About this manual ® This manual contains service and reference information for the following ThinkPad products. ThinkPad P15 Gen 1 Machine Types (MT) 20ST and 20SU ThinkPad T15g Gen 1 Machine Types (MT) 20UR and 20US Use this manual along with the advanced diagnostic tests to troubleshoot problems.
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ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
If any unsafe conditions are present, you must determine how serious the apparent hazard could be and whether you can continue without first correcting the problem. ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
0.1 ohm or less between the external ground pin and the frame ground. b. The power cord should be the authorized type specified for your computer. Go to: https:// support.lenovo.com/partslookup c. Insulation must not be frayed or worn. 4. Check for cracked or bulging batteries.
The safety notices in this section are provided in the following languages: • English • Arabic • Brazilian Portuguese • French • German • Hebrew • Japanese • Korean • Spanish • Traditional Chinese DANGER DANGER DANGER ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
UEFI BIOS downloads. Telephone numbers for Lenovo Support are available at: https://pcsupport.lenovo.com/supportphonelist • System Disassembly/Reassembly videos that show the FRU removals or replacements for the Lenovo authorized service technicians are available in the following support site: https://www.lenovoservicetraining.com/ion/...
Dynamic Configure To Order (CTO) model This model provides the ability for a customer to configure a Lenovo solution from a Web Site, and have this configuration sent to fulfillment, where it is built and shipped directly to the customer. The machine label and eSupport will load these products as the 4-character MT, 4-character model, and 2-character country code.
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2. Type the Machine Type in the corresponding field to get a general FRU list. Or type the Serial Number for more detailed FRU information. Chapter 2 Important service information...
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ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
Note: If you are unable to isolate and repair the problem yourself after running Lenovo Vantage, save and print the log files created by the program. You need the log files when you speak to a Lenovo technical support representative.
If the computer you are servicing is not installed with the UEFI diagnostic program, you can download a bootable diagnostic program from the Lenovo Support Web site. The bootable diagnostic programs enable you to test computer memory and internal storage devices, view system information, and check and recover the internal storage devices.
To check the ac power adapter, do the following: 1. Unplug the ac power adapter cable from the computer. 2. Measure the output voltage at the plug of the ac power adapter cable. See the following illustration: ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
This computer supports only batteries specially designed for this specific system and manufactured by Lenovo or an authorized builder. The system does not support unauthorized batteries or batteries designed for other systems. If an unauthorized battery or a battery designed for another systems is installed, the system will not charge.
• If the voltage is correct, replace the system board. • If the voltage is not correct, replace the coin-cell battery. • If the coin-cell battery discharges quickly after replacement, replace the system board. ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
Passwords As many as four passwords may be needed for any ThinkPad notebook computer: the power-on password, the hard disk password, the supervisor password, and the system management password. ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
If it has, it can be used for access to the hard disk drive. If no master hard disk password is available, neither Lenovo nor Lenovo authorized service technicians provide any services to reset either the user or the master hard disk password, or to recover data from the hard disk drive. The hard disk drive can be replaced for a scheduled fee.
Attention: If User only mode is selected and the user hard disk password has been forgotten and cannot be made available to the service technician, neither Lenovo nor Lenovo authorized service technicians provide ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
To put the system back to operational status, the only Lenovo and Lenovo-authorized service solution would be to replace the hard disk drive (HDD) or SSD with a scheduled fee.
Symptom-to-FRU index This section contains following information: • “Numeric error codes” on page 37 ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
• “Error messages” on page 39 • “Beep errors” on page 39 • “No-beep symptoms” on page 41 • “LCD-related symptoms” on page 41 • “Intermittent problems” on page 42 • “Undetermined problems” on page 42 The symptom-to-FRU index in this section lists symptoms and errors and their possible causes. The most likely cause is listed first, in boldface type.
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2. Replace the M.2 solid-state drive. 3. Replace the system board. 2200 Replace the system board. Machine Type and Serial Number are invalid. 2201 Replace the system board. Machine UUID is invalid ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
Beep errors Lenovo SmartBeep technology enables you to decode beep errors with your smartphone when a black screen occurs with beeps from your computer. To decode the beep error with Lenovo SmartBeep technology, do the following: 1.
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0288: Computer display error 1. Reconnect the display cable on both the system board side and the computer display side (service provider only). 2. Replace the system board (service provider only). ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
LCD technology, but excessive pixel problems can cause viewing concerns.If the LCD you are servicing has two or less visible defective pixels, it should not be considered faulty. However, if the LCD has three or more visible defective pixels, it will be deemed as defective by Lenovo and it should be replaced. Notes: •...
