Sharp 4T-B70CJ1U Service Manual
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Sharp 4T-B70CJ1U Service Manual

4k ultra hd tv
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SHARP SERVICE MANUAL
4K ULTRA HD TV
MODEL: 4T-B70CJ1U

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Summary of Contents for Sharp 4T-B70CJ1U

  • Page 1 SHARP SERVICE MANUAL 4K ULTRA HD TV MODEL: 4T-B70CJ1U...

  • Page 2: Table Of Contents

    Content CHAPTER 1. SPECIFICATIONS ..............1 [1] SPECIFICATIONS ................1 [2] DIMENSIONS .................. 3 CHAPTER 2. Removing of Major Parts ............4 [1] Removing of Major Parts ..............4 CHAPTER 3. ADJUSTMENT PROCEDURE ........... 17 [1] ADJUSTMENT PROCEDURE [2] SERVICE MODE ................[3] SOFTWARE UPGRADE PROCEDURE ..........

  • Page 3: Chapter 1. Specifications

    CHAPTER 1. SPECIFICATIONS [1] SPECIFICATIONS Panel Size 70" Backlight Type D-LED Resolution 3840 x 2160 Refresh Rate 60Hz Response Time 8.5 ms Color Gamut 97% REC709 Number of Colors 8-bit+FRC, 1.07B colors Brightness (Typ.) 280nits Contrast Ratio 4,000 : 1 Dynamic Contrast Ratio 200,000 : 1 Backlight Zones...
  • Page 4 Terminal RF Input HDMI 1.4 Input / HDCP 1.4 (For 2K) 2 (HDMI 1 with ARC) HDMI 2.0 Input / HDCP 2.2 (For 4K) Video+L/R Input(φ3.5mm) AV Input RS232C Headphone Output(φ3.5mm) USB 2.0 (1.5A) Ethernet Software Android TV Play Store YouTube NetFlix Google Cast...

  • Page 5: Dimensions

    FCC, BETs-7 WiFi / Bluetooth FCC/IC ID Energy Saving NRCan, CEC [2] DIMENSIONS Bezel Width Model T/R/L Bottom (T/S/Bottom) 4T-B70CJ1U 1568.48 904.92 976.92 56.09 286.9 72.29 1390.07 0.8/0.8/2.5 VESA-compatible wall bracket TV screen size (Inches) Screw type (millimeters)(W*H) 70"...

  • Page 6: Chapter 2. Removing Of Major Parts

    CHAPTER 2. Removing of Major Parts [1] Removing of Major Parts STAND FEET REMOVAL: 1.- Remove the screw M5X14 (2 per stand feet)
  • Page 7 2.- Take the stand and slide out downwards from the TV set. Note: Repeat operation in the 2nd stand UNSCREW THE REAR COVER ASSY: 1.- Remove the 4 screw 3X4.5and 2 screw T3x9, around the I/O cover area and AC-INLET.
  • Page 8 2.- Remove the 4 VESAscrews M6X12 3.- Remove the 19 screws M3X8 at the rear cover area.
  • Page 9 REMOVE THE REAR COVER ASSY: 1.-Use stand hole to pull rear cover and create GAP at corner area. 2.- Pull the Rear Cover from the bottom area and side area. ① The outer periphery of the front cover and CAB-B are fitted with hook , lift while pushing slightly inward.
  • Page 10 3.- Finally use team-job to remove the Rear Cover completely. REMOVE SPEAKERS, MAIN Board 、 Power Board 、 KEY Board 、 T-CON Board、 WIFI Board and Speakers.
  • Page 11 • Speakers 1.- Disconnect the cable of speaker 2.- Slide out the stud 3.- Repeat operation in the 2 speaker...
  • Page 12 • Main Board and WIFI board 1.- Disconnect the connection of the cable from the MB and WIFI board (Red rectangle). 2.- Detach the I/O cover from the MB...
  • Page 13 3.- Remove 5 screws M3X6 in the main area (Redcircle).
  • Page 14 4.- Unlock the hook (Red rectangle) and remove the WIFI board. 5.- Remove the screws (1pcs +PSW M3X8 [Red circle])and remove the WIFI holder.
  • Page 15 • PSU 1.-Disconnect the connection of the cable from the PSU (Red circle). 2.- To remove the PSU, unscrew 5 screws M3X6(Red circle)and 2 screws M3X8(Blue circle)
  • Page 16 • T-CON Board 1.- Disconnect the connection of the cable from the T-con (red rectangle) 2.- To remove the board, unscrew 6 screws M3X6( Yellow circle) • Key pad 1.- Disconnect the connection of the cable from the key pad (red rectangle)
  • Page 17 2.- To remove the key board, unscrew 2 screws T3X6 (Yellow rectangle)and 2 screws (red rectangle) • IR Board • 1.- Disconnect the connection of the cable from the IR board (red rectangle) •...
  • Page 18 2．Pull open the hook of IR Lens，then take IR Board out. WIRE DRESSING LAY-OUT...

