Message/Symptom

FRU/Action

 

 

Computer will not RPL from server

1. Ensure that network is in startup sequence as first

 

 

device or first device after diskette.

 

2.

Ensure that network adapter is enabled for RPL.

 

3.

Network adapter (Advise network administrator of

 

 

new MAC address)

 

 

Computer will not perform a Wake On LAN® (if applicable)

1. Check power supply and signal cable connections

 

 

to network adapter.

 

2.

Ensure that the operating system settings are set to

 

 

enable Wake on LAN.

 

3.

Ensure Wake On LAN feature is enabled in

 

 

Setup/Configuration (see “Starting the Setup Utility

 

 

program” on page 37)

 

4.

Ensure network administrator is using correct MAC

 

 

address.

 

5.

Ensure no interrupt or I/O address conflicts.

 

6.

Network adapter (advise network administrator of

 

 

new MAC address)

 

7.

Replace system board

 

 

Dead computer. See “Hard disk drive boot error” on page

1. Power supply

49.

2.

System board

 

 

 

 

Diskette drive in-use light remains on or does not light

1.

Diskette drive

when drive is active.

2.

System board

 

 

3.

Diskette drive cable

 

 

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. System board

diagnostics diskette in the first 3.5-inch diskette drive.

2.

Diskette drive cable

 

 

3.

Network adapter

 

 

 

Intensity or color varies from left to right of characters

1.

Display

and color bars

2.

Video adapter (if present)

 

 

3.

System board

 

 

No power or fan not running

1. See “Power Supply Problems” on page 49.

 

2.

Replace system board

 

 

Non-system disk or disk error-type message with a

1. Diskette drive

known-good diagnostic diskette.

2.

System board

 

 

3.

Diskette drive cable

 

 

Other display symptoms not listed above (including blank

1. Display

or illegible display)

2.

System board

 

 

 

Turn on indicator or hard disk drive in-use light not on, but

1. Power switch/LED assembly

computer works correctly

2.

System board

 

 

 

 

52ThinkStation Hardware Maintenance Manual

Page 58
Image 58
Lenovo 4228, 4223, 4229 manual Check power supply and signal cable connections

4229, 4223, 4228 specifications

Lenovo has long been recognized for its commitment to producing high-quality computing solutions, and the ThinkPad line is no exception. Among its various models, the Lenovo ThinkPad series 4228, 4223, and 4229 stand out for their robust features and reliable performance, making them ideal choices for business and professional use.

The Lenovo ThinkPad 4228 series is engineered with a focus on durability and performance. One of its key features is the powerful Intel Core processor range, which ensures that users can manage demanding applications and multitask efficiently. Alongside this, the device typically comes equipped with ample RAM, providing speed and responsiveness that enhances productivity.

Moving to the ThinkPad 4223, it streamlines user experience with advanced connectivity options. The inclusion of multiple USB ports, HDMI, and Ethernet capabilities allows for seamless integration with various devices and networks. The 4223 model often houses a backlit keyboard, enabling users to work effortlessly in low-light environments. This model puts a strong emphasis on portability, making it a reliable companion for professionals on the move.

The ThinkPad 4229 takes connectivity a step further by offering options like Wi-Fi 6 and Bluetooth, ensuring fast and stable connections whether in the office or on the go. This model is often equipped with a higher resolution display, contributing to a better viewing experience for video conferencing and presentations. Its extended battery life is a notable feature, allowing users to remain productive without the constant need for recharging.

All three models in the 422x series boast Lenovo’s robust security features, including fingerprint readers and TPM (Trusted Platform Module), which safeguard sensitive data against unauthorized access. Furthermore, the reputation of Lenovo ThinkPads for their exceptional keyboard layout ensures that users can type comfortably over extended periods, reducing strain and increasing efficiency.

In summary, the Lenovo ThinkPad 4228, 4223, and 4229 models represent a blend of power, durability, and user-friendly design. With their focus on connectivity, performance, and security, these laptops cater perfectly to the needs of professionals and businesses, confirming Lenovo's status as a leading manufacturer in the world of computing technology. Whether you need a rugged workhorse for heavy tasks or a portable device for meetings, the ThinkPad series provides versatile solutions to meet any requirement.