
-6-
C7VDS
SERVICE ADJUSTMENTS
After replacing the Memory IC (IC801)]
The memory IC, IC801, stores the service adjustments data for each circuit, therefore, when the memory IC is
replaced, it should be programmed by using “OPTION SETTING” on previous page and the following adjustments.
ADJUSTABLE SERVICE ADJUSTMENT
Item No. OSD Description
6 Screen adjustment
151 WPR - N R - Drive adjustment
152 WPG - N G - Drive adjustment
304 AGC Take Over AGC adjustment
314 TXT - H - POS OSD Positioning adustment
IMPORTANT NOTICE
Do not attempt to adjust service adjustments not listed above otherwise it may cause loss of performance and product safety.
GEOMETRY SERVICE DATA
Service Item Number. Symbol 1 Symbol 2
13
14 A02
15 A03
16 A04
17 A05
18 A06
19 A07
20 A08
21 A09
22 A10
23 A11
24 A12
25 A13
26 A14
27 A15
28 A16
29 A17
30 A18 H BLK SW
31 A19 H BLK L
32 A20 H BLK R
33 A21 OSVE
34 A22 EVB
35 B02
36 B09
37 B10
38 B11
39 B12
40 B13
41 B14
42 B15
43 B16
44 B17
A01
Track. mode 50Hz Full
Vert. Zoom 50Hz Full
Vert. Slope 50Hz Full
Vert. Shift 50Hz Full
Vert. Ampl. 50Hz Full
S-Corr. 50Hz Full
V.Lin.Ctrl. 50Hz Full
V.Linearity 50Hz Full
EW Width 50Hz Full
Hor. Shift 50Hz Full
EW Parabola 50Hz Full
Trapezium 50Hz Full
UC Parabola 50Hz Full
LC Parabola 50Hz Full
Hor. Bow 50Hz Full
Parallel 50Hz Full
Vert. Scroll 50Hz Full
Vert. Zoom 50Hz Natural / or 4:3 squeeze mode
EW Width 50Hz Natural / or 4:3 squeeze mode
Hor. Shift 50Hz Natural / or 4:3 squeeze mode
EW Parabola 50Hz Natural / or 4:3 squeeze mode
Trapezium 50Hz Natural / or 4:3 squeeze mode
UC Parabola 50Hz Natural / or 4:3 squeeze mode
LC Parabola 50Hz Natural / or 4:3 squeeze mode
Hor. Bow 50Hz Natural / or 4:3 squeeze mode
Parallel 50Hz Natural / or 4:3 squeeze mode
Vert. Scroll 50Hz Natural / or 4:3 squeeze mode
Frequency Wide Mode
50Hz Full
50Hz Full
50Hz Full
50Hz Full
50Hz Full
Explanation
Track. Mode(HCO)
Vertical zoom
Vertical slope
Vertical shift
Vertical amplitude
S-correction
V.Lin.Ctrl.
V.Linearity
EW width
Horizontal shift
EW parabola/width
EW trapezium
EW upper corner parabola
EW lower corner parabola
Horizontal bow
Horizontal parallelogram
Vertical Scroll
RGB blanking mode
Timing of wide blanking front(WBF)
Timing of wide blanking rear(WBR)
Black current measuring lines in overscan
Extended vertical blanking
Vertical zoom
EW width
Horizontal shift
EW parabola/width
EW trapezium
EW upper corner parabola
EW lower corner parabola
Horizontal bow
Horizontal parallelogram
Vertical Scroll

-9-
C7VDS
CORNER ADJUSTMENT
1. Receive cross hatch pattern and set screen mode to
“FULL”.
2. Enter the service mode and select item no. 25. UC
PARABOLA for top corner adjustment OR item no.
26. LC PARABOLA for bottom corner adjustment.
3. Press the LEVEL+ or LEVEL - button to correct the
distortion of the vertical line around the corners.
HORIZONTAL CENTRING ADJUSTMENT
1. Receive circular pattern and set screen mode to
“FULL”.
