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Lenovo Legion Y720T, Hardware Maintenance Manual

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Contents

Chapter 1.  About this manual .  .  .  .  .  . 1

Important Safety Information.  .  .  .  .  .  .  .  .  .  .  1

Chapter 2.  Safety information .  .  .  .  .  . 3

General safety .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  3
Electrical safety .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  3
Safety inspection guide .  .  .  .  .  .  .  .  .  .  .  .  .  5
Handling electrostatic discharge-sensitive  
devices .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  5
Grounding requirements .  .  .  .  .  .  .  .  .  .  .  .  6
Safety notices .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  6

Chapter 3.  General information .  .  .  .  . 9

Specifications .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  9

Chapter 4.  General Checkout .  .  .  .  .  11

Chapter 5.  Using the Setup Utility.  .  .  13

Starting the Lenovo BIOS Setup Utility program .  .  13
Viewing and changing settings .  .  .  .  .  .  .  .  .  13
Using passwords .  .  .  .  .  .  .  .  .  .  .  .  .  .  13
Enabling or disabling a device .  .  .  .  .  .  .  .  .  15
Selecting a startup device .  .  .  .  .  .  .  .  .  .  .  16
Exiting the Lenovo BIOS Setup Utility program.  .  .  17

Chapter 6.  Symptom-to-FRU  
Index .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  19

Hard disk drive boot error .  .  .  .  .  .  .  .  .  .  .  19
Power Supply Problems .  .  .  .  .  .  .  .  .  .  .  19
Additional Service Information .  .  .  .  .  .  .  .  .  20
POST error codes .  .  .  .  .  .  .  .  .  .  .  .  .  .  20

Undetermined problems .  .  .  .  .  .  .  .  .  .  .  20

Chapter 7.  Locations .  .  .  .  .  .  .  .  .  23

Identifying internal components

.  .  .  .  .  .  .  .  23

Identifying parts on the system board .  .  .  .  .  .  24

Chapter 8.  Replacing hardware .  .  .  .  27

General information .  .  .  .  .  .  .  .  .  .  .  .  .  27
Cleaning rear dust screen .  .  .  .  .  .  .  .  .  .  .  28
Replacing the keyboard and mouse .  .  .  .  .  .  .  28
Removing the computer cover .  .  .  .  .  .  .  .  .  28
Removing the computer cover ii .  .  .  .  .  .  .  .  29
Removing the front bezel .  .  .  .  .  .  .  .  .  .  .  30
Cleaning front dust screen

.  .  .  .  .  .  .  .  .  .  31

Replacing a memory module.  .  .  .  .  .  .  .  .  .  31
Replacing a hard disk drive .  .  .  .  .  .  .  .  .  .  32
Replacing an optical drive .  .  .  .  .  .  .  .  .  .  .  33
Replacing the microprocessor fan assembly

.  .  .  34

Replacing the rear system fan .  .  .  .  .  .  .  .  .  35
Replacing a front fan .  .  .  .  .  .  .  .  .  .  .  .  .  36
Replacing the Power supply .  .  .  .  .  .  .  .  .  .  37
Replacing the Wi-Fi card .  .  .  .  .  .  .  .  .  .  .  38
Removing the top cover

.  .  .  .  .  .  .  .  .  .  .  39

Replacing a graphics card.  .  .  .  .  .  .  .  .  .  .  41
Replacing the CPU .  .  .  .  .  .  .  .  .  .  .  .  .  42
Replacing the motherboard .  .  .  .  .  .  .  .  .  .  44
FRU lists

.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  45

Chapter 9.  General information .  .  .  .  51

Additional Service Information .  .  .  .  .  .  .  .  .  51

© Copyright Lenovo 2017

iii

Summary of Contents for Legion Y720T

Page 1: ...Lenovo Legion Y720T Hardware Maintenance Manual Machine Types 90H5 Lenovo Legion Y720T 34IKH Energy Star 90H6 Lenovo Legion Y720T 34IKH Non Energy Star ...

Page 2: ......

Page 3: ...Lenovo Legion Y720T Hardware Maintenance Manual Machine Types 90H5 Lenovo Legion Y720T 34IKH Energy Star 90H6 Lenovo Legion Y720T 34IKH Non Energy Star ...

Page 4: ...ht Lenovo 2017 LIMITED AND RESTRICTED RIGHTS NOTICE If data or software are delivered pursuant a General Services Administration GSA contract use reproduction or disclosure is subject to restrictions set forth in Contract No GS 35F 05925 ...