6. If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU. 7. If the problem remains, replace the following FRUs one at a time (do not replace a nondefective FRU): a. System board b. LCD unit ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
An X mark is displayed next to the selected drive. Note: The drive that cannot be used to create a RAID volume is not selectable. ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
d. Strip Size: Press the up and down arrow keys to select a strip size, and then press Enter to complete the configuration. Note: This option is only available for RAID 0. e. Capacity: Customize the capacity of the RAID volume. The default RAID volume is the largest value. f.
RAID 1 volume under rebuilding is displayed under RAID Volumes with a Rebuilding mark. 5. Wait a few minutes. When the rebuild process finishes successfully, the Rebuilding mark is changed to the Normal mark. 6. Press F10 to save changes and exit. ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
1. Go to Control Panel, and then change the view of Control Panel from Category to Large icons or Small icons. 2. Click Lenovo - Keyboard Manager and the Keyboard Manager window is displayed. 3. Select the options of your preference.
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Equal the Pause key on a conventional external keyboard. Fn+S Equal the SysRq key on a conventional external keyboard. Fn+Left arrow Equal the Home key. Fn+Right arrow Equal the End key. ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
Base view Power button Numeric keypad Fingerprint reader Trackpad TrackPoint®pointing device Speaker Left view HDMI™ connector Always On USB 3.1 connector Gen 1 Nano-SIM-card slot* Audio connector * for selected models ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
Right view Smart-card slot* SD-card slot USB 3.2 connector Gen 1 Security-lock slot * for selected models Rear view System status indicator Ethernet connector USB-C™ ( 3.2 Gen 1) connector Thunderbolt™ 3 connectors (USB-C) Power connector Chapter 7 Locations...
CRU, Lenovo will ship the CRU to you. CRU information and replacement instructions are shipped with your product and are available from Lenovo at any time upon request. You can find a list of CRUs for your product in this Hardware Maintenance Manual. An electronic version of this manual can be found at https:// .
Major FRUs Table 6. Major FRUs FRU descriptions Self-service CRU Optional-service CRU LCD unit Keyboard bezel assembly Power button board with cable Chapter 7 Locations...
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Nano-SIM-card tray* Chassis assembly dc-in cable dc-in cable bracket System board GPU board cable GPU board USB board I/O board cable Thermal fan assembly Hinge caps Keyboard Power cord ac power adapter ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
Table 6. Major FRUs (continued) FRU descriptions Self-service CRU Optional-service CRU Miscellaneous parts (see “Miscellaneous parts” on page 58) Lenovo factory recovery USB key * * for selected models LCD FRUs For models without touch function: Chapter 7 Locations...
Label kit Connector and cable guide This section provides information for Lenovo authorized service technicians to help identify connectors and cables for replacement purpose. To view each FRU and the exploded illustration of the computer, see “Major FRUs” on page 53 and “LCD FRUs” on page 55.
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System board connectors and cables Internal cable required Connector/feature Cable connection Ethernet connector (external) Connect the computer to a LAN through this connector. Thunderbolt™ 3 connectors Connect a compatible device to this (external) connector. dc-in connector cable dc-in connector (internal) Connect the dc-in connector cable to this connector.
5G antenna and the other end to this connector. Looking up FRU information For detailed FRU information, including part numbers, descriptions, and substitution part numbers, go to: https://support.lenovo.com/partslookup ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
CRU to you. CRU information and replacement instructions are shipped with your product and are available from Lenovo at any time upon request. You can find a list of CRUs for your product in this Hardware Maintenance Manual. An electronic version of this manual can be found at .
If you replace the system board, you must restore the serial number of the system unit to its original value. The serial number of the system unit is written on the label attached to the bottom of the computer. ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
Maintenance Key. Note: Only an authorized Lenovo service technician can access the above Web site. 3. Restart the computer. 4. When the logo is displayed, press Esc. The ThinkPad Config Information Update Utility interface is displayed.
To check what ECAs have been previously applied to the machine, use the ECA Information Read/Write function on the LENOVO ThinkPad Hardware Maintenance Diskette or Maintenance Key. 1. Insert the latest version of LENOVO ThinkPad Hardware Maintenance Diskette or Maintenance Key, and then restart the computer.
CRU to you. CRU information and replacement instructions are shipped with your product and are available from Lenovo at any time upon request. You can find a list of CRUs for your product in this Hardware Maintenance Manual. An electronic version of this manual is available for downloading at https:// support.lenovo.com...
