TU 2155 SB
SERVICE MANUAL Ultra slim Series Shiny Black
.
2
.
SAFETY PRECAUTIONS 1.
The design of this product contains special hardware, many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Service should be performed by qualified personnel only.
2.
lterations of the design or circuitry of the products should not be made. ny design alterations or additions will void the manufacturer!s warranty and will further relieve the manufacturer of responsibility for personal in"ury or property damage resulting therefrom.
3.
#any electrical and mechanical parts in the products have special safety$related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the parts list of Service manual. Electrical compoets !a"i# s$c! %eat$res are i&eti%ie& '( s!a&i# o t!e sc!ematics a& '( ) * o t!e parts list i Ser"ice ma$al. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement part shown in the parts list of Service manual may cause shoc%, fire, or other hazards
+.
,o-t s!ort 'etee t!e LIVE si&e #ro$& a& ISOLATE, )NEUTRAL* si&e #ro$& or EART/ si&e #ro$& !e repairi#. Some model!s power circuit is partly different in the &'(. The difference of the &'( is shown by the )*+- / side &'(, *S0)T( 'TR)/ - / side &'( and RT2 - / side &'(. (on!t short between the )*+ side &'( and *S0)T( 'TR)/ side &'( or RT2 side &'( and never measure with a measuring apparatus oscilloscope etc./ the )*+ side &'( and *S0)T( 'TR)/ side &'( or RT2 side &'( at the same time. *f above note will not be %ept, a fuse or any parts will be bro%en.
3.
*f any repai r h as been m ade to the chas sis , i t i s recommended that the 41 setting should be chec%ed or ad"usted See (5ST#'T 0F 41 607R S66)8/.
9.
The high voltage applied to the picture tube must conform with that specified in Service manual. :cessive high voltage can cause an increase in ;$Ray emission, arcing and possible component damage, therefore operation under e:cessive high voltage conditions should be %ept to a minimum, or should be prevented. *f severe arcing occurs, remove the < power immediately and determine the cause by visual inspection incorrect installation, crac%ed or melted high voltage harness, poor soldering, etc./. To maintain the proper minimum level of soft ;$Ray emission, components in the high voltage circuitry including the picture tube must be the e:act replacements or alternatives approved by the manufacturer of the complete product.
0.
(o not chec% high voltage by drawing an arc. se a high voltage meter or a high voltage probe with a +T+#. (ischarge the picture tube before attempting meter connection, by connecting a clip lead to the ground frame and connecting the other end of the lead through a 1=% Ω >7 resitor to the anode button.
1.
7hen service is required, observe the original lead dress. :tra precaution should be given to assure correct lead dress in the high voltage circuit area. 7 here a short circuit
has occurred, those components that indicate evidence of overheating should be replaced. lways use the
.
manufacturer!s replacement components. 4. Isolatio C!ec5 )Sa%et( %or Electrical S!oc5 /a6ar&* fter re$assembling the product, always perform an isolation chec% on the e:posed metal parts of the cabinet antenna terminals, video?audio input and output terminals,
)2*
3
,ielectric Stre#t! Test The isolation between the < primary circuit and all metal parts e:posed to the user, particularly any e:posed metal part having a return path to the chassis should withstand a voltage of @===+ < r.m.s./ for a period of one second. A7ithstand a voltage of 11==+ < r.m.s./ to an appliance rated up to 1>=+, and @===+ < r.m.s./ to an appliance rated >==+ or more, for a periode of one second./ This method of test requires a test equipment not generally found in the service trade. Lea5a#e C$rret C!ec5 6lug the < line cord directly into the < outlet do not use a line isolation transformer during this chec%./. sing a B)ea%age m < r.m.s./. Alterate C!ec5 Met!o& 6lug the < line cord directly into the < outlet do not use a line isolation transformer during this chec%./. se an < voltmeter having 1=== ohms per volt or more sensitivity in the following manner. m < r.m.s./
TV 7loc5 &ia#ram TDA11105-XXXX
Vo
id!o
TUNER
SA8
IF IN
R IN
R
RF A9C
9IN
9 7 C
7 IN id!o
id!o
C/ROMA
AR i
4052
VI,EO CV7S:Y IN
ALi $id!o IN
CV7S IN CV7S2 IN
24C08
"u#
S,A SCL MAOUTR MAOUTL
ARo ALo ARi 2
MA IN L MA IN R
ALi 2
R97 OUT / OUT
V OUT
id!o
V2i audio
ALi2
audio
ALi 1V AN17821
Vi OUT= OUT;audio
34V 2+V POWER UNIT
;3V
+ *'
2 *'
TDA8177
H OUT
+ 0T
2 0T
=3V 1V
244V
CRT PCB
SCREEN FOCUS
CRT
Vi2 OUT2= OUT2;
REPLACEMENT OF MEMORY IC 1. ##0R8 *<. This T+ uses memory *<. *n the memory *< are memorized data for correctly operating the video and deflection circuits. 7hen replacing memory *<, be sure to use *< written with the initial value of data. >. 6R0<(R F0R R6)<*'& ##0R8 *< 1/ 6ower off Switch the power off and unplug the power cord from < outlet. >/ Replace *< 4e sure to use memory *< written with the initial data values. @/ 6ower 0n 6lug the power cord into the < outlet and switch the power 0n. E/ /
6ress menuG %ey, appear the picture menu, press few character %eys 9EI@, the screen appears #.