  • Page 19: Chapter 3. Adjustment Procedure

    CHAPTER 3. ADJUSTMENT PROCEDURE [1] ADJUSTMENT PROCEDURE 1. HOW TO START ADJUSTMENT PROCESS MODE WhileholdingdowntheINPUTandVolumeDOWNkeysatthesametime,plugintheACcordtoturnonthepower. (“K” standing for inspection process mode is displayed on the upper left position of thescreen.) Press the Channel DOWN and Volume DOWN keys at the same time. (The adjustment process mode screenappears.) 2.
  • Page 20 4. LIST OF ADJUSTMENT PROCESS MODE MENU (*) The page number will be changed at the running change. For the number to be changed, please check ( ). PAGE(*) PAGE ITEM FUNCTION NUMBER TITLE Main version Main Software Version. INFO (Detail) Eel_ATSC_Pack**_v*.**(****) V*.** : SW version (****) : Boot version...
  • Page 21 PAGE PAGE ITEM FUNCTION NUMBER TITLE Dimmer PT1 Dimmer Temperature Threshold 1 Dimmer PT2 Dimmer Temperature Threshold 2 Dimmer PD1 Dimmer Duty Threshold 1 Dimmer PD2 Dimmer Duty Threshold 2 SERIAL NUMBER Display the serial number MAC ADDRESS Display the number of MAC ADDRESS WIFI MAC ADDRESS Display the number of MAC ADDRESS HDCP1.4...
  • Page 22 (MEMO) When cannot read the white balance adjustment value, set the average value by the same procedure ad when replacing the LCD panel. (When replacing the LCD panel) After replacing the LCD panel, set the following average value in the 3/7 [WB ADJ]page. Aftersetting,changethe"ADJDATASTORE"toONandpresstheENTERkeyontheremotecontrolinordertosetaflagindicatingthe completed / incomplete WB adjustment which is heldinside.

  • Page 23: Service Mode

    ■FACTORY SETTING After completing the factory setting, pull out the AC cord to complete the setting. (Caution) - Do not turn on the power after completing the factory setting. If the power is turned on, configure the factory settingagain. - Do not insert the USB memory when performing the Factory setting.

  • Page 24: Software Upgrade Procedure

    [3] SOFTWARE UPGRADE PROCEDURE 1. SOFTWARE VERSION UPGRADE When replacing the Main unit, make sure to update the latest software. The software can be upgraded by using a general-purpose USB memory device. The following are the procedures for upgrading the software. 2.
  • Page 25 Press ▲/▼ on the Manual Update screen to select "USB Update", and then press ENTER. Menu -> Information -> Software Update -> Manual Update ->Usb Update -> Start Press ENTER to start checking the data in the USB memory device. 1)During the data checking, "Checking"...
  • Page 26 Check the firmwareversion. (Press “Menu button” -> “Information” -> “Identification” -> Version : SW x.xx) 4T-B70CJ1 TROUBLE SHOOTING 4 - 24...

