“Off” To “Semi Stand-By” Flowchart - Philips 40PFL7007H/12 Service Manual

EN 24 5. QFU1.1E LA
No
2012-Sep-14
Service Modes, Error Codes, and Fault Finding
Off
AC~ Mains is applied
Standby Supply starts running.
All standby supply voltages become available.
st-by µP resets, resulting in a high impedant output
stage of the I/O ports.
Initialise I/O pins of the st-by µP
- Keep AVC system in reset (internal signal)
- Switch RESET-FUSION-OUTn LOW
- Switch RESET-HDMI-MUXn LOW
- Switch RESET-ETHERNETn LOW
- Switch AUDIO-MUTEn LOW
- Switch SPLASH-ON LOW
- Switch LCD-PWR-ONn High
Switch ENABLE-WOLAN high to power Ethernet PHY
and Wifi dongle
start keyboard scanning, RC detection.
Wake up reasons are off.
Switch ON Platform supply by switching High the
STANDBYn line.
12V platform is turned on, automatically enabling the
low voltage DCDC converter outputs
Detect2 high received
within 2 seconds?
Yes
Wait 300ms
Enable the supply detection algorithm
Start AVC system
Switch following lines asap:(part of preBOOT)
(GPIO2): LOW
CTRL-DISP2 (GPIO3): LOW
CTRL-DISP3 (GPIO8): LOW
CTRL-DISP4 (BKLGON): LOW
3D-LR (PWM0): LOW
BL-SPI-CS_BL-I-CTRL (PWM1): LOW
BL-DIM (BOOST): LOW
Wait 10ms
Switch RESET-FUSION-OUTn, RESET-
HDMI-MUXn , RESET-ETHERNETn High
Figure 5-5 "Off" to "Semi Stand-by" flowchart (part 1)
Stand by or
Protection
If the protection state was left by short circuiting the
SDM pins, detection of a protection condition during
startup shall stall the startup. Protection conditions
occuring in a playing set shall be ignored. The
protection mode shall not be entered.
Switch ENABLE-WOLANn high to power Ethernet
PHY and internal Wifi dongle if Networked Standby
was Off in the Standby mode.
12V error:
No Layer1: 3
Layer2: 16
Enter protection
back to
div. table
Startup shall continue from the
moment a valid detection is received.
All display related I/O lines should be
LOW as long as the Tcon is not
powered to avoid leakage current and
tcon startup problems.
These lines will furtheron be
dynamically controlled by the mainSW.
Small delay between AVC boot and
other platform ICs is preferred to limit
rush-in current on Platform.
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