Aerial input
Channel coverageOff-air channels, S-cable channels and hyperband
Tuning System
Visual screen size
Channel indicationOn Screen Display
Program Selection
Aux. terminal
Model
AL-SECAM B/G D/K,PAL I/I,SECAM L/L
P
NICAM B/G,I,D/K,L, FM2Carrier B/G, D/K
ower
10page memory FASTEXT(FLOF or top)
Frequency synthesiser tuning system
EURO-SCART1: Audio/Video In and Out,
R/G/B In, slow and fast switching.
EURO-SCART2:Audio/Video In and Out, S-VHS In.
Audio-Video Jack on front of cabinet in common
connection with EURO-SCART2.
Headphone jack(3.5mm)on front of cabinet
DWP-28W2ZZF/DWP-28W2ZLF
70W appro
6W
X
2(at60% mod, 10%THD)
12W 8 ohm X 2
75ohm unbalanced
66cm(wide screen)
100programmes
x.
Remote Control Unit
R-40A13
D AEW OO ELECTR ONICS CO., LTD
http : //svc.dwe .co.kr
Dec. 2000
TABLE OF CONTENTS
MAIN FEATURES................................................................................................................................ 2
TV SET ALIGNMENT....................................................................................................................................... 11
POWER SUPPLY............................................................................................................................................ 33
TV START-UP, TV NORMAL RUN AND STAND-BY MODE OPERATIONS.................................................. 37
1
Service manual WP-795
1 - Main features
1-1 Specifications
TV standard
Sound system
PAL - SECAM B/G D/K, PAL I/I, SECAM L/L’
NICAM B/G, I, D/K, L,
FM 2Carrier B/G, D/K
Power consumption
Sound Output Power
Speaker
Teletext system
Aerial input
Channel coverage
Tuning system
Visual screen size
Channel indication
Program Selection
Aux. terminal
70 W approx.
6Wx 2 (at 60% mod, 10%THD)
12W 8 ohm x2
10 pages memory FASTEXT (FLOF or TOP)
75 ohm unbalanced
Off-air channels, S-cable channels and hyperband
Frequency synthesiser tuning system
66cm (Wide Screen)
On Screen Display
100 programmes
EURO-SCART 1 : Audio / Video In and Out, R/G/B In, Slow and
Fast switching.
EURO-SCART 2 : Audio / Video In and Out, S-VHS In.
Audio-Video Jack on front of cabinet in common connection with
EURO-SCART 2.
Headphone jack (3.5 mm) on front of cabinet
Remote Control Unit
R-40A13
21 Pin EURO-SCART 1 :
Pin Signal Description Matching value
1 Audio Output Right
2 Audio Input Right
3 Audio Output Left
0.5 Vrms, Impedance < 1 kΩ, ( RF 54% Mod )
0.5 Vrms, Impedance > 10 kΩ
0.5 Vrms, Impedance < 1 kΩ, ( RF 54% Mod )
4 Audio Earth
5 Blue Earth
6 Audio Input Left
7 Blue Input
0.5 Vrms, Impedance > 10 kΩ
0.7 Vpp ±0.1V, Impedance 75Ω
8 Slow Switching TV : 0 to 2V, AV 16/9 : 4.5 to 7V, AV Auto : 9.5 to 12V ,
Impedance > 10 kΩ
9 Green Earth
10 N.C.
11 Green Input
0.7 Vpp ± 0.1V, Impedance 75Ω
12 N.C.
13 Red Earth
14 Blanking Earth
15 Red Input
16 Fast Switching
0.7 Vpp ± 0.1V, Impedance 75Ω
0 to 0.4V : Logic “0”, 1 to 3V : Logic “1”, Impedance 75Ω
17 Video Out Earth
18 Video In Earth
19 Video Output
1 Vpp ± 3dB, Impedance 75Ω
- 2 -
Service manual WP-795
20 Video Input
1 Vpp ± 3dB, Impedance 75Ω
21 Common Earth
21 Pin EURO-SCART 2 :
Pin Signal Description Matching value
1 Audio Output Right
2 Audio Input Right
3 Audio Output Left
0.5 Vrms, Impedance < 1 kΩ, ( RF 54% Mod )
0.5 Vrms, Impedance > 10 kΩ
0.5 Vrms, Impedance < 1 kΩ, ( RF 54% Mod )
4 Audio Earth
5 Earth
6 Audio Input Left
The TV set sweeps all the TV bands from beginning of VHF to end of UHF. The TV controlling software
for each program checks if a VPS CNI code is transmitted. If no VPS CNI code is found, the system check
if a CNI code is transmitted in the teletext lines ( Packet 8/30 format 1 ). If such a code ( VPS or teletext )
is found and if this code is in the ATSS list, the program is automatically named.
