ViewSonic ViewPanel VGI50 User manual

Service
Manual
ViewSonic
VGI50
ViewPanel
—
Model
No.
VLCDS21457-1
15”
Active
Matrix
LCD
Color
Monitor
(Rev. 1 — April 1999)
ViewSonic®
381
Brea
Canyon
Road,
Walnut,
California
91789
USA
-
(800)
888-8583.

Copyright
Copyright © 1998 by ViewSonic Corporation. All rights reserved. No part of this publication may be
reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any. language or
computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical,
manual or otherwise, without the prior written permission of ViewSonic Corporation.
Disclaimer
ViewSonic makes no representations or warranties, either expressed or implied, with respect to the
contents hereof and specifically disclaims any warranty of merchantability or fitness for any particular
purpose. Further, ViewSonic reserves the right to revise this publication and to make changes from time to
time in the contents hereof without obligation of ViewSonic to notify any person of such revision or
changes.
Trademarks
ViewSonic is a registered trademark of ViewSonic Corporation.
All other trademarks used within this document are the property of their respective owners.
Revision History
Description Of Changes Approval
~ 4/29/99 Initial Issue
ii
VG150
Service
Manual

TABLE OF CONTENTS
PRECAUTIONS
AND
SAFETY
WARNINGS
..........cssssssssssssssecesocsssnsacsessenssesceesescenscssesseesvans
Saesalecuausudeocsslessduchsonvcatenty
1
EAU
IERIE
ages
sccc
te
zusw
ascot
Bag
ues
vv
wpseveracs
odes
savanc
up
aslsuchinsd
cau
ibe
Bika
cdo
cuaadocetaunas
asa
enttecceec
snc
ates
Pauw
ale
ana
eeapoeeheuans
2
SPECIFIC
ATION
Sisckiseuctattisstevseideg
incon
cast
aairas
dhs
nesta
neaeinsauee
vests
erika
amuse
asia
A
Neste
as
narra
eloasenaees
3~6
BOCK
DTA
RAMS
ujveseusteccssousmtatnnecetstestsastesd
vv
godeast
cesses
seas
seasiecsg
aaah
davdaatesteet
antececenveashed
waned
eae
cae
wae
tvs
7
MAIN
BOARD
VO
CONNEC
THONG.
35ui.sisizetesgisstucuctiayocdsgusadany
susuasssbsiedodvasulasabsndauasapsaiaadiadassnoeiees
escejeboianseetvecions
8~1]
BHEORN
OF
CIR
CORE
PER
A
TION
sic,
ccscsstanses
vossabssiassiaatescussvstroesuacscasthsasteatdatausteonnetalaedit
aad
avensvadleeles
12~30
WAVE
ORM
Ss
oieesces
sre
aces
eee
Miao
leah
eT
eee
tsa
ha
nit
sali
nee
ead
Mas
Olea
d
31~38
TR
OUBICE
SOOT
ING
cs
cid
suchetenshuonsiastu
alesse
nasties
hasoshevadatpi
taco
ativan
Sisapebate
aes
eoseevaewea
dle
lonaleed
ones
39~4]
DPA
E
PARTS
EUS
Wes
gree
cocseive
tends
cence
dosnt
adn
cue
asp
he
ensenchscaccy
peau
ivaaeann
tote
cweglandasdeswescataate
eh
ac
dotesuescasie
ie
42
COMPETE
PAR
PG
19
0
sssvne
cutis
cisyndeesszonacescsccatog
te
ssntic
faved
onesphives
pas
sates
ciate
eucoisdaaioes
cual
toapus
sraceseeatinclactanas
43~58
SCHEMATIC
DORA.
WIEING
cece
snes
svedscuesataubossdansaesovsateasuatesscien
sealcuttelelih
Sandaeassecadiadcaeisvateend
ala
ae
Maeda
ease
ulate
59
er
y~ayesy~er~aee
ere
iii
VG150
Service
Manual

