SERVICE HINTS.......................................................................................................................................................................3
SERVICE POSITION.................................................................................................................................................................4
ADJUSTMENT PROCEDURE AND SELF-CHECK ..................................................................................................................5
PARTS LOCATION.................................................................................................................................................................12
REPLACEMENT PARTS LIST................................................................................................................................................13
1. It is advisable to insert an isolation transformer in the
a.c. supply before servicing a hot chassis.
2. When servicing, observe the original lead dress in the
high voltage circuits. If a short circuit is found, replace
all parts that have been overheated or damaged by
the short circuit.
3. After servicing, see that all the protective devices
such as insulation barriers, insulation papers, shields
and isolation R-C combinations are correctly
installed.
4. When the receiver is not being used for a long period
of time, unplug the power cord from the a.c. outlet.
5. Potentials as high as 33kV are present when this
receiver is in operation. Operation of the receiver
without the rear cover involves the danger of a shock
hazard from the receiver power supply. Servicing
should not be attempted by anyone who is not
familiar with the precautions necessary when working
on high voltage equipment. Always discharge the
anode of the tube.
6. After servicing make the following leakage current
checks to prevent the customer from being exposed
to shock hazard.
LEAKAGE CURRENT COLD CHECK
1. Unplug the a.c. cord and connect a jumper between
the two prongs of the plug.
2. Turn on the receiver’s power switch.
3. Measure the resistance value with an ohmmeter,
between the jumpered a.c. plug and each exposed
metallic cabinet part on the receiver, such as screw
heads, aerials, connectors, control shafts etc. When
the exposed metallic part has a return path to the
chassis, the reading should be between 4M ohm and
20M ohm. When the exposed metal does not have a
return path to the chassis, the reading must be
infinite.
LEAKAGE CURRENT HOT CHECK
1. Plug the a.c. cord directly into the a.c. outlet. Do not
use an isolation transformer for this check.
2. Connect a 2kΩ 10W resistor in series with an
exposed metallic part on the receiver and an earth,
such as a water pipe.
3. Use an a.c. voltmeter with high impedance to
measure the potential across the resistor.
4. Check each exposed metallic part and check the
voltage at each point.
5. Reverse the a.c. plug at the outlet and repeat each of
the above measurements.
6. The potential at any point should not exceed
1,4 Vrms. In case a measurement is outside the limits
specified, there is a possibility of a shock hazard, and
the receiver should be repaired and rechecked before
it is returned to the customer.
HOT CHECK CIRCUIT
A.C. VOLTMETER
2kΩ 10 Watts
TO INSTRUMENT’S EXPOSED
METALLIC PARTS
Fig. 1.
X-RADIATION WARNING
1. The potential sources of X-Radiation in TV sets are
the high voltage section and the picture tube.
2. When using a picture tube test jig for service, ensure
that the jig is capable of handling 33kV without
causing X-Radiation.
NOTE: It is important to use an accurate periodically
calibrated high voltage meter.
1. Set the brightness to minimum.
2. Measure the high voltage. The meter should
indicate:- 32kV ± 1kV. If the meter indication is out of
tolerance, immediate service and correction is
required to prevent the possibility of premature
component failure.
3. To prevent any X-Radiation possibility, it is essential
to use the specified tube.
WATER PIPE
(
EARTH)
2
SERVICE HINTS
How to remove the rear cover
1. Remove the 10 screws as shown in Fig.2.
SCREWS
Fig.2.
LOCATION OF CONTROLS
M-Board
F-Board
E-Board
G-Board
Fig.3.
Y-Board
V-Board
N-Board
Focus
D-BoardH-Board
Screen
3
HOW TO MOVE THE CHASSIS INTO SERVICE POSITION
(A)
(
1. Remove the bead clamper from the mains lead and affix, using back cover screw, into top right-hand cabinet rib (A),
shown in Fig.4.
2. Remove 2 screws (B), as shown in Fig.5, and remove speaker assembly.
3. Hold and lift the rear of the chassis and gently pull the chassis toward you, as shown in Fig.4.
4. Release the respective wiring clips and rotate the chassis vertically through 90°, anti-clockwise.
5. Locate the base of the chassis frame into location (C), shown in Fig.6 / Fig.8.
6. Clip the chassis frame onto the bead clamper, shown in Fig.6 / Fig.7.
7. After servicing replace the bead clamper and speaker, and ensure all wiring is returned to its original position before
returning the receiver to the customer.
Adjust the screen VR until the display shows "O.K."
SELF CHECK
Self-check is used to automatically check the bus lines and hexadecimal code of the TV set. To get into the Self-Check mode
press the down (-/v) button on the customer controls at the front of the set,at the same time pressing the STATUS
buttonon the remote control, and the screen will show :-
Self Check is also used to automatically check the bus lines and hexadecimal code of the TV set.If the CCU ports have
been checked and found to be incorrect or not located then " - - " will appear in place of "O.K.". For more in-depth TV
diagnostics use the LUCI interface as listed below.
PCBO.K.
CabO.K.
SumFactory use
only
Service Aids
To aid in the service of our current chassis there are a number of Service Aids which have been made available.
•LUCI interface kit (Linked Utility Computer Interface)
Part number: TZS6EZ002
This contains interface and cables for connecting TV service connector and a PC as well as diagnostic software. As new
models are introduced upgrade software will become available.
•VICI (Visual Interactive Computer Information)
These C.D.'s contain multimedia documentation providing quick access to service information.
