2 Troubleshooting Procedures
2.4 System Board Troubleshooting
2-24
Satellite A50/TECRA A2 Maintenance Manual (960-478)
Table 2-3 D port status (4/9)
D port
status
Inspection items
Details
(F103h)
Checking the change of memory configuration
Resume error F173H
Checking CheckSum of RAM area of system BIOS
Resume error F179H
Checking CheckSum of expanded memory (Montara)
Resume error F176H
Checking CheckSum of PnP RAM
Processing resume (RESUME_MAIN)
Processing resume error
Return the CPU clock to Low
Disabling all SMI
Clearing resume status
Return to ROM
Send the area from C0000h to EFFFFh to PCI
(Disabling DRAM)
Setting up Resume error request
Copy ROM/RAM of the System BIOS
(HLT when an error occurred)
F104h
SMRAM initialization
Initializing SMRAM
Checking the factor of WakeUp
Rewriting the SMRAM base and Storing CPU state map
for BIOS
Enabling SMI only by ASMI
F105h
PCI test (at Cold boot only) and Initialization
Setting test pattern in PIT#0 of Channel 0
Initialization of the device
Which needs initialization
before PCI BUS Initialization
Checking whether test pattern set can be read
Initializing the channel 0 of a PIT
(set 55ms for the interval of interrupt timer)
Initializing the channel 2 of a PIT
(set 664Hz frequency for sound generator)
Testing the channel 1 of a PIT
(Checking whether refresh signal works properly with
the cycle of refresh interval 30µs), HLT when timeout
Testing the channel 2 of a PIT
(Checking whether speaker gate works properly)
Summary of Contents for Tecra A2 Series
Page 10: ...x Satellite A50 TECRA A2 Maintenance Manual 960 478 ...
Page 11: ...Chapter 1 Hardware Overview ...
Page 49: ...Chapter 2 Troubleshooting Procedures ...
Page 50: ...2 Troubleshooting Procedures 2 ii Satellite A50 TECRA A2 Maintenance Manual 960 478 2 ...
Page 54: ...2 Troubleshooting Procedures 2 vi Satellite A50 TECRA A2 Maintenance Manual 960 478 ...
Page 105: ...Chapter 3 Tests and Diagnostics ...
Page 106: ...3 Tests and Diagnostics 3 ii Satellite A50 TECRA A2 Maintenance Manual 960 478 3 ...
Page 197: ...Chapter 4 Replacement Procedures ...
Page 198: ...4 Replacement Procedures 4 ii Satellite A50 TECRA A2 Maintenance Manual 960 478 4 ...
Page 204: ...4 Replacement Procedures 4 viii Satellite A50 TECRA A2 Maintenance Manual 960 478 ...
Page 271: ...Appendices ...
Page 272: ...Appendices App ii Satellite A50 TECRA A2 Maintenance Manual 960 478 ...
Page 290: ...Appendices Apx B Board Layout B 6 Satellite A50 TECRA A2 Maintenance Manual 960 478 ...
Page 332: ...Appendices Apx E Key Layout E 2 Satellite A50 TECRA A2 Maintenance Manual 960 478 ...
Page 334: ...Appendices Apx F Wiring Diagrams F 2 Satellite A50 TECRA A2 Maintenance Manual 960 478 ...
Page 336: ...Appendices Apx G BIOS KBC EC Update G 2 Satellite A50 TECRA A2 Maintenance Manual 960 478 ...
Page 338: ...Appendices Apx H Reliability H 2 Satellite A50 TECRA A2 Maintenance Manual 960 478 ...