Service Modes, Error Codes, and Fault Finding
EN 35
BJ3.0E PA
5.
Figure 5-16 “Protection” flowchart
G_15960_137.eps
100306
action holder: MIPS
autonomous action
action holder: St-by
Protection
Redefine wake up reasons for protection
state and transfer to stand-by µP.
Log the appropriate error and
set stand-by flag in NVM
MP
Ask stand-by µP to enter protection state
Flash LED in order to indicate
protection state*. (see FRS)
(*): This can be the standby LED or the ON LED
depending on the availability in the set under
discussion.
SP
Switch off LCD lamp supply
Wait 250ms (min. = 200ms)
Switch off LVDS signal
Switch off 12V LCD supply within a time frame
of min. 0.5ms to max. 50ms after LVDS switch
off.
If needed to speed up this transition,
this block could be omitted. This is
depending on the outcome of the
safety investigations.
Disable all supply related protections and switch off
the +2V5, +3V3 DC/DC converter.
Switch OFF all supplies by switching HIGH the POD-
MODE and the ON-MODE I/O lines.
Switch Viper in reset state
switch off the remaining DC/DC converters
Wait 5ms
Wait 10ms
Switch the NVM reset line HIGH.
Содержание BJ3.0E
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Страница 120: ...120 BJ3 0E PA 7 Circuit Diagrams and PWB Layouts Layout SSB Bottom Side Part 1 Part 1 G_15960_056a eps 060306 ...
Страница 121: ...Circuit Diagrams and PWB Layouts 121 BJ3 0E PA 7 Layout SSB Bottom Side Part 2 Part 2 G_15960_056b eps 060306 ...
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