Read Panasonic TX-32LXD50 / TX-26LXD50 / TX-32LX50F / TX-32LX50P / TX-26LX50F / TX-26LX50P Service Manual online
TX-32LXD50
TX-26LXD50
TX-32LX50F
TX-32LX50P
TX-26LX50F
TX-26LX50P
TX-26LXD50
TX-32LX50F
TX-32LX50P
TX-26LX50F
TX-26LX50P
LH41 Chassis
Wide LCD TV
Specifications
Power Source
AC 220 - 240 V, 50 / 60 Hz
Power Consumption
Average use : 133 W (0.78 A) (TX-26LXD50)
Average use : 169 W (0.98 A) (TX-32LXD50)
Standby condition :
0.1 W (Without DVB Timer programmes)
11W (With DVB Timer programmes)
Average use : 126 W (TX-26LX50F/P)
Average use : 161 W (TX-32LX50F/P)
Standby condition : 0.4 W
LCD
Wide XGA (1,366 × 768 pixels)
16 : 9 aspect ratio LCD panel
Screen Size
575.8 mm (W) × 323.7 mm (H) (TX-26LXD50, TX-26LX50F/P)
697.7 mm (W) × 392.3 mm (H) (TX-32LXD50,TX-32LX50F/P)
Sound
Speaker
Woofer Ø8 cm × 2 pcs, Full range Ø5 cm ×2pcs
Audio Output
20 W (5.4 W + 5.4 W, 4.6 W + 4.6 W )
Headphones
M3 (3.5 mm) Jack × 1
Scanning format
480i(60Hz), 480p(60Hz), 576i(50Hz), 576p(50Hz), 720p(50Hz), 1080i(50Hz)
Receiving Systems /
PAL I (TX-26LXD50/32LXD50)
UHF E21-68.
Band name
DVB (TX-26LXD50/32LXD50)
Digital terrestrial services via UHF aerial input.
PAL B, G, H, SECAM B, G SECAM L / L’ (TX-26LX50F/P, TX-32LX50F/P)
VHF E2 - E12
VHF H1 - H2 (ITALY)
VHF A - H (ITALY)
UHF E21 - E69
CATV (S01 - S05)
CATV S1 - S10 (M1 - M10)
ORDER NO. PCZ0503
030C2
1 Safety Precautions
4
1.1.
General Guidelines
4
1.2.
Touch-Current Check
4
2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
5
3 Applicable signals
5
4 Self Check Function
6
4.1.
Self Check
6
4.2.
Power LED Blinking timing chart
7
5 Chassis Board Layout
8
6 Before servicing
9
6.1.
Kind and location of the flexible cable and bridge cable 9
6.2.
How to remove the connector
10
6.3.
Wire dressing 1
11
6.4.
Wire dressing 2
12
7 Servicing method
13
7.1.
Removing the stand assｴy
13
7.2.
Removing the rear cover
13
7.3.
Removing the speaker box L and R
13
7.4.
Removing the rear AV bracket
14
7.5.
Removing the rear metal frame
14
7.6.
Removing the P-Board
14
7.7.
Removing the XV-Board (For LXD50 model only)
14
7.8.
Removing the DG-Board
15
7.9.
Removing the AP-Board
15
7.10. Removing the H-Board
15
7.11. Removing G-Board bracket
15
7.12. Removing the G-Board
16
CATV S11 - S20 (U1 - U10)
CATV S21 - S41 (Hyperband)
PAL D, K, SECAM D, K (TX-26LX50F/P, TX-32LX50F/P)
VHF R1 - R2
VHF R3 - R5
VHF R6 - R12
UHF E21 - E69
PAL 525/60
Playback of NTSC tape from some PAL Video re cord
ers (VCR)
ers (VCR)
M.NTSC
Playback from M. NTSC Video recorders (VCR)
NTSC (AV input only)
Playback from NTSC Video recorders (VCR)
Aerial - Rear
UHF (TX-26/32LXD50) UHF/VHF (TX-26/32LX50F/P)
Operating Conditions
Temperature : 5 °C - 35 °C
Humidity : 5 % - 90 % RH (non-condensing)
Connection Terminals
AV1 (Scart connecter)
21 Pin terminal (Audio/Video in, Audio/Video out, RGB in)
AV2 (Scart connecter)
21 Pin terminal (Audio/Video in, Audio/Video out, S-Video in, Q-Link)
AV3
VIDEO
RCA PIN Type × 1
S-VIDEO
Mini DIN 4-pin
AUDIO L - R
RCA PIN Type × 2
AV4 (Scart connecter)
21 Pin terminal (Audio/Video in, Audio/Video out, RGB in, S-Video in, Q-Link)
COMPONENT
VIDEO
Y, P B, PR
AUDIO L - R
RCA PIN Type × 2
Output
AUDIO L - R
RCA PIN Type × 2
Dimensions ( W × H × D )
Including TV Stand
663 mm × 556 mm × 299.5 mm (TX-26LXD50, TX-26LX50F/P)
795 mm × 634.7 mm × 299.5 mm (TX-32LXD50, TX-32LX50F/P)
TV Set Only
663 mm × 494.3 mm × 140.7 mm (TX-26LXD50, TX-26LX50F/P)
795 mm × 573 mm × 140.7 mm (TX-32LXD50, TX-32LX50F/P)
Mass (Weight)
18 kg Net (TX-26LXD50, TX-26LX50F/P)
21 kg Net (TX-32LXD50, TX-32LX50F/P)
CONTENTS
Page
Page
2
TX-32LXD50 / TX-26LXD50 / TX-32LX50F / TX-32LX50P / TX-26LX50F / TX-26LX50P
7.13. Removing the K-Board
16
7.14. Removing the V-Board
16
7.15. Removing the main chassis
16
7.16. Removing the LCD panel
17
8 Service Mode Function
18
8.1.
