If you need further information ( IC, Circuit descriptions or troubleshooting . . .)
about this model, Please visit our web site.( http://svc.dwe.co.kr)
1) Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such hazards, the high voltage must not be above the specified limit. The nominal value of the high voltage of this receiver is
25.5kv(20”/21”) & 23.5kv(14”)at zero beam current (minimum brightness)
under a 120V/220V AC power source. The high voltage must not, under any
circumstances, exceed 28kv(20”/21”) & 26kv(14”). Each time a receiver
requires servicing, the high voltage should be checked following the HIGH
VOLTAGE CHECK procedure on page 10 of this manual. It is recommended as a parts of the service record. It is important to use an accurate
and reliable high voltage meter.
2) This receiver is equipped with X-RADIATION PROTECTION circuit which
prevents the receiver from producing an excessively high voltage even if the
B+voltage increases abnormally. Each time the receiver is serviced, XRADIATION PROTECTION circuit must be checked to determine that the
circuit is properly functioning, following the X-RADIATION PROTECTION
CIRCUIT CHECK procedure on page 6 of this manual.
3) The only source of X-RAY RADIATION in this TV receiver is the picture tube.
For continued X-RAY RADIATION protection, the replacement tube must be
exactly the same type tube as specified in the parts list.
4) Some parts in this receiver have special safety-related characteristics for XRAY RADIATION protection. For continued safety, parts replacement
should be undertaken only after referring to the PRODUCT SAFETY
NOTICE below.
2. Safety Precaution
WARNING: Service should not be attempted by anyone unfamiliar with the
necessary precaution on this receiver. The following are the necessary precaution to be observed before servicing.
1) Since the chassis of this receiver has hazardous potential to ground whenever the receiver is plugged in (floating chassis), an isolation transformer
must be used during servicing to avoid shock hazard.
2) Always discharge the picture tube anode to the CRT conductive coating the
picture tube. The picture tube is highly evacuated and if broken, glass fragments will be violently expelled. Use shatterproof goggles and keep picture
tube away from the body while handling.
3) When placing chassis in the cabinet, always be certain that all the protective
devices are put back in place, such as; nonmetallic control knobs, insulating covers, shields, isolation resistor-capacitor network, etc.
4) Before returning the set to the customer, always perform an AC leakage current check on the exposed metallic parts of the cabinet, such as antennas,
terminals, screw-heads, metal overlays, control shafts etc. to be sure the set
is safe to operate without danger of electrical shock. Plug the AC line cord
directly into a 120V AC outlet (do not use a line isolation transformer during
this check). Use an AC voltmeter having 5000 ohms per volt or more sensitivi-ty in the following manner.
Connect at 1500 ohm 10 watt resistor, paralleled by a 0.15 mfd. AC type
capacitor, between a known good earth ground (water pipe, conduit etc.)
and the exposed metallic parts, one at a time. Measure the AC voltage
across the combination of 1500 ohm resistor and 0.15 mfd capacitor. Voltage measured must not exceed 0.3 volts RMS. This corresponds to 0.2 millliamp. AC. Any value exceeding the limit constitutes a potential shock
hazard and must be corrected immediately.
AC VOLT METER
0.15uF
Good earth ground
such as d water
pipe, conduit, etc.
1500 OHM
10WATT
Place this probe
on each exposed
metallic part.
3. Product Safety Notice
Many electrical and mechanical parts in this chassis have special safety-related
characteristics. These characteristics are often passed unnoticed by a visual
inspection and the protection afforded by them cannot necessarily be obtained
by using replacement components rated for higher voltage, wattage, etc.
Replacement parts which have these special safety characteristics are identified in this manual and its supplements; electrical components having such features are identified by shading on the schematic diagram and the parts list.
Before replacing any of these components, read the parts list in this manual
carefully. The use of substitute replacement parts which do not have the same
safety characteristics as specified in the parts list may create X-ray radiation or
other hazards.
4. Service Notes
1) When replacing parts or circuit boards, clamp or bend the lead wires to terminals before soldering.
2) When replacing a high wattage resistor (metal oxide film resistor) in the circuit board, keep the resistor min 1/2 inch away form circuit board.
3) Keep wires away from high voltage or high temperature components.
DAEWOO ELECTRONICS CO., LTD.
C.P.OBOX8003 SEOUL, KOREA
Tel : 82-2-360-7798
Fax : 82-2-360-7877
E-mail : G7F00E@dwe.web.co.kr
Printed in Apr. 2000
Alignment Instructions
SVC v0
R BIAS
G BIAS
B BIAS
R DRIVE
G DRIVE
B DRIVE
V. CENTER
V. SIZE
H. CENTER
VCO
VCO FIN
VCO-L
VCO-L FIN
AGC
LED EAST
Pr
3. Enter the service mode
using the follow keys.
