Panasonic TX-1441AE User manual

)
Service Manual
Color Computer Monitor
MODEL TX-1441AE
Chassis No. X54
CONTENTS
SAFETY
PRECAUTIONS.
sscsesssscuissusssosssocsssnctarsevasicregetsocaiescubscesestoseseiseeslasadanandauevesescdedsuructvasyigestecdeeteadvagedaanlavbvaveveds
1
SPECIFICATIONS:
scscstece
etek.
Soi
50th
saute
conesnsbatssundzasvabvedszeevibusnieoosssesesnseselievebuadscl
satseasdieséadheeaetba'ccl
annie
iaiGnientucuwiehes
2
DIMENSIONS:
s-3
scien
ss
fccdeeaesstanictadbastabnets
odevsocssarJouannivscsascaagts
usucziacandoseekasteaartesved
tuelaagated
vsaeustiaat
eterna
<date
tea
tavanaalec
15
COMPONENT:
LOCATION:
avccusdisscisiusscstesseadusseztschiwsyapsutacetccdtulesncebesadbedeylavacaiciiatesacdediasuudes
unletesaasadvaseadgadavetedababedeus
17
CONTROL
LOCATION:
5
2.ccesssscousdeos
dust
ciel
sssuveoia
sigs
shetvestodeatsavectussastetabastatncslasgseiie
sagaastaantevasteel
eeeedscdeataze
a
eaneeieaae
18
DISASSEMBLY
INSTRUCTIONS.
uu...
cssssesesesssesssesecsstevsessesssesceesssssessesesesesevssssessvsssuscssersesssacacsesavacaecaeeasarersuneers
19
CAUTION
FOR
ADJUSTMENT
REPAIR
....ccsescscesscssscersesssesessscscsescseseassnsesesesescssarscsuscacsvacsvsvssesavaseesevacsasnasavavanaeas
23
CAUTION
FOR
SERVICING
©
«.cisicessessavssaciazeacacoacca
tides
Giudissascisssavssasiegssccetahssdvasiescusssbedavs
ads
dhanrtesuovdedinsedevalals
his
svaes
23
ADJUSTMENT
PROCEDURE
scsi
ccscisscotsseetodesssaseoususnasaieuscnnastdestonadusia
syepesut¥bdegstedesegeacaasevabivonstssasebesscotersedavebsnjentaddvs
24
CIRCUIT BOARD-SOLDER VIEW ooo ssscssssscsessssseseesssessesucsssesesesesessseseasscsessssecsuseseatesssscscecasacecessenevaesaseasavecacaays 44
BE OCK DIAGRAM hductcie ca videiarsbasaccstis3dicgeeasasdueaeh obsceesaundlenchsduueden ibaa ssunaeansniehaensorauiaaeeevéus deste de obeadaacekdeteasauteintalenstasies 46
SCHEMATIC DIAGRAM iss cescssstassectiicssteocshcteivns Savclie Fegsdeslibaasd andere’ schieane dle cctanessaseacustedtvavuesbor sve sacdlansceovelaesebbastedbevss 47
CONNECTIONS vvssiscicocedisies site atuatareaiac 2s sahceseaus abtbasnsveduadavsedesuseiesaastesgnsusbsdiadoraeaseedeupvock otbata sdida chants Gosden Waders dusters 51
TROUBLE SHOOTING HINTS. csscaivaccavascescssszscuasesectssidiva cud canes bee dageszeacanecta sta sedvbetas | vedasveteuseuvecavudsslegetatsasdepbocliadnedies 52
EXPLODED VILE W. iiss stsccshScitaseccseticcnts Saas dtattviretva del attiastertsceviteceeeseribauss peeucures anti setteashat aon aoe Moa Wasa sdede dg 59
REPLACEMENT PARTS. EIST : sisceecscieveis csadetvecieaten ccagnchseliasasstbenesiseys Sede is gueseseal ssavianigtesesssinctusheducvs lvaedaausodedeourddecepales 60
Matsushita Electric Industrial Co., Ltd.
Pp
anasonic
Central
P.O.
Box
288,
Osaka
530-91,
Japan