REPLACEMENT OF MEMORY IC 1. ##0R8 *<. This T+ uses memory *<. *n the memory *< are memorized data for correctly operating the video and deflection circuits. 7hen replacing memory *<, be sure to use *< written with the initial value of data. >. 6R0<(R F0R R6)<*'& ##0R8 *< 1/ 6ower off Switch the power off and unplug the power cord from < outlet. >/ Replace *< 4e sure to use memory *< written with the initial data values. @/ 6ower 0n 6lug the power cord into the < outlet and switch the power 0n. E/ /
6ress menuG %ey, appear the picture menu, press few character %eys 9EI@, the screen appears #.
+* 6ress standbyG %ey, withdraw factory mode. <* The BTSTC will be displayed on the screen. 9/
SERVICE A,>USTMENT 41 607R S66)8 1. Receive normal colour bar signal. 2. 1 inch hereinafter, 1@= K1.=+ for >3 inch upwards.
F0<S (5ST#'T 1. Receive a crosshatch signal. >. 7hile watching the screen, ad"ust the F0<S +R to ma%e the vertical and horizontal lines as fine and sharp as possible.
7US CONTROL A,>USTMENT To enter 4S control mode, 6ress BTSTC %ey on the Remote control unit of factory. ( L menu, one by one in order press the numerical %eyL9, E, I and @L, press L#TL %ey again can depend on this get into L#@LML#NL of design menu, general factory the ?
production doesnHt need to carry on # @M ad"ustments of #N. *n L#=LMunderL#NL appearance pressC <))C the %ey can get into L#L appearance. t B#Cunder the appearance press B$?$B the %ey can get into B4S 06'C appearance, at B4S 06' under, press B$?$B the %ey recover factory appearance.
Remote 2and nit %eys [M1]
[M2]
[M3]
/ori6otal lie [M0]
S!a&o
@M me$ #'= &eometrical ad"ustment Receive 6) standard I1, yQ@11 c/ Sub$4rightness ad"ustment. se stair case signal/ 1. Select S4 menu. >. d"ust S4 to get the dar%est step being cutoff. 0
a
>
* < standard 0< for e:port bus control ad"ustment item default setting
1
2441==
4
EY 7OAR,D m$ltiple=c!oice test)4:*
4D Cotrol 5e(s ip$t )Ma. Limit "olta#e* ===)ME EY 7OAR,* F$ctio
PO8ER
MENU
TV:AV
V=
V;
P=
P;
Volta#e
4
4.+2<
4.12<
.230<
.?<
2.4?2<
2.+0<
V;
P=
P;
.3
4.+
4.4
D Cotrol 5e(s ip$t )Ma. Limit "olta#e* )SANYO EY 7OAR,* F$ctio Volta#e
PO8ER
MENU 2.2
TV:AV .0<
V= 2
4.1<
+ G LO9O E,IT This software )0&0 is a pair of pleased words and customer to edit > %inds, at the ##0(, long press6.6Gthe %ey can get into a pair of pleased words editor appearance. 0perate 6ress1G?>G %eys- The )0&0 perpendicular position ad"ust, 1G ad"usts upward, >G get down ad"ustment 6ress@G?EG %eys- The )0&0 level position ad"ust, @G is to the left ad"ustment, EG rightwards ad"usts 6ressR+*7G%ey- 7ithdraw )0&0 editor appearance, the )0&0 information remembers 6R0# and return to ##0( 6ress again#'Gthe %ey can get into and can edit )0&0 appearance. 0perate 6ress1G?>G %eys- The )0&0 perpendicular position ad"ust, 1G ad"usts upward, >G get down ad"ustment 6ress@G?EG %eys- The )0&0 level position ad"ust, @G is to the left ad"ustment, EG rightwards ad"usts 6ress3G?9G %eys- The color choice of the )0&0 character list, 3G regulate the first color, 9G regulate the second color 6ressDG?IG %eys- The )0&0 character list size ad"ust, DG regulate the first size, IG regulate the second size 6ress=G %eys-(elete the letter of alphabet of importation 6ressG?G%ey- The )0&0 character list choose=MNMOaMz L-.J$?UL, S6</ 6ressG?G%ey- #ove cursor 6ressR+*7G%ey- 7ithdraw )0&0 editor appearance, the )0&0 information remembers 6R0# and return to ##0( 3. The O00# ad"ust. t the ##0(, pressO00#G%ey- 6ress when screen showed LO00#L orL19-NL+0)JG?+0)$Gthe %ey regulated O00#?19-N of field.