R G MENU.
2. SCREEN
1) Receive the Retma pattern and heat run over 15minutes.
2) Adjust the “R, G BIAS, R, G DRIVE” to 0, “B BIAS” to
127, “B DRIVE” to 32.
Adjust the screen volume that the Retma pattern reachs
the cut-off point.
3. WHITE BALANCE
1) Receive the Full white pattern and heat run over
15minutes.
2) Adjust the picture control at the point “X” value of white
balance instrument in 20cd/m
3) Enter the service mode.
4) Adjust “R BIAS, G BIAS” to x=288, y=301.
5) In order to exit the service mode power off the TV set and
power on.
6) Set the TV set to “Normal I” mode(20/21 inch) or set to
“Normal II” mode(14 inch)
7) Enter the service mode.
8) Adjust “R DRIVE, G DRIVE” to x=288, y=301.
9) Repeat above process until the white balance value to
x=288, y=301, X=20, x=288, y=301, X=200
(approximate) in 2) -8).
1. AFT
1) Set a signal Generator with
- RF FREQUENCY = 38.9MHz, 34.2MHz (L’)
- RF OUTPUT LEVEL = 80+/-5dBuV
- System = PAL for 38.9MHz.
SECAM-I for 43.2MHz.
2) Connect the Signal Generator RF Output
(PAL 38.9MHz) to P101 (Tuner IF Output).
There must be no signal input to the tuner.
3) Locate the cusor to “VCO” in Service Mode Menu,
then press the “Vol +” key and wait until the
“Please wait” disappear on the TV screen.
4) Connect the Signal Generator RF Output
(SECAM-L 34.2MHz) to P101 (Tuner IF Output).
5) Locate the cusor to “VCO-L” in Service Mode Menu,
then press the “Vol +” key and wait until the
“Please wait” disappear on the TV screen.
4. FOCUS
1) Apply a RETMA PATTERN signal.
2) Adjust the Focus Volume on FBT to obtain optimal
resolution.
5. AGC
1) Set a pattern Generator with
- RF LEVEL = 60dBuV
- 100% FULL COLOR BAR
2) Connect the Pattern Genetator RF Output to tuner
RF input.
3) Connect the probe of oscilloscope in AGC pin of tuner.
4) Adjust the AGC point to MAX - 1V.
( Simple Method )
1) Receive the pattern.
2) Locate the cusor in “AGC” and adjust using the
“VOL +” or “VOL -” keys.
3) Adjust the point there is no noise in about 60dBuV and no
beat in about 90dBuV.
6. GEOMETRY
6.1 VERTICAL CENTER
1) Set the TV to “NORMAL I” mode.
2) Enter the service mode.
3) Locate the cusor at “V.CENTER” then press “VOL +”
or “VOL -” keys to adjust the center line with the
mechanical center marks of the CRT.
6.2 VERTICAL SIZE
* The VERTICAL CENTER adjustment has to be done in advance.
1) Receive the Retma pattern.
2) Set the TV to “NORMAL I” mode.
3) Enter the service mode.
4) Locate the cursor at “V.SIZE” then press “VOL +”
or “VOL -” keys to adjust the upper part of the picture.
6.3 HORIZONTAL CENTER
1) Apply a RETMA PATTERN signal.
2) Set the TV to “NORMAL I” mode.
3) Enter the service mode.
4) Locate the cursor at “H.CENTER” then press “VOL +”
or “VOL -” keys to adjust the picture centering.
if EEPROM(I702) has been changed;
- Option data has to be change and
- all alignment function has to be readjusted* The initial state of adjustment are as follows;
M491B4854942103BUTTON ABS BK
M5614855621401MARK BRANDABS BK
M6814856812001TIE CABLENYLON66 DA100
SP01A7178301011SCREW TAPPTITE TT2 WAS 3X10 MFZN
R
ZZ200PTFMSJA627 MASK FRONT ASDTP-14C5TF
M2014852069901MASK FRONTHIPS BK
ZZ210PTSPPWA627 SPEAKER ASDTP-14C5TF
P601A4850703S50CONNECTOR
R
SP014858314010SPEAKERSP-5070F01 3W 8 OHM
R
ZZ290PTMPMSA627
C101CEXF1H109V C ELECTRO50V RSS 1MF (5X11) TP
C102CEXF1H479V C ELECTRO50V RSS 4.7MF (5X11) TP
C103CEXF1C222V C ELECTRO
C301CEXF1V471C C ELECTRO
C302CCXB3A471K C CERA1KV B 470PF K (T)
C303CEXF1E102C C ELECTRO
C304CEXF1H220V C ELECTRO50V RSS 22MF (5X11) TP
C305CMXE2A473J C MYLAR100V PU 0.047MF J
C306CEXF1V101C C ELECTRO
C307CMXB1H224J C MYLAR50V EU 0.22MF J (TP)
C313CEXF1H109V C ELECTRO50V RSS 1MF (5X11) TP
C401CMYE2D364J C MYLAR200V PU 0.36MF J
C402CEXF2C109V C ELECTRO160V RSS 1MF (6.3X11) TP
C404CMYH3C692J C MYLAR1.6KV BUP 6900PF J
C406CCXB2H102K C CERA
TRANSMITTER
REMOCON
PCB MAIN MANUAL
AS
R-40A01
L.D.P.E
T0.03X1000X900
YH02503+35098+ULW=200
DTP-14C5TF
16V RSS 2200MF
(13X25) TP
35V RUS 470MF
(10X20) TP
25V RUS 1000MF
(13X20) TP
35V RUS 100MF
(8X11.5) TP
500V B 1000PF K
(TAPPING)
is a recommendable part for stock.
