ViewSonic 21PS User manual

Service Manual
Multi-Scan Color CRT Display
MODEL NO. 2182PS
ViewSonic
21PS
CONTENTS
SAFETY
PRECAUTIONS.
1
SERVICE
WARNING
2
GENERAL
INFORMATION
2
SPECIFICATIONS
2
DIMENSIONS
12
DISASSEMBLY
INSTRUCTIONS
‘4
CONTROL
LOCATION
v
CAUTION
FOR
ADJUSTMENT
AND
REPAIR
18
CAUTION
FOR
SERVICING
8
ADJUSTMENT
AND
CHECK
PROCEDURE
19
ADJUSTMENT
SOFTWARE
Pa
SERVICE
ADJUSTMENT
CONTROL
LOCATION.
ai
REQUIRED
ADJUSTMENT
PROCEDURE
AFTER
A
PARTS
IS
REPLACED.
ai
ADJUSTMENT
PROCEDURE
23
BLOCK
DIAGRAM
36
CONDUCTOR
VIEW
4a
SCHEMATIC
DIAGRAM
49
TROUBLE
SHOOTING
HINTS
6)
EXPLODED
VIEW
69
REPLACEMENT
PARTS
LIST
70
ViewSonic

1 CAUTION:
No
madiiication
of
any
circuit
should
be
attempted.
Service
work
snould
only
be
performed
ater
you
are
thorougriy
familia:
witn
ail
of
the
followeng
safety
checks
ang
servicing
guide
lines,
2
SAFETY
CHECK
‘Care
shoule
be
taken
while
servicing
this
CRT
cisolay
because
of
the
high
voltage
used
in
tne
deflection
circuits,
These
voltages
are
exposed
in
such
areas
as
tne
associated
flyback
and
yoke
circus,
3.
FIRE
&
SHOCK
HAZARD
2:1
insert
an
isolation
transformer
between
the
CAT
sisplay
and
AC
power
line
before
servicing
ihe
chassis
2:2
In
servicing
pay
attention
to
original
lead
dress
especially
in
the
nigh
voltage
circuit.
if
a
short
circut
is
found.
repiace
all
parts
which
have
been
overheated
as
a
result
of
the
short
cxcut
3.3
All
the
protective
devices
must
be
reinstalled
cer
orginal
design
2-4
Solgering
must
be
inspected
for
possible
cold
solder
joints,
frayed
leads.
damaged
insulation,
solder
splashes
or
sharp
solder
points.
Be
certain
to
remove
all
foreign
material
4
LEAKAGE
CURRENT
COLD
CHECK
4-1
Unplug
the
AC
cord
and
connect
a
jumoer
between
the
two
prongs
on
the
piug
4.2
Turn
tne
CRT
display
power
swten
“on”
4-3
Measure
the
resistance
value
with
an
ohmmete:
between
the
jumoered
AC
olug
and
each
exposed
metalic
part
on
the
CAT
cisplay
such
as
the
metal
frame,
screwneads,
control
sha‘ts.
etc.
When
the
exposed
metailic
part
has
a
return
patn
10
the
chassis,
the
teading
shoul
be
1.8
megonm
rrunirtum,
5
LEAKAGE
CURRENT
HOT
CHECK
Plug
the
AC
cord
cirectly
into
the
AC
outlet.
Do
rot
use
an
isolat
on
transformer
curing
tnis
check
5-2
Connect
a
1500
ohm.
10
watt
resistor.
paralleled
Dy
2.0
15
capacitor
between
each
exposes
“metallic
part
and
a
gcod
earth
ground
(as
shown
1
Fig
1)
5:3
Use
an
AC
voltmeter
with
1000
ohmvoit
or
more
sensitivity
and
measure
the
AC
voltage
across
tne
combination
1500
ohm
resistor
anc
0.1SuF
capacitor
5-4
Move
the
resistor
connection
to
each
excosed
metallic
part
and
measure
the
vollage
5:5
Reverse
the
polarity
of
the
AC
plug
in
the
AC
outlet
and
repeat
the
above
measurement,
5.6
Voltage
measured
must
not
excead
7.
voit
AVS
from
any
excosed
metallic
cart
10
ground
A
leakage
cutter
tester
may
be
used
in
the
above
not
chec*
In
whicn
case
any
current
measured
must
ro:
eed
5.0
miliame
In
the
case
of
a
measurement
ed
ng
tne
$
0
miliiams
value,
a
rework
is
19
eliminate
the
chance
of
a
shock
hazard,
SAFETY
PRECAUTIONS
Nowe:
High
votage
is
present
when
this
CRT
csply
i
operating,
Aways
discharge
tne
anade'of
he
picture
tube
tothe
display
chassis
to
prevent
shock
hazard.
mae
wary
a
"ShoUND}
Rerguenrs
Bia
eee
Sera
Pears,
Saat
ae
Fig.1
6 IMPLOSION PROTECTION
Al) ViewSonic picture tubes are equipped with an
integral implosion protection system, but care should be
taken to avoid damage and scratching during
installation. Use only ViewSonic replacement picture
tubes
7 X-RADIATION
WARNING : The only potental source of X-Radiation is
the picture tube. However when the nigh voltage
circutty § operating oroperly there is no possibiity of X-
Radiation
problem.
The
basic
precaution
which
must
5¢
exercised
1s
to
keep
the
high
voltage
at
she
following
factory-recommended level
Note:
It
is
mportant
to
use
an
accurate
periodically
calibrated
nigh
voltage
meter.
#88
IMPORTANT
SAFETY
NOTICE
“4%
ete
are
special
components
used
in
this
CAT
|
displays
which
ate
important
for
safety
These
i:
paris
ate
identifies
by
tne
ternational
symoo!
As
|
fon
the
schematic
diagram
and
on
the
replacement
carts
list.
It
1
essential
that
these
critical
parts
should
be
replaced
wiin
manufacture’s
specified
parts
to
prevent
X-
RADIATION,
shock,
fire
or
cher
hazards.
Do
not
modity
ine
original
design
without
written
permission
of
the
ViewSonic
Corp.
Company
2
on
ams
wil
voic
the
onginal
parts
ang
labor
guarantee

