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Hardware Maintenance Manual

Lenovo Legion BoostStation

First Edition (August 2020)

Contents
About this manual . . . . . . . . . . . .iii
Chapter 1. Safety information . . . . . . 1
General safety .	. .	. . . . .	. .	.	. . . .	. 1
Electrical safety .	. .	. . . . .	. .	.	. . . .	. 1

Safety inspection guide . . . . . . . . . . . . . 2

Handling devices that are sensitive to electrostatic
discharge . . . . . .	. . . . . . . . . . .	.	3
Grounding requirements	. . . . . . . . . . .	.	3

Safety notices (multilingual translations) . . . . . . 4

Chapter 2.	General checkout . . . . .	. 9
What to do first . . . . . . . . . . . . . . .		. 9
CRU list . . . . . . . . . . . . . . . . . .		10
Chapter 3.	Identifying FRUs

(CRUs) . . . . . . . . . . . . . . . . . 11

Locate FRUs and CRUs . . . . . . . . . . .	11
Chapter 4. Removing an FRU or
CRU . . . . . . . . . . . . . . . . . .	15

Service tools . . . . . . . . . . . . . . . .	15
General guidelines. . . . . . . . . . . . . .	15
Remove the dock . . . . . . . . . . . . . .	16
Remove the LED cable . . . . . . . . . . . .	16
Remove the LED board . . . . . . . . . . . .	17
Remove the converter board . . . . . . . . .	18
Remove the power board with cable. . . . . . .	18
Remove the fan . . . . . . . . . . . . . . .	19
Remove the hard disk drive (HDD) cable . . . . .	20

Remove the hard disk drive (HDD) holder . . . . . 21

Remove the graphics card bracket . . . . . . .	22
Remove the graphics card . . . . . . . . . .	23
Remove the MID support bracket . . . . . . . .	23
Remove the power supply fix bracket . . . . . .	24
Remove the power supply. . . . . . . . . . .	25
Remove the Type-C bracket . . . . . . . . . .	26
Remove the system board. . . . . . . . . . .	27
Remove the slide plate . . . . . . . . . . . .	28
Trademarks . . . . . . . . . . . . . . . .	xxxi

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About this manual

This manual contains service and reference information for the following Lenovo products.

Machine	Machine type (MT)
Lenovo Legion GPU Dock	82CA

Important:

•This manual is intended only for trained service technicians who are familiar with Lenovo products.

•Before servicing a Lenovo product, be sure to read all the information under Chapter 1 “Safety information” on page 1.

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Chapter 1. Safety information

This chapter presents the following safety information that you need to be familiar with before you service a Lenovo dock.

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 tool case 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 non-conductive 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 solvents, or working in any other conditions that might be hazardous to your eyes.

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

•Reinstall all covers correctly before returning the machine to the customer.

•Fan louvers on the machine help to prevent overheating of internal components. Do not obstruct fan louvers or cover them with labels or stickers.

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 unplug 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 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 exposed electrical circuits, observe 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 observing the above rule, you may prevent a current from passing through your body.

–When using testers, set the controls correctly and use the approved 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.

Observe the special safety precautions when you work with very high voltages; Instructions for these precautions are in the safety sections of maintenance information. Use extreme care when measuring high voltages.

•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 live electrical circuits with the reflective surface of a plastic dental mirror. The surface is conductive; such touching can cause personal injury and machine damage.

•Do not service the following parts with the power on when they are removed from their normal operating places in a machine:

–Power supply units

–Pumps

–Blowers and fans

–Motor generators

–Similar units as listed above

This practice ensures correct grounding of the units.

•If an electrical accident occurs:

–Use caution; do not become a victim yourself.

–Switch off power.

–Send another person to get medical aid.

Safety 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 service technicians from injury. This guide addresses only those items. You should use good judgment to identify potential safety hazards due to attachment of non-Lenovo features or options not covered 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 voltage on the frame can cause serious or fatal electrical shock)

•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 every service task. Begin the checks with the power off, and the power cord disconnected.

Checklist:

1.Check exterior covers for damage (loose, broken, or sharp edges).

2.Power off the dock. 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 dock. Go to: http://www.lenovo.com/ serviceparts-lookup

c.Insulation must not be frayed or worn.

4.Remove the cover.

5.Check for any obvious non-Lenovo alterations. Use good judgment as to the safety of any non-Lenovo alterations.

6.Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.

7.Check for worn, frayed, or pinched cables.

