Lenovo 12B800DDGE Hardware Maintenance Manual
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Lenovo 12B800DDGE Hardware Maintenance Manual

Lenovo 12B800DDGE Hardware Maintenance Manual

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ThinkCentre neo 50a 24 Gen 3
Hardware Maintenance Manual

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  • Page 1 ThinkCentre neo 50a 24 Gen 3 Hardware Maintenance Manual...
  • Page 2 Second Edition (March 2023) © Copyright Lenovo 2023. 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-...

  • Page 3: Table Of Contents

    ..Chapter 7. Notices and Chapter 5. Diagnostics ..39 trademarks ....79 © Copyright Lenovo 2023...
  • Page 4 ThinkCentre neo 50a 24 Gen 3 Hardware Maintenance Manual...

  • Page 5: About This Manual

    Important: This manual is intended only for trained service technicians who are familiar with ThinkCentre computers. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively. Before servicing a ThinkCentre computer, be sure to read and understand Chapter 1 “Important safety information” on page 1. © Copyright Lenovo 2023...
  • Page 6 ThinkCentre neo 50a 24 Gen 3 Hardware Maintenance Manual...

  • Page 7: Chapter 1. Important Safety Information

    Avoid contact with hot components inside the computer. During operation, some components become hot enough to burn the skin. Before you open the computer cover, turn off the computer, disconnect power, and wait approximately 10 minutes for the components to cool. © Copyright Lenovo 2023...

  • Page 8: Electrical Safety

    Electrical safety CAUTION: Electrical current from power, telephone, and communication cables can be hazardous. To avoid personal injury or equipment damage, disconnect the attached power cords, telecommunication systems, networks, and modems before you open the computer covers, unless instructed otherwise in the installation and configuration procedures.

  • Page 9: Safety Inspection Guide

    – Power supply units – Pumps – Blowers and fans – Motor generators and similar units. (This practice ensures correct grounding of the units.) • If an electrical accident occurs: – Use caution; do not become a victim yourself. – Switch off power. –...

