FIC a440 服务手册

 

Troubleshooting and Repair 

 

FIC A440 Series Service Manual 

6-21

 

6.4.14  Printer Port Interface Check 

14

Check BIOS Setup

Enter Correct Printer

Mode

Check Data Bus

Check RP14, RP31

Check Busy Signal

Check L107, L105

END

NO

YES

NO

NO

YES

YES

 

6.4.15  Audio Port Interface Check 

15

Check Audio Board

Power

Check Audio Board Q1, Pin2,3

= +5V

Check Audio Amp

Signal

Check Audio board U5, Check

Audio board Q2 Pin 13= 5V

Check AC97 Signal

Check Audio board U2,

Pin23, 24, 35, 36 Signal

Check MIC Amp

Check U1 Pin 6 Signal

END

NO

YES

NO

NO

NO

YES

YES

YES