Part No. TZS7EZ006 & TZS7EZ005
1. Service Manuals
2. Instruction Books
3. Technical Information
•TASMIN (Technically Advanced System for Multimedia Interactive Notes)
As well as providing a first step towards more interactive training this product also achieves quick access to Technical
Information.
5
WAVEFORM PATTERN TABLE
NOTE: All waveforms have been taken using a standard colour bar pattern.
Vert Out
IC601 Pin 1
0.6V
H - Out
IC601 Pin 8
3.9V
Luminance In
IC601 Pin 28
8.6ms
32µs
Vert Drive
IC451 Pin 2
63V
HFLB
IC601 Pin 13
7V
R - Y
IC601 Pin 26
8ms
32µs
VFLB
IC451 Pin 5
1V
8.6ms
Video In
IC1101 Pin 68
0.9V
64µs
B - Y
IC601 Pin 27
0.9V
R - Out
IC601 Pin 40
2.2V
H - Out
IC3901 Pin 3
6V
32µs
28µs
32µs
1V
G - Out
IC601 Pin 41
2.2V
V - Out
IC3901 Pin 21
0.1V
32µs
32µs
32µs
1.3V
32µs
B - Out
IC601 Pin 42
2.2V
32µs
E/W - Out
IC601 Pin 3
280mV
8.5ms
6
ALIGNMENT SETTINGS:
(The figures below are nominal and used for representative purposes only.)
1. Set the Bass to maximum position, set the Treble to minimum position, press the down button (- / v) on the customer
controls at the front of the TV and at the same time press the INDEX button on the remote control, this will place the TV
into the Service Mode.
2. Press the RED / GREEN buttons to step up / down through the functions.
3. Press the YELLOW / BLUE buttons to alter the function values.
4. Press the STR button after each adjustment has been made to store the required values.
5. To exit the Service Mode, press the "N" button.
Alignment FunctionSettings / Special features
Horizontal Position
Vertical Position
Horizontal Amplitude
Vert. Amplitude
EW-amplitude
EW-amplitude
Trapezium-comp
H-Pos
+020
V-Pos
+024
H-Amp
+049
V-Amp
+029
E/W-Amp1
+022
E/W-Amp2
+000
Trapez-1
+033
Optimum setting.
Optimum setting.
Optimum setting.
Optimum setting.
Optimum setting.
Optimum setting.
Optimum setting.
Horizontal-Parallel
Vertical Linearity
DVCO
Cut-off DC
HighlightHigh 0031 0031 0031
Sub-Brightness
H-Parallel
+032
V-Lin
+004
DVCO
000
Cut-off
O.K.
Sub-Brightness
000
Optimum setting.
Optimum setting.
Receive a PAL Colour Bar Pattern. For
DVCO alignment press "Blue" button, wait
until the colours are stable and press
"STR".
To adjust Cutoff adjust the screen VR until
the display shows "O.K."
ContrastMaximum
A.I.Off
Adjust for optimum setting.
Optimum setting.
7
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17
PARTS LOCATION
NOTE:
The numbers on the exploded view below
refer to the mechanical section of the
Replacement Parts List.
16
4
30
18
19
25
27
2
6
1
5
29
23
14
7
28
20
11
12
21
9
15
13
3
8
22
24
10
26
12
Components Identified by mark have spec ial characteristics important for safety.
* When replacing any of these components, use only manufacturers specified parts.
In case of ordering thes e spare parts, please always add the complete Model-Type
number to your order.
DescriptionCct RefParts NumberDescriptionCct RefParts Number
COMMON PARTS
MECHANICAL PARTS
LOUD SPEAKER 1EAB12146B
TWEETER SPEAKER 2EAS13KH14E
TUNER 3ENG29505G
REMOTE CONTROL 4EUR511220
POWER BUTTON 5TBXA19701
CRT FIXING SCREW 6THTA006Z
REAR AV PANEL 7TKP8E1253-3
RIGHT DOOR 8TKPA27904
LEFT DOOR 9TKPA28004
CHASSIS FRAME 10TMX8E034
N P.C.B. 11TNP8EN017AA
V P.C.B. 12TNP8EV003AA
G P.C.B. 13TNPA0877AB
H P.C.B. 14TNPA1047AC
F P.C.B. 15TNPA1068AA
POWER CORD 16TSX8E0028
BATTERY COVER (REMOTE) 17UR51EC904A
ANODE CABLE 18ZTBZAD550A
F.B.T. 19ZTFL77002A
MISCELLANEOUS COMPONENTS
IC SOCKET 832AG11D-ESL
84 PIN SOCKET PCS-084A-1
RUBBER TBL63413
AV PANEL LABEL TBM8E1940-1
LEFT INDICATION SHEET TBMU025-1
BADGE TBMU026
LID CATC H TEK6940
CRT EARTH SPRING TES2298
SCREW THT1062
SPEAKER NET SHEET TKNA005
SPEAKER NET TKNE020
INDICATOR PANEL TKPA27711
HANDLE TKRA13104
REMOTE CONTROL HOLDER TMWJ002
LED HOLDER TMWJ011
P.C.B. BRACKET TMX8E025
POWER BUTTON JOINT TMX8E035
BATTERY PACK UM-3DJ-2P
RELAY RL801 TSE1885-1
THERMISTOR R805 232266296706
FIX CLIP SOD1 31221212478
FIX CLIP SOD9 31221212478