  • Page 10: Handling Electrostatic Discharge-Sensitive Devices

    Handling electrostatic discharge-sensitive devices Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects. Protect against ESD damage by equalizing the charge so that the machine, the part, the work mat, and the person handling the part are all at the same charge.
  • Page 11 • Spanish DANGER Electrical current from power, telephone and communication cables is hazardous. To avoid a shock hazard: • Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm. • Connect all power cords to a properly wired and grounded electrical outlet. •...
  • Page 12 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 radiation. There are no serviceable parts inside the device. •...
  • Page 13 Chapter 1 Important safety information...
  • Page 14 ≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb) ThinkCentre neo 50a 24 Gen 3 Hardware Maintenance Manual...
  • Page 15 PERIGO A corrente elétrica proveniente de cabos de alimentação, de telefone e de comunicações é perigosa. Para evitar risco de choque elétrico: • Não conecte nem desconecte nenhum cabo ou execute instalação, manutenção ou reconfiguração deste produto durante uma tempestade com raios. •...
  • Page 16 PRECAUCIÓN: Quando produtos a laser (como unidades de CD-ROMs, unidades de DVD-ROM, dispositivos de fibra ótica ou transmissores) estiverem instalados, observe o seguinte: • Não remova as tampas. A remoção das tampas de um produto a laser pode resultar em exposição prejudicial à...
  • Page 17 Chapter 1 Important safety information...
  • Page 18 ThinkCentre neo 50a 24 Gen 3 Hardware Maintenance Manual...
  • Page 19 Chapter 1 Important safety information...
  • Page 20 DANGER Le courant électrique provenant de l'alimentation, du téléphone et des câbles de transmission peut présenter un danger. Pour éviter tout risque de choc électrique : • Ne manipulez aucun câble et n'effectuez aucune opération d'installation, d'entretien ou de reconfiguration de ce produit au cours d'un orage.
  • Page 21 Connexion Déconnexion 1. Mettez les unités HORS TENSION. 1. Mettez les unités HORS TENSION. 2. Commencez par brancher tous les cordons sur les 2. Débranchez les cordons d'alimentation des prises. unités. 3. Débranchez les câbles d'interface des connecteurs. 3. Branchez les câbles d'interface sur des 4.
  • Page 22 ≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb) ATTENTION: Soulevez la machine avec précaution. ATTENTION: L'interrupteur de contrôle d'alimentation de l'unité et l'interrupteur dubloc d'alimentation ne coupent pas le courant électrique alimentantl'unité. En outre, le système peut être équipé de plusieurs cordonsd'alimentation.
  • Page 23 • Geräte niemals einschalten, wenn Hinweise auf Feuer, Wasser oder Gebäudeschäden vorliegen. • Die Verbindung zu den angeschlossenen Netzkabeln, Telekommunikationssystemen, Netzwerken und Modems ist vor dem Öffnen des Gehäuses zu unterbrechen, sofern in den Installations- und Konfigurationsprozeduren keine anders lautenden Anweisungen enthalten sind. •...
  • Page 24 Einige Lasergeräte enthalten eine Laserdiode der Klasse 3A oder 3B. Beachten Sie Folgendes: Laserstrahlung bei geöffneter Verkleidung. Nicht in den Strahl blicken. Keine Lupen oder Spiegel verwenden. Strahlungsbereich meiden. ≥18 kg ≥32 kg ≥55 kg ACHTUNG: Arbeitsschutzrichtlinien beim Anheben der Maschine beachten. ACHTUNG: Mit dem Netzschalter an der Einheit und am Netzteil wird die Stromversorgung für die Einheit nicht unterbrochen.
  • Page 25 Chapter 1 Important safety information...
  • Page 26 PERICOLO La corrente elettrica proveniente dai cavi di alimentazione, del telefono e di comunicazione può essere pericolosa. ThinkCentre neo 50a 24 Gen 3 Hardware Maintenance Manual...
  • Page 27 Per evitare il rischio di scosse elettriche: • Non collegare o scollegare qualsiasi cavo oppure effettuare l'installazione, la manutenzione o la riconfigurazione del prodotto durante un temporale. • Collegare tutti i fili elettrici a una presa di alimentazione correttamente cablata e dotata di messa a terra.
  • Page 28 Quando vengono installati prodotti laser (quali CD-ROM, unità DVD-ROM, unità a fibre ottiche o trasmittenti), tener presente quanto segue: • Non rimuovere gli sportelli. L'apertura di un'unità laser può determinare l'esposizione a radiazioni laser pericolose. All'interno dell'unità non vi sono parti su cui effettuare l'assistenza tecnica. •...
  • Page 29 Chapter 1 Important safety information...
  • Page 30 PELIGRO La corriente eléctrica procedente de cables de alimentación, teléfonos y cables de comunicación puede ser peligrosa. Para evitar el riesgo de descarga eléctrica: • No conecte ni desconecte los cables ni realice ninguna tarea de instalación, mantenimiento o reconfiguración de este producto durante una tormenta eléctrica. •...
  • Page 31 • Cualquier equipo que se conecte a este producto también debe conectarse a tomas de corriente debidamente cableadas. • Siempre que sea posible, utilice una sola mano para conectar o desconectar los cables de señal. • No encienda nunca un equipo cuando hay señales de fuego, agua o daños estructurales. •...
  • Page 32 PELIGRO Algunos productos láser tienen incorporado un diodo láser de clase 3A o clase 3B. Tenga en cuenta lo siguiente: Cuando se abre, queda expuesto a radiación láser. No mire directamente al rayo láser, ni siquiera con instrumentos ópticos, y evite exponerse directamente al rayo láser. ≥18 kg ≥32 kg ≥55 kg...

  • Page 33: Chapter 2. Important Service Information

    • Do not drop a system board or apply any excessive force to it. • Avoid rough handling of any kind. • Avoid bending a system board and hard pushing to prevent cracking at each Ball Grid Array (BGA) chipset. © Copyright Lenovo 2023...

  • Page 34: How To Use Error Codes

    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.

