Sony VAIO C1 PictureBook PCG-C1X, Service Manual

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PCG-C1X/C1F (U/E) 3-3
3-5. Test Items
• Audio test Group . . .
For audio testing.
No details are defined. You listens to the sound and evaluates the results.
• Battery test . . .
Test for charging and discharging of the battery.
If the battery is almost fully discharged or overcharged, an error may occur.
• Check System BIOS Revision . . .
The BIOS version will appear.
This test always ends in normal status. It’s up to you to evaluate the results.
• FDD test . . .
Test to find defects in a floppy disk drive.
Be sure to insert a floppy disk without a write-protect tab for self-Diagnostics.
If some defect is detected, the data may be lost. The data should always be backed up.
• HDD test . . .
Test for the hard-disk drive.
The recognition test is done in the start-up process with the BIOS.
• Keyboard test . . .
Test for keyboard operation.
A keyboard appears on a screen. Press the keys one by one. Pressing a function key alone will not be recognized.
Press the desired function key with the key.
If a disabled key is found, press the ESC key twice to end the test.
• IrDA test Group . . .
Communication test for IrDA.
The PCG-C1X/C1F for communication is required.
• LED test . . .
LEDs for the Power, Battery, hard-disk drive, Information, NumLock, CapsLock and ScrlLock will light one after another, in that
order.
After checking all the LEDs, press the y key.
• Memory test Group . . .
Tests for memory.
The time required for testing depends on the memory capacity.
• Modem AT Command test . . .
Test for the modem.
This checks for generation of an AT command.
No actual call is required.
• System test . . .
Tests for items on the mother board.
DMA, IRQ, the CPU, etc. are checked.