TX-1441AE
1 CAUTION
No modification of any circuit should be attempted.
Service work should only be performed after you are
thoroughly familiar with all of the following safety checks
and servicing guide lines.
2 SAFETY CHECK
Care should be taken while servicing this CRT display
because of the high voltage used in the deflection circuits.
These voitages are exposed in such area as the associated
flyback and yoke circuits.
3 FIRE & SHOCK HAZARD
3-1 Insert an isolation transformer between the CRT
display and AC power line before servicing the chassis.
3-2 In servicing pay attention to original lead dress
especially in the high voltage circuit. If a short circuit
is found, replace all parts which have been overheated
as a result of the short circuit.
3-3 All the protective devices must be reinstalled per
original design.
3-4 Soldering 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 Jumper between
the two prongs on the plug.
4-2 Turn the CRT display power switch '’on"
4-3 Measure the resistance value with an ohmmeter be-
tween the jumpered AC plug and each exposed
metallic part on the CRT display such as the metal
frame screwheads, control shafts, etc. When the
exposed metallic part has a return path to the chassis,
the reading should be 1.8 megaohm minimum
5 LEAKAGE CURRENT HOT CHECK
5-1 Plug the AC cord directly into the AC outlet. Do not
use an isolation transformer during this check.
5-2 Connect a 1500 ohm, 10 watt resistor, paralleled by
a 0.15uF capacitor between each exposed metallic
part and a good earth ground (as shown in Figure 1).
5-3 Use an AC voltmeter with 1000 ohm/volt or more
sensitivity and measure the AC voltage across the
combination 1500 ohm resistor and 0.15uF capacitor.
5-4 Move the resistor connection to each exposed metal-
lic part and measure the voltage.
5-5 Reverse the polarity of the AC plug in the AC outlet
and repeat the above measurement.
5-6 Voltage measured must not exceed 7.5 volt RMS,
from any exposed metallic part to ground. A leakage
current tester may be used in the above hot check, in
which case any current measured must not exceed 5.0
milliamp. in the case of a meaurement exceeding the
5.0 milliamp value a rework is required to eliminate
the chance of a shock hazard.
SAFETY PRECAUTIONS
Note: High voltage is present when this CRT display is
operating. Always discharge the anode of the
picture tube to the display chassis to prevent
shock hazard.
AC VOLTMETER
(EARTH
GROUND)
To
INSTRUMENT'S
EXPOSED
METAL PARTS 16002, 10W
Figure 1
6 IMPLOSION PROTECTION
Ail Panasonic picture tubes are equipped with an integral
implosion protection system, but care should be taken to
avoid damage and scratching during installation. Use only
Panasonic replacement picture tubes.
7 X-RADIATION
WARNING: The only potential source of X-Radiation is
the picture tube. However when the high
voltage circuitry is operating properly there
is No possibility of X-Radiation problem.
The basic precaution which must be exer-
cised is to keep the high voltage at the
following factory-recommended level,
It is important to use an accurate periodically
calibrated high voltage meter.
7-1 To measure the high voltage, use a high impedance
high voltage meter, connect (—) to chassis and (+) to
the CRT anode button.
7-2 Turn the Brightness control fully counterclockwise.
7-3 Measure the high Voltage. The high voltage meter
should indicate at the following factory-recommended
level.
7-4 |If the upper meter indication exceeds the maximum
level, immediate service is required to prevent the
possibility of premature component failure.
7-5 To prevent X-Radiation possibility, it is essential to
use the specified picture tube.
7-6 The nominal high voltage is 25KV and must not ex-
ceed 27.5K at zero beam current at rated voltage.
Note:
US OES JIMPORTANT SAFETY NOTICE Eins
3 There are special components used in Panasonic CRT &
: displays which are important for safety. These parts are E
3 identified by the international symbol A on the sche- :
é
matic
diagram
and
on
the
replacement
parts
list.
It
is
:
Hessential that these critical parts should be replaced i
é with manufacture’s specified parts to prevent X-&
FH RADIATION, shock, fire or other hazards. Do not
: modify the original design without written permission &
E of the Panasonic Industrial Company or this will void :
: the original parts and labor guarantee.

