Read Panasonic TX-32LX600F / TX-32LX600P / TX-26LX600F / TX-26LX600P Service Manual online
Service Manual
Colour LCD Television
TX-32LX600F
TX-32LX600P
TX-26LX600F
TX-26LX600P
LH50 Chassis
Specifications
(Informations in brackets [ ] refers to models 26´´)
Power Source:
220-240V AC, 50/60Hz
Power Consumption
136W TX-32LX600F
169W TX-32LX600P
82W TX-26LX600F
118W TX-26LX600P
169W TX-32LX600P
82W TX-26LX600F
118W TX-26LX600P
Stand-by Power Consumption: 0,4W
Aerial Impedance:
Aerial Impedance:
75
Ω unbalanced, Coaxial Type
Receiving System:
PAL-I, B/G, H, D/K,
SECAM B/G, D/K, L/L’
PAL-525/60, M.NTSC, NTSC (AV only)
SECAM B/G, D/K, L/L’
PAL-525/60, M.NTSC, NTSC (AV only)
Receiving Channels:
VHF E2-E12
VHF H1-H2 (ITALY)
VHF A-H (ITALY)
VHF R1-R2
VHF R3-R5
VHF R6-R12
UHF E21-E69
CATV (S01-S05)
CATV S1-S10 (M1-M10)
CATV S11-S20 (U1-U10)
CATV S21-S41 (Hyperband)
Operating Conditions:
Temperature:
0°C
÷ 35°C
Scanning format:
480i(60Hz), 480p(60Hz), 576i(50Hz), 576p(50Hz), 720p(60Hz), 720p(50Hz), 1.080i(60Hz),
1.080i(50Hz)
1.080i(50Hz)
PC signals:
VGA, SVGA, XGA
SXGA(compressed)
Horizontal scanning frequency
SXGA(compressed)
Horizontal scanning frequency
31 – 69 kHz
Vertical scanning frequency
59 – 86 Hz
Intermediate Frequency:
Video/Audio
Video
Video/Audio
Video
38,9MHz, 33,9MHz
Audio
33,4MHz (B/G), 33,16MHz (A2)
33,05MHz (NICAM B/G, D/K, L)
32,4MHz (D/K), 32,66MHz (CZ STEREO)
40,4MHz (L’), 39,75Mhz (L’NICAM),
33,05MHz (NICAM B/G, D/K, L)
32,4MHz (D/K), 32,66MHz (CZ STEREO)
40,4MHz (L’), 39,75Mhz (L’NICAM),
Colour
34,47MHz (PAL)
34,5MHz, 34,65MHz (SECAM)
38,3MHz, 38,15MHz (SECAM L’)
34,5MHz, 34,65MHz (SECAM)
38,3MHz, 38,15MHz (SECAM L’)
Terminals:
AV1 IN
AV1 IN
Video (21 pin) 1V p-p 75
Ω
Audio (21 pin) 500mV rms 10k
Ω
RGB (21 pin) 0,7V p-p 75
Ω
ORDER No. PCZ0608056CE
AV1 OUT
Video (21 pin) 1V p-p 75
Ω
Audio (21 pin) 500mV rms 1k
Ω
AV2 IN
Video (21 pin) 1V p-p 75
Ω
Audio (21 pin) 500mV rms 10k
Ω
S-video IN (21-pin)Y: 1V p-p 75
Ω
C:0,3V p-p 75
Ω
AV2 OUT
Video (21 pin) 1V p-p 75
Ω
Audio (21 pin) 500mV rms 1k
Ω
AV3 IN
Video (21 pin) 1V p-p 75
Ω
Audio (21 pin) 500mV rms 10k
Ω
RGB (21 pin) 0,7V p-p 75
Ω
S-video IN (21-pin)Y: 1V p-p 75
Ω
C:0,3V p-p 75
Ω
AV3 OUT
Video (21 pin) 1V p-p 75
Ω
Audio (21 pin) 500mV rms 1k
Ω
AV4 IN
S-Video IN (4-pin) Y: 1V p-p 75
Ω
C:0,3V p-p 75
Ω
Audio (RCAx2) 500mV rms 10k
Ω
Video (RCAx1) 1V p-p 75
Ω
HDMI1, HDMI2
Type A Connector
COMPONENT YUV
Video (RCAx3) Y:1V p-p 75
Ω
Pb, Pr: 0,7V p-p 75
Ω
AUDIO IN
Audio (RCAx2) 500mV rms 10k
Ω
AUDIO OUT
Audio (RCAx2) 500mV rms 1k
Ω
PC
HIGH-DENSITY D_SUB 15PIN
CARD SLOT
SD CARD slot x1
LCD screen:
L5EDD8Q00025
[L5EDD6Q00019]
1366 x 768 XGA, 16:9
Visible Diagonal 800mm [660mm]
Visible Diagonal 800mm [660mm]
Audio Output:
20W (5W + 5W, 5W + 5W)
Headphones:
3,5mm, 8
Ω Impedance
Accessories supplied :
Remote Control
2 x R6 (UM3) Batteries
Dimensions:
Height:
Width:
Depth:
Including TV stand
624mm
857mm
300mm
[549mm]
[724mm] [300mm]
TV set only
563mm
857mm
141mm
[487mm]
[724mm] [141mm]
Net weight:
22,5kg
[19,5kg]
Specifications are subject to change without notice.
