Philips LC8.2HA LA Service Manual page 23

Service Modes, Error Codes, and Fault Finding
STANDBY / TACT SWITCH STANDBY
Send Standby command to Digital Module
Ack received from Digital Module or > 2s
For DVB Sets only (Semistandby)
Wait for 2s
300ms
20ms
LED = RED
Wait for 3000ms
Except power tact switch
SDI PDP => CTRL_DISP1 = HIGH
FHP PDP => CTRL_DISP4 = LOW
Off Air Downloading/ Recording Mode
IBOZ send shut down command
40ms
Total = 360ms
Figure 5-9 Stand-by / Tact Switch Stand-by flowchart
LC8.2HA LA
Start
Mute Audio
BL_ADJ
(PWM duty cycle 100%)
BL_ON_OFF = LOW
Wait 300ms
Switch OFF LVDS
Wait 20ms
LCD_PWR_ON = LOW
Software Shutdown:
Standby using
No
"power key"
Yes
LED = NO LED
for Standby soft mode
Disable Power Down INT &
DC_PROT_INT
BL_ADJ = LOW
(PWM duty cycle 0%)
WP for NVM
Enable Audio Mute
Port Assignment in STANDBY
STANDBY = HIGH
Wait for 3000ms
Disable Audio Mute
End
5. EN 23
(ANTI_PLOP=LOW)
(MUTEn =HIGH)
(ANTI_PLOP =HIGH)
(MUTEn = LOW)
Sets go to standby here
Blocking for the next start up to ensure
power supply discard properly.
(ANTI_PLOP =HIGH)
(MUTEn = LOW)
I_17760_048.eps
030308
2009-Apr-10