Lenovo ThinkCentre M725s User Manual And Hardware Maintenance Manual Download Page 3

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Contents

Chapter 1. Overview . . . . . . . . . . . 1

Front view . . . . . . . . . . . . . . . . . . 1
Rear view . . . . . . . . . . . . . . . . . . 3
System board

. . . . . . . . . . . . . . . . 5

Machine type and model label . . . . . . . . . . 6

Chapter 2. Specifications . . . . . . . . 7

Chapter 3. Computer locks . . . . . . . 9

Chapter 4. Replacing hardware . . . . 11

Before replacing hardware

. . . . . . . . . . 11

. . . . . . . . . . . . . . . . . . 27

. . . . 50

Replacing the microprocessor .  .  .  .  .  .  .  .  .  52
Replacing a PCI Express card .  .  .  .  .  .  .  .  .  54
Replacing the cover presence switch .  .  .  .  .  .  56
Replacing the power supply assembly .  .  .  .  .  .  57
Replacing the system board .  .  .  .  .  .  .  .  .  .  59
Completing the parts replacement .  .  .  .  .  .  .  60

Appendix A. Notices . . . . . . . . . . 63

Appendix B. Trademarks . . . . . . . 65

Summary of Contents for ThinkCentre M725s

Page 1: ...M725s User Guide and Hardware Maintenance Manual Energy Star Machine Types 10VT 10VU 10VV and 10VX ...

Page 2: ...formation Guide and Appendix A Notices on page 63 First Edition July 2018 Copyright Lenovo 2018 LIMITED AND RESTRICTED RIGHTS NOTICE If data or software is delivered pursuant to a General Services Administration GSA contract use reproduction or disclosure is subject to restrictions set forth in Contract No GS 35F 05925 ...

Page 3: ...placing the power button board and the card reader 27 Replacing the illuminated red dot 31 Replacing the internal speaker 33 Replacing the thermal sensor 35 Replacing the Wi Fi card 38 Replacing the Wi Fi antennas 40 Replacing the M 2 solid state drive 42 Replacing the M 2 solid state drive bracket 45 Replacing the coin cell battery 46 Replacing a memory module 48 Replacing the heat sink and fan a...

Page 4: ...ii M725s User Guide and Hardware Maintenance Manual ...

Page 5: ...1 Optical drive eject button 2 Optical drive activity indicator 3 Storage drive activity indicator 4 Card reader slot optional 5 Power button 6 Power indicator 7 Microphone connector 8 Headphone connector 9 USB 3 1 Gen 2 connectors 2 10 USB 3 1 Gen 1 connectors 2 11 Illuminated red dot 12 Internal speaker optional 1 Optical drive eject button Used to eject the tray of the optical drive Copyright L...

Page 6: ... want to record sound or interact with the computer using speech recognition software 8 Headphone connector Used to connect headphones to your computer 9 USB 3 1 Gen 2 connector Used to connect a USB compatible device For optimal data transfer connect a USB 3 1 Gen 2 device to a USB 3 1 Gen 2 connector instead of a USB 3 1 Gen 1 or USB 2 0 connector 10 USB 3 1 Gen 1 connector Used to connect a USB...

Page 7: ...onnector 7 Audio line out connector 8 Audio line in connector 9 Serial connector 10 Ethernet connector 11 PS 2 mouse connector 12 Security lock slot 13 Padlock loop 14 PCI Express card area 15 Smart cable clip slots 2 optional 16 Power cord connector 1 Microphone connector Used to connect a microphone to your computer when you want to record sound or interact with the computer using speech recogni...

Page 8: ...between the audio line in connector of the device and the audio line out connector of the computer Note If your computer has both an audio line out connector and a headset or headphone connector always use the headset or headphone connector for earphones headphones or a headset The headphone connector does not support headset microphones 8 Audio line in connector Used to receive audio signals from...

Page 9: ...view and Rear view for additional component descriptions Figure 3 System board 1 4 pin power connector 2 Microprocessor fan connector 3 Internal speaker connector 4 Storage drive activity indicator 5 Power button board connector 6 SATA power connectors 2 7 10 pin power connector 8 Clear CMOS Recovery jumper 9 SATA 3 0 connectors 3 10 Auxiliary fan connector 1 11 Illuminated red dot connector 12 Th...