8.Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with.

Handling devices that are sensitive to electrostatic discharge

Any dock part containing transistors or integrated circuits (ICs) should be considered sensitive 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 protective devices you use have been certified (ISO 9000) as fully effective.

When handling ESD-sensitive parts:

•Keep the parts in protective packages until they are inserted into the product.

•Avoid contact with other people.

•Wear a grounded wrist strap against your skin to eliminate static on your body.

•Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even when you are wearing a wrist strap.

•Use a grounded work mat to provide a static-free work surface. The mat is especially useful when handling ESD-sensitive devices.

•Select a grounding system, such as those listed below, to provide protection that meets the specific service 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.

Grounding requirements

Electrical grounding of the dock is required for operator safety and correct system function. Proper grounding of the electrical outlet can be verified by a certified electrician.

Chapter 1. Safety information 3

Safety notices (multilingual translations)

The safety notices in this section are provided in the following languages:

•English

•Arabic

•Brazilian Portuguese

•French

•German

•Hebrew

•Japanese

•Korean

•Spanish

•Traditional Chinese

DANGER

Before the dock is powered on after FRU replacement, make sure that all screws, springs, and other small parts are in place and are not left loose inside the dock. Verify this by shaking the dock and listening

for rattling sounds. Metallic parts or metal flakes can cause electrical short circuits.

DANGER

Unless hot swap is allowed for the FRU being replaced, do as follows before removing it: power off the dock, unplug all power cords from electrical outlets and disconnect any interconnecting cables.

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Lenovo Legion BoostStation Hardware Maintenance Manual

PERIGO

Antes de ligar a doca após a substituição da FRU, certifique-se de que todos os parafusos, molas e outras peças pequenas estejam no lugar e não estejam soltos dentro da doca. Verifique isso sacudindo a doca e procurando ouvir sons de peças soltas. Peças metálicas ou lascas de metal podem causar curto-circuito.

PERIGO

A menos que uma hot swap seja permitida para a FRU que está sendo substituída, faça o seguinte antes de removê-la: desligue a doca, desconecte todos os cabos de energia das tomadas e desconecte quaisquer cabos de interconexão.

DANGER

Avant de remettre le quai sous tension après remplacement d'une unité en clientèle, vérifiez que tous les ressorts, vis et autres pièces sont bien en place et bien fixées. Pour ce faire, secouez le quai et assurez-vous qu'aucun brui t suspect ne se produit. Des pièces métalliques ou des copeaux de métal pourraient causer un court-circuit.

DANGER

Si le remplacement à chaud n'est pas autorisé pour l'unité emplaçable sur site que vous remplacez, procédez comme suit avant de retirer l'unité : mettez le quai hors tension, débranchez tous les cordons d'alimentation des prises de courant et déconnectez tous les câbles d'interconnexion.

VORSICHT

Bevor nach einem FRU-Austausch das Dock wieder angeschlossen wird, muß sichergestellt werden, daß keine Schrauben, Federn oder andere Kleinteile fehlen oder im Dock vergessen wurden. Das Dock muß geschüttelt und auf Klappergeräusche geprüft werden. Metallteile oder-splitter können Kurzschlüsse erzeugen.

VORSICHT

Chapter 1. Safety information 5

Wenn ein Austausch der FRU bei laufendem Betrieb nicht erlaubt ist, gehen Sie beim Austausch der FRU wie folgt vor: Schalten Sie das Dock aus, ziehen Sie alle Netzkabel von den Netzsteckdosen ab und ziehen Sie alle miteinander verbundenen Kabel ab.

íéøçà íéðè÷ íé÷ìçå ,íéöéô÷ä ,íéâøëç ìëù àãååì FRU çèùä øçàì áùçîä úìòôä éðôì áéù÷äìå çèù úà ìèìèì ùé ,úàæ àãååì éãë .çèùä êåúá æåæì íééùôåç íðéàå íîå÷îá íéàöîð

.íÖìîùç íéøö÷ì íåøâì íéìïìò úëúî éááù åà é÷ìç .÷åù÷ù úåìå÷ éåìéâì

:åúøñä éðôì ïìçìãë åìòô ,óìçåîä FRU-ä ìù éäîç äôìçäé úøúåî ïë íà àìà

.íéøáåçîä íéìáëä ìë úà å÷úðå íéò÷ùäî ìîùç éìáë ìë úà å÷úð ,çèùä úà åáë

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