Philips 26HFL3350D/10 Service Manual page 23

Service Modes, Error Codes, and Fault Finding
No
No
Code = 5
Switch AVC PNX8541
in reset (active low)
Wait 10ms
Switch the NVM reset
line HIGH.
Disable all supply related protections and
switch off the +2V5, +3V3 DC/DC converter.
Wait 5ms
switch off the remaining DC/DC
converters
Switch Standby
3-th try?
I/O line high.
Yes
Blink Code as
error code
SP
No
Channel decoder
TDA 10048?
- Channeldecoder type TDA10048
can be reloaded without reset .
No
Third try?
Yes
Log channel decoder error
(pulling pin of the probe interface to
ground by inserting EJTAG probe)
EJTAG probe
connected ?
No
No Cold boot?
Yes
Release AVC system reset Release AVC system reset
Feed warm boot script Feed cold boot script
Bootscript ready
in 1250 ms?
Yes
Set I²C slave address
of Standby µP to (60h)
RPC start (comm. protocol)
Flash to RAM image
No
transfer succeeded
within 30s?
Yes
SW initialization
No
Code = 53
succeeded
within 20s?
Yes
Enable Alive check mechanism
MIPS reads the wake up reason
from standby µP.
Start 4 seconds preheating timer in case of
an LPL scanning backlight LCD set .
Initialize audio
Download firmware into the channel
decoder
Yes
Downloaded
successfully ?
Yes
No
Initialize tuner , Master IF and channel
decoder
Initialize source selection
Wait until Cpipe delivers a stable output
clock
Initialize AutoTV by triggering CHS AutoTV Init interface
Do not enter Semi --Standby state in case of an LPL
scanning backlight LCD set before 4s preheating timer has
elapsed.
Semi-Standby
Figure 5-5 "Off" to "Semi Stand-by" flowchart (part 2)
Q522.2HE LA
An EJTAG probe (e.g. WindPower ICE probe) can
be connected for Linux Kernel debugging purposes.
Yes
Release AVC system reset
Feed initializing boot script
disable alive mechanism
Wait until AVC starts to
communicate
Important remark :
Input vertical frequency
changes (48/50/60Hz)
detected during startup
sequence should not be
taken into account . The
end situation should
always be safeguarded .
.
5. EN 23
I_18010_069b.eps
110608
2010-Jun-30