How to enter SERVICE 1
18
8.2.
How to enter SERVICE 2
18
8.3.
Option Description
21
8.4.
Option Code Setting
23
9 Adjustment method
24
9.1.
White Balance Adjustment
24
10 Block Diagram
25
10.1. Signal (1/3) Block Diagram
25
10.2. Signal (2/3) Block Diagram
26
10.3. Signal (3/3) Block Diagram
27
10.4. Power (1/3) Block Diagram
28
10.5. Power (2/3) Block Diagram
29
10.6. Power (3/3) Block Diagram
30
11 Schematic Diagram
31
11.1. Schematic Diagram Notes
31
11.2. AP-Board (1/2) and K-Board Schematic Diagram
32
11.3. AP-Board (2/2) Schematic Diagram
33
11.4. XV-Board (1/5) Schematic Diagram
34
11.5. XV-Board (2/5) Schematic Diagram
35
11.6. XV-Board (3/5) Schematic Diagram
36
11.7. XV-Board (4/5) Schematic Diagram
37
11.8. XV-Board (5/5) Schematic Diagram
38
11.9. H-Board (1/3) Schematic DIagram
39
11.10. H-Board (2/3) Schematic Diagram
40
11.11. H-Board (3/3) Schematic Diagram
41
11.12. DG-Board (1/6) Schematic Diagram
42
11.13. DG-Board (2/6) Schematic Diagram
43
11.14. DG-Board (3/6) Schematic Diagram
44
11.15. DG-Board (4/6) Schematic Diagram
45
11.16. DG-Board (5/6) Schematic Diagram
46
11.17. DG-Board (6/6) Schematic Diagram
47
11.18. G-Board and V-Board Schematic Diagram
48
12 Printed Circuit Board
49
12.1. AP-Board
49
12.2. XV-Board (TX-26/32LXD50 only)
51
12.3. H-Board
53
12.4. DG-Board
56
12.5. G-Board
59
12.6. K-Board and V-Board
60
13 Exploded View and Replacement Parts List.
61
13.1. Set Layout
61
13.2. Front Chassis Layout
62
13.3. Packing Exploded View
63
13.4. Mechanical Replacement Parts List
64
14 Electrical Replacement Parts List
66
14.1. Electrical Replacement Parts List Notes
66
14.2. Electrical Replacement Parts List (TX-32/26LXD50)
67
14.3. Electrical Replacement Parts List (TX-32/26LX50F/P) 85
3
TX-32LXD50 / TX-26LXD50 / TX-32LX50F / TX-32LX50P / TX-26LX50F / TX-26LX50P
1.2. Touch-Current Check
1 Safety Precautions
1.1. General Guidelines
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
3. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a measuring network for touch currents between each exposed metallic part on the set and a good earth ground such
2. Connect a measuring network for touch currents between each exposed metallic part on the set and a good earth ground such
as a water pipe, as shown in Figure 1.
3. Use Leakage Current Tester (Simpson 228 or equivalent) to measure the potential across the measuring network.
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reserve the AC plug in the AC outlet and repeat each of the above measure.
6. The potential at any point (TOUGH CURRENT) expressed as voltage U
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reserve the AC plug in the AC outlet and repeat each of the above measure.
6. The potential at any point (TOUGH CURRENT) expressed as voltage U
1
and U
2
, does not exceed the following values:
For a. c.: U
1
= 35 V (peak) and U
2
= 0.35 V (peak);
For d. c.: U
1
= 1.0 V,
Note:
The limit value of U
2
= 0.35 V (peak) for a. c. and U
1
= 1.0 V for d. c. correspond to the values 0.7 mA (peak) a. c. and 2.0
mA d. c.
The limit value U
The limit value U
1
= 35 V (peak) for a. c. correspond to the value 70 mA (peak) a. c. for frequencies greater than 100 kHz.
7. In case a measurement is out of the limits specified, there is a possibility of a shock hazard, and the equipment should be
repaired and rechecked before it is returned to the customer.
Figure 1
4
TX-32LXD50 / TX-26LXD50 / TX-32LX50F / TX-32LX50P / TX-26LX50F / TX-26LX50P
