Text preview for : tv_color_®_.pdf part of Sharp CX-6336 Service Manual Pal System Colour Television Linytron - pag. 28
Back to : tv_color_®_.pdf | Home
SHARP
111 Liilwiqf~ffU
PAL SYSTEM COLOUR TELEVISION
SERVICE MANUAL
S96M8CX6336l
NC-6 CHASSIS
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.
f
l l l
CONTENTS
page ELECTRICAL SPECIFICATIONS . . . . . . . . . . . . . 1 IMPORTANT SERVICE NOTES . . . . . . . . . . . . . . 2 SERVICE ADJUSTMENT. . . . . . . . . . . . . . . . . . . 3 TROUBLE SHOOTING TABLE . . . . . . . . . . . . . . 6 CHASSIS LAYOUT DIAGRAM . . . . . . . . . . . . . .ll PRINTED WIRING BOARD ASSEMBLIES . . . . . .13 BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . .15 SCHEMATIC DIAGRAMS AND WAVEFORMS. . . . . . . . . . . . . . . . . . . . . . . . . . .19 REPLACEMENT PARTS LIST . . . . . . . . . . . . . . .24
ELECTRICAL SPECIFICATIONS a-w,
Aerial Input Impedance . . . . . . . . . . . 75 ohm unbalanced Convergence . . . . . . . . . . . . . . . Self Converging System Focus . . . . . . . . . . . . . . . . . . . . Bi-potential electrostatic Audio Power Output Rating . . . . . . . . . . . . . 2.OW max. Intermediate Frequencies Picture IF Frequency . . . . . . . . . . . . . . . 36875MHz Sound Carrier Trap . . . . . . . . . . . . . . . . . 31.375MHz Adjacent Sound Carrier Trap . . . . . . . . . . 38.375MHz Power Input . . . . . . . . . . . . . . . . . . . . . 240V AC 50Hz Power Consumption . . . . . . . . . . . . . . . . . . . . . . 12OW Speaker . . . . . . . . . . . . . . 10cm Round Dynamic x 1 pc. Sweep Deflection . . . . . . . . . . . . . . . . . . . . . . Magnetic Tuning Ranges . . . . . . . . . . . . . . VHF Channels 0 thru 11 UHF Channels 28 thru 63
. . . . . .
1 Specifications are subject to change without prior notice 1
WARNING
The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power receptacle, when servicing this chassis. To prevent electric shock, do not remove cover. No user - serviceable parts inside. Refer servicing to qualified service personnel.
SHARP CORPORATION
IMPORTANT SERVICE NOTES
Maintenance and repair of this receiver should be done by qualified service personnel only.
SERVICING OF HIGH VOLTAGE SYSTEM AND PICTURE TUBE
When servrcrng the hrgh voltage system, remove static charge from it by connectrng a 10k ohm Reststor in series wtth an Insulated wire (such is a test probe) between picture tube tag and 2nd anode lead. (AC ine cord should be disconnected from AC outlet.) 1. 2. 3. 4. Picture tube in thus receiver employs integral Implosion protection. Replace with tube of the same type number for continued safety. Do not lift picture tube by the neck. Handle the picture tube only when wearing shatter-proof goggles and after discharging the high voltage completely.
X-RAY
This receiver IS designed so that any X-ray radiation IS kept to an absolute minimum. Since certain malfunctions or servicing may produce potentially hazardous rediation with prolonged exposure at close range, the following precautions should be observed: 1.' When repairing the circuit, be sure not to increase the high voltage to more the 30kV, (at beam 1 .l mA), for the set. 2. To keep the set in a normal operation, be sure to make it function on 27.5kV _+ 1.5 kV (at beam 1.3 mA) In the case of the set. The set has been factory-adjusted to the above-mentioned high voltage. .`. If there is a possibility that the high voltage fluctuates as a result of the repairs, never forget to check for such high voltage after the work. 3. Do not substitute a picture tube with unauthorized types and/or brands which may cause excess X-ray radiation.
BEFORE RETURNING THE RECEIVER
Before returning the receiver to the user, perform the following safety checks. 1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the receiver. 2. Inspect all protective devices such as non-metallic control knobs, insulating fishpapers, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacity networks, mechinira! insulators etc.
2
SERVICE ADJUSTMENT
Precautions:
How to prevent ICs from damages due to static electricity 1. When replacing or handling the IC, be sure to put on your wrist a metal ring (earth ring1 that is connected - to ground. * Avoid touching the IC directly by hand as much as --_ _ _ possible. 2. For the soldering iron and other jigs in use, be sure to connect them to ground so that their potential is the same as that of the PWB and/or IC. 3. The PWB cannot be connected to ground in some condition although you attempt to attach the rC to that PWB. In this case, be sure to keep the PWB at the same potential as ground by touching it by your hand on which a metal nng is put. 4. When handling the IC, it is recommended for you to wear such clothes as not causing static electricity; the ones of wool, silk or synthetic fiber should be avoided. This is Important in particular when handling the IC In a dry environment. 3. Connect the response lead to TP207. 4. Connect a resistor of 100 ohms to both ends of R235 (10k ohms). Note: Keep the lead of the 100 ohm resistor a s short as possible. 5. Apply AGC voltage to AGC (TP203) and adjust AGC voltage so that the waveform on oscilloscope is 1 VP-P. 6. Make sure that the overall waveform is as s h o w n in the figure below. If not, adjust it with the aid of IF transformer of the tuner.
Note: Perform the service adjustment following the procedures shown below.
P-detector coil adjustment: T201 1. Connect sweep output to TP202. l Sweep central frequency: 36.875MHz l Sweep output: 80 dB 2. Connect the response lead of oscilloscope to TP207. 3. Apply AGC voltage to AGC (TP203). Note: The AGC voltage should not exceed 7V. 4. Adjust AGC voltage so that the waveform on oscilloscope becomes 1 Vp-p. 5. Adjust T201 so that the waveform peak on oscilloscope becomes aligned with P marker.