Page 5: ...dditional Service Information 20 POST error codes 20 Undetermined problems 20 Chapter 7 Locations 23 Identifying internal components 23 Identifying parts on the system board 24 Chapter 8 Replacing hardware 27 General information 27 Cleaning rear dust screen 28 Replacing the keyboard and mouse 28 Removing the computer cover 28 Removing the computer cover ii 29 Removing the front bezel 30 Cleaning f...

Page 6: ...iv Lenovo Legion Y720T Hardware Maintenance Manual ...

Page 7: ...ity Lenovo and Intel have not tested and do not warranty the operation of the processor beyond its specifications Lenovo and Intel have not tested and do not warranty the operation of other system components beyond their industry standard specifications Lenovo and Intel assume no responsibility that the processor and other system components including if used with altered clock frequencies voltages...

Page 8: ...2 Lenovo Legion Y720T Hardware Maintenance Manual ...

Page 9: ...l 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 Ensure 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 nonconductive clip approximately 8 centimeters 3 inches from the end Do ...

Page 10: ... in your pocket or behind your back Remember There must be a complete circuit to cause electrical shock By observing the above rule you may prevent a current from passing through your body When using a tester 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 me...

Page 11: ... 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 frame ground b The power cord should be the appropriate type as specified in the parts listings c Insulation must not be frayed or worn 4 Remove the cover 5 Check for any obvious alterations Use good...

Page 12: ... Electrical grounding of the computer is required for operator safety and correct system function Proper grounding of the electrical outlet can be verified by a certified electrician Safety notices The caution and danger safety notices in this section are provided in the the language of English DANGER Electrical current from power telephone and communication cables is hazardous To avoid a shock ha...

Page 13: ... not Throw or immerse into water Heat to more than 100 C 212 F Repair or disassemble Dispose of the battery as required by local ordinances or regulations CAUTION When laser products such as CD ROMs DVD ROM drives fiber optic devices or transmitters are installed note the following Do not remove the covers Removing the covers of the laser product could result in exposure to hazardous laser radiati...

Page 14: ...do not turn off the electrical current supplied to the device The device also might have more than one power cord To remove all electrical current from the device ensure that all power cords are disconnected from the power source CAUTION Do not place any object weighing more than 82 kg 180 lbs on top of rack mounted devices 8 Lenovo Legion Y720T Hardware Maintenance Manual ...

Page 15: ...ions for your computer This section lists the physical specifications for your computer Type Lenovo Legion Y720T This section lists the physical specifications Environment Air temperature Operating 10 to 35 C Transit 20 to 55 C Humidity Operating 35 to 80 Transit 20 to 90 40 C Altitude 86KPa to 106KPa Electrical input Input voltage 90V 264V AC Input frequency 47Hz 63Hz Copyright Lenovo 2017 9 ...

Page 16: ...10 Lenovo Legion Y720T Hardware Maintenance Manual ...

Page 17: ...dure to help determine the cause of the problem 1 Power off the computer and all external devices 2 Check all cables and power cords 3 Set all display controls to the middle position 4 Power on all external devices 5 Power on the computer Look for displayed error codes Look for readable instructions or a main menu on the display If you did not receive the correct response proceed to step 6 If you ...

Page 18: ...12 Lenovo Legion Y720T Hardware Maintenance Manual ...

Page 19: ... see Starting the Setup Utility program You must use the keyboard when using the Lenovo BIOS Setup Utility menu The keys used to perform various tasks are displayed on the bottom of each screen Using passwords You can use the Lenovo BIOS Setup Utility program to set passwords to prevent unauthorized persons from gaining access to your computer and data See Starting the Setup Utility program The fo...

Page 20: ...rectly the password will be installed To change an Administrator Password do the following 1 Start the Lenovo BIOS Setup Utility program see Starting the Lenovo BIOS Setup Utility program on page 13 2 From the Security menu select Set Administrator Password and press the Enter key 3 The password dialog box will be displayed Type the current password then press Enter key 4 Type the new password the...

Page 21: ...password dialog box will be displayed Type the current password and press the Enter key 3 To delete the Power On Password Enter blank fields for each new password line item A setup notice will display that changes have been saved 4 Return to the Lenovo BIOS Setup Utility program menu and select the Exit option 5 Select Save changes and Exit from the menu Enabling or disabling a device The Devices ...