SERVICE WARNING
TO
PREVENT
RISK
OF
ELECTRIC
HAZARD,
TEST
BEFORE
TOUCHING.
Where,
after
operation
of
the
fuse
in
the
live
side
of
the
mains
supply,
some
components
of
the
equipment
that
remain
under
voltage
might
represent
a
hazard
during
servicing.
GENERAL INFORMATION.
4, OUTLINE
2182PS
is
21
ich
(20°V)
multi-scan
color
CRT
display
2-5
Ergonomic
design
witn
the
following
nice
features,
+
Low
emission
design
to
meet
MPR
O80
(on
sereen
display]
Control
is
newly
insreduced,
‘ESF
(Electro
stauc
hela)
free
coating
on
CAT
wwhich
alows
easy
user
adjustment.
2-6
Muti
scan
win
digital
technology
Power
saving
function,
which
helps
saving
energy.
is
8
bit
micro
computer
controls
the
circuit
operat.on
also
one
of
the
nghlights
of
this
model
to
meet
with
wide
range
signal
of
f.=30~82kHz
and
2,
FEATURES
fy
=50~160Hz.
So
VGAG40x350,
VGA640x400
2.1
Power
Saving
VGAG40x480,
SVGABOOx600,
1024x768,
1152x900
+
Built
in
Power
Saving
function
Dased
on
VESA
1280x1024
and
1600x1280
mode
are
applicable
DPMS
standard
2:7
B
Factory
presets
(3
preset
+
5
reservation),
13
+
Power
energy
shail
be
saved
by
controlling
the
user
memories
circult
in
accordance
with
power
save
signal
trom
+8
standard
modes
are
preset
at
tne
factory
{3
computer.
preset
+
5
reservation
mode)
2:2
OSD
function
+
13
user
memories
are
available
to
set
the
users
own
*
OSD
(on
screen
display)function
is
new
and
timing
ang
display
information
excellent
man-machine
interface.
2.8
Flat
Face
and
fine
cot
pitcn
Any
one
1s
able
to
set
up
the
picture
as
he
like
*
Flat
face
CRT
with
fine
ot
pitch
0.2mm
gves
a
through
OSD
menu
comfortable
sight
of
the
screen
2.3
Self
Test
function
2-9
Superior
display
performance
*
Self
Testing
picture
comes
out
by
pusning
[1]
key
*
Good
focus
by
sophisticated
gun
and
ayramic
in
the
case
of
no-connection
witn
computer
ot
focus
ercuit
power
saving
operation
*
High
onightness
This
function
shows
if
monitor
is
alive
or
not
and
can
+
Mnimized
distortion
by
correction
circut
bbe
used
for
seit
aging
test
+
Good
convergence
2.4
Power
Supply
with
hign
power
factor
‘+
Users
enjoy
full
scan
image
‘or
graphics
+ Power Supply with high power factor erabies te
utilize AC power efficiently and st will meet \ECSS5-2
SPECIFICATION
1, DIAGRAM
—{S0c06
om
$ 3
eal
v
son
5
3.1 POWER SW, LED, |1-key (MENU). 7-xey (COWN} SELECT. HIV. MOIRE REDUCTION, ROTATION
Okey (UP), and [2)-key (ENTER) are located on che DISPLAY =PEQUENCY. RECALL
front panel ‘+ CONTRAST corrolied wih Vidwey
3.2
Signat
connectors
arg
AC
inlet
are
‘oca:ec
on
che
n
be
anecty
ie
ack
side
of
she
cabinet
pushing
'2hkey.
33. OSD menu include: 9g func
SONTRAST. BRIGHTNESS. Hi SI
POS TICN V PIN-CUSHION. “AAPEZOIC
CEGAUSS. PARALLE_OGRAM COLOR SELECT
USER COLO, VIDEC INPUT LEVEL. VIDEC /NPUT
ah sync sigral OSD menu apc
1 ey
vs by pushing

