1-22 (No.PA023)
SECTION 5
TROUBLESHOOTING
5.1
PROTECTIVE SENSOR AND PROTECTIVE SWITCH
In event of abnormal operation due to circuit or component failure, setting error or other reason, in order to prevent serious damage
to the set and preserve the integrity of peripheral equipment, sensors and switches are provided for protective functions. Cooling is
conducted at the same time a corresponding LED flashes (about 90 seconds). The LED indication with respect to the protective func-
tion is described below.
5.1.1 Protective sensor
5.1.2 Protective switch
5.2
LED (INDICATOR) WARNING INDICATIONS
5.2.1 Led indication contents
If an abnormality occurs during operation (projection), the content of the problem can be determined from flashing LED indicators.
When an LED indicates, operation (projection) automatically stops and the cool-down mode (about 60 seconds) is entered then the
stand-by mode.
: Turned on during operation
z
: Alternate Lighting/Extinction during operation [Flickering interval]
Type
Monitor objective
Location
Operating point
Function
Thermal sensor
(Thermostat)
Lamp unit
Optical block (Lamp section) 95
°
C
AC line (one side) open
Thermal sensor (IC) Set interior
(Lamp area)
TENP PWB ASS'Y
63
°
C
Power off by main CPU (emergency mode)
Thermal sensor (IC) Set exterior
(Filter area)
PROCESSOR PWB ASS'Y 58
°
C
Power off by main CPU (emergency mode)
Motor operation
detection circuit
Cooling fan
Cooling fan interior
Fan stop
Power off by main CPU (emergency mode)
Type
Monitor objective
Location
Operating point
Function
Interlock switch
Lamp cover
Optical block (Lamp section) Switch open
Control by CPU
No. Error code
Flashing LED
Flash
time
Warning cause (projector mode)
LAMP
WARNING
1
------
-
Lamp usage time has exceeded 1900 hours.
2
02
-
Lamp usage time has exceeded 2000 hours.
3
01
z
0.5sec.
No projection caused by the lamp failure.
4
06
z
0.5sec.
Lamp extinction during the projection
5
15
z
0.5sec.
The lamp cover is removed
6
11
-
SUB CPU malfunctions.
7
08
-
Internal temperature becomes extraordinarily higher.
8
09
-
Exhaust temperature at the vent is extraordinarily high or forced high due
to high ambient temperature
9
07
-
Ventilation fan in the unit is stopped. [Fan Lock]
10
16
-
Error communication in DD CPU
11
17
-
DD CPU is reset
12
18
-
DD CPU malfunctions.
