Panasonic TX-34P300K / TX-34P300XM / TX-34P300XX Service Manual ▷ View online
2000
TX-34P300K
TX-34P300XM
TX-34P300XX
TX-34P300XM
TX-34P300XX
EURO7 Chassis
Colour Television
Specifications
Power Source
AC Auto 110-240 V, 50/60 Hz
Power Consumption
218 W
Stand-by condition 3.0 W
Receiving System
21 Systems
Function
1
PAL B, G, H
Reception of broadcast transmissions
and Playback from Video Cassette
Tape Recorders
and Playback from Video Cassette
Tape Recorders
2
PAL I
3
PAL D, K
4
SECAM B, G
5
SECAM D, K
6
SECAM K1
7
NTSC M (NTSC 3.58/4.5 MHz)
8
NTSC 4.43/5.5 MHz
Playback from Special VCR´s
9
NTSC 4.43/6.0 MHz
10
NTSC 4.43/6.5 MHz
11
NTSC 3.58/5.5 MHz
12
NTSC 3.58/6.0 MHz
13
NTSC 3.58/6.5 MHz
14
SECAM I
15
PAL 60 Hz/5.5 MHz
Playback from Special Disc Players
and Special VCR´s
and Special VCR´s
16
PAL 60 Hz/6.0 MHz
17
PAL 60 Hz/6.5 MHz
18
SECAM 60 Hz/5.5 MHz
19
SECAM 60 Hz/6.0 MHz
20
SECAM 60 Hz/6.5 MHz
21
NTSC 50 Hz/4.5 MHz
Receiving Channels
Regular TV
ORDER NO. ITD0012016C3
VHF BAND
UHF BAND
2-12 (PAL/SECAM B, K1)
21-69 (PAL G, H, I/SECAM G, K, K1)
0-12 (PAL B AUST.)
28-69 (PAL B AUST.)
1-9 (PAL B N.Z)
13-57 (PAL D, K)
1-12 (PAL/SECAM D)
13-62 (NTSC M Japan)
1-12 (NTSC M Japan)
14-69 (NTSC M U.S.A.)
2-13 (NTSC M U.S.A.)
CATV
S1-S20 (OSCAR)
1-125 (U.S.A. CATV)
C13-C49 (JAPAN)
S21-S41 (HYPER)
Z1-Z37 (CHINA)
4A, 9A (AUST.)
Receiving Stereo System
NICAM I, NICAM B/G, NICAM D, A2 (German)
Tuning System
Frequency synthesizer
Auto Search Tuning
POSITION
: 100 Position
DIRECT
: 125 Position
High Voltage
31.0 ± 1.0 kV at zero beam current
Picture Tube
Overall Picture tube measured diagonally
86 cm
Viewable Picture tube measured diagonally
80 cm
CRT Deflection
104°
Audio Output
64 W [ 2-way, 4-speakers ; 12 W + 12 W, AFB woofer ; 12 W External speakers
; 7 W + 7 W + 7 W + 7 W ] (10% THD)
; 7 W + 7 W + 7 W + 7 W ] (10% THD)
Headphones
3.5 mm Plug
Aerial Impedance
75
Ω
Unbalanced coaxial
Video/Audio/Component
Terminals
Terminals
AV 1, 2, 3, 4
S-Video In
Y:1 Vp-p, 75
Ω
C:0.3 Vp-p, 75
Ω
DVD (Y/P
B
/P
R
)
Video In
1 Vp-p, 75
Ω
Audio In
Approx. 0.4 V 47K
Ω
Monitor Out
Video Out
1 Vp-p, 75
Ω
Audio Out
Approx. 0.4 V 1K
Ω
AV1 IN(Rear) : S-Video, Video, Audio L/R terminals
AV2 IN(Rear) : Video or Y/P
B
/P
R
, Audio L/R terminals
AV3 IN(Front) : S-Video, Video, Audio L/R RGB terminals
AV4 IN(Rear) : Video or Y/P
B
/P
R
, Audio L/R terminals
Digital Audio input : coaxial, optical
RGB input
High-DENSITY D-sub 15 pin
31.5 kHz / 60 Hz (640 × 480 dot) and 31.5 kHz / 70 Hz (640 × 400 dot)
Remote control Transmitter
R6 (AA) Battery × 2
75
Ω
coaxial aerial plug
Dimensions (W × D × H)
762 mm × 558 mm × 706 mm
Weight (Mass)
74 kg (Net)
Note:
Design and Specifications are subject to change without notice. Weight and Dimensions shown are approximate.