IF transformer
AFT adjustment: T202 1. Receive sequential colour bar signal. 2. Connect 36.875MHz oscillator to TP202 across a capacitor of 1pF. 3. Connect oscilloscope to TP207. l Oscilloscope range: 0.5V/cm AC 4. Adjust the output of 36.875MHz oscillator to have the waveform beating on oscilloscope be observable. 5. Adjust the tuning control so that the waveform on oscilloscope is free from beating. l Set the band switch at VHF position and adjust the tuning control. 6. Set the band switch at normal position and adjust TP202 so that the waveform on oscilloscope is free from beating. l Turn on AFT switch. Note: Set the RF AGC control (R224) to obtain normal picture.
T
i
Overall waveform
output
1 VP-P
T
1
36.875 MHz
1. Receive loch. signal. 2. Connect sweep output to the tuner test point through the specified jig. l Sweep output: 70 dB
gztor's e-4hk-+ ,.8K &-g-o
~redds"t Adjust for zero-beating.
3
RF AGC cut-in adjustment: R224 1. Receive 10 ch. signal. 2. Set the signal input level at 52 + 1 dB. 3. Connect CR oscillator to TP204 across a capacitor of lOpF/16V: This capacitor is to cut off DC supply. l Oscillation frequency: 1kHz sine wave. l Output voltage: 0.1 Vp-p (Output voltage available at TP204) 4. Adjust R224 so that 1 kHz signal disappears from TV screen. 5. Set the signal input level at 52 + 3 dB and check that 1 kHz signal appears on TV screen. If 1 kHz signal does not appear, set the input signal level at 52 dB again and follow the procedure in step 4 again.
12. Adjust each drive control for good white balance. l Colour temperature: 7300OK ( Y=O.310 ) 13. Adjust brightness control and contrast control to obtain a dark picture. If the white balance is disturbed, adjust the bias control to obtain good white balance. 14. Again brighten the picture and adjust each drive control for good white balance as in step 12 above.
x=0.303
Carrier wave-phase adjustment: R826 1. Receive sequential colour bar signal. 2. Connect oscilloscope to K4 terminal (blue) and adjust synchronism of oscilloscope to obtain the waveform as shown in the figure below.
Sub-brightness adjustment: R421 1. Turn S501 on by tipping it rightwards in order to let the raster be linear. 2. Set each control as follows: l Screen control: at MIN position l Sub-brightness control (R421): at MIN position l R-bias control (R862) l G-bias control (R863) l B-bias control (R864) l G-drive control (R857-A) l B-drive control (R857-B) l Contrast control: at MIN position l Brightness control: at CENTER position l Picture tone control: at CENTER position l Colour control: at MIN position 3. Receive lion head pattern signal. 4. Connect oscilloscope to TP850. 5. Adjust R421 so that the waveform on oscilloscope is at 15 Vp-p.
minimum
l-l
3. Adjust the phase control so that the part@of B-Y output waveform becomes minimum as shown in the figure above.
Sub-colour adiustment: R817 1. Receive sequential colour bar signal. 2. Set each control as follows: l Contrast control: at MAX position l Brightness control: at CENTER position l Colour control: at CENTER position l Picture-tone control: at CENTER position 3. Connect oscilloscope to TP850. 4. Adjust R817 so that the white output (75%) and red output will have the same level.
Horizontal Size adjustment: 1. Receive lion head pattern signal. 2. If the horizontal size is at less than 7% of overscanning, insert the socket into the opening (2). Background adjustment: Screen control R862 R863 R864 R857-A/B 6. Remove oscilloscope from TP850. 7. Adjust the screen control so that raster of red, green, or blue appears dimly on screen. 8. Adjust the bias controls except for dimly appearing colour to let the picture on screen be white. 9. Adjust the screen control to obtain cut-off point of CRT. 10. Turn S501 off by bringing it back to the center in order to resume the normal raster. 11. Set the contrast control at MAX position.
Vertical size adjustment: R525 3. Adjust R634 to have proper horizontal center.
4
Vertical linearity adjustment: R520
-
Protector check 1. Apply DC25V to D605 (cathode side), and check .that the protector remains inoperative. 2. Apply DC 30V to D605 (cathode side), and check that the protector gets operative. 3.-Connect a resistor (10k ohms) between base of Q603 and ground, and check that the protector gets operative.
1. Receive lion head pattern signal. 2. Adjust R520 to obtain good vertical linearity. ,* .I -__ _ .
Vertical size adjustment: R525
3. Adjust R525 to have 10% of the vertical overscan.
Vertical center adjustment: S502
--
1. If the vertical center of picture is 3mm higher than the center of CRT, set S502 at "down" position. If it is 3mm lower than the center of CRT, set S502 at "up" position.
5
_-
TROUBLE SHOOTING TABLE
: -! - _- : ..:- -__ I__ \
l
0
l l
0
Checked Circuits Power Regulator Circuit Horizontal Deflection Circuit Picture tube Bios Circuit Video Circuit Picture tube
r
t When the power switch is push on, is there caused a raster? . _ _.
No
Yes .- ^ , t Norma I
_.
Are the Fuse (F7001) blown?
t
Yes
v Replace the tuse with new one c The tuse is ogain blown out
I No
.
Abnorma I
r - - - - L---------a
-
-
-
-
1
a------m--d
.
I
l
Checked Circuits Horizontal Output Circuit
NO HRIZONTAL SCANNING
A bnormo I
Check Q601, T601, R640 and Horizontal Drive Circuit I Normal
w--m- 1 Abnorma I 1 I - - - - - - - - - - - -1 I C h e c k (2601, T601, l 1 R640 and- Horizontal 1 I Drive Circuit L------------d I
t
I l OSC . Circuit I L----------d
I L606 a n d R 6 3 6 t L------------A
6
[ C,heck f o r T70l pin@)
.