1. SCOPE
The purpose of this specification is to describe the
frame type color display monitor which is able to
function for MULTI modes.
1.1 FEATURES
(1) This monitor all frequencies between 15.5
kHz and 36 kHz.
(2) It is compatible with the IBM PC, PC/XT,
PC/AT, PS2 and look-alikes.
(3) It is compatible the IBM Color Graphics Ad-
apter, the IBM Enhanced Graphics Adapter,
the IBM Professional Graphics Controller
and other IBM compatible graphics adapter.
(4) The swivel base allows adjustment of the
vertical angle and horizontal direction of the
monitor to the most suitable position.
(5) It offers both TTL and ANALOG signal in-
puts, and in the ANALOG mode can display
an unlimited palette of colors depending on
the graphics board and software being used.
1.2 PANASYNC SPECIAL FEATURES
(1) PANASONIC World-famous technology, SST
DY improves greatly, misconvergence and
distortion.
(2) 2-WAY 16 Colors
2 kinds of 16 colors available, Yellow color-
ed 16-colors, and Brown colored 16-colors.
2. MECHANICAL DESCRIPTION
2.1 Dimensions
Height : 279 mm (11.0) typ.
Width : 330 mm (13.0’) typ.
Depth : 408 mm (16.1"") typ.
Net weight : 12.2 kg typ.
(Monitor only)
. CONSTRUCTION
3.1 Outline
CONTRAST BRIGHTNESS
cd
COLOR SELECT
TEXT COLOR
TEXT SW
AUTO/MANUAL
ANALOG/TTL
CONTROL
BLOCK
VIDEO
AC
90 - 144V.
180 - 264V
50/60 Hz
POWER SELECT
SPECIFICATIONS
TX-1441AE
3.1.1 Auto/Manual switch
This switch selects either the IBM mode
when AUTO or the manual mode when
MANUAL.
When this switch is AUTO, MONITOR
automatically works in the |1BM mode and
adjusts itself to the scanning frequency,
resolution and color requirements of the
IBM compatible graphics adapter CGA/
EGA/PGC being used.
When this switch is MANUAL, the user
must manually select the number of colors
(8/16/64) needed by the graphics adapter
being used with the COLOR SWITCH (see
3.1.3 below).
Refer to instructions accompanying the
graphics adapter being used for informa-
tion on how many colors the adapter can
display.
3.1.2 Color switch
The three color configurations (8/16/64)
necessary when using non-IBM compatible
graphics adapters can be set using No. 1
and 2 of the dip switches as shown below.
Refer to instructions accompanying the
graphics adapter being used for informa-
tion on how many colors the adapter can
display.
DIP SWITCH
Color Mode (SW1303)
.2
8 Colors OFF OFF
16 Colors (Yellow) ON OFF
16 Colors (Brown) OFF ON
on | “on
Note :
These switches should be set correctly in relation
to the input signal of the graphics adapter being
used. Refer to instructions accompanying the
graphics adapter for information on the input
signal and refer to No. 3.1.4 below.
3.1.3 TTL/ANALOG switch
Used to select an input video signal-either
TTL or ANALOG - of the graphics adapter.
It is important to determine whether the
input signal of the graphics adapter being
used is ANALOG or TTL prior to connect-
ing the adapter with your personal com-
puter. Refer to instructions accompanying
the graphics adapter for information on the
input signal.

TX-1441AE
3.1.4 Text switch 4.2 Input signals
This switch controls the text mode of
MONITOR. TTL level positive
When it is ON, the text of the display will Analog 0.6V p-p/75Q positive
appear in one color selected by the TEXT Separate sync. TTL level
COLOR SWITCH (No. 3, 4 and 5 of the Horizontal sync. Positive/Negative
dip switch on the REAR of MONITOR), Vertical sync. Positive/Negative
regardless
of
the
colors
of
the
software
pro-
Composite
sync.
TTL
level
gram
being
used.
Positive/Negative
When it is OFF, the color of the software : :
Composite sync. On green video
program being used will again be displayed. Sync. 0.3V p-p Negative
The diagram below of the dip switches (Video 0.6V seep TIVE)
shows how to display text in your choice
of
seven
colors.
4.3
Synchronization
Forizorital
\sicececaceiiaii
15.5
to
36
kHz
DIP
SWITCH
(SW1303)
Vertical
tiiescateviannied
50
to
100
Hz
4.4 Signal timing
See page 9.
4.5 Video out
Amplifier response
The video amplifier shall produce a drive signal at
the cathodes of the CRT of sufficient amplitude
to produce a spot luminance of maximum lumi-
nance (RA, GA, BA, RB, GB, BB = H), with rise
and fall times of less than 30 nsec from. 10% to
90% pulse level.
TEXT COLOR 3 4
B
ON
Fwarre | on | ON | ON |
NOTE :
The text switch k ly in the TT
eee aE MANOR my Whe enh 5. OPTICAL CHARACTERISTICS
5.1 Image test condition
3.2 CRT characteristis eral asieh : a H” character
Size : 33 cm (14 inch) diagonal Color ; reen 2/3 level
Matrix : Black opaque material Brightness 's 4
Matec tyne’ Regative-euare band controls : Max. (without background)
Contrast control: Max.
View direction: Parallel to the CRT axis
Ambient
Temperature : Room temperature
Faceplate type: Contrast enhancement,
Direct Etched
CRT type No. M34JDJ80X
Phosphor : P22
Pareieeaneed Short Supply Moltaue > AC 230V, 50 Hz
Array : Dot trios Tertestria! ; :
Tio pies 0.31 mm typ. at center magnetism : Horizontal field ...... O Gauss
Vertical field .......... 0.4 Gauss
Mode : M2 signal
4. ELECTRIC PERFORMANCE Vi Position
4.1 Power Supply control : VR431 ...... Set to center of
Input voltage: AC 90 - 144V/180 - 264V screen using VR431.
Input frequency : 48 ~ 62 Hz Note: All measurements shall be made under
Input current: 0.8A max. (at 230V AC) normal conditions after an intial warm-
Power : QOW max.
up time of more than 20 minutes.
Note: Normal conditions are these which satis-
fy image test condition.
(Condition of each following item is nor-
mal condition unless otherwise stated).
norma! condition unless otherwise state