Page 10: ... Wi Fi card slot 30 Cover presence switch connector intrusion switch connector Machine type and model label The machine type and model label identifies the computer When you contact Lenovo for help the machine type and model information helps support technicians to identify the computer and provide faster service The machine type and model label is attached to the computer as shown Figure 4 Machin...

Page 11: ... The integrated audio card supports the following Audio line in connector Audio line out connector Headphone connector Internal speaker optional Microphone connector The optional discrete audio card provides an enhanced audio experience and extended capabilities Input Output I O features Audio connectors audio line in audio line out headphone and microphone Card reader slot optional Display connec...

Page 12: ... LAN optional Bluetooth optional Physical dimensions Width 92 5 mm 3 6 inches Height 343 5 mm 13 5 inches Depth 290 5 mm 11 4 inches Weight without the package Maximum configuration as shipped 6 0 kg 13 2 lb 8 M725s User Guide and Hardware Maintenance Manual ...

Page 13: ...le lock to secure your computer to a desk table or another nonpermanent fixture The cable lock connects to the security lock slot at the rear of your computer Depending on the type selected the cable lock can be operated with a key or a combination The cable lock also locks the buttons used to open the computer cover This is the same type of lock used with many notebook computers You can order suc...

Page 14: ... to the cable lock slots on the rear of the computer To install a smart cable clip do the following 1 Insert the clip 1 into the cable lock slot 4 2 Pull the cables you want to lock through the dents in the smart cable clip 3 Press the clip 2 into the cable lock slot 3 until it snaps into position Figure 7 Attaching a smart cable clip 10 M725s User Guide and Hardware Maintenance Manual ...

Page 15: ...circuitry Prevent others from touching the options and other computer components Touch the static protective package containing the part to a metal expansion slot cover or other unpainted metal surface on the computer for at least two seconds This reduces static electricity from the package and your body before you install or replace a new part When possible remove the new part from the static pro...

Page 16: ...e an FRU only with another FRU of the correct model When you replace an FRU ensure that the model of the machine and the FRU part number are correct An FRU should not be replaced because of a single unreproducible failure Single failures can occur for a variety of reasons that have nothing to do with a hardware defect such as cosmic radiation electrostatic discharge or software errors Consider rep...

Page 17: ...y 5 Wi Fi card shield 3 Heat sink and fan assembly 8 Memory module 34 Power supply assembly 7 Microprocessor 10 M 2 solid state drive 9 System board 11 M 2 solid state drive bracket 14 Card reader 12 Secondary storage drive bracket 15 Power button board 13 Secondary storage drive a 2 5 inch storage drive 16 Front I O bracket Chapter 4 Replacing hardware 13 ...

Page 18: ...e switch intrusion switch 26 Primary storage drive bracket 27 Storage converter 32 Vertical stand 37 PCI Express card Replacing external options Attention Do not open your computer or attempt any repairs before reading the Important Product Information Guide 1 Remove any media from the drives and turn off all connected devices and the computer 2 Disconnect all power cords from electrical outlets a...

Page 19: ...Figure 10 Assembling the vertical stand Figure 11 Installing the vertical stand Dust shield Chapter 4 Replacing hardware 15 ...

Page 20: ...the external cables and power cords to the corresponding connectors on the computer Removing the computer cover Attention Do not open your computer or attempt any repairs before reading the Important Product Information Guide CAUTION 16 M725s User Guide and Hardware Maintenance Manual ...

Page 21: ...over 4 Remove external options See Replacing external options on page 14 5 Remove the computer cover Figure 14 Removing the computer cover 6 Complete the replacement See Completing the parts replacement on page 60 Replacing the front bezel Attention Do not open your computer or attempt any repairs before reading the Important Product Information Guide 1 Remove external options See Replacing extern...

Page 22: ...el 4 Complete the replacement See Completing the parts replacement on page 60 Replacing the optical drive Attention Do not open your computer or attempt any repairs before reading the Important Product Information Guide 18 M725s User Guide and Hardware Maintenance Manual ...

