Toshiba TLP411E, Техническое учебное пособие

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5-11
13. VARIOUS DISPLAY MODES
In this system, various LED display patterns are provided
in relation to the display modes shown in Table 5-7. Op-
erations from AC on to power on and power off will be
given below.
Data of the non-volatile memory are checked at the AC on,
and all the LED are turned on in red in the initial use. In
second or later use, all the LEDs are turned on in green and
the unit enters the standby status.
In the standby status, only the STANDBY/ON LED is
turned on in orange, and the main power is off and the lamp
power is also off.
When the power is on by pressing the STANDBY/ON key,
the unit enters a normal status in passing through follow-
ing processes.
1. The main power is on, and STANDBY/ON LED turns
on in green.
2. The lamp power is on, and LAMP LED blinks in green
for about 3s.
3. With the lamp turned on, LAMP LED turns on in
green and the unit enters the normal status.
4. If the lamp does not turn on, STANDBY/ON LED
turns on in orange, and the LAMP LED blinks for
about 1 min. and then the unit returns to the standby
status.
In the normal status, STANDBY/ON LED and the LAMP
LED are turned on in green, and the main power and the
lamp power are turned on.
When the power is turned off by pressing the STANDBY/
ON key, the unit enters the standby status in passing through
following processes.
1. When the lamp power is turned off, STANDBY/ON
LED turns on in orange.
2. The LAMP LED blinks in green for about 1 min. For
this period the lamp can not be turned on again by the
STANDBY/ON key.
3. When blinking of the LAMP LED stops, only the
STANDBY/ON LED turns on in orange. After this
the lamp can be turned on again by the STANDBY/
ON key.
4. Moreover, the fan works for about 2 min. to lower
temperature of the unit. For this period the main
power is kept turning on.
5. When the main power turns off, the fan also stops
and returns to the standby status.
If an error occurs due to some causes, the STANDBY/ON
LED turns on in red, and the error information is kept in
the display status of the LAMP and TEMP LEDs. When
the error is detected, the unit enters the standby status after
cooling down process for about 2 min. In this case, if the
error status continues, the error display is also kept and
any key entry is not accepted.
For the error due to the over time of the lamp-on time, the
error is not released until the internal timer is reset (boot-
ing the system by turning the AC on with [–], [+], and [IN-
PUT] keys pressed at the same time) after replacement of
the lamp.
Table 5-7 Table of various display modes
ON LAMP TEMP Contents Status Remedy
X X X Standby power abnormal at AC on Repair
Green Green Green Non-volatile memory OK at AC on Normal
Red Red Red Non-volatile memory NG at AC on Initialization
Orange X X Standby at off Normal
Green X X Lamp on at on Normal
Green (Green) X Lamp heat up at on Normal
Green Green X Lamp on during on Normal
Green X X Lamp off at off Normal
Orange (Green) X Lamp cooling down at off Normal
Red X X Main power abnormal at/during on Repair
Red Red X Lamp not turns on at/during on Repair or preparation failure
Red Orange X Lamp life terminated at on Works after about 2500H
Red X (Red) Air suction fan stop at on Repair
Red X (Orange) Exhaust fan stop at on Repair
Red X (Green) Fan filter open always Close
Red X Red Temperature sensor 1 abnormal always Lowers temperature inside unit
X stands for off, ( ) stands for blinking.