NEC AccuSync LCD51VM User manual

COLOR MONITOR
AccuSyncTM LCD51VM
MODEL ID LCD51VM(A)/-BK(A)/-BK(B)
200309
08R510AY
08R520AY
08R520BY
SERVICE MANUAL
PART NO. 599910663
1st Edition
NEC-MITSUBISHI ELECTRIC VISUAL SYSTEMS CORPORATION
JULY 2003

WARNING
The SERVICE PERSONNEL should have the appropriate technical training, knowledge and experience
necessary to:
•Be familiar with specialized test equipment, and
•Be careful to follow all safety procedures to minimize danger to themselves and their coworkers.
To avoid electrical shocks, this equipment should be used with an appropriate power cord.
This equipment utilized a micro-gap power switch. Turn off the set by first pushing power switch. Next,
remove the power cord from the AC outlet.
To prevent fire or shock hazards, do not expose this unit to rain or moisture.
This symbol warns the personnel that un-insulated voltage within the unit may have sufficient
magnitude to cause electric shock.
This symbol alerts the personnel that important literature concerning the operation and
maintenance of this unit has been included.
Therefore, it should be read carefully in order to avoid any problems.
PRODUCT SAFETY CAUTION
1. When parts replacement is required for servicing, always use the manufacturer's specified replacement.
2. When replacing the component, always be certain that all the components are put back in the place.
3. As for a connector, pick and extract housing with fingers properly since a disconnection and improper
contacts may occur, when wires of the connector are led.
4. Use a proper screwdriver. If you use screwdriver that does not fit, you may damage the screws.

CONTENTS
Page No.
USER'S MANUAL -------------------------------------------------------------------- 1-1
SERIAL NUMBER INFORMATION ---------------------------------------------- 2-1
DISASSEMBLY ----------------------------------------------------------------------- 3-1
ADJUSTMENT PROCEDURES --------------------------------------------------- 4-1
INSPECTION ---------------------------------------------------------------------------- 5-1
TROUBLE SHOOTING -------------------------------------------------------------- 6-1
CIRCUIT DESCRIPTION ------------------------------------------------------------ 7-1
REPLACEMENT PARTS LIST ---------------------------------------------------- 8-1
BLOCK DIAGRAM ------------------------------------------------------------------- 9-1
SCHEMATIC DIAGRAMS ---------------------------------------------------------- 10-1
PACKING SPECIFICATION -------------------------------------------------------- 11-1

1-1
User's Manual
1. A Version
AccuSync
TM
LCD51VM/LCD71VM

1-2
W
arn
i
ng .................................................................................................................... 1
C
on
t
en
t
s ................................................................................................................. 2
Quic
k
Start .............................................................................................................
3
C
ontro
l
s ...................................................................................................................7
Recommen
d
e
d
Use .............................................................................................. 10
Sp
ec
i
f
ications .......................................................................................................12
F
eatures ............................................................................................................... 14
Tr
ou
bl
es
h
ooting ................................................................................................... 15
R
efe
r
e
n
ces .............................................................................................................
1
6
Limite
d
Warranty ................................................................................................. 17
T
C
O
‘
99 .................................................................................................................. 18
Av
ert
i
ssement ......................................................................................................21
C
on
t
enu................................................................................................................. 22
Mise en marc
h
e rapi
d
e ...................................................................................... 23
Co
mman
d
es .......................................................................................................... 27
Usage recommand
é
............................................................................................ 3
0
Sp
é
cifica
t
i
on
s
......................................................................................................
32
Fonct
i
ons ............................................................................................................. 34
D
é
pannage ............................................................................................................ 35
R
é
f
é
rences ........................................................................................................... 36
Ga
r
antie limit
é
e .................................................................................................. 3
7
T
C
O
‘
99 .................................................................................................................. 38
Index

1-3
1
CAUTIO
N
: TO REDUCE THE RISK OF ELECTRIC SHOCK, MAKE SURE POWER CORD IS U
N
PLUGGED FROM
WALL SOCKET. TO FULLY DISE
N
GAGE THE POWER TO THE U
N
IT, PLEASE DISCO
NN
ECT THE POWER
CORD FROM THE AC OUTLET. DO NOT REMOVE COVER
(
OR BACK
)
. NO USER SERVICEABLE PARTS
I
N
SIDE. REFER SERVICI
N
G TO QUALIFIED SERVICE PERSO
NN
EL.
T
h
i
s
symbol warns user that uninsulated voltage within the unit may have sufficient magnitude to cause
electric shock. Therefore, it is dangerous to make any kind of contact with any part inside this unit.
This symbol alerts the user that important literature concerning the operation and maintenance o
f
thi
s
unit has been included. There
f
ore, it should be read care
f
ully in order to avoid any problems
.
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s
e
r
'
s
a
u
t
h
o
r
i
t
y
t
o
o
p
e
r
a
t
e
t
h
e
e
q
u
i
p
m
e
n
t
.