2. Enter the service mode and select item no. 22. HOR.
SHIFT.
3. Press the LEVEL+ or LEVEL - button to adjust the
horizontal centre.
HORIZONTAL WIDTH ADJUSTMENT
1. Receive circular pattern and set screen mode to
“FULL”.
2. Enter to the service mode and select item 21. EW
WIDTH.
3. Press the
LEVEL+ or LEVEL - button to adjust the
horizontal width.
1. Receive circular pattern and set screen mode to
“FULL”.
2. Set controls for brightness and contrast to maximum.
3. Connect high-voltage meter to the anode of CRT and
GND.
4. Confirm that voltage is 26 kV ±1.0kV at maximum
beam current 1.2mA ± 0.05
VERTICAL CENTRING ADJUSTMENT
1. Receive circular pattern and set screen mode to
“FULL”.
2. Enter the service mode and select item no.16.VERT
SHIFT.
.3 Press the LEVEL+ or LEVEL - button to adjust the
vertical centre.
VERTICAL HEIGHT ADJUSTMENT
1. Receive circular pattern and set screen mode to
“FULL”.
2. Enter the service mode and select item no. 17. VERT
AMPL.
3. Press the LEVEL+ or LEVEL - button to adjust the
vertical height.
1. Receive circular pattern and set screen mode to
“FULL”.
2. Enter the service mode and select item no. 314. TXT H - POS.
3. Press the
LEVEL+ or LEVEL - button to adjust
proper OSD positioning.
OSD POSITIONING ADJUSTMENT
VERTICAL ADJUSTMENT
HIGH-VOLTAGE CONFIRMATION
HORIZONTAL ADJUSTMENT
314 TXT - H - POS 7

-17-
C7VDS
PARTS DESCRIPTION AND READING IN SCHEMATIC DIAGRAM
1. The parts specification of resistors, capacitors and
coils are expressed in designated code. Please
check the parts description by the following code
table.
2. Some of transistors and diodes are indicated in
mark for the substitution of parts name. Please
check the parts name by the following code table.
3. Voltages and waveforms were taken with a video
colour bar signal(1Vp-p at 75 ohms terminated) and
controls to normal.
4. Voltages were taken with a high-impedance digital
voltmetre.
Example 2000 K K 1000 BG
Characteristic
Example 160 E M 10
Capacitance value
Tolerance
Type
Rated voltage
Excepting electric capacitors, all
capacitance values of less than 1
are expressed in µF and more
than 1 are in pF.
Example L2
C1 4R7 K N
Tolerance
Inductance value
Manufacture code
Unique code
Mark Material
E Electrolytic
P Electrolytic (non-Polarised)
C Ceramic (temperature compensation)
K Ceramic
F Polyester
N Polypropylene
M Metalised polypropylene
H Metalised polypromylar
B Ceramic (semiconductor)
G Metalised polyester
Y Composite film
S Styrol
T Tantalum oxide solid electrolytic
U Organic semiconductive electrolyte
D Electric double layer electrolytic
Mark Tolerance
A not specified
B ±0.1
C ±0.25
D ±0.5
F±1
G±2
E ±2.5
H±3
J±5
K±0
M±20
N±30
P +100 -0
Q +30 -10
T +50 -10
U +75 -10
V +20 -10
W +100 -10
X +40 -20
Y +150 -10
Z +80 -20
Mark Tolerance (nH) Mark Tolerance (%)
C ±0.25 G ±2
D ±0.5 J ±5
S ±0.3 K ±10
A ±0.2 L ±15
M±20
Coil Reading
Capacitor Reading
Example 1/2 D J 10K B
Example 6 W K 8.2
Example 1/2 C K 1M
Resistor Reading
Characteristic
Z (Carbon fuse)
B (Non-burnable)
Resistance value
Tolerance (see below table)
Material (see below table)
Rated wattage (W)
K indicates in KΩ
M indicate in MΩ
Note: Resistor which is indicated with resistance value only are
1/6W carbon resistor. Resistor which is indicated with material, tolerance and value are 1/4W rated wattage.
