The Printer Does Not Work; Serial Connector Cannot Be Accessed - Lenovo ThinkStation P900 Hardware Maintenance Manual

Excessive number of fragmented files
Solution: Use the Windows disk defragmentation or disk optimization feature to clean up the files.
Note: Depending on the volume of the hard disk drives and amount of data stored on the hard disk drives,
the disk-defragmentation process might take up to several hours.
• On Windows 7:
1. Close any open programs and windows.
2. Click Start ➙ Computer.
3. Right-click your C drive entry and then click Properties.
4. Click Defragment now under the Tools tab to start a disk-defragmentation process.
• On Windows 8.1:
1. Close any open programs and windows.
2. Open File Explorer.
3. Right-click your C drive entry and then click Properties.
4. Click Optimize under the Tools tab to start a disk-defragmentation process.
Insufficient memory
Solution: Install additional memory modules. For instructions on installing memory modules, see "Installing
or replacing a memory module" on page 163.
To purchase memory modules, go to:
http://www.lenovo.com

The printer does not work

Solutions:
• If you are using IEEE-approved printer signal cables, do the following:
1. Connect the printer signal cable firmly to the correct parallel, serial, or USB connector on the
computer.
2. Load the paper correctly.
3. Turn on the printer and keep the printer online.
• If you are using non-IEEE-approved printer signal cables, do the following:
1. Correctly install device drivers and software that come with the printer.
2. Assign the printer port correctly in your operating system, application program, or BIOS settings. For
more information about BIOS settings, see "Using the Setup Utility program" on page 65.
If the problem persists, run the tests described in the documentation that comes with your printer. If you
cannot correct the problem, have the computer serviced. See Chapter 12 "Getting information, help, and
service" on page 185.

Serial connector cannot be accessed

Solutions:
• Connect the serial cable to the serial connector on the computer and to the serial device. If the serial
device has its own power cord, attach the power cord to a grounded electrical outlet.
• Turn on the serial device and keep the device online.
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ThinkStation P900 Hardware Maintenance Manual