Chapter 6
Maintenance
—
Troubleshooting
280
-
EN
G
L
ISH
Troubleshooting
Re
v
ie
w
the follo
w
ing points. For details, see the corresponding pages.
Problems
Points to be checked
Page
Power does not turn on.
f
Is the po
w
er plug
fi
r
m
ly inserted into the outlet?
—
f
Is the <
主电源
> s
w
itch set to <
关
>?
7
6
f
Is the
w
all outlet supplying electricity?
—
f
Ha
v
e the circuit breakers tripped?
—
f
Is the light source indicator <
光源
> or the te
m
perature indicator <
温度
> lighting or
blinking?
277
No image appears.
f
A
re connections to e
x
ternal de
v
ices correctly perfor
m
ed?
55
f
Is the i
m
age input selected correctly?
77
f
Is the [BRIGHT
NE
SS] adjust
m
ent setting at a
m
ini
m
u
m
?
102
f
Is the e
x
ternal de
v
ice that is connected to the projector
w
orking properly?
—
f
Is the shutter function in use?
9
1
f
Is the projection lens attached correctly?
5
2
f
Is the lens co
v
er still attached to the lens?
66
Image is fuzzy.
f
Is the lens focus set correctly?
7
9
f
Is the projection distance appropriate?
37
f
Is the lens dirty?
22
f
Is the projector installed perpendicular to the screen?
—
Color is pale or grayish.
f
A
re [
C
O
L
OR] and [TI
N
T] adjusted correctly?
102
f
Is the e
x
ternal de
v
ice connected to the projector adjusted correctly?
—
Remote control does not
respond.
f
A
re the batteries depleted?
—
f
Is the polarity of the batteries set correctly?
33
f
Is the button operation disabled by sliding the <
锁定
> button on the re
m
ote control?
2
5
f
A
re there any obstructions bet
w
een the re
m
ote control and the re
m
ote control
signal recei
v
er of the projector?
2
6
f
Is the re
m
ote control being used beyond its effecti
v
e operation range?
2
6
f
A
re other for
m
s of light, such as
fl
uorescent light, affecting the projection?
2
6
f
Is the [R
E
MOT
E
C
O
N
TRO
L
] setting in [
C
O
N
TRO
L
D
EV
I
CE
S
E
T
U
P] set to
[DIS
A
B
LE
]?
20
6
f
Is the <R
E
MOT
E
2
输入
> ter
m
inal used for contact control?
300
f
Is the ID nu
m
ber setting operation correct?
9
3
Menu screen does not
appear.
f
Is the on-screen display function turned off
(
hidden
)
?
9
1
Buttons on the control
panel do not operate.
f
Is the [
C
O
N
TRO
L
P
ANEL
] setting in [
C
O
N
TRO
L
D
EV
I
CE
S
E
T
U
P] set to
[DIS
A
B
LE
]?
20
6
f
Is the <R
E
MOT
E
2
输入
> ter
m
inal used for contact control?
300
Image does not display
correctly.
f
Is the [SYST
E
M S
ELEC
TOR] selection set correctly?
108
,
14
9
f
Is there a proble
m
w
ith the e
x
ternal de
v
ice to output i
m
ages?
—
f
Is a signal
w
hich is not co
m
patible
w
ith the projector being input?
30
5
f
A
re the settings for [HDMI
输入
], [DIGIT
AL
L
I
N
K
输入
], and [S
L
OT
输入
]
m
ade
correctly?
—
Image from a computer
does not appear.
f
Is the cable too long?
—
f
Is the e
x
ternal
v
ideo output on the laptop co
m
puter set correctly?
(Ex
.
:
The e
x
ternal
output settings
m
ay be s
w
itched by pressing the “Fn
”
+ “F
3”
or “Fn
”
+ “F
10”
si
m
ultaneously. Since the
m
ethod
v
aries depending on the co
m
puter type, refer to
the user
m
anual pro
v
ided
w
ith your co
m
puter.
)
—
Image output from DVI-D
of the computer does not
appear.
f
Is [D
V
I-D
L
I
N
K] in [S
L
OT
输入
] set correctly? If it is set to [
AU
TO], the condition
m
ay
i
m
pro
v
e by changing the setting to anything other than [
AU
TO].
141
f
Is the [
E
DID S
ELEC
T] setting in [S
L
OT
输入
] set to [
E
DID
3
] or [
E
DID
2:
P
C
]?
141
f
The graphics accelerator dri
v
er of the co
m
puter
m
ay need to be updated to the
latest
v
ersion.
—
f
The condition
m
ay i
m
pro
v
e by setting [
E
DID S
ELEC
T] in [S
L
OT
输入
] and then
restarting the co
m
puter.
141
Image from HDMI
compatible device does
not appear or is disrupted.
f
Is the HDMI cable connected securely?
55
f
Turn the po
w
er of the projector and the e
x
ternal de
v
ice off and on.
—
f
Is a signal
w
hich is not co
m
patible
w
ith the projector being input?
30
5
