Part No. SKSM0553
C5WVV
MAY 2002
Service Manual
Colour Television
PRODUCT CODE: 111361016
ORIGINAL VERSION: Chassis No. EB6-D
Model No. CE28CN6-C
Service Ref. No. CE28CN6-C-00
Give complete "SERVICE REF. NO." for parts
order or servicing. It is shown on the rating plate
at the cabinet back of the unit.
Note
This T.V. receiver will not work properly in foreign
countries where the television transmission
system and power source differ from the design
specifications. Refer to the specification table on
page 2.
CONTENTS
Safety precautions ..........................................................................................................................................2
Chassis Diagrams ............................................................................................................................................3
Disassembly ....................................................................................................................................................4
Service adjustments [Option Setting] ..............................................................................................................5
Service adjustments [Service Adjustment]-[Adjustment] ..........................................................................6 -10
CPU port functions ........................................................................................................................................11
IC block diagrams ..................................................................................................................................12 - 13
Pin description of semi-conductors ................................................................................................................14
Parts description and reading in schematic diagram ....................................................................................15
Cabinet parts list ............................................................................................................................................16
Electrical parts list ..................................................................................................................................17 - 23
CE
28CN6-C
Please use Schematic Diagram SKP20355 with
this service manual.
EB6-D chassis
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.
2
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
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
B/G, D/K
Colour system
PAL/NTSC4.43 on Air
(PAL/NTSC4.43/NTSC3.58 in AV mode)
Channel coverage
VHF: E2-E12, R1-R12
UHF: 21-69
CATV: X, Y, Z, S1-S41
Aerial input impedance
75ohm
AV terminals
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, S-VHS and audio-L/R
Output: Monitor-output with composite video and audio-L/R
Sound output
5.0 x 2
(continuous) (watts)
Picture tubes (Inches)
28
Dimensions (WxHxD)
736 x 597 x 494 mm
Weight
32 kg
Specifications subject to change without notice.
3
EB6-D chassis
This is a basic diagram for all models and therefore differs slightly from the actual block diagram.
1
5
7
10
SP902
SPEAKER
IC001
A
UDIO-OUT
<LA4270>
IC201
IF/VIDEO/CHROMA/DEF
<TB1251>
6
7
50
51
54
34
35
15
16
17
18
IF-IN
X132
A101
TUNER
IF
SCL
SDA
L171
Pix
Video-Out
SIF-OUT
K1002
SCART SC2
K1001
SCART SC1
48
46
43
39
38
BLK/R/G/B-IN
SCL
SD
A
25
26
32
20
21
22
CR
T
HEA
TER
200V
Q701
Q711
Q721
B
R
G
PICTURE
TUBE
H.V
FOCUS/SCREEN
T451
FL
YBA
CK
R
G
B
Q431
Q430
Q432
H-OUTPUT
D.
Y
V
-OUT
V
-FB
H-OUT
4
2
IC501
V
-OUTPUT
<LA7833>
IC1201
A
V
-VIDEO-SW
<LA7954>
IC1202 C-SW
<NJM2233BD>
BLK
R
G
B
45
18
17
16
15
34
33
54
11
21
20
8
1
19
MUTE
IC801
CPU
IC3451
NICAM/
STEREO
RC-IN
A1901
RC
RECEIVER
KEY
-IN
KEY
SW
SD
A
SCL
SD
A
SCL
IC803
MEMOR
Y
PRO
TECT
POWER
D641
9V
IC642
D647
5V
-1
24V
IC643
Q661
Q651
Q682
Q685
25V
150V
Q641
Q686
D615
12
13
14
11
18
15
5
3
2
8
Q611
SW901
D603-D606
AC
C607
Q613
Reg.
C-IN
C-IN
Y
-IN
Video/Y
-IN
Video/Y-Out
Video-IN
SYNC-IN
R/G/B-OUT
T611
CONVER
TER
D637
D646
5V
IC641
Q666
AERIAL
5V
12
60
61
3
69
18
7
3
1
Outline
Fig.-1
CHASSIS DIAGRAMS
4
EB6-D chassis
DISASSEMBLY
CABINET BACK DISASSEMBLY
1. Remove 7 screws(A) to take the cabinet back off.
AV1
AV
(A)
(A)
(A)
(A)
5
EB6-D chassis
SERVICE ADJUSTMENTS
To enter 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.
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.
Following table shows the available option items and default setting mode.
Exit from the Option Mode
+ Press the RECALL
button on the remote control.
Option Mode
Mode
Description & Note
ON-TIMER
ON or OFF
On-timer available, default "ON"
Wel. Text
ON or OFF
Display message when first set up, default "ON"
P&P
ON or OFF
Plug & Play mode, default "ON"
SORT MODE
Tuning
Tuning mode, default "Tuning"
or Sorting
Destination
BG/DK
Destination option ,BG, BG/DK, SECAM, I-UK,
I-IRE, default "BG/DK"
3D Surround
ON or OFF
3D Surround available, default "ON"
2 step mute
ON or OFF
Mute mode option, default "OFF"
AV3 mode
ON or OFF
Front AV mode option, default "ON"
ON TIMER
ON
Wel. TEXT
ON
P&P
ON
SORT MODE
Tuning
Destination
BG/DK
3D Surround
OFF
2 step mute
ON
AV3 mode
OFF
[After replacing the Memory IC (IC803)]
The memory IC, IC803, stores the feature setting data of TV set and service adjustments data for each circuit,
therefore, when the memory IC is replaced, it should be programmed by following "OPTION SETTING" and
"SERVICE ADJUSTMENT".
OPTION SETTINGS FOR CE28CN6-C-00
?