Philips DVDR3575H/, Service Manual

Page: 117 / 195

Reference : SGP_AVS_SW_ATLAS-05-05 Classification : COMPANY RESTRICTED
Version : 0.17 Project : ATLAS_DSW
Status : Proposed Chapter : User Manual
Date : 2006-09-12 Section : Diagnostic Software (Leco+)
© Philips Electronics N.V. 2006
Philips Semiconductors Page 97 of 124
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Nucleus Name DS_HDD_LinearSurfaceScan
Nucleus Number 2109
Description Perform a linear surface scan so that most of the disc is covered.
Technical
-
Initialise the HDD connection
- Get the user input
- Generate a sequence of test sectors according to the user input
-
For every sector in the sequence do
- Read the sector and measure the time to perform this action
-
Update a list of statistics about the measurement
- Display statistical information about the test sequence
- If more than 1% above 100 ms and/or more than 0.1% above 200 msec
and/or requests above 300 msec make the result of the test fail.
Execution Time Depending on the user input and HDD size
User Input parameters in the next format:
<SECTORS> <STEP> <LOW> <HIGH>
where
- SECTORS: Specifies the number of sectors to read in each access
- STEP:
Specifies the step (in sectors) between each access.
- LOW: The start sector address of an explicit range of LBA
addresses to be used for testing. If no value is entered LBA
0 will be used
- HIGH: The end sector address of an explicit range of LBA
addresses to be used for testing. If no value is entered the
maximum LBA will be used.
The user must enter either no parameter or all parameters
If no parameters are entered the next defaults will be used:
1000 sector each access, steps of 1000 sectors and an address
range from 0 to the maximum LBA
Error Number Description
210900 Communication with the hard disk drive succeeded
210901 The initialisation of the HDD failed
210902 Invalid user input
210903 Performance failure: more than 10% above 160 ms and/or
more than 1 request in between 200 & 250ms and/or
requests above 250 msec
210904 Read error, unable to read a specified sector from disc
Example DS:> 2109 1000 1000 0 100000
210900:
Executed 100 linear seeks of 1000 sectors each
Minimum access time = 141 msec
Maximum access time = 148 msec
Average access time = 141 msec
Number of commands below 160 msec = 100
Number of commands between 160 and 200 msec = 0
Number of commands between 200 and 250 msec = 0
Number of commands above 250 = 0
Test OK @
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