Mark Material
D Carbon
N Metal film
S Oxide metal film
C Solid
G Metal glaze
W Wire wounding or cement
H Ceramic
F Fusible
Mark Tolerance
A ±0.05
B ±0.1
C ±0.25
D ±0.5
F±1
G±2
J±5
K±10
M±20
P +5 -15
Z used in 0 ohm
● Material table
● Tolerance table
● Material table
● Tolerance table
Mark Type number
-- 1S1555,1S2473,1S2076,1SS133,DS442,1SS176
K 1S1555,1S2473,1S2076,DS442
L 1S1555,1S2076A,1S2471
M 1SS133,1SS176,GMA01
N 1S1555,1S2473,1S2076,1SS133,DS442,1SS176,1N4148
P 1S1555,1S2076A,1S2471,1N4148
R 1S1555,1S2076,1S2473,DS442,1N4148
AA 1S1555,1S2076,1S2473,1SS133,DS442,1SS176,1N4148,GMA01
● Diode
Mark Type number
-- 2SC536 2SC945A 2SC1815 2SC1740 2SC1740S KSC945C
A E, F, G P, Q, R O, Y, G Q, R, S Q, R, S
B E, F, G P, Q, R O, Y, G Q, R, S
D F, G P, Q Y, G Q, R, S
F F, G P G R, S
H F, G P, Q Y, G Q, R, S Y, G
I E, F, G P, Q, R O, Y, G Q, R, S Y, G
G F, G P G R, S G
AD F, G Q, R Y, GR Q, R, S
AE E, F, G Q, R O, Y, GR Q, R, S
● Transistor (NPN type)
Mark Type number
-- 2SA608 2SA564A 2SA1015 2SA933 2SA933S KSA733C
Y E, F Q, R O, Y, G Q, R
WF R Y, GR
V E, F Q, R O, Y, G Q, R Y, G
U F R Y, G R G
Z E, F Q, R O, Y, G Q, R Q, R
AB F R Y Q, R
AE E, F Q, R O, Y R
● Transistor (PNP type)
Diode/Transistor Type Reading

C7VDS
-19-
CHASSIS ELECTRICAL PARTS LIST
Product safety should be considered when a component replacement is made in any area of a receiver.
Components indicated by a mark in this parts list and the circuit diagram show components whose value have
special significance to product safety. It is particularly recommended that only parts specified on the following
parts list be used for components replacement pointed out by the mark .
013C7VDS ELECTRICAL PARTS
COIL
L901 645 068 0137 DEGAUSS 28" W/F SAMSUNG
PICTURE TUBE
Q901 414 012 9003 CRT W66QDE993X011
MISCELLANEOUS
A900 645 061 5016 UNIT,UK DIGITAL
SP901 645 047 2046 SPEAKER 8 H125/1039
SP902 645 047 2046 SPEAKER 8 H125/1039
WTU 610 309 1914 CORD,SHIELD 1L-1L,L=160,K
W901 645 011 8838 3P AC CORD +2P HOUSE @2.1
W902 610 310 7622 GND CON.EB7D 28"1220MM
1AA0B10H068RA ASSY,PWB,MAIN C7VDS
CAPACITOR
C003 403 314 5915 GRM21BR71C474KA01L PT297
C004 403 314 5915 GRM21BR71C474KA01L PT297
C005 403 215 2310 GRM188R71H123KA01D PT115
C006 403 215 2310 GRM188R71H123KA01D PT115
C011 403 269 5916 GRM219R71C224KC01D PT115
C012 403 269 5916 GRM219R71C224KC01D PT115
C013 403 269 5916 GRM219R71C224KC01D PT115
C014 403 269 5916 GRM219R71C224KC01D PT115
C015 403 269 5916 GRM219R71C224KC01D PT115
C016 403 269 5916 GRM219R71C224KC01D PT115
C017 403 269 5916 GRM219R71C224KC01D PT115
C018 403 269 5916 GRM219R71C224KC01D PT115
C021 403 047 3120 ELECT 47U M 25V
C022 403 195 8408 ELECT 2.2U M 50V
C023 403 218 8151 25 YK 1000 M TA 1020
