Lenovo Yoga Slim 7 Pro Owner's manual

Hardware Maintenance Manual
Yoga Slim 7 Pro 16″

First Edition (October 2021)
© Copyright Lenovo 2021.

Contents
About this m nu l . . . . . . . . . . . . iii
Ch pter 1. S fety inform tion . . . . . . 1
General safety . . . . . . . . . . . . . . . . 1
Electrical safety . . . . . . . . . . . . . . . . 1
Safety inspection guide . . . . . . . . . . . . . 2
Handling de ices that are sensiti e to electrostatic
discharge . . . . . . . . . . . . . . . . . . 3
Grounding requirements . . . . . . . . . . . . 4
Safety notices (multilingual translations) . . . . . . 4
Ch pter 2. Gener l checkout . . . . . 21
What to do first . . . . . . . . . . . . . . . 21
CRU list . . . . . . . . . . . . . . . . . . 22
Ch pter 3. Identifying FRUs
(CRUs) . . . . . . . . . . . . . . . . . 23
Locate FRUs and CRUs . . . . . . . . . . . 23
Ch pter 4. Removing FRU or
CRU . . . . . . . . . . . . . . . . . . 27
Ser ice tools . . . . . . . . . . . . . . . . 27
General guidelines. . . . . . . . . . . . . . 27
Remo e the lower case . . . . . . . . . . . . 28
Remo e the battery pack . . . . . . . . . . . 29
Remo e the solid-state dri e (SSD) module . . . . 30
Remo e the speakers . . . . . . . . . . . . 31
Remo e the I/O bracket (for DIS) . . . . . . . . 32
Remo e the touchpad cable . . . . . . . . . . 33
Remo e the acetate tape . . . . . . . . . . . 34
Remo e the DC-in cable (for DIS) . . . . . . . . 34
Remo e the D co er mylar . . . . . . . . . . 36
Remo e the heat sink . . . . . . . . . . . . 37
Remo e the Wi-Fi card . . . . . . . . . . . . 38
Remo e the fans . . . . . . . . . . . . . . 38
Remo e the I/O board . . . . . . . . . . . . 39
Remo e the system board and the I/O board
cable . . . . . . . . . . . . . . . . . . . 41
Use a Golden Key U1 tool to flash-write key id
information . . . . . . . . . . . . . . . 43
Remo e the LCD module . . . . . . . . . . . 44
Remo e the upper case. . . . . . . . . . . . 45
Appendix A. L bel loc tions. . . . . . 47
Appendix B. Content templ te for
the l ser-etched l bel . . . . . . . . . 49
Trademarks . . . . . . . . . . . . . . . . . li
© Copyright Leno o 2021 i

ii Hardware Maintenance Manual

About this m nu l
This manual contains ser ice and reference information for the following Leno o products.
M chine M chine type (MT)
Yoga Slim 7 Pro 16ACH6 82QQ
Import nt:
• This manual is intended only for trained ser ice technicians who are familiar with Leno o products.
• Before ser icing a Leno o product, be sure to read all the information under Chapter 1 “Safety
information” on page 1.
© Copyright Leno o 2021 iii