Normal 1
t
Check for the voltage cathode 1 of 0712 (Approx: ll5V) ' Abnormal
1 Check for the CRT , heater vol toge I Abnormal , Norma I /
1 C h e c k D712 and 0710 I Abnorma I t - C h e c k T70l , R7ll R713 a n d C706 c Norma I
I
w--e 1a - - Check I I 0631 L- - B - m - - -
I I J * . Check for the Bias circuit of picture tube 4
--e-e L m--y I Check 0712 andl I D7lO I L --------a
Normal
Check for the screen voltage (Approx: 55OV) A ,N I Abnormal o r
,
Check for the Q85l COI lector voltage (Approx: IOOV) 1 a l 1
1 --------A Check IC7Ol
m
!Check IC701 1 L-------d r-e-- I - - - - - - - -I - - - - 1 I C h e c k C861 a n d 1 L SG854 I - - - - - - - - - A i Check IC8Ol,Q851,~ I 0852,0853,D802,l lLD803, and D804J - - - - - - - - . 1 1 C h e c k 0501 und Q502 .
7 LT-'
Abnorma I Normal r - - i- -1 ; Q50l 1 I- - Q502 - a1 - - -
I
----am- t -e-e-)
i Check 0851, Q852, i Q855, 0 8 5 4 , I Q853, a n d 0856
L ---------- A
1
7
.
1
Checked Circuits STF Amplifier Circuit Sound Detector Circuit Audio Output Circu 1 t
NO SOUND
Check for the pin@of TC30l (l2V)
Norma I
,
t When the sound control is set at MAX, does noise increase 3 I
I t
1 C h e c k L703, 0714, t 1 C733) C735) c 7 3 4 , f I and R730 I -L - - - - - - - a - - - J
I 1 No, or very small 1
I
f.----- _I-a----,
1 C h e c k C306, C307, f L301, C3lO a n d I f CF3OI i C h e c k C314,C315, j I C317, R3lO,IC202 , I a n d iC3Ot I L -----------A
Checked Circuits 0 Vertical Output Circuit
1 NO VERTICAL SCANNING 1
W aveform at Collector o f Q503 i s n o r m a l ?
Abnormo I _ ..
, Check 0501, Q502 and bias control circuit.
.. - _ r - - - - - - - - .-
l l l l
Checked Circuits P-IF Circuit AGC Circuit Tuner Circuit tB Supply Circuit
IN0 PICTURE, NO SOUND 1
yet the reception is
and yet only the sound changes remarkably.
Check for tuner BU, BH, BL and B (about IZV) I Norma I I I Abnormal
b %~?~~~~~~~~~ the voltage at pln@of IC202 IS l2V
I Check for IC201, f l Band Selector Circuit. I L-,------,--,,A
i-' 7
Normal Abnormal 1 Check IC201,l ; T201, R233,; l L2ll,L2lO, l I a n d CF202 I I- - - - - e - J
t
When band switch is changed, does VT change?
,
Check tuner, AGC and bias control circuits
t Normal
- - J- - - bheck CF2Ol i
c--e-- -----t
l
L---,-----,,dI
Che R 2 , R217, I1 R218 c k and 2 0C235 I1
- - - r I Check tuner, . . L2!rE!!t-~~--
- Checked Circuits - 0 CHROMA Circuit l VIDEO Circuit
r NO COLOUR 1 I
0
W aveform at pin 5 o f IC801 i s normal ?
Yes I
I
W aveform at emi tier (TP207) o f Q401 i s normal ? Yes
No
Each termina I voltage of tuner No is nomal ? (+B,BL,BH, BU) Yes
Check XC20 I and band selector circuit.
I
Yes
Check Tuner and control circuits.
10
CHASSIS LAYOUT
CONTROL UNIT DUNTK4726WE
S?OOl POWER
SWITCH
POWER SWITCH UNIT DUNTK4727WE
SP301 SPEAKER
17
CRT SOCKET UNIT DUNTK4544WE I ! j REMOTE CONTROL UNIT DUNTK4728WE
_-
C
Xl?901 Itsol -n CF601 0
Ll
TBOI cl L (IT) Q603
U
u
LeoI IK)
0801
l 1
0
TP205 TP203 0 R224 RF AGC 0
E202
u
0402 0401 0
l
F
0
TP202 0
======I
0501 II ' R826 a
0503
R629 R508
CF201 0203 rl C&O2 TP207 0 TP204 l 0202 00 0201 IRG) ICJOI @iI R520 V-LINE 1 R42la SUB BRIGHT 0 SCR601
0
0
0 R630 C728 u R525 V-SIZE I
a
I so2 V-SENT 0 (HI
LJ
IC201 TUNER
0 CL41
El rl
CS!zl
0604
DUNTK4543WE
1 I 2 I 3 I 4 I s I 6
11
RB62
R-BIAS I RB57-B ._ B-DRIVE
-
._.
<
RB63 G -BIAS
.*
0853 mm51 -- 0854 .-.LK) TPBSI a.