Page 22: ...d the F12 key then turn on the computer When the Startup Device Menu appears release the F12 key Note If the Startup Device Menu does not display using these steps repeatedly press and release the F12 key rather than keeping it pressed when turning on the computer 3 Use and arrows to select the desired startup device from the Startup Device Menu and press the Enter key to begin Note Selecting a st...

Page 23: ...p Utility program main menu You might have to press the Esc key several times Do one of the following If you want to save the new settings select Save changes and Exit from the menu When the Save reset window shows select the Yes button and then press the Enter key to exit the Lenovo BIOS Setup Utility program If you do not want to save the settings select Discard changes and Exit from the menu Wh...

Page 24: ...18 Lenovo Legion Y720T Hardware Maintenance Manual ...

Page 25: ...d disk drive boot error A hard disk drive boot error can have the following causes Error FRU Action The startup drive is not included in the boot sequence in configuration Check the configuration and ensure the startup drive is in the boot sequence No operating system installed on the boot drive Install an operating system on the boot drive The boot sector on the startup drive is corrupted The dri...

Page 26: ...error codes Each time you turn the computer on it performs a series of tests to check that the system is operating correctly and that certain options are set This series of tests is called the Power On Self Test or POST POST does the following Checks some basic system board operations Checks that the memory is working correctly Starts video operations Verifies that the boot drive is working POST E...

Page 27: ...k drive f Disk drive 3 Power on the computer to re test the system 4 Repeat steps 1 through 3 until you find the failing device or component If all devices and components have been removed and the problem continues replace the system board Chapter 6 Symptom to FRU Index 21 ...

Page 28: ...22 Lenovo Legion Y720T Hardware Maintenance Manual ...

Page 29: ... computer Identifying internal components The following illustration shows the components inside your computer 2 1 3 4 5 6 7 8 17 15 16 14 13 10 12 19 20 21 22 23 24 25 26 27 9 11 10 18 No Description Self service CRU Optional service CRU 1 Chassis No No 2 System fan rear No No 3 Graphic card Yes No Copyright Lenovo 2017 23 ...

Page 30: ...cal drive holder No No 21 Front bezel Yes Yes 22 System fans front No Yes 23 Hard disk drive bracket Yes Yes 24 Hard disk drive Yes Yes 25 Mouse Yes Yes 26 Keyboard Yes Yes 27 Power cord Yes Yes Identifying parts on the system board The system board also known as the mainboard or motherboard is the main circuit board in your computer It provides basic computer functions and supports a variety of d...

Page 31: ...panel connector 4 Microprocessor fan header 2 14 Front USB 2 0 connector Power fan header 5 Memory slots 4 15 Front USB card reader connector 6 Front LED header 16 LPC debug 7 Power connector 17 Mini PCI E slot 8 Front USB 3 0 slot 18 PCI express X 1 adapter slots 5 9 Aux fan 1 19 PCI express X 16 adapter slot 10 SATA connectors 4 20 System fan header Chapter 7 Locations 25 ...

Page 32: ...26 Lenovo Legion Y720T Hardware Maintenance Manual ...

Page 33: ...nstructions Before proceeding with the disassembly procedure make sure that you do the following 1 Turn off the power to the system and all peripherals 2 Unplug all power and signal cables from the computer 3 Place the system on a flat stable surface General information Pre disassembly instructions Before proceeding with the disassembly procedure make sure that you do the following 1 Turn off the ...

Page 34: ...efer to Removing the computer cover Step 5 Press then pull the out the rear dust screen as shown Step 6 Cleaning tips a Us a brush gently brush through the dust screen to remove the dust b If cleaning the dust screen with clean water make sure you dry the dust screen completely before put it back Step 7 To install the rear dust screen a Line up the new dust screen with the chassis and push the scr...

Page 35: ...ith the guide track on the computer case then slide the cover in b Push the cover till it s lock position c Push the cover lock to lock position Removing the computer cover ii Attention Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover For this procedure it helps to lay the computer on a flat stable surface To remove the computer cover ii Step 1 Remove any...

Page 36: ...n push it in till the cover locked properly c Secure the computer cover with two screws Removing the front bezel Note For this procedure it helps to lay the computer flat To remove the front bezel Step 1 Remove the computer cover Refer to Removing the computer cover Step 2 Remove the front bezel by releasing the three plastic tabs inside the chassis and pulling the bezel out as shown 30 Lenovo Leg...

