Mitsubishi S290U Service Manual page 3

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