  • Page 35: Chapter 3. Product Overview

    Description Item Item Infrared (IR) camera, AI camera or Integrated Multi-touch screen* camera* Switch button Power button Internal speaker USB-A 3.2 Gen 1 connector Optical drive activity indicator* Optical drive eject button* * for selected models © Copyright Lenovo 2023...

  • Page 36: Rear

    Rear Description Description Item Item Combo audio jack Power connector HDMI™ in connector Ethernet connector HDMI out connector USB-A 2.0 connector ® Always On USB-A 3.2 Gen 2 connector USB-C (3.2 Gen 2) connectors USB-C (power) connector (with USB 2.0 data Security-lock slot transfer rate) ThinkCentre neo 50a 24 Gen 3 Hardware Maintenance Manual...

  • Page 37: Chapter 4. Service Checkout And Symptom-To-Fru Index

    • Machine type and model • Processor or hard disk drive upgrades • Failure symptom – Do diagnostics indicate a failure? – What, when, where, single, or multiple systems? – Is the failure repeatable? – Has this configuration ever worked? © Copyright Lenovo 2023...

  • Page 38: Symptom-To-Fru Index

    – If it has been working, what changes were made prior to its failing? – Is this the original reported failure? • Diagnostics version – Type and version level • Hardware configuration – Print (print screen) configuration currently in use –...

  • Page 39: Power Supply Problems

    Error FRU/Action The boot sector on the startup drive is corrupted. The drive must be formatted. Do the following: 1. Attempt to back up the data on the failing hard disk drive. 2. Using the operating system programs, format the hard disk drive.

  • Page 40: Post Error Codes

    POST error codes Each time you turn on the system, it performs a series of tests that check the operation of the system and some options. This series of tests are called the Power-On Self-Test, or POST. POST checks the following operations: •...

  • Page 41: Miscellaneous Error Conditions

    POST error message Description/Action Error code 8998 Not enough shadow RAM resources This error message is displayed for OPTION ROM, not all devices when the shadow RAM resources initialized. Suggest to remove some for option ROM are insufficient. add-on cards, or change to UEFI If the legacy option ROM is mode in BIOS setup.
  • Page 42 Message/Symptom FRU/Action Blank screen except for flashing cursor. 1. System Board 2. Primary Hard Disk Drive 3. Hard Disk Drive Cable Incorrect memory size during POST 1. Run the Memory tests. 2. Memory Module 3. System Board "Insert a Diskette" icon appears with a known-good 1.

  • Page 43: Undetermined Problems

    Message/Symptom FRU/Action Serial or parallel connector device failure (system board 1. External Device Self-Test OK? connector) 2. External Device 3. Cable 4. System Board Serial or parallel connector device failure (adapter 1. External Device Self-Test OK? connector) 2. External Device 3.
  • Page 44 ThinkCentre neo 50a 24 Gen 3 Hardware Maintenance Manual...

  • Page 45: Chapter 5. Diagnostics

    4. Run the diagnostic program. 5. Recover your operating system. See “Self-help resources” on page 40. 6. If the problem persists, contact Lenovo. UEFI diagnostic program A UEFI diagnostic program is preinstalled on the computer. It enables you to test memory modules and internal storage devices, view system information, and check and recover bad sectors on internal storage devices.

  • Page 46: Lenovo Diagnostic Tools

    If you are unable to isolate and resolve the problem after running the Vantage app, save and print the log files created by the program. You might need the log files when you speak to a Lenovo technical support representative.
  • Page 47 • Setup Guide want. • This User Guide • Regulatory Notice Lenovo Support Web site with the latest support information of the following: • Drivers and software • Diagnostic solutions https://pcsupport.lenovo.com • Product and service warranty •...
  • Page 48 ThinkCentre neo 50a 24 Gen 3 Hardware Maintenance Manual...

  • Page 49: Chapter 6. Hardware Removal And Installation

    Common tool Isolated tweezers Common tool Hexagonal socket Common tool Silicone grease Consumable tool Polyamide tape Consumable tool Mylar tape Consumable tool Eraser Consumable tool Electrical tape Consumable tool Double-sided tape Consumable tool Conductive tape Consumable tool © Copyright Lenovo 2023...