I
(TB)
1
/I I
(TA)
ICI02
(RG) 0105. 0101
n
u
01007
LJ
r-l TA) ICI03 a tAB) ~ ICI01
ICI-I SlOO5 cl
2CH S1006
l
0
a0102
l-l
u (Ml
Cl01
51008 4CH 0 cl SIOI I 7CH 0 cl
SlOO9 5CH 0 s1012 8CH SIOOI 0 cl SlOO3
0 q q
3CH s1007
SIOIO 6CH 0 SlOl3 9CH 0 cl
0 cl q
3i (l-B)
0 0104
-`:",`, q q q q TU"E q
SlOO4 SlOO2 (-) (+I (-) (+) R400l SlOl5 /------p L 1 PICTURE COLOR I f BRIGHT CONT
L7001
F700 I T2A AAI 0
R7001 `7 AA2 0 /
Al 0
A3 0
R300l I
s-VOL
DUNTK4726WE
1
I
7
I
8
1
9
I
10
I
11
I
12
I
12
PRINTED WIRING BOARD ASSEMBLIES
(All the PWBs h ere are shown an viewed from their wiring sides.}
g a ii & yi =P u D-m%
N ec: Y
/ `$`W : "Z u;;:, g< _~ e%.._ 9738 1711 pF-& -fp-. -*r=f + ,.~ I / i . )
S`
c ra
/
-t 070. x2--? I 3` SC
'
zi c i I :
LTB _I
R 19 xi_, B .I;=; p' &I 1 5 y!;;:y: J-4 *e 0711-. 4r---: ik ----- f:. i733 t9
Mother Unit 1 I
t7.m . + A_ 65
l l ih t735.. , --.-..-
C73`
2
I
3 13
J
4
I
5
I
6
I
I
9 E&g e SW 5 B
16
- ,,",a ". 8 9 8El- I 2 +~(-J0'oo7 Lt .. .) .` :a; ,s pk 5 i 0 5 1. =Y - Cl004 __ =u s3C" 1007 cl
9cH SIC13 "0: 0 P p lOCH 51014
CRT Socket Unit
cl
f!r-1st El
57001
Power Switch Unit
Controi Unit
Channel Select Unit
BLOCK DIAGRAI
DUNTK4543WE (OPWBF4543CE) s
TO DUNTK 4547WE (RG) RG)
d
BAND-SELECTOR ICZOI IX0260CE I AFT.-DRIVE 0201 2SClBl5tGR) AFT-SWITCH 0202 2SK304
1
TUNER 1 VTUMF4EA-702/
-
-
-
I t !I
&--Qgyy-~1 FILC0020CE 1 ) INVERTER 1
SAW-FILTER
FILCOO94CE
RCILZO55lCE F
1 I
VIDEO DET COIL T201 CILDOI IBCE SIF - FILTER CF301 FILC0007CE I
R224 RF-AGC
r
t
,
I +
LIMITER
PIF.
AMP
-
il
115v AUDIO - ATT IC202 IX0388CE
SPEAKER
r SOUND OUTPUT IC301 IX0365CE e ' RECTIFIER D714 DX0220CE
AC240V 5oHz *
1
I RECnFIER D701- 0704 DX0240CE
t CHOPPER-TRANS T7Ol TRNZ0235CE
RECTIFIER D710 DX0246CE
1
I
2
I
3
1
4
I
5
I
6
I
15
ZK DIAGRAM
/ TO DUNTK4726WE (IT)
t
DUNTK4544WE (OPWBF4544CE)
i
T
-
(IT)
1
I
H.V 9, R-OUTPUT 0854 2SC3417 t R-DRIVE 08.51 f I ' t , I I I I ' f I 1 I I I I I ! ;
ZiMP. I::o:,.
0652 2SA1015(Y) SEP. NTSC/ PAL SWITCH
I
1O(O) ]
L -I
CRT V801
41
b
4.43MHz osc.
P
l--fKl-I
t--
Y--i-
J
r
`-
G-OUTPUT 0855 2SC3417
H DELAY UNIT L801 9CILZ0551CE AUTO MATIC COLOUR NOISE _ /---
t G-DRIVE 0852 2SCl815tGR) I I 2nd CHROMA AMP. I g+l I
1
-
-t-
R857 1 R863 G-DRIVE G-BIAS
la--J&J
I 2nd VIDEO AMR
-.
t
/L--,1
I-
L
--3
4
L
TO DUNTK4543WE Di)(F.B.T.)(L4)
I
-1
I I
I
I
I I
J
-
L
r-l
32tH OSC. CF6Ol FILAOO07CE
VERT.-OUTPUT VERT DRIVE 0503 2SCl514 -III: , Q501 2SC2168tY) 0502 2SA958iY) -
RS25 V-SIZE R520 V-LINE. s502 V-SENT.
H-DRIVE 0601
DXOIOSTA T60 I TRNZ0193CE VERT. 1b.Y) & 1-
?J REGULATOR 0609 2SD313
(F) HOR. OUTPUT HOR. :1x
6
I
7
I
8
I
9
1
10
I
11
I
12
J
16
TO DUN'
A
DUNTK4726WE
Ich FT t-1 TUN (+I TUN t-1
r
AFT T 0 V r 0 N U
2ch
QIOL 2sc VTc
5ch +-I 6ch
l
(TA)
1
L KEY
ICI( 1x0
MICRO
7ch
8ch KEY 9ch
n
I
(TB) r
1
(TB)
r-
loch
F
ninn7
"I"",
e--w--i- 1 [ L.; A 0 L0 I
I
I
I
R4001
I0 f-II 1
R3nnl
CO/NT
f
(IT)
DVAICAPC rfivfu7bc
;
I I
+
I
v TO
DUNTK4543WE
11(1 l
FI t
!!) l
BdIGHT
f
,
P--TONE iLB-,_-+i
I
v
ADG COIL
+
:
.
-_
H
_
+"s-
.--
TO DyNTK4543WE __-
-
_:- . .*_
:
-.
.
1
--
I
2
I
3
I
4
I
5
I
6
1
17
_ _;:NTK4543WE -1
DUNTK4728WE.
AFT VT _. I (2105 @SClSlS (GWI S - MUTE
1
VT-AMP
1
I
1
KEY
1
IClOl _
RESET
J
TO DUNTK4543WE
IX0605CE MICRO PROCESSOR
KEY
LINE - FILTER
A
AC240V 50Hz
__ _
I.
(A)
(A81
TO DUNTK4543WE
DUNTK4727WE
=
I
7
I
8
I
9
I
10
I
11
1
12
-1 __ z<_--
18
B
C
D
DLNTK4544WE lOPWBF4544CEZZl
7 c321 + `Urn 116W / P I I
IC3D I lX0365CE r
-OO(L2~K&3
EdUW-AMP1
E
,WMTES VxIIXEi
(K) 1 r
:Y," I 3mA Ifocvm IKE +-I". , ix1 I1 iI If -.-A ItIII11 ? if ~VeDl a: * : ;""""* It 1;: ; 111 i ::: :--I ,a, ~
.F
0
_______-----___------------------------~--~XTD' IXOTJIQ tPDWEi?-RE6tUTORJ itCT39 I%02
19
SERVICE PRECAUTION:
The area enclosed by this line ( - - - ) is directly When servicing the connected with AC Mains Voltage. area, connect an isolating transformer between TV receiver and AC line to eliminate hazard of electric shock.