C024 403 157 1914 GRM1885C1H100JZ01
C025 403 153 9112 GRM1885C1H5R0CD01D PT115
C026 403 068 9016 CERAMIC 100P K 50V
C040 403 113 4119 GRM188R71H222KA01D PT115
C057 403 113 3815 GRM188R71H102KA01D PT115
C1001 403 248 1618 16 YK 47 M TA 0511
C1003 403 157 3611 GRM1885C1H101JZ01D PT115
C1005 403 113 3815 GRM188R71H102KA01D PT115
C1006 403 157 3611 GRM1885C1H101JZ01D PT115
C1007 403 113 3815 GRM188R71H102KA01D PT115
C101 403 233 1111 ELECT 22U M 50V
C1011 403 248 1618 16 YK 47 M TA 0511
C1013 403 157 3611 GRM1885C1H101JZ01D PT115
C1014 403 157 3611 GRM1885C1H101JZ01D PT115
C1016 403 113 3815 GRM188R71H102KA01D PT115
C1017 403 113 3815 GRM188R71H102KA01D PT115
C102 403 039 3527 ELECT 470U M 6.3V
C1031 403 113 3815 GRM188R71H102KA01D PT115
Ref. No.
Part No.
Description
Chassis construction
CE28DFN3-B-00
013C7VDS ELECTRICAL PARTS (PAGE 19)
1AA0B10H068RA ASSY,PWB,MAIN C7VDS (PAGE 19 - 24)
1AA0B10H068RB ASSY,PWB,SOCKET C7VDS (PAGE 24)
1AA0B10E689AB ASSY,PWB,FRONT-B AV3 (PAGE 24)
1AA0B10E689AA ASSY,PWB,FRONT-A MAINS (PAGE 24)
Read description in the Capacitor and Resistor as follows:
CAPACITOR
CERAMIC 100P K 50V
Tolerance Symbols:
Less than 10PF
A: Not specified B: ±0.1PF C:±0.25PF
D: ±0.5PF F: ±1PF G: ±2PF
R: ±0.25-0PF S: ±0-0.25PF E: +0-1PF
More than 10PF
A: Not specified B: ±0.1% C:±0.25%
D: ±0.5% F: ±1% G: ±2%
H: ±3% J: ±5% K: ±10%
L: ±15% M: ±20% N: ±30%
P: +100-0% Q: +30-10% T: +50-10%
U: +75-10% V: +20-10% W:+100-10%
X: +40-20% Y: +150-10% Z: +80-20%
Material:
CERAMIC............Ceramic
MT-PAPER ..........Metallized Paper
POLYESTER ......Polyester
MT-POLYEST ......Metallized Polyester
POLYPRO............Polypropylene
MT-POLYPRO ....Metallized Polypropylene
COMPO FILM......Composite film
MT-COMPO ........Metallized Composite
STYRENE............Styrene
TA-SOLID............Tantalum Solid
AL-SOLID............Aluminium Solid
ELECT ................Electrolytic
NP-ELECT ..........Non-polarised Electrolytic
OS-SOLID ..........Aluminium Solid with Organic Semiconductive Electrolytic
DL-ELECT ..........Double Layered Electrolytic
RESISTOR
CARBON 4.7K J A 1/4W
Rated Wattage
Performance Symbols:
A: General B: Non flammable Z: Low noise
Other: Temperature coefficient
Tolerance Symbols:
A: ±0.05% B: ±0.1% C:±0.25% D: ±0.5%
F: ±1% G:±2% J: ±5% K: ±10%
M:±20% P: +5-15%
Rated value, ohms:
K: 1,000, M: 1,000,000
Material:
CARBON ............Carbon
MT-FILM..............Metal Film
OXIDE-MT ..........Oxide Metal Film
SOLID..................Composition
MT-GLAZE ..........Metal Glaze
WIRE WOUND ....Wire Wound
CERAMIC RES....Ceramic
FUSIBLE RES ....Fusible
Rated Voltage
Rated value: P=pico farad, U=Micro farad
Note: Parts order must contain Service Ref. No., Part No., and descriptions.
