Toshiba P42LSB Service Manual

Lcd flat panel data display unit

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SERVICE MANUAL
LCD FLAT PANEL DATA DISPLAY UNIT
P42LSA+
P47LSA+
P42LSB
P47LSB
1

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Summary of Contents for Toshiba P42LSB

  • Page 1 SERVICE MANUAL LCD FLAT PANEL DATA DISPLAY UNIT P42LSA+ P47LSA+ P42LSB P47LSB...
  • Page 2: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS FOR USER······································ 3 P42/47LSA+ / LSB Block Diagram ··········································42 PRODUCT SAFETY NOTICE ················································· 3 Trouble Shooting ··································································43 IMPORTANT ········································································ 5 P42LSA+ / LSB PARTS List ····················································44 WARNING / CAUTION ·························································· 6 P47LSA+ / LSB PARTS List ····················································45 PRECAUTIONS FOR USE AND MAINTENANCE ····················...
  • Page 3: Safety Precautions For User

    SAFETY PRECAUTION WARNING: Service should not be attempted by anyone unfamiliar with the necessary precautions on this projector. The following are the necessary precautions to be observed before servicing this chassis. 1. An isolation Transformer should be connected in the power line between the projector and the AC line before any service is performed on the projector.
  • Page 4 When installing or move the equipment: WARNING Installation or transportation of this equipment shall be entrusted to vendors qualified by " Toshiba Lightning and Technology ". Installation and transportation by parties other than qualified dealers may result in injury or damage of the equipment.
  • Page 5: Important

    SAFETY PRECAUTIONS FOR USER IMPORTANT Please Take Note EXCLUSION CLAUSE Toshiba shall under no circumstances be liable for loss and/or damage to the product caused by: Fire Earthquake Accidental damage Intentional misuse of the product Use of the product in improper conditions...
  • Page 6: Warning / Caution

    SAFETY PRECAUTIONS FOR USER Equipment Use WARNING Do not remove the rear cabinet cover, as there are high-voltage parts in the unit. Touching components inside may result in electric shocks. End user should not repair or reconstruct the equipment. Never attempt to do so, otherwise fire disaster or electric shocks may result. For repair, contact your dealer.
  • Page 7 SAFETY PRECAUTIONS FOR USER For servicing, maintenance and inspection WARNING If dust or dirt is visible on the blades or the blade clamping face of the power plug, clean the plug or blade clamping face before connection. Otherwise, fire may occur due to lowering of insulation of the power plug. CAUTION Make a maintenance contract with the dealer and entrust the dealer with periodical inspection and adjustment.
  • Page 8: Precautions For Use And Maintenance

    Request to User Fragile plastic panel The P42LSA+/P47LSA+/P42LSB/P47LSB have a plastic screen and even a small crack on the plastic panel can cause fatal screen damage. Please be careful when handling and always use two people to move or lift up product.
  • Page 9: General Descriptions

    Always turn off the power when start to do cleanings. GENERAL DESCRIPTIONS FEATURES 42-inch (P42LSA+/P42LSB), 47-inch (P47LSA+/P47LSB) direct view LCD flat panel display P42xxxx/P47xxxx are direct view Liquid Crystal Display panel display units with HDTV, 1920x1080 resolution element. Input capability From PC video output card a VGA to UXGA signal is generated.
  • Page 10: Function Of Panel / Push Buttons

    * Steady geometric alignment * 5 kinds of color setting for quasi 3200K, 5400K, 6500K, 9300K and USER Low power consumption Power consumption of the set is reasonably low as: P42LSA+/P42LSB: 250W P47LSA+/P47LSB: 300W FUNCTION OF PANEL / PUSH buttons...
  • Page 11: P42Lsa+ / Lsb Dimensions

    P42LSA+ / P42LSB DIMENSIONS Size: mm (inch) 122.8 mm (4.84 inch) 240 mm 440 mm(17.34 inch) (9.46 inch) 1026 mm(40.42 inch) 200 mm 200 mm 200 mm (7.88 inch) (7.88 inch) (7.88 inch)
  • Page 12: P47Lsa+ / Lsb Dimensions