DLNTK4543WE
R4411)
10 / 7 c73a - C716 0015 & h Kzoo.?.cE2 I,% IZO 057cE c,,s 4 RIVI F870P E s4 I :q &n7 rCOI0 &4, ~:~ 1 I, / *- OEZ I 4-l ! rl
-----_-_----
_-___
-----J
=WfER-ftE!3JL4TOFIP~
-cE> 1-1
I
7
I
8
I
9
I
10
1
11
I
12
I
20
cPr,mn
NOlO
Th, WC"ll dloptwn I* orlglm\ one tbeMIClorC mere moy be 0 n,gtl, Lltermce from your. All !he "Olh?~sr I" coch ~om,we meo,u,ed wrh d,$arol ,,,,,I, ,,,c,o, All mere `lpuror repr**on, WE "Olt~pe Iaveh meoued UPon receFdan OI COloUr sqnolr Ftsmrtor 1 I) Restrl~"ce Y- we dm.n n oh,, : K = ,000 MI ,.OOO.OOD 121 All IO,I,,W, Of0 I/6 t"OlI. UMs, otllarrne "Ned 13) A U re,tstw, ln4e.l orher*aa n0t.d. or* CWQon. @--Oxat Fen @--SIWY @--Uetot Coornp : g--p @--csmenr mma P="LIF=,O-`~ 11) corJocmnce "DMS ore d~~,orn n UF=IO-`Fdwrwt,e (21 All cwoc~!ws ore 5OV. uh,s otbrms noted (31 A H COPOC~~M OTC CWML. ,,a,, D~WW~~ ~T)IW WLl--Uykv LPFI-- Polypro F,m (TA)--- T~nloh,m aode Doat are s h o r n n ~01,s nmne 0th~ w o e OTC dworn n COlhoda cot4"r tBKb--BUXk CY')- - 1~101 ,WB--Wh,* CBLI - -Blue tG,--G,**" (BR) --B,orn lR1 - - R e d IOR)--Dronpe F
(BLACK)
e-g
(BLIIEI
e
2 13 1. :z is? * ::I 80
co5 I I
0 -_--. .
z lib RB.3 Rl.8 :o", :I%, m,..? RI.0 :z-al I :,%#, I-i'
I: 1 E .301
R122 IS<
"`w'
,
C,,,. IWP. 7
L i
I-
rI
,pI v @ sRI3euemR, cMK13bdl(RI19
: ~D~05~odiDi07kDIW
CXoo..T. x4 ICIOI
I
Ol 5 b
&
2SC1Bl%GRl
1130 IoN
f
I 0
tV303 `UN
`.l
:r
`4
y-$ 3 111 K-y , I, I I8) a0 ;= \ jiDm&r ! /;";q-@+ nL;
7! r I/1 I I I 1
I 1
r
"'
RIO5
/
j 11 * / j t
I I ,st~)y
IXO605CE GZH-SELECTOR)
351007 cH 5,-006 5mos SW 51010 -017 5,`CM -015 12 wl. St`0O%
D1007WCE PXO! I I B c
j 4 *y-Ii;
& / ! I IDI-. 0 1 02 0 fitfI I x-l a -GJ-pJ 0 &)I // "I 4I ^ a ^1cm6X6 ' OI1SSI~-IDsiw W 1(10 .? $1
& BI F I t 6 I CI RmcM - 0 6 R1003 E I Dc I E 7 R1Ms r I, Rmcm P
L
`R r----i ----
..
j-y-++/Gj j 1 1 ~I+q 1 (
I. * g9-
II RID6 D i.l I ; / +-+-y-F*; Qm
'
I L
iI !\ 0 coo 0 -0 m h 7 u ) 1 `,yy 1 j Ezi
-I I / ill I
lKz z ::!? ' T- q
ICI02 IXO439CE IMEMDRY~
A
Il I/
:9 9lh' -_-__d Ft,o , I& a:`oi. /1r707-~~~~~Zi~l //
wy-i>,
M,,
:
1-j
i,i'rpy]/ / ff-y-q&Yh j
j2*p! I II J j 1 / dllE~ml~l~ /
-YG%F3+1-1
III ..
I l4-wi IA' ' I WI
,2:&&i A/ / AT+
-3-l
/ "' ?i&b43BS-,
p::,
EXooslGE I
I
' III
i I DWTK472BWE tOFWSF472BCEZZl No645cEI 3T~mEDl
I I. ~ /
_I
A _-------_
-1 WIT
i
-1
CICImf all
Izv
I
I : li
iI\ &r ji UT,3V .Y IiI/
lNO304cT)
I
DWTK4727WE lDPWBF4727CEZf~
21
DESCRIPTION OF SCHEMATIC DIAGRAM AND WAVEFORMS
) ARE IMPORTANT FOR PARTS MARKED WITH *A - ( MAINTAINING THE SAFEN OF THE SET. BE SURE TO REPLACE THESE PARTS WITH SPECIFIED ONES FOR MAINTAINING THE SAFETY AND PERFORMANCE OF THE SET. NOTE: RESISTOR 11) Resistance values are shown in ohms: K= 1,000 M= I,i?OO,OOO (21 All resistores are l/8 watt, unless otherwise noted. (31 All resistores are Carbon, unless other wise noted. @ . . . . . . Solid 8 . . . . . . Cement @ . . . . . . Oxide Film @ . . . . . . Special @ . . . . . . Metal Coating CAPACITOR (1) Capacitance values are shown in u= 10e6F otherwise noted p=uuF= 10-12F (21 All capacitors are 5OV, unless otherwise noted. (31 All capacitore are Ceramic, unless otherwise noted. /MU . . . . . . Mylar IPf) . . . . . . . Polypro Film (TA) . . . . . . . Tantalum DIODE Diode are, shown p a r t s name other Diode are shown cathode colour. (BL) . . . . . . BLUE (BR) . . . . . . BUCK (Yl . . . . . . YELLOW (WI . . . . . . WHITE (G) . . . . . . GREEN (ORI . . . . . . ORANGE
CAUTION: This circuit diagram is original one, therefore there may be a slight difference from yours. All the voltages in each point are measured wrth digital multi meter. All these figures represent the voltage levels measured upon reception of colour signals.
