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Preferen-
tial order
Symptom
No power-on
Failure
SW power failure 2
Main
Power
POWER SUB
AUDIO/MOTOR
MAIN
SP Connector
SW5A (SP 2pin)
SW12 (SP 4pin)
STBY12 (SP 7pin)
Reset
Check Point
PCB
Reference
LED Indication
POWER
3
Red/Green
alternately
Orange
Red
flash
3
No power-on
SW power failure 1
Main
Power
POWER SUB
MAIN
SC Connector
SW15.5 (SC 2pin)
SW12 (SC 4pin)
SW5A (SC 6pin)
Red/Green
alternately
Orange
Red
flash 4
No power-on
FAN STOP : Intake fan
(bottom)
Main
Power
AUDIO/MOTOR
MH Connector
Red/Green
alternately
Red
Red
flash
No power-on
FAN STOP : Exhaust fan
Main
Power
AUDIO/MOTOR
MK Connector
Red/Green
alternately
Red
Red
flash 2
No power-on
FAN STOP : Intake fan
(front)
Main
Power
POWER SUB
NA Connector
Red/Green
alternately
Red
Red
flash 3
No power-on
LAMP COVER open
(POWER-ON prohibited
for safety)
Auto
POWER SUB
NX Connector (3pin)
LAMP COVER
Red/Green
alternately
---
---
No power-on
FILTER COVER 1 open
(for dust-in prevention)
Auto
POWER SUB
NX Connector (5pin)
FILTER COVER (Bottom)
Red/Green
alternately
---
---
No power-on
FILTER COVER 2 open
(for dust-in prevention)
Auto
POWER SUB
NY Connector (2pin)
FILTER COVER (Front)
Red/Green
alternately
---
---
5
No power-on
Missing thermistor (Lamp)
Auto
MAIN
SZ Connector (8pin)
Red/Green
alternately
---
Red
flash
6
No power-on
IIC bus failure (Decoder)
Auto
MAIN
IC2A2 (DECODER)
SCL2, SDA2
Red/Green
alternately
Green
Red
flash 6
7
No power-on
High intake air temperature
(outside air temperature)
Auto
Room temperature not
conforming to the
specification.
No power-on
after power-
off during
power-on
High intake air
temperature (outside air
temperature)
Auto
Room temperature not
conforming to the
specification.
Red
---
Red
flash
No power-on
after power-
off during
power-on
High temperature around
the Lamp
Auto
Covered vent
Red
---
Red
flash
2
No power-on
after power-
off during
power-on
High temperature around
the PBS (LCD)
Auto
Clogged intake at the
bottom.
Red
---
Red
flash
3
Warning
indicated by
the LED
during STBY
Warning that the end of
Lamp's life span is near
(1500 to 2000h)
Manual
Not a malfunction
Red
Red
flash
---
Warning
indicated by the
LED during
power-on
Warning that the end of
Lamp's life span is near
(1500 to 2000h)
Manual
Not a malfunction
Green
Red/Green
alternately
---
No power-on
power-on prohibited due
to the end of Lamp's life
span (more than 2000h)
Manual
Replace the lamp and reset the lamp time.
(Press the “POWER”, “
” and “
”
buttons at the same time.)
Red
Red
---
No power-on
after power-
off during
power-on
Much difference of the
intake air temperature and
the temperature around
the PBS (closed inlet)
Auto
Clogged intakes
(front , bottom)
Red
---
Red
flash
4
8
9
4
LAMP
TEMP
2
Summary of Contents for S290U
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Page 180: ...113 SYMBOL NO ADDRESS X7A1 A 3 PCB MAIN COMPONENT SIDE ...
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