Hardware Maintenance Manual - Lenovo M4400s
Table Of Contents
- About this manual
- Chapter 1. Safety information
- Chapter 2. General checkout
- Chapter 3. Important service information
- Chapter 4. Status indicators
- Chapter 5. Fn key combinations
- Chapter 6. Locations
- Chapter 7. FRU replacement notices
- Chapter 8. Removing or replacing a FRU
- General guidelines
- 1010 Battery pack
- 1020 Bottom slot cover
- 1030 Memory modules
- 1040 Hard disk drive assembly
- 1050 PCI Express Mini Card for wireless LAN
- 1060 mSATA solid-state drive
- 1070 Backup battery
- 1080 Base cover
- 1090 Media card reader slot board
- 1110 Fingerprint board bracket and fingerprint board
- 1120 Thermal module assembly
- 1130 DC-in connector
- 1140 Power board
- 1150 System board assembly
- 1160 Touch pad assembly, speakers, keyboard bezel, and LCD unit
- 2010 LCD front bezel
- 2020 Camera and microphone board
- 2030 LCD panel, LCD cable, and hinges
- 2040 Antenna assembly and LCD rear cover
- Appendix A. Notices
Attention:Ifyouforgetthepassword,thereisnoserviceproceduretoresetthepassword.Thesystem
boardmustbereplacedforascheduledfee.
•Power-onpassword:Apower-onpasswordprotectsthecomputerfrombeingturnedonbyan
unauthorizedperson.Ifapower-onpasswordhasbeenset,theusermustenterthepasswordbefore
startingtheoperatingsystem.
•Supervisorpassword:AsupervisorpasswordprotectsthesysteminformationstoredintheBIOS
program.TheusermustenterthesupervisorpasswordtogetaccesstotheBIOSprogramandchange
systemcongurations.
Ifyouhavesetapassword,youwillbepromptedtoenterthepasswordwheneveryouturnonthecomputer.
Powermanagement
Therearethreepowermanagementmodestoreducepowerconsumption:screenblank,sleep,and
hibernation.
Screenblankmode
Inthefollowingcircumstances,thecomputerentersscreenblankmode:
•Thetimesetonthe“T urnoffmonitor”timerontheWindows7operatingsystemexpires.
Toendscreenblankmodeandresumenormaloperation,pressanykey.
•Y ouhavepressedFn+F2.
Toendscreenblankmodeandresumenormaloperation,pressFn+F2.
Sleepmode
Whenthecomputerenterssleepmode,thefollowingeventsoccurinadditiontowhatoccursinscreen
blankmode:
•TheLCDispoweredoff.
•Theharddiskdriveispoweredoff.
•Themicroprocessorstops.
Toentersleepmode,pressFn+F1.
Incertaincircumstances,thecomputerautomaticallyenterssleepmode:
•A“suspendtime”hasbeensetonthetimer,andtheuserdoesnotdoanyoperationwiththekeyboard,
theharddiskdrive,theparallelconnector,orthediskettedrivewithinthattime.
•Thebatterystatusindicatorblinksorange,indicatingthatthebatterypowerislow.
Tocausethecomputertoreturnfromsleepmodeandresumetheoperation,dooneofthefollowing:
•PresstheFnkey.
•OpentheLCDcover.
•Pressthepowerbutton.
Also,whenthetimesetontheresumetimerelapses,thecomputerautomaticallyreturnsfromsleepmode
andresumesoperation.
Note:Thecomputerdoesnotacceptanyinputimmediatelyafteritenterssleepmode.Waitafewseconds
beforetakinganyactionstoreenteroperationmode.
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