Fastlane Z3 errors

[Gaeokerena]

Can anyone help

I have just got hold of a Fastland Z3 card and it is missing some components.

(cue my total lack of electrical knowledge..........!)

Its the long yellow line on the right of the picture (3 pieces I believe). The card has the sockets, but no components

http://www.amiga-hardware.com/fastlanez3_2_big.jpg

1. What the hell are they?
2. What do they do
3. Could they be the reason why the card shows as 'failed'
4. and where can I get replacements

Cheers


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[x56h34]

I guess someone removed the termination resistors in order to enable external devices to be used.

Put active terminators on the beginning and the end of the scsi chain, with the fastlane being in the middle of the chain. Here's an example:

TERM---drive---drive---Fastlane---TERM

[odin]

Yup, looks like three resistor packs. But er...socketed? Those are normally soldered components AFAIK.

[X-ray]

@ Odin

Do you mean that on the Fastlane those are normally soldered, or do you mean that generally those types of teminators are soldered?

[Ilwrath]

Yeah, they're the termination packs.  They're socketted on the Fastlane Z3, so they can easily be removed when needed, and then easily be lost, later.

No big deal, though.  As stated above, just make sure both ends of the SCSI chain are properly terminated, with the Fastlane in the middle.  Problem solved.  :-)  

[odin]

X-ray wrote:
@ Odin
Do you mean that on the Fastlane those are normally soldered, or do you mean that generally those types of teminators are soldered?

I ment that it's usually a soldered component on PCBs. I.e. I'v never seen them socketed, but that doesn't mean that it's not perfectly possible :-).

Oh and every selfrespectable electronic parts shop would sell that stuff.

[Gaeokerena]

just been on Maplins site here in UK.

There are millions of types of resistors!!!

I think I may be in over my head here  :-?

Any suggestions?

[Gaeokerena]

just been on Maplins site here in UK.

There are millions of types of resistors!!!

I think I may be in over my head here  :-?

Any suggestions?

[odin]

Ask someone who owns a Fastlane which still has the resistorpacks what Ohm value it should be :-).

[Ilwrath]

Ask someone who owns a Fastlane which still has the resistorpacks what Ohm value it should be

I don't know.  Mine were lost before I bought my card, too.

I just used the proper termination on the SCSI chain, and it worked fine, up until I bought my CyberStorm/SCSI.  (At which point I sold the card onward, and told the next owner how to properly configure/terminate it.)  :-)  

Just keep in mind that even though the card has two SCSI connectors, they are one logical chain that the card is in the middle of.

For example, my SCSI chain was...

terminated HD -->
non-terminated HD -->
FastLane Internal Header
FastLane External Header -->
non-terminated SCSI scanner -->
terminated CD ROM

Now, if I unplugged my SCSI scanner and CD ROM, I'd have to plug in an external 50-pin Centronics terminator, so that both ends would still be properly terminated.

[odin]

Those resistor pack headers sit between the internal and the external SCSI connectors then?