ICs %$ctioal &escriptio UOC T,A4<=HHHH:T,A4?=HHHH S8#40)
6*'
(S
*F +0
1
*F video output ? selected <+4S output
+6>
>
>'( Supply voltage T+ processorJ3v/
+<< (*0
@
I volt supply for audio switchesJ3+MI+/
6)) *F
E
*F$6)) loop filter
&'(>
3
&aound > for T+ processor
(
9
decoupling sound demodulator or S*F input >
F#(#0T
D
audio output ?# audio output volume controlled/ 3
2T0
I
2T?overvoltage protection input
&<
N
Tuner &< output
*RF
1=
Reference current input
+S<
11
+ertical sawtooth capacitor
*F *'>
1>
*F input 1
*F *'1
1@
*F input >
+(R
1E
+ertical drive output
+(R4
13
+ertical drive 4 output
+)?7
19
utomatic volume leveling ?ST$7ST drive output
(<4&
1D
4and gap decoupling
S<6))
1I
S<# 6)) decoupling
&'(1
1N
&round 1 for T+$processor
621)F
>=
6hase$1 filter
62>)F
>1
6hase$> filter
+61
>>
1st supply voltage T+$processorJ3+/
(<(*&
>@
decoupling digital supply of T+$processor
;T)0T
>E
crystal oscillator output
;T)*'
>3
crystal oscillator input
*R
>9
Remote control signal input.
#T
>D
Sound mute output
T*)T?2F
>I
V8
>N
4'(>
@=
Tuner 4and selection output
4'(1
@1
Tuner 4and selection output
T'*'&
@>
tuning +oltage +t/ 67# output
+((6
@@
Supply to periphery$@.@+/
S(
@E
*><$bus data line
S<)
@3
*><$bus cloc% line
+1
@9
T+?+ +1/ ? +> mode
+>
@D
T+?+ +1/ ? +> mode
ST'(48
@I
*n ST'( 48 mode, high level 6ower 0FF/.For 6ower 0' this pin will be reduced to low.
3=?9=
@N
+((<
E=
Supply@.@+/
&'(3
E1
&round 3
+6
E>
06T programming +oltage
+((
E@
Supply voltage@.@+/
40T
EE
4lue output
&0T
E3
&reen output
R0T
E9
Red output
4)V*'
ED
blac% current input ? +$guard input +
4<) *'
EI
beam current limiter input
64
EN
4 input ? 4$8/ input ? 64 input
8@?<+4S@
3=
& input ? 8 input
6R?<@
31
R input ? + R$8/ input ? 6R input
80T
3>
8$outputfor 8+ interface/
8 S8'<
3@
8$input for sync separator
+6@
3E
Supply voltage3+/
&'(@
33
&round connection
20T
39
2orizontal output
F4*S0
3D
Flybac% input?sandcastle output
)SR
3I
udio output R
)S)
3N
udio output )
<>?<@?
9=
S$+*(0 < *'
*'@?*'1R
91
R (*0 *'
<+4S>?8>
9>
+> +*(0 *'
*'>?1*')
9@
) (*0 *'
<+4S?8E?*'3)
9E
+1 +*(0 *'
AN0<22:AN012:AN0<23:AN0123
Function - a$&io o$tp$t
Symbol
6*'
Function
Symbol
6*'
Function
+cc
1
6ower supply
&'(
D
ground
0ut 1 J/
>
*n >
I
input
&'(out 1/
@
+0)
N
+olume
0ut 1 $/
E
0ut > $/
1=
output $/
Standby
3
#ute input
&'(out >/
11
&round
*n 1
9
0ut > J/
1>
output J/
'ote- 'D3>@ is pin 1 to N, 'D3>> is pin 1 to 1>.