ViewSonic
Service
Manual
April
1999
-
Version
1.0
VG150
ene
A
FCC INFORMATION
This
equipment
has
been
tested
and
found
to
comply
with
the
limits
of
a
Class
B
digital
device,
pursuant
to
part
15
of
the
FCC
Rules.
These
limits
are
designed
to
provide
reasonable
protection
against
harmful
interference
in
a
residential
installation.
This
equipment
generates,
uses
and
can
radiate
radio
frequency
energy,
and
if
not
installed
and
used
in
accordance
with
the
instructions,
may
cause
harmful
interference
to
radio
communications.
However,
there
is
no
guarantee
that
the
interference
will
not
occur
in
a
particular
installation.
If
this
equipment
does
cause
unacceptable
interference
to
radio
or
television
reception,
which
can
be
determined
by
turning
the
equipment
off
and
on,
the
user
is
encouraged
to
try
to
correct
the
interference
by
one
or
more
of
the
following
measures
--
reorient
or
relocate
the
receiving
antenna;
increase
the
separation
between
equipment
and
receiver;
or
connect
the
into
an
outlet
on
a
circuit
different
from
that
to
which
the
receiver
is
connected.
FCC WARNING
To
assure
continued
FCC
compliance,
the
user
must
use
a
grounded
power
supply
cord
and
the
provided
shielded
video
interface
cable
with
bonded
ferrite
cores.
Also,
any
unauthorized
changes
or
modifications
to
Amtrak
products
will
void
the
user’s
authority
to
operate
this
device.
Thus
AmTRAN
will
not
be
held
responsible
for
the
product
and
its
Safety.
:
CE CERTIFICATION
This
device
complies
with
the
requirements
of
the
EEC
directive
89/336/EEC
with
regard
to
“Electromagnetic
compatibility.”
SAFETY CAUTION
Use
a
power
cable
that
is
properly
grounded.
Always
use
the
AC
cords
as
follows
—
USA
(UL);
Canada
(CSA);
Germany
(VDE);
Switzerland
(SEV);
Britain
(BASEC/BS);
Japan
(Electric
Appliance
Control
Act);
or
an
AC
cord
that
meets
the
local
safety
standards.
Page 1
iContidential Do Not Copy,
me eerial 0 Not Copy,

Service
Manual
ViewSonic
VG150
April
1999
-
Version
1.0
Features
The
VG150
are
world
class
TFT
LCD
analog
display
monitors
that
include
the
following
features.
1. Digital On Screen Display Controls
User
friendly
buttons
(Power,
Function,
Select
(+
/-),
Auto)
allowing
for
picture
perfect
quality.
User
can
define
display
mode
or
reset
to
default
settings.
Help
menu
contains:
Auto-Sync;
Contrast;
Brightness;
OSD
H-Pos;
OSD
V-Pos;
Color; LCD Adjust; MISC and Exit.
2. Power Supply Support
Ability
to
accept
voltages
from
100~240
Vac
(Universal),
thus
allowing
a
full
range of input AC power supply.
3. Power Saving System
This
environmental
friendly
product
is
able
to
reduce
power
consumption
by
75%
in
Suspend
Mode
and
by
more
than
95%
in
Off
Mode.
4. Frequency Range
Monitor
can
support
video
standards
from
VGA
to
XGA,
where
Horizontal
frequency
ranges
from
30~62kHz
and
Vertical
frequency
ranges
from
50~75 Hz.
Page 2
Confidential Do Not Copy

