Lenovo Yoga 3 Service Manual
Have a look at the manual Lenovo Yoga 3 Service Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 207 Lenovo manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.
17 General checkout General checkout This chapter presents the following information: • “What to do first” on page 20 • “Power system checkout” on page 21 Before you go to the checkout, make sure to read the following important notes: Important notes: • Only certified trained personnel can service the computer. • Before replacing any FRU, read the entire page on removing and replacing FRUs. • Carefully remove screws for reuse when replacing FRUs. • Be extremely careful during such write operations as copying, saving, or formatting. Drives in the computer that you are servicing sequence might have been altered. If you select an incorrect drive, data or programs might be overwritten. • Replace an FRU only with another FRU of the correct model. When you replace an FRU, make sure that the machine model and the FRU part number are correct by referring to the FRU parts list. • An FRU should not be replaced just because of a single, unreproducible failure. Single failures can occur for a variety of reasons that have nothing to do with a hardware defect, such as cosmic radiation, electrostatic discharge, or software errors. Consider replacing an FRU only when a problem recurs. If you suspect that an FRU is defective, clear the error logs and run the test again. If the error does not recur, do not replace the FRU. • Be careful not to replace a nondefective FRU.
18 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual What to do first When you do return an FRU, you must include the following information in the parts exchange form or parts return form that you attach to it: 1. Name and phone number of servicer 2. Date of service 3. Date on which the machine failed 4. Date of purchase 5. Procedure index and page number in which the failing FRU was detected 6. Failing FRU name and part number 7. Machine type, model number, and serial number 8. Customer’s name and address N o t e f o r w a r r a n t y : D u r i n g t h e w a r r a n t y p e r i o d , t h e c u s t o m e r m a y b e responsible for repair costs if the computer damage was caused by misuse, accident, modification, unsuitable physical or operating environment, or improper maintenance by the customer. The following is a list of some common items that are not covered under w a r r a n t y a n d s o m e s y m p t o m s t h a t m i g h t i n d i c a t e t h a t t h e s y s t e m w a s subjected to stress beyond normal use. Before checking problems with the computer, determine whether the damage is covered under the warranty by referring to the following list: The following are not covered under warranty: • LCD panel cracked from the application of excessive force or from being dropped • Scratched (cosmetic) parts • Distortion, deformation, or discoloration of the cosmetic parts • Plastic parts, latches, pins, or connectors that have been cracked or broken by excessive force • Damage caused by liquid spilled into the system • Damage caused by the improper insertion of a PC Card or the installation of an incompatible card • Improper disk insertion or use of an optical drive • Diskette drive damage caused by pressure on the diskette drive cover, foreign material in the drive, or the insertion of a diskette with multiple labels • Damaged or bent diskette eject button • Fuses blown by attachment of a nonsupported device • Forgotten computer password (making the computer unusable) • Sticky keys caused by spilling a liquid onto the keyboard • Use of an incorrect AC adapter on laptop products The following symptoms might indicate damage caused by nonwarranted activities: • Missing parts might be a symptom of unauthorized service or modification. • If the spindle of a hard disk drive becomes noisy, it may have been subjected to excessive force, or dropped.
19 General checkout Power system checkout To verify a symptom, follow the steps below: 1. Turn off the computer. 2. Connect the AC adapter. 3. Make sure that power is supplied when you turn on the computer. 4. Turn off the computer. 5. Disconnect the AC adapter. 6. Make sure that the battery pack supplies power when you turn on the computer. If you suspect a power problem, see the appropriate power supply checkout: • “Checking the AC adapter” on page 21 • “Checking operational charging” on page 21 Checking the AC adapter You are here because the computer fails only when the AC adapter is used. • If the power-on indicator does not turn on, check the power cord of the AC adapter for correct continuity and installation. • I f t h e c o m p u t e r d o e s n o t c h a r g e d u r i n g o p e r a t i o n , g o t o “ C h e c k i n g operational charging”. To check the AC adapter, follow the steps below: 1. Unplug the AC adapter cable from the computer. 2. Measure the output voltage at the plug of the AC adapter cable. See the following figure: Note: Output voltage for the AC adapter pin No. 2 may differ from the one you are servicing. 3. If the voltage is not correct, replace the AC adapter. 4. If the voltage is acceptable, do the following: • Replace the system board. • If the problem persists, go to “Lenovo YOGA 3 Pro-1370” on page 27. Note: Noise from the AC adapter does not always indicate a defect. Checking operational charging To check whether the battery charges properly during operation, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer.
20 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual Perform operational charging. If the battery status indicator or icon is not lit, remove the battery pack and let it return to room temperature. Reinstall the battery pack. If the charge indicator or icon is still off, replace the battery pack. If the charge indicator is still not lit, replace the system board.
21 Related service information Related service information This chapter presents the following information: • “Restoring the factory contents by using OneKey Recovery” on page 23 • “Passwords” on page 24 • “Power management” on page 25 Restoring the factory contents by using OneKey Recovery Restore of factory default The Lenovo YOGA 3 Pro-1370 computer comes with pre-installed OneKey Recovery System.In order to save application files and the initial backed up files of the system, the hard disk in a Lenovo computer includes a hidden partition when it is shipped. If you need to restore the system to the point of your first boot up, just enter Lenovo OneKey Recovery System and run System Recovery . For details of OneKey Recovery System, see the User Guide for Lenovo OneKey Recovery system . Note: This will delete all the new data on the system partition (C drive), which is not recoverable. Make sure to back up your critical data before you perform this action.
