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Building the cable: For Vision users who have a
difficult time getting a serial adaptor cable or want to save the money you can
build a parallel port cable to update a Vision. You'll need a DB-25 parallel
port cable, a wire stripper, a multimeter and some wire clips at a minimum. A
soldering iron and a 10 pin .1" square pin receptacle (Digikey part #A26478-ND
see
Digikey ) will be needed for a better, more reusable cable.
10-pin receptacle to connect to 10-pin Vision header
Cut off the female end of the parallel
port cable as you'll need the male end to plug into the PC. Using a multimeter find the wires that correspond to pins 2,4,5,10 & 25 on the male end
of the parallel connector (see diagram below).
Male end of parallel cable
Strip the wires on the cut end of
the parallel cable coming from pins 2,4,5,10 & 25 and solder them to
the 10 pin receptacle. The parallel port wires connect to the 10 pin Vision
square pin header as shown below. Pin 10 of the Vision header is nearest the
green led. When you take the Vision case on/off always
slide it out, being careful not to bend back the IR receiver which protrudes
slightly out the front of the case. Instead of soldering wires to a 10 pin
receptacle you could also use short wire clips to connect the parallel cables
wires to the Vision header (this isn't a great way to connect it but should work
if you're careful).
25 pin parallel port
<-------------------------------> 10 pin Vision
header
pin 2
----------------------------------------------- pin 2
pin 4
----------------------------------------------- pin 3
pin 5
----------------------------------------------- pin 5
pin 10
---------------------------------------------- pin 4
pin 25
---------------------------------------------- pin 1
Running the update:
Download the utility
and unzip it (there are 2 files which need to be kept together). At this time
the utility has only been tested to run on a Windows 2000 machine so it might
work with other Microsoft OS's but we haven't tried it.
Important: The "io.dll"
file looks for a file called "io.sys" in the directory
"c:\WINNT\system32\drivers". If when you attempt to run the utility it complains
about "io.sys" then your "io.sys" file is located somewhere else. Use the
windows find file utility to find it, then create this directory on your c:
drive and copy it there to get the utility to work. (We're working on an
improvement to eliminate this problem in the future).
The parallel port update will preserve your current settings
but you may want to jot them down if you've spent a considerable time
calibrating it as a backup.
Connect up your PC and your Vision with your parallel port cable and plug the power supply
into the Vision. On the PC double click (run) the downloaded
utility named vispp_up020904.exe. It will start updating. If a checksum error occurs try closing the
window, check your connections and rerunning the utility.
About the updates: The most current firmware upgrade
for the Vision and VisionPro is revision 020904. You can check your
firmware revision by pressing "menu",0,9,0,3 on your remote.
The updates from 062903 and on fix
the ICP and CUE problems mentioned on Secrets of Home Theater and Hi Fidelity
website.
CUE (chroma upsampling error) is a problem found with many DVD players but not
all so this
may not be an issue for you. ICP (interlaced chroma problem) is found with all
DVD players and can occasionally be seen on highly saturated (strongly colored) edges.
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