Panasonic TC-29V10N Service Manual ▷ View online
Video / Audio Terminals:
AV1,2,3
S-Video IN
Y:1.0 Vp-p 75
Ω
C:0.3 Vp-p 75
Ω
Video IN
1 Vp-p 75
Ω
Audio IN
0.5 Vrms
Monitor Out
Video Out
1 Vp-p 75
Ω
Audio Out
0.5 Vrms
Picture Tube:
M68KTY131X
Type29 (73 cm)
104
Type29 (73 cm)
104
°
deflection
Audio Output:
15W (5W+5W+5W)(10% THD)
Headphones:
3.5 mm Plug
Dimensions (W
×
D
×
H):
698 mm
×
492 mm
×
570 mm
Mass:
41.0 kg (Net)
Accessories Supplied:
Remote Controller
×
1
“R6” Battery
×
2
Specifications are subject to change without notice.
Mass and dimensions shown are approximate.
Mass and dimensions shown are approximate.
Specifications
Power Source:
AC110 V, 60 Hz
Power Consumption:
129W
Stand-by condition 0.4W
Stand-by condition 0.4W
Aerial Impedance:
75
Ω
unbalanced,
Coaxial type
Receiving system:
NTSC STANDARD
Tuning System:
Voltage Synthesizer
100 position (Auto Search)
100 position (Auto Search)
Receiving Channels:
2-13 (NTSC M U.S.A.)
14-69 (NTSC M U.S.A.)
CATV
1-125 (U.S.A. CATV)
Intermediate Frequency:
Video
45.75 MHz
Sound
41.25 MHz
Color
42.17 MHz
High Voltage:
31.0 ± 1.0 kV
at zero beam current
at zero beam current
ORDER NO.ITD9909029C3
Color Television
TC-29V10N
GL3 Chassis
!"#
- 2 -
Contents
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cover
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
In regard to the self-check function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Servicing method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Service Adjustment Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Contents of Service Adjustment Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Conductor Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Parts Location & Mechanical Replacement Parts List . . . . . . . . . . . . . . . . . . . 36
Replacement Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
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- 3 -
Safety Precautions
General Guide Lines
1.
It is advisable to insert an isolation transformer in the AC
supply before servicing a hot chassis.
supply before servicing a hot chassis.
2.
When servicing, observe the original lead dress, espe-
cially the lead dress in the high voltage circuits.
If a short circuit is found, replace all parts which have
been overheated or damaged by the short circuit.
cially the lead dress in the high voltage circuits.
If a short circuit is found, replace all parts which have
been overheated or damaged by the short circuit.
3.
After servicing, see to it that all the protective devices
such as insulation barriers, insulation papers, shields,
and isolation R-C combinations, are properly installed.
such as insulation barriers, insulation papers, shields,
and isolation R-C combinations, are properly installed.
4.
When the receiver is not be used for a long period of
time, unplug the power cord from the AC outlet.
time, unplug the power cord from the AC outlet.
5.
Potential, as high as
31.0 kV
, is 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 thoroughly familiar with
the precautions necessary when working on high volt-
age equipment. Always discharge the anode of the pic-
ture tube to the receiver chassis before handling the
tube.
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 thoroughly familiar with
the precautions necessary when working on high volt-
age equipment. Always discharge the anode of the pic-
ture tube to the receiver chassis before handling the
tube.
6.
After servicing make the following leakage current
checks to prevent the customer from being exposed to
shock hazards.
checks to prevent the customer from being exposed to
shock hazards.
Leakage Current Cold Check
1.
Unplug the AC cord and connect a jumper between the
two prongs on the plug.
two prongs on the plug.
2.
Turn on the receiver’s power switch.
3.
Measure the resistance value, with an ohmmeter,
between the jumpered AC 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 4 M
between the jumpered AC 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 4 M
Ω
and 20 M
Ω
.
When the exposed metal does not have a return path to
the chassis, the reading must be
the chassis, the reading must be
∞
.
Leakage Current Hot Check
1.
Plug the AC cord directly into the AC outlet. Do not use
an isolation transformer for this check.
an isolation transformer for this check.
2.
Connect a 2k
Ω
, 10W resistor, in series with an exposed
metallic part on the receiver and an earth such as a
water pipe.
water pipe.
3.
Use an AC voltmeter, with high impedance type, to mea-
sure the potential across the resistor.
sure the potential across the resistor.
4.
Check each exposed metallic part, and measure the
voltage at each point.
voltage at each point.
5.
Reverse the AC plug in the AC outlet and repeat each of
the above measurements.
the above measurements.
6.
The potential at any point should not exceed
1.0 Vrms
.
In case a measurement is outside of 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.
there is a possibility of a shock hazard, and the receiver
should be repaired and rechecked before it is returned to
the customer.
Isolation Transformer
power-on
Hot-Check Circuit
AC Voltmeter
To
Instrument's
Metallic Parts
Exposed
Instrument's
Metallic Parts
Exposed
Water Pipe
(Earth)
(Earth)
2 k
W
10W
# !"
- 4 -
X-Radiation
Warning :
1.
The potential sources of X-Radiation in TV sets are the
High Voltage section and the picture tube.
High Voltage section and the picture tube.
2.
When using a picture tube test jig for service, ensure
that jig is capable of handling
that jig is capable of handling
31.0kV
without causing X-
Radiation.
Note:
It is important to use an accurate periodically cali-
brated high voltage meter.
brated high voltage meter.
1.
Set the brightness to minimum.
2.
Measure the High Voltage. The meter reading should
indicate
indicate
31.0 ± 1.0 kV
. If the meter indication is out of
tolerance, immediate service and correction is required
to prevent the possibility of premature component fail-
ure.
to prevent the possibility of premature component fail-
ure.
3.
To prevent an X-Radiation possibility, it is essential to
use the specified picture tube.
use the specified picture tube.
$ !"