2. MECHANICAL SPECIFICATIONS
refer to tne attacnec crawing
2.1 Dimension Height : £78 mm (188°) 3p.
Wicth : $05 mm (19.9°) yp.
Depth : $10.mm (20.17) yp.
22
Net
Weight
28.0kg
(58.5
Ibs)
typ.
3. CONNECTORS
21 Signal connector 1SP Mini D-Sub X 1
BNC connector X15,
3.2 AC inlet CEE 22 typed connector
18P Mini D-SuD
Pin assignment
1... RED 6..GROUND 11... GROUND
2... GREEN 7..GROUND 12... - (OPEN)
3... BLUE @..GROUND 13... HSYNC.
4, GROUND = 9...-(OPEN) 14... VSYNC.
5. =(OPEN) —10..,GROUND 15... - (OPEN)
4, CAT SPECIFICATIONS
Part No. Mas tKy¥1a0x
Type 21" (19 67 viewable) agonal
Dot Prich 0.35 mm
Phospnor RG. 8 Shon Persistence =
ETE) TDARK TINT
Face ‘AGRAS COAT
Total Transmission 39.5%
5. ELECTRICAL SPECIFICATIONS
$.1 Standard conditions .. Except special items
(Green, fol WF characters with a border
Icing. (7 x 9 dots)
Video sigan! 100% duty
display area 380mm x 285mm
Viaeo signal level_[0.7Vpp
Cenwasr, Gughiness [Conurast Max, Baghiness _cenfer pont
‘Amoent Temperature 20 + 5*C (68 = 9°F)
Mputvoliage [AC 120v, 602
Fahey va|vencalfea comer
Tesral magne} onzoral tld ro
Viewing decton [Paraliel othe CAT ans
‘Aller an inital warming up ime el more
than 30 minutes
200250 1%
[ MODE? 1008 x 768 (ed onne TSR)
Display mage
Measurements
abe Tig
Dispiay moce:
5.2.1 Power supaly . Commercial power 5
Trout age
ul current
Tnrush cutentiai 20°C) | «0 Aon
Power consumotion TOW (Ty!
(71) Input current is reduced to about 60% of cur
current products oy “High Power Facto”
technology.
5.2.2 Power Management for Power Saving
Power saving system is designed bases uson
\VESA DPMS Standard (Version 1.0)
1) Power consumption and recovery time,
rr
=
TIER
ESOT
me
|
_[S
ae
e
er
See [sre oye] wae fio | See
Bafa
ON
|
NOR
|
NOR.
JacTvE)
ro
|
—
|
Green
wa
|
wal
|
090
stano-lirest|,
selaranc
|
«200
|
cas
|
veto
|S
‘ee
‘sus. Sco |
rane (8 Loum | cao | cas | oe
"The transition me trom ON state to each
‘APM states is $ seconds minimum,
“1: APM: Advanced Power Management
"2: Meas. Condition of power consumation for
ON state
DISPLAY IMAGE | WHITE full
with a Dorder ine (7X 9 dots).
"3: NORMAL : see °S 4 ACCEPTABLE TIMING’
"4: Power Consumption is measured at AS 100:
2a0v,
*5: Power saving operation is done at least less
than specifies value in the Ist
* characters
5.3 Standard timing
* Following total 8 modes are creset in the memicry
as standard timing at the factory.
= Refer to Fig. 2 as a defintion of tming and signal
level.
‘* This SPECIFICATION is specified at STD (1024 x
768) mode unless otherwise mentionec

TIMING
CHART
VIDEO
8 O.7/1.0V
A
I
Period
abi.
8
8 [Blanking e
C
[Syne
Wiath
2
Z
1D [Back Porch HIV SYNC
E
[Active
ae
F [Front Potch S
‘ —————“
Fig.2 A
FOR PRESET
MODE - 1 MODE - 2 MODE - 3
640 X 480 (60) 7024 X 768 (75) 7280 X 1024 (75)
DOT CLOCK 25.1748 _ MAE 138.0000_ MHz
V |C=SYNC WIDTH —
iD - BACK PORCH
79.9763 KHz
(1,688 dots )
FOR RESERVATION
RONT PORCH “| “0.318 ms (10 ines) | 0.017 ms_(_ “oorsms (1 Wes)
'SYNG POLARITYIHY) 8 Positive Postive Poxtive / Positive
iD- BACK PORCH —_ |
6.49 ys
2.032 ps
3.810 us
MODE - 4 MODE - 5 MODE - 6
G40 X 480 (75) ‘B00 X 600 (75) 7024 X 768 (70)
DOT CLOCK 31.5000 MHz 49,5000 _ MHz
[__ __375000_KHe | «468750, al
| 26.667 us 21.333 vs ( 1,056 gots |
A-PERIOD
B- BLANKING TIME
V C= SYNC WIDTH
D-BACK PORCH | —
‘© - ACTIVE TIME
F -FRONT PORCH |
E-ACTIVE TIME — | 20317 ws
F - FRONT PORCH 0.508 ps
tv
0.027 ms_(
gee nes):
Biines )
‘SYNC POLARITY(HA)
Negative / Negative
Positive / Positive
‘Negative | Negative