!
!
!
!
!
!
!

Part No. SKP20528 C7VDS (SHEET 1-3)
COLOUR TELEVISION
EEEEBBBB8888----DD
DD
SERVICE REF.NO.
MODEL NUMBER
CHASSIS SERIES
CE28DFN3-B-00
CE28DFN3-B
The service Precaution:
The area enclosed by this line
( ) is directly connected
with AC mains voltage. When
servicing the area, connect an
isolating transformer between
TV receiver and AC line to eliminate hazard of electric shock.
Product safety notice:
Product safety should be considered
when a component replacement is
made in any area of a receiver.
Components indicated by a mark /!\ in
this circuit diagram show components
whose values have special significance
to product safety. It is particularly recommended that only parts specified on
the part service manual be used for
components replacement pointed out
by the mark.
Circuit diagram notes :
1. All resistance values are in ohms, K=1,000, M=1,000,000.
2. All resistance rated wattages are 1/6W unless otherwise noted.
3. Excepting electrolytic capacitors, all capacitance values of less
than 1 are expressed in µF and more than 1 are pF.
4. All capacitance rated voltages are 50V unless otherwise noted.
5. All inductance values are in µH.
6. Voltage readings taken a digital voltmeter are from point indicated chassis ground. Voltage readings taken by using a colour
bar signal are with all controls at normal position. Some voltages may vary with signal strength.
7. Waveforms were taken with colour bar and controls adjusted
for normal picture. Waveforms were taken by using a wide
band oscilloscope and a low capacity probe.
8. This circuit diagram covers a basic or
representative chassis only. There
may be some components or partial
circuit differences between the actual
chassis and the circuit diagram.
9.■ Diode 1S1555 may be replaced with
1S2473,1S2076 or DS472 unless
otherwise noted.
■ Transistor 2SC536(Q,R,S),
2SC1740(Q,R,S), 2SC945A(Q,R,P)
or 2SC1815(G,O,Y) unless otherwise noted.
■ Transistor 2SA608(E,F) may be
replaced with 2SA933(Q,R),
2SA564(QA,RA), or 2SA1015(O,Y)
unless otherwise noted.
Expression of capacitance and resistance in circuit diagram.
Capacitance (Example)
1000 C M 2000 D
Characteristic
Capacitance value (220pF)
Tolerance (±20%)
Kind(Ceramic)
Rated voltage (1,000V)
Resistance (Example)
1/2 N J 1.2
Resistance value (1.2Ω)
Tolerance (±5%)
Kind (M.carbon)
Rated wattage(1/2W)
D : Carbon
N : Metallized carbon
S : Oxide metallized
W : Wire wounding
C : Solid
T, A, U, D : Electrolytic
C, K, B : Ceramic
F : Mylar film
M, N : Polypropylene
Z : Metallized paper
J= ± 5%
K= ± 10%
M= ± 20%
Terminal guide
C : Collector
B : Base
E : Emitter
A : Anode
K : Kathode
ON/OFF
FRONT UNIT A FRONT UNIT B
1AA0B10E689AA 1AA0B10E689AB
K16F
K16E
K19H SPK - R
K16FF K1103
SPK - L
KF
240VAC
K7P K3 - AUDIO - PL8003
KQ K7Q K9 - VIDEO - PL8002B
KP K7P K5 - GND - PL8005
K7Q
K2
KH
KA
PL8004
MAIN UNIT DIGITAL MODULE
1AA0B10H068PA K5
K9
K4A KP
K3
K4B
KQ
K4B (VERTICAL) RF IN
PWB SOCKET
K4
A101
PL8003
PL8002A PL8006
PL8002B
PL8005
DIGITAL
TUNER
K2 - 6V SUPPLY - PL8004
1AV4U20B64200
CI SLOT
1AA0B10H068PB
K4 - COMM - PL8002A
K16E - DEGAUSSING
K4A (HORIZONTAL)
B
B
C
E
E
C
B
E
C
K
K
E
C
B
C
E
B
Transistor
C
B
Diode
K
A
E
A
K
A
A
Resistor
123
1
12 x 103= 12kΩ
N/2
N/2 + 1
N
10
9
3
2
1
7
6
5
4
3
2
1

OPTION SETTING
Pin No Function Name Function
[After replacing the Memory IC (IC801)]
The memory IC, IC801, stores the option data of TV set and service adjustments data for each circuit, therefore,
when the memory IC is replaced, it should be programmed to the following settings and “SERVICE ADJUSTMENT”
on pages 6 to 9.
