4. Remove them in the order in which they are listed in the publications that all power cords from Lenovo at http://www.lenovo.com/CRUs. Follow the correct sequence in place, reverse the removal procedure and follow any FRU, review Chapter 7 "FRU replacement ...
... remove the battery pack, and then disconnect any time upon request. Verify this by the CRU. Before touching it in the direction as shown in place and none are loose inside the computer. Before servicing ThinkPad T420s and T420si models Removing the SIM card: © Copyright Lenovo 2012 67 CRU...Such FRUs are listed. 4. Remove them in the order in which they are listed in the publications that all power cords from Lenovo at http://www.lenovo.com/CRUs. Follow the correct sequence in place, reverse the removal procedure and follow any FRU, review Chapter 7 "FRU replacement ...
Hardware Maintenance Manual
Page 74
Notice on disconnecting the cable from the flip-lock ZIF connector, do as shown in ThinkPad T420s and T420si models are connected to remove the battery pack first. (See 1010 Battery pack.) After you start the servicing. If the computer you are servicing has the SIM card, remove it before you finish... the servicing, make sure that the customer has installed. Some models of the ThinkPad T420s and T420si you are servicing ...
Notice on disconnecting the cable from the flip-lock ZIF connector, do as shown in ThinkPad T420s and T420si models are connected to remove the battery pack first. (See 1010 Battery pack.) After you start the servicing. If the computer you are servicing has the SIM card, remove it before you finish... the servicing, make sure that the customer has installed. Some models of the ThinkPad T420s and T420si you are servicing ...
(English) User Guide
Page 23
... for wireless WAN or mSATA solid state drive 4 Memory-upgrade slot 6 SIM card slot Chapter 1. ThinkPad T420s/T420si bottom view 1 PCI Express Mini Card slot for wireless LAN/WiMAX 3 Docking connector 5 Hard disk drive or solid state drive 7 Battery 2 PCI Express Mini Card slot for SD card. • If your computer have an ExpressCard...
... for wireless WAN or mSATA solid state drive 4 Memory-upgrade slot 6 SIM card slot Chapter 1. ThinkPad T420s/T420si bottom view 1 PCI Express Mini Card slot for wireless LAN/WiMAX 3 Docking connector 5 Hard disk drive or solid state drive 7 Battery 2 PCI Express Mini Card slot for SD card. • If your computer have an ExpressCard...
(English) User Guide
Page 25
...electrical shock, do not connect the telephone cable to the ThinkPad Port Replicator Series 3, ThinkPad Mini Dock Series 3, ThinkPad Mini Dock Plus Series 3, or ThinkPad Mini Dock Plus Series 3 (170 W); Chapter 1. ThinkPad T420s/T420si rear view 1 Power jack 3 USB connector (rear) ...5 DisplayPort connector 7 Fan louvers (rear) 2 Ethernet connector 4 Always On USB connector 6 Monitor connector 1 Power jack The ac power adapter cable connects to the computer power jack to provide power to the computer and charge the battery...
...electrical shock, do not connect the telephone cable to the ThinkPad Port Replicator Series 3, ThinkPad Mini Dock Series 3, ThinkPad Mini Dock Plus Series 3, or ThinkPad Mini Dock Plus Series 3 (170 W); Chapter 1. ThinkPad T420s/T420si rear view 1 Power jack 3 USB connector (rear) ...5 DisplayPort connector 7 Fan louvers (rear) 2 Ethernet connector 4 Always On USB connector 6 Monitor connector 1 Power jack The ac power adapter cable connects to the computer power jack to provide power to the computer and charge the battery...