Lenovo Legion Y740S-15IMH, Hardware Maintenance Manual

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• Damage caused by the improper insertion of a personal-computer card (PC card) or the installation of an
incompatible card
• Improper disc insertion or use of an external optical drive
• Fuses blown by attachment of a non-supported device
• Forgotten computer password (making the computer unusable)
• Sticky keys caused by spilling a liquid onto the keyboard
• Use of an incorrect ac power adapter on laptop products
The following symptoms might indicate damage caused by non-warranted activities:
• Missing parts might be a symptom of unauthorized service or modification.
• Check for obvious damage to a hard disk drive. If the spindle of a hard disk drive becomes noisy, the hard
disk drive might have been dropped or subject to excessive force.
CRU list
Table 1. Model: Lenovo Legion Y740S-15IRH & Lenovo Legion Y740S-15IMH (Machine type: 81QA & 81YX)
CRU
Type
ac power adapter self-service
power cord self-service
22
Lenovo Legion Y740S-15IRH Lenovo Legion Y740S-15IMH Hardware Maintenance Manual