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TOSHIBA 2163 DB 1
AUTOMATIC DEGAUSSING 8. Check the purity of the red and blue raster. wedge in either upper space. Remove cover
General Information paper and stick the wedge on picture tube to Service Mode
A degaussing coil is mounted around the picture fix the yoke.
tube so that external degaussing after moving 7. Detach the temporarily mounted wedge and 1. ENTERING TO SERVICE MODE
C6S Chassis the receiver is normally unnecessary, providing put it in another upper space. Stick it on
the receiver is properly degaussed upon picture tube to fix the yoke. 1) Press button once on Remote Control.
installation. The degaussing coil operates for 8. After fixing three wedges, recheck overall
about 1 second after the power to the receiver is convergence. Tighten the screw firmly to fix
receiver should be supplied via a suitable switched ON. If the set is moved or faced in a the yoke and check the yoke is firm.
Safety Instructions isolating transformer of adequate rating. different direction, the power switch must be
switched off at least 30 minutes in order that the
9. Stick three adhesive tapes on wedges as
shown in figure 1.
4. Replace blown fuses within the receiver with
the fuse specified in the parts list. automatic degaussing circuit operates properly. Sound Mute
WARNING: BEFORE SERVICING THIS Should the chassis or parts of the cabinet
5. When replacing wires or components to
CHASSIS, READ THE "X-RAY RADIATION become magnetized to cause poor colour purity,
terminals or tags, wind the leads around the
PRECAUTION", "SAFETY PRECAUTION" AND use an external degaussing coil. Slowly move 2) Press button again to keep pressing.
terminal before soldering. When replacing
"PRODUCT SAFETY NOTICE" INSTRUCTIONS the degaussing coil around the faceplate of the
safety components identified by the interna-
BELOW. picture tube, the sides and front of the receiver
tional hazard symbols on the circuit diagram
and parts list, it must be a Toshiba approved and slowly withdraw the coil to a distance of
X-RAY RADIATION PRECAUTION about 2 m before disconnecting it from AC
type and must be mounted as the original.
6. Keep wires away from high temperature source. If colour shading still persists, perform
1. The E.H.T. must be checked every time the the COLOUR PURITY ADJUSTMENT and
receiver is serviced to ensure that the C.R.T. CONVERGENCE ADJUSTMENTS procedures.
does not emit X-ray radiation as result of
excessive E.H.T. voltage. The nominal E.HT. PRODUCT SAFETY NOTICE
HIGH VOLTAGE CHECK 3) Keep pressing the button, press MENU
for this receiver is 28.1 kV at zero beam
Many electrical and mechanical components in button on TV set.
current (minimum brightness) operating at
this chassis have special safety-related CAUTION: There is no HIGH VOLTAGE
220V a.c. The maximum E.H.T. voltage
characteristics. These characteristics are often ADJUSTMENT on this chassis. RCUT S
permissible in any operating circumstances
passed unnoticed by a visual inspection and the 40H
must not exceed 29.5 kV. When checking the
X-ray radiation protection afforded by them 1. Connect an accurate high voltage meter to
E.H.T., use the `High Voltage Check' proce-
cannot necessarily be obtained by using the second anode of the picture tube.
dure in this manual using an accurate E.H.T.
replacements rated at higher voltages or 2. Turn on the receiver. Set the BRIGHTNESS
wattage, etc. Components which have these and CONTRAST Controls to minimum (zero
2. The only source of X-RAY radiation in this
special safety characteristics in this manual and beam current).
receiver is the C.R.T. To prevent X-ray
its supplements are identified by the interna- 3. High voltage will be measured below 29.5 kV. 2. DISPLAYING THE ADJUSTMENT MENU
radiation, the replacement C.R.T. must be Fig. 1
tional hazard symbols on the schematic 4. Rotate the BRIGHTNESS Control to both Press MENU button on TV.
identical to the original fitted as specified in
diagram and parts list. Before replacing any of extremes to be sure the high voltage does not
the Parts List. CONVERGENCE ADJUSTMENTS
these components read the parts list in this exceed the limit of 29.5 kV under any Adjustment mode Normal operation mode
3. Some components used in this receiver have Fig. 2
manual carefully. Substitute replacement conditions.
safety related characteristics preventing the NOTE: Before attempting any convergence
components which do not have the same safety RCUT Address Press S
C.R.T. from emitting X-ray radiation. For adjustments, the receiver should be operated for Centre Convergence by Convergence
continued safety, replacement component characteristics as specified in the parts list may FOCUS ADJUSTMENT 40H Data
create X-ray radiation. at least fifteen minutes. Magnets
should only be made after referring the
Product Safety Notice below. Adjust FOCUS Control on FLYBACK TRANS. Press
(T461) for well defined scanning lines in the CENTRE CONVERGENCE ADJUSTMENT
centre area on the screen. 3. SELECTING THE ADJUSTING ITEMS
SAFETY PRECAUTION Installation and Service 1. Use the cross-dot pattern from among the Every pressing of CHANNEL v button changes
built-in test signals. the adjustment items in the following order.