To enter to the Option Mode
+ Press and hold the F/OK button on the remote control and P▼ button on the front panel of the TV. The option
window will appear on the screen.
OPTION
SORT MODE SORTING
PLUG & PLAY ON
WELCOME TEXT ON
AUTO V OLUME OFF
SURROUND ON
VIRT SUB WOOFER ON
WIDE ON
AV3 ON
ADJUST : EXIT : RECALL
OPTION MODE FOR CE28DFN3-B-00
To set the Option Mode
+ Highlight the desired option item by using the P▲ or P▼ button .
+ To switch the option mode, use the Volume - (LEFT) or Volume + (RIGHT) button.
+ The data which is set in the option mode is stored into the memory IC automatically.
The following table shows the available option items and default setting mode.
Option Mode Mode Description & Note
SORT MODE SORTING or Tuning mode, default “SORTING”
TUNING
PLUG & PLAY ON or OFF Plug & Play mode, default “ON”
WELCOME TEXT ON or OFF Display message when first set up, default “ON”
ADJUSTMENTS
IMPORTANT NOTICE
Do not attempt to adjust the following service adjustments except when adjustments are required in servicing
otherwise it may cause loss of performance and product safety.
+ B VOLTAGE ADJUSTMENT
1. Receive white raster pattern.
2. Set controls to normal.
3. Connect digital voltmetre to test point TP-B and GND.
4. Adjust voltage to 150 ±0.5V by using VR641.
AGC ADJUSTMENT
1. Input and tune an RF signal which is UHF to the clearest station.
2. Connect digital voltmetre to test point TP-A and GND.
4. Enter the service mode and select item no. 304. AGC
TAKEOVER
5. Press the LEVEL+ or LEVEL - button to adjust volt-
age to be 3.2Vdc.
FOCUS ADJUSTMENT
By using FOCUS VR, adjust focus control for well
defined scanning lines.
GREY SCALE ADJUSTMENT
ADJUSTMENT
SCREEN
1. Enter the service mode and select item no. 6.
COLLAPSED LINE
2. Turn screen VR until collapsed line is just visible then
stop turning. Press menu key on remote control to exit
the service mode.
PCC ADJUSTMENT
PCC
ADJUSTMENT
1. Receive cross hatch pattern and set screen mode to
“FULL”.
2. Enter the service mode and select item no. 23. EW
PARABOLA
3. Press the LEVEL+ or LEVEL - button to adjust the
vertical line to be straight.
TRAPEZOID
1. Receive cross hatch pattern and set screen mode to
2. Enter the service mode and select item no. 24.
3. Press the LEVEL+ or LEVEL - button to correct the
ADJUSTMENT
“FULL”.
TRAPEZIUM
trapezum distortion of the vertical line.
AUTO VOLUME ON or OFF Auto volume default “OFF”
SURROUND ON or OFF Surround sound default “ON”
VIRT SUB WOOFER ON or OFF Virtual Sub Woofer default “ON”
WIDE ON or OFF Wide mode, default “ON”
AV3 ON or OFF Front AV disable, default “ON”
Exit from the Service Mode
+ Press the MENU button.
