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Panasonic TH-50PB2E Service Manual
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Panasonic TH-50PB2E Service Manual

Interactive plasma display
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Interactive Plasma Display
TH-50PB2E
Model No.
GPF16DMON Chassis
© Panasonic Corporation 2013
Unauthorized copying and distribution is a violation
of law.
ORDER NO.PCZ1305123CE

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Summary of Contents for Panasonic TH-50PB2E

  • Page 1 ORDER NO.PCZ1305123CE Interactive Plasma Display TH-50PB2E Model No. GPF16DMON Chassis © Panasonic Corporation 2013 Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    TH-50PB2E TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions -----------------------------------------------3 10.4. Block (3 of 6) Diagram --------------------------------- 48 1.1. General Guidelines ----------------------------------------3 10.5. Block (4 of 6) Diagram --------------------------------- 49 1.2. Touch-Current Check--------------------------------------3 10.6. Block (5 of 6) Diagram --------------------------------- 50 2 Warning --------------------------------------------------------------4 10.7.

  • Page 3: Safety Precautions

    TH-50PB2E 1 Safety Precautions 1.1. General Guidelines 1. When conducting repairs and servicing, do not attempt to modify the equipment, its parts or its materials. 2. When wiring units (with cables, flexible cables or lead wires) are supplied as repair parts and only one wire or some of the wires have been broken or disconnected, do not attempt to repair or re-wire the units.

  • Page 4: Warning

    TH-50PB2E 2 Warning 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi- tive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec- trostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor “chip”...

  • Page 5: About Lead Free Solder (Pbf)

    TH-50PB2E 2.2. About lead free solder (PbF) Note: Lead is listed as (Pb) in the periodic table of elements. In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder. The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu).

  • Page 6: Service Navigation

    TH-50PB2E 3 Service Navigation 3.1. Service Hint Board Name Function Board Name Function Digital core signal processor Data driver (Right) Slot Interface Data driver (Center) Scan drive Data driver (Left) Scan out (Upper) Power switch Non serviceable. SU-Board should be exchanged for service.

  • Page 7: Applicable Signals

    TH-50PB2E 3.2. Applicable signals...
  • Page 8 TH-50PB2E...

  • Page 9: Specifications

    TH-50PB2E 4 Specifications Power Source 220 - 240 V AC, 50/60 Hz Power Consumption Power on 375 W Stand-by condition 0.5 W Power off condition 0.3 W Plasma Display panel Drive method: AC type 50-inch, 16:9 aspect ratio 1,105 mm (W) × 622 mm (H) × 1,268 mm (diagonal) Screen size 2,073,600 (1,920 (W) ×...
  • Page 10 TH-50PB2E R6 (UM3) Size × 2 Batteries TMME289 × 1 Clamper J0KG00000014 × 2 Ferrite core Dimensions (W × H × D) 1,210 mm × 724 mm × 89 mm Mass (weight) approx. 34.0 kg net Notes: • Design and specifications are subject to change without notice. Mass and dimensions shown are approximate.

  • Page 11: Service Mode

    TH-50PB2E 5 Service Mode 5.1. CAT (Computer Aided Test) mode How to access the CAT mode. Method A : Main unit + remote control operation Press and hold the VOL down button / - button on the bottom side of the unit and press the RECALL button on the remote control 3 times quickly within 2 second, this will place the unit into the CAT mode.
  • Page 12 TH-50PB2E 5.1.2. CD mode Select the CD mode by Up/Down button on the remote control at the front page of CAT mode and then press the Mute button on the remote control more than 3 seconds. Memory data change To exit the CD mode, press the R button on the remote control.
  • Page 13 TH-50PB2E 5.1.3. NW mode Note : To use the network function, set each "Network Setup" setting and make sure to set the "Control I/F Select" to "LAN". Select the NW mode by Up/Down button on the remote control at the front page of CAT mode and then press the Action button on the remote control.
  • Page 14 TH-50PB2E 5.1.5. MS mode Select the MS mode by Up/Down button on the remote control at the front page of CAT mode and then press the Mute button on the remote control more than 3 seconds. To exit the MS mode, press the R button on the remote control.

