Quantcast CF-18 screen swap

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  1. #1
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    Default CF-18 screen swap

    Hi all,

    I have two CF-18 touchscreen (not digitizer) tablets. One machine 1, the touchscreen doesn't work (selects whatever is at the extreme bottom of the screen) and on the other machine it looks like the backlight has gone. The second machine had a bit of a knock and, since that time, I can vaguely see the Panasonic logo come up upon power-on, but nothing else.

    My question is - Can the good screen from machine 1 be moved across to machine 2 (leaving the touchscreen elements where they are). If so, is there a tutorial somewhere how to do this?

    Thanks, Malcolm

  2. #2
    The Curmudgeon
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    Default Re: CF-18 screen swap

    They can but to what end? If you have a good backlight with a bad touchscreen, and a good touchscreen with a bad backlight you are going to have to shift some components around to get the good backlight with the good touchscreen. Personally, I'm thinking that moving the backlight parts would be easier than splitting the touchscreen and the LCD. Someone will be along soon with a copy of the service manual. Post your full model number CF-18xxxxxxx to get the ball rolling.Welcome to the nut house
    CAP
    "Opportunity is missed by most people because it is dressed in overalls and looks like work." Thomas Edison
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  3. #3
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    Default Re: CF-18 screen swap

    As Cap says post the full model numbers

    I am guessing that the one with a failed touchscreen is a 1.2mHz model

    The most likely fix for cf-18 #2 with a dead backlite is an inverter
    I'm not shy, I'm just studying my prey

  4. #4
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    Default Re: CF-18 screen swap

    Machine #1 = CF18KHHZBBE
    Machine #2 = CF18DHAZXKM

    Machine 1 is a UK machine and #2 is a US model.

    M.

  5. #5
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    Default Re: CF-18 screen swap

    Quote Originally Posted by Tomcat57 View Post

    I am guessing that the one with a failed touchscreen is a 1.2mHz model

    The most likely fix for cf-18 #2 with a dead backlite is an inverter
    Yes, it's a 1.2mHz machine (1.5GB/320GB). Knowing that the inverter probably gives out a very high voltage, how do you test it?

    M.

  6. #6
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    Default Re: CF-18 screen swap

    You disassemble both lids
    http://www.modly.net/servicemanuals/...ice-Manual.pdf
    Remove the inverter from the 1.2 machine and try it in the other
    I think the inverters are the same
    I'm not shy, I'm just studying my prey

  7. #7
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    Default Re: CF-18 screen swap

    OK, it wasn't the inverter. In the end, as I had both machines in bits, I swapped the screens and the one with the dead backlight now works, so it's the backlight itself that is faulty (can that be replaced separately?)

    Now I have to order a 1Gb DDR1 SODIMM for the Mk2 as the card in the Mk4 is DDR2.

    I should have tried this when they were still in bits, but would the touchscreen bevel from the Mk2 work in the Mk4? If so, I might swap everything back to have the Mk4 fully working. Where can I buy a replacement screen for the Mk4?

  8. #8
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    Default Re: CF-18 screen swap

    Quote Originally Posted by Bumpydog View Post
    Machine #1 = CF18KHHZBBE
    Machine #2 = CF18DHAZXKM
    model number
    CF18KHHZBBE
    MSP: $4,239.00 (USD)
    Status: DISCONTINUED
    DESCRIPTION:
    Intel Pentium M 753 1.2GHz ULV (Centrino), 10.4" XGA High Bright Touch Screen, 60GB HDD, 512MB RAM, Intel 802.11a+b+g WLAN, Bluetooth, Dual Hi-Gain Antenna Pass-through Connectors, Windows XP Pro SP2, No Optical Drive

    model number
    CF-18DHAZXKM
    MSP: $3,783.00
    Status: DISCONTINUED
    DESCRIPTION:
    Pentium M 1.1GHz ULV (Centrino), 10.4" XGA High Bright Transmissive Touch Screen , 40GB HDD, 256MB RAM, Intel 802.11b+g WLAN, Dual Hi-Gain Antenna Pass-through Connectors, Windows XP Pro
    CF-28PCJGZPM Mk2 (w/Backlit Rubber Kbd.)
    CF-29EWPNZBM Mk2 (ex-SAPD)
    CF-29HTM50BM Mk3 "SBC" (x 4)
    CF-29LTP57BM Mk4 - Rare "at&t" Model
    CF-29NDLGFBM Mk5 (2.25GB RAM + TS added)
    CF-M34JA2BEM Mk2 (192MB RAM)
    CF-M34JA2BEMCDP Mk2 (192MB RAM)
    CF-M34CGFZKM Mk7 (1.25GB RAM)
    CF-P2T1HBF7E Mk1

    And more to come ....
    -

  9. #9
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    Default Re: CF-18 screen swap

    [QUOTE=Bumpydog;6920117]OK, it wasn't the inverter. In the end, as I had both machines in bits, I swapped the screens and the one with the dead backlight now works, so it's the backlight itself that is faulty (can that be replaced separately?)



    From my experienced on changing the backlight of an LCD is that the Cf-18 is the most easiest of them all. You've got only to take off the tape on the buttom of the lcd and the backlight with its metal housing will come off completely without disturbing(allignment) of the LCD layer.


    ohlip
    CF-19MK3 toughbook(LED backlight) dual boot xp&win7, CF-30MK3, CF-31AGA..8GB RAM, 250GB SSD, 50Channel U-blox GPS, Few cf-29's, CF-m34's, cf-18's, CF-28STM(1.0Gb RAM), the new member Gobook XR-1(2.0Ghz Custom EM408 GPS sirf III with 25dB active antena) & Getav V100(1.4ghz) core 2 duo
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