5.2 Image
5.2.1 Image size
Horizontal:
Vertical:
250 +5 mm (9.84 +0.2”)
187.5 5mm (7.38 £0.2’)
Testing condition is normal condition.
5.2.2 Image position
Image is within the area in figure 1.
IA—Bi S 4mm (0.157)
Testing condition is normal condition.
5.2.3 Distortion
(A) Pincushion
See figure 2.
Upper (a) .... Less than 2 mm (0.079")
Lower (b) ... Less than 2 mm (0.079"’)
Right (c1 or c2) and Left (d1 or d2)
seine Less than 2 mm (0.079)
Input signal is a crosshatch pattern.
Other conditions are as stated in 5.1
Image test condition.
Rectangularness & Parallelogram distor-
tion Edge of the image is within the
area indicated by the dotted line in
figure 3.
Ee Ree een 4.5 mm (0.177")
Biccdiostesisatsts 3 mm (0.118")
Input signal is a crosshatch pattern.
Other conditions are as stated in 5.1
Image test condition.
TX-1441AE
CRT phosphor
Edge line of the image
IA
—
BI
S
4mm
(0.157”)
Figure 1
a,b S& 2mm (0.079")
c1,c2
: < Liza
d1,d2= 2 mm (0.079'’)
Figure 2
Edge line of the image
Fee 4.5mm (0.177")
Dievasee St 3mm (0.118"")
Figure 3

TX-1441AE
(C) Linearity
Horizontal and vertical linearity shall
be less than 7%.
See figure 4.
Input signal is a crosshatch pattern.
Other conditions are as stated in 6.1
Image test condition.
Figure 4
X (MAX) — X (MIN)
HORIZONTAL LINEARITY =
x 100 (X) < 7%
X (MAX) + X (MIN)
Y (MAX) — Y (MIN)
VERTICAL LINEARITY =
x 100(X) = 7%
Y (MAX) + Y (MIN)
Maximum and minimum value should not be adjacent to each other
Maximum distance between vertical lines from X1 to Xm
— Edge of
image
Horizontal
center line
of CRT
a= 2mm (0.079"")
Figure 5
= 250mm
9.84"
X (MAX) =
X (MIN) = Maximum distance between vertical lines from X1 to Xm
Y (MAX) = Maximum distance between horizontal lines from Y1 to Yn
Y (MIN) = Maximum distance between horizontal lines from Y1 to Yn
(D) Rotation
Horizontal center line of the image
shall be within the shaded area in
figure 5.
scalping Secs 2mm (0.079"’)
Input signal is a crosshatch pattern.
Other conditions are as stated in 6.1
Image test condition.
(E) Convergence
See figure 6.
Mis-convergence in
area (A) S 0.3 mm (0.0118")
Mis-convergence in
area (B) S 0.5 mm (0.0197)
Note: Should be measured under the
following conditions.
1) Terrestrial Magnetism without
horizontal field (0 Gauss).
With vertical field of 0.4 Gauss
2) At room temperature
3) Input signal; Cross hatch R, G,.
B mixed colors.
187.5mm
7.38"
areaA S 0.3 mm (0.0118"}
areaB S 0.5mm (0.0197"}
Figure 6