    P47LSA+ / P47LSB DIMENSIONS Size: mm (inch) 126.2 mm (4.97 inch) 280 mm 520 mm (20.5 inch) (11 inch) 1139.4 mm (44.86 inch) 200 mm 200 mm 200 mm (7.88 inch) (7.88 inch) (7.88 inch)
  • Page 13: Function Of I/O Panel

    FUNCTION OF I/O PANEL Input / Output terminals of LSB model (HD-SDI) Input / Output terminals of LSA+ model VIDEO INPUT Three kinds of Video signal selection as Composite, Y/C or YUV Signal Input Terminal Type Suitable signals CVBS-IN US-Pin (RCA) NTSC/PAL S-VIDEO-IN S (Y/C) mini DIN...
  • Page 14 FUNCTION OF I/O PANEL Input / Output terminals of LSB model (HD-SDI) Note: Input / Output terminals of LSA+ model 1. BNC, Category-5, Video cables are not included. 2. DVI terminal Analog input is not used. 3. Catrgory-5 input/output are Link only, external signal is not properly be worked.
  • Page 15: Selection Of The Signals

    SELECTION of the SIGNALS Video input VIDEO-1 Composite Video signal, US-Pin (RCA) NTSC/PAL VIDEO-2 Y/C (S-VIDEO) S connector NTSC/PAL VIDEO-3 Y-Pb-Pr(Y-Cb-Cr) YUV mini-DIN NTSC/PAL/up to 480p Note: Y-Pb-Pr (Y-Cb-Cr) terminal can accept up to 720p signal. Higher resolution signals are Supplied through RGB terminal.
  • Page 16: Specifications

    SECIFICATIONS Model name P42LSA+ / P47LSA+ / P42LSB / P47LSB Type 42-inch, 47-inch flat panel LCD display unit Acceptable signals NTSC/PAL/PC Refer to page 13. Image device 16:9 LCD panel Light source fluorescent back light lamps Resolution 1920 x 1080 dot x RGB...
  • Page 17: Acceptable Signal Type

    ACCEPTABLE SIGNAL TYPES Sync Horizontal (dot) Vertical (line) polarity Digital clock Video Mode Analog (kHz) (Hz) (Optional) (MHz) VGA50 VGA 640x480 26.250 50.000 21.000 31.469 59.940 25.175 VGA 640x480 37.861 72.809 31.500 37.500 75.000 31.500 SVGA 800x600 31.400 50.000 33.158 1056 35.156 56.250 36.000...
  • Page 18: Wireless Remote Control Operation

    WIRELESS REMOTE CONTROL OPERATION Normal Adjust Area Pro-Adjust Area MENU: Enter Adjust Menu ADJ: Enter to Adjust Up button: move UP Mode: Mode selection (memory recall) Left button: move LEFT SPECIAL: Enter Special mode Right button: move RIGHT SERVICE: Enter service mode Down button: move DOWN WB: White Balance selection ENTER: Value Enter or Set...
  • Page 19 Effective range • Point the remote control at remote sensor on LCD monitor. About the remote control • Do not drop, shake or bump. • Do not wet, do not place on wet materials. • Do not dismantle. • Do not place in locations exposed to high temperature or high humidity levels. Remote control hand unit emits Infra-Red light, modulated by the internal codes.
  • Page 20 All the functions below are remote control white area/side key possible operations. As for the Pro-Adjust buttons (black colored area), refer to the RS232C section, from P.27, the OSD becomes different from Normal adjustment mode. Main Menu: Contains 5 different page icons to make adjustments Press the [MENU] then OSD picture appears, this icon indicates “information”...
  • Page 22: Entering To The Adjustment Menu

