Lenovo IdeaPad 5i Owner's manual

Hardware Maintenance Manual
IdeaPad 5i (14″, 7), IdeaPad 5 (14″, 7), IdeaPad 5i (15″, 7) and IdeaPad
5 (15″, 7)

First Edition (March 2022)
© Copyright Lenovo 2022.

Contents
About this manua . . . . . . . . . . . . iii
Chapter 1. Safety information . . . . . . 1
General safety . . . . . . . . . . . . . . . . 1
Electrical safety . . . . . . . . . . . . . . . . 1
Safety inspecti n guide . . . . . . . . . . . . . 2
Handling devices that are sensitive t electr static
discharge . . . . . . . . . . . . . . . . . . 3
Gr unding requirements . . . . . . . . . . . . 4
Safety n tices (multilingual translati ns) . . . . . . 4
Chapter 2. Genera checkout . . . . . 21
What t d first . . . . . . . . . . . . . . . 21
CRU list . . . . . . . . . . . . . . . . . . 22
Chapter 3. Identifying FRUs
(CRUs) . . . . . . . . . . . . . . . . . 23
L cate FRUs and CRUs . . . . . . . . . . . 23
Chapter 4. Removing a FRU or
CRU . . . . . . . . . . . . . . . . . . 33
Service t ls . . . . . . . . . . . . . . . . 33
General guidelines. . . . . . . . . . . . . . 33
Rem val pr cedure f r 14-inch m dels . . . . . 34
Rem ve the l wer case . . . . . . . . . . 34
Rem ve the battery pack . . . . . . . . . 35
Rem ve the s lid-state drive (SSD) m dule . . 36
Rem ve the Wi-Fi card . . . . . . . . . . 37
Rem ve the heat sink. . . . . . . . . . . 38
Rem ve the fan . . . . . . . . . . . . . 39
Rem ve the speakers. . . . . . . . . . . 40
Rem ve the I/O b ard . . . . . . . . . . 40
Rem ve the fingerprint b ard with cable . . . 42
Rem ve the system b ard and the I/O b ard
cable . . . . . . . . . . . . . . . . . 43
Rem ve the LCD m dule . . . . . . . . . 45
Rem ve the upper case . . . . . . . . . . 46
Disassemble the LCD m dule . . . . . . . 46
Rem val pr cedure f r 15-inch m dels . . . . . 51
Rem ve the l wer case . . . . . . . . . . 51
Rem ve the battery pack . . . . . . . . . 52
Rem ve the s lid-state drive (SSD) m dule . . 53
Rem ve the hard disk drive (HDD) m dule . . 54
Rem ve the Wi-Fi card . . . . . . . . . . 56
Rem ve the heat sink. . . . . . . . . . . 56
Rem ve the fan . . . . . . . . . . . . . 57
Rem ve the speaker . . . . . . . . . . . 58
Rem ve the CMOS battery . . . . . . . . 59
Rem ve the I/O b ard and the I/O b ard
cable . . . . . . . . . . . . . . . . . 59
Rem ve the fingerprint b ard and fingerprint
b ard cable . . . . . . . . . . . . . . 61
Rem ve the system b ard . . . . . . . . . 62
Rem ve the LCD m dule . . . . . . . . . 64
Rem ve the upper case . . . . . . . . . . 65
Disassemble the LCD m dule . . . . . . . 65
Appendix A. Labe ocations. . . . . . 71
Trademarks . . . . . . . . . . . . . . . . lxxiii
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ii Hardware Maintenance Manual

About this manua
This manual c ntains service and reference inf rmati n f r the f ll wing Len v pr ducts.
Mode name Machine type (MT)
IdeaPad 5 14IAL7 82SD
IdeaPad 5 14ABA7 82SE
IdeaPad 5 15IAL7 82SF
IdeaPad 5 15ABA7 82SG
Important:
• This manual is intended nly f r trained service technicians wh are familiar with Len v pr ducts.
• Bef re servicing a Len v pr duct, be sure t read all the inf rmati n under Chapter 1 “Safety
inf rmati n” n page 1.
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iv Hardware Maintenance Manual

