Lenovo N 500 Service Manual

General checkout 
This chapter presents following information: 
v   
 “What to do first” on page 24 
v 
 
 “Checkout guide” on page 25 
– 
 
 “Diagnostics using PC-Doctor for DOS” on page 26 
– 
 
 “PC-Doctor for Windows” on page 28
v
   
 “Power system checkout” on page 29 
The descriptions in this chapter apply to any Lenovo 3000 model that supports the 
PC-Doctor® for DOS diagnostics program. Some descriptions might not apply to 
your particular computer. 
Before you go to the checkout guide, be sure...

What to do first 
When you do return a 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. 
 
 Failure symptoms, error codes appearing on the display 
__ 6. 
 
 Procedure index and page number in which the failing FRU was detected 
__ 7. 
 
 Failing FRU name and part number 
__ 8....

Checkout guide 
Use the following procedures as a guide in identifying and correcting problems 
with the Lenovo 3000 computer. 
Note: The diagnostic tests are intended to test only Lenovo 3000 products. The use 
of non-Lenovo 3000 products, prototype cards, or modified options can lead to 
false indications of errors and invalid system responses. 
1.   
 Identify the failing symptoms in as much detail as possible. 
2. 
 
 Verify the symptoms. Tr y to re-create the failure by running the diagnostic test...

Diagnostics using PC-Doctor for DOS 
The Lenovo 3000 computer has a test program called PC-Doctor for DOS (hereafter 
called PC-Doctor.) Yo u can detect errors by running the diagnostics test included in 
PC-Doctor. This section is an overview of the procedure. For details that depend 
on model-unique functions, refer to “Lenovo 3000 N500” on page 43. 
For some possible configurations of the computer, PC-Doctor might not run 
correctly. To avoid this problem, you need to initialize the computer setup by...

Note: PC-Doctor menu does not mean the formal support device list. Some 
unsupported device names may appear in the PC-Doctor menu. 
 
The options on the test menu are as follows: 
 Diagnostics Interactive Tests 
v   
 Run Normal Test 
v 
 
 Run Quick Test 
v 
 
 CPU/Coprocessor 
v 
 
 Systemboard 
v 
 
 Video Adapter 
v 
 
 Fixed Disks 
v 
 
 Diskette Drives 
v 
 
 PM Memory 
v 
 
 Keyboard 
v 
 
 Video 
v 
 
 Mouse 
v 
 
 System Load 
Notes: 
 
v 
 
 In the Keyboard test in Interactive Tests, the Fn...

v   
 SMBIOS Info 
v 
 
 VESA LCD Info 
v 
 
 Hardware Events Log
Utility
 
v   
 Run External Tests 
v 
 
 Surface Scan Hard Disk 
v 
 
 Benchmark System 
v 
 
 DOS Shell 
v 
 
 Tech Support Form 
v 
 
 Battery Rundown 
v 
 
 View Test Log 
v 
 
 Print Log 
v 
 
 Save Log 
v 
 
 Full Erase Hard Drive 
v 
 
 Quick Erase Hard Drive
PC-Doctor for Windows 
This product is designed to help you troubleshoot and resolve problems related to 
your computer. Select one of the categories listed below to display...

Power system checkout 
To verify a symptom, do the following: 
1.   
 Turn off the computer. 
2. 
 
 Remove the battery pack. 
3. 
 
 Connect the ac adapter. 
4. 
 
 Check that power is supplied when you turn on the computer. 
5. 
 
 Turn off the computer. 
6. 
 
 Disconnect the ac adapter and install the charged battery pack. 
7. 
 
 Check that the battery pack supplies power when you turn on the computer.
If
 you suspect a power problem, see the appropriate one of the following power 
supply checkouts:...

Perform operational charging. If the battery status indicator or icon does not turn 
on, remove the battery pack and let it return to room temperature. Reinstall the 
battery pack. If the charge indicator or icon still does not turn on, replace the 
battery pack. 
If the charge indicator still does not turn on, replace the system board. Then 
reinstall the battery pack. If it is still not charged, go to the next section. 
Checking the battery pack 
Battery charging does not start until the Power Meter...

Related service information 
This chapter presents following information: 
v   
 “Restoring the factory contents by using Product Recovery discs” 
v 
 
 “Passwords” on page 32 
v 
 
 “Power management” on page 34 
v 
 
 “Symptom-to-FRU index” on page 36
 
 
 
Restoring the factory contents by using Product Recovery discs 
When the hard disk drive is replaced because of a failure, no Product Recovery 
program is on the new hard disk. In this case, you must use the recovery disc for 
the computer. Order...

8.   
 After you restart the computer, the computer prompts you for a supplemental 
Rescue and Recovery disc. If you have a supplemental Rescue and Recovery 
disc, click OK and insert the supplemental disc. If you do not have a 
supplemental disc, click No. 
 
9.   
 When prompted, insert the appropriate Product Recovery disc and then click 
OK. The second phase of the recovery process begins. 
10. 
 
 When all of the data has been copied from the last Product Recovery disc in 
the set, a message is...