Waveform Measurement Conditions 1. Upon receiving EBU colour bar signal of 70 dS in field intensity. 2. m indicates wave form check points (See chart, waveforms and measured from point indicated to chassis ground).
@ 48OVPp (1OOV 10usec)
@ 8.OVp-p (2V 1 Ousec)
@ 1.4vp-p (0.2V 20rrsec)
@ 2.ovp-p 10.2V 20usec)
@ 0.84Vp-p (0.1 V 20ctsec)
@ 0.7vp-p (0.1 v 2Owx)
@ l.GVp-p (0.2V 20psec)
@ B.OVp-p (0.W 20wec)
@
11 4.ovp-p (0.5V 2OjSec) /
i0
9.2vpp (2V 20psec)
@
12ovp-p (2OV 2Opsec)
@
114vp-p (2OV 20psec)
@
112vp-p (2OV 20ysec)
@
4.8Vp-p (2V 20psec)
@!
1.14vpp (0.2V 20ysec)
@
O.GVp-p (0.1 V 1 Ol.rsec)
@ 96Vp-p (2OV 5msec)
@
toovp-p (2OV 5msec)
@
152vp-p (2OV 1 Opsec)
7
22
TUNER
A VTUMF4EA-7021
F I t
1 c
R
I {\ :!
1 5 6
I
SOLID STATE DEVICE BASE DIAGRAM
VS2SD313F//lE VS2SC2168Y12E VS2SC2271-EIA VS2SC1514- /ZE VS2SK304CO/- I VHSSF3H42// - I
I
, LEYITTER L--`LLECTW
VS2SClBISGW-I VS2SCl906NlE VSZSA950~
VSZSDl556//2E
RH - PXOI49CEZZ
RH-IX0439CEZZ RI-I-IX0412CEZZ RH -1X0260CEZZ
8 ciI 7h iY-Pt3745
ICOLLECTOR -EMITTER
-GATE
-.. _ - _RH- IX0368CEZZ
30
-
-
RMPTE0043CEZZ
RMPTCOl50CEZZ
nnnnnnnnnn
16
-
%y+ L i : _ L 23.5
RH- IXO767CEZZ :
RH- IX0731CEZZ RH - !XC703CEZZ
c ( c L L Rr-IX0249CEZZ CIITHOGE ANODE 4 z 3 . 5 G I G 9 IO 0 ,z 0 4,
23
Ref. No.
Part No.
PARTS LIST
PARTS REPLACEMENT
Replacement parts which have these special safety characteristics identified in this manual; electrical components having such features are identified by A in the Replacement Parts Lists. The use of a substitute replacement part which doeqnot have the same safety characteristics as the factory recommended replacement parts shown in this service manual may create shock, fire or other hazards.
Description
2SA950 2SC216B(Y) 2SA95B(Y) 2SC1514 2SC2271 2SDI556 2SD313(F) SF3H42
Code
AD AF AC
VS2SA950dl I - 1 VS2SC2 16BY/ 2 E VS2SA95BYl / 1 E VS2SCI 514- / 2 E VS2SC2271- ElA VS2SDI 556/ / 2 E 0604 VS2SD313Fi / 1 E BSCR601 VHSSF3H42/ / - 1
Q402 0501 0502 0503 0601 Q602
AE
AC AP AE AG
DIODES
0201, 401, 402. 404 I 406, 503, 504, 506 I VHDlSSllSII- 1 AB
"HOW TO ORDER REPLACEMENT PARTS"
To have your order filled promptly and correctly, please furnish the following informations. 1. MODEL NUMBER 3. PART NO. 2. REF. NO. 4. DESCRIPTION
508,
602, 606, 611 I 613, 651, 652, 705 D202 D502, 601, 607, A 608, 706, 714 D603, 604 80605 D609 AD610 80701 NOTE: THE PARTS HERE SHOWN ARE SUPPLIED AS AN ASSEMBLY BUT NOT IN DEPENDENTLY. b VTUMF4EA7021 VHFUHF Tuner BF I A 704 . 0707 0710 D712 D802 I 804
R H - EX0056GEZZ Zener Diode R H - DX0220CEZZ
AB AB
R H - EXOI 39GEZZ Zener Diode RHRHRHRHEX0034CEZZ Zener Diode DX0105TAZZ EXOI 69GEZZ Zener Diode DX0240CEZZ
AA AC AD AA AB
INTEGRATED CIRCUITS
IC201 IC202 IC301 ,IC701 lcaol RH- i X0260CEZZ RH- i X03aaCEZZ RH- i X0365CEZZ RH- i X0731CEZZ RH- i X0787CEZZ AF AQ AK AT AT
RHRHRHRH-
EX0060GEZZ Zener Diode DX0246CEZZ EXOl 52CEZZ Zener D i o d e EX0072GEZZ Zener Diode
.
AA AD AE AA
PACKAGED CIRCUIT
XR801 RCRSB003 1 CEZZ Crystal AK
TRANSISTORS
0201, 801 Q202 Q203 0401, > 603, 652 vs2scla15GW- 1 2SClB15IGR) A0 AC AC AC L204, 206 L205, 609 L209 L210 L211
COILS
V P - D F lR2MOOOO l.2pH V P - DF6BOKOOOO 6BpH AB A% AB AB AB
VS2SK304CDi - 1 2SK 304 VS2SC1906ii IE 2SC 1906 VS2SAlOl 5Yi 1 E 2SAl015(Y)
V P - CF6BOKOOOO 6BpH V P - X F 120KOOOO 12pH V P - XF4R7KOOOO 4.7pH
24
t?ef.No.
L301 L302, 303 L403 L404 1L602 1L603, I 608 L604 L605 L606 L607 L610 L701 L702 L703 L801 L802
Part No.
V P - X F 180KOOOO 18pH V P - C F 2R2MOOOO 2.2pH
Description
Code Ref. No.