Chapter 1. Safety information
This chapter presents the f ll wing safety inf rmati n that y u need t be familiar with bef re y u service a
Len v n teb k c mputer.
Genera safety
F ll w these rules t ensure general safety:
• Observe g d h usekeeping in the area f the machines during and after maintenance.
• When lifting any heavy bject:
1. Make sure that y u can stand safely with ut slipping.
2. Distribute the weight f the bject equally between y ur feet.
3. Use a sl w lifting f rce. Never m ve suddenly r twist when y u attempt t lift.
4. Lift by standing r by pushing up with y ur leg muscles; this acti n rem ves the strain fr m the
muscles in y ur 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.
• D n t perf rm any acti n that causes hazards t the cust mer, r that makes the equipment unsafe.
• Bef re y u start the machine, make sure that ther service technicians and the cust mer's pers nnel are
n t in a hazard us p siti n.
• Place rem ved c vers and ther parts in a safe place, away fr m all pers nnel, while y u are servicing the
machine.
• Keep y ur t l case away fr m walk areas s that ther pe ple will n t trip ver it.
• D n t wear l se cl thing that can be trapped in the m ving parts f a machine. Make sure that y ur
sleeves are fastened r r lled up ab ve y ur elb ws. If y ur hair is l ng, fasten it.
• Insert the ends f y ur necktie r scarf inside cl thing r fasten it with a n n-c nductive clip, ab ut 8
centimeters (3 inches) fr m the end.
• D n t wear jewelry, chains, metal-frame eyeglasses, r metal fasteners f r y ur cl thing.
Attention: Metal bjects are g d electrical c nduct rs.
• Wear safety glasses when y u are hammering, drilling, s ldering, cutting wire, attaching springs, using
s lvents, r w rking in any ther c nditi ns that might be hazard us t y ur eyes.
• After service, reinstall all safety shields, guards, labels, and gr und wires. Replace any safety device that
is w rn r defective.
• Reinstall all c vers c rrectly bef re returning the machine t the cust mer.
• Fan l uvers n the machine help t prevent verheating f internal c mp nents. D n t bstruct fan
l uvers r c ver them with labels r stickers.
E ectrica safety
Observe the f ll wing rules when w rking n electrical equipment.
Important: Use nly appr ved t ls and test equipment. S me hand t ls have handles c vered with a s ft
material that d es n t insulate y u when w rking with live electrical currents.Many cust mers have, near
their equipment, rubber fl r mats that c ntain small c nductive fibers t decrease electr static discharges.
D n t use this type f mat t pr tect y urself fr m electrical sh ck.
• Find the r m emergency p wer- ff (EPO) switch, disc nnecting switch, r electrical utlet. If an electrical
accident ccurs, y u can then perate the switch r unplug the p wer c rd quickly.
• D n t w rk al ne under hazard us c nditi ns r near equipment that has hazard us v ltages.
• Disc nnect all p wer bef re:
– Perf rming a mechanical inspecti n
– W rking near p wer supplies
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– Rem ving r installing main units
• Bef re y u start t w rk n the machine, unplug the p wer c rd. If y u cann t unplug it, ask the cust mer
t p wer- ff the wall b x that supplies p wer t the machine, and t l ck the wall b x in the ff p siti n.
• If y u need t w rk n a machine that has e posed electrical circuits, bserve the f ll wing precauti ns:
– Ensure that an ther pers n, familiar with the p wer- ff c ntr ls, is near y u.
Attention: An ther pers n must be there t switch ff the p wer, if necessary.
– Use nly ne hand when w rking with p wered- n electrical equipment; keep the ther hand in y ur
p cket r behind y ur back.
Attention: An electrical sh ck can ccur nly when there is a c mplete circuit. By bserving the ab ve
rule, y u may prevent a current fr m passing thr ugh y ur b dy.
– When using testers, set the c ntr ls c rrectly and use the appr ved pr be leads and access ries f r
that tester.
– Stand n suitable rubber mats ( btained l cally, if necessary) t insulate y u fr m gr unds such as
metal fl r strips and machine frames.
Observe the special safety precauti ns when y u w rk with very high v ltages; Instructi ns f r these
precauti ns are in the safety secti ns f maintenance inf rmati n. Use extreme care when measuring high
v ltages.
• Regularly inspect and maintain y ur electrical hand t ls f r safe perati nal c nditi n.
• D n t use w rn r br ken t ls and testers.
• Never assume that p wer has been disc nnected fr m a circuit. First, check that it has been p wered ff.
• Always l k carefully f r p ssible hazards in y ur w rk area. Examples f these hazards are m ist fl rs,
n n-gr unded p wer extensi n cables, p wer surges, and missing safety gr unds.
• D n t t uch live electrical circuits with the reflective surface f a plastic dental mirr r. The surface is
