Lenovo ThinkPad C13 Yoga Gen 1 Owner's manual

Lenovo ThinkPad C13 Yoga Gen 1
Chromebook
Hardware Maintenance Manual

Note: Before u ing thi information and the product it upport , be ure to read the general information
under Appendix A “Notice ” on page 67.
First Edition (October 2020)
© Copyright Lenovo 2020.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or oftware i delivered pur uant a General Service Admini tration
“GSA” contract, u e, reproduction, or di clo ure i ubject to re triction et forth in Contract No. GS-35F-05925.

Contents
About this anual . . . . . . . . . . . . iii
Chapter 1. Safety infor ation . . . . . . 1
General afety . . . . . . . . . . . . . . . . 1
Electrical afety . . . . . . . . . . . . . . . . 1
Safety in pection guide . . . . . . . . . . . . . 3
Handling device that are en itive to electro tatic
di charge . . . . . . . . . . . . . . . . . . 3
Grounding requirement . . . . . . . . . . . . 4
Safety notice (multilingual tran lation ) . . . . . . 4
Chapter 2. General checkout . . . . . 21
What to do fir t . . . . . . . . . . . . . . . 21
Power y tem checkout . . . . . . . . . . . 22
Checking the ac power adapter . . . . . . . 22
Checking the built-in battery and operational
charging . . . . . . . . . . . . . . . . 22
Chapter 3. Create and use a Return
Merchandise Authorization (RMA). . . 25
What i a RMA?. . . . . . . . . . . . . . . 25
Create a RMA . . . . . . . . . . . . . . . 25
U e the RMA . . . . . . . . . . . . . . . . 26
Chapter 4. Use the keyboard
shortcuts . . . . . . . . . . . . . . . . 28
Chapter 5. Locations . . . . . . . . . 29
Locating control and connector . . . . . . . . 29
Locating FRU and CRU . . . . . . . . . . . 31
Major FRU and CRU . . . . . . . . . . 32
LCD FRU . . . . . . . . . . . . . . . 34
Mi cellaneou part . . . . . . . . . . . 35
Connector and cable guide . . . . . . . . . . 35
Looking up FRU information . . . . . . . . . . 37
Chapter 6. FRU replace ent
notices . . . . . . . . . . . . . . . . . 39
Service tool kit . . . . . . . . . . . . . . . 39
Screw notice . . . . . . . . . . . . . . . 39
Chapter 7. FRU replace ent
notices . . . . . . . . . . . . . . . . . 41
General guideline . . . . . . . . . . . . . . 41
Before ervicing the Chromebook. . . . . . . . 42
Di abling the built-in battery . . . . . . . . 42
1010 Lenovo Garaged USI pen (for elected
model ) . . . . . . . . . . . . . . . . . . 42
1020 Ba e cover a embly . . . . . . . . . . 42
1030 Built-in battery . . . . . . . . . . . . . 43
1040 Wirele LAN card . . . . . . . . . . . 44
1050 M.2 olid- tate drive and M.2 olid- tate
drive cover. . . . . . . . . . . . . . . . . 45
1060 I/O board bracket . . . . . . . . . . . 46
1070 I/O board cable and I/O board . . . . . . . 47
1080 Thermal fan a embly . . . . . . . . . . 48
1090 LCD unit . . . . . . . . . . . . . . . 49
1110 Pen charger cable. . . . . . . . . . . . 51
1120 Speaker a embly . . . . . . . . . . . 52
1130 Touchpad and touchpad cable. . . . . . . 52
1140 Fingerprint reader bracket, fingerprint reader
cable, and fingerprint reader . . . . . . . . . 53
1150 Sy tem board . . . . . . . . . . . . . 54
1160 World-Facing camera board and cable (for
elected model ) . . . . . . . . . . . . . . 55
1170 Keyboard a embly . . . . . . . . . . . 56
Removing the LCD FRU . . . . . . . . . . . 57
2010 Strip cover . . . . . . . . . . . . . 57
2020 LCD panel . . . . . . . . . . . . . 57
2030 LCD cable . . . . . . . . . . . . . 60
2040 Camera board and camera with
microphone cable . . . . . . . . . . . . 61
2050 Microphone board. . . . . . . . . . 61
2060 Microphone with en or board (for
elected model ) . . . . . . . . . . . . 62
2070 Camera cable . . . . . . . . . . . 62
2080 LED cable . . . . . . . . . . . . . 63
2090 LCD hinge a embly . . . . . . . . 64
2100 LCD rear cover a embly . . . . . . . 64
Appendix A. Notices. . . . . . . . . . 67
© Copyright Lenovo 2020 i