®
is safety component, so it must be used the same component.
LOCPART CODEPART NAMEPART DESCRIPTION
C410CMXM2A104J C MYLAR100V 0.1MF J (TP)
C411CMYN1J105K C MYLAR (MKT)63V 1MF K (7.5MM)
C420CEXF1C470V C ELECTRO16V RSS 47MF (5X11) TP
C421CEXF2E330V C ELECTRO250V RSS 33MF (13X25) TP
C501CEXF1H478V C ELECTRO50V RSS 0.47MF (5X11) TP
C502CEXF1H109V C ELECTRO50V RSS 1MF (5X11) TP
C503CEXF1C470V C ELECTRO16V RSS 47MF (5X11) TP
C504CEXD1H229F C ELECTRO50V RND 2.2MF (5X11) TP
C506CEXD1H229F C ELECTRO50V RND 2.2MF (5X11) TP
C507CEXF1C101V C ELECTRO
16V RSS 100MF
(6.3X11) TP
C511CEXF1C470V C ELECTRO16V RSS 47MF (5X11) TP
C512CEXF1H109V C ELECTRO50V RSS 1MF (5X11) TP
C513~7CEXF1H100V C ELECTRO50V RSS 10MF (5X11) TP
C520CEXF1C470V C ELECTRO16V RSS 47MF (5X11) TP
C522CEXF1C470V C ELECTRO16V RSS 47MF (5X11) TP
C523CEXF1H109V C ELECTRO50V RSS 1MF (5X11) TP
C524CEXF1H109V C ELECTRO50V RSS 1MF (5X11) TP
C601CEXF1C101V C ELECTRO
16V RSS 100MF
(6.3X11) TP
C602CEXF1H108A C ELECTRO50V RSM 0.1MF 4X7
C606CEXF1C101V C ELECTRO
16V RSS 100MF
(6.3X11) TP
C611CEXF1C470V C ELECTRO16V RSS 47MF (5X11) TP
C620CEXF1H100V C ELECTRO50V RSS 10MF (5X11) TP
C702CEXF1H109V C ELECTRO50V RSS 1MF (5X11) TP
C703CEXF1C470V C ELECTRO16V RSS 47MF (5X11) TP
C704CEXF1C102V C ELECTRO
16V RSS 1000MF
(10X20) TP
C706CEXF1H478V C ELECTRO50V RSS 0.47MF (5X11) TP
C801CL1JB3474KC LINE ACROSS
AC250V 0.47MF U/C/
SNDF/SV
C803CCXF3A472Z C CERA1KV F 4700PF Z (T)
C804CCXF3A472Z C CERA1KV F 4700PF Z (T)
C805CEYN2G181P C ELECTRO400V LHS 180MF (25X35)
C807CMYU3C222J C MYLAR1.6KV BCP 2200PF J
C809CH1HFE102M C CERA AC4.0KV 1000PF E DG
C812CH1HFE102M C CERA AC4.0KV 1000PF E DG
C814CCYR3A471K C CERA
C815CEXF2C101V C ELECTRO
1KV R 470PF K 125
DE0705
160V RSS 100MF
(16X25) TP
C816CCXB3A471K C CERA1KV B 470PF K (T)
C818CEXF2C101C C ELECTRO
C819CEXF2A100V C ELECTRO
C820CEXF1E102V C ELECTRO
C822CEXF1C101V C ELECTRO
160V RUS 100MF
(16X25) TP
100V RSS 10MF
(6.3X11) TP
25V RSS 1000MF
(13X20) TP
16V RSS 100MF
(6.3X11) TP
C823CCXB3A471K C CERA1KV B 470PF K (T)
C824CCXB3A471K C CERA1KV B 470PF K (T)
C825CEXF1H220V C ELECTRO50V RSS 22MF (5X11) TP
C826CEXF1H479V C ELECTRO50V RSS 4.7MF (5X11) TP
C827CEXF1C222V C ELECTRO
16V RSS 2200MF
(13X25) TP
LOCPART CODEPART NAMEPART DESCRIPTION
C828CEXF1C101V C ELECTRO
C829CEXF1H100V C ELECTRO50V RSS 10MF (5X11) TP
C830CEXF1C471V C ELECTRO
C841CCXF1H103Z C CERA50V F 0.01MF Z (TAPPING)
