No Power - Christie LX605 Service Manual

Troubleshooting

No Power

The POWER and LAMP indicators do not light
If the POWER and LAMP indicators are not lighting, check the
Fuse (F601) and Thermal switch (SW902) in the primary circuit
and SB_5V of standby power supply circuit.
- Fuse opens when the primary circuit has a error.
- Thermal switch opens when surrounding temperature of lamp
reaches around 115ºC.
AC
Check that POWER FAIL sig-
nals are correct.
L : Abnormality
Error: L
P.FAIL
Error: L
FAN LOCK
IC5201
FPGA
COOLING
FANS
<XC3S50A>
IC7801
DAC
FAN
CONTROL
<M62393>
LAMP indicator lights and other indicators blink
If the LAMP indicator is lighting and other indicators are blink-
ing, the projector detects an abnormal inside the projector.
Check following points;
- Check the secondary power supply. Error on the low power
voltage
- Check the fan operation. Error on the fan.
- Check the filter cartridge detecting switch (SW1891).
SW1891 open: Error
- Check the signal FILTER_DET supplied to IC301.
FILTER_DET Low: Error
LX505/605 Service Manual
020-000233-01 Rev.1 (12-2009)
SW902
THERMAL
PROTECTOR
F601 K6B
FUSE
K6AA
A902
POWER
POWER-ON:H
32
154 8
PW_MASTER_SDI
251 7
IC301
PW_MASTER_SDO SUB-MICON
SYSTEM
<LC87F2G>
CONTROL 41 9
PW_MASTER_SCK
&
SCAN
343
CONVERTER
<PW392>
68
281
PRESS_SENS
PW_SDA0/SCL0 PW_SDA0/SCL0
Check that IIC Bus
signals are correct.
The LAMP indicator lights and LAMP REPLACE indicator is
flashing
If the LAMP_SWIN signal is not supplied to the Lamp Ballast, the
projector cannot be turned on. Check the follows;
- Check the lamp cover and the lamp cover switch (SW901).
SW901--open: Abnormality
- Check the signals LAMP_SWIN, CHO_TXD, CHO_RXD output from
IC9885.
LOW K6A
RL601
POWER
SB_5V
SUPPLY
S16V
POWER
S6V
SUPPLY
S-6V
K6R
1 29
1 29
K8R
Network Standby: H
LAMP_DC_ON
Eco Standby: L
POWER-ON:H
10
POWER_SW
IC1853
14
LAMP_SWIN
IC9885
INVERTER
15 1
CHO_TXD
16
5
CHO_RXD Q331
IC886
PRESS
SENSOR
MAIN
Check that the Power on/off signals are correct.
- POWER_SW H: Network Standby / L: Eco Standby
- LAMP_DC_ON H: Power-on
-65-
LAMP
LP900
CJ1
A901
LAMP
BALLAST
CJ2
5 1 4
5 1 4
K8K
LAMP
K8B
COVER SW.
Q1861
3
1
2
FILTER SW.
K8E
S3.3V
1
3
FILTER_DET
3
K8C
S901
WINDS_SENS
WIND
SENSOR
IC1816
TEMP
SENSOR B
<LAMP>
K8A
IC1692
TEMP
SENSOR A
<ROOM>
K8S
IC1814
TEMP
SENSOR C
<PANEL>
SW901
SW1891