iv Hardware Maintenance Manual

Ch pter 1. S fety inform tion
This chapter presents the following safety information that you need to be familiar with before you ser ice a
Leno o notebook computer.
Gener l s fety
Follow these rules to ensure general safety:
• Obser e good housekeeping in the area of the machines during and after maintenance.
• When lifting any hea y 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. Ne er mo e suddenly or twist when you attempt to lift.
4. Lift by standing or by pushing up with your leg muscles; this action remo es 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 ser ice technicians and the customer's personnel are
not in a hazardous position.
• Place remo ed co ers and other parts in a safe place, away from all personnel, while you are ser icing the
machine.
• Keep your tool case away from walk areas so that other people will not trip o er it.
• Do not wear loose clothing that can be trapped in the mo ing parts of a machine. Make sure that your
slee es are fastened or rolled up abo e your elbows. If your hair is long, fasten it.
• Insert the ends of your necktie or scarf inside clothing or fasten it with a non-conducti e 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 hammering, drilling, soldering, cutting wire, attaching springs, using
sol ents, or working in any other conditions that might be hazardous to your eyes.
• After ser ice, reinstall all safety shields, guards, labels, and ground wires. Replace any safety de ice that
is worn or defecti e.
• Reinstall all co ers correctly before returning the machine to the customer.
• Fan lou ers on the machine help to pre ent o erheating of internal components. Do not obstruct fan
lou ers or co er them with labels or stickers.
Electric l s fety
Obser e the following rules when working on electrical equipment.
Import nt: Use only appro ed tools and test equipment. Some hand tools ha e handles co ered with a soft
material that does not insulate you when working with li e electrical currents.Many customers ha e, near
their equipment, rubber floor mats that contain small conducti e 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 unplug the power cord quickly.
• Do not work alone under hazardous conditions or near equipment that has hazardous oltages.
• Disconnect all power before:
– Performing a mechanical inspection
– Working near power supplies
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– Remo ing or installing main units
• Before you start to work on the machine, unplug the power cord. If you cannot unplug it, ask the customer
to power-off the wall box that supplies power to the machine, and to lock the wall box in the off position.
• If you need to work on a machine that has e posed electrical circuits, obser e the following precautions:
– Ensure that another person, familiar with the power-off controls, is near you.
Attention: Another person must be there to switch off the power, if necessary.
– Use only one hand when working with powered-on electrical equipment; keep the other hand in your
pocket or behind your back.
Attention: An electrical shock can occur only when there is a complete circuit. By obser ing the abo e
rule, you may pre ent a current from passing through your body.
– When using testers, set the controls correctly and use the appro ed probe leads and accessories for
that tester.
– Stand on suitable rubber mats (obtained locally, if necessary) to insulate you from grounds such as
metal floor strips and machine frames.
Obser e the special safety precautions when you work with ery high oltages; Instructions for these
precautions are in the safety sections of maintenance information. Use extreme care when measuring high
oltages.
• Regularly inspect and maintain your electrical hand tools for safe operational condition.
• Do not use worn or broken tools and testers.
• Never assume that power has been disconnected from a circuit. First, check that it has been powered off.
• Always look carefully for possible hazards in your work area. Examples of these hazards are moist floors,
non-grounded power extension cables, power surges, and missing safety grounds.
• Do not touch li e electrical circuits with the reflecti e surface of a plastic dental mirror. The surface is
conducti e; such touching can cause personal injury and machine damage.
• Do not ser ice the following parts with the power on when they are remo ed from their normal operating
places in a machine:
– Power supply units
– Pumps
– Blowers and fans
– Motor generators
– Similar units as listed abo e
This practice ensures correct grounding of the units.
• If an electrical accident occurs:
– Use caution; do not become a ictim yourself.
– Switch off power.
– Send another person to get medical aid.
S fety inspection guide
The purpose of this inspection guide is to assist you in identifying potentially unsafe conditions. As each
machine was designed and built, required safety items were installed to protect users and ser ice
technicians from injury. This guide addresses only those items. You should use good judgment to identify
potential safety hazards due to attachment of non-Leno o features or options not co ered by this inspection
guide.
If any unsafe conditions are present, you must determine how serious the apparent hazard could be and
whether you can continue without first correcting the problem.
Consider these conditions and the safety hazards they present:
• Electrical hazards, especially primary power (primary oltage on the frame can cause serious or fatal
electrical shock)
• Explosi e hazards, such as a damaged cathode ray tube (CRT) face or a bulging capacitor
• Mechanical hazards, such as loose or missing hardware
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To determine whether there are any potentially unsafe conditions, use the following checklist at the
beginning of e ery ser ice task. Begin the checks with the power off, and the power cord disconnected.
Checklist:
1. Check exterior co ers for damage (loose, broken, or sharp edges).
2. Power off the computer. Disconnect the power cord.
3. Check the power cord for:
a. A third-wire ground connector in good condition. Use a meter to measure third-wire ground
continuity for 0.1 ohm or less between the external ground pin and the frame ground.
b. The power cord should be the authorized type specified for your computer. Go to: http://
www.leno o.com/ser iceparts-lookup
c. Insulation must not be frayed or worn.
4. Check for cracked or bulging batteries.
5. Remo e the co er.
6. Check for any ob ious non-Leno o alterations. Use good judgment as to the safety of any non-Leno o
alterations.
7. Check inside the unit for any ob ious unsafe conditions, such as metal filings, contamination, water or
other liquids, or signs of fire or smoke damage.
8. Check for worn, frayed, or pinched cables.
9. Check that the power-supply co er fasteners (screws or ri ets) ha e not been remo ed or tampered
with.
H ndling devices th t re sensitive to electrost tic disch rge
Any computer part containing transistors or integrated circuits (ICs) should be considered sensiti e to
electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects.
Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the
person handling the part are all at the same charge.
Notes:
1. Use product-specific ESD procedures when they exceed the requirements noted here.
2. Make sure that the ESD protecti e de ices you use ha e been certified (ISO 9000) as fully effecti e.
When handling ESD-sensiti e parts:
• Keep the parts in protecti e packages until they are inserted into the product.
• A oid contact with other people.
• Wear a grounded wrist strap against your skin to eliminate static on your body.
• Pre ent the part from touching your clothing. Most clothing is insulati e and retains a charge e en when
you are wearing a wrist strap.
• Use a grounded work mat to pro ide a static-free work surface. The mat is especially useful when
handling ESD-sensiti e de ices.
• Select a grounding system, such as those listed below, to pro ide protection that meets the specific
ser ice requirement.
Note: The use of a grounding system to guard against ESD damage is desirable but not necessary.
– Attach the ESD ground clip to any frame ground, ground braid, or green-wire ground.
– When working on a double-insulated or battery-operated system, use an ESD common ground or
reference point. You can use coax or connector-outside shells on these systems.
– Use the round ground prong of the ac plug on ac-operated computers.
Chapter 1.Safety information 3

Grounding requirements
Electrical grounding of the computer is required for operator safety and correct system function. Proper
grounding of the electrical outlet can be erified by a certified electrician.
S fety notices (multilingu l tr nsl tions)
The safety notices in this section are pro ided in the following languages:
• English
• Arabic
• Brazilian Portuguese
• French
• German
• Hebrew
• Japanese
• Korean
• Spanish
• Traditional Chinese
DANGER
DANGER
DANGER
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DANGER
DANGER
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DANGER
Chapter 1.Safety information 5

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PERIGO
PERIGO
PERIGO
Chapter 1.Safety information 7

PERIGO
PERIGO
PERIGO
PERIGO
PERIGO
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DANGER
DANGER
DANGER
DANGER
Chapter 1.Safety information 9

DANGER
DANGER
DANGER
DANGER
VORSICHT
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VORSICHT
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Chapter 1.Safety information 11

VORSICHT
VORSICHT
VORSICHT
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Chapter 1.Safety information 13

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