Philips LC7.5E - Page 26

Service Modes, Error Codes, and Fault Finding
EN 26 LC7.5E LA5.
Figure 5-17 Semi Stand-by/Stand-by flowchart
SEMISTANDBY/ STANDBY
Start
Mute Audio
WP for NVM
STANDBYn = LOW
Software Shutdown:
BL_ON_OFF = LOW
Wait 300ms
Switch OFF LVDS
Wait 20ms
LCD_PWR_ON = LOW
End
LED = NO LED
for Standby soft mode
Standby using
“power key”
LED = RED No
Yes
For DVB Sets only (Semistandby)
SDI PDP => CTRL_DISP1 = HIGH
FHP PDP => CTRL_DISP4 = LOW
Off Air Downloading/ Recording Mode
IBOZ send shut down command
BL_ADJ
(PWM duty cycle 70%)
Enable Audio Mute
Port Assignment in STANDBY
300ms
20ms
Total = 360ms
40ms
Wait for 3000ms
Sets go to standby here
Blocking for the next start up to ensure
power supply discard properly.
Disable Power Down INT &
DC_PROT_INT
Wait for 3000ms
Except power tact switch
BL_ADJ = LOW
(PWM duty cycle 0%)
Disable Audio Mute
(ANTI_PLOP=LOW)
(MUTEn =HIGH)
(ANTI_PLOP =HIGH)
(Mute_n = LOW)
(ANTI_PLOP =HIGH)
(Mute_n = LOW)
H_17370_057.eps
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