Philips 8000 Series Service Manual page 22

EN 22 5. Q551.1E LA
No
This cannot be done through the bootscript,
the I/O is on the standby µP
Disable all supply related protections and
switch off the +3V3 +5V DC/DC converter.
switch off the remaining DC/DC
3-th try?
Yes
Blink Code as
error code
Enter protection
2010-Jun-25
Service Modes, Error Codes, and Fault Finding
Timing need to be updated if
more mature info is available.
No
No
Code =
Layer1: 2
Layer2: 15
Code =
Switch AVC PNX85500 in
Layer1: 2
reset (active low)
Layer2: 53
Wait 10ms
Wait 5ms
converters
Switch Standby I/O line high
and wait 4 seconds
No
To keep this flowchart readable, the exact
display turn on description is not copied
here. Please see the Semi-standby to On
description for the detailed display startup
During the complete display time of the
Startup screen, the preheat condition of
sequence.
100% PWM is valid.
Figure 5-5 "Off" to "Semi Stand-by" flowchart (part 2)
Reset-system is switched HIGH by the
AVC at the end of the bootscript
AVC releases Reset-Ethernet, Reset-USB and
Reset-DVBs when the end of the AVC boot-
script is detected
Reset-Audio and Audio-Mute-Up are
switched by MIPS code later on in the
startup process
Bootscript ready
in 1250 ms?
Yes
Set I²C slave address
of Standby µP to (60h)
RPC start (comm. protocol)
Flash to Ram
image transfer succeeded
within 30s?
Yes
SW initialization
No
succeeded
within 20s?
Yes
Enable Alive check mechanism
MIPS reads the wake up reason
from standby µP.
Wake up reason
coldboot & not semi-
standby?
yes
Startup screen cfg file
present?
yes
200Hz set?
No
85500 sends out startup screen
85500 starts up the display.
No
Startup screen visible
Initialize audio
initialize tuner and channel decoders
Initialize source selection
Initialize video processing IC's
initialize AutoTV by triggering CHS AutoTV Init interface
Initialize Ambilight with Lights off.
Semi-Standby
back to
div. table
Reset-system is switched HIGH by the
AVC at the end of the bootscript
AVC releases Reset-Ethernet, Reset-USB and
Reset-DVBs when the end of the AVC boot-
script is detected
Reset-Audio and Audio-Mute-Up are
switched by MIPS code later on in the
startup process
Timing needs to
be updated if more
mature info is
available.
Timing needs to be
updated if more
mature info is
available.
Wait until AVC starts to
communicate
Startup screen shall only be visible when there is a coldboot to
an active state end situation. The startup screen shall not be
visible when waking up for reboot reasons or waking up to semi-
standby conditions or waking up to enter Hibernate mode..
The first time after the option turn on of the startup screen or
when the set is virgin, the cfg file is not present and hence
the startup screen will not be shown.
yes
85500 sends out startup screen
200Hz Tcon has started up the
display.
85500 requests Lamp on
Startup screen visible
18770_252_100216.eps
100216