Read Panasonic TC-20LA5 / TC-20LE5 Service Manual online
1 Safety Precautions
3
1.1.
General Guidelines
3
2 Warning
3
2.1.
Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
3
2.2.
About lead free solder (PbF)
4
3 Location of Controls and Components
5
4 Service Mode
6
4.1.
How to enter into adjustment mode
6
4.2.
Cancellation
6
4.3.
Contents of adjustment mode
6
5 Troubleshooting Guide
7
5.1.
Self-check function
7
6 Disassembly and Assembly Instructions
8
6.1.
Removing the photo stand (TC-20LE5 only)
8
6.2.
Removing the pedestal assembly (TC-20LA5 only)
8
6.3.
Removing the rear cover
8
6.4.
Removing the control button assembly
8
6.5.
Removing the chassis assembly
9
6.6.
Removing the A-Board, TA-Board, and Power unit
9
6.7.
Removing the speaker and the pedestal bracket
9
6.8.
Removing the LCD panel, R-Board, and V-Board
10
6.9.
Removing the LCD mount metal
10
6.10. Location of Lead Wiring
11
7 Measurements and Adjustments
13
7.1.
Video Signal Level Adjustment
13
7.2.
LCD GAMMA Adjustment
13
7.3.
MTS Adjustment
14
8 Block Diagram
15
9 Wiring Connection Diagram
17
10 Schematic Diagrams
19
10.1. Schematic Diagram Notes
19
10.2. A-Board (1 of 5) Schematic Diagram
20
10.3. A-Board (2 of 5) Schematic Diagram
21
10.4. A-Board (3 of 5) Schematic Diagram
22
10.5. A-Board (4 of 5) Schematic Diagram
23
10.6. A-Board (5 of 5) Schematic Diagram
24
10.7. R, TA, and V-Board Diagram
25
11 Printed Circuit Views
27
11.1. A-Board
27
11.2. R, V and TA-Board
30
12 Exploded View and Replacement Parts List
31
12.1. Exploded View
31
12.2. Packing Exploded View
32
12.3. Mechanical Replacement Parts List
33
13 Electrical Parts List
34
13.1. Electrical Parts List Notes
34
13.2. Electrical Replacement Parts List
35
Connection Terminals
INPUT
VIDEO (RCA PIN Type × 1) × 2
1.0 Vp-p (75
W)
S-VIDEO (MINI DIN 4pin × 1) × 2
Y : 1 Vp-p (75
W), C : 0.286 Vp-p (75
W)
AUDIO L-R (RCA PIN Type × 2) × 2
0.5 Vrms
COMPONENT VIDEO INPUT
Y
1.0 Vp-p (including synchronization)
P
B
/ P
R
± 0.35 Vp-p
AUDIO L-R (RCA PIN Type × 2)
0.5 Vrms
Dimensions ( W × H × D )
Including TV Stand
19.61 “ (498 mm) ×
19.61 “ (498 mm) ×
19.93 “ (506.2 mm) ×
17.91 “ (454.8 mm) ×
10.24 “ (260 mm) (TC-20LA5)
7.60 “ (193 mm) (TC-20LE5)
TV Set Only
19.61 “ (498 mm ×
17.72 “ (450.2 mm) ×
3.66 “ (93 mm)
Mass (Weight)
16.8 lb. (7.6 kg) Net (TC-20LA5)
14.1 lb. (6.4 kg) Net (TC-20LE5)
Note:
Design and specifications are subject to change without notice. Weight and dimensions shown are approximate.
CONTENTS
Page
Page
2
TC-20LA5 / TC-20LE5
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