1180 Wireless Wan Antenna Assembly (For Selected Models); 1190 System Board - Lenovo 21CH004MGE Hardware Maintenance Manual

Table of Contents

Advertisement

1180 Wireless WAN antenna assembly (for selected models)

For access, remove these FRUs:
• "1020 Base cover assembly" on page 65
• "1030 Built-in battery" on page 66
Removal steps of the wireless WAN antenna assembly
When installing: Ensure that the connector is attached firmly.

1190 System board

Important notices for handling the system board:
When handling the system board, read the following:
• Some components mounted on a system board are very sensitive. Improper handling of a system board can cause
damage to those components, and may cause a system malfunction.
• The system board has an accelerometer, which can be broken when several thousands of G-forces are applied.
Note: Dropping a system board from a height of as little as 6 inches so that it falls flat on a hard bench can subject
the accelerometer to as much as 6000 G's of shock.
• Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or
composite.
• Avoid rough handling of any kind.
• At every point in the process, be sure not to drop or stack the system board.
• If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or a corrugated
conductive surface.
• Avoid bending a system board and hard pushing to prevent cracking at each BGA (Ball Grid Array) chipset.
For access, remove these FRUs in order:
• "Removing the nano-SIM-card and nano-SIM-card tray" on page 62
• "1010 Keyboard" on page 63
• "1020 Base cover assembly" on page 65
• "1030 Built-in battery" on page 66
• "1040 M.2 solid-state drive and M.2 solid-state drive bracket (for Intel models only)" on page 67
• "1050 M.2 solid-state drive and M.2 solid-state drive bracket (for AMD models only)" on page 69
• "1060 Wireless WAN card and wireless-WAN-card bracket (for selected models)" on page 71
• "1070 I/O bracket" on page 72
• "1080 Thermal fan assembly" on page 72
.
Chapter 8
Removing or replacing an FRU
83

Advertisement

Table of Contents
loading

This manual is also suitable for:

P16s gen 1T16 gen 1Thinkpad t16 gen 1Thinkpad p16s gen 121bw21bv ... Show all

Table of Contents