Panasonic TX-R26LE8KH Service Manual ▷ View online
Panasonic
Corporation
2008.
TX-R26LE8KH
LH80 Chassis
LCD TV
Specifications
Power Source :
AC SINGLE 220-240 V, 50/60 Hz
Power Consumption
Average Use
102 W
Standby condition
1.0 W
Display panel
Aspect Ratio
16:9
Visible screen size
576 mm (W) × 324 mm (H)
(No. of pixels)
1,049,088 (1,366 (W) × 768 (H))
Sound
Speaker
Full range × 2 pcs, 8
Ω
Audio Output
20 W (10 W + 10 W), 10% THD
Headphones
M3 (3.5 mm) Jack × 1
PC signals
VGA, SVGA, XGA, WVGA, WXGA
Vertical scanning frequency 60 Hz
Receiving Systems / Band name
SYSTEMS
FUNCTIONS
———————————————————————————————————————
1
PAL B, G, H
2
PAL I
Reception
of broadcast
playback from
video cassette tape
recorders.
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 or DVD.
9
NTSC 4.43 / 6.0 MHz
ORDER NO. MTV0801670CE
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
About Lead Free Solder (PbF)
6
4
Self Check Function
7
4.1.
Self Check
7
4.2.
Power LED Blinking Timing Chart
7
4.3.
LED and Remote Controller Receiver Check
8
5
Chassis Board
9
5.1.
Chassis Installation
9
6
Location of Lead Wiring
10
6.1.
Wire Dressing
10
6.2.
Wire Dressing and Connections
11
7
Disassembly for Service
12
10
NTSC 4.43 / 6.5 MHz
11
NTSC 3.58 / 5.5 MHz
Playback from
special VCR’s or DVD.
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 or DVD.
16
PAL 60 Hz / 6.0 MHz
17
PAL 60 Hz / 6.5 MHz
Aerial - Rear
VHF / UHF
Operation Conditions
Temperature : 0°C - 35°C
Humidity : 20% -- 80% RH (non-condensing)
Connection Terminals :
AV1
AUDIO L-R
RCA PIN Type × 2
0.5 V[rms]
Input
VIDEO
RCA PIN Type × 1
1.0 V[p-p] (75
Ω )
AV2
AUDIO L-R
RCA PIN Type × 2
0.5 V[rms]
Input
VIDEO
RCA PIN Type × 1
1.0 V[p-p] (75
Ω )
COMPONENT
Y
1.0 V[p-p] (including synchronization)
P
B
/ C
B
, P
R
/ C
R
±0.35 V[p-p]
AV3
AUDIO L-R
RCA PIN Type × 2
0.5 V[rms]
Input
VIDEO
RCA PIN Type × 1
1.0 V[p-p] (75
Ω )
S VIDEO
Mini DIN 4-pin
Y: 1.0 V[p-p] (75
Ω) C: 0.286 V[p-p] (75 Ω)
Others
HDMI 1/2 Input
TYPE A Connectors
Audio Input for
HDMI 1
HDMI 1
RCA PIN Type × 2
0.5 V[rms]
PC Input
HIGH-DENSITY D-SUB 15 PIN
R, G, B / 0.7 V[p-p] (75
Ω)
HD, VD / TTL LEVEL 2.0-5.0 V[rms] (high
impedance)
impedance)
Monitor
AUDIO L-R
RCA PIN Type × 2
0.5 V[rms] (high impedance)
Output
VIDEO
RCA PIN Type × 1
1.0 V[p-p] (75
Ω )
Dimensions (W × H × D)
700 mm × 504 mm × 225 mm (With TV Stand)
700 mm × 466 mm × 107.5 mm (TV only)
Mass
12.5 kg (Net)
Design and specifications are subject to change without notice. Mass and dimensions shown are approximate.
CONTENTS
Page
Page
2
TX-R26LE8KH
7.1.
AC Code dressing for 2-Pin
12
7.2.
AC Code dressing for 3-Pin
12
7.3.
Chassis Rail Installation
13
7.4.
VESA and Pedesdal Bracket Installation
14
7.5.
Pedestal Assembly Preparation
15
7.6.
LED Panel Installation
17
7.7.
LCD Panel Assembly Installation
18
7.8.
Back Cover and Model Name Plate Installation
19
8
Service Mode Adjustment
20
8.1.
SERVICE 1
20
8.2.
SERVICE 2
20
8.3.
Self Check Mode
20
8.4.
Hotel Mode Adjustment
20
9
Adjustment
23
9.1.
Voltage Chart of A Board
23
9.2.
Voltage Chart of P board
23
10 Conductor Views
24
10.1. A-Board
24
10.2. A-Board
25
11 Schematic Diagram
26
11.1. Schematic Diagram Notes
26
11.2. A Board
27
11.3. G Board
37
11.4. K Board
39
11.5. P Board
40
11.6. SW Board
44
11.7. V Board
45
11.8. Z Board
49
12 Parts Location & Mechanical Replacement Parts List
53
12.1. Parts Location
53
13 Packing Exploded View
54
14 Replacement Parts List
55
14.1. Electrical Replacement Parts List
56
3
TX-R26LE8KH
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.
1.2. 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 ground such
as a water pipe as shown in Figure 1.
3. Use the 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. The potential at any point (touch current) expressed as voltage U
1
and U
2
, do not exceed the following values:
For AC: U
1
= 35 V (peak) and U
2
= 0.35 V (peak);
For DC: U
1
= 1.0 V,
NOTE :
The limit value of U
2
= 0.35 V (peak) for AC and U
1
= 1.0 V for DC correspond to the values 0.7 mA (peak) AC and 2.0 mA DC.
The limit value U
1
= 35 V (peak) for AC correspond to the value 70 mA (peak) AC for frequencies greater than 100 kHz.
6. Should a measurement be 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.
4
TX-R26LE8KH