Page 23: ...the computer cover on page 16 3 Remove the front bezel See Replacing the front bezel on page 17 4 Disconnect the signal cable and the power cable from the optical drive 5 Replace the optical drive Figure 17 Removing the optical drive Figure 18 Removing the optical drive bracket Chapter 4 Replacing hardware 19 ...

Page 24: ...ting the drive bay assembly upward and downward Attention Do not open your computer or attempt any repairs before reading the Important Product Information Guide 1 Remove external options See Replacing external options on page 14 2 Remove the computer cover See Removing the computer cover on page 16 3 Remove the front bezel See Replacing the front bezel on page 17 4 Pivot the drive bay assembly up...

Page 25: ... the drive bay assembly upward Figure 22 Pivoting the drive bay assembly downward 5 Reinstall the removed parts To complete the replacement see Completing the parts replacement on page 60 Chapter 4 Replacing hardware 21 ...

Page 26: ...ve the front bezel See Replacing the front bezel on page 17 4 Pivot the drive bay assembly upward See Pivoting the drive bay assembly upward and downward on page 20 5 Disconnect the signal cable and the power cable from the storage drive 6 Replace the storage drive 2 5 inch or 3 5 inch primary storage drive Figure 23 Removing the primary storage drive bracket Figure 24 Removing the 3 5 inch primar...

Page 27: ...ep Figure 25 Removing the 2 5 inch primary storage drive from the storage converter Note If you replace the 3 5 inch primary storage drive skip this step Figure 26 Installing the 2 5 inch primary storage drive into the storage converter Chapter 4 Replacing hardware 23 ...

Page 28: ...27 Installing the 3 5 inch primary storage drive or storage converter Figure 28 Installing the primary storage drive bracket 2 5 inch secondary storage drive 24 M725s User Guide and Hardware Maintenance Manual ...

Page 29: ...oving the outer 2 5 inch secondary storage drive bracket Figure 30 Removing the inner 2 5 inch secondary storage drive bracket Figure 31 Removing the 2 5 inch secondary storage drive Chapter 4 Replacing hardware 25 ...

Page 30: ...Figure 32 Installing the 2 5 inch secondary storage drive Figure 33 Installing the inner 2 5 inch secondary storage drive bracket 26 M725s User Guide and Hardware Maintenance Manual ...

Page 31: ... board and the card reader Attention Do not open your computer or attempt any repairs before reading the Important Product Information Guide 1 Remove external options See Replacing external options on page 14 2 Remove the computer cover See Removing the computer cover on page 16 3 Remove the front bezel See Replacing the front bezel on page 17 4 Disconnect the power button board cable and the card...

Page 32: ...Figure 35 Removing the front I O bracket Figure 36 Removing the power button board Figure 37 Removing the card reader bracket 28 M725s User Guide and Hardware Maintenance Manual ...

Page 33: ...Figure 38 Removing the card reader Figure 39 Installing the card reader Chapter 4 Replacing hardware 29 ...

Page 34: ...Figure 40 Installing the card reader bracket Figure 41 Installing the power button board 30 M725s User Guide and Hardware Maintenance Manual ...

Page 35: ... attempt any repairs before reading the Important Product Information Guide 1 Remove external options See Replacing external options on page 14 2 Remove the computer cover See Removing the computer cover on page 16 3 Remove the front bezel See Replacing the front bezel on page 17 4 Pivot the drive bay assembly upward See Pivoting the drive bay assembly upward and downward on page 20 5 Disconnect t...

Page 36: ...Figure 43 Removing the illuminated red dot cover Figure 44 Removing the illuminated red dot Figure 45 Installing the illuminated red dot 32 M725s User Guide and Hardware Maintenance Manual ...

Page 37: ...rnal speaker Attention Do not open your computer or attempt any repairs before reading the Important Product Information Guide 1 Remove external options See Replacing external options on page 14 2 Remove the computer cover See Removing the computer cover on page 16 3 Remove the front bezel See Replacing the front bezel on page 17 4 Disconnect the internal speaker cable from the system board 5 Repl...

Page 38: ...Figure 48 Pivoting the drive bay assembly upward Figure 49 Removing the internal speaker 34 M725s User Guide and Hardware Maintenance Manual ...