  • Page 50: Major Frus And Crus

    Note: The silicone grease can be applied to the surfaces of the microprocessor and heat sink to eliminate air gaps. The hexagonal socket is used to pick up the antenna connectors. Major FRUs and CRUs Your computer contains the following types of CRUs and FRUs: •...
  • Page 51 Chapter 6 Hardware removal and installation...
  • Page 52 Number Description Self-service CRU Optional-service CRU Computer stand (Tilt stand)* Computer stand (Liftable stand)* Smart cable clip* Rear cover USB board cable USB board bracket USB board Wi-Fi card cover* Wi-Fi card* M.2 solid-state drive* Memory module shielding Memory module System board Optical drive board cable* Optical drive board*...
  • Page 53 Power supply unit socket bracket Gaskets Heat sink thermal pads Speaker screws * For selected models For detailed FRU and CRU information, such as the FRU part numbers and supported computer models, go http://www.lenovo.com/serviceparts-lookup Chapter 6 Hardware removal and installation...

  • Page 54: System Board

    System board Description Description M.2 Wi-Fi card slot PSU ID PIN connector PSU Micro Fit connector Fan connectors Wireless charging connector M.2 solid-state drive slot Optical drive FFC connector Hard disk drive FFC connector Microphone board connector Touch cable connector Camera connector USB board connector Memory slot (DIMM2)

  • Page 55: Removing And Installing Hardware

    Description Description LVDS connector (for FHD models) Backlight connector Coin-cell battery connector Coin-cell battery Removing and installing hardware This section provides instructions on how to remove and install hardware for your computer. You can expand the capabilities of your computer and maintain your computer by removing or installing hardware. Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter 1 “Important safety information”...
  • Page 56 • Liftable stand ThinkCentre neo 50a 24 Gen 3 Hardware Maintenance Manual...
  • Page 57 Chapter 6 Hardware removal and installation...

  • Page 58: Rear Cover

    Rear cover Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. For access, do the following: 1.

  • Page 59: Usb Board

    Note: If a locking device is available, use it to lock the computer after installing the rear cover. USB board Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool.

  • Page 60: System Board Shielding

    System board shielding Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. For access, do the following: 1.

  • Page 61: M.2 Solid-State Drive And Thermal Pad

    • Do not attempt to replace the Intel Optane memory in the M.2 solid-state drive slot. Replacement of the Intel Optane memory must be done by a Lenovo-authorized repair facility or technician. • The internal storage drive is sensitive. Inappropriate handling might cause damage and permanent loss of data.
  • Page 62 – Do not touch the contact edge of the internal storage drive. Otherwise, the internal storage drive might get damaged. – Do not apply pressure to the internal storage drive. – Do not make the internal storage drive subject to physical shocks or vibration. Put the internal storage drive on a soft material, such as cloth, to absorb physical shocks.

  • Page 63: Wi-Fi Card

    Wi-Fi card Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. For access, do the following: 1.

  • Page 64: Memory Module And Shielding

    Memory module and shielding Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Attention: Do not touch the contact edge of the memory module. Otherwise, the memory module might get damaged. For access, do the following: 1.
  • Page 65 Chapter 6 Hardware removal and installation...

  • Page 66: Heat Sink And Gaskets

    Heat sink and gaskets Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. The heat sink might be very hot. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. For access, remove the following parts in order: •...

  • Page 67: Speaker

    Note: Thermal module forms an antenna effect and circulates a loop with gaskets. If routing shows negative, radiation will diffuse and the system might go abnormal. Speaker Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool.

  • Page 68: Power Switch Board

    Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury, seek medical care immediately. Never remove the cover on a power supply or any part that has the following label attached. Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no serviceable parts inside these components.

  • Page 69: System Board

    Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. For access, do the following: 1. Turn off the computer and remove all connected devices and cables. 2. Unlock any locking device that secures the computer cover. 3.

  • Page 70: Fan

    • Remove the M.2 solid-state drive and thermal pad. See “M.2 solid-state drive and thermal pad” on page 55. • Remove the Wi-Fi card. See “Wi-Fi card” on page 57. • Remove the memory module and thermal pad. See “Memory module and shielding” on page 58. •...