Page 37: ...and right view and Rear view for help with locating the various connectors Step 4 Remove the computer cover Refer to Removing the computer cover Step 5 Remove the computer cover Refer to Removing computer cover Step 6 Remove the front bezel Refer to Removing the front bezel Step 7 Pull the out the front dust screen as shown Step 8 Cleaning tips a Us a brush gently brush through the dust screen to ...

Page 38: ...the system board Push the memory module straight down into the connector until the retaining clips close Step 5 Reattach the computer cover Replacing a hard disk drive Note For this procedure it helps to lay the computer flat To replace a hard disk drive Step 1 Remove the computer cover Refer to Removing the computer cover Step 2 Disconnect the data and power cables from the hard disk drive a Step...

Page 39: ...over Replacing an optical drive Note For this procedure it helps to lay the computer flat stable surface To replace an optical drive Step 1 Remove the computer cover Refer to Removing the computer cover Step 2 Remove the front bezel Refer to Removing the front bezel Step 3 Disconnect the data and power cables from the rear of the optical drive a Step 4 Press the release button and push the optical...

Page 40: ...d devices Step 2 Unplug all power cords from electrical outlets Step 3 Disconnect all cables attached to the computer This includes power cords input output I O cables and any other cables that are connected to the computer Refer to Left and right view and Rear view for help with locating the various connectors Step 4 Remove the computer cover Refer to Removing the computer cover Step 5 Disconnect...

Page 41: ...ched devices Step 2 Unplug all power cords from electrical outlets Step 3 Disconnect all cables attached to the computer This includes power cords input output I O cables and any other cables that are connected to the computer Refer to Left and right view and Rear view for help with locating the various connectors Step 4 Remove the computer cover Refer to Removing the computer cover Step 5 Disconn...

Page 42: ...tlets Step 3 Disconnect all cables attached to the computer This includes power cords input output I O cables and any other cables that are connected to the computer Refer to Left and right view and Rear view for help with locating the various connectors Step 4 Remove the computer cover Refer to Removing the computer cover Step 5 Remove the computer cover ii Refer to Removing the computer cover ii...

Page 43: ...e fan with the two locking pins b Align the two locking pins at the bottom of the bracket with mounting holes on the chassis then snap the fan and bracket into position c Connect the new fan cable to the connector on the motherboard Step 11 Reattach the front bezel and the computer covers Replacing the Power supply Note For this procedure it helps to lay the computer flat To replace the Power supp...

Page 44: ...e new power supply a Line up the holes on the new power supply with mounting holes on the rear of the chassis and secure it to the chassis with the 4 screws b Connect the power cables to the connectors on the motherboard Step 9 Reattach the computer cover Replacing the Wi Fi card Note For this procedure it helps to lay the computer flat To replace the Wi Fi card Step 1 Remove any media disks CDs D...

Page 45: ...the cover For this procedure it helps to lay the computer on a flat stable surface To remove the top cover Step 1 Remove any media disks CDs or memory cards from the drives shut down the computer and turn off all attached devices Step 2 Unplug all power cords from electrical outlets Step 3 Disconnect all cables attached to the computer This includes power cords input output I O cables and any othe...

Page 46: ...Step 6 Slide the top cover outward to remove the top cover as shown Step 7 Reinstall the computer cover 40 Lenovo Legion Y720T Hardware Maintenance Manual ...

Page 47: ...Push the graphic card lock as shown to unlock the graphic 1 Step 3 Disconnect the power cables from the graphics card 2 Step 4 Turn the locking pin counterclockwise 90 then slowly take it out 3 Step 5 Push the locking pin that locks the graphic card to the motherboard 4 then lift the card straight up to remove it 5 Step 6 To install the new graphics card a Attach the new graphics card to the same ...

Page 48: ...o the computer Refer to Left and right view and Rear view for help with locating the various connectors Step 4 Remove the computer cover Refer to Removing the computer cover Step 5 Remove the microprocessor fan Refer to Replacing the microprocessor fan Step 6 Remove the CPU fan assembly Refer to Replacing the CPU fan assembly Step 7 To remove the microprocessor 3 from the system board press then s...

Page 49: ... the microprocessor socket Important To avoid damaging the microprocessor contacts keep the microprocessor completely level while installing it into the socket Step 10 Lower the microprocessor straight down into its socket on the motherboard Step 11 To secure the microprocessor in the socket close the microprocessor retainer and lock it into position with the small handle Step 12 Use a thermal gre...

