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The term 'PDS-slot' covers not one but many possibilities. The SE/30 and the IIsi have a common arangement of their 120-pin female connector on their MLBs, known as an 030 PDS (slot), so what plugs into the one safely also plugs into the other. That, however, is where the cosy arrangement...

Those PBs do not all use the same design of memory-expansion card. The ringing of the changes has been covered before in these forums, eg: viewtopic.php?f=4&t=9908 In brief, 180c and 165c (only) use a cousin-card of 10MB (max.) to reach the 14MB RAM-ceiling. The cousin-card attaches at...

Although it relates principally to production of data CDs, this contains much that could be useful to you. de

Thank you for your kind offer, JDW, but it was enough that you fingered OS 8.1 as the resting-place for OT 1.3. I have the CD Z-97050-315-A, which contains OT 1.3.1. Only my PBs 520c and 540c have OS 8.1 installed, and that had slipped my capacious sieve-like memory for the moment. I shall...

Good stuff, JDW. I haven't yet tried to extend the process back a small notch from IIci/50MHz to SE/30, but I am sitting here with the root-level folder of my G4/1GHz DP displayed on a IIci. The IIci is using OS 7.6.1, Chooser 7.5.5, OT 1.1.2 and AppleShare 3.8.3. The IIci is a little slower...

There were several subtle variations in the P250/CC line: 4.5-V alkaline or 3.6-V lithium batteries and presence/absence of a CUDA switch being chief amongst them. If none of yours has a CUDA switch (although the solder-pads for one may be evident near the rear right of the MLB) it only obliges...

This is a subject that has exercised quite a few minds in this Army. A least-fuss solution can be found quickly if you have a Mac capable of running OS 7.6.1 to use as an intermediary between the older and new Macs. de

Your predicament is not uncommon amongst owners of older Macs. You probably know little about the CC's history before you became its owner, and what structural or electronic components were ready to break or fail, so all that you can do is go back to square one. Take off the case bucket. Reset...

Broadly, perhaps, but accurately enough in that VRAM increments are numerically large but potentially few in number, a good idea can be gained from the number of colours that the Mac reports that it can use for display. de

If a 5500 or 5400 MLB could either of them be shoehorned into a CC and find adequate power for their operation, the bind positively moggles at what could then be done with a Sonnet Crescendo G3/400MHz L2 Card. The display area of the CRT would make for a (very fast) through-a-keyhole...

You have taken the first step along the path used in many contemporary (with us) fan-cooling systems, namely, reducing fan noise and cooling effect by dropping the supply-voltage to the fan. The voltage-drop may be arbitrary, as in your case, or mediated by a circuit responding to a thermistor...

I should also have mentioned that not all the MLBs of CCs have a CUDA switch. In such cases the MLB is reset when you remove all power to it (by removing the battery, of whichever voltage, and taking the MLB from the computer) for at least 10min. Alternatively, if resetting just before...

The SOTMFAD procedure is that already mentioned. Switch the cleaned, refurbished, checked and reassembled CC on with the rear mains switch. Try to start up from the keyboard. If there is no response, or if you hear a rapid clicking in time with flashing from the power-light on the front...

System6+Vista Many CCs that have not been used for some time need up to 24hr—or more—just sitting quietly with mains power connected and switched-on at the rear of the Mac before there is even the ghost of a chance of startup from the keyboard. You presumably know by now whether your CC uses a...

Much of what you will find while you resuscitate your CC has been already dealt with here. Both alkaline and lithium batteries can be found in the CC/P250. The switch-on degaussing is also dealt with in the referenced threads, as is the drill for powering-up an unused (for some time) CC, and...

More to the point is that the dark bottom cheesehead Torx screws have a metal thread to mate with holes in the metal chassis, and the top 'silver' cheesehead screws have a coarse thread to mate with the corresponding holes in the bezel without ripping the thread out of the ABS plastic when they...

Fine-looking acquisition, and one of the later versions with the speaker vent on the left. A Classic II with 6MB gave good workhorse service throughout the undergraduate years of the distaff-side member of this household. Algernon Apple now sleeps in an honoured place on a shelf between his...

Both of the MDDs in this house are of the generations (1GHz DP: SG240..., and 1.25GHz: YM343...) that were intended to be able to boot into OS 9. Although neither came with the original System Install discs (they were second-hand), when I was able to get the machine-specific discs I found that...

Double-sided RAM cards should pose no problem, as that implies low-density chips as the CRT iMacs need, The specification, which you may not have if you were not aware that you needed it, is 168-pin, 3.3-V, PC-100, non-ECC, unbuffered, unregistered, low-density SDRAM, with no more than 16 chips...

Thou sayest sooth. I misappreciated Byrd's difficulty. The sideslot accepts the bent ribbon-cable by forcefit, and it is only logical to expect that it can be removed with force. But circumspect force, as has already been observed. In another life I called the process winkling the cable out. de