FIC a440 服务手册
Troubleshooting and Repair
6-18
FIC A440 Series Service Manual
6.4.8 Glidepad Interface Check
8
Check Glidepad Data
Signal
Check Audio Board CN6,
Pin2, GLPDATA Signal
Check Glidepad
signal CLK
Check Audio board CN6
Pin3, GLPCLK signal
Check Glidepad
Power
Check CN6 ( On Audio
Board ), Pin 1= 5V
Check Glidepad IRQ
Check U26 ( M38867 )
Pin 22, IRQ 12
END
NO
YES
NO
NO
NO
YES
YES
Figure 6-7
Glidepad Interface Check
6.4.9 CD-ROM Interface Check
9
Check CD-ROM
Power
Check CN12, Pin
38,39,40,41,42 = 5V
Check CD-ROM Data
Bus
Check CN12 SDD
(0~15)
Check CD-ROM
Address Bus
Check CN12, Pin
33,31,34,
SDA0,SDA1,SDA2
Check IRQ Signal
Check CN12 Pin29,
IRQ15
END
NO
YES
NO
NO
NO
YES
YES
Figure 6-8
CD-ROM Interface Check