  • Page 27: Chapter 4.Troubleshooting Table

    CHAPTER 4.TROUBLESHOOTING TABLE 1. HOWTORESPONDBYTROUBLESYMPTOM(INCASEOFNON-DEFECTIVEMODE) Defective symptom Action No power. Check if you pressed POWER on the remote controlunit. Is the AC corddisconnected? Has the power been turnedon? Unit cannot be operated. - External influences such as lightning, static electricity, may cause improper operation.
  • Page 28 Defective symptom Action The TV sometimes makes a - This is not a malfunction. This happens when the cabinet slightly crackingsound. expands and contractsaccording to change in temperature. This does not affect the Monitor's performance. Some Internet functions used on - The TV has only limited functions compared with regular PC browsers.
  • Page 29 2. HOW TO RESPOND BY TROUBLE SYMPTOM (IN CASE OF DEFECTIVEMODE) Description No Power (front LED failure to light up) or no startup (front LED failure to turn red to green) With [RF]signalinput No video onscreen(1) With <Video>signalinput No video onscreen(2) With <HDMI1/HDMI2>signalinput No video onscreen(3) No audio heard (1)
  • Page 30 2-3. With <Video>signalinput No video onscreen(2) 3 > No external input video onscreen < INPUT ↓ Yes Is INPUT 3 selected on the input select Select INPUT 3 on the input select menu screen? menu screen to pick up the right input ↓...
  • Page 31 2-5. No audio heard (1) No sound in the UHF/VHF reception. ↓ Yes Is the IF output from the tuner pin(6,7,8,9) Check TU1102 and its peripheral circuits. of TU1102 as specified ? ↓ Yes Is there IF input at pin K1 & K2 of IC3301 ? Check the circuit between TU1102 &...
  • Page 32 2-6. No audio heard (2) No external audio heard<INPUT3> Is there the L-ch audio signal input from pin (4) of input terminal J502 to pin (D4) ofIC3301? Is there the R-ch audio signal input from pin (1) of inputterminal J502 to pin (D5) of IC3301? ↓...
  • Page 33 2-7. No audio heard (3) No HDMI sound heard <HDMI1/HDMI2 > (*HDMI1 / HDMI 2 is digital audio ) ↓ Yes Refer to “ ( HDMI1 / HDMI2 )is no external Does the HDMI image appear on screen ? input video screen (HDMI)” ↓...
  • Page 34 Power unit operation check for 4T-B70CJ1U Are the power cord and harness in the Power cord and harness in the unit unit connected Line filter unit? L4 ,L6,L6 ,L7 or RT1,RT2 If F1 normal is out of order? Does DB1 output 155V when AC...

  • Page 35: Chapter 5. Major Ic Informations

    CHAPTER 5. MAJOR IC INFORMATIONS [1] MAJOR IC INFORMATIONS IC3301(RH-IXE078WJQZQ) --- RealTek , RTD2991 4T-B70CJ1 TROUBLE SHOOTING 4 - 33...
  • Page 36 4T-B70CJ1 TROUBLE SHOOTING 4 - 34...
  • Page 37 4T-B70CJ1 TROUBLE SHOOTING 4 - 35...
  • Page 38 IC1702 (VHIBD28623M-1Y) --- Rohm, BD28623MUV S-out IC504 (VHITPA6139A-1Y) ---TI, TPA6139A HP-out 4T-B70CJ1 TROUBLE SHOOTING 4 - 36...
  • Page 39 IC502 (VHIM3221EIP-1Y) --- TI, MAX3221EIPWR 232c IC8101, 9604, 9607, 9608 (VHITPS56320-1Y) --- TI, TPS563200DDCR , Power 4T-B70CJ1 TROUBLE SHOOTING 4 - 37...
  • Page 40 IC3501,3502 (RH-IXE098WJQZQ) --- SAMSUNG, K4B2G1646F-BYMA, DDR 4T-B70CJ1 TROUBLE SHOOTING 4 - 38...
  • Page 41 IC3101 (RH-IXE112WJQZQ) --- SAMSUMG, KLM4G1FETE-B041, eMMC 4T-B70CJ1 TROUBLE SHOOTING 4 - 39...
  • Page 42 IC8102 (RH-IXE211WJQZY) --- DIALOG, AS3824E1-ZQFT LED Drive 4T-B70CJ1 TROUBLE SHOOTING 4 - 40...
  • Page 43 4T-B70CJ1 TROUBLE SHOOTING 4 - 41...
  • Page 44 Q8101-8108 (RH-TXA102WJQZY) --- Rohm, SH8KA4TB 4T-B70CJ1 TROUBLE SHOOTING 4 - 42...

  • Page 45: Chapter 6.Block Diagram/Wiring Diagram

    CHAPTER 6.BLOCK DIAGRAM/WIRING DIAGRAM [1] BLOCK DIAGRAM 4T-B70CJ1 TROUBLE SHOOTING 4 - 43...

