TX-LR37V10, TX-LR32V10 - Panasonic TV Service Manual (repair manual)

Service Manual

(Information in brackets [ ] refers to model 32”) 
 

Source: 

220-240V AC, 50/60Hz 

 

168W  [143W]                                                  

Stand-by Power Consumption:  0.3W               

  

Impedance: 75

Ω unbalanced, Coaxial Type 

PAL-I/H, B/G, D/K, 

 

 

SECAM B/G, D/K, L/L’ 

 

 

PAL-525/60 (AV only) 

  

M.NTSC 

(AV 

only) 

 

 

NTSC (AV only) 

 
             Receiving Chanels: 

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)     

 

VHF/UHF 

 

 

 
 

Temperature:    0°C 

÷ 35°C 

 

 

 

       

Humidity:   20% ÷ 80% RH (non condensing)  

 

 

 

 

signals: 

 

 

 

VGA, SVGA, WVGA, XGA, SXGA, WXGA (compressed) 
Horizontal scanning frequency 

31 – 69 kHz 

Vertical scanning frequency   

59 – 86 Hz 

 
 

 

 

 
 
 
 
 
 

ORDER No. PCZ0909141CE 

 

 

and 

 

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) 

 

 

 Colour 

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 

 

 

 

 

 

HDMI1, HDMI2, HDMI3, HDMI4  Type A Connectors               HDMI

TM 

(Version 1.3a with x.v. Color

 TM

) 

 

 

This TV supports “HDAVI Control 4” function. 

 

 

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 (used for HDMI1, COMPONENT-AUDIO)

  

 

 

 

 

AUDIO OUT 

Audio (RCAx2) 

 500mV rms 1k

Ω (high impedance) 

 

DIGITAL AUDIO OUT 

PCM / Dolby digital, 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) 

 

ETHERNET 

RJ45, IEEE802.3 10BASE-T / 100BASE-TX 

 

screen: 

 

 

 

L5EDD9T00023                          [L5EDD8T00014]              

 

 

 

 

 

1920 x 1080 XGA, 16:9 

 

 

 

 

 

Visible Diagonal 940mm             [800mm]        

 

20W (2x10W), 10% THD 

 

 Headphones: 

   

3,5mm, 

8

Ω Impedance 

Remote Control 

 

2 x R6 (UM3)  Batteries 

 Dimensions: 

 

 

Height:       Width:       Depth:  

 

 

Including TV stand 

648mm      896mm       287mm 

 

 

                                                     [578mm      777mm       218mm] 

 

 

TV set only 

578mm      896mm         67mm 

 

                                                      [511mm     777mm        67mm] 

 Mass: 
 

Including TV stand  

18.0kg            [14.5kg]      

             TV set only 

 

 

      14.5kg          [11.5kg]  

  

 

Specifications are subject to change without notice. 

 

Mass 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. 

      

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). 

 
 
 
 
 
 
 
  
 
 
 
 
 
 

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. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

TO 
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 

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)