After you finish the servicing, ensure that you install the nano-SIM card back into the slot firmly. Removing a major FRU This section provides instructions on how to remove a major FRU. ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
1010 Bottom door Removal steps of the bottom door 1020 M.2 solid-stat drive For access, remove these FRUs: • “1010 Bottom door” on page 67 Attention: • Do not drop the drive or apply any physical shock to it. The drive is sensitive to physical shock. Improper handling can cause damage and permanent loss of data.
• If your computer is installed with only one memory module, ensure that the memory module is installed into the lower memory slot. • Ensure that the memory module is firmly installed in the slot and does not move easily. 1040 Keyboard For access, remove these FRUs: ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
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• “1010 Bottom door” on page 67 Removal steps of the keyboard Notes: • Depending on the model, your computer might look different from the illustrations in this topic. Chapter 9 Removing or replacing a FRU...
• “1040 Keyboard” on page 68 Removal steps of the memory module bracket and memory module under the keyboard Torque Step Screw (quantity) Color M2 × 3 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm) ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
1060 Wireless LAN card For access, remove these FRUs: • “1010 Bottom door” on page 67 • “1040 Keyboard” on page 68 Removal steps of the wireless LAN card Step Screw (quantity) Color Torque M2 × 3 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm)
Plug the orange cable into the main connector on the card; and plug the blue cable into the auxiliary connector on the card. 1080 Keyboard bezel assembly For access, remove these FRUs: • “1010 Bottom door” on page 67 • “1040 Keyboard” on page 68 ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
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Removal steps of keyboard bezel assembly When installing: Ensure that all the latches are well assembled and there is no abnormal gap. Chapter 9 Removing or replacing a FRU...
• “1010 Bottom door” on page 67 • “1040 Keyboard” on page 68 • “1080 Keyboard bezel assembly” on page 72 Removal steps of the fingerprint reader cable, bracket and board ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
When installing: Ensure that the connector is attached firmly. 1110 Speaker assembly For access, remove these FRUs: • “1010 Bottom door” on page 67 • “1040 Keyboard” on page 68 • “1080 Keyboard bezel assembly” on page 72 Removal steps of the speaker assembly Step Screw (quantity) Color...
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For access, remove these FRUs: • “1010 Bottom door” on page 67 • “1040 Keyboard” on page 68 • “1080 Keyboard bezel assembly” on page 72 • “1140 Bottom cover” on page 78 ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
1130 MIMO wireless-WAN antenna assembly with cable For access, remove these FRUs: • “1010 Bottom door” on page 67 • “1040 Keyboard” on page 68 • “1080 Keyboard bezel assembly” on page 72 Removal steps of the MIMO wireless-WAN antenna assembly with cable Step Screw (quantity) Color...
1140 Bottom cover For access, remove these FRUs: • “1010 Bottom door” on page 67 Removal steps of the bottom cover ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
Label locations on the base cover assembly The following illustration shows the location of each label. COA label IMEI label Asset tag label Country label Serial number label Genuine Microsoft label (GML) GEO label 1150 Built-in battery For access, remove these FRUs: •...
Use only the authorized battery specified for your computer. Any other battery could ignite or explode. Removal steps of the coin-cell battery When installing: Ensure that the coin-cell battery connector is attached firmly. ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
1170 Trackpad and trackpad cable For access, remove these FRUs in order: • “1010 Bottom door” on page 67 • “1140 Bottom cover” on page 78 • “1150 Built-in battery” on page 79 Removal steps of the trackpad and trackpad cable Step Screw (quantity) Color...
• “1140 Bottom cover” on page 78 Removal steps of the hinge caps Step Screw (quantity) Color Torque M 2.0 × 3 mm, flat-head, nylon-coated (2) Black 0.294 Nm (3.0 kgf-cm) ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
1190 LCD unit For access, remove these FRUs: • “1010 Bottom door” on page 67 • “1040 Keyboard” on page 68 • “1080 Keyboard bezel assembly” on page 72 • “1140 Bottom cover” on page 78 • “1180 Hinge caps” on page 82 Removal steps of the LCD unit Chapter 9 Removing or replacing a FRU...
• “1010 Bottom door” on page 67 • “1040 Keyboard” on page 68 • “1080 Keyboard bezel assembly” on page 72 • “1140 Bottom cover” on page 78 Removal steps of the thermal fan assembly ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
When installing: • Ensure that the connector is attached firmly. • Do not press the top of the fan cover and the fan hub. • Before you attach the fan assembly to the computer, apply thermal grease, at an amount of 0.2 grams, on the parts marked as shown in the following illustrations.