C602 C604 C615 AB C616 C619 AH AB C620, 629, AB 634, AE 725, AD 733 C622, AG AB 727 AB AC625, AB 626 AF C627 AB C630 AE C631 AB C632 C633 AC701, -A 702, 730, 739 AB AB
Part No.
Description
Code
VP - DF R 39MOOOO 0.39rH RCi LZ0488CEZZ V i d e o D e l a y VP- L K l~OOKOOOO 10pH VP- MK 1 OOKOOOO 1OpH RCi LP0097CEZZ RCi LP0070CEZZ RCi LZ0422CEZZ V P - C F 390KOOOO 3gpH V P - XF2R7MOOOO 2.7~H V P - CFR33MOOOO 0.33pH RCi LP0069TAZZ 47pH V P - C F 3R3KOOOO 3.3/~H RCi LZ0551CEZZ IH-DL U n i t V P - D F 102KOOOO ImH
VCCSPA2HL470K 47p 500V Ceramic AA VCEAGAlCW337M 3 3 0 16V Electrolytic AC Electrolytic AC R C - EZOl 11CEZZ 1 0 0 0 6.3V VCEAGAlAWl07M 1 0 0 Electrolytic AB 1ov VCKYPAZHB 1 0 1 K 100~ 500V Ceramic AA VCKYPA2HB 102K 0 . 0 0 1 5 0 0 V C e r a m i c AA
R C - KZOOI GCEZZ 0 . 0 1
Ceramic
AC AE AD AC AA AE AC AC
CERAMIC FILTERS
CF201 CF202 CF301 CF302 CF601' RF i L COO94CEZZ SAW Filter RFi LC0020CEZZ 5.5MHz T r a p R F I LC0007CEZZ SIF Filter RFi LC0097CEZZ S I F D e t e c t o r RFi LA0007CEZZ 3 2 f H O s c . AK AE
VCFPPD3CA682J 0 . 0 0 6 8 1.6kV M e t a l i z e d Polyester VCEAAH2EW226M 2 2 250V Electrolytic VCEAGAl EW337M 3 3 0 25V Electrolytic VCKYPA2HB271K 270~ 500V Ceramic VCFPPD2DB434J 0 . 4 3 200V Metalized Polyester VCFYSB2GB393K 0 . 0 3 9 4 0 0 V M y l a r R C - KZ0029CEZZ 0 . 0 1 Ceramic
AE AI= AE
AC704 AC706, A 707 c709
c710 c711 C716 C718, 726 C720 C724 C728 c729 C732 c734 C738 C811
R C - EZO169CEZZ RC- KZ007 1 CEZZ
330 4oov 0.0022
Electrolytic AT Ceramic AC AC AA AC AB AD
TRANSFORMERS
T201 T202 T601 hT602 ,T701 T801 RCi LDOl 18CEZZ P - D E T RCi LD0099CEZZ A F T RTRNZOI 93CEZZ Horizontal Drive R T R N F 1625CEZZ Flyback T r a n s . RTRNZ0235CEZZ Regulator Trans. RCi LVOl 3 9 C E Z Z B a n d P a s s T r a n s . AD AE AG BH AT AE
V C E A G A I HW107M 1 0 0 5ov Electrolytic VCKYPA2HB272K 0 . 0 0 2 7 5 0 0 V C e r a m i c V C E A G A I EW227M 2 2 0 Electrolytic 25V VCEAAA2EW475M 4 . 7 250V Electrolytic R C - KZ0057CEZZ 0 . 0 0 1 5 2 k V Ceramic
CONTROLS
R224 R421 R520 R525 R634 R817, 826 R V R - B51 3 7 C E Z Z RVR- B 5 139CEZZ R V R - B51 3 4 C E Z Z R V R - 851 3 1 C E Z Z R V R - B5141CEZZ R V R - B51 3 8 C E Z Z 5k(B) 20k(B) lk(B) 200k(B) 50k(B) IOk RF-AGC Sub-Brightness Vertical-Line Vertical-Size Horizontal-Center Sub Colour Carrier WavePhase AB AB AD AD AD AB
R C - KZ0035CEZZ 220~ 2kV Ceramic AB VCKYPA2HB222K 0 . 0 0 2 2 5 0 0 V C e r a m i c AA R C - EZOO69CEZZ 2 2 0 Electrolytrc A G 16OV R C - EZ0107CEZZ 1 0 16OV Electrolyttc A F VCKYPH3DB561K 560~ Ceramic 2kV AC Electrolytic AC R C - EZOl 12CEZZ 3 3 0 25V R C - KZ0024CEZZ 0 . 0 0 1 2 k V Ceramic AC VCEAGAlCW227M 2 2 0 Electrolytic AC 16V
RESISTORS
R416 R425 V R S - PV3ABl02J l k 1w V R S - VV3AB681 J 6 8 0 1W R R - XZ0091CEZZ 1 8 1/2w R R - WZ0090CEZZ 1 5 0 low V R S - VV3DB392J 3.9k 2W R R - WZ0065CEZZ 3.9k 5 W Oxide Film AA Oxide Film AA Fuse Resistor Cement Oxide Film Cement AB AC AA AD
AR506
R508 R511 R529, 640 R530 R605 R619
CAPACITORS
c222 c303 c317, 617 C318 c319 C321 c409 c503 c507 C512 c513 c515 C516 VCSATAlVEl05K 1 R C - EZOI 3 0 C E Z Z 3 3 0 V C E A G A I CWl07M 1 0 0 35v 16V 16V Tantalum AD Electrolytic AC Electrolytic AB
VCEAGAl EWI 0 7 M 1 0 0 25V E l e c t r o l y t i c A D AR620 25V R C - EZ0077CEZZ 4 7 0 E l e c t r o l y t i c A D AR628, A 730 VCEAGAlCW477M 4 7 0 16V Electrolytic AC R629, VCFYSB2AB224K 0 . 2 2 IOOV M y l a r AD 630, VCCSPA2HL470K 47p 500V Ceramic AA 713 -VCEAGA2CW336M 3 3 160V Electrolytic AD R631 VCFYSB2EB104K 0 . 1 250V Mylar AC VCSATA 1 VE 684K 0.68 35V Tantalum AC AH A R 6 3 6 VCEAGH2CW227M 2 2 0 16OV Electrolytic VCFYSB2EB223K 0 . 0 2 2 2 5 0 V AC Mylar R649
V R S - VV3DB562J 5.6k 2W Oxide F i l m A A V R S - VV3LB472J 4.7k 3 W Oxide F i l m A B V R S - VV3DB 103J 10k 2W Oxtde F i l m A A V R D - RA2BE 103J AA IOk 1/8W C a r b o n R R - XZ0090CEZZ 1 1/2w Fuse AB Resistor R R - WZ0082CEZZ 1 2 Cement AD 5w
V R N - VV3AB2R7J 2 . 7 1W R R - XZ0092CEZZ 4 7 0 V R S - VV3DB222J 2.2k ll2W 2W
Metal AA Coating Fuse AB Resistor Oxide F i l m A A
25
ef.No. AR 703. A 704
R 710 R 711
Part No.
