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Colour Television
Service Manual CE21CN9F-C
Model CE21CN9F-C
Service Ref. No. CE21CN9F-C-00
PRODUCT CODE: 111360803
ORIGINAL VERSION: Chassis No. EB8-A
Please use Schematic Diagram SKP20516
with this Service Manual.
Give complete "SERVICE REF. NO." for parts
order or servicing, it is shown on the rating sheet
on the cabinet back of the TV set.
Note
This TV receiver will not work properly in foreign
countries where the television transmission
system and power source differ from the design
specifications. Refer to the specifications for the
design specifications
Contents
Safety precautions/Specifications ..................................................................................................................2
Block diagrams ..............................................................................................................................................3
Cabinet Disassembly ......................................................................................................................................4
Adjustment and Repair Procedures............................................................................................................5~9
CPU Functions ..............................................................................................................................................................................10~11
Component Locations ..................................................................................................................................12
IC Block Diagrams ..................................................................................................................................13~15
Pin description of semiconductors ................................................................................................................16
Part Description and reading of schematic diagram ....................................................................................17
Cabinet Parts List/TV Stand parts list ..........................................................................................................18
Electric Parts List ....................................................................................................................................19~24
Part No. SKSM0781 C5KDS JANUARY 2005
SAFETY PRECAUTION
1: An isolation transformer should be connected in the 3: When replacing a chassis in the cabinet, always be
power line between the receiver and the AC line certain that all the protective devices are installed
when a service is performed on the primary of the properly, such as, control knobs, adjustment covers
converter transformer of the set. or shields, barriers, isolation resistor-capacitor networks
etc. Before returning any television to the customer,
2: Comply with all caution and safety-related notes the service technician must be sure that it is completely
provided on the cabinet back, inside the cabinet, on safe to operate without danger of electrical shock.
the chassis or the picture tube.
X-RADIATION PRECAUTION
The primary source of X-RADIATION in the television receiver is the picture tube. The picture tube is specially
constructed to limit X-RADIATION emissions. For continued X-RADIATION protection, the replacement tube
must be the same type as the original including suffix letter. Excessive high voltage may produce potentially
hazardous X-RADIATION. To avoid such hazards, the high voltage must be maintained within specified limit.
Refer to this service manual, high voltage adjustment for specific high voltage limit. If high voltage exceeds
specified limits, take necessary corrective action. Carefully follow the instructions for +B1 volt power supply
adjustment, and high voltage adjustment to maintain the high voltage within the specified limits.
PRODUCT SAFETY NOTICE
Product safety should be considered when a component replacement is made in any area of a receiver.
Components indicated by mark ! in the parts list and the schematic diagram designate components in which
safety can be of special significance. It is particularly recommended that only parts designated on the parts list in
this manual be used for component replacement designated by mark ! . No deviations from resistance wattage
or voltage ratings may be made for replacement items designated by mark ! .
SPECIFICATIONS
Power source AC 220~240V, 50Hz
Television system System B/G, I, D/K, L/L'
Colour system PAL/NTSC4.43 (PAL/NTSC4.43/NTSC3.58 IN AV MODE)
Receiving channel UHF: #21~69
VHF: E2-E12, F2-F10, R1-R12
CATV: X, Y, Z, S1-S41, B-Q
Aerial input impedance 75ohm
Rear AV terminal
AV1: CENELEC standard
INPUT: Composite video, RGB and Audio L/R
OUTPUT: TV-output with composite video and audio L/R
AV2: CENELEC standard
INPUT: Composite video, RGB, S-VHS and Audio L/R
OUTPUT: Monitor output with composite video and Audio L/R
Front AV terminal
AV3: RCA jacks
INPUT: Composite video and Audio L/R
Sound output(Music) 5x2
Dimensions (WxHxD) 612 x 476 x 482mm
Weight 21 Kg
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C5KDS
C5KDS
This is a diagram for all models and therefore differs slightly from the actual block diagram.