5.3 Image size variation
Notes and
test conditions
Image size variation
from the normal image size
Within 4 mm (0.157)
(Horizontal and Vertical)
Within + 4 mm (0.157)
(Horizontal and Vertical)
Rotation of
brightness VR
AC line voltage
varied 180 to 264
volts (90 - 144V)
External ambient
temperature
varied 25 + 25°C
Within +4 mm (0.157”)
(Horizontal and Vertical)
Testing condition is normal condition.
6. OVERALL PERFORMANCE
6.1 Resolution
810 Pixels
670 Pixels
Horizontal
Vertical
6.2 Insulation
More than 100 MQ
(Between AC line and chassis).
6.3 Jitter
Less than 1 dot
Invisible at a distance of 45 cm (17.7’') from
CRT surface.
6.4 Moiré
According to the timing of input signal,
are possibillities of visible moiré.
there
7. CONNECTOR
7.1 Power connector
TX-1441AE
POWER
AC GND AC
PINNO. 1. AC (LIVE)
2. GND (F/G)
3. AC (NEUTRAL)
CONNECTOR MONITOR USER SIDE, See Note 1
Mir. cesses AMP. Mit cistsadenicn AMP
3P Cap (350767-1) | 3P Plug (350766-1)
Male contact (350561-1)
Female contact (350570-1}
Note 1. ---
User side connectors are just for your
reference.
7.2 Signal connector
D-SUB TYPE 9P :
FEMALE PIN
SCREW :
Inch Type
PIN ASSIGNMENT OF IBM GRAPHICS ADAPTOR
IBM ADAPTERS
PIN ASSIGNMENT
COLOR GRAPHICS
TTL 16 COLORS
GROUND
ENHANCED
TTL 64/16 COLORS
GROUND
PROFESSIONAL
GRAPHICS ANALOG
RED (NOTE 1)
GROUND
SECONDARY RED
GREEN (NOTE 1)
PRIMARY RED
BLUE (NOTE 1)
PRIMARY GREEN
COMPOSITE SYNC
PRIMARY BLUE
+
MODE CONTROL
INTENSITY
SECONDARY GREEN/INTENSITY
RED GROUND
NON-CONNECTION
SECONDARY BLUE
GREEN GROUND
HORIZONTAL SYNC
HORIZONTAL SYNC
BLUE GROUND
VERTICAL SYNC
VERTICAL SYNC
GROUND

TX-1441AE
PIN ASSIGNMENT OF OTHER COMPUTERS
SIGNAL Pin
Assignment
ANALOG
16 Colors 64 Colors Separate Sync. | Composite Sync. | Sync. On Green
GROUND RED (NOTE 1)
Secondary RED GREEN (Note 1) Green H/V Sync.
(Note 2)
Primary RED BLUE (NOTE 1)
GREEN Primary Green | H/V Sync.
BLUE Primary BLUE
Intensity Secondary Gree
Secondary Blue
GROUND
H. Sync. / H/V Sync.
V. Sync.
eer er "means GROUND or NON-CONNECTION.
SIGNAL LEVEL
All signal level, except for those listed below, is TTL.
NOTE 1, means 0.6 V0-p (VIDEO)
NOTE 2, means 0.6 Vo-p (VIDEO), 0.3 Vp-p (SYNC)
7.3 Signal cable
This monitor doesn’t provide the signal cable.
Please prepare a shield cable of the coaxial type
to get the good image.
Necessary of sectional diagram of a signal cable
< An example >
Braided Wire
Coaxial cable should be used for the best
processing of video signal.
Otherwise deterioration in signal may occur.
Twist pair or coaxial cable for synchronizing
signal.

