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ThinkPad.X1 Fold Gen 1

Hardware Maintenance Manual

ThinalPaul

Note: Before using this information and the product it supports, be sure to read the general information under Appendix A “Notices” on page 61.

Third Edition (June 2022)

LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-35F-05925.

Contents

About this manual . . .

Intermittent problems. ..... 31
Undetermined problems ..... 32
Chapter 5. Locations ..... 33
Overview ..... 33
Locating FRUs and CRUs ..... 33
Major FRUs and CRUs ..... 34
Other parts ..... 36
Looking up FRU information ..... 36
Chapter 6. FRU replacement notices ..... 37
Service tool kit ..... 37
Screw notices ..... 37
Retaining serial numbers ..... 38
Chapter 7. Removing or replacing a FRU ..... 39
General guidelines ..... 39
Before servicing the computer ..... 40
Disabling the built-in battery ..... 40
Removing the Nano-SIM-card tray ..... 40
1010 Folio cover set ..... 41
1020 Smart glass and adhesive tapes ..... 45
1030 Access door ..... 47
1040 Support bracket ..... 47
1050 System board assembly ..... 48
1060 Thermal sub-spreader ..... 53
1070 M.2 solid-state drive ..... 54
1080 Wireless WAN card ..... 55
1090 USB-C sub cards and USB-C sub card cable ..... 56
1110 OLED assembly with frame cover and miscellaneous parts ..... 58
Appendix A. Notices ..... 61
Appendix B. Abbreviation and acronym table ..... 63

About this manual

This manual contains service and reference information for the following ThinkPad $ ^{\circledR} $ products.

Machine

Machine type (MT)

ThinkPad X1 Fold Gen 1

ThinkPad X1 Fold Gen 1 5G

20RK and 20RL

Important:

• This manual is intended only for trained service technicians who are familiar with ThinkPad products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.

• Before servicing a ThinkPad product, be sure to read all the information under Chapter 1 “Safety information” on page 1 and Chapter 2 “Important service information” on page 21.

Chapter 1. Safety information

This chapter presents the following safety information that you should be familiar with before you service a ThinkPad computer.

• “General safety” on page 1

• “Electrical safety” on page 1

• “Safety inspection guide” on page 3

• “Handling devices that are sensitive to electrostatic discharge” on page 3

• “Grounding requirements” on page 4

• "Safety notices (multilingual translations)" on page 4

General safety

Follow these rules to ensure general safety:

• Observe good housekeeping in the area of the machines during and after maintenance.

• When lifting any heavy object:

1. Make sure that you can stand safely without slipping.

2. Distribute the weight of the object equally between your feet.

3. Use a slow lifting force. Never move suddenly or twist when you attempt to lift.

4. Lift by standing or by pushing up with your leg muscles; this action removes the strain from the muscles in your back. Do not attempt to lift any object that weighs more than 16 kg (35 lb) or that you think is too heavy for you.

Do not perform any action that causes hazards to the customer, or that makes the equipment unsafe.

• Before you start the machine, make sure that other service technicians and the customer's personnel are not in a hazardous position.

• Place removed covers and other parts in a safe place, away from all personnel, while you are servicing the machine.

• Keep your toolcase away from walk areas so that other people will not trip over it.

Do not wear loose clothing that can be trapped in the moving parts of a machine. Make sure that your sleeves are fastened or rolled up above your elbows. If your hair is long, fasten it.

• Insert the ends of your necktie or scarf inside clothing or fasten it with a nonconductive clip, about 8 centimeters (3 inches) from the end.

Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing.

Attention: Metal objects are good electrical conductors.

• Wear safety glasses when you are working in conditions that might be hazardous to your eyes. The conditions include hammering, drilling, soldering, cutting wire, attaching springs, using solvents, and so on.

• After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that is worn or defective.

• Reinstall other parts that you have removed.

Electrical safety

Observe the following rules when working on electrical equipment.

Important:

• Use only approved tools and test equipment. Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents.

• Many customers have, near their equipment, rubber floor mats that contain small conductive fibers to decrease electrostatic discharges. Do not use this type of mat to protect yourself from electrical shock.

• Find the room emergency power-off (EPO) switch, disconnecting switch, or electrical outlet. If an electrical accident occurs, you can then operate the switch or disconnect the power cord quickly.

Do not work alone under hazardous conditions or near equipment that has hazardous voltages.

Disconnect all power before:

• Performing a mechanical inspection

– Working near power supplies

• Removing or installing main units

• Before you start to work on