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Table 31. Removal steps of USB connector board and USB cable assembly (continued)
For ThinkPad L420 and L421 models:
2040 DC-in cable and base cover
For access, remove these FRUs in order:
• “1010 Battery pack” on page 57
• “1020 ExpressCard blank bezel and Media Card blank bezel” on page 58
• “1030 Optical drive or travel cover” on page 60
• “1040 Thermal cover” on page 61
• “1050 Hard disk drive or solid state drive assembly” on page 62
• “1060 DIMM” on page 65
• “1070 Fan assembly” on page 66
• “1110 Wireless WAN slot cover and PCI Express Mini Card for wireless WAN” on page 71
• “1110 mSATA solid state drive” on page 73
• “1120 Palm rest assembly with cables” on page 74
• “1130 PCI Express Mini Card for wireless LAN” on page 78
• “1160 Media Card Reader slot board and Media Card Reader cable assembly” on page 81
• “1170 Keyboard” on page 83
• “1180 Keyboard bezel” on page 85
• “1190 LCD unit” on page 87
• “2010 Top shielding assembly” on page 90
• “2020 System board assembly” on page 93
100 Hardware Maintenance Manual