7.4 Standard signal timing (preset timing)
16 Colors
64 Colors
TX-1441AE
PGC ANALOG
Low Resolution
Mode (Mode L)
High Resolution
Mode (Mode H)
PIXEL PERIOD 69.797
PIXEL RATE 14.3182
Horizontal Frequency
Line Time Total
ACTIVE
BLANKING
FRONT PORCH
SYNC PULSE
BACK PORCH
Vertical Frequency
Frame Time Total
ACTIVE
BLANKING
FRONT PORCH
SYNC PULSE
BACK PORCH
ACTIVE DOTS 640x200
NOTE:
1) SCANNING MODE ......... NON-INTERLACED
2) IMAGE DUTY oe. 100%
640X350
40.000 nSEC
25.000 MHz
60.06
16.650
13.058
3.591
1.404
0.065294
2.122
640x400
40.000 nSEC
25.000 MHz
60.06
16.650
15.670
0.979
0.097941
0.065214
0.81618
640x480

TX-1441AE
7.4.1 Signal Timing (Separate Sync)
HORIZONTAL
VERTICAL
C v4 sy
t 1
Horizontal
Frequency (1/H1) 15.5 - 36 kHz
Line Time Total (H1) 64.5-27.8 usec
Blanking (H2 + H3
+ H4)
* Range 1:
10 Pgs ices ne) - ~ zB (usec) x 100%
* Range 2:
goes 7 (usec) x 100%
Front Porch (H4) >0 usec
Sync Pulse (H2) >1.5 usec
Back Porch (H3) > 1.2 usec
Sync +Back porch (H2+H3) >5.0 usec
Vertical
Frequency (1/V1) 50 - 100 Hz
FrameTime Total (V1) 20- 10 msec
Blanking (V2+V3+
V4) >06 msec
Front Porch (V4) >0 msec
Sync Pulse (V2) 0.05 -0.7 msec
Back Porch (V3) 06<V2+V3 msec
*Note: Range 1=15.5- 19 kHz
Range 2=19 - 36 kHz
7.4.2 Signal Timing
(Composite Sync and Sync on Green Video}
| Video | |
HORIZONTAL
(Composite On Video
Green Video) ! |
’
1
: 1
H2'_H3 ! H5 1H4 |
VERTICAL
(Composite)
VERTICAL
(on Green an
Video)
Horizontal
Frequency (1/H1) 15.5 - 36 kHz
Line Time Total (H1) 64.5 - 27.8 bsec
Blanking (H2+H3 +
H4)
* Range 1 :
10< meee (usec)
* Range 2 :
ge ie HGS (usec) x 100%
H1
Front Porch (H4) >0 usec
Sync Pulse (H2) >1.5 usec
Back Porch (H3) >1.2 psec
Sync +Back porch (H2+H3) >5.0 psec
Vertical
Frequency (1/V1) 50 - 100 Hz
Frame Time Total (V1) 20- 10 msec
Blanking (V2 +V3 +
V4) >1.0 msec
Front Porch (V4) >0 msec
Sync Pulse (V2) <0.2 msec
Back Porch (V3) > 0.8 msec

Display colors
TL WAPUt Mths.) ala dee 8/16 (Yellow)/16 (Brown)/64 Colors
ANALOG Input Unlimited Colors
Example of Color Function Table for TTL tnput
EGA 16 Colors : Function Table
[Vertical Sync Polarity : Positive]
16 Colors Output Level
Color Level
TX-1441AE
Light Magenta
Note 1: External control availability ‘O’’ means available
"xX" means unavailable
—~10—

TX-1441AE
EGA 64 Colors : Function Table
Vertical Sync polarity : Negative
Input Video Signal
z °
D
w Q)
o BB @ >
Relative Output Level
ODNMOhRON— e0000000 O0000000 eo0000000
~4+4220000
ooog00 COO oo0o000o0 coo
aa =O OOO
oooo0c0o0oo
eococe°co =44-40000
0
a
0
Q
0
0
ie)
0
amet COCO
ooo00o000 a2 ==-0000 ooocoo0o0°o
ecococo0no 42440000
oo0000000 ==-=430000
|=42440000
Note 1: See Note 1 of prior page.
=3200—-~“00 =4-0CO-=900 |=-300-=00 =3900--~00 -=ACO4~00 =300- =00 “—~+O0-3~00
4+300--00
7AO+0-+0-0 ~0o~-0-0-0 7oOo-O- O-90 “~O-0+0-0
=0-0-0-0
+~O=-0O-0-0
-7~O-+0-0+0
lack
L. Blue
L. Green
L. Cyan
L. Red
L. Magenta
L. Yellow
L. White re ee eS)
D. Green
H. L. Green
. Magenta
. L Magenta
. Yellow
. L. Yellow
. L. White
aan a
q
Sie a
x «mK KK MK KK
Ooo00000x
eoo0o00000 e©o0000 O00
eooo0000°0 eooo00o0000 oo0o000 000 oo00c0000
ao0o00000 eo0o0o0000
eo000000
ooo0o0000 ooo0o0o000 eoo000000
eo0000000 eoo000000
High Light (Brighter)
Low Light
Dark