FOR RESERVATION
MODE - 7 MODE - 8
1152 X 870 75) 1280 X 1024 (60)
DOT CLOCK 700.0000 _ WHE 705.4695 WHE
fH —| 656813 Kez 37152 _ Kee
‘A> PERIOD. 14560 us _( 1.456 cots) | 1569 us (1.718 cots)
LANKING
TIME
|
3040s
(304
cots)
|
400%
us
(438
cots)
H iC- SYNC WIOTH 1.280 us (128 dots) | 1425 us (156 cots ) |
'D-
BACK
PORCH
4.200
us
(120
dois)
V (C+ SYNC WIDTH
© - ACTIVE TIME 41.520 ps_( 1,182 dots )| 11.693 us_( 1,280 cots )
F=FRONTPORCH | Os60us (56 cots) | 0402 us (44 cots)
ES, pean. 750616 He | 599062 Hz
A-PERIOD yasms (_ 9
B= BLANKING TIME | 0655 ms
K PORCH 0568 ms_( s)| 0502 ms (3%
ACTIVE TIME | 12667 ms (_| 36.071 ms ( 1,024 tines }
|F - FRONT PORCH 0.044 ms_( 0.047 ms ( 3ilines )
SYNC POLARITY(HN) ‘Negative / Negative ‘Sypc'on Green
FOR ADJUSTMENT
1
DOT CLOCK
fH
jA-PERIOD
B - BLANKING TIME,
H 'C-SYNC WIDTH _|
0: BACK PORCH
E- ACTIVE TIME
A 29 5039__ KHz _ |
TB
204
us_
(788
oats)
O18 us (136 cots)
4.115 us_C 93 dots)
1.263 ys (29 dots)
27876 us_(__ 630 dots)
D-BACKPORCH __
€ - ACTIVE TIME.
it 80 is (724 gots)
Tories (21 ines)
19006 me (587 ines)
F-FRONTPORCH | 0619 ys (14 dots) 0.442 us (38 dots)
"480520 He
20811ms (_ 614 kines)
[B= BLANKING TIME | 0915 ms (27 jnes)
ViC=SYNCWIDTH _|_0102ms (3 lines) ines)
0386 ms (28 ines )
9.036 ms_(_583 lines )
B - BLANKING TIME
H 'C-SYNC WIDTH __
1D - BACK PORCH
{E - ACTIVE TIME
F - FRONT PORCH
2904 us (382 dots)
1.096 us (148 ots }
fv
‘A=PERIOD
B- BLANKING TIME
V 'C-SYNC WIDTH
D-BACK PORCH _
E- ACTIVE TIME
F - FRONT PORCH
1528 us (_
8216 8 ( xs
0262 ys (36 cats)
_ «tes 0122 He
76.060 ms {500 ines )
0.497 ms ( _&t nes)
0036 ms (Sines)
0376 ms ( 35 ines)
S563 ms (459 ines)
08s ms (__7 ines)
‘SYNC POLARITYIHIV)
Negative F Negative
F-FRONT PORCH | 0.102ms (3 ines) 0077 ms (Sines)
‘SYNC POLARITY(HA) Negative / Negative ate / Negative
FOR ADJUSTMENT 5
[BOT CLOCK 7345800
fH ‘82.5061 KHz
A- PERIOD 12120 ps_( 1,636 dots )