Weights and dimensions shown are approximate.
Weights and dimensions shown are approximate.
This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not
contain warnings or cautions to advise non-technical individuals of potencial dangers in attempting to service a product. Products
powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the
product or products deal within this service information by anyone else could result in serious injury or death.
contain warnings or cautions to advise non-technical individuals of potencial dangers in attempting to service a product. Products
powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the
product or products deal within this service information by anyone else could result in serious injury or death.
Warning
2
CONTENTS
SAFETY PRECAUTIONS ........................................... 4
GENERAL QUIDE LINES...................................... 4
TOUCH – CURRENT CHECK............................... 4
PREVENTION OF ELECTROSTATIC DISCHARGE
(ESD) TO ELECTROSTATICALLY SENSITIVE (ES)
DEVICES .................................................................... 5
ABOUT LEAD FREE SOLDER (PBF)......................... 6
SUGGESTED PB FREE SOLDER........................ 6
APPLICABLE SIGNALS.............................................. 7
SERVICE HINTS ........................................................ 8
CHASSIS BOARD LAYOUT ....................................... 9
SETTING INSPECTION.............................................. 9
SELF-CHECK ........................................................... 10
POWER LED BLINKING TIMING CHART ................ 11
SERVICE MODE FUNCTION ................................... 12
SERVICE 1 ............................................................... 13
SERVICE 2 ............................................................... 14
OPTION DESCRIPTION........................................... 15
ADJUSTMENT METHOD ......................................... 17
WIRING DIAGRAM................................................... 18
BLOCK DIAGRAMS.................................................. 19
PARTS LOCATION................................................... 22
REPLACEMENT PARTS LIST.................................. 24
SCHEMATIC DIAGRAMS......................................... 49
AP-BOARD (1 OF 3) SCHEMATIC DIAGRAM.... 50
AP-BOARD (2 OF 3) SCHEMATIC DIAGRAM.... 51
AP-BOARD (3 OF 3) SCHEMATIC DIAGRAM.... 52
DG-BOARD (1 OF 8) SCHEMATIC DIAGRAM ... 53
DG-BOARD (2 OF 8) SCHEMATIC DIAGRAM ... 54
DG-BOARD (3 OF 8) SCHEMATIC DIAGRAM ... 55
DG-BOARD (4 OF 8) SCHEMATIC DIAGRAM ... 56
DG-BOARD (5 OF 8) SCHEMATIC DIAGRAM ... 57
DG-BOARD (6 OF 8) SCHEMATIC DIAGRAM ... 58
DG-BOARD (7 OF 8) SCHEMATIC DIAGRAM ... 59
DG-BOARD (8 OF 8) SCHEMATIC DIAGRAM ... 60
G-BOARD SCHEMATIC DIAGRAM .................... 61
GS-BOARD SCHEMATIC DIAGRAM.................. 62
H-BOARD (1 OF 4) SCHEMATIC DIAGRAM...... 63
H-BOARD (2 OF 4) SCHEMATIC DIAGRAM...... 64
H-BOARD (3 OF 4) SCHEMATIC DIAGRAM...... 65
H-BOARD (4 OF 4) SCHEMATIC DIAGRAM...... 66
V ,K-BOARD SCHEMATIC DIAGRAM ................ 67
CONDUCTOR VIEWS......................................... 68
3
Safety Precautions
General Guide Lines
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 touch current checks to prevent the customer from being exposed to shock hazards.
4. Always ensure panel TKKL5290 is correctly replaced before returning to customer (see Fig.1).
4. Always ensure panel TKKL5290 is correctly replaced before returning to customer (see Fig.1).
Touch-Current Check
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
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 Fig. 2.
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 (TOUCH CURRENT) expressed as voltage U1 and U2, does not exceed the following values:
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 (TOUCH CURRENT) expressed as voltage U1 and U2, does not exceed the following values:
For a. c.: U1 = 35 V (peak) and U2 = 0.35 V (peak);
For d. c.: U1 = 1.0 V,
For d. c.: U1 = 1.0 V,
Note:
The limit value of U2 = 0.35 V (peak) for a. c. and U1 = 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 U1 = 35 V (peak) for a. c. correspond to the value 70 mA (peak) a. c. for frequencies greater than 100
kHz.
2.0 mA d. c.
The limit value U1 = 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.
Fig. 2
Fig. 1
4
TO
APPLIANCES
EXPOSED
METAL PARTS
APPLIANCES
EXPOSED
METAL PARTS
Resistance values in ohms (
Ω)
V
R
0
=500
Ω
R
S
=1500
Ω
C
S
=0.22
µF
10k
Ω
0.022
µF
U
1
COLD
WATER PIPE
(EARTH GROUND)
WATER PIPE
(EARTH GROUND)
V: Voltmetr or oscilloscope
(r.m.s. or peak reading)
Measuring network for TOUCH CURRENTS
Input resistance:
≥ 1MΩ
Input capacitance:
≤ 200pF
Frequency range: 15Hz to 1MHz and d.c.respectively
NOTE – Appropriate measures should be taken to obtain the correct value in case of non-sinusoidal waveforms
U
2
(V)