ViewSonic
April 1999 - Version 1.0
SPECIFICATIONS
Service Manual
VG150
Characteristic
LCD Panel
Maximum Viewing
Angles
Signal Input
Connector
Maximum Resolution
Video Bandwidth
Display Area
Power Voltage
Power Consumption
Operating Conditions
Storage Conditions
Dimensions
Weight
ADI, 15.0 inch diagonal viewable screen, Anti-glare TFT
Active Matrix Panel, 0.297 mm pixel pitch, TDK Inverter
Left : 60°
Right : 60°
Up : 45°
Down : 55°
Video : RGB analog, 0.7 Vp-p, 75 ohms
Sync : H/V separate or composite sync, TTL
Horizontal : 30~62 kHz
Vertical : 50~75 Hz
15 Pin Mini D-Sub
1024x768
100 MHz nominal
304.4mm (H) x 228.1mm (V)
100~240Vac @ 50 ~ 60 Hz (auto switch), 12Vdc 3A
38 W max.
Temperature : 325 to 1047 (07 to 407)
Humidity : 10% to 90% (no condensation)
Altitude : To 10,000 feet
Temperature : -4& to +1402 (-202 to +607)
Humidity : 10% to 90% (no condensation)
Altitude : To 10,000 feet
Physical : 390mm (W) x 372mm (H) x 138mm (D)
5.0 kg
Page 3
(Confidential Do Not Copy:

Service Manual
VG150
ON SCREEN DISPLAY
ViewSonic
April 1999 - Version 1.0
OSD (On Screen Display) function is supported on each the TFT LCD analog
display monitors and is controlled by four easy to use buttons — Power, Function,
Select (+), Select (-), Auto.
Sub-Funetion
Auto Sync
Contrast
Brightness
OSD H-POS
OSD V-POS
Color
LCD Adjust
Preset 1
Preset 2
Red
Green
Blue
H Size
H Position
V Position
Fine Tune
Auto sync
Invisible
Smoothing
Information
Language
Recall
Main menu
Page 4
(Contidential Do Not Copy,
0 ~ 100
0 ~ 100
0 ~ 100
0 ~ 100
0 ~ 100
0~ 100
0 ~ 100
ON/OFF
ON/OFF

ViewSonic Service Manual
April 1999 - Version 1.0 , VG150
FACTORY PRESET TIMINGS
This timing chart is already preset for the TFT LCD analog display monitors.
Timing Horizontal | Horizontal | Vertical Vertical
Polarity |Frequency| Polarity | Frequency
VGA 640x350 31.47 kHz 70.08 Hz
VGA 720x400 31.46 70.08
VGA 640x400 31.46 70.08
VGA 640x480 31.47 60.05
VESA 640x480 37.86 72.81
VESA 640x480 37.50 75.00
MAC 640x480 35.00 66.66
VESA 800x600 35.15 56.25
VESA 800x600 37.87 60.31
VESA 800x600 48.07 72.18
VESA 800x600 46.87 75.00
VESA 1024x768 48.36 60.00
VESA 1024x768 56.47 70.06
SVGA 1024x768 58.03 71.94
VESA 1024x768 60.02 75.02
MAC 1024x768 60.24 74.92
Page 5
{Confidential Do Not Copy,

Service Manual
VG150
PIN ASSIGNMENT
ViewSonic
April 1999 - Version 1.0
The TFT LCD analog display monitors use a 15 Pin Mini D-Sub connector as video
Pin | Description _|
input source.
oO On OO fF WN =
ek ako ke ae ee a B&B WwW HO = O
Red
Green
Blue
Ground
Ground
R-Ground
G-Ground
B-Ground
No Connection
Ground
No Connection
(SDA)
H-Sync (Composite Sync)
V-Sync
(SCL)
Page 6
{Confidential Do Not Copy,

ViewSonic Service Manual
April 1999.- Version 1.0 VG150
BLOCK DIAGRAM
COMPLETE TFT LCD DISPLAY UNIT
AC Outlet Adaptor
| |
fe see nee ;
12V | favarar 700Vac
|
}
|
ae
Main Board | Digital! ter |
t
, Signal’ | LCD
Panel
{
H
i
|
| |
MAIN BoaRD (TFT LCD DisPLay ANALOG INTERFACE CONTROL BOARD)
G-anolog
B-anolog
Digital Rout
Control Data G out
registers processor Bout
Control
Unit i
| Dot CLK
H-Sync-in
V-Sync-in
a P —
CPU haan Clock generator Soilless
ry
cog
==
i
H-Sync-out
|_vesyne _| eee eee vee
icp | 2 | a pos Data Enabie
Page 7
‘Confidential Do Not Copy,