  • Page 15: Iic Mode Structure (Following Items Value Is Sample Data)

    TH-50PB2E 5.2. IIC mode structure (following items value is sample data)

  • Page 16: Option - Mirror

    TH-50PB2E 5.3. Option - Mirror Picture can be reversed left and right or up and down. 00 : Default (Normal picture is displayed) 01 : Picture is reversed left and right. 02 : Picture is reversed up and down. Hint : If the defective symptom (e.g. Vertical bar or Horizontal bar) is moved by selection of this mirror, the possible cause is in A-...

  • Page 17: Troubleshooting Guide

    TH-50PB2E 6 Troubleshooting Guide 6.1. Self Check 6.1.1. Display Indication 1. Self-check is used to automatically check the bus line controlled circuit of the Plasma display. 2. To get into the Self-check mode, press the volume down button on the customer controls at the bottom of the set, at the same time pressing the OFF-TIMER button on the remote control, and the screen will show.
  • Page 18 TH-50PB2E 6.1.2. Power LED Blinking timing chart 1. Subject Information of LED Blinking timing chart. 2. Contents When an abnormality has occurred to the unit, the protection circuit operates and resets to the stand by mode. At this time, the defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.

  • Page 19: No Power

    TH-50PB2E 6.2. No Power First check point There are following 3 states of No Power indication by power LED. 1. No lit. 2. Green is lit then turns red blinking a few seconds later. 3. Only red is lit. 6.3.

  • Page 20: Local Screen Failure

    TH-50PB2E 6.4. Local screen failure Plasma display may have local area failure on the screen. Fig - 1 is the possible defect P.C.B. for each local area. Fig - 1...

  • Page 21: Failure Diagnosis When A Character Cannot Be Drawn With An Electronic Pen

    TH-50PB2E 6.5. Failure diagnosis when a character cannot be drawn with an electronic [Diagnosis for malfunction of electronic pen] Prior check Check "It is set to Touch-Pen Mode (Required for each input)." and "Registration of an electronic pen (Pairing) is made." in advance.
  • Page 22 NETWORK STANDBY PEN CHARGING MODE PAIRING PEN ADAPTER STATUS DETECTED When using Electronic Pen with Panasonic WhiteBoard Software When connect the electronic pen Environmental factors such as PC, adapter to the USB port of the computer adio wave interference, etc.
  • Page 23 TH-50PB2E [Diagnosis for malfunction of electronic pen] Electronic Pen's failure-analysis mode Can be quality judging of "Each switch/button of an electronic pen" and "Light receiving window of Pen tip/Eraser tip". How to enter failure-analysis mode Turn ON the power by pressing power button (about 2 seconds) while holding down the Select button.
  • Page 24 (State of power LED) Alternately blinks green and red Lighting green Checking of OSD of pairing tool software Pairing Panasonic WhiteBoard Software Easy WhiteBoard (CD-ROM enclosure) (built-in TV) Pairing in progress Set the electronic pen that you want to pair as pair-enabled and then move it closer to the electronic pen adapter.
  • Page 25 Select "PAIRING" of "TOUCH-PEN SETTINGS" in the "SETUP" menu of the display, or select [Settings] [Start Pairing Tool] from the main menu of Panasonic WhiteBoard Software and select [Unpairing All]. Upon completion of Electronic pen deregistration, the unpairing all completion screen is displayed. Select [OK].

  • Page 26: Failure Diagnosis When Electronic Pen Cannot Charge With A Charger

    TH-50PB2E 6.6. Failure diagnosis when electronic pen cannot charge with a charger [Diagnosis when electronic pen cannot charge with a charger] When the power LED of an electronic pen is blinking red, "loose connection of a charge cable", "failure of an electronic pen", and "failure of a charger" can be considered.

  • Page 27: Failure Diagnosis At The Time Of Wireless Lan Fault

    TH-50PB2E 6.7. Failure diagnosis at the time of wireless LAN fault [1]Check of LAN microcomputer Self check screen Check the communication with the LAN microcomputer [How to check] The display check of "IC2004" column in a self check The display check of the "LAN-MCU" column of CD mode...

  • Page 28: Service Fixture & Tools

    TH-50PB2E 7 Service Fixture & Tools 7.1. SC jig Purpose: To find the failure board (SC or SU/SD) when the power LED is blinking 7 times. SC jig: Jumper connector to connect to SC50 connector on SC board Part number:...