1. This receiver has a nominal working E.H.T. Adjustments Set-up Adjustment
2. Set the brightness and contrast for well (w button for reverse order.)
voltage of 26.0 kV. Extreme caution should be defined pattern.
exercised when working on the receiver with The following adjustments should be made
GENERAL INFORMATION when a complete realignment is required or a 3. Adjust two tabs of the 4-Pole Magnets to 4. ADJUSTING THE DATA
the back removed. Do not attempt to service change the angle between them (See figure
new picture tube is Pressing of VOLUME v or w button will change
this receiver if you are not conversant with the 2.) and superimpose red and blue vertical
All adjustments are thoroughly checked and installed. the value of data in the range from 00 to FF. The
precautions and procedures for working on lines in the centre area of the picture screen.
corrected when the receiver leaves the factory. Perform the adjustments in order as follows variable range depends on the adjusting item.
high voltage equipment. When handling or 4. Turn the both tabs at the same time keeping
Therefore the receiver should operate normally 1. Color Purity
working on the C.R.T., always discharge the the angle constant to superimpose red and
and produce proper colour and B/W pictures 2. Convergence 5. EXIT FROM SERVICE MODE
anode to the receiver chassis before remov- blue horizontal lines at the center of the
upon installation. However, several minor 3. White Balance Press POWER button to turn off the TV once.
ing the anode cap. The C.R.T., if broken, will screen.
adjustments may be required depending on the
violently expel glass fragments. Use shatter 5. Adjust two tabs of 6-Pole Magnets to superim-
particular location in which the receiver is Note: The PURITY/CONVERGENCE MAGNET
proof goggles and take extreme care while pose red/blue line and green one. Adjusting
operated. assembly and rubber wedges need mechanical
handling. Do not hold the C.R.T. by the neck the angle affects the vertical lines and rotating
This receiver is shipped completely in card- positioning. Refer to figure 1.
as this is a very dangerous practice. both magnets affects the horizontal lines.
board carton. Carefully draw out the receiver
2. It is essential that to maintain the safety of the 6. Repeat adjustments 3, 4, 5 keeping in mind
from the carton and remove all packing COLOR PURITY ADJUSTMENT
customer all cable forms be replaced exactly red, green and blue movement, because 4-
materials. Plug the power cord into a conven-
as supplied from factory. Pole Magnets and 6-Pole Magnets have
ient 220 volts 50 Hz AC two pin power outlet. NOTE: Before attempting any purity adjust-
3. A small part of the chassis used in this mutual interaction and make dot movement
Turn the receiver ON. Check and adjust all the ments, the receiver should be operated for at
receiver is, when operating, at approximately complex.
customer controls such as BRIGHTNESS, least fifteen minutes.
half mains potential at all times. It is therefore
CONTRAST and COLOUR Controls to obtain
essential in the interest of safety that when CIRCUMFERENCE CONVERGENCE
natural colour or B/W picture. 1. Demagnetize the picture tube and cabinet
serving or connecting any test equipment the ADJUSTMENT
using a degaussing coil.
2. Set the brightness and contrast to maximum.
3. Use a green raster from among the built-in 1. Loosen the clamping screw of deflection yoke
slightly to allow the yoke to tilt.
Recommended Safety Parts test signals. See page 12.
4. Loosen the clamp screw holding the yoke and 2. Temporarily put a wedge as shown in figure 1.
slide the yoke backward or forward to provide (Do not remove cover paper on adhesive part
Item Part No. Description vertical green belt (zone) in the picture of the wedge.)
L462 DY, Supplied with V901 screen. 3. Tilt front of the deflection yoke up or down to
L901 23200205 Coil, Degaussing, TSB-2333AR 5. Remove the Rubber Wedges. obtain better convergence in circumference.
T401 23224983 Transformer, Horiz. Drive,TLN1039
6. Rotate and spread the tabs of the purity (See figure 3.) Push the mounted wedge into
T461 23236510 Transformer, Flyback, TFB4123BE the space between picture tube and the yoke
T801 23211858 Line Filter, TRF3139 magnet (See figure 2.) around the neck of the
T862 23217346 Transformer, Converter, TPW3365AR picture tube until the green belt is in the to fix the yoke temporarily.
Q404 23314375 Transistor, 0N4409(508D) center of the screen. At the same time, enter 4. Put other wedge into bottom space and
Q862 A8643108 Photo Coupler, TLP621(GR-LF) remove the cover paper to stick.
F470 23144501 Fuse, 0.8A the raster vertically.
F801 23144507 Fuse, 3.15A 7. Slowly move the yoke forward or backward 5. Tilt front of the yoke right or left to obtain
P801 23372012 Power Cord until a uniform green screen is obtained. better convergence in circumference. (See
F801 23344395 Switch, Power
Tighten the clamp screw of the yoke tempo- figure 3.)
V901A 23902067 Socket, CRT, 10P 6. Keep the yoke position and put another Fig. 3. Dot Movement Pattern
V901 23312670 Picture Tube, A51EAL155X01 rarily.
Safety Instuctions / Installation & Service Adjustments / Adjustments Cont'd / Safety Parts / Service Mode / Electrical Adjustments ...Cont'd
AV Diagram / Differences Table / Main Diagram / Text Diagram / CRT Diagram
TOSHIBA 2163 DB 2
Signals: ITEM: To correct white balance in light area, select Item: Slave address 36 [BRTC]
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