The programs found are then sorted in 4 groups :
Group I
software. Within this group the sorting order is fixed by the ATSS list.
Group II
Group III
Group IV
same level the one with the lowest frequency) is listed in group I, II or III. The others are listed in group
IV.
Note : If two programs with the same name but a different code are found these two programs are listed in
group I, II or III ( e.g. Regional program SW3 in Germany ).
The sorting order within group II, III, and IV is based on the channel frequency. The program with the
lowest frequency is allocated the first rank in its group, and so forth until the last program of the group
which has the highest frequency.
Program
number
: It contains all the programs from the selected country and named by the TV contro lling
: It contains all the programs with a strong signal strength which are not listed in group I.
: It contains all the programs with a weak signal strength which are not listed in group I.
: If two or more programs with the same code are found, only the strongest ( or if they have the
Group Skip
Program
Group Skip
number
1
2 Group I
...
n
n+1
... Group II
m
m+1
... Group III
p
p+1
... Group IV
q
q+1
... not used
➼
99
0
1
... Group II
m
m+1
... Group III
p
p+1
... Group IV
q
q+1
... not used
99
0
Special case :
Country selection = Others
➼
- 7 -
Service manual WP-795
Special case :
France
If France is selected the TV controlling software sweeps the whole TV bands firstly with France system
selected ( positive video modulation) and secondly with Europe system selected ( negative video
modulation).
Special case :
Switzerland
If Switzerland is selected the TV controlling software sweeps the whole TV bands firstly with Europe
system selected (negative video modulation) and secondly with France system selected ( positive video
modulation).
Special case : GB
Note for satellite receiver users : Before starting ATSS turn On your satellite receiver and tune “ SKY
NEWS “.
If GB is selected the TV controlling software seeks for programs only in UHF ( C21 to C70 ). The sorting
order is :
1 - BBC1
2 - BBC2
3 - ITV
4 - CH4
5 - CH5
6 - NEWS
If two or more “ identical “programs ( same name but different code e.g. BBC1 and BBC1 Scotland ) are
found the following programs in the list will be shifted up. ( 1 - BBC1, 2 - BBC1, 3 - BBC2, 4 - ITV, 5 CH4, 6 - CH5, 7 - NEWS, ..)
If one of the program above is not found, the associated program number remains empty ( freq.=467.25
Mhz - Skip selected - no name - system=GB).
example A : 1 - BBC1, 2 - BBC2, 3 - ITV, 4 - -----, 5 - CH5, 6 - NEWS, ...
example B ( if 2 BBC1 found ) : 1 - BBC1, 2 - BBC1, 3 - BBC2, 4 - ITV, 5 - -----, 6 - CH5, 7 - NEWS, ...
- 8 -
Service manual WP-795
2 - Safety instruction
WARNING:
equipment.
X-RAY RADIATION PRECAUTION
1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid such
hazards, the high voltage must not exceed the specified limit. The nominal value of the high voltage of
this receiver is 26 KV at max beam current. The high voltage must not, und er any circumstances, exceed
30KV. Each time a receiver requires servicing, the high v oltage should be checked. It is important to use
an accurate and reliable high voltage meter.
2. 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.
SAFETY PRECAUTION
1. Potentials of high voltage are present when this receiver is operating. Operation of the receiver
outside the cabinet or with the back board removed involves a shock hazard from the receiver.
1) Servicing should not be attempted by anyone who is not thoroughly familiar with the
2) Discharge the high potential of the picture tube before handling the tube. The picture tube is
2. If any Fuse in this TV receiver is blown, replace it with the FUSE specified in the Replacement Parts
List.
3. When replacing a high wattage resistor (oxide metal film resistor) in circuit board, keep the resistor
10 mm away from circuit board.
4. Keep wires away from high voltage or high temperature components.
5. This receiver must operate under AC 230 volts, 5O Hz. NEVER connect to DC supply or any other
power or frequency.
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this equipment have special safety-related characteristics. These
characteristics are often passed unnoticed by a visual inspection and the X-RAY RADIATION 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 designated
symbol on the parts list. Before replacing any of these components, read the parts list in this manual
carefully. The use of substitutes replacement parts which do not have the same safety characteristics as
specified in the parts list may create X-RAY Radiation.