1-4
2
C
on
t
en
ts
*R
emem
b
er to save your origina
l
b
ox an
d
pac
k
ing materia
l
to transport or s
h
ip t
h
e monitor.
Your new NEC AccuSync LCD monitor
b
ox* s
h
ou
ld
contain t
he
f
ollowing:
•
AccuSync LCD monitor wit
h
ti
l
t
b
ase • Au
d
io Ca
ble
•
Po
w
er Cor
d
• Vi
d
eo Signa
l
Ca
ble
•
User
’
s Manu
a
l
•
B
as
e
stan
d
A
A
ccuSync LCD monitor
(
base stand not connected
)
B
ase
St
an
d

1-5
3
Qu
i
ck Star
t
To
attac
h
t
h
e Base to t
h
e LCD Stan
d:
1. Insert the
f
ront o
f
the LCD Stand into the holes in the
f
ront o
f
the Base
.
2. Next, position the locking tabs on the back side o
f
the LCD Stand with the holes on the
Base. Lower t
h
e Stan
d
unti
l
l
oc
k
ing ta
b
s are secure
.
To
attach the AccuSync LCD monitor to your system,
f
ollow these instructions
:
1. Turn o
ff
the power to your computer
.
2. For the PC with Analog output: Connect the 15-pin mini D-SUB signal cable to the
connector o
f
the display card in your system
gp
(
Figure A.1
)
. Tig
h
ten a
ll
screws
.
For t
h
e MAC: Connect t
h
e AccuSync Macintos
h
ca
bl
e a
d
apter to t
h
e computer, t
h
e
n
attac
h
t
h
e 15-pin mini D-SUB signa
l
ca
bl
e to t
h
e AccuSync Macintos
h
ca
bl
e a
d
apte
r
(
Figure A.2
)
. Tig
h
ten a
ll
screws
.
NOTE: To o
b
tain t
h
e AccuSync Macintos
h
ca
bl
e a
d
apter, ca
ll
NEC-Mitsu
b
is
h
i E
l
ectronic
s
Display o
f
America, Inc. at [phone]
.
3. Connect the 15-pin mini D-SUB o
f
the video signal cable to the appropriate connecto
r
on the back o
f
the monito
r
(
Figure B.1
)
. Connect t
h
e au
d
io ca
bl
e to AUDIO-INPUT o
n
the back o
f
the monitor and the other end to the “Audio out” terminal o
f
the computer
.
Headphones may be connected to the “Headphones” output on the back of the
monitor
“
”. While the headphones are connected, the sound from the speakers will
ypp
be disabled. Headphones can be purchased
f
rom your local electronics store
.
4. Connect one end o
f
the power cord to the LCD and the other end to the power outlet
.
P
l
ace t
h
e vi
d
eo signa
l
ca
bl
e an
d
power cor
d
b
etween t
h
e ca
bl
e
h
o
ld
e
r
(
Figure B.1
)
.
NOTE: Adjust the position o
f
cables between the holder to avoid damage
.
NOTE: I
f
you use this monitor at AC125-240V, please re
f
er to Recommended Us
e
section o
f
this manual
f
or proper selection o
f
power cord
.
5. Turn on the monitor with the
f
ront power button and the computer.
(
Figure C.1
)
6. No-touc
h
Auto A
d
just automatica
ll
y a
d
justs t
h
e monitor to optima
l
settings upon initia
l
setup
f
or most timings. For
f
urther adjustments, use the
f
ollowing OS
M
®
controls:
®
• Auto A
d
just Contras
t
• Auto A
d
jus
t
Re
f
er to the Controls section o
f
this User’s Manual
f
or a
f
ull description o
f
thes
e
OSM contro
l
s
.
NO
TE
:
For download in
f
ormation on the Windows
®
95/98/Me/2000/XP INF file for your AccuSync
®
monitor, re
f
er to the Re
f
erence
s
section o
f
this User’s Manual
.
NO
TE
:
I
f
you have any problems, please re
f
er to the
Tr
ou
bl
es
h
ootin
g
section o
f
this User’s Manual
.
1
Loc
k
ing Ta
bs
o
nt
B
as
e
Stan
d
B
as
e

1-6
4
Qu
i
ck Star
t
–cont
i
nue
d
Note: Some Macintosh
s
y
stems
d
o not re
q
uire
a
MacintoshCable Adapter
yqq
Figure
A
.
1
Figure
C
.
1
Figure
A
.
2
Macintos
h
Ca
ble
A
d
a
p
te
r
(not include)
pp
F
igure
B
.
1
S
u
b)
h
o
ld
e
r
H
e
a
d
p
h
o
n
e
A
u
d
i
o
i
n
p
u
t
Power
b
utto
n

1-7
5
Ti
lt
Grasp both sides o
f
the monitor screen with your hand
s
an
d
a
d
just t
h
e ti
l
t as
d
esire
d
(
F
i
gure TS.
1
)
.
Remove Monitor Stand
f
or Mountin
g
To prepare the monitor
f
or alternate mounting purposes
:
1.Disconnect a
ll
ca
bl
es
.
2.Place monitor
f
ace down on a nonabrasive sur
f
ac
e
(
Figure R.1
)
.
3.Remove the 2 screws on the stand and li
f
t o
ff
the stand
(
Figure R.1
)
.
4.Remove t
h
e 4 screws connecting t
h
e monitor to t
h
e stan
d
an
d
remove t
he
meta
l
p
l
ate
(
Figure R.2
)
.
The monitor is now ready
f
or mounting in an alternate manner
.
5.
Connect the AC cord and signal cable to the back o
f
the monito
r
(
Figure R.3
)
.
6. Reverse t
h
is process to reattac
h
stan
d.
NOTE: Use on
l
y VESA-compati
bl
e a
l
ternative mounting met
h
o
d.
NO
TE
:
Han
dl
e wit
h
care w
h
en removing monitor stan
d.
Qu
i
ck Star
t
–cont
i
nue
d
Figure T
S
.
1
Figure R.
2
F
igure
R
.
1
non-a
b
rasiv
e
sur
f
ac
e
Figure R.
3