5.4
Acceptabie
timing
5.4.1
IF
your
tming
is
wethin
foslowing
specificanon,
mnis
CRT
qisplay
can
automatically
function
with
2
cerain
size
ang
position.
orzontal:
Syne
frequency:
30.0
~
820
kHz
Blanking
Time:
2
30
uS
Back
Porch:
2
1.25
uS
Front
Porch:
$
Back
Porch
Sync
Width:
2
1.2uS
Vertical:
Syne
treauency:
$0.0
~
1600
Hz
Blanking
Time:
2
0.5
mS
Back
Porch:
20.5
mS,
Syne
Width:
2
0.045
mS
5.4.2
+
Several
items
like
size.
position
and
distortion
can
be
adjusted
througn
OSD
menu,
and
it
you
want
to
keep
it,
please
push
the
key
[IJ
for
memory.or
keep
the
key
untouched
for
about
20
seconds,
its
automatcally
memorized,
NOTE:
19
case
of
RECALL,
the
keys
1s
un-
touched
for
about
30
seconds,
RECALL
function
willbe
canceled,
Please notice, however, that there is the case you
can mot get the size andlor position you want,
{lor example Display Time is too short, then you
Can't get digger size of the image.)
5.43 The CRT adopted in this CRT display is designeo
to minimize the moire phenomenon at suitable
size for typical display modes. However, there
might be a display format among many formats. in
which the moire phenomenon appears on this
display
55 Signal level and input impedance
5.5.1 Video signal level
+» This CRT display is adjusted at the factory using
0 7Vp-p video signa’, Black level is OV
‘This CRT display is compatible with 1.0Va-p
video signal by using video input level secton
in. OSD function
5.82 Sync signal level
+ HIV Separate, HV Mixed TTL level
«Syne on Green 0.286 Vop
55.3 Input mpedance
Video input: 750
Sync input 2 1
5.6 Display performance
5.6.1 Dsclay area
ET TIMING.
WIDTH 380mm + 5mm.
HEIGHT : 285mm + Smm.
MODES
WIDTH: 355mm + $mm
HEIGHT : 284mm + Smm_
2) RESERVATION TIMING
MODE4~7
WIDTH: 380mm + 7mm.
HEIGHT : 285mm + 7mm
MODES:
WIDTH: 365mm + 7mm.
HEIGHT : 24mm + 7mm
3) DISPLAY AREA (Full scan)
WIDTH; 402mm
HEIGHT : 301mm.
5.62 Centering
1)
PRESET
TIMING
(MODE
1-3)
1A-B1s
4mm
'C-Dis4mm
2)
RESERVATION
TIMING
(MODE
4-8)
1A-BIS7
mm
IC-Dis
7mm
¢
Edge of bezei
5.6.3 Distortion
$63. a) Trapezoid
1AC-SDI < 2.5mm
1A8 - COI $ 2.5mm,
A 8
c .
) Paralielogram
aosaem

3 ¢ Pincustion anc barrel
Iou,ical s25mm
ath Ida $20
Sees
ao
2
eaten
5.6.4 Rotation
IH1-Hal s2.5mm,
5.65 Lineanty
Honzontal linearity
Xmax. = X min
= RRR,
xX max. + X min, scloowse%
Vertical inearity
Y max, ~ Y min.
= TREE TY mn * 100% $ 6%
|
Ms
neve
x
Conditions
Display
image
-
crossnaten
pattern
Maxmum
anc
minimum
values
shoule
net
be
adjacert
to
each
other
Xmax.
igmaximum
value
among
X1~-Xm
Xm.
igminmyum
value
among
X1~Xr
Y
max.
is
maximum
value
among
Y1~Yn
Ymin,
isminimum
value
among
Y1-¥n
5.7 General performance
5.7.1 Video output
[Bancwictn | _135MHz (Typ)
5.7.2 Maximum luminance
T20
cam
(min
Vor
5%
whe
fied
at
the
center of tne display area
100cd/m* (min } for 100% white field at
the center of the display area.
Specified by 9300K + 27MPCO
Conditions
|
Luminance:
Max.
(Contrast:
Max.)
(Brightness : Center)
58.7.3 Minimum luminance
= 17 com at the center of ne cisslay
value | area
Specified
by
9300K
+
27MPCD.
Display image : White full fat field
Coravors
tummance
Mn.
(Canrast
Mn)
(Brightness | Center)

57.4 Brignmess variation
Value]
70%
(Min)
Variation
=
CIA
X
100
Display
image
:
White
full
fat
fel
Luminance
=
MAX
(Contrast
:
MAX)
(Brightness :
Cecter)
‘A:
Luminance
at
center
position
C:
Luminance
at
center
posttion
of
lowest
onghtress
Conditions
57.5
Display
area
regulation
Display area varaben [Range arose]
Due
to
within
1.0%
of
display
|
17-100
ca/m*
Luminance _ [area (white flat field)
Bue
to
|
with
1.0%
of
asplay
[AC
00
132V
Power
Supply
area
or
180-264V
Due
to
within
1.5%
of
display
[0
-
40°C
Temperature
|
area
$.7.6 Color Point
< Conditions >
Display image : White flat field at the center of
the cisplay area.
Luminance Brightness Center
‘9300K + 27 MPCD
Value x= 0.281 £0.020
y=0.311 +0,020
5.77 Msconvergence
Certer area of cisplay
Comer area of cispay
{A} 0.30 mm (Max }
(3): 0.40 mm (Max)
x ®
<Condivons>
Display image Crosshatch pattern mec
with R. G and 8 colors
‘Convergence gauge» KLEIN CM7AG
Display image WH 980 x 285mm
5.7.8 Punty
Conspicuous mis-ianding snall not be visible
‘within the cisplay area at a distance of 60cm fram
CAT surface.
Condvons:
Disolay image : White fiat feld
Lumeance —: Contrast max, Brightness
Center
$7.9 iver
lnvistve at a asiance of 60 em fiom CAT surtace
Conditions:
Display image . White tiat field
Luminance Contrast max, Brightness
Center point
6. ENVIRONMENTS:
6.1 Ambient temperature, humidity and altitude
Operating Storage and
shipment
Temperature OF-40°C. =20°= 60°C
(32°~104°F) (-42=140°F)
Humidity 550% 35-30%"
Antuse 3000m (Max) 12.000m (Max.)
1 40.000 ty (40,000 ft)
=Non-congensarion