  • Page 29: Disassembly And Assembly Instructions

    TH-50PB2E 8 Disassembly and Assem- 8.3. Removal of DS-Board 1. Remove the Slot Block. bly Instructions (Refer to Removal of Slot Block) 2. Turn over the Slot Block. The important matter at the time of electronic pen 3. Remove the screws and then remove DS-Board.

  • Page 30: Removal Of Speaker

    TH-50PB2E 8.6. Removal of A-Board 5. Remove 2 Hexagonal-Head screws and 2 screws and then remove HX-Board. The important matter after A-Board exchange • Since a touch pen setup is come by [OFF] when A-Board is exchanged, please set to [ON].

  • Page 31: Removal Of P-Board

    TH-50PB2E 4. Remove 4 Sponges (Fan Corner) from the Fan. 3. Remove 1 screw ( ) and then remove the AC Inlet Assy. 5. Reassemble the Fans in reverse order. 6. Stick the Fan Sponges around the Fan. 8.10. Removal of H3-Board 1.

  • Page 32: Removal Of Su-Board And Sd-Board

    TH-50PB2E 8.11. Removal of SU-Board and SD- 2. Remove the flexible cables from the connectors (SU1,SU2, SU3, SU4, SU5, SU11, SD1, SD2, SD3, SD4, Board SD5). The important matter when fixing the flexible cables between SU-Board and Panel and between SD-Board and Panel •...

  • Page 33: Removal Of Sc-Board

    TH-50PB2E 8.12. Removal of SC-Board 4. Remove 2 screws ( ) and then remove A-Board Block. 1. Disconnect the connectors (SC2, SU41, SD42, SD46), and remove the flexible cable from the connector (SC20). 2. Remove 7 screws ( ). 3. Remove 2 screws ( ) and then remove SC-Board.

  • Page 34: Removal Of C1-Board

    TH-50PB2E 8.15. Removal of C1-Board 5. Remove the screws and then remove the Radiator Plate. The important matter when removing and fixing C1-Board • When you remove the Cabinet Assy, please remove the “gasket” between lower right the Glass Holder Bottom(Front) Assy and Radiator Plate first.

  • Page 35: Removal Of C3-Board

    TH-50PB2E 8.18. Removal of S1-Board 3. Remove the screws and then remove C2-Board. 1. Remove 2 screws (C) and then remove the S1-Board Block. 2. Disconnect the connector (S34). 3. Remove 1 screw (D) and then remove S1-Board. 8.17. Removal of C3-Board The important matter when removing and fixing C3-Board •...
  • Page 36 TH-50PB2E 4. Remove the screws and then remove the Handle Fixing Note: when Front Glass is exchanged • Paste the Front Glass Sponges in order along each Metal (L, R). Glass Holder (L Assy, R Assy, Top(Front) Assy, Bot- tom(Front) Assy).

  • Page 37: Removal Of Plasma Display Panel

    TH-50PB2E 9. Remove 2 hooks and then remove the 5 Key Button from 5. Remove the Glass Holder Top(Front) Assy from the Cabi- V2-Board. net Assy. 8.20. Removal of Plasma Display Panel • The C1, C2, C3 Boards are connected with the plasma display panel for the repair.
  • Page 38 TH-50PB2E 10. Remove 1 screw ( ) and then remove P-Board. 17. Remove the screws and then remove the S1-Board Block. 18. Remove the screws and then remove the Handle Fixing Metal (L, R). 11. Disconnect the connectors (A11, A22), and remove the flexible cables from the connectors (A31, C31).
  • Page 39 TH-50PB2E 22. Remove 9 screws ( ) and then remove the Corner Metal (TL, TR, BL, BR). 23. Remove the screws and then remove 28 Contact Metals. 24. Disconnect the connectors (C18, C25, C28), and remove the flexible cables from the connectors (C10, C20, C21,...

  • Page 40: Measurements And Adjustments

    TH-50PB2E 9 Measurements and Adjustments 9.1. Adjustment 9.1.1. Vsus selection Caution: When Plasma panel or A-board is replaced, Vsus should be set to LOW or HIGH. Procedure 1. Access the CAT mode. Press and hold the Volume down / - button on the front panel of the unit and press the [RECALL] button on the remote con- trol 3 times quickly within 2 second, this will place the unit into the CAT mode.

