Panasonic TC-L32C5 Service Manual

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Summary of Contents:

[Page 1] Panasonic TC-L32C5

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

[Page 2] Panasonic TC-L32C5

2 CONTENTS 1. Safety precautions ................................................................................................. 3 2. Alignment instructions and method of software upgrading..................................... 5 3. Wor...

[Page 3] Panasonic TC-L32C5

3 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 ...

[Page 4] Panasonic TC-L32C5

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 ...

[Page 5] Panasonic TC-L32C5

5 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 accor...

[Page 6] Panasonic TC-L32C5

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 ...

[Page 7] Panasonic TC-L32C5

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. Sour...

[Page 8] Panasonic TC-L32C5

8 4-2. Color Temperature Adjustment & Check 4-2.1. Set the signal generator to RGB, 1024*768, 60HZ(ASTRO-859: PG1 856), Level: 77(30%) or 178(70%). Full white pattern. (RGB gain and offset all should no...

[Page 9] Panasonic TC-L32C5

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 f...

[Page 10] Panasonic TC-L32C5

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...

[Page 11] Panasonic TC-L32C5

11 FREQ PERIOD SYNC POLARITY PIXEL CLOCK Display SYNC WIDTH BACK PORCH MODE LINE(kHz) FRAME (Hz) LINE (pixel) FIELD (lines) LINE FIELD (MHz) LINE (pixel) FRAME (lines) LINE (pixel) FRAME (lines) LINE (pixel) FRAME (line...

[Page 12] Panasonic TC-L32C5

12 FREQ FREQ PERIOD SYNC POLARITY PIXEL CLOCK Display SYNC WIDTH BACK PORCH MODE LINE(kHz) FRAME(Hz) LINE (pixel) FIELD(lines) LINE FIELD (MHz) LINE (pixel) FRAME (lines) LINE (pixel) FRAME (lines) LINE (pixel) FRAME (lines)...

[Page 13] Panasonic TC-L32C5

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] Panasonic TC-L32C5

14 Working principle analysis of the unit 1. NTSC signals flow: Antenna signal will be send to tuner ENV56U05D8F, then Tuner will be demodulating and output standard video signal TV-CVBS , and sound S ...

[Page 15] Panasonic TC-L32C5

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

[Page 16] Panasonic TC-L32C5

16 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 r...

[Page 17] Panasonic TC-L32C5

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, 23x23mm2 • 256-pin LQFP with e-pad, 28x28mm2 (*) Slight variation of support with QFP pa...

[Page 18] Panasonic TC-L32C5

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 • Thre...

[Page 19] Panasonic TC-L32C5

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 ...

[Page 20] Panasonic TC-L32C5

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 r...

[Page 21] Panasonic TC-L32C5

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 driv...

[Page 22] Panasonic TC-L32C5

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 dec...

[Page 23] Panasonic TC-L32C5

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 sync...

[Page 24] Panasonic TC-L32C5

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, ste...

[Page 25] Panasonic TC-L32C5

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...

[Page 26] Panasonic TC-L32C5

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 bit...

[Page 27] Panasonic TC-L32C5

27 ...

[Page 28] Panasonic TC-L32C5

28 SPC32T 32-inch Wiring Diagram I. BLOCK ...

[Page 29] Panasonic TC-L32C5

29 II. Wiring Connection CMI panel ...

[Page 30] Panasonic TC-L32C5

30 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 T...

[Page 31] Panasonic TC-L32C5

31 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 sig...

[Page 32] Panasonic TC-L32C5

32 2-2 Has audio but no video out 2-3 Has video but no audio out step 1 ...

[Page 33] Panasonic TC-L32C5

33 2-4 Has video but no audio out step 2 ...

[Page 34] Panasonic TC-L32C5

8. Exploded View 14 13 29 3 11 27 4 1 34 30 23 16 24 55 20 34 32 2 5 33 28 30 30 6 30 30 32 15 10 29 25 34 7 18 17 19 22 34 28 4 31 8 27 21 9 12 11 KEY PLATE ASSY(NA) PCBA IR/B FIRMWARE M/B PWR MODU 26 8 6 ...

[Page 35] Panasonic TC-L32C5

37 38 40 39 41 42 43 44 35 36 50 48 47 49 51 46 45 ...

[Page 36] Panasonic TC-L32C5

9. Replacement Parts List Safety Ref.No. Part No. Part Name & Description Pcs Remarks 1 TZZ00000019A PCBA IR/B 1 2 TZZ00000022A FIRMWARE M/B 1 32LC54 L3252C L32C5 2 TZZ00000117A FIRMWARE M/B 1 L32C5X 3 L5EDDYY00392 LCD MODU 1 4 TZZ00000030A SPK...

[Page 37] Panasonic TC-L32C5

10. Boards Layout Ref No. Board Name Function Remrks 1 PCBA IR/B Remote Receiver, LED 2 FIRMWARE M/B Main Board, Audio & Video Signal Processing 12 PWR MODU Power (AD/DC), DC-DC 16 KEY PLATE ASSY(NA) Control Button All boards are non servicable a...