62 Vibraton and shock
(1) Wibraton
(2) Snock (Drop test)
Tore recisn
ai
o
sees
tess worstor oseraton sine i
T Tee =:
1 [verea | 22 / m8
unoacted | 2 | | ws |
Horizontal
3
T
Tome
1
+
|
vereeat
mr
psieis | (0G) Logswees. le
Front to !
Paes
|
2
et
|
sm
=
SSOMZ
«BOS
|
Honzonta SS ave 2ome
le lok |
[Uneacked
20
G
One
tre
for
each
lace
(6
faces)
(non
operation)
TNumoer of
Time
7. REGULATORY STANDARDS
71 Safety standards, Applicable standards
UL 1950, Listing
CAS 22.2 No, 950, Products Certtication
Tuy (IEC-950GS (2H1)
CHHS, 21 CFR suochapter J. X-Ray Aadia:o>
PTB X-Ray Radiation. Approval
Hw
7.2 EMC standards
Designed to meet following standards
VOC class I!
FCC:
FCC
part
15,
subpart
8,
class-B
VOE 0878/06 83
Vig 2agir99¢
CiSPR22 cass 8
MPR. Radiation
80 Power Cord
UL
and
CSA
approved
AC
cower
co°¢
's
pu!
package Leng:n . 20 meter af y:
courtty {lor example Germany). please use 3 cz
cord azcroved by savety agency of eact
(VDE in Germany)
use in
Order of] Face to arop is to ace
drop
_|
the
floor.
(see
the
figure)
[9
Packee
7 20.6009 Tem
i [oem
for eacn
bom)
cietons
9.0 Signal Capie
Signal cable with Mini O-Sub 18P cennecto’s at
Dott end 's ou m package
Length : 15 meter
10.0 Reliability
> 55.000 hrs (Demonstrateg MTBF}
<EMI test pattern>
Wonite, full “H” characiers (9 x 14 dots}, bck
24 dots} "+" character font is as follows

8,
COLOR
CRT
DEFECTIVE
STANDARD
1
Specitication
of
screen
blemishes
Trig
instruction
is
applied
to
inspector
of
t
screen
faults
ang
of
the
glass
quality
of
r
facepie’s
a2
Test
procedure
321
Tests
are
to
be
Cone
under
the
followng
#0
cond
2075:
a) With the white raster of 34 edi! (10 lux} oF
monochrome
taster
(component
moncch'o-
matic
raster
for
causing
the
wnite
raste:
to
appear)
in
the
center
of
9,300K
+
27
MPCD
image
observed
at
amDent
light
intensity
of
about
10
lux
during
operation.
9) A flaw is observed under the light of about 200
lux
when
the
set
is
nat
in
operation
822 Viewng distance snould De 60 cm (23.62")
minimum. Faults not visible at this viewing
distance are permitted
8.3
Permissible
limit
6.3.1
Screen
faults
(1)
Maing
phosphor
dots
8.2.3 The Following aualzy areas are specitied
Zore A Arectarquiar a'ea (sides X and ¥}
Of whicm the point of mtersection
Of ne diagorais corcices w
mecrerica’ center of tre sereer
A
82.4 Remarks concerning ‘aus
a) Uniess otherwise spec‘ied, the se of a ‘ault
‘5 the smallest vaiue found with one of the two
formulas.
a+b a
SO ot Fe + 2b fa lengtn, 9 = wich)
bj Tre cot sgnal end clogging area cefined as
rot being a chipping in excess of 1/2
Minmam Dstance
8.3.2 Glass faceplate detects
‘Av bubbles, scot, stains and elongated air bubbles
mm) |
Tine
w
[aciacent
dots
isame
colon)
20
2adjacent
dots
(each
color)
20
Tao: Green chospnor oot
Yellow phosphor dot 20
Fed phospnor dot
Deformation,
blemishes
‘Average
cameter
cH
and other faults (mm)
‘Average Dramete’ (mam) No. of Alowabe aul Winimum Distance mm)
Zone A Ase
are.
70
o
051-075 [0 o 20
026-050 | S|
11-025 = = = _| Notmare tan 5 dots musinat
i exist win a dameter of 10m7
Statches {Glass and Coating)
Width Zones 8 oouct__ Winmur Mutual Distance betwesr Paws
Mare than 0.16 mim Must not exist =
O11 -0.15 mm 13mm long O° 18s Same
3080.10 mm 2emmoress | Taam
LessthanGosmm Nolmiwlengn | onm
{2} Other detects not stated azove such as cn.
allowed wnen trey subsiantally Spoil appearan:
ened from me wiewng asta
eS. Shear “aks, souds ana colisned patterns &

