IBM Aptiva 2162 Series, Техническое обслуживание оборудования, Страница: 97 / 222

007
– Check the Media Console cable for continuity. See “Media Console” on
page 5-14 for pin locations.
– Replace the keyboard, Media Console host card, Media Console client
card, or Media Console cable.
– If the symptom remains, replace the system board.
008
– Disconnect the keyboard cable connector from the system board.
– Power-on the system unit.
– Check the voltage at the keyboard cable connector on the system board
as shown in Figure 2-4, after the POST.
Note: Measure voltages with respect to Ground (Pin 3).
Pin
1
2
3
4
5
6
Voltage (Vdc)
KBD Data (+5.0)
Not Used
Ground
+5.0
Clock (+5.0)
Not Used
1
6
2
3
4
5
Figure 2-4. Keyboard Connector Voltage Check
ARE THE VOLTAGES CORRECT?
Yes No
009
Replace the system board.
010
Replace the keyboard. If the symptom remains, replace the system board.
Check Procedures
2-43