Status Display Process; On-Screen Display Process - Toshiba TLP510E Technical Training Manual

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.
ON LAMP
X X
Green Green
Red Red
Orange X
Green X
Green (Green)
Green Green
Green X
Orange (Green)
Red X
Red Red
Red Orange
Red X
Red X
Red X
Red X
Table 5-8-1 Contents of the status display signals and the logic
TEMP Function
Stand-by power supply
X
abnormality
Green Non-volatile memory OK
Red Non-volatile memory NG
X Stand-by
X Lamp ON
X Lamp Heat-up
X Lamp Lighting
X Lamp OFF
X Lamp cool-down
Main power supply
X
abnormality
X Lamp no-lighting
X Lamp lighting-lifetime
(Red) Suction fan stop
(Orange) Exhaust fan stop
(Green) Fan filter open
Temperature sensor
Red
abnormality

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.
Status
At AC cord plugged
At AC cord plugged
At AC cord plugged
At power off
At power on
At power on
During power on
At power off
At power off
At power On/During
At power On/During
At power on
At power on
At power on
Ever
Ever
5-5
Countermeasure
Repair
Normal
At initial time
Normal
Normal
Normal
Normal
Normal
Normal
Repair
Repair or preparation failure
Operates after approx. 2500 H
operation
Repair
Repair
Close
Lower internal temperature of
the unit.
X: Lighting OFF
( ): Blinking