Zone C: Tne area outside the fluorescent suriace:
(2) Observing cistance: eng.
£20), Lan (ta night we
{1} Seratcnes
<a
< 0.05 Permitted
0.06-0.10 | 26.0
0.14-015 13.0
2016 Rejected
* A scratch in excess of 0.16 mm in wndth is taken as a blemish if ts contrast is extremely low, The stancard given in
(2) applies in this case.
(2) Opaque Flaws Such as Stain anc Coating Peel-otf
Flaws are classified according to the contrast, and judgment is formed based on tne size for each contrast,
Tne contract classification is defines as below.
+ High contrast
Foreign matiers such as graphite and det which obstruct the light from the fluorescent surface. and coating o8e!-
ott.
‘+ Megium contrast
‘Sem-transparent foreign matters ana biemisnes.
* Low contrast:
The light from the fluorescent surface litle difers, but slight blemish and other flaws which cannot be visually
ident‘ied
Average Diameiet by Convasiimm) | __No ol Teerabe Guantiy by Zane] Tolerable Distarce
High Contrast [Medum Contrast] Low Contras: | Zone A ZoneB | (nm
BeowO10 | SelowO20 | Beiow050 | (udgment snoilermedon ine basso! | Gemisnes must
‘Quantity, but dots shal be less tran five | not be concenvae|
within a circle of 10 mm in dameter. eo
077-025 | 021-050 | 051-250 2 4 20
026-050 051-100 | 1.26-250 7 2 i 40
O51-075 , 101-180 251-375 | a H 1 80

—_—_—_—_————— DIMENSIONS
505
io °
93
4el 3
14 é
me
sa
io } x
=
io v Fe
272

DISASSEMBLY INSTRUCTIONS
4.
Rear
cover
removal
Note:
Spread
a
mat
underneath
to
avoid
damaging
ine
CRT
surface.
Remove for large screws © ana :wo smal screws
@ from tne rear cover
2), Remove the cover
3) Remove 14 sc-ews @ from the shisle case
4)
Remove
the
shield
case
2, Video PCB removal
1) Remove four screws D securing ine shield cover.
2} Remove the sneld cover (A).
(A)

3) Loosen the screw © securing tne CAT neck and
the shield case.
4) Flemove tne PCB block from the CAT
5} Remove the N10B connecior ©
6} Remove the N382B connector D
7} Remove two focus leads © atter pulling uo the
focus lead securing lever.
8)
Remove
two
ground
connectors
©
(N105
and
N16)
connected
to
the
PCS.
9} Remove three flexible PC8s B
10} Remove the PCB from the shiele case.

3.
Main
PCB
Removal
+)
Remove
the
pedesta!
TT.
2)
Remove
tne
connector
i
(N802}
of
the
c:
})
Remove
the
connector
&
(N101)
of
the
tit
coil.
4] Remove the DY connector 18.
} Remove the anode cap
3) Remove two ground comectors
auSs
Remove
six
screws
1
securing
the
Dortom
fitung
metal
8) Remove the fitting metal anc the PCB trom ine
cabret
9}
Remove
three
screws
1
securing
tne
fitting
etal
10} Remove the signa! connector PCB BB.
11}
Remove
two
screws
@
securing
the
AC
inlet
connector
12}
Aemove
four
screws
®
securing
the
fitting
metal
ard
PCB
43)
Remove
one
screw
2)
securing
the
fitting
metal
and
heat
sink
14) Remove the SUB-PCB
18) Remove the holder 2% trom the fitting meta! and
PCB with the figure

