SANYO CE21CN8F Service Manual
Part No. SKSM0693 C5KYV AUGUST 2004
Colour Television
Service Manual
Model CE21CN8F-C
Service Ref. No. CE21CN8F-C-00
PRODUCT CODE: 111360818
ORIGINAL VERSION: Chassis No. EB8-A
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
CE21CN8F-C
Contents
Safety precautions/Specifications ..................................................................................................................2
Block diagrams ..............................................................................................................................................3
Cabinet Disassembly......................................................................................................................................4
Adjustment and Repair Procedures............................................................................................................5~9
CPU Functions ..............................................................................................................................................................................10~1 1
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
Please use Schematic Diagram SKP20462
inserted with this Service Manual.
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C5KYV
SAFETY PRECAUTION
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
SPECIFICATIONS
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 .
1: An isolation transformer should be connected in the
power line between the receiver and the AC line
when a service is performed on the primary of the
converter transformer of the set.
2: Comply with all caution and safety-related notes
provided on the cabinet back, inside the cabinet, on
the chassis or the picture tube.
3: When replacing a chassis in the cabinet, always be
certain that all the protective devices are installed
properly, such as, control knobs, adjustment covers
or shields, barriers, isolation resistor-capacitor networks
etc. Before returning any television to the customer,
the service technician must be sure that it is completely
safe to operate without danger of electrical shock.
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 AVterminal
AV3: RCA jacks
INPUT: Composite video and Audio L/R
Sound output(Music) 5 x 2
Dimensions (WxHxD) 612 x 476 x 482mm
Weight 21 Kg
!
!
!
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C5KYV
BLOCK DIAGRAM
This is a diagram for all models and therefore differs slightly from the actual block diagram.
Outline
SW601
AC
C609
TN6Q04
IC601
SCAN COIL
VERTICAL
HORIZONTAL
SCAN COIL
V-OUTPUT
LA78045
Q461
IC501
Q462
L462
L461
Q432
D441
Q431
Q439
Q675
PIN 106
22 23
128
2
6
84 85 86
D610
Q641
St-BY UOC
106
Q642
Q625
145v
Q651
+14v
-14v
Q682
IC666
3v3
ON/OFF
UOC PIN 107
107
D671
3v3 St-By
TO UOC PINS
93 & 96
X201
10
11
UOC
7v
1V8_2
Q203
25v
4
Q204
14
14v
1
5v
2
IC645
1V8_1
Q202
Q201
CONVERTER
T611
P.F
3,100,117,118,124
TO UOC PINS
I
IC801
MEMORY
2
C BUS CONTROL
9
9
12031127
60 61
97
108 109
KEY SW
SPEAKER
SP901
SP902
IC001
AUDIO AMPLIFIER
PF
Q866
5
A1901
RC RECEIVER
ON/OFF CONTROL
CPU PIN 106
Q402
Q403
To CRT
200v
Q401
145V
CRT
Heater
T451 FLYBACK
SCREEN & FOCUS
H.V
BOUT
IK
K1101
515354
AV3 AUDIO L/R & VIDEO IN
GOUT
R OUT
IC7 01
PICTURE TUBE
49
50
58
62
63
SCART 2 AUDIO L/R OUT
SCART 2 AUDIO L/R IN
48
SC_2 VIDEO IN
K1002
SCART 2
75
72
71
70
SC_2 VIDEO OUT
SC_2 R-IN
SC_2 B- IN
SC_2 G -IN
SC_2 FB -IN
Q1003
Q1004
553435
36
37
SCART 1 AUDIO L/R IN
SCART 1 AUDIO L/R OUT
K1001
SCART 1
SC_1 VIDEO IN
43
SC_1 VIDEO OUT
Q1001
Q1002
807978
77
SC1 FB IN
SC_1 R-IN
SC_1 G-IN
SC_1 B-IN
30
29
X122
25
X121
SIF IN
24
IF IN
TUNER
A101
5v30v
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C5KYV
CABINET DISASSEMBLY
CABINET BACK DISASSEMBLY
1. Remove 4 screws(A) for 21”
2. Pull out the cabinet back.
(A)
(A)
(A)
(A)
AV1
AV
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C5KYV
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 P▼ button on the front panel of the TV. The option
window will appear on the screen.
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.
Exit from the Service Mode
+ Press the MENU button.
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 “EU”
BG/DK / I / LL’
WIDE ON or OFF Wide mode, default “OFF”
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”
OPTION MODE FOR CE21CN8F-C-00
i
OPTION
SORT MODE SORTING
P&P ON
WEL. TEXT ON
AUT O VOLUME OFF
SURROUND OFF
VIRT SUB WOOFER ON
COUNTRY BG/DK/I/LL'
WIDE OFF
AV3 OFF
TEXT NO SIGNAL ON
AFC OFF
ADJUST : EXIT : RECALL
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C5KYV
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
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
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C5KYV
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.
SERVICE MODE
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.
SERVICE
000 EB8A 3_52
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C5KYV
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.
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 ±0.5V by using VR641.
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
TAKE OVER
5. Press the LEVEL+ or LEVEL - button to adjust volt-
age to be 3.2Vdc.
By using FOCUS VR, adjust focus control for well
defined scanning lines.
SCREEN ADJUSTMENT
1. Receive black and white pattern.
2. Enter the service mode and select item no. 7. VG 2
3. Turn screen VR from min to max. OSD will change
from below to above. Turn back until below appears
and then stop turning.
DRIVE ADJUSTMENT
6. Select item no.151. WPR - N (R-Drive) or 152. WPG -
N (G-Drive) and adjust both initially to 20.
7. Change data value of each item by using LEVEL + or
LEVEL - button to obtain the proper white balance.
GREY SCALE ADJUSTMENT
FOCUS ADJUSTMENT
AGC ADJUSTMENT
+ B VOLTAGE ADJUSTMENT
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