  • Page 46: Power Management Block Diagram

    [2] POWER MANAGEMENT BLOCK DIAGRAM Power board block diagram as below. PCB is a single layer board. There are 2 outputs in the power board, one is +13V interface signals for M/B system, the other +35V is converter output for LCM. AC INPUT DC output Fly back...

  • Page 47: Chapter 7.Printed Wiring Diagram

    CHAPTER 7.PRINTED WIRING DIAGRAM [1] MAIN & LED UNIT PRINTED WIRING BOARD MAIN TOP 4T-B70CJ1 TROUBLE SHOOTING 4 - 45...
  • Page 48 MAIN BOTTOM 4T-B70CJ1 TROUBLE SHOOTING 4 - 46...

  • Page 49: Power Unit Printed Wiring Board

    [2] POWER UNIT PRINTED WIRING BOARD POWER TOP 4T-B70CJ1 TROUBLE SHOOTING 4 - 47...
  • Page 50 POWERBOTTOM 4T-B70CJ1 TROUBLE SHOOTING 4 - 48...

  • Page 51: Key Unit Printed Wiring Board

    [3] KEY UNIT PRINTED WIRING BOARD Keypad Board Top Keypad Board Bottom [4] IR UNIT PRINTED WIRING BOARD IR Board Top IR Board Bottom 4T-B70CJ1 TROUBLE SHOOTING 4 - 49...

  • Page 52: Chapter 8.Schematic Diagram

    CHAPTER 8.SCHEMATIC DIAGRAM [1] MAIN SCHEMATIC DIAGRAM 4T-B70CJ1 TROUBLE SHOOTING 4 - 50...
  • Page 53 4T-B70CJ1 TROUBLE SHOOTING 4 - 51...
  • Page 54 4T-B70CJ1 TROUBLE SHOOTING 4 - 52...

  • Page 55: Power Schematic Diagram

    [2] POWER SCHEMATIC DIAGRAM [3] IR+LED+ALS DRIVER SCHEMATIC DIAGRAM 4T-B70CJ1 TROUBLE SHOOTING 4 - 53...

  • Page 56: Key Schematic Diagram

    [4] KEY SCHEMATIC DIAGRAM 4T-B70CJ1 TROUBLE SHOOTING 4 - 54...

  • Page 57: Chapter 9.Parts Guide

    CHAPTER 9.PARTS GUIDE [1]SPARE PARTS LIST SHARP NA 4T-B70CJ1U Item Description Quantity 1A52JD000-GB2-G-V0 BEZEL ASSY SHARP B2B 70 006-1003-1676 MIDDLE CHASSIS ASSY BTM L DE70 006-0003-1676 006-1003-1678 MIDDLE CHASSIS ASSY BTM R DE70 006-0003-1678 006-1003-1694 MIDDLE CHASSIS ASSY SIDE DE70...
  • Page 58 RUNTKB293WJZZ WiFi Module 1A314AN00-46C-G STAND BASE ASSY LEFT,CAR0X 1A314AP00-46C-G STAND BASE ASSY RIGHT,CAR0X 351062700-33T-G MB to Power harness 351128300-0H5-G 351128200-52F-G MB to T-CON unit harness (LVDS) 351128100-GWV-G 35105HU00-33T-G MB to Key unit harness(A) 35105HV00-33T-G MB to Key unit harness(B) 35111N000-GWV-G MB to LED/IR unit harness 351062A00-33T-G MB to Speaker box harness 351062H00-33T-G...

  • Page 59: Cabinet Parts

    [2]CABINET PARTS 4T-B70CJ1 TROUBLE SHOOTING 4 - 57...

  • Page 60: Supplied Accessories

    [3]SUPPLIED ACCESSORIES 4T-B70CJ1 TROUBLE SHOOTING 4 - 58...

  • Page 61: Packing Parts

    [4]PACKING PARTS 4T-B70CJ1 TROUBLE SHOOTING 4 - 59...
  • Page 62 4T-B70CJ1 TROUBLE SHOOTING 4 - 60...
  • Page 63 4T-B70CJ1 TROUBLE SHOOTING 4 - 61...

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