ii Lenovo ThinkPad C13 Yoga Gen 1 Chromebook Hardware Maintenance Manual

About this anual
Thi manual contain ervice and reference information for the following Lenovo product :
Lenovo ThinkPad C13 Yoga Gen 1
Chromebook
Machine type (MT): 20UX and 20UY
U e thi manual along with the advanced diagno tic te t to trouble hoot problem .
I portant:
• Thi manual i intended only for trained ervice technician who are familiar with Lenovo product . U e
thi manual along with the advanced diagno tic te t to trouble hoot problem effectively.
• Depending on the model, ome hardware configuration and oftware program might not be available on
the Chromebook™. Some tatement in thi manual might not be applicable to the Chromebook.
• Before ervicing a Lenovo product, be ure to read all the information under Chapter 1 “Safety
information” on page 1.
© Copyright Lenovo 2020 iii

iv Lenovo ThinkPad C13 Yoga Gen 1 Chromebook Hardware Maintenance Manual

Chapter 1. Safety infor ation
Thi chapter pre ent the following afety information that you need to be familiar with before you ervice a
Chromebook.
• “General afety” on page 1
• “Electrical afety” on page 1
• “Safety in pection guide” on page 3
• “Handling device that are en itive to electro tatic di charge” on page 3
• “Grounding requirement ” on page 4
• “Safety notice (multilingual tran lation )” on page 4
General safety
Follow the e rule to en ure general afety:
• Ob erve good hou ekeeping in the area of the machine during and after maintenance.
• When lifting any heavy object:
1. En ure that you can tand afely without lipping.
2. Di tribute the weight of the object equally between your feet.
3. U e a low lifting force. Never move uddenly or twi t when you attempt to lift.
4. Lift by tanding or by pu hing up with your leg mu cle ; thi action remove the train from the
mu cle in your back. Do not attempt to lift any object that weigh more than 16 kg (35 lb) or that you
think i too heavy for you.
• Do not perform any action that cau e hazard to the cu tomer, or that make the equipment un afe.
• Before you tart the machine, en ure that other ervice technician and the cu tomer’ per onnel are not
in a hazardou po ition.
• Place removed cover and other part in a afe place, away from all per onnel, while you are ervicing the
machine.
• Keep your toolca e away from walk area o that other people will not trip over it.
• Do not wear loo e clothing that can be trapped in the moving part of a machine. En ure that your leeve
are fa tened or rolled up above your elbow . If your hair i long, fa ten it.
• In ert the end of your necktie or carf in ide clothing or fa ten it with a nonconductive clip, about 8
centimeter (3 inche ) from the end.
• Do not wear jewelry, chain , metal-frame eyegla e , or metal fa tener for your clothing, becau e metal
object are good electrical conductor .
• Wear afety gla e when you are hammering, drilling, oldering, cutting wire, attaching pring , u ing
olvent , or working in any other condition that might be hazardou to your eye .
• After ervice, rein tall all afety hield , guard , label , and ground wire . Replace any afety device that
i worn or defective.
• Rein tall all cover correctly before returning the machine to the cu tomer.
• Fan louver on the machine help to prevent overheating of internal component . Do not ob truct fan
louver or cover them with label or ticker .
Electrical safety
Ob erve the following rule when working on electrical equipment.
© Copyright Lenovo 2020 1

I portant:
• U e only approved tool and te t equipment. Some hand tool have handle covered with a oft material
that doe not in ulate you when working with live electrical current .
• Many cu tomer have, near their equipment, rubber floor mat that contain mall conductive fiber to
decrea e electro tatic di charge (ESD). Do not u e thi type of mat to protect your elf from electrical
hock.
• Find the room emergency power-off (EPO) witch, di connecting witch, or electrical outlet. If an electrical
accident occur , you can then operate the witch or unplug the power cord quickly.
• Do not work alone under hazardou condition or near equipment that ha hazardou voltage .
• Di connect all power before:
– Performing a mechanical in pection
– Working near power upplie
– Removing or in talling main unit
• Before you tart to work on the machine, unplug the power cord. If you cannot unplug it, a k the cu tomer
to power off the wall box that upplie power to the machine, and to lock the wall box in the off po ition.
• If you need to work on a machine that ha expo ed electrical circuit , ob erve the following precaution :
– En ure that another per on, familiar with the power-off control , i near you. That per on mu t be there
to witch off the power, if nece ary.
– U e only one hand when working with powered-on electrical equipment; keep the other hand in your
pocket or behind your back.
CAUTION:
An electrical shock can occur only when there is a co plete circuit. By observing the above rule,
you ay prevent a current fro passing through your body.
– When u ing te ter , et the control correctly and u e the approved probe lead and acce orie for
that te ter.
– Stand on uitable rubber mat (obtained locally, if nece ary) to in ulate you from ground uch a
metal floor trip and machine frame .
Ob erve the pecial afety precaution when you work with very high voltage . In truction for the e
precaution are in the afety ection of maintenance information. U e extreme care when mea uring high
voltage .
• Regularly in pect and maintain your electrical hand tool for afe operational condition.
• Do not u e worn or broken tool and te ter .
• Never a ume that power ha been di connected from a circuit. Fir t, check that it ha been powered off.
• Alway look carefully for po ible hazard in your work area. Example of the e hazard are moi t floor ,
nongrounded power exten ion cable , power urge , and mi ing afety ground .
• Do not touch live electrical circuit with the reflective urface of a pla tic dental mirror. The urface i
conductive; uch touching can cau e per onal injury and machine damage.
• Do not ervice the following part with the power on:
– Power upply unit
– Pump
– Blower and fan
– Motor generator
– Unit imilar to tho e li ted above
Thi practice en ure correct grounding of the unit .
• If an electrical accident occur :
– U e caution; do not become a victim your elf.
– Switch off power.
– Send another per on to get medical aid.
2Lenovo ThinkPad C13 Yoga Gen 1 Chromebook Hardware Maintenance Manual