Only competent service personnel may carry out work involving the testing or repair of this
precautions necessary when working on high voltage equipment.
highly evacuated and if broken, glass fragments will be violently expelled.
- 9 -
Service manual WP-795
3 - Circuit Block diagram
- 10 -
Service manual WP-795
4 - Alignment instructions
4-1 Microcontroller configuration : Service mode
To switch the TV set into service mode please sees instruction below.
1 - Select pr. number 91
2 - Adjust sharpness to minimum and exit all menu.
3 - Quickly press the key sequence :
To exit SERVICE menu press
In Service Mode press “OK” to stop the microcontroller i.e. the I2C bus is free and the set can be
controlled by external equipment. Press “OK” again to allow the microcontroller to control the set again
C412CEXF2C339V C ELECTRO160V RSS 3.3MF (8X16) TP
C414CMXM2A104J C MYLAR100V 0.1MF J (TP)
C418CCXB1H102K C CERA50V B 1000PF K (TAPPING)
C420CCXB2H222K C CERA500V B 2200PF K (TAPPING)
C500CEXF1H478V C ELECTRO50V RSS 0.47MF (5X11) TP
C501CEXF1H100V C ELECTRO50V RSS 10MF (5X11) TP
C509CEXF1E470V C ELECTRO25V RSS 47MF (5X11) TP
C514CEXF1E101V C ELECTRO25V RSS 100MF (6.3X11) TP
C517CEXF1H109V C ELECTRO50V RSS 1MF (5X11) TP
C519CEXF1H109V C ELECTRO50V RSS 1MF (5X11) TP
C524CMXL1J104JC MYLAR63V MEU 0.1MF J
C525CCXB1H102K C CERA50V B 1000PF K (TAPPING)
C526CMXL1J104JC MYLAR63V MEU 0.1MF J
C527CMXB2A473J C MYLAR100V EU 0.047MF J (TP)
C528CEXF1E101V C ELECTRO25V RSS 100MF (6.3X11) TP
C530CEXF1E101V C ELECTRO25V RSS 100MF (6.3X11) TP
C531CCXF1H473Z C CERA50V F 0.047MF Z (TAPPING)
C532CEXF1H100V C ELECTRO50V RSS 10MF (5X11) TP
C537CBXF1H104Z C CERA SEMI50V F 0.1MF Z (TAPPING)
C540CEXF1H220V C ELECTRO50V RSS 22MF (5X11) TP
C541CEXF1H220V C ELECTRO50V RSS 22MF (5X11) TP
C542CEXF1H100V C ELECTRO50V RSS 10MF (5X11) TP
C543CEXF1H100V C ELECTRO50V RSS 10MF (5X11) TP
C550CEXF1H229V C ELECTRO50V RSS 2.2MF (5X11) TP
C555CEXF1C470V C ELECTRO16V RSS 47MF (5X11) TP
C560CBXF1H104Z C CERA SEMI50V F 0.1MF Z (TAPPING)
C561CEXF1E101V C ELECTRO25V RSS 100MF (6.3X11) TP
C564CEXF1E101V C ELECTRO25V RSS 100MF (6.3X11) TP
C565CBXF1H104Z C CERA SEMI50V F 0.1MF Z (TAPPING)
C585CCXB1H222K C CERA50V B 2200PF K (TAPPING)
C590CXCH1H270J C CERA50V CH 27PF J (TAPPING)
C591CXCH1H270J C CERA50V CH 27PF J (TAPPING)
C592CBXF1H104Z C CERA SEMI50V F 0.1MF Z (TAPPING)
C593CEXF1E101V C ELECTRO25V RSS 100MF (6.3X11) TP
C601CCXB1H472K C CERA50V B 4700PF K (TAPPING)
C602CEXF1H100V C ELECTRO50V RSS 10MF (5X11) TP
C603CCXB1H472K C CERA50V B 4700PF K (TAPPING)
C605CEXF1E470V C ELECTRO25V RSS 47MF (5X11) TP
C608CEXF1H100V C ELECTRO50V RSS 10MF (5X11) TP
