Panasonic TC-L32C5 Service Manual
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Panasonic TC-L32C5 Service Manual

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TC-L32C5
Model No.
TC-32LC54
TC-L32C5X
TC-L3252C
©Panasonic Corporation 2012.
Unauthorized copying and distribution is a
violation of law.
ORDER NO.MTNC120449CE
B01 Canada: B61
LCD TV

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Summary of Contents for Panasonic TC-L32C5

  • Page 1 ORDER NO.MTNC120449CE B01 Canada: B61 LCD TV TC-L32C5 Model No. TC-32LC54 TC-L32C5X TC-L3252C ©Panasonic Corporation 2012. Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    CONTENTS 1. Safety precautions ....................3 2. Alignment instructions and method of software upgrading........5 3. Working principle analysis of the unit ..............14 4. Block diagram ...................... 15 5. IC block diagram ....................16 6. Wiring diagram ....................28 7.

  • Page 3: Safety Precautions

    Attention: This service manual is only for service personnel to take reference with. Before servicing please read the following points carefully. Safety precautions 1. Instructions Be sure to switch off the power supply before replacing or welding any components or inserting/plugging in connection wire Anti static measures to be taken (throughout the entire production process!): a) Do not touch here and there by hand at will;...
  • Page 4 2.11 Special care must be taken in transporting or handling it. Exquisite shock vibration may lead to breakage of screen glass or damage to driving circuit. Therefore it must be packed in a strong case before the transportation or handling. 2.12 For the storage make sure to put it in a place where the environment can be controlled so as to prevent the temperature and humidity from exceeding the limits as specified in the manual.

  • Page 5: Alignment Instructions

    2. Alignment instructions (1) Test equipment VG-859 (YPbPr, VGA, HDMI signal generator) FLUKE 54200(TV signal generator) CA210 (white balancer) (2) Power test Connect main board, power board and IR board according the wiring diagram, connect the power and press power key (Remote controller or Keypad) button to turn on the TV. a) Test the pin voltage of P802/power board , the data is shown in table1: Table1 voltage data of P802 For 32”...
  • Page 6 (3) Alignment flow-chart The alignment flow-chart is shown as fig-1 Check if DDC, HDCP KEY, FLASH are written Combined test for general assembly White balance adjustment Connect to the center signal source and check each Function of TV (station leaking, analog control, etc.) Check the output of earphone and speaker.
  • Page 7 (4) Adjustment instruction At any input source then press the “←”, “EXIT” and “OK” (Remote control within 1 sec) to enter factory mode During Factory menu, if “MENU” key is pushed, system will exit factory mode. 4-1. Source Calibration 4-1.1. Set the signal generator to input sources Component on LCD-TV; ASTRO-859 signal setting to NTSC-M (PG2 mode Timing 924 and Pattern 984 SMPTE Color Bar.) 4-1.2.
  • Page 8 4-2. Color Temperature Adjustment & Check 1024*768, 60HZ(ASTRO-859: PG1 856), Level: 77(30% 4-2.1. Set the signal generator to RGB, ) or 178(70%). Full white pattern. (RGB gain and offset all should not over 128,and one of RGB gain and offset have to be setting on 110.
  • Page 9 Decrease B OFFSET drive from default value (4) According to a x and y value, please following adjustment of (4)-1 or (4)-2. (4)-1 If x value is higher than spec Decrease R OFFSET drive from default value. Increase B OFFSET drive from default value. (4)-2 If y value is higher than spec, Decrease B OFFSET drive from default value Step 3.When finishing OFFSET parts, then recheck Gain parts .unitl Both of them meet the...
  • Page 10 power on (LCD turn on), and count the time automatically. The timer is continuous and saved (per 10 minutes) forever, unless it will be reset by doing “Timer Clear”. 3) Preset channel Load preset channel for production line. (Refer 4.4.4 Preset channel table). 4) NVRAM CLEAR Initialize program’s default values to NVRAM for following adjustment items accuracy.
  • Page 11 SYNC PIXEL SYNC BACK FREQ PERIOD Display POLARITY CLOCK WIDTH PORCH MODE LINE(kHz) LINE (pixel) LINE (pixel) LINE (pixel) LINE (pixel) LINE FRAME FIELD (MHz) FRAME FRAME FRAME FIELD (Hz) (lines) (lines) (lines) (lines) 15.734 1716 Negitive 1440 59.94 Negitive 59.94Hz 720x480i 31,469 Negitive...
  • Page 12 PIXEL SYNC BACK SYNC FREQ FREQ PERIOD Display POLARITY CLOCK WIDTH PORCH LINE (pixel) LINE (pixel) LINE (pixel) LINE(kHz) LINE (pixel) LINE MODE (MHz) FRAME FRAME FRAME FRAME(Hz) FIELD(lines) FIELD (lines) (lines) (lines) VGA 60Hz 31.469 800 Negitive 25.175 640x480 59.94 525 Negitive SVGA 60Hz...
  • Page 13 (4) Upgrading is starting, please wait for the progress finish. (5) When the progress completed, please follow the instruction to remove USB and restart by AC off then on.