c nductive; such t uching can cause pers nal injury and machine damage.
• D n t service the f ll wing parts with the power on when they are rem ved fr m their n rmal perating
places in a machine:
– P wer supply units
– Pumps
– Bl wers and fans
– M t r generat rs
– Similar units as listed ab ve
This practice ensures c rrect gr unding f the units.
• If an electrical accident ccurs:
– Use cauti n; d n t bec me a victim y urself.
– Switch ff p wer.
– Send an ther pers n t get medical aid.
Safety inspection guide
The purp se f this inspecti n guide is t assist y u in identifying p tentially unsafe c nditi ns. As each
machine was designed and built, required safety items were installed t pr tect users and service
technicians fr m injury. This guide addresses nly th se items. Y u sh uld use g d judgment t identify
p tential safety hazards due t attachment f n n-Len v features r pti ns n t c vered by this inspecti n
guide.
If any unsafe c nditi ns are present, y u must determine h w seri us the apparent hazard c uld be and
whether y u can c ntinue with ut first c rrecting the pr blem.
C nsider these c nditi ns and the safety hazards they present:
• Electrical hazards, especially primary p wer (primary v ltage n the frame can cause seri us r fatal
electrical sh ck)
• Expl sive hazards, such as a damaged cath de ray tube (CRT) face r a bulging capacit r
• Mechanical hazards, such as l se r missing hardware
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T determine whether there are any p tentially unsafe c nditi ns, use the f ll wing checklist at the
beginning f every service task. Begin the checks with the p wer ff, and the p wer c rd disc nnected.
Checklist:
1. Check exteri r c vers f r damage (l se, br ken, r sharp edges).
2. P wer ff the c mputer. Disc nnect the p wer c rd.
3. Check the p wer c rd f r:
a. A third-wire gr und c nnect r in g d c nditi n. Use a meter t measure third-wire gr und
c ntinuity f r 0.1 hm r less between the external gr und pin and the frame gr und.
b. The p wer c rd sh uld be the auth rized type specified f r y ur c mputer. G t : http://
www.len v .c m/serviceparts-l kup
c. Insulati n must n t be frayed r w rn.
4. Check f r cracked r bulging batteries.
5. Rem ve the c ver.
6. Check f r any bvi us n n-Len v alterati ns. Use g d judgment as t the safety f any n n-Len v
alterati ns.
7. Check inside the unit f r any bvi us unsafe c nditi ns, such as metal filings, c ntaminati n, water r
ther liquids, r signs f fire r sm ke damage.
8. Check f r w rn, frayed, r pinched cables.
9. Check that the p wer-supply c ver fasteners (screws r rivets) have n t been rem ved r tampered
with.
Hand ing devices that are sensitive to e ectrostatic discharge
Any c mputer part c ntaining transist rs r integrated circuits (ICs) sh uld be c nsidered sensitive t
electr static discharge (ESD). ESD damage can ccur when there is a difference in charge between bjects.
Pr tect against ESD damage by equalizing the charge s that the machine, the part, the w rk mat, and the
pers n handling the part are all at the same charge.
Notes:
1. Use pr duct-specific ESD pr cedures when they exceed the requirements n ted here.
2. Make sure that the ESD pr tective devices y u use have been certified (ISO 9000) as fully effective.
When handling ESD-sensitive parts:
• Keep the parts in pr tective packages until they are inserted int the pr duct.
• Av id c ntact with ther pe ple.
• Wear a gr unded wrist strap against y ur skin t eliminate static n y ur b dy.
• Prevent the part fr m t uching y ur cl thing. M st cl thing is insulative and retains a charge even when
y u are wearing a wrist strap.
• Use a gr unded w rk mat t pr vide a static-free w rk surface. The mat is especially useful when
handling ESD-sensitive devices.
• Select a gr unding system, such as th se listed bel w, t pr vide pr tecti n that meets the specific
service requirement.
Note: The use f a gr unding system t guard against ESD damage is desirable but n t necessary.
– Attach the ESD gr und clip t any frame gr und, gr und braid, r green-wire gr und.
– When w rking n a d uble-insulated r battery- perated system, use an ESD c mm n gr und r
reference p int. Y u can use c ax r c nnect r- utside shells n these systems.
– Use the r und gr und pr ng f the ac plug n ac- perated c mputers.
Chapter 1.Safety inf rmati n 3

Grounding requirements
Electrical gr unding f the c mputer is required f r perat r safety and c rrect system functi n. Pr per
gr unding f the electrical utlet can be verified by a certified electrician.
Safety notices (mu ti ingua trans ations)
The safety n tices in this secti n are pr vided in the f ll wing languages:
• English
• Arabic
• Brazilian P rtuguese
• French
• German
• Hebrew
• Japanese
• K rean
• Spanish
• Traditi nal Chinese
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