Sharp GX30 Service Manual - Page 24

Checking the value of SUM

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GX30 CONFIDENTIAL 5) Checking the value of SUM When the rewrite operation is completed, a confirmation message appears with SUM. SUM also appears on handset. After 8 seconds, SUM disappears. When SET POWER SW is turned off, SUM disappears. Figure 39 Flash Loader 5.02 SUM Check End SUM = 0xdb3d Figure 40 Make sure SUM is the same between the PC and handset. The same SUM means that the rewrite operation is completed properly. If the value is different, try again to ensure completion of the operation. If the MOT file rewrite operation fails, an error message appears on handset. * The screen shot on the left shows an error in erasing Flash data. "ADR" and "STR" appear only when an error occurs in the FLASH-related operation. Start over the MOT file rewrite operation. Find the message in [4.4.3.2) Error messages for Loading loader (see page 2-18)], and follow the instructions. Error screen Flash Loader 5.02 FLASH_ERROR ERROR_ERASE ADR = 0x1000000 STR = 0xA0 Figure 41 2 - 16

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GX30
2 – 16
CONFIDENTIAL
5) Checking the value of SUM
When the rewrite operation is completed, a confirmation message appears with SUM.
Figure 39
SUM also appears on handset.
<When using a cable for upgrading>
After 8 seconds, SUM disappears.
<When using Communication Box>
When SET POWER SW is turned off, SUM disappears.
Figure 40
Make sure SUM is the same between the PC and handset.
The same SUM means that the rewrite operation is completed properly. If the value is different, try again to ensure completion of the operation.
If the MOT file rewrite operation fails, an error message appears on handset.
* The screen shot on the left shows an error in erasing Flash data.
“ADR” and “STR” appear only when an error occurs in the FLASH-related operation.
Start over the MOT file rewrite operation.
<When other error messages appear>
Find the message in [
4.4.3.2) Error messages for Loading loader
(see page 2-18)], and follow the instructions.
Figure 41
Flash Loader 5.02
SUM Check End
SUM = 0xdb3d
Error screen
Flash Loader 5.02
FLASH_ERROR
ERROR_ERASE
ADR = 0x1000000
STR = 0xA0