• At every point in the process, be sure not to drop or stack the system board. • If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or a corrugated conductive surface. ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
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For access, remove these FRUs in order: • “1010 Bottom door” on page 67 • “1020 M.2 solid-stat drive” on page 67 • “1030 Memory module under the bottom door” on page 68 • “1040 Keyboard” on page 68 • “1050 Memory module bracket and memory module under the keyboard” on page 70 •...
Removal steps of the USB board Step Screw (quantity) Color Torque M2 × 3 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm) 1240 dc-in bracket and dc-in cable assembly The base cover assembly will stand out after you remove these FRUs in order: •...
• “1210 GPU board” on page 85 • “1220 System board” on page 86 • “1230 I/O board and I/O board cable” on page 88 • “1240 dc-in bracket and dc-in cable assembly” on page 89 ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
Removing an LCD FRU for non-touch models This section provides instructions on how to remove an LCD FRU for models without touch feature. 2010 LCD bezel assembly For access, remove this FRU: • “1190 LCD unit” on page 83 Removal steps of the LCD bezel assembly When installing: Ensure that all the latches are attached firmly.
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Note: Do not pull the tapes too fast, otherwise, the tapes might snap. 2. Turn over the LCD panel and then detach the LCD cable from the LCD panel as shown. ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
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Installation steps of the LCD panel and the LCD cable 1. Peel off the release liners from one side of the new elastic adhesive tapes. Apply the tapes to the correct locations. Peel off the release liners from the other side of the tapes. Ensure that two tapes are applied correctly as shown.
For access, remove these FRUs: • “1190 LCD unit” on page 83 • “2010 LCD bezel assembly” on page 91 • “2020 LCD panel, LCD cable and hinge assembly” on page 91 ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
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Removal steps of the conventional camera/microphone module Removal steps of the infrared camera/microphone module Chapter 9 Removing or replacing a FRU...
• “1190 LCD unit” on page 83 • “2010 LCD bezel assembly” on page 91 • “2020 LCD panel, LCD cable and hinge assembly” on page 91 • “2030 Camera/microphone module” on page 94 ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
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Removal steps of the antenna kit and LCD rear cover assembly Cable routing: When you install the antenna kit, route the cables as shown in the following illustration. Chapter 9 Removing or replacing a FRU...
This section provides instructions on how to remove an LCD FRU for models with touch feature. 3010 LCD strip bezel For access, remove this FRU: • “1190 LCD unit” on page 83 ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
Removal steps of the LCD strip bezel When installing: Ensure that all the latches are attached firmly. 3020 Touch panel control card For access, remove these FRUs in order: • “1150 Built-in battery” on page 79 • “3010 LCD strip bezel” on page 98 Removal steps of the touch panel control card 3030 LCD panel assembly, LCD cable, and hinge assembly For access, remove these FRUs in order:...
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Removal steps of the LCD panel assembly Step Screw (quantity) Color Torque 0.294 Nm M2 × 2.5mm, flat-head, nylon-coated (2) Silver (3.0 kgf-cm) ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
When installing: Ensure that the LCD connector is attached firmly. Removal steps of the hinge assembly Step Screw (quantity) Color Torque M2.5 × 4 mm, flat-head, nylon-coated (4) black 0.294 Nm (3.0 kgf-cm) M2 × 3 mm, flat-head, nylon-coated (2) Silver 0.181 Nm (1.85 kgf-cm)
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• “3030 LCD panel assembly, LCD cable, and hinge assembly” on page 99 Removal steps of the infrared camera/microphone module Removal steps of the infrared camera/LED cable assembly ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
3050 Antenna kit For access, remove these FRUs in order: • “1190 LCD unit” on page 83 • “3010 LCD strip bezel” on page 98 • “3030 LCD panel assembly, LCD cable, and hinge assembly” on page 99 • “3040 Camera/microphone module” on page 101 Chapter 9 Removing or replacing a FRU...
• “3020 Touch panel control card” on page 99 • “3030 LCD panel assembly, LCD cable, and hinge assembly” on page 99 • “3040 Camera/microphone module” on page 101 • “3050 Antenna kit” on page 103 ThinkPad P15 Gen 1/T15g Gen 1 Hardware Maintenance Manual...
Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead.
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For electronic emission information on Class B digital devices, refer to the corresponding information in the User Guide. EU contact: Lenovo (Slovakia), Landererova 12, 811 09 Bratislava, Slovakia Trademarks The following terms are trademarks of Lenovo in the United States, other countries or both: Lenovo Lenovo logo ThinkPad...
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Part Number: SP40Y99612 Printed in China (1P) P/N: SP40Y99612 *1PSP40Y99612*...