Service Modes, Error Codes, and Fault Finding
5.
Figure 5-1 Stepwise start-up diagram
Step 1
Step 2
+5V and +8V is switched on
Put Stand-by line LOW
Keep sound amplifiers muted with
sound enable = high
+8V and +5V get their nominal
level, detected by the OTC
Initialize EPLD
Activate protection algorithms for +8V and +5V
and I²C (start I²C protection the moment the
component is initialised).
Activate MSP reset
Initialize 3D Combfilter (US
only)
Initialize HIP: IF, source selection, 2fh input, video processing
Switch on the syncoutput: set_syncout_tristate= off
t<1500ms
Initialize PICNIC
Stand-by
start time extraction
stand-by bit = off
t<500ms
Read NVM identification
enable watchdog
Semi stand-by
yes
Switch On PDP
or
Initialize PDP
ON
OFF
OTC gets supply voltage
ON/OFF switch to ON
Start time extraction
Initialize tuner
Deactivate reset MSP and
Initialize MSP
Stand-by bit set ?
OTC resets, Initialise IO
pins
t<250ms
t>400ms
Step 3
Step 5
no
Read rest of NVM information
CL 36532053_064.eps
221003
FTL13U_AA_AB_312278513481.book Page 25 Thursday, December 30, 2004 1:50 PM