5
A1901
RC RECEIVER
SPEAKER A101
SP901 IC001 TUNER
AUDIO AMPLIFIER
SP902
30v 5v
Q866
PF
KEY SW IF IN
127 60 61 97 108 109 24 X121
25
120 29 SIF IN
30 X122
31
2
T611 I C BUS CONTROL
CONVERTER IC801 9 80 SC_1 B-IN
P.F MEMORY 9 79 SC_1 G-IN
TO UOC PINS
3,100,117,118,124 78
SC_1 R-IN
Q202 77 SC1 FB IN
IC645 1V8_1 Q201 Q1001
14v 5v 2 SC_1 VIDEO OUT Q1002
1 43
SCART 1
C609 Q204 14
SC_1 VIDEO IN
K1001
25v 4
55
7v
1V8_2 Q203 SCART 1 AUDIO L/R OUT
34
35
D671 36
TO UOC PINS 10
-3-
37 SCART 1 AUDIO L/R IN
93 & 96
X201
75 SC_2 FB -IN
Q651
3v3 St-By
IC666
3v3
11 UOC 72 SC_2 G -IN
+14v Q682 71 SC_2 B- IN
SCART 2
IC601 SC_2 R-IN
K1002
TN6Q04 ON/OFF 70 Q1003
-14v UOC PIN 107 107 SC_2 VIDEO OUT Q1004
48
SC_2 VIDEO IN
58
145v 49 SCART 2 AUDIO L/R OUT
Q642 Q625 50
62
106 63 SCART 2 AUDIO L/R IN
D610 PICTURE TUBE
AC Q641
K1101
51 AV3 AUDIO L/R & VIDEO IN R OUT
SW601 53
Q675 St-BY UOC
PIN 106 22 23 128 2 6 84 85 86 54 GOUT
BOUT
IC7 01
IK
Q439
D441 Q431 145V
Q432 T451 FLYBACK
CRT H.V
L461 Heater
IC501 Q462
L462
Q461 SCREEN & FOCUS
V-OUTPUT
LA78045 Q401
BLOCK DIAGRAM
200v
To CRT
Q402
VERTICAL Q403
HORIZONTAL
SCAN COIL SCAN COIL ON/OFF CONTROL
CPU PIN 106
Outline
CABINET DISASSEMBLY
CABINET BACK DISASSEMBLY
1. Remove 4 screws(A) for 21"
2. Pull out the cabinet back.
(A) (A)
AV AV1
(A) (A)
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C5KDS
OPTION SETTING
[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 Pw button on the front panel of the TV. The option
window will appear on the screen.
OPTION
SORT MODE SORTING
P&P ON
WEL. TEXT ON
AUTO VOLUME OFF
SURROUND ON
VIRT SUB WOOFER ON
COUNTRY B/G, D/K, I, L/L'
WIDE ON
AV3 ON
TEXT NO SIGNAL ON
AFC OFF
ADJUST : EXIT : RECALL
OPTION MODE FOR CE21CN9F-C-00
To set the Option Mode
+ Highlight the desired option item by using the Pv or Pw 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
P&P ON or OFF Plug & Play mode, default "ON"
WEL. TEXT ON or OFF Display message when first set up, default "ON"
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"
COUNTRY UK or IRE, EU or TV system, default "BG/DK / I / LL' "
BG/DK / I / LL'
WIDE ON or OFF Wide mode, default "ON"
AV3 ON or OFF Front AV disable, default "ON"
TEXT NO SIGNAL ON or OFF Disables Text when no signal, default "ON"
AFC ON or OFF Auto Frequency Control default "OFF"
Exit from the Service Mode
+ Press the MENU/ i button.
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C5KDS
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
7 VG2 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 Explanation
Frequency Wide Mode
13 A01 Track. mode 50Hz Full Track. Mode(HCO)
14 A02 Vert. Zoom 50Hz Full Vertical zoom
15 A03 Vert. Slope 50Hz Full Vertical slope
16 A04 Vert. Shift 50Hz Full Vertical shift
17 A05 Vert. Ampl. 50Hz Full Vertical amplitude
18 A06 S-Corr. 50Hz Full S-correction
19 A07 V.Lin.Ctrl. 50Hz Full V.Lin.Ctrl.
20 A08 V.Linearity 50Hz Full V.Linearity
21 A09 EW Width 50Hz Full EW width
22 A10 Hor. Shift 50Hz Full Horizontal shift
23 A11 EW Parabola 50Hz Full EW parabola/width
24 A12 Trapezium 50Hz Full EW trapezium
25 A13 UC Parabola 50Hz Full EW upper corner parabola
26 A14 LC Parabola 50Hz Full EW lower corner parabola
27 A15 Hor. Bow 50Hz Full Horizontal bow
28 A16 Parallel 50Hz Full Horizontal parallelogram
29 A17 Vert. Scroll 50Hz Full Vertical Scroll
30 A18 H BLK SW 50Hz Full RGB blanking mode
31 A19 H BLK L 50Hz Full Timing of wide blanking front(WBF)
32 A20 H BLK R 50Hz Full Timing of wide blanking rear(WBR)
33 A21 OSVE 50Hz Full Black current measuring lines in overscan
34 A22 EVB 50Hz Full Extended vertical blanking
35 B02 Vert. Zoom 50Hz Natural / or 4:3 squeeze mode Vertical zoom
36 B09 EW Width 50Hz Natural / or 4:3 squeeze mode EW width
37 B10 Hor. Shift 50Hz Natural / or 4:3 squeeze mode Horizontal shift
38 B11 EW Parabola 50Hz Natural / or 4:3 squeeze mode EW parabola/width
39 B12 Trapezium 50Hz Natural / or 4:3 squeeze mode EW trapezium
40 B13 UC Parabola 50Hz Natural / or 4:3 squeeze mode EW upper corner parabola
41 B14 LC Parabola 50Hz Natural / or 4:3 squeeze mode EW lower corner parabola
42 B15 Hor. Bow 50Hz Natural / or 4:3 squeeze mode Horizontal bow
43 B16 Parallel 50Hz Natural / or 4:3 squeeze mode Horizontal parallelogram
44 B17 Vert. Scroll 50Hz Natural / or 4:3 squeeze mode Vertical Scroll
IMPORTANT NOTICE
Do not attempt to adjust service adjustments not listed above otherwise it may cause loss of performance and product safety.
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C5KDS
To enter to the Service Mode
+ Press and hold the GREEN button on the remote control and then press the Pw button on the cabinet.
To select the service item and change data value
+ To select the adjustment item, use the Pv or Pw 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.
SERVICE MODE
SERVICE
000 EB8A 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 Pw 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.
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C5KDS
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 115