    WIRELESS REMOTE CONTROL OPERATION When [MENU] button is pushed, Display enters Display Entering to the adjustment MENU Information page as below left, no adjustment functions placed in here. By using [DOWN] key, below right picture Arrow mark (red) indicates appears, this is input selection page. “Selected and Highlighted”...
  • Page 23 WIRELESS REMOTE CONTROL OPERATION The below left shows when Contrast is selected and high-lighted, then [LFFT]/[RIGHT] are to adjust values. Use [EXIT] when done. When exit from this DISPLAY mode, then the size of frame becomes smaller, refer to the previous page, lower right picture where DISPLAY frame is smaller. By using [RIGHT] key, selection moves to the IMAGE area.
  • Page 24 WIRELESS REMOTE CONTROL OPERATION Picture below right shows the COLOR mode, this is to select Gamma Correction for Off-Expand-Compress and Color temperature 3200K/5400K/6500K/9300K and User. At User position, RGB adjustments are possible using User Color R,G,B adjustment selection. To do one of these adjustment, [DOWN] key to high-light the selection and use [LEFT] or [RIGHT] for value.
  • Page 25 WIRELESS REMOTE CONTROL OPERATION In COLOR adjust, this is the same to Main This below picture shows PiP CONTROL. Setting but for PiP image. As same as the Adjustment item selection is done by [Down] key for. Adjustments in previous page, any adjustment PiP on-off, Size and its position.
  • Page 26 WIRELESS REMOTE CONTROL OPERATION Other Setting Page This page is to do Factory Reset, Picture retention reduction, Language selection, light sensor selection and its value adjustment, Source Automatic detection and DPMS Control. Factory Reset, Picture saturation Reset This page will reset all the adjustment values to the original factory pre-set values when used.
  • Page 27: Rs232C Pc Control

    FIRMWARE CONFIRMATION OPERATION Firmware confirmation By using left-right button on the wireless remote, push L-L-R-R-L-R to display firmware version on the screen. To escape from this mode, the main rocker power switch needs to be shut-off and turned ON again with an RGB signal connected to display. Without RGB signal supplied, test mode continues. Note: There are two different control methods;...
  • Page 28: Setting Id

    RS232C control When [OFFSET] or [GAIN] Button is clicked in adjust mode the 1 entry will indicate the “red” adjustment or default adjustment. In this case, we use the push [up] / [down] buttons located on the right side of the wired remote control to do an adjustment, then press [ADJ.G] or [ADJ.B] button for other color selection.
  • Page 29: Adjust Mode

    RS232C CONTROL Press the [ID.SET] button. The master panel whose ID is already assigned will not respond but the 2 panel without an ID # will activate to have ID.02. The same method is used to assign ID numbers to all the remaining panels.
  • Page 30 There are two stages for white balance or color balance adjustment to allow adjustment of low-signal- level and high-signal-level portions of the image. Use external test signal software or signal source for the picture, then enter to adjust mode. Low signal level: Brightness ( common for Video/RGB ) Offset ( RGB only ) High signal level:...
  • Page 31: Function In Special Mode

    MODE In normal mode, this button works to recall memory patterns. Press [MODE], then [ 1 ] – [ 9 ] to select. User picture effect Memory This is a feature which memorizes MAG, LAYOUT, POSI. and INPUT selections. One picture effect is Stored in one memory position with 9 user memory positions are available.
  • Page 32: Function In Service Mode

    is added, by remote control use . When such magnification as 2x2 is applied, all the pictures appear as left top position, with Layout of 1-1. Selecting [LAYOUT] then Horizontal and Vertical number key will shift the image. Functions in SPECIAL mode There are several, not so common;...
  • Page 33: Control Via Rs232C

