Ibm Aptiva 2142 Manual de usuario descargar pdf (Pagina 96)

(continued)

005 (continued)

DID THE SYMPTOM CHANGE?

Yes No

006

Go to Step 008.

007

– Check the Media Console cable for continuity. See “Media Console

Cable” on page 5-16 for pin locations.

– Depending on service procedures, replace the keyboard, Media Console

host card, Media Console client card, Media Console cable, or Media

Console.

– If the symptom remains, replace the system board.

008

– Power-off the system unit.

– Disconnect the keyboard cable connector from the system board (Type

2140) or from the Media Console (Type 2142).

– Power-on the system unit.

– Check the voltage at the keyboard cable connector on the system board

or the Media Console as shown in Figure 2-4, after the POST.

Note: Measure voltages with respect to Ground (Pin 3). These

measurements are for the system board (Type 2140) and for the

Media Console keyboard connector (Type 2142).

Voltage (Vdc)

KBD Data (+5.0)

Not Used

Ground

+5.0

Clock (+5.0)

Not Used

Figure 2-4. Keyboard Connector Voltage Check

(Step 008 continues)

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Ibm Aptiva 2142 Manual de usuario Pagina 96