Toshiba TLP511E, TLP510E, TLP510U, TLP511U manual Status Display Process, On-screen Display Process

5-8. Status Display Process

In the status display process, two-color lighting LEDs of DL037, DL038 and DL039 turn ON for each kind of status shown in the table below by using LED0 to LED5 terminal output of the microprocessor.

5-9. On-screen Display Process

In the on-screen display process, control signals are supplied to the OSD display IC QX003 (CD0016AM), and the OSD display IC generates character display signals at the timing determined by VD, HD and clock supplied to the IC separately.

Table 5-8-1 Contents of the status display signals and the logic

ON	LAMP	TEMP	Function	Status	Countermeasure
X	X	X	Stand-by power supply	At AC cord plugged	Repair
			abnormality
Green	Green	Green	Non-volatile memory OK	At AC cord plugged	Normal
Red	Red	Red	Non-volatile memory NG	At AC cord plugged	At initial time
Orange	X	X	Stand-by	At power off	Normal
Green	X	X	Lamp ON	At power on	Normal
Green	(Green)	X	Lamp Heat-up	At power on	Normal
Green	Green	X	Lamp Lighting	During power on	Normal
Green	X	X	Lamp OFF	At power off	Normal
Orange	(Green)	X	Lamp cool-down	At power off	Normal
Red	X	X	Main power supply	At power On/During	Repair
			abnormality
Red	Red	X	Lamp no-lighting	At power On/During	Repair or preparation failure
Red	Orange	X	Lamp lighting-lifetime	At power on	Operates after approx. 2500 H
					operation
Red	X	(Red)	Suction fan stop	At power on	Repair
Red	X	(Orange)	Exhaust fan stop	At power on	Repair
Red	X	(Green)	Fan filter open	Ever	Close
Red	X	Red	Temperature sensor	Ever	Lower internal temperature of
			abnormality		the unit.

X: Lighting OFF

( ): Blinking

5-5