  • Page 14: Working Principle Analysis Of The Unit

    Working principle analysis of the unit 1. NTSC signals flow: Antenna signal will be send to tuner ENV56U05D8F, t h e n T u n e r w i l l b e demodulating and output standard video signal TV-CVBS, and sound SIF signal. TV-CVBS will send to the master control IC ZR39748 to video decode, de-interlace and scaler, then output LVDS level drive for panel display.

  • Page 15: Block Diagram

    SPC32T 32” Block Diagram 4-1 Block Diagram...

  • Page 16: Ic Block Diagram

    IC block diagram 1. Zoran ZR748 Integrated Digital & Analog Demodulator • • 8VSB/QAM-B • NTSC/BTSC/A2K • Video Inputs • Three (3) 1080p HDMI (v1.4a/DC)* • One (1) 1080p YPbPr • One (1) VGA, up to WUXGA resolution • Two (2) CVBS*, One (1) S-Video •...
  • Page 17 • 64MByte typical for most designs • Power • 1.1V core voltage, 1.8V memory I/F, 3.3V I/O • Two Package Options • 365-ball BGA, 23x23mm • 256-pin LQFP with e-pad, 28x28mm (*) Slight variation of support with QFP package 1.1. SupraHD 748 IC Description ®...
  • Page 18 • Royalty-free Zoran True Fonts for OSD and closed-captioning • Transport, video decode (single MP@HL), audio decode (AC-3, MPEG Layer I & II), graphics, and display drivers • Drivers for tuner, HDMI and analog inputs • ThreadX royalty-free RTOS 1.2.2. Video Processing •...
  • Page 19 • Vertical scaler - 5-tap FIR, 64-phase FIR - Programmable up scaler [64x] - Programmable down scaler [1/32x] 1.2.3. Video Input • Integrated HDMI link and PHY • Three physical ports (BGA package) - One physical port (QFP package) • Single instance of the PHY •...
  • Page 20 • Standard definition (SD) video inputs • Two (2) CVBS inputs (BGA package) - One (1) CVBS input (QFP package) • One (1) S-Video input • No low-pass filter (LPF) required on SD inputs 1.2.4. Video Output • Gradient recovery •...
  • Page 21 - 82dB dynamic range and -75dB THD A/D conversion - Supported audio sampling rates from 32 to 96 KHz • Up to six (6) channels of audio output, on DDX or I2S lines • Two (2) DDX differential speaker outputs for direct power-stage drive (channels 0-1) - Or four (4) single-ended DDX for analog output (channels 0-3) - Or one (1) stereo I2S output (channels 0-1) I2S data aligned in I2S format;...
  • Page 22 1.2.6. Video Decoders • MPEG MP@HL decoder • Decode of a single HD (MP@HL) stream • Decodes of ISO-13818-2 MP@ML, MP@HL • Decode of all ATSC-compliant formats • Slice-level and frame-level error concealment • The decoder engine can decode MPEG-compressed bitstreams as defined in the following specifications: - ISO/IEC 13818-2, “Information Technology - Generic Coding of Moving Pictures and Associated Audio Information: Video,”...
  • Page 23 1.2.7. Front-End Demod / Demux • Integrated 8VSB/QAM-B demodulator • ATSC 8-VSB demodulation - Enhanced 8-VSB multi-path performance with wide equalizer coverage - Superior VSB indoor reception using enhanced equalization and synchronization algorithms, enabling Brazil and other 0 dB ghost reception - Adaptive control loops dependent upon channel conditions for fast channel acquisition and optimal tracking - Advanced doppler ghost rejection...
  • Page 24 • Excellent (110%) over modulation at all white signal (100IRE) • Digital video IF AGC and optional delayed tuner AGC with programmable take over point • AM interference rejection 　BTSC/A2 demodulator • • BTSC mono, stereo and SAP DBX decoding for US NTSC TV reception •...
  • Page 25 • IRR input • General-purpose 8-bit ADC with 5 multiplexed inputs • i.e. Voltage monitoring • Sleep timer • Watchdog timer • GPIO interrupt control • Support for A/V input monitoring • Monitors the HDMI inputs for activity • Integrated EDID memory for HDMI inputs and VGA inputs •...
  • Page 26 • Two (2) PWM outputs • Three (3) 2-signal UARTs • Maximum baud rate: 115200 • 16550 compatible • Third UART is allocated to TVuC and shared with main CPU UART • Two (2) I2C master or slave interfaces • Maximum bitrate: 400 Kb/s •...
  • Page 28 SPC32T 32-inch Wiring Diagram BLOCK...
  • Page 29 II. Wiring Connection CMI panel...