CONTROL LOCATION
Basic operation of parts
Convo! cane! em @D oOo to}
E + 4 u
Names of control c za)
Tixey | ‘Sownkey! Upkey || Zeey | /P Power sites
=
Functions
[tite display sowast=enu: i) | gis whan pave suten eres |
ER beh |] jgaes ourwen ts pressed agar
{To adusiteveict setciedvem._| || OSes Ooty fe Powe
To display mar menu Gutmenu, Store
change data in the me~ory
Selecied or swicn change] © [Toswicnor ard
cata off the dispay unt
For a detailed cescription of tre functions of the
next secvor onward.
key, down key. uo key, and 2] key. refer to the
Examples of on-screen operation
A. Contrast adjustment
Ossolay cnanges Steps of overaton On-screen display changes
< Contrast menu >
| 7, Display the contrast adjustment menu srg) Gondest res
Contras
the Lkeyor T key,
a=)
2 Satine cesved stale usng hes teyort
key. ‘tthe [IKEXIT) xey is pressed 0° no!
1 keys pressed for about 20 seconds the set
| data is stores in the memory and the menu
screens cleared
8. H. size adjustment
Disolay cnanges Steps of eperation Ons
Crees c splay changes,
< Man meny >
i
|]
Calta
ran
menu
on
he
screen
By
]
pressing
tne
[ilkey
SS
|_J2 Movers cusooH Sze usngmeTkeyor
|_ They. then press ihe !2Ikey to select
[ee
[5 Set the desired state usrg re Dvey oT
|
key.
If
the
EKEXI7)
«ey
1s
pressed
o
no)
1 key ss pressed for about 20 seconds. :ne set| eee)
data is stored re memory and
screen 1s cleared i
<Page 1> <Page 2>
[Seownasr 7 [Simeon =
os E panae.oora
Bi oamon rorarow
Bn
ite
Colom
secect
a sce | Coie
By
Prcuseon
|
roe
coven
N oecauss H Ine Seuser
FRE n |__ peu +
Coat Facade mo z4

CAUTION FOR ADJUSTMENT AND REPAIR
1. Degaussing is inevitably required at purity
acjustment of convergence adjustment.
2. If you check or adjust electrical specification o
function, more than 20 minutes Durn-in is required
Retorming of the lead wire is required after your
‘repair work
4, Prior t0 starting work, be sure to check that tne
input signal is at the specified timing and that the
polarity is as specified in all modes.
5. Brightness control: brightness tends to decrease
about 5 cdim! at tne white window ang about 1
cmim2 in the white raster after mounting the rear
Cover in position. This should be taken into
‘consideration.
When servicing or replacing the CAT. high voltage
sometimes remains on the anode. So. completely
discharge high voltage before servicing or replacing the
CRT so as to prevent a shock to the serviceperson.
CRT Anode Discharge
1. When you check the CRT anode or replace the
CRT, discharge the CRT anode to tne external
conductive coating (aquadag) of CRT, especi
when checked right after power turn-off
2 Ground one end of a jumper wire which has a
resistor (3OKV < resisting pressure 100MQ) ana
connect tne other point to the CRT anode
Note: Grounding must be done first.
CAUTION FOR SERVICING
6
Brightness
stabilizing
ume:
it
takes
about
20
:9
50
seconds
for
the
Dngntness
to
stabilize
after
turning
the
power
off for
§
seconds
(AC).
Theretore.
care
should
be
taken
to
ths,
7.
Aging
should
be
mage
in
wnite
raster
of
30
~
50
edim2
and
raster
size,
402
x
301
mm
betore
adjusting
tne
ITC.
8. Set the CONTRAST to MAX and BRIGHTNESS to
CENTER using the 0.S.0.
This model has a section that does not share a common
ground
with
the
power
supply
section.
The
different
sections are referred to as the HOT sec:
COLD section in the precautions below.
1. Do not touch the HOT section and the COLD
section at the same time. You may be hit by an
elecnic shock
2. Do not short the HOT section to the COLO section
This could blow the fuse or damage parts
3. Never measure the HOT section anc the COLO
section at the same time when using tools such 93
‘osciloscopes or mutmeters
4 Always unplug the unit before beginning any
‘operation such as removing the chassis.

ADJUSTMENT AND CHECK PROCEDURE
INTRODUCTION
«Ths monitor is contolled oy micreeomauter. Wen
the excenton of a part of pumyiconvergencerfocus,
allis digitally adustea
Therefore, the computer/dedicates control
sottwarelintertace/9~12V cower suppiy/signal
generator are requres tor servieng,
TOOL REQUIRED
+ Computer
‘Control software 1s compasiole with IBM PC,
‘Therefore, it is suggested to use a computer whicn
has compatibility with |BM PC.
+ Control Software
The control software uses a 3.5” floppy disk.
Therefore, the 21PS chassis can only use “2182PS
adjustment
program
disk”
and
no
other
disk
can
be
used on this chassis.
interface
Jest as in ine case of tne contro! software, tnis
nter‘ace is not commercialy availaole on the
market. You afe requested to obtain ns interace
by writing or cabling airectly to our Monitor
Production Sales Diw'sion,
Power Supply
ADC 9-12V (+9-12Vi-9~12¥) power supply is
requred for operating the interface
Signal Generator
It is necessary for you to use a signal generator
which operates on th 82 KHz, fv 160 Hp, and fc 135
MH, bands.
INTERFACE CONNECTION
ONTO 8)
(Seno
pas
-v
ov
+
8V
los
—
BATTERY
CONNECTION
9°
3u8
5)
Shara
& hart
[a cseaa ro se%0]
PartsNo_| No. green label
crt M5223
ort WAI62
ort warez |