Page 39: ...on page 60 Replacing the thermal sensor Attention Do not open your computer or attempt any repairs before reading the Important Product Information Guide 1 Remove external options See Replacing external options on page 14 2 Remove the computer cover See Removing the computer cover on page 16 3 Remove the front bezel See Replacing the front bezel on page 17 4 Disconnect the thermal sensor cable fro...

Page 40: ...5 Replace the thermal sensor Figure 52 Pressing the tab Figure 53 Pivoting the drive bay assembly upward 36 M725s User Guide and Hardware Maintenance Manual ...

Page 41: ...Figure 54 Removing the thermal sensor Figure 55 Installing the thermal sensor Chapter 4 Replacing hardware 37 ...

Page 42: ...y repairs before reading the Important Product Information Guide 1 Remove external options See Replacing external options on page 14 2 Remove the computer cover See Removing the computer cover on page 16 3 Remove the front bezel See Replacing the front bezel on page 17 4 Pivot the drive bay assembly upward See Pivoting the drive bay assembly upward and downward on page 20 5 Replace the Wi Fi card ...

Page 43: ...Figure 58 Disconnecting the Wi Fi antenna cables Figure 59 Removing the Wi Fi card Figure 60 Installing the Wi Fi card Figure 61 Connecting the Wi Fi antenna cables Chapter 4 Replacing hardware 39 ...

Page 44: ...ding the Important Product Information Guide 1 Remove external options See Replacing external options on page 14 2 Remove the computer cover See Removing the computer cover on page 16 3 Remove the front bezel See Replacing the front bezel on page 17 4 Disconnect the Wi Fi antenna cables from the Wi Fi card See Replacing the Wi Fi card on page 38 5 Replace the Wi Fi antennas Front Wi Fi antenna Fig...

Page 45: ...Figure 64 Installing the front Wi Fi antenna Rear Wi Fi antenna Figure 65 Removing the rear Wi Fi antenna Chapter 4 Replacing hardware 41 ...

Page 46: ... Product Information Guide 1 Remove external options See Replacing external options on page 14 2 Remove the computer cover See Removing the computer cover on page 16 3 Remove the front bezel See Replacing the front bezel on page 17 4 Pivot the drive bay assembly upward See Pivoting the drive bay assembly upward and downward on page 20 5 Depending on your computer model refer to one of the followin...

Page 47: ...Figure 68 Removing the M 2 solid state drive Figure 69 Installing the M 2 solid state drive Figure 70 Inserting the stopper Type 2 Chapter 4 Replacing hardware 43 ...

Page 48: ...Figure 71 Pulling out the stopper Figure 72 Removing the M 2 solid state drive Figure 73 Installing the M 2 solid state drive 44 M725s User Guide and Hardware Maintenance Manual ...

Page 49: ...n Guide 1 Remove external options See Replacing external options on page 14 2 Remove the computer cover See Removing the computer cover on page 16 3 Remove the front bezel See Replacing the front bezel on page 17 4 Pivot the drive bay assembly upward See Pivoting the drive bay assembly upward and downward on page 20 5 Remove the M 2 solid state drive See Replacing the M 2 solid state drive on page...

Page 50: ...or assignments configurations A coin cell battery keeps this information active when you turn off the computer The coin cell battery normally requires no charging or maintenance throughout its life however no coin cell battery lasts forever If the coin cell battery fails the date time and configuration information including passwords are lost An error message is displayed when you turn on the comp...

Page 51: ...Figure 77 Disengaging the latch Figure 78 Removing the coin cell battery Chapter 4 Replacing hardware 47 ...

Page 52: ...arts To complete the replacement see Completing the parts replacement on page 60 Replacing a memory module Attention Do not open your computer or attempt any repairs before reading the Important Product Information Guide Ensure that you follow the installation order for memory modules shown in the following figure 48 M725s User Guide and Hardware Maintenance Manual ...

Page 53: ...Removing the computer cover on page 16 3 Remove the front bezel See Replacing the front bezel on page 17 4 Pivot the drive bay assembly upward See Pivoting the drive bay assembly upward and downward on page 20 5 Replace a memory module Figure 81 Removing a memory module Chapter 4 Replacing hardware 49 ...

