Philips 37PF9631D/37 Service Manual page 20

EN 20 5. EJ2.0U LA
From Part A From Part B
No
Code = 5
Switch Viper in reset
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 POD-MODE and ON-MODE
3-th retry?
I/O line high.
Yes
Log Code as
error code
SP
Because of a bug in the Pacific IC, it will
very rarely not startup properly. If this
happens, only a cold boot can solve this
(removal of power supplies). Since this is
not feasible in the current SW
architecture, instead Standby mode is
entered.
Service Modes, Error Codes, and Fault Finding
From Part B
No
No No
Code = 53
Enable Alive check mechanism
MIPS reads the wake up reason
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)
- Register PIIConfig of the Pacific3:
- in case of a non 1080p display, the LVDS bit should be set to 0 (CMOS input).
- in case of a 1080p display, the LVDS bit and the Dual Bus bit should be set to 1 (double lvds input).
- POIConfig of the Pacific3:
- in case of a non 1080p display, the LVDS bit should be set to 1 with the Dual Bus bit set to 0 (lvds out)
- in case of a 1080p display, the LVDS bit and the Dual Bus bit should be set to 1 (double lvds out)
- PanelConfig register: PanelOff = 0, PanelOn = 1. P3 can always be on, switching of lvds is done through PNX.
(AVIP's need to be started before the MPIF's 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
PLL's and clocks and hence enter to Full Power mode. See FMS AVIP for further details
and the rest of the initialization.
initialize PNX2015 HD subsystem
MPIF's 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)
All observers present with correct state?
Initialize video processing IC's :
- Spider
Initialize Pacific related Ambilight settings
Initialize Ambilight with Lights off.
Semi-Standby
Figure 5-7 "Off" to "Semi Stand-by" flowchart (part 3)
From Part B
Yes
Viper SW initialization
succeeded
within 20s?
Yes
from standby µP.
Set is
SDI PDP
No
or
FHP PDP?
Yes
Yes
Was Pacific responding
to I²C?
yes
No
Yes
initialize tuners and Hirate.
Initialize source selection.
initialize Columbus
initialize 3D Combfilter
initialize AutoTV
(if applicable)
From Part B
action holder: MIPS
action holder: St-by
autonomous action
Wait until Viper starts to
communicate
Power OK-display is No Log display error
High?
MP
Log Pacific error and
No
Go to Standby
Standby
Log appropriate
Observer error
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