SERVICE ADJUSTMENTS
After replacing the Memory IC (IC801)]
The memory IC, IC801, stores the service adjustments data for each circuit, therefore, when the memory IC is
replaced, it should be programmed by using “OPTION SETTING” on previous page and the following adjustments.
ADJUSTABLE SERVICE ADJUSTMENT
Item No. OSD Description
6 Screen adjustment
151 WPR - N R - Drive adjustment
152 WPG - N G - Drive adjustment
304 AGC Take Over AGC adjustment
314 TXT - H - POS OSD Positioning adustment
GEOMETRY SERVICE DATA
Service Item Number. Symbol 1 Symbol 2
13
14 A02
15 A03
16 A04
17 A05
18 A06
19 A07
20 A08
21 A09
22 A10
23 A11
24 A12
25 A13
26 A14
27 A15
28 A16
29 A17
30 A18 H BLK SW
31 A19 H BLK L
32 A20 H BLK R
33 A21 OSVE
34 A22 EVB
35 B02
36 B09
37 B10
38 B11
39 B12
40 B13
41 B14
42 B15
43 B16
44 B17
IMPORTANT NOTICE
Do not attempt to adjust service adjustments not listed above otherwise it may cause loss of performance and product safety.
Track. mode 50Hz Full
A01
EW Parabola 50Hz Full
UC Parabola 50Hz Full
LC Parabola 50Hz Full
EW Parabola 50Hz Natural / or 4:3 squeeze mode
UC Parabola 50Hz Natural / or 4:3 squeeze mode
LC Parabola 50Hz Natural / or 4:3 squeeze mode
Frequency Wide Mode
Vert. Zoom 50Hz Full
Vert. Slope 50Hz Full
Vert. Shift 50Hz Full
Vert. Ampl. 50Hz Full
S-Corr. 50Hz Full
V.Lin.Ctrl. 50Hz Full
V.Linearity 50Hz Full
EW Width 50Hz Full
Hor. Shift 50Hz Full
Trapezium 50Hz Full
Hor. Bow 50Hz Full
Parallel 50Hz Full
Vert. Scroll 50Hz Full
Vert. Zoom 50Hz Natural / or 4:3 squeeze mode
EW Width 50Hz Natural / or 4:3 squeeze mode
Hor. Shift 50Hz Natural / or 4:3 squeeze mode
Trapezium 50Hz Natural / or 4:3 squeeze mode
Hor. Bow 50Hz Natural / or 4:3 squeeze mode
Parallel 50Hz Natural / or 4:3 squeeze mode
Vert. Scroll 50Hz Natural / or 4:3 squeeze mode
50Hz Full
50Hz Full
50Hz Full
50Hz Full
50Hz Full
To enter to the Service Mode
+ Press and hold the GREEN button on the remote control and then press the P▼ button on the cabinet.
To select the service item and change data value
+ To select the adjustment item, use the P▲ or P▼ button.
+ To change the service data, use the Volume -(LEFT) or Volume + (RIGHT) button.
+ The data which is set in the service mode is stored into the memory IC automatically.
VICE MODE
SER
SERVICE
000 EB8D 3_52
SERVICE SERVICE SOFTWARE
ITEM ITEM VERSION
NUMBER DESCRIPTION
Exit from the Service Mode
+ Press the MENU button or turn off the TV set by using the Mains switch.
INITIALISATION OF MEMORY IC
To initialise the memory IC (IC801), press and hold the NORMAL button on the remote control, then press
the P▼ button on the front panel of the TV set. The tv set will switch into standby mode. Turn the Mains switch Off
and On, then switch on from standby. The initialisation is now completed.
When initialised the memory IC and all of the setting data (option data and service adjustment data) stored in the IC
are reset to the default value. It is necessary to set the option settings and readjust the service adjustments listed in
this manual and to re-tune all the channels.