  • Page 41: Adjustment

    TH-50PB2E 9.2. Adjustment 9.2.1. RGB white balance adjustment Instrument Name Connect to Setting • RGB VGA60 W / B pattern PC IN terminal Picture menu: STANDARD • Color analyzer Panel surface User setting: Normal (Minolta CA-100 or equivalent) except PICTURE: max 30...
  • Page 42 TH-50PB2E...
  • Page 43 TH-50PB2E 9.2.2. YUV white balance adjustment Instrument Name Connect to Setting • HD(1125/60i) W/B pattern (COMPONENT Output) PC IN terminal Picture menu: STANDARD • Color analyzer Panel surface User setting: Normal (Minolta CA-100 or equivalent) except PICTURE: max 30 Steps...
  • Page 44 TH-50PB2E...

  • Page 45: Block Diagram

    TH-50PB2E 10 Block Diagram 10.1. Main Block Diagram DIGITAL CORE SIGNAL PROCESSOR DS SLOT INTERFACE VIDEO IN HDMI DVI SLOT1 L+/- SPEAKER L L,R-1 AUDIO IN AUDIO IN AUDIO IN L+/- SOUND+15V SP AMP LVDS IN CVBS LVDS LVDS IN...

  • Page 46: Block (1 Of 6) Diagram

    TH-50PB2E 10.2. Block (1 of 6) Diagram DS SLOT INTERFACE AUDIO IN L AUDIO IN L AUDIO IN R AUDIO IN R A_OA+- OE+- A_EA+- EE+- A_CLK+- A_OA+- OE+- A_EA+- EE+- A_ED+/- A_CLK+- TX3+/- A_OE+/- TX9+/- 32.768KHz SLOT_RXD A_OD+/- RXD_TU...

  • Page 47: Block (2 Of 6) Diagram

    TH-50PB2E 10.3. Block (2 of 6) Diagram JK2103 JK2102 VIDEO IN HDMI IN DVI IN FACTORY DIGITAL CORE SIGNAL PROCESSOR JK2104 IC2112 AUDIO IN L ANALOG VIDEO SIGNAL AUDIO IN R LVDS DATA A_OA+- OE+- A_EA+- EE+- A_CLK+- 5VRXD_TU 5VRXD_TU...

  • Page 48: Block (3 Of 6) Diagram

    TH-50PB2E 10.4. Block (3 of 6) Diagram DIGITAL CORE SIGNAL PROCESSOR A+9V L OUT+ SP_L+ IC2114 SPEAKER L L OUT- SP_L- VOUT IC2002 SP AMP R OUT+ SP_R+ VIDEO SW L_OUT+ OUT+ PWM 1 L_OUT- SP_R- SPEAKER R R OUT- +1.5V_DDR...

  • Page 49: Block (4 Of 6) Diagram

    TH-50PB2E 10.5. Block (4 of 6) Diagram DIGITAL CORE SIGNAL PROCESSOR IC9002 TEMP SENSOR P3V_I2C2 P+3.3V P3.3V IC9300 PD5L P3.3V SP_R+ VIDEO/PANEL CONTROL SPEAKER R OUT CONTROL DATA IC9304 SP_R- VIDEO DATA FLASH FLASH I/F MEMORY 3.3V_DET_1 VIDEO DATA SP_L+...

  • Page 50: Block (5 Of 6) Diagram

    TH-50PB2E 10.6. Block (5 of 6) Diagram POWER SUPPLY COLD COLD AC CORD Fuse F001 AC Vin PHOTO (Live) Detection COUPLER FILTER SS11 AC INLET CONVERTER T301 FET SW Vsus F301 HOLDER FET SW F15V Relay F15V for prevention STB5V...

  • Page 51: Block (6 Of 6) Diagram

    TH-50PB2E 10.7. Block (6 of 6) Diagram SCAN DRIVE SCAN OUT (UPPER) SUSTAIN DRIVE Reference Voltage SRV_VF5V TPVSUS Vsus Lo : 213V SRV_VSUS Vsus Hi : 218V IC16784,85 Reference Voltage IC14601-03 Vsus Vad = 200 5V(VFG_BASE) PC16897 Reference Voltage SRV_VFO...
  • Page 52 TH-50PB2E...

  • Page 53: Prevention Of Electrostatic Discharge (Esd) 11 Wiring Connection Diagram

    TH-50PB2E 11 Wiring Connection Diagram 11.1. Wiring (1)

  • Page 54: Wiring (2)

    TH-50PB2E 11.2. Wiring (2)

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