V R C - UA2HG825K 8.2M VRS- SV2HCl OOJ R R - WZ0099CEZZ 100 1
Description
1/2W S o l i d 112w 5w Oxide Film Cement
Code Ref. No.
AA AA AC858 AD AC861 C864,
Part No. CAPACITORS
Description
Code
250 VCEAAH2EW226M 2 2 Electrolytrc A D Ceramic R C - KZOO23CEZZ 0 . 0 0 4 7 AD VCKYPA2HB 102K 0 . 0 0 1 5 0 0 V Ceramrc AA
865
S W I T C H E S
501 502 QSW- BOO1 5CEZZ Service OS W - B 0 0 2 0 C E Z Z Vertical Center AC AE R865, 866, 867
RESISTORS
V R S - VV3DB123J 12k 2W Oxide Film * AA
MISCELLANEOUS MISCELLANEOUS
B601, 602, 603, 702 8701 B703, 704, 705, 706 RBL N- 001 OCEZZ Ferrite Bead AC ASG851, A 852, RBLN- 0030CEZZ Ferrite Bead RBL N- 0041 CEZZ Ferrite Bead AC A AB A QSoCV0814CEZZ CRTSocket QSPGC0022CEZZ S p a r k G a p AG AB
853,
8 5 5 QSPGC0020CEZZ Spark Gap AC
ASG854
TRANSISTORS
1851, 852, 853 !854, 855, 856 VS2SC1815GW1 2SC1815(GR) AB
01001 I 006 D1007
VHDISSI 19, )I - 1
lSS119
AB
R H - PXOl 64CEZZ Channel LED
AN
VS2SC3417; IlE
2SC3417
AC
CONTROLS
AR3001 R V R - Q4032CEZZ R V R - G4013CEZZ AF AG
AR4001 DIODES
1852, 853, 855 VHDlSSllS!!-1 AB
MISCELLANEOUS
RR MCUO 1 6 OC E Z Z QSW- K0030CEZZ Remote Control Receiver AR AB
AS1001 COILS
851 852 I 854 VP- CF 68 1 KOOOO 680rH V P - X F 1 O O K O O O O 10pH AB I 1014 AS101 5
Q S W - BOO1 88CEZ Band Select
AD
SWITCH CONTROLS AS7001
AC AC Q S W - P0370CEZZ Power Switch AK
857-A/ R V R - B5083CEZZ 500k(B)x2 G r e e n D r i v e / -B Blue Dnve 862 R V R - B4567CEZZ 5k(B) Red Bias 863, Green Bias 864 Blue Bias
INTEGRATED CIRCUITS
I IClOl ICI02 R H - II X0605CEZZ R H - i X0439CEZZ AS AQ
26
Ref .No.
IC103 IC104
Part No.
Description
I
;:1::::::`:,;~
TRANSISTORS
F
Code Ref. No.
AP AE AC AB AB AB AB AA
Part No.
Description
Code
DIODES
DlOl, 102 D105 I 108 D104 VHDlSSllSII- 1 R H - EX0044TAZZ RD8.2
R H - EX0051GEZZ ZenerDiode
C C AB A 5 1 6 6 C E S 0 Front Cabinet Ass'y Not Available Front Cabinet GLEGP9007CEZZ L e g C WAK P 1 1 3 6 C E 3 7 Front Frame Ass'y Not Avairable Front Frame GDoRF 1572CESA D o o r H B D G B 1058AF SA Badge "SHARP" H B D G D 3 0 1 GCESA Badge "LINYTRON" Hi ND M 2 4 8 3 C E S A Indication Metal Hi NDM2485CESA Decoration Metal Hi NDP2379CESA Indication LED HPNLCl 563CESA Indication Panel HPNLCOl GOCESA Punching Plate CCABBl 650WEVl BackCabinetAss'y Not Available Back Cabinet J B T N - 1321CESC B u t t o n , P o w e r J BTN- 1354CESA Button, Channel J K N B P 1099CESA Knob
AC
BB AL AD AE AD AF AD AW AR AC AE AC
PACKAGED CIRCUITS
R MP T P 0 0 2 8 C E Z Z Positive Coefficient
LlOl L102 L104, 105 L106 ,L7001
V P - MK560KOOOO 56pH V P - X F 1 R O M 0 0 0 0 1pH V P - X F 5R6KOOOO 5.6pH V P - X F 120KOOOO 12/~H R C i L F 0 0 9 0 C E Z Z Line Filter
AB AB AB AB AL
CAPACITORS
Cl09 LC7001 c7003 AB AG AD
RESISTOR
iR7001 R R - WZ0096CEZZ 6.8 low Cement AE
MISCELLANEOUS
,F7001 Q F S - C2022TAZZ F u s e , T2A QF S H D 1 0 0 2 C E Z Z Fuse Holder (2 Used) QACCL 5001CEZZ AC Cord AE AA AP
SP301
AP
27
SHARP
T5652-S Printed in Japan MW.KY