User Guide

2.4 System Board Troubleshooting 2 Troubleshooting Procedures
2-24 Satellite R10 Maintenance Manual (960-509)
Table 2-3 Debug port (Boot mode) error status (3/9)
D port status Inspection items Details
Initialization of MCHM
Initialization of ICH4M.D31.Func0
Initialization of ICH4M.D31.Func1
Initialization of USB.Func0,1,2,7
Initialization of ICH4M.D31.Func3
Initialization of ICH4M.D31.Func5
Initialization of H/W (before DRAM
recognition)
Initialization of TI
(00h)
Initialization of PIT channel 1
(Setting the refresh interval to “30?s”)
Checking DRAM type and size (at
cold boot)
When unsupported memory is connected,
the system beeps and halts.
When DRAM size = 0, halts.
01h
Testing the stack area of SM-RAM
When it can not be used as stack area,
halts.
Configuring cache memory
Permission of L1/L2 cache
memory
Checking the access of a CMOS
(Only in Cold Boot)
When error is detected, halts
Examining the battery level of
CMOS
Checksum check of CMOS
Initializing data in CMOS (1)
Setting up of IRT status
(Setting of boot status and IRT busy flag,
The rest bits are set to 0)
02h
Storing the size of DRAM
03h
Branch of resuming (only in Cold
Boot)
When a CMOS error is detected, it does
not resume.
If “resume status code” is not set, no
resume occurs.