Philips 32PF9968/10 Service Manual page 23

Service Modes, Error Codes, and Fault Finding
STANDBY SEQUENCE
The following flowchart depicts the Standby (plus Semi-
Standby condition) sequence:
Yes
T8032 blinks LED2 according to
Error Buffer
T8032 START
Receive Standby Command
STANDBY due
to Protection?
No
Wait 3000ms to block next
startup to ensure PSU properly
dischaged
END
(STANDBY)
Figure 5-12 Standby flowchart
LC9.1A LA
RISC START
PBS Semistandby
No
Set Last Status = STANDBY
Disable AP RC/LKB key
Turn off LED1
Stop Backlight Dimming
PWM_DIMMING = 100%
Mute Audio, MUTEn = HIGH
Turn Off Backlight
BACKLIGHT_ON_OFF = LOW
Wait for Panel_Off_Time_2
based on Panel ID in ms (from
Panel Flash)
Switch off LVDS Signal
Wait for Panel_Off_Time_3
based on Panel ID in ms (from
Panel Flash)
Turn Off LVDS Power,
LCD_PWR_ON = HIGH
PWM_Dimming = 0%
Disable DC_PROT &
POWER_DOWN INT
Pass Error Buffer and CEC Info
to T8032
Switch IR/GPIO control from
RISC to T8032
Notify T8032 to go to Standby
5. EN 23
Yes
Turn off LED
Switch off backlight
SemiStandby
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090409
2009-Apr-10