  • Page 71: Optical Drive Housing

    Removal steps Optical drive housing Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Attention: The internal storage drive is sensitive. Inappropriate handling might cause damage and permanent loss of data. When handling the internal storage drive, observe the following guidelines: •...

  • Page 72: 2.5-Inch Hard Disk Drive

    Removal steps 2.5-inch hard disk drive Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Attention: The internal storage drive is sensitive. Inappropriate handling might cause damage and permanent loss of data. When handling the internal storage drive, observe the following guidelines: •...

  • Page 73: 2.5-Inch Hard Disk Drive Foil

    Removal steps 2.5-inch hard disk drive foil Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Attention: The internal storage drive is sensitive. Inappropriate handling might cause damage and permanent loss of data. When handling the internal storage drive, observe the following guidelines: •...

  • Page 74: Optical Drive, Bracket And Bezel

    • Remove the M.2 solid-state drive and thermal pad. See “M.2 solid-state drive and thermal pad” on page • Remove the Wi-Fi card. See “Wi-Fi card” on page 57. • Remove the memory module and thermal pad. See “Memory module and shielding” on page 58. •...

  • Page 75: Optical Drive Board

    • Remove the M.2 solid-state drive and thermal pad. See “M.2 solid-state drive and thermal pad” on page • Remove the Wi-Fi card. See “Wi-Fi card” on page 57. • Remove the memory module and thermal pad. See “Memory module and shielding” on page 58. •...

  • Page 76: Rear Cover Bump

    • Remove the system board shielding. See “System board shielding” on page 54. • Remove the M.2 solid-state drive and thermal pad. See “M.2 solid-state drive and thermal pad” on page • Remove the Wi-Fi card. See “Wi-Fi card” on page 57. •...

  • Page 77: Microphone Module

    • Remove the heat sink and gaskets. See “Heat sink and gaskets” on page 60. • Remove the speaker. See “Speaker” on page 61. • Remove the system board. See “System board” on page 63. • Remove the optical drive housing. See “Optical drive housing” on page 65. Removal steps Microphone module Prerequisite...

  • Page 78: Camera Module

    • Remove the rear cover. See “Rear cover” on page 52. • Remove the USB board. See “USB board” on page 53. • Remove the system board shielding. See “System board shielding” on page 54. • Remove the M.2 solid-state drive and thermal pad. See “M.2 solid-state drive and thermal pad” on page •...
  • Page 79 Before you open the computer cover, turn off the computer and wait several minutes until the computer is cool. For access, remove the following parts in order: • Remove the computer stand. See “Computer stand” on page 49. • Remove the rear cover. See “Rear cover” on page 52. •...
  • Page 80 ThinkCentre neo 50a 24 Gen 3 Hardware Maintenance Manual...

  • Page 81: Main Frame

    Main frame Prerequisite Before you start, read Generic Safety and Compliance Notices, and print the following instructions. Avoid contact with hot components inside the computer. During operation, some components become hot enough to burn the skin. Before you open the computer cover, turn off the computer, disconnect power, and wait approximately 10 minutes for the components to cool.

  • Page 82: Front Bezel

    • Remove the power supply unit. See “Power supply unit” on page 61. • Remove the power switch board. See “Power switch board” on page 62. • Remove the system board. See “System board” on page 63. • Remove the fan. See “Fan” on page 64. •...
  • Page 83 • Remove the power switch board. See “Power switch board” on page 62. • Remove the system board. See “System board” on page 63. • Remove the fan. See “Fan” on page 64. • Remove the optical drive housing. See “Optical drive housing” on page 65. •...
  • Page 84 ThinkCentre neo 50a 24 Gen 3 Hardware Maintenance Manual...

  • Page 85: Chapter 7. Notices And Trademarks

    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.
  • Page 86 Actual results may vary. Users of this document should verify the applicable data for their specific environment. This document is copyrighted by Lenovo and is not covered by any open source license, including any Linux agreement(s) which may accompany software included with this product. Lenovo may update this document at any time without notice.

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