Contents

Chapter 1. About this manual	1
Important Safety Information	1
Important information about replacing RoHS
compliant FRUs	1

Chapter 2. Safety information	3
General safety	3
Electrical safety	3
Voltage-selection switch	5
Safety inspection guide	5
Handling electrostatic discharge-sensitive
devices	6
Grounding requirements	6
Safety notices (multi-lingual translations)	6

Chapter 3. General information. . . .	29
The ThinkVantage Productivity Center program . .	29
Additional information resources	29
Specifications	29
For machine types: 7057, 7062, 7092, 9342,
9344, 9354, 9426, 9486, 9624, 9707, 9787,
9804, 9945	29
For machine types: 7061, 7090, 9353, 9421,
9485, 9623, 9625, 9705, 9786, 9795, 9935,
9946, 9953	29

Chapter 4. General Checkout	31
Problem determination tips	31
Chapter 5. Diagnostics	33
Lenovo System Toolbox	33
PC-Doctor for Windows PE	33
Running diagnostics from the Rescue and
Recovery workspace	33
PC-Doctor for DOS	34
Creating a diagnostic CD image	34
Creating diagnostic diskettes	34
Running diagnostics from the CD or
diskettes	34
Navigating through the diagnostics
programs	35
Running tests	35
Viewing the test log	36
Chapter 6. Using the Setup Utility . .	39
Starting the Setup Utility program	39
Viewing and changing settings	39
Using passwords	39
Password considerations	39

User Password	40
Administrator Password	40
Setting, changing, and deleting a password .	40
Enabling or disabling a device	40
Selecting a startup device	41
Selecting a temporary startup device . . . .	41
Selecting or changing the startup device
sequence	41
Exiting from the Setup Utility program	41

Chapter 7. Symptom-to-FRU Index .	43
Hard disk drive boot error	43
Power Supply Problems	43
Diagnostic error codes	44
Beep symptoms	61
POST error codes	62
Miscellaneous error messages	63
Undetermined problems	65
Chapter 8. Replacing FRUs (Types
7061, 7090, 9353, 9421, 9485, 9623,
9625, 9705, 9786, 9795, 9935, 9946,
9953)	67
Locating controls and connectors on the front of
your computer	67
Rear connectors	67
Removing the cover	68
Locations	69
Locating parts on the system board	71
Removing and replacing the front bezel	71
Replacing the power supply	72
Replacing the system board	73
Replacing the microprocessor	77
Replacing a memory module	79
Replacing a PCI adapter card	80
Replacing the hard disk drive	82
Replacing an optical drive	84
Replacing the diskette drive	85
Replacing the rear fan assembly	86
Replacing the front fan assembly	87
Replacing the front audio/USB assembly . . . .	89
Replacing the power switch/LED assembly . . .	89
Replacing the CMOS battery	90
Completing the FRU replacement	91

Chapter 9. Replacing FRUs (Types 7057, 7062, 7092, 9342, 9344, 9354,

7057, 9344, 9421, 7092, 3658 specifications

Lenovo has established itself as a significant player in the global technology market, particularly with its innovative line of laptops. The models 9353, 3656, 9625, 7061, and 9946 showcase the company's commitment to combining performance, portability, and cutting-edge technology.

The Lenovo 9353 is known for its sleek design and powerful performance. It features Intel's latest processors and high-speed SSD options, making it an excellent choice for professionals and creatives who require robust computing power. The 9353 is equipped with a vibrant display that enhances the visual experience, perfect for graphic design or content consumption. Its lightweight build ensures portability, making it easy to carry around.

The Lenovo 3656 stands out with its affordability without compromising on essential features. It is powered by AMD processors and offers decent graphics capabilities, ideal for everyday tasks like browsing, streaming, and office applications. The battery life is commendable, supporting all-day use for students and professionals alike. The 3656 also includes a solid build quality, ensuring durability and reliability.

Next, the Lenovo 9625 is a high-end model designed for gaming enthusiasts. With a powerful NVIDIA graphics card, this laptop delivers an immersive gaming experience with high frame rates and stunning visuals. The 9625 also comes with an advanced cooling system to prevent thermal throttling during extended gaming sessions. Its customizable RGB keyboard appeals to gamers who appreciate aesthetics alongside high performance.

The Lenovo 7061 is tailored for business users. It features enhanced security measures, including a fingerprint reader and a TPM chip to safeguard sensitive data. The 7061's display is designed for long hours of work, with anti-glare technology reducing eye strain. It also provides ample connectivity options, making it a versatile choice for professionals on the go.

Lastly, the Lenovo 9946 is a convertible laptop that offers the flexibility of a tablet and the functionality of a laptop. It boasts a touchscreen display and 2-in-1 versatility, making it suitable for various uses, from casual browsing to professional presentations. The Lenovo 9946 is powered by Intel’s latest technologies, ensuring high performance and seamless multitasking, along with a stylus for precision input.

Overall, these Lenovo models cater to different needs and preferences, all while emphasizing performance, portability, and cutting-edge technology, solidifying Lenovo's reputation in the laptop arena.

Lenovo 7090, 9486, 9421, 9353, 9485, 7061, 3656, 9426, 9342, 9354, 9344, 7062, 7057, 3658, 7092 manual Contents

Models: 7057 9344 9421 7092 3658 9485 7062 9426 7090 9342 9354 7061 9486 3656 9353

7057, 9344, 9421, 7092, 3658 specifications