Page 54: ... be very hot Before you open the computer cover turn off the computer and wait several minutes until the computer is cool 1 Remove external options See Replacing external options on page 14 2 Remove the computer cover See Removing the computer cover on page 16 3 Remove the front bezel See Replacing the front bezel on page 17 4 Pivot the drive bay assembly upward See Pivoting the drive bay assembly...

Page 55: ...Figure 83 Removing the heat sink fan duct Figure 84 Removing the heat sink and fan assembly Chapter 4 Replacing hardware 51 ...

Page 56: ...em board 8 Pivot the drive bay assembly downward and reinstall the removed parts To complete the replacement see Completing the parts replacement on page 60 Replacing the microprocessor Attention Do not open your computer or attempt any repairs before reading the Important Product Information Guide 52 M725s User Guide and Hardware Maintenance Manual ...

Page 57: ...ward on page 20 5 Remove the heat sink and fan assembly See Replacing the heat sink and fan assembly on page 50 6 Record the cable routing and cable connections and then disconnect all cables from the system board See System board on page 5 7 Replace the microprocessor Notes Your microprocessor and socket might look different from the one illustrated Touch only the edges of the microprocessor Do n...

Page 58: ...rd and reinstall the removed parts To complete the replacement see Completing the parts replacement on page 60 Replacing a PCI Express card Attention Do not open your computer or attempt any repairs before reading the Important Product Information Guide 1 Remove external options See Replacing external options on page 14 2 Remove the computer cover See Removing the computer cover on page 16 54 M725...

Page 59: ... bay assembly upward and downward on page 20 5 Replace a PCI Express card Note If the card is held in place by a retaining latch press the latch as shown to disengage the latch Then gently remove the card from the slot Figure 91 Removing a PCI Express card Figure 92 Installing a PCI Express card Chapter 4 Replacing hardware 55 ...

Page 60: ...er or attempt any repairs before reading the Important Product Information Guide 1 Remove external options See Replacing external options on page 14 2 Remove the computer cover See Removing the computer cover on page 16 3 Disconnect the cover presence switch cable from the system board 4 Replace the cover presence switch Figure 93 Removing the cover presence switch 56 M725s User Guide and Hardware...

Page 61: ...mputer or attempt any repairs before reading the Important Product Information Guide Although there are no moving parts in the computer after the power cord has been disconnected the following warnings are required for your safety and proper Underwriters Laboratories UL certification CAUTION Hazardous moving parts Keep fingers and other body parts away CAUTION Never remove the cover on a power sup...

Page 62: ...cing external options on page 14 2 Remove the computer cover See Removing the computer cover on page 16 3 Remove the front bezel See Replacing the front bezel on page 17 4 Pivot the drive bay assembly upward See Pivoting the drive bay assembly upward and downward on page 20 5 Disconnect the power supply assembly cables from the system board 6 Replace the power supply assembly Figure 95 Removing th...

Page 63: ...d downward on page 20 6 Remove all memory modules See Replacing a memory module on page 48 7 Remove the heat sink and fan assembly See Replacing the heat sink and fan assembly on page 50 8 Remove the microprocessor See Replacing the microprocessor on page 52 9 Remove all PCI Express cards See Replacing a PCI Express card on page 54 10 Remove the Wi Fi card See Replacing the Wi Fi card on page 38 1...

Page 64: ...ent for all parts reinstall the computer cover and reconnect the cables 1 Ensure that all components have been reassembled correctly and that no tools or loose screws are left inside your computer 2 Ensure that the cables are routed correctly before reinstalling the computer cover Keep cables clear of the hinges and sides of the computer chassis to avoid interference when reinstalling the computer...

Page 65: ...e Replacing external options on page 14 5 Place the computer in an upright position 6 If a locking device is available use it to lock the computer 7 Reconnect the external cables and power cords to the corresponding connectors on the computer Chapter 4 Replacing hardware 61 ...

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Page 67: ...he publication Lenovo may make improvements and or changes in the products and or the programs described in this publication at any time without notice The products described in this document are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons The information contained in this document does not affect or change Leno...

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Page 69: ...es other countries or both Lenovo The Lenovo logo ThinkCentre The ThinkCentre logo DisplayPort and Mini DisplayPort are trademarks of the Video Electronics Standards Association Other company product or service names may be trademarks or service marks of others Copyright Lenovo 2018 65 ...

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