TX-1441AE
8. FAULT AND DEFECT CRITERIA
defects
Zone dimensions (mm)
Permissible major
A
127 x 178
More than 0.76
Air bubble (average diameter, mm)
Black spot, stain, hole and open More than 0.66
air bubble (average diameter, mm)
Each zone
Maximum permissible number
Minimum allowable distance among
defects (mm)
defects
Permissible minor
Air bubble (average diameter, mm)
0.50~0.75 0.50~0.75
0.50~0.65 0.50~ 0.65
Black spot, stain, hole and open
air bubble (average diameter, mm)
Maximum permissible number Each zone
1
diameter
Elongated air
bubbie
(permissible
size)
Note: 1)
2)
Permissible defects
any circle of 50 mm
Air
bubble
(average
diameter,
mm)
0.50~0.75
|
0.25~0.75
0.25~0.75
Black
spot,
stain,
hole
and
open
0.50~0.65
|
0.50~0.65
0.50~0.65
air bubble (average diameter, mm)
Maximum permissible number
Minimum allowable distance
among defects (mm)
Width
(mm)
0.13~0.25
|
0.26~0.50
|
0.13~0.25
|
0.26~0.50
Length
(mm)
Less
than
|
Lessthan
|
Less
than
|
Less
than
9.0
5.0
10.0
6.0
This is also applied to the distance to major defects.
This should be evaluated by its average diameter, and then relevant standards of air bubble are applied
except maximum permissible number of each zone and minimum allowable distance among defects.
(Even if the average diameter of elongated bubble exceeds that of major defects, this is treated as a
|
permissible major defects.)
2425

TX-1441AE
9. COLOR CRT PHOSPHOR DEFECTIVE STANDARD
Defective Defect Phenomenon New Standard
Min. spacing
ii te between
Level Example
®@ B® ®@
®®R@BO
O22 2926)
OBOO
OO®8O
O00 ®
Dot trio missed over
3 adjacent trios
Same color dots missed
over 3 adjacent dots
Dot trio missed
2 adjacents
2 dots missed out of 1 trio
2 adjacents trios
Between other
color 20 mm
Same color dots missed 1 defect
2 adjacent x
3 colors
1 trio missed
2 dots missed out of
1 trio
1 dot missed
Between trio
20mm
Between trio
20 mm
Between same
color dots
20mm
Definition (S)
Missing dot+- (Q
OQ -0OK
-{ul- -{u-
Lx 50% >a>L x 25%
Less than 5 within the circle of 50 mm @
Missing some portion of one dot
Min. spacing between defect 20 mm
Less than 6 defects
e Same as left
e Below the spacing standard shall be judged again
with adjacent standard.
Total defects on one CRT
Others

10. ENVIRONMENTAL CHARACTERISTICS
10.1 Ambient temp., humidity and altitude
Storage
and ship-
ment
Non-ope-
rating
Operating
Note
0 to 50
—40 to 65
degrees C degrees C
Humidi- 5 to 90% 5 to 90% 5 to 90%
ty no con- no con- no con-
densation densation densation
3,000 m 12,000 m 12,000 m
Altitude Max. Max. Max.
(10,000 ft}} (40,000 fr)| (40,000 ft)
Note
*CAUTION : Installation to your system
—40 to 65
degrees C
1) Never be hermetically shielded.
2) Give an appropriate ventilation (Air flow) to cool
down the monitor below 50 degrees C in the worst
case for the longer life.
Please keep them for the long life.
10.2 Vibration and Shock
10.2.1 VIBRATION
The color monitor must pass the fol-
lowing vibration test.
(Packed condition)
1) Frequency ...5 to 55 Hz
(Sweep cycle 120 seconds)
2) Length of time for testing
Vertical ...... 60 minutes
Horizontal .. 60 minutes
(Front and Rear :
30 minutes)
(Right and Left :
30 minutes}
3) Acceleration of Vibration
Vertical ....... 1.25G
Horizontal .,.0.75G
10.2.2 Shock
The color monitor must pass the fol-
lowing drop shock test.
(Packed condition)
[Trent [Tires]
A,B,C,D Totally
E,F,G,H,IJ 10 times
eras:
TX-1441AE
1 {Front) D ~~ H (Bottom) A (Corner)
Shock is given to A, B, C, D, E, F, G, H, !
and G totally 10 times.
10.3 SAFETY SPECIFICATION
Shall be certified with
TUV, BS415
VDE0871 (A)