2
TX-34P300K / TX-34P300XM / TX-34P300XX
1 Safety Precautions
4
1.1. General Guide
4
1.2. Leakage Current Cold Check
4
1.3. Leakage Current Hot Check
4
1.4. X-Radiation
5
2 SERVICE HINTS
6
2.1. HOW TO REMOVE THE REAR COVER
6
2.2. LOCATION OF CONTROLS
6
2.3. HOW TO MOVE THE CHASSIS INTO SERVICE
POSITION
6
2.4. Hotel Mode
7
2.5. Service position For DG-Board.
7
3 Self Check
8
4 Service Mode Function
9
4.1. Howto enter SERVICE 1
9
4.2. Howto enter SERVICE 2
9
4.3. Option Descrition
10
5 Adjustment Procedure
13
5.1. Voltage Confirmation
13
5.2. E.H.T Check
13
5.3. Sub Contrast
13
5.4. Sub Tint
14
5.5. Sub Colour
15
5.6. SECAM BLACK LEVEL
15
5.7. VRS Adjustment
16
5.8. Colour Purity
17
5.9. Convergence
17
5.10. CUT OFF
18
5.11. White Balance
19
5.12. Foucus
19
5.13. Geomagnetic
19
5.14. Sub Bright
19
6 Deflection Adjustment
20
6.1. V-ADJUSTMENT/CONFIRMATION (4:3 MODE)
20
6.2. H-DEFLECTION CONFIRMATION/ADJUSTMENT (4:3
MODE)
21
6.3. PINCUSSION ADJUSTMENT/CONFRMATION (4:3
MODE)
22
6.4. V LINIALITY ADJUSTMENT / CONFIRMATION (4:3
MODE)
24
6.5. DEFLECTION (16:9 MODE) ADJUSTMENT /
CONFIRMATION
24
6.6. 525p DEFLECTION ADJUSTMENT / CONFIRMATION 25
6.7. 625p DEFLECTION ADJUSTMENT
25
6.8. VGA480 / 60Hz DEFLECTION ADJUSTMENT /
CONFIRMATION
26
6.9. VGA400 / 70Hz DEFLECTION ADJUSTMENT /
CONFIRMATION
27
6.10. Table 1
28
7 Location of Lead Wring
29
8 Conductor Views
31
8.1. A-Board
31
8.2. D-Board
34
8.3. DG-Board
36
8.4. DP-Board
38
8.5. GK-Board
39
8.6. DF-Board and GM-Board
40
8.7. H-Board and L-Board
41
8.8. U-Board and Z-Board
42
9 Block Diagram
43
9.1. Power Block Diagram
43
9.2. Control Block Diagram
45
9.3. Audio Block Diagram
46
9.4. Video Block Diagram
48
9.5. IC Block Diagram
49
10 Schematic Diagrams
55
10.1. Schematic Diagram Notes
55
10.2. A-Board (1/5) Schematic Diagrams
56
10.3. A-Board (2/5) Schematic Diagrams
57
10.4. A-Board (3/5) Schematic Diagrams
58
10.5. A-Board (4/5) Schematic Diagrams
59
10.6. A-Board (5/5) Schematic Diagrams
60
10.7. D-Board (1/2) Schematic Diagrams
61
10.8. D-Board (2/2) Schematic Diagrams
62
10.9. DF-Board Schematic Diagrams
63
10.10. DG-Board (1/4) Schematic Diagrams
64
10.11. DG-Board (2/4) Schematic Diagrams
65
10.12. DG-Board (3/4) Schematic Diagrams
66
10.13. DG-Board (4/4) Schematic Diagrams
67
10.14. DP-Board (1/2) Schematic Diagrams
68
10.15. DP-Board (2/2) Schematic Diagrams
69
10.16. GK-Board Schematic Diagrams
70
10.17. GM-Board Schematic Diagrams
71
10.18. H-Board Schematic Diagrams
72
10.19. L-Board (1/2) Schematic Diagrams
73
10.20. L-Board (2/2) Schematic Diagrams
74
10.21. U-Board (1/2) Schematic Diagrams
75
10.22. U-Board (2/2) Schematic Diagrams
76
10.23. Z-Board (1/2) Schematic Diagrams
77
10.24. Z-Board (2/2) Schematic Diagrams
78
11 Parts Location
79
12 Mechanical Replacement Parts List
80
CONTENTS
Page
Page
3
TX-34P300K / TX-34P300XM / TX-34P300XX
13 Replacement Parts List
81
13.1. Replacement Parts List Notes
81
1 Safety Precautions
1.1.
General Guide
1. It is advisable to insert an isolation transformer in the AC
supply before servicing a hot chassis
2. When servicing, observe the original lead dress, especially
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.
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.
isolation R-C combinations, are properly installed.
4. When the receiver is not to be used for a long period of
time, unplug the power cord from the AC outlet.
5. Potential, as high as 32.0 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 voltage
equipment. Always discharge the anode of the picture tube
to the receiver chassis before handling the tube.
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 voltage
equipment. Always discharge the anode of the picture 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.
hazards.
1.2.
Leakage Current Cold Check
1. Unplug the AC cord and connect a jumper between the two
prongs on the plug.
2. Turn on the receiver’s power switch.
13.2. Electrical Replacement Parts List
82
3. Measure the resistance value, with an ohmmeter, between
the jumpered AC plug and each exposed metallic cabinet
part on the receiver, such as screwheads, aerials,
connectors, control shafts, etc. When the exposed metallic
part has a return path to the chassis, the reading should be
between 4 M
part on the receiver, such as screwheads, 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
Ω
Ω
Ω
and 20 M
Ω
Ω
Ω
Ω
.
When the exposed metal does not have a return path to the
chassis, the reading must be.
chassis, the reading must be.
1.3.
Leakage Current Hot Check
1. Plug the AC cord directly into the AC outlet.
Do not use an isolation transformer for this check.
2. Connect a 2 k
Ω
, 10W resistor, in series with an exposed
metallic part on the receiver and an earth such as a water
pipe.
pipe.
3. Use an AC voltmeter, with high impedance type, to
measure the potential across the resistor.
4. Check each exposed metallic part, and measure the
voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of 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.
is a possibility of a shock hazard, and the receiver should
be repaired and rechecked before it is returned to the
customer.
4
TX-34P300K / TX-34P300XM / TX-34P300XX