-39-
LAMP
BALLAST
-ON/OFF
PFC-ON/OFF
PRESSURE
SENSOR
TEMP.
SENSOR
CIRCUIT
POWER
FAILURE
LAMP-MONIT
OR
LAMP
BALLAST units
LAMP
assemblies
PFC units
TEMP.
SENSOR
TEMP. SW
THERMAL-Switches
for LAMP assemblies
TEMP. SW
RL-12V
+B
D0 ~ D15
TEMP.
SENSOR
RESET
SWITCH
HAND OPERATED RESET
for CPU SW3801
TEMP. MONITOR
IC2541
ABNORMAL TEMP. DETECT
AND FOR FAN CONTROL
IC5801
FOR FAN CONTROL
IC886
ABNORMAL TEMP. DETECT
PTH901
TEMP. SENSOR
RESET
TEMP. SENSOR
TEMP. SENSOR
PRESSURE SENSOR
DA
T
A
BUS
BUFFER
POWER
FAILURE
Has not the temperature
switch operated?
If the temperature around FET
reaches 85 degrees, a PFC
circuit will be shut down.
Has not the temperature switch
operated?
When the temperature around a
lamp driver reaches 85 degrees, unit
lamp ballast will be shut down and a
lamp monitor signal changes from L
to H.
Have not the temperature switches operated?
Temperature switches are arranged near each lamp.
Temperature switches will operate, if temperature reach-
es 90-100 degrees.
When temperature switches have operated, lamp ballast
units will be shut down, then a projector will be turned off.
■
Note :
The CPU does not check operation of temperature
switches. Therefore, when temperature switches have
operated and a projector has shut down, WARNING
TEMP. indicator does not blink.
Temperature sensors location can see
it on "protections"( page-5).
❐
Cooling fans drive power control.
The CPU checks the temperature and
atmospheric pressure inside a projector.
And the CPU controls the drive power of
the cooling fans so the temperature inside
the projector is maintained to normal tem-
perature.
❐
Projector shut down.
The CPU performs temperature check
around the LCD panel using temperature
sensor PTH901 and inhalation air tempera-
ture sensor IC5801. If each part temperature
reaches abnormal temperature, the CPU will
turn off a projector, and will blink WARNING
TEMP.
indicator at intervals of 0.6 seconds.
Содержание PLC-XF41
Страница 69: ... 69 CXA3562R LCD DRIVER FF ...
Страница 75: ... 75 p 123 123 1 2 0 116 116 116 116 111 111 110 110 F Printed marker comes this top side Film side 101 ...
Страница 107: ...MEMO 107 ...
Страница 108: ...SANYO Electric Co Ltd jun 2003 Printed in Japan ...
Страница 128: ...Diagrams Drawings MC7 XF4100 ...