LA342A:100:LA014+:LA014+4 S(m'ol
PIN
Function - "ertical o$tp$t
F$ctio
S(m'ol
PIN
F$ctio
INV IN
Ip$t
V OUT
<
Vertical o$tp$t
VCC
2
Poer
VCC2
?
O$tp$t poer s$ppl(
PUMP UP
3
P$mp $p poer
NON INV IN
0
Ne#ati"e %ee&'ac5
9N,
+
9ro$&
Test poit 8a"e%orms
2.?Vpp
.2Vpp
3.1Vpp
2.
2.
< /
/
T,A4< PIN
T,A4< PIN<2
/
/
T,A4< PIN+< T,A4< PIN++
/ T,A4< PIN+?
/
/
CRT R Vpp
CRT 9 4.1Vpp
V
22Vpp
/
/ T,A4< PIN 2.0Vpp
T,A4< PIN<0
32/ / V+< 7
T,A4< PIN2+
/
444Vpp
V+< C
344Vpp
/
4.Vpp
V
T,A4< PIN+ T,A4< PIN<
CRT 7 .3Vpp
/
/
/EATER
T< PIN0
T(I1DD ? STN@=>? )DI=E= or )DI=E1 PIN
2
3
+
<
?
0
V
4.0
<
=2
=<
4.3
<.
=4.40
' D3>>?'1DI>1 'ote- 'D3>@ is pin 1 to N, 'D3>> is pin 1 to 1>./ PIN
2
3
+
<
?
0
1
4
2
V
2
0
4
0
3.3
.+
4
.+
4
0
4
0
PURITY : CONVER9ENCE A,>USTMENT
?
PURITY A,>USTMENT 8E,9E
1.
(emagnetize
>.
)oosen the retainer screw of the deflection yo%e.
@.
Remove the wedges.
E.
*nput a green raster signal from the signal generator, and turn the screen to green raster.
,EFLECTION YOE
P
CRT
3.
#ove the deflection yo%e bac%ward.
9.
4ring the long lug of the purity magnets on the short lug and position them horizontally. Fig>/
D.
+ ?
P:C MA9NETS
6- 6R*T8 #&'T E- E$60)S convergence magnets/
d"ust the gap between two lugs so that the &R' RSTR will come into the center of the screen. Fig. @/
1.
#ove the deflection yo%e forward, and fi: the position of the deflection yo%e so that the whole screen will become green.
N.
*nsert the wedge to the top side of the deflection yo%e so that it will not move.
9- 9$60)S convergence magnets/
Fi#.
PURITY MA9NETS Lo# l$#
1=. *mput a crosshatch signal. 11. +erify that the screen is horizontal. 1>. *nput red and blue raster signals, and ma%e sure that S!ort l$# purity is properly ad"usted. 4ring the long lug over the short lug and position them horizontally.
Fi#. 2
FR0'T +*7/ &R' RSTR
<'TR
Fi#. 3
0
STATIC CONVER9ENCE A,>USTMENT 1. *nput a crosshatch signal. >. sing E$pole convergence magnets, overlap the red and blue lines in the center of the screen Fig. 1/ and turn them to magenta red?blue/. FR0'T +*7/
@. sing 9$pole convergence magnets, overlap the magenta red?blue/ and green lines in the center of the screen and turn them to white. E.
Repeat > and convergence.
@
above,
and
ma%e
the
best
Fi#. FR0'T +*7/
,YNAMIC CONVER9ENCE A,>USTMENT
R(
1. #ove the deflection yo%e up and down and overlap lines in the periphery. Fig. >/ >. #ove the deflection yo%e left to right and overlap the lines in the periphery. Fig. @/ @.
Repeat 1 and convergence.
>
above,
and
ma%e
the
&R' 4)
4) R( &R'
&R'
R(
best
4)
4) &R' R(
Fi#.2
FR0'T +*7/ fter ad"ustment, fi: the wedge at the original position. Fasten the retainer screw of the deflection yo%e. Fi: the 9 magnets with glue.
R( &R' 4)
4) &R' R( R(
&R'
4)
4)
&R' R(
Fi#. 3
1