    At the time to escape from ADJUST mode to Normal mode, OSD indicates [F] key but ignore this line. RS232C External Command Control by PC Toshiba will provide, upon request, a user risk, free control software, Cube Commander for adjustment purpose.
  • Page 34 Control Commands List: Table : 1 Standby mode (Command to be used in standby mode ) Item Contents Key(CMD**) POWER Turning power ON PWR PON PWR: Alternation switch command PON: Direct switch command An example of Power on for all the cubes: 02h’,‘**’,‘PON’,‘03h (hex 02 2A 2A 50 4F 4E 03). Commands used in - Normal Mode (with Hex codes) Table: 2 Function...
  • Page 35 02h, (ID), VDW, 03h ADJ. DOWN Move down - or decrease data value 02 (ID) 56 44 57 03 02h, (ID), VLF, 03h ADJ. LEFT Move left 02 (ID) 56 4C 46 03 02h, (ID), VRG, 03h ADJ. RIGHT Move right 02 (ID) 56 52 47 03 Use the above ADJ commands for the following functions 02h, (ID), CNT, 03h...
  • Page 36 Corrections To Change TEST PATTERN - use LAYOUT LEFT & LAYOUT RIGHT To Adjust Position - use LAYOUT UP, DOWN, LEFT & RIGHT commands Contrast & Brightness work normally with the RGB input - no separate R, G, B adjustments Commands used in - Service Mode (with Hex codes) Table: 4 Enter Adjust Mode - then Service Mode...
  • Page 37: Status Report Z - Commands

    02h, (ID), VN0, 03h 02 (ID) 56 4E 30 03 02h, (ID), VN4, 03h Key Switch Mode 02 (ID) 56 4E 34 03 02h, (ID), VN1, 03h 02 (ID) 56 4E 31 03 02h, (ID), VN0, 03h 02 (ID) 56 4E 30 03 02h, (ID), VN5, 03h Video AGC Mode 02 (ID) 56 4E 35 03...
  • Page 38 When an adjustment of Red-Contrast is needed on #3 display, 02h, ‘03’ , ‘AJY’, 03h 02 30 32 41 4A 59 03 Pause 02h, ‘03’ , ‘CNT’ , 03h 02 30 32 43 4E 54 03 Pause 02h, ‘03’ , ‘SLR’ , 03h 02 30 32 53 4C 52 03 Pause 02h, ‘03’...
  • Page 39: Ascii - - Hex Conversion Chart

    “ ZRV 5A 52 56 ##h, ##h, ##h V. Resolution When Z-command has been sent, then the cube will send the information back to PC by the same format but repeating the command once, then followed by answer. STX(02h) ID # ETX (03h) ex.: 02h, ‘01’, ‘ZPW’, ‘pon’, 03h 1 Byte...
  • Page 40: Disassemble

    ( ¥ = back-slash ) Then it might be convenient to prepare these sub-directory and file location. C: ¥ gm1601FW ¥ ISP ¥ Batch --- FlashRom_8.txt C: ¥ LCD Holder --- rd_monitor_LHA_42&47.hex --- rd_monitor_LSA_27&32.hex --- rd_monitor_LSA+_42&47.hex When the new firmware is prepared, only one of these, such as ‘rd_monitor_LSA+_42&47.hex’ will be sent. The rewrite software needs to place a file by ‘txt’...
  • Page 41 A version up-grade can also be done by RS232C firmware rewrite operation. The P42LSA+ and P47LSA+ firmware is the same since both panels have the same resolution, 1920x1080. This is also the same to P42LSB and P47LSB. There is no compatibility between...
  • Page 42: P42/47Lsa+/Lsb Block Diagram

    P42/47LSA+/LSB Block Diagram Power Supply 5V: not used 18V: Main process 24V: Lamp ballast Lamp Power CN1 has 2 more wires, this is Master and all the others CN2 are slave connections. Do not mix CN1 and CN2. RS232C Baud rate is set to 9600 baud.
  • Page 43: Trouble Shooting

    When the picture appeared as solid vertical or horizontal lines, the LCD drive circuit or LCD might be damaged. In this case, LCD panel assembly replacement is necessary. Please contact the Toshiba dealer for repair action. Discard of the product Please refer to the page 5, this product has fluorescent lamps inside that contain a small amount of mercury in liquid or vapor form.
  • Page 44: P42Lsa+ / Lsb Parts List

    P42LSA+ Mechanism and Parts...
  • Page 45: P47Lsa+ / Lsb Parts List

    P47LSA+ Mechanism and Parts...

This manual is also suitable for:

P47lsbP42lsa+P47lsa+

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