Safety inspection guide
The purpo e of thi in pection guide i to a i t you in identifying potentially un afe condition . A each
machine wa de igned and built, required afety item were in talled to protect u er and ervice
technician from injury. Thi guide addre e only tho e item . You hould u e good judgment to identify
potential afety hazard due to attachment of non-Lenovo feature or option not covered by thi in pection
guide.
If any un afe condition are pre ent, you mu t determine how eriou the apparent hazard could be and
whether you can continue without fir t correcting the problem.
Con ider the e condition and the afety hazard they pre ent:
• Electrical hazard , e pecially primary power (primary voltage on the frame can cau e eriou or fatal
electrical hock)
• Explo ive hazard , uch a a damaged CRT face or a bulging capacitor
• Mechanical hazard , uch a loo e or mi ing hardware
To determine whether there are any potentially un afe condition , u e the following checkli t at the
beginning of every ervice ta k. Begin the check with the power off, and the power cord di connected.
Checkli t:
1. Check exterior cover for damage (loo e, broken, or harp edge ).
2. Turn off the computer. Di connect the power cord.
3. Check the power cord for:
a. A third-wire ground connector in good condition. U e a meter to mea ure third-wire ground
continuity for 0.1 ohm or le between the external ground pin and the frame ground.
b. The power cord hould be the authorized type pecified for your computer. Go to: http ://
upport.lenovo.com/part lookup.
c. In ulation mu t not be frayed or worn.
4. Check for cracked or bulging batterie .
5. Remove the cover.
6. Check for any obviou non-Lenovo alteration . U e good judgment a to the afety of any non-Lenovo
alteration .
7. Check in ide the unit for any obviou un afe condition , uch a metal filing , contamination, water or
other liquid , or ign of fire or moke damage.
8. Check for worn, frayed, or pinched cable .
9. Check that the power- upply cover fa tener ( crew or rivet ) have not been removed or tampered
with.
Handling devices that are sensitive to electrostatic discharge
Any computer part containing tran i tor or integrated circuit (IC ) hould be con idered en itive to
electro tatic di charge (ESD). ESD damage can occur when there i a difference in charge between object .
Protect again t ESD damage by equalizing the charge o that the machine, the part, the work mat, and the
per on handling the part are all at the ame charge.
Notes:
1. U e product- pecific ESD procedure when they exceed the requirement noted here.
Chapter 1.Safety information 3

2. En ure that the ESD protective device you u e have been certified (ISO 9000) a fully effective.
When handling ESD- en itive part :
• Keep the part in protective package until they are in erted into the product.
• Avoid contact with other people.
• Wear a grounded wri t trap again t your kin to eliminate tatic on your body.
• Prevent the part from touching your clothing. Mo t clothing i in ulative and retain a charge even when
you are wearing a wri t trap.
• U e a grounded work mat to provide a tatic-free work urface. The mat i e pecially u eful when
handling ESD- en itive device .
• Select a grounding y tem, uch a tho e li ted below, to provide protection that meet the pecific
ervice requirement.
Note: The u e of a grounding y tem to guard again t ESD damage i de irable but not nece ary.
– Attach the ESD ground clip to any frame ground, ground braid, or green-wire ground.
– When working on a double-in ulated or battery-operated y tem, u e an ESD common ground or
reference point. You can u e coax or connector-out ide hell on the e y tem .
– U e the round ground prong of the ac plug on ac-operated computer .
Grounding require ents
Electrical grounding of the computer i required for operator afety and correct y tem function. Proper
grounding of the electrical outlet can be verified by a certified electrician.
Safety notices ( ultilingual translations)
The afety notice in thi ection are provided in the following language :
• Engli h
• Arabic
• Brazilian Portugue e
• French
• German
• Hebrew
• Japane e
• Korean
• Spani h
• Traditional Chine e
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