IBM ThinkPad 240X, Руководство по техническому обслуживанию аппаратной части

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I/O Ports Checkout
Note: Be sure to enable the serial and parallel ports in
the BIOS setup utility before performing diagnostics
tests on the I/O ports.
Also, be sure to write down the I/O address for the
serial port to identify the port in the diagnostic test.
Do perform a diagnostics checkout on the I/O ports:
1. Boot from the diagnostics diskette and start the
program.
2. Go to Diagnostics on the main menu and select
Serial Ports or Parallel Ports.
Note: If you want to do a check on the infrared port,
select Serial Ports.
3. In the Serial Port Test Category, you can check four
items:
Ÿ
Registers and Interrupts
Ÿ
Internal Loopback
Ÿ
External Loopback
Ÿ
FIFO Buffers (16550A)
Move the cursor to the item you want to check, and
press Enter. Then follow the instructions on the
screen.
Note: To do an External Loopback test, you must
have a Loopback plug.
4. In the Parallel Port Test Category, you can check two
items:
Ÿ
Command And Data Port
Ÿ
External Loopback And IRQ
Move the cursor to the item you want to check, and
press Enter. Then follow the instructions on the
screen.
Note: To do an External Loopback And IRQ test,
you must have a Loopback plug.
Power Management Features
Three power management modes are available in the com-
puter system to reduce power consumption and to prolong
battery life.
Standby Mode:
In standby mode, the following
occurs:
Ÿ
The LCD backlight turns off.
Ÿ
The hard disk drive motor stops.
Events that cause the computer to enter standby mode:
Ÿ
Standby mode requested by the Fn key (Fn+F3).
The computer exits standby and resumes operation when
any key is pressed.
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ThinkPad 240X