C842CCXB3A102K C CERA1KV B 1000PF K (TAPPING)
C850CEXF1C470V C ELECTRO16V RSS 47MF (5X11) TP
C902CMXL2E104K C MYLAR250V MEU 0.1MF K
C905CMXL2E104K C MYLAR250V MEU 0.1MF K
C906CBXB3D102K C CERA SEMI2KV BL(N) 1000PF K (T)
CC102HCFK104ZCA C CHIP CERA50V Y5V 0.1MF Z 2012
CC103HCQK101JCA C CHIP CERA50V CH 100PF J 2012
CC104HCQK101JCA C CHIP CERA50V CH 100PF J 2012
CC105HCQK102JCA C CHIP CERA50V CH 1000PF J 2012
CC108HCFK104ZCA C CHIP CERA50V Y5V 0.1MF Z 2012
CC109HCFK104ZCA C CHIP CERA50V Y5V 0.1MF Z 2012
CC118HCBK104KCA C CHIP CERA50V X7R 0.1MF K 2012
CC412HCQK160JCA C CHIP CERA50V CH 16PF J 2012
CC501HCQK101JCA C CHIP CERA50V CH 100PF J 2012
CC502HCFK103ZCA C CHIP CERA50V Y5V 0.01MF Z 2012
CC504HCFK104ZCA C CHIP CERA50V Y5V 0.1MF Z 2012
CC505HCBK222KCA C CHIP CERA50V X7R 2200PF K 2012
CC506HCQK102JCA C CHIP CERA50V CH 1000PF J 2012
CC508HCBK472KCA C CHIP CERA50V X7R 4700PF K 2012
CC509~12 HCFK104ZCA C CHIP CERA50V Y5V 0.1MF Z 2012
CC515~7 HCFK104ZCA C CHIP CERA50V Y5V 0.1MF Z 2012
CC518HCBK222KCA C CHIP CERA50V X7R 2200PF K 2012
CC519HCFK334ZCA C CHIP CERA50V Y5V 0.33MF Z 2012
CC520HCFK104ZCA C CHIP CERA50V Y5V 0.1MF Z 2012
CC521HCBK472KCA C CHIP CERA50V X7R 4700PF K 2012
CC522~4 HCQK102JCA C CHIP CERA50V CH 1000PF J 2012
CC526HCBK223KCA C CHIP CERA50V X7R 0.022MF K 2012
CC533HCFK104ZCA C CHIP CERA50V Y5V 0.1MF Z 2012
CC534HCQK300JCA C CHIP CERA50V CH 30PF J 2012
CC535HCQK300JCA C CHIP CERA50V CH 30PF J 2012
CC536HCQK300JCA C CHIP CERA50V CH 30PF J 2012
CC602~4 HCQK102JCA C CHIP CERA50V CH 1000PF J 2012
CC605HCQK471JCA C CHIP CERA50V CH 470PF J 2012
CC606HCQK471JCA C CHIP CERA50V CH 470PF J 2012
CC610HCQK181JCA C CHIP CERA50V CH 180PF J 2012
CC612HCFK104ZCA C CHIP CERA50V Y5V 0.1MF Z 2012
CC613HCFK103ZCA C CHIP CERA50V Y5V 0.01MF Z 2012
CC701HCFK104ZCA C CHIP CERA50V Y5V 0.1MF Z 2012
CC702HCQK820JCA C CHIP CERA50V CH 82PF J 2012
CC705HCBK472KCA C CHIP CERA50V X7R 4700PF K 2012
CC707HCQK820JCA C CHIP CERA50V CH 82PF J 2012
CC708HCBK472KCA C CHIP CERA50V X7R 4700PF K 2012
CC709HCQK220JCA C CHIP CERA50V CH 22PF J 2012
CC713HCBK222KCA C CHIP CERA50V X7R 2200PF K 2012
CC722HCQK102JCA C CHIP CERA50V CH 1000PF J 2012
CC723HCQK220JCA C CHIP CERA50V CH 22PF J 2012
CC801HCFK104ZCA C CHIP CERA50V Y5V 0.1MF Z 2012
CC830HCFK104ZCA C CHIP CERA50V Y5V 0.1MF Z 2012
D101D1N4148---DIODE1N4148 (TAPPING)
D103D1SS85TA--DIODE1SS85TA
D105DUZ33B----DIODE ZENERUZ-33B
D106D1N4148---DIODE1N4148 (TAPPING)