Page 50: ... Step 6 Remove the microprocessor fan Refer to Replacing the microprocessor fan Step 7 Remove the heat sink Refer to Replacing the heat sink Step 8 Remove the graphic card Refer to Replacing a graphic card Step 9 Remove the Wi Fi card Refer to Replacing the Wi Fi card Step 10 Remove the CPU Refer to Replacing the CPU Step 11 Disconnect the all cables from the connectors on motherboard Step 12 Remo...

Page 51: ...u457mm SATA cable 2 latch 00XL159 Fru 100mm 6pin to 8pincable 04X2791 Fru460mmSATAcable R_angle 00XL323 Fru 500mmY logo LED cable 00XL324 Fru 555mm Y920right ledcable 00XL325 Fru 555mm Y920leftled cable 00XL137 Fru460mmSATAcable R_angle 04X2777 Fru Gaming PCantenna cable_Black 04X2778 Fru Gaming PCantenna cable_Gray CARDPOP 01AJ868 Taisol PCIeX4 to M 2 ssd hb DT_KYB 00XH633 USB Calliope KB BK NORD...

Page 52: ...Calliope KB BK CZE 00XH593 USB Calliope KB BK BUL 00XH591 USB Calliope KB BK BEL ENG 00XH616 USB Calliope KB BK RUS 00XH587 USB Calliope KB BK ENG 00XH588 USB Calliope KB BK ARA 00XH635 USB Calliope KB BK CAN ENG FRA FAN 01MN028 12025 System Fan W O Rubbe 00XD648 Front Fan W O LED 00XD157 Front System Fan 00KT235 Rear System Fan HDD_ASM 45K0623 HDD 1TB 7200 DT3 SATA3 STD 00PC552 HDD 2TB 7200 DT3 S...

Page 53: ...N LH 00XL017 Fru LINECORD TW 1 8M 3P NON LH 00XL028 Fru LINECORD IL 1 8M 3P NON LH 00XL033 Fru LINECORD BR 1 8M 3P NON LH 00XL018 Fru LINECORD TW 1 8M 3P NON LH 00XL050 Fru LINECORD TH 1 8M 3P NON LH 00XL047 Fru LINECORD IT 1 8M 3P NON LH 00XL023 Fru LINECORD GB 1 8M 3P NON LH 00XL024 Fru LINECORD GB 1 8M 3P NON LH 00XL005 Fru US CA 1 8M 3P NON LH 00XL025 Fru LINECORD GB 1 8M 3P NON LH 00XL026 Fru...

Page 54: ...X1060 BKT ASSY Y920 01MN037 34L TP Window ASSY Y920 00XD545 34L HDD Try Destiny 01MN030 34L GFX1060 BKT Assy Y700 00XD328 HDMI_COVER Kit 01MN282 34L ChassisMetal ASSY Y720 00XD537 34L Top Bezel Cover Destiny 00XD538 34L Top Bezel Base Destiny 01MN042 Front Dust filter Y920 01MN043 Bottom Dust filter Y920 00XD549 34L L cover Y700 00XD539 34L Top Handle Destiny 00XD550 34L R cover Y700 00XD540 34L F...

Page 55: ... Memory SSD_ASM 00UP436 256G M 2 2280 PCIe3x4 SAM OPAL 00UP448 128G M 2 2280 PCIe3x4 SAMSG STD 00UP642 512G M 2 2280 PCIe3x4 TOS OPAL 00UP641 256G M 2 2280 PCIe3x4 TOS OPAL 00UP437 512G M 2 2280 PCIe3x4 SAM OPAL VIDEO_CARD 01AJ879 M GTX1070 8G D5 H 3 DP DVI B 01AJ878 M GTX1080 8G D5X H 3 DP DVI B 01AJ876 MSI RX570 4G D5 3 DP HDMI HP 01AJ856 MSI GTX1050Ti 4G D5 H DP DVI 01AJ844 MSI GTX1060 6G D5 H ...

Page 56: ...50 Lenovo Legion Y720T Hardware Maintenance Manual ...

Page 57: ...IOS As this computer has an ACPI BIOS system the operating system is allowed to control the power management features of the computer and the settings for Advanced Power Management APM BIOS mode is ignored Not all operating systems support ACPI BIOS mode Automatic Power On features The Automatic Power On features within the Power Management menu allow you to enable and disable features that turn o...

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