  • Page 30: Trouble Shooting

    Trouble shooting 1. Fault clearance Before calling your dealer or service center for assistance, check the matters below once again. (1) Make sure you have connected LCD TV to your equipment as described in the section “ CONNECTING LCD TV”. (2) Check cable connection.

  • Page 31: Troubleshooting Guide

    2. Troubleshooting guide The flow chart shown below will help you to troubleshoot your Televison set with it doesn’t display normally. Each procedure offers a simple way to check for system errors. Before starting, ensure that there is a signal in and that the Televison is turned on. 2-1 Power LED no light...
  • Page 32 2-2 Has audio but no video out Has video but no audio out step 1...
  • Page 33 Has video but no audio out step 2...

  • Page 34: Exploded View

    8. Exploded View KEY PLATE ASSY(NA) PCBA IR/B FIRMWARE M/B PWR MODU...

  • Page 36: Replacement Parts List

    9. Replacement Parts List Note: All parts aresupplied by PAVCA. Safety Ref.No. Part No. Part Name & Description Remarks TZZ00000019A PCBA IR/B TZZ00000022A FIRMWARE M/B 32LC54 L3252C L32C5 TZZ00000117A FIRMWARE M/B L32C5X L5EDDYY00392 LCD MODU TZZ00000030A SPK SET(90d)(PIN12d) TZZ00000031A H-CON SET TZZ00000033A H-CON SET TZZ00000034A...

  • Page 37: Boards Layout

    10. Boards Layout Ref No. Board Name Function Remrks PCBA IR/B Remote Receiver, LED All boards are non servicable FIRMWARE M/B Main Board, Audio & Video Signal Processing and should be exchanged for PWR MODU Power (AD/DC), DC-DC service KEY PLATE ASSY(NA) Control Button...

This manual is also suitable for:

Tc-32lc54Tc-l32c5xTc-l3252cTc-l42u5Tc-l42u5x

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