TX-1441AE
DIMENSIONS
[ass [ison [108 | wna |
or [ace aes | rai8 | 78 |
9PIN D-SUB
HOODOO DOOOO OOOO OODOOOOOOOOOO fet
—15—

(CH) MAX
277t1. 2
TX-1441AE
Wood
i
salt
fe-~!
—+-4L--
345. 741. 2
(Db) TYP.
= 16 =
304./8t1. 2

TX-1441AE
COMPONENT LOCATION
CRT
M34JDJ80X
WEDGE
TMM85511
DEFLECTION YOKE
TXALY85327B1
SIDE PLATE (L)
TUW87908
MAIN P.W.A
TNP890253-31
L47=
AC INPUT CONNECTOR
TXAJTA3P 1427
CRT SOCKET BOARD
TNP800166-21
1/F P.W.A
TNP800167-31
SIDE PLATE (R)
TUW87909

= = NO =—
CONTROL LOCATION
67 8 91011
A
40 39 38
.. BRIGHTNESS (VR1301)
... CONTRAST (VR1300)
.. DIFFERENTIAL RESISTOR
.. DIFFERENTIAL COIL
.. SUB H. POSITION (VR533)
.. SUB H. POSITION (VR532)
.. SUB H. WIDTH (VR553)
.. SUB H. WIDTH (VR554)
.. SUB V. HEIGHT (VR405)
... SUB V. HEIGHT (VR404)
.. SUB V. HEIGHT (VR408)
.. H. HOLD (VR501)
..H. FERREN (VR502)
..V. PCC (VR751)
ON OO WN =
or
—_> Ww
16.
16...
17...
18 ....
19...
20 ....
21...
22 wu
23 s.00
24...
25...
26 ....
27 ....
28 ....
.V. LIN (VR402)
SUB V. HEIGHT (VR407)
SUB V. HEIGHT (VR406)
SUB H. WIDTH (VR555)
SUB H. WIDTH (VR556)
SUB H. POSITION (VR535)
SUB H. POSITION (VR534)
LOW LIGHT (B) (VR3372)
LOW LIGHT (G) (VR3371)
LOW LIGHT (R) (VR3370)
FOCUS CONTROL
SCREEN CONTROL
H. CENT (VR551)
+B ADJ (VR841)
TX-1441AE
21 20 19 18 17 1615141312
34 35 36 37
22 23 24
29 ....
30...
31...
32 ....
33 ....
34...
35...
36 ....
37 oe
38 ....
39 ....
40
41...
42 ....
43 ....
29 28 27 +26 25
SUB BRIGHT (VR 361)
ANALOG/TTL SW (SW1301)
AUTO/MANUAL SW (SW1302)
TEXT ON/OFF SW (SW1304)
COLOR SELECT SW (SW1303)
H, POSITION (VR531)
H. WIDTH (VR552)
V. POSITION (VR431)
V. HEIGHT (VR403)
PED ADJ (VR1305)
R. GAIN (VR1301)
B. GAIN (VR1303)
SUB CONTRAST (VR1309)
2/3 D-A (VR1311)
1/3 D-A (VR1312)

TX-1441AE
Interface Block Removal
1.
Remove the four screws that fasten the interface
block to the side plate (right) and side plate mount.
. Disconnect the CN102B connector from the interface
board.
. Straighten the clamper that fastens the ferrite core,
and remove the ferrite core.
. Remove three screws on the shield cover.
. Disconnect the CN1301, CN1304, CN1305 and CN-
1306 connectors from the interface board.
. Disconnect the V301, V302, and V303 phone jack
connectors from the interface board.
. Remove the four screws that fasten the interface
board to the chassis.
. Raise the interface board as shown and remove it.
CN1304 CN1306 CN1305
CN1301
DISASSEMBLY INSTRUCTIONS
Remove screws
Interface bolck
Remove screws
Fig. 1
Remove screws
Ferrite core
Clamper
Fig. 2
Interface board
— 19 —