C610CEXF1H100V C ELECTRO50V RSS 10MF (5X11) TP
C611CEXF1H339V C ELECTRO50V RSS 3.3MF (5X11) TP
C612CEXF1H109V C ELECTRO50V RSS 1MF (5X11) TP
C613CEXF1H109V C ELECTRO50V RSS 1MF (5X11) TP
C614CEXF1H109V C ELECTRO50V RSS 1MF (5X11) TP
C615CEXF1H109V C ELECTRO50V RSS 1MF (5X11) TP
C616CEXF1H100V C ELECTRO50V RSS 10MF (5X11) TP
C617CBXF1H104Z C CERA SEMI50V F 0.1MF Z (TAPPING)
C620CXCH1H509D C CERA50V CH 5PF D (TAPPING)
C621CXCH1H509D C CERA50V CH 5PF D (TAPPING)
LOCPART CODEPART NAMEPART DESCRIPTIONREMARK
C622CCXF1H223ZC CERA50V F 0.022MF Z (TAPPING)
C625CEXF1H479VC ELECTRO50V RSS 4.7MF (5X11) TP
C626CEXF1H479VC ELECTRO50V RSS 4.7MF (5X11) TP
C629CBXF1H104ZC CERA SEMI50V F 0.1MF Z (TAPPING)
C630CEXF1E470VC ELECTRO25V RSS 47MF (5X11) TP
C631CBXF1H104ZC CERA SEMI50V F 0.1MF Z (TAPPING)
C632CEXF1H479VC ELECTRO50V RSS 4.7MF (5X11) TP
C633CEXF1H479VC ELECTRO50V RSS 4.7MF (5X11) TP
C635CBXF1H104ZC CERA SEMI50V F 0.1MF Z (TAPPING)
C636CEXF1H220VC ELECTRO50V RSS 22MF (5X11) TP
C650CXCH1H470JC CERA50V CH 47PF J (TAPPING)
C660CEXF1H100VC ELECTRO50V RSS 10MF (5X11) TP
C665CCXB1H472K C CERA50V B 4700PF K (TAPPING)
C666CBXF1H104ZC CERA SEMI50V F 0.1MF Z (TAPPING)
C667CCXB1H472K C CERA50V B 4700PF K (TAPPING)
C690CEXF1H479VC ELECTRO50V RSS 4.7MF (5X11) TP
C691CEXF1H479VC ELECTRO50V RSS 4.7MF (5X11) TP
C692CEXF1E470VC ELECTRO25V RSS 47MF (5X11) TP
C698CXCH1H470JC CERA50V CH 47PF J (TAPPING)
C699CXCH1H470JC CERA50V CH 47PF J (TAPPING)
C770CEXF1E101VC ELECTRO25V RSS 100MF (6.3X11) TP
C803CCXF3A472ZC CERA1KV F 4700PF Z (T)
C804CCXF3A472ZC CERA1KV F 4700PF Z (T)
C806CEXF1H330VC ELECTRO50V RSS 33MF (6.3X11) TP
C807CBXF1H104ZC CERA SEMI50V F 0.1MF Z (TAPPING)
C808CEXF1H479VC ELECTRO50V RSS 4.7MF (5X11) TP
C820CCXB3A471KC CERA1KV B 470PF K (T)
C821CCXB1H102K C CERA50V B 1000PF K (TAPPING)
C824CCXB3A471KC CERA1KV B 470PF K (T)
C831CCXB3A471KC CERA1KV B 470PF K (T)
C835CEXF1H470VC ELECTRO50V RSS 47MF (6.3X11) TP
C844CEXF1E101VC ELECTRO25V RSS 100MF (6.3X11) TP
C863CEXF1E101VC ELECTRO25V RSS 100MF (6.3X11) TP
C866CCXB3A471KC CERA1KV B 470PF K (T)
C888CEXF1C470VC ELECTRO16V RSS 47MF (5X11) TP
C950CEXF1H220VC ELECTRO50V RSS 22MF (5X11) TP
C968CMXL2E104KC MYLAR250V MEU 0.1MF K
CA10CCXB1H102K C CERA50V B 1000PF K (TAPPING)
F801A 4857415001CLIP FUSEPFC5000-0702
F801B 4857415001CLIP FUSEPFC5000-0702
I8051UPC574J--ICUPC574J
Q101TKTC3198Y-TRKTC3198Y
Q103TKTC3202Y-TRKTC3202Y (TP)
Q402T2SD1207T-TR2SD1207-T (TAPPING)2
Q403TKTC3198Y-TRKTC3198Y
Q501TKTA1266Y-TRKTA1266Y (TP)
Q502TKTC3198Y-TRKTC3198Y
Q503TKTC3198Y-TRKTC3198Y
Q504TKTC3198Y-TRKTC3198Y
- 20 -
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