Explanation
EW upper corner parabola
EW lower corner parabola
Timing of wide blanking front(WBF)
Timing of wide blanking rear(WBR)
Black current measuring lines in overscan
Extended vertical blanking
EW upper corner parabola
EW lower corner parabola
Track. Mode(HCO)
Vertical zoom
Vertical slope
Vertical shift
Vertical amplitude
S-correction
V.Lin.Ctrl.
V.Linearity
EW width
Horizontal shift
EW parabola/width
EW trapezium
Horizontal bow
Horizontal parallelogram
Vertical Scroll
RGB blanking mode
Vertical zoom
EW width
Horizontal shift
EW parabola/width
EW trapezium
Horizontal bow
Horizontal parallelogram
Vertical Scroll
DRIVE ADJUSTMENT
3. Select item no.151. WPR - N (R-Drive) or 152. WPG N (G-Drive) and adjust both initially to 20.
4. Change data value of each item by using LEVEL + or
LEVEL - button to obtain the proper white balance.
CORNER ADJUSTMENT
1. Receive cross hatch pattern and set screen mode to
“FULL”.
2. Enter the service mode and select item no. 25. UC
PARABOLA for top corner adjustment OR item no.
26. LC PARABOLA for bottom corner adjustment.
3. Press the LEVEL+ or LEVEL - button to correct the
distortion of the vertical line around the corners.
HORIZONTALADJUSTMENT
HORIZONT
1. Receive circular pattern and set screen mode to
2. Enter the service mode and select item no. 22. HOR.
3. Press the LEVEL+ or LEVEL - button to adjust the
HORIZONTAL WIDTH ADJUSTMENT
1. Receive circular pattern and set screen mode to
2. Enter to the service mode and select item 21. EW
3. Press the LEVEL+ or LEVEL - button to adjust the
AL CENTRING ADJUSTMENT
“FULL”.
SHIFT.
horizontal centre.
“FULL”.
WIDTH.
horizontal width.
HIGH-VOLTAGE CONFIRMATION
1. Receive circular pattern and set screen mode to
“FULL”.
2. Set controls for brightness and contrast to maximum.
3. Connect high-voltage meter to the anode of CRT and
GND.
4. Confirm that voltage is 26 kV ±1.0kV at maximum
beam current 1.2mA ± 0.05
1 VSS Gnd
2 VSS Gnd
3 1v8_1 1.8v Supply
4 3v3 3.3v Supply
5 Vref 3.3v Reference
6 Vref V Ref Gnd
7 Vref 3.3v Reference
8 Vref V Ref Gnd
9 Vref 3.3v Reference
10 XTAL IN Clock Oscillator
11 XTAL OUT Clock Oscillator
12 Vss Gnd
13 Vguard sw
14 Dec Dig 1.8v source supp
15 5v 5v Supply
16 Phi 2 Phi 2
17 Phi 1 Phi 1
18 Gnd Gnd
19 Sec pii
20 Dec BG
21 EW Drive parabola out
22 VdrB Vertical drive B
23 VdrA Vertical drive A
24 Vif 1 Vision IF 1
25 Vif 2 Vision IF 2
26 Vsc
27 I Ref Reference curren
28 Gnd Gnd
29 Sif 1 Sound IF 1
VERTICAL ADJUSTMENT
VERTICAL
1. Receive circular pattern and set screen mode to
2. Enter the service mode and select item no.16.VERT
.3 Press the LEVEL+ or LEVEL - button to adjust the
VERTICAL HEIGHT ADJUSTMENT
1. Receive circular pattern and set screen mode to
2. Enter the service mode and select item no. 17. VERT
3. Press the LEVEL+ or LEVEL - button to adjust the
CENTRING ADJUSTMENT
“FULL”.
SHIFT.
vertical centre.
“FULL”.
AMPL.
vertical height.
OSD POSITIONING ADJUSTMENT
1. Receive circular pattern and set screen mode to
“FULL”.
2. Enter the service mode and select item no. 314. TXT H - POS.
3. Press the LEVEL+ or LEVEL - button to adjust
proper OSD positioning.
314 TXT - H - POS 7
CPU PORT FUNCTIONS
continued