Philips 32PFL3403D/85 Service Manual page 29

Service Modes, Error Codes, and Fault Finding
STANDBY SEQUENCE
The following flowchart depicts the Standby (plus Semi-
Standby condition) sequence:
Yes
WT61P7 STANDBYn = LOW
T~1300ms
STANDBY due
Yes
to Protection?
WT61P7 blinks LED2
according to Error Buffer
No
Note:
Blocking for
Wait 3000ms
next startup
to ensure
PSU
properly
discharged
END
(STANDBY)
Set Last Status = STANDBY
Set LED1 = OFF
PWM_DIMMING = 100%
Mute Audio, MUTEn = HIGH
BACKLIGHT_ON_OFF = LOW
WT61P7 MT5382
Wait for Panel_Off_Time_2 based on
Panel ID in ms (from Panel Flash)
Wait for Next Instruction
from MT5382
Proceed to
STANDBY?
No
Set LED1 = ON
Pass Error Buffer, Clock Info and
CEC Information to WT61P7
Figure 5-10 Standby flowchart
START
Disable RC/LKB Key
Instruct WT61P7
to turn off LED1
Stop Backlight Dimming,
Turn Off Backlight
T~200ms
AUTO-CLOCK
Yes SEMI-STANDBY
is ON?
Enable RC/LKB Key
Start to Obtain Clock Info
from Selected Source
No No
Clock
Download
Timeout =
3sec?
Yes
Disable RC/LKB Key
Switch off LVDS Signal Set Last Status = ACTIVE
Turn Off LVDS Power,
LCD_PWR_ON = HIGH
Disable RC/LKB Key
PWM_Dimming = 0%
Turn On Backlight
BACKLIGHT_ON_OFF = HIGH
T~700ms
Disable DC_PROT &
POWER_DOWN INT
Display Startup Logo for 1sec
Set Back to Last Channel
Instruct WT61P7
to go to Standby
Unmute Audio, MUTEn = LOW
T~1200ms
Enable RC/LKB Key
Note: Estimated running time.
Actual implementation to be verified.
LC8.1U LA 5.
Clock
No Download No
Complete?
Yes
Instruct WT61P7
to turn on LED1
END
(Back to ON)
EN 29
Wakeup Event
Received?
Yes
H_17740_035.eps
240108