22 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual Passwords As many as three passwords may be needed for any Lenovo computer: the power-on password (POP), the hard disk password (HDP), and the supervisor password. If any of these passwords has been set, a prompt for it appears on the screen whenever the computer is turned on. The computer does not start until the password is entered. Power-on password A power-on password (POP) protects the system from being powered on by an unauthorized person. The password must be entered before an operating system can be booted. Hard-disk password There are two hard-disk passwords (HDPs): + User HDP - for the user + Master HDP - for the system administrator, who can use it to get access to the hard disk drive even if the user has changed the user HDP Attention: If the user HDP has been forgotten, check whether a master HDP has been set. If it has, it can be used for access to the hard disk drive. If no master HDP is available, neither Lenovo nor Lenov authorized service technicians provide any services to reset either the user or the master HDP, or to recover data from the hard disk drive. The hard disk drive can be replaced for a scheduled fee. Supervisor password A supervisor password protects the system information stored in the BIOS. The user must enter the supervisor password to get access to the BIOS and change the system configuration. Attention: If you forget the password, there is no service procedure to reset the password. The system board must be replaced for a scheduled fee.
23 Related service information Power management Note: Power management modes are not supported for an APM operating system. To reduce power consumption, the computer has two power management modes: screen blank and sleep (standby). Screen blank state If the time set on the “Turn off monitor” timer in the operating system expires, the LCD backlight turns off. You can also turn off the LCD backlight by pressing Fn + ` . To end screen blank state and resume normal operation, press Fn + ↑ . Putting the computer to sleep or shutting it down When you have finished working with your computer, you can put it to sleep or shut it down. Putting your computer to sleep If you will be away from your computer briefly, put the computer to sleep. When the computer is in sleep mode, you can quickly wake it to resume use, bypassing the startup process. To put the computer to sleep, do one of the following: • Close the display lid. • Press the Power button. • Press and hold or right-click the Start button in the lower-left corner and select Shut down → Sleep. • Open the charms and then select Settings → Power → Sleep. Note: Put your computer to sleep before you move it. Moving your computer while the hard disk drive is spinning can damage the hard disk, causing loss of data. To wake the computer, do one of the following: • Press any key on the keyboard. (Notebook mode only) • Press the Power button. • Press the Windows button.
24 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual Shutting down the computer If you are not going to use your computer for a long time, shut it down. To shut down your computer, do one of the following: • Open the charms bar and select Settings → Power → Shut down. Chapter 2. Starting to use Windo\fs 8.1 19 „ Shutting do\fn the co\bputer If yo u are not g oing t o use yo ur comp uter for a lo ng ti me, sh ut it dow n. To sh ut dow n yo ur comp uter, do o ne of the follow ing\f Ope n t he charms bar a nd selec t Settin gs → Power → Shut down . \b ight-cl ick the Star t b utt on in t he lower-lef t cor ner a nd selec t Shut down or sig n out → Shut down . • Right-click the Start button in the lower-left corner and select Shut down or sign out → Shut down . Chapter 2. Starting to use Windo\fs 8.1 19 „ Shutting do\fn the co\bputer If yo u are not g oing t o use yo ur comp uter for a lo ng ti me, sh ut it dow n. To sh ut dow n yo ur comp uter, do o ne of the follow ing\f Ope n t he charms bar a nd selec t Settin gs → Power → Shut down . \b ight-cl ick the Star t b utt on in t he lower-lef t cor ner a nd selec t Shut down or sig n out → Shut down .
25 Related service information • On the Start screen, click and select Shut down. 20 Chapter 2. Starting to use Windo\fs 8.1 On t he Star t scree n, cl ick a nd selec t Shut down . Note\bThis opera tion depe nds on your B\fO S se tting s. Please refer to the ac tual prod uct.Note: This operation depends on your BIOS settings. Please refer to the actual product. 20 Chapter 2. Starting to use Windo\fs 8.1 On t he Star t scree n, cl ick a nd selec t Shut down . Note\bThis opera tion depe nds on your B\fO S se tting s. Please refer to the ac tual prod uct.
26 Lenovo YOGA 3 Pro-1370 Hardware Maintenance Manual Lenovo YOGA 3 Pro-1370 This chapter presents the following product-specific service references and product-specific parts information: • “Specifications” on page 26 • “Status indicators” on page 28 • “Fn key combinations” on page 29 • “FRU replacement notices” on page 30 • “Removing and replacing an FRU” on page 31 • “Locations” on page 50 • “Parts list” on page 52 Specifications The following table lists the specifications of the Lenovo YOGA 3 Pro-1370: Table 1. Specifications Feature Description Processor View the system properties of your computer.You can do this as follows: Open the Control Panel, and then select System and Security → System . Bus architecture • LP-DDR3 • PCI Express bus • DMI Graphic Chipset • Intel BDW GT2 Display • 13.3-inch Standard memory • LP-DDR3 (max 8 GB) CMOS • 256 bytes SSD • 128 GB, 256 GB, 512 GB Optical drive • NA I/O port • Combo audio jack × 2 • Micro HDMI × 1 • USB 2.0 port × 1, USB 3.0 port × 2 • 2 in 1 card reader (SD/SDHC/SDXC/MMC)