Asus repair. Audio. (Lesson 3)

AUDIO

South
Bridge

5-pin serial data transaction :
BIT_CLK, SYNC, RESET,
SDATA_IN, SDATA_OUT

Audio Bus

Azalia

AC’97

AUDIO(Azalia) Signals Description

AUDIO(Azalia) Signals Description

AUDIO(Azalia) Signals Description

AUDIO(Azalia) Signals Description

AUDIO(Azalia) Signals Description

Repair Flow Chart

Repair Technique-Visual Inspection

1

Visual Inspection to check Audio connector, Audio chip &

Repair Technique-Check Bios & Jumper setting

2-1

2-2

Check Audio setting is enable in

Repair Technique-Measure Audio Voltage

3-1

3-2

Use Multi-Meter to measure AUD +5V & 3.3V.
P.S.

Repair Technique-Measure Audio Clock

4-1

4-2

Use Oscilloscope to measure Audio CLK 24.576Mhz (from

Repair Technique-Measure Audio signals

5

Use Multi-Meter to measure other Audio signals’ bias