Service Modes, Error Codes, and Fault Finding
EN 19
BP2.2U, BP2.3U
5.
Figure 5-5 “Off” to “Semi Stand-by” flowchart (part 3)
Yes
MIPS reads the wake up reason
from standby µP.
Semi-Stand-by
No
MPIFs should be initialized
MPIF should deliver 4 observers:
POR= 0; normal operation
MSUP = 1: Main supply is present
ASUP = 1; audio supply is present
ROK = 1; reference frequency is present (coming from AVIP)
AVIP needs to be started before the MPIF in order to have a good clock distribution.
AVIP default power-up mode is Standby. The Viper instructs AVIP via I²C to enable all the
PLLs and clocks and hence enter to Full Power mode.
Initialize tuners and HDMI
All observers present with correct state?
Log appropriate
Observer error
No
Yes
Initialize video processing ICs
- Spider (if available)
Initialize source selection
Initialize Columbus
Initialize 3D Combfilter
Initialize AutoTV
3-th try?
Log Code as
error code
SP
Enable Alive check mechanism
Wait until Viper starts to
communicate
Switch POD-MODE and ON-MODE
I/O line “high”.
Yes
Initialize PNX2015 HD subsystem
Disable all supply related protections and
switch off the +2V5, +3V3 DC/DC converter.
switch off the remaining DC/DC
converters
Wait 5ms
FHP PDP
Set?
Yes
No
Init FHP PDP
Switch PDPGO “low”
Send STBYEN = 1
PFCON = 1
VCCON = 1
to PDP display (I²C)
SDI PDP
Set?
Yes
Log display
error and enter
protection mode
Switch “on” the LVDS output of
the PNX2015 with a correct
clock frequency within 4s after
switching the POD and “on”
mode to prevent PDP display
supply protection.
Init SDI PDP
Yes
PWR-OK-PDP
received within 10s
after POD and “on” mode
toggle ?
No
SP
Switch LVDS back off if
end state is not the active
state.
These LVDS items are
SDI V3 display only !!
Wait 10ms
From part B
From part B
From part B
Switch the NVM reset
line HIGH.
Wait for the +8V6 to be detected if not yet present. (if
it does not come, the standby µP will enter a
protection mode, this is not a dead end here)
Start 4 seconds preheating timer in case of
a LPL scanning backlight LCD set.
Do not enter semi-standby state in case of an LPL
scanning backlight LCD set before 4 s preheating timer has
elapsed.
F_15400_096c.eps
260505
autonomous action
action holder: St-by
action holder: MIPS
