DOWNLOAD Panasonic TX-37LZ85L / TX-32LZ85L / TX-R37LZ85 Service Manual ↓ Size: 15.54 MB | Pages: 76 in PDF or view online for FREE

Model
TX-37LZ85L TX-32LZ85L TX-R37LZ85
Pages
76
Size
15.54 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LH69 CHASSIS
File
tx-37lz85l-tx-32lz85l-tx-r37lz85.pdf
Date

Panasonic TX-37LZ85L / TX-32LZ85L / TX-R37LZ85 Service Manual ▷ View online

Service Manual
Colour LCD Television 
TX-37LZ85L
 
TX-32LZ85L 
TX-R37LZ85 
 
 
LH69 Chassis 
 
 
Specifications 
(Informations in brackets [ ] refers to model 32”) 
 
 Power 
Source: 
220-240V AC, 50/60Hz 
 
Power Consumption 
 
192W  [151W] 
 
 
Stand-by Power Consumption:  0.3W 
 
 
 
 Aerial 
Impedance: 75
Ω unbalanced, Coaxial Type 
 
 
Receiving System: 
LZ85L                                    RLZ85 
 
 
 
PAL-I,                                    PAL-I/H, B/G, D/K, 
 
 
PAL-525/60 (AV only)                 SECAM B/G, D/K, L/L’ 
 
 
M.NTSC (AV only)                     PAL-525/60 (AV only) 
 
 
NTSC (AV only)                        M.NTSC (AV only) 
 
 
                                            NTSC (AV only) 
 
 
Receiving Channels: 
LZ85L                                    RLZ85 
 
 
 
UHF E21-E68                           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 
 
 
 
Humidity:   20% 
÷ 80% RH (non condensing) 
 
 
 
  Scanning format: 
  480i(60Hz), 480p(60Hz), 576i(50Hz), 576p(50Hz), 720p(60Hz), 720p(50Hz), 1.080i(60Hz),  
 
   
 
  1.080i(50Hz), 1.080p(60Hz), 1.080p(50Hz), 1080p(24Hz) 
 
 
 
 PC 
signals: 
 
 
 
VGA, SVGA, XGA, SXGA(compressed) 
Horizontal scanning frequency 
31 – 69 kHz 
Vertical scanning frequency   
59 – 86 Hz 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
ORDER No. PCZ0803022CE 
 
Intermediate Frequency: 
Video/Audio    
 
 
LZ85L 
 
      RLZ85 
Video 
 
 
 
38,9MHz 
                  38,9MHz, 33,9MHz 
 
 Audio
 
32.90MHz                   33,4MHz (B/G), 33,16MHz (A2) 
  
32.35MHz(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                    34,47MHz (PAL) 
 
 
                                34,5MHz, 34,65MHz (SECAM) 
 
 
                                38,3MHz, 38,15MHz (SECAM L
 
 
 Terminals: 
 
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 
 
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 
 
 
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 
 
AV2 OUT 
Video (21 pin)  1V p-p 75
Ω 
 
 
Audio (21 pin)  500mV rms 1k
Ω 
 
 
 
 
 
AV3 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 (used for HDMI3 AUDIO) 
  
Video 
(RCAx1) 
 1V p-p 75
Ω 
 
 
HDMI1, HDMI2, HDMI3 
Type A Connector 
 
 COMPONENT 
 
Video 
(RCAx3) 
 Y:1V p-p 75
Ω (including synchronization) 
 
 
Pb, Pr: ±0,35V p-p 75
Ω 
 
AUDIO IN 
Audio (RCAx2) 500mV rms 10k
Ω (for HDMI1, COMPONENT-AUDIO)
   
 
 AUDIO 
OUT 
Audio 
(RCAx2) 
 500mV rms 1k
Ω (high impedance) 
 
DIGITAL AUDIO OUT 
PCM, Fiber optic 
 
CARD SLOT 
SD CARD slot x1 
 
 
PC 
HIGH-DENSITY D_SUB 15PIN  R,G,B: 700mV p-p 75
Ω  
 
 
HD,VD/TTL Level 2-5V p-p (high impedance) 
 
 
 
 LCD 
screen:   
 
 
L5EDD9T00004                          [L5EDD8T00002]              
 
 
 
 
 
1920 x 1080 XGA, 16:9 
 
 
 
 
 
Visible Diagonal 940mm             [800mm]        
 
  Audio 
Output: 
   
20W (2x10W) 
 
 Headphones: 
   
3,5mm, 
8
Ω Impedance 
 
 
Accessories supplied : 
 
Remote Control 
 
2 x R6 (UM3) Batteries 
 
 Dimensions: 
 
 
Height:       Width:       Depth:  
 
 
Including TV stand 
648mm      943mm      295mm 
 
 
                                                      [579mm     831mm      225mm] 
 
 
TV set only 
606mm      943mm     108mm 
 
                                                      [538mm     831mm     103mm] 
 
 Net 
weight: 
 
Including TV stand  
23.0kg            [18.0kg]      
             TV set only 
 
 
      20.0kg          [15.5kg]  
 
 
Specifications are subject to change without notice. 
 
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. 
Warning 
CONTENTS
SAFETY PRECAUTIONS ........................................... 4 
 GENERAL 
GUIDE 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 
LOCATION OF LEAD WIRING………………………….9 
SETTING INSPECTION............................................ 10
 
SELF-CHECK ........................................................... 11 
POWER LED BLINKING TIMING CHART ................ 12 
SERVICE MODE FUNCTION ................................... 13 
SERVICE ................................................................. 14 
OPTION BYTES DESCRIPTION .............................. 15 
ADJUSTMENT METHOD.......................................... 16 
WIRING DIAGRAM ................................................... 17 
BLOCK DIAGRAMS.................................................. 18 
PARTS LOCATION................................................... 21 
REPLACEMENT PARTS LIST.................................. 23 
SCHEMATIC DIAGRAMS ......................................... 43 
 
DG-BOARD (1 OF 16) SCHEM. DIAGRAM ........ 44 
 
H-BOARD (1 OF 5) SCHEMATIC DIAGRAM ...... 60 
      P-BOARD (1 OF 3) SCHEMATIC DIAGRAM...... 65 
 V-BOARD 
SCHEMATIC DIAGRAM .................... 68 
 M-BOARD 
SCHEMATIC DIAGRAM.................... 69 
CONDUCTOR VIEWS .............................................. 70  
 
 
 
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 TKP0E16001
 
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 
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: 
For a. c.: U1 = 35 V (peak) and U2 = 0.35 V (peak); 
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. 
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 
TO 
APPLIANCES 
EXPOSED 
METAL PARTS 
Resistance values in ohms (
Ω) 
R
0
=500
Ω 
R
S
=1500
Ω 
C
S
=0.22
μF 
10k
Ω 
0.022
μF 
COLD 
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) 
Fig. 1 
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Panasonic TX-37LZ85L / TX-32LZ85L / TX-R37LZ85 Service Manual ▷ Download

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  • Here you can View online or download the Service Manual for the Panasonic TX-37LZ85L / TX-32LZ85L / TX-R37LZ85 in PDF for free, which will help you to disassemble, recover, fix and repair Panasonic TX-37LZ85L / TX-32LZ85L / TX-R37LZ85 TV. Information contained in Panasonic TX-37LZ85L / TX-32LZ85L / TX-R37LZ85 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.