Sanyo PLC-XM150L User Manual

-70-
Troubleshooting
Temperature monitor operation
The temperature monitor system is provided to prevents
damage of optical components inside a projector from
overheat. Two protection systems are provided. Each
system operation as follows :
The temperature monitor -1:
● To control the air-flow of the cooling fans.
The CPU checks the temperature and atmospheric
pressure inside a projector. It checks a temperature
using temperature sensors IC1692, IC1814, IC1816
and it checks an atmospheric pressure using pres-
sure sensor IC886. The CPU judges data from sen-
sors and controls the air flow of the cooling fans so
the temperature inside the projector is maintained to
normal temperature.
●To shut down the projector urgently.
The CPU checks surrounding temperature of LCD
panel (IC1814), Lamp (IC1816) and intake air (IC1692).
If each part temperature reaches abnormal tempera-
ture, the CPU will turn off the projector, and will blink
WARNING TEMP. indicator. Cooling fans operate until
temperature returns to normal. Indicator will stop blink,
if temperature returns to normal.
The temperature monitor -2 :
● Temperature check of lamp :
Thermal protector (SW902) is placed near the lamp.
Thermal protector will operate, if the surrounding tem-
perature reaches 115ºC. When the thermal protector
becomes open, it cuts off the AC line to shut down the
projector immediately.
The sensor's operation is as follows:
IC886 : Pressure sensor for FAN control
IC1692 : Inside temperature monitor A (room)
IC1816 : Inside temperature monitor B (lamp)
IC1814 : Inside temperature monitor C (panel)
Temperature Abnormality
SW901
IC301
SYSTEM
CONTROL
&
SCAN
CONVERTER
<PW392>
IC5201
FPGA
<XC3S50A>
LAMP
LP900
AC
SW902
THERMAL
PROTECTOR
A902
POWER
A901
LAMP
BALLAST
Q1861
CHO_RXD
FILTER_DET
WINDS_SENS
Q331
CHO_TXD
PW_MASTER_SDI
PW_MASTER_SDO
PW_MASTER_SCK
LAMP_DC_ON
IC1853
INVERTER
IC1816
TEMP
SENSOR B
<LAMP>
IC886
PRESS
SENSOR
IC1692
TEMP
SENSOR A
<ROOM>
S901
WIND
SENSOR
IC1814
TEMP
SENSOR C
<PANEL>
IC9885
SUB-MICON
<LC87F2G>
IC7801
DAC
FAN
CONTROL
<M62393>
LAMP
COVER SW.
1 2
32
154
251
15
14
41
343
68
281
16
1
1
29
29
5 1 4
5 1 4
3
1
K8R
K6R
CJ1
CJ2
K6B
RL601
K6AA K6A
K8K
K8B
K8E
K8A
K8S
35
8
7
9
POWER-ON:H
Network Standby: H
Eco Standby: L
POWER-ON:HError: L
Error: L
MAIN
SW1891
K8C
FILTER SW.
3
1
LAMP_SWIN
10
POWER_SW
LOW
POWER
SUPPLY
POWER
SUPPLY
SB_5V
S16V
S6V
S-6V
S3.3V
PRESS_SENS
PW_SDA0/SCL0PW_SDA0/SCL0
F601
FUSE
FAN LOCK
P.FAIL
COOLING
FANS
SW902 opens at 115ºC.
WARNING TEMP. indicator blinks

Sanyo PLC-XM150L Specifications

General

Vertical scan range	48 - 100 Hz
Horizontal scan range	15 - 100 kHz
Projection technology	LCD
Contrast ratio (typical)	1000:1
Projector native resolution	XGA (1024x768)
Lamp type	NSH
Lamp power	330 W
Light source type	Lamp
Service life of light source	2000 h
Service life of light source (economic mode)	3000 h
Analog signal format system	NTSC, PAL, SECAM
S-Video inputs quantity	1
Dimensions (WxDxH)	489.5 x 371.1 x 164 mm
Noise level	38 dB
Power consumption (standby)	0.6 W
Power consumption (typical)	400 W
Power consumption (economy mode)	338 W

Weight and Dimensions

Weight	8900 g