They made at least 7 changes to the main circuit board, IC's and board B in just the first year and worked hard to rid the XD's of any unreliability. On early XD's (you didn't say which generation your's was) Minolta really scrambled to correct some suseptibilities (don't want to call these "problems"). ALL THIS IS WAY MORE THAN YOU SHOULD HAVE TO DO and I really don't recommend having your XD messed with the way Minolta says to check it.
And checking IC-2 itself means pulling main board (IC-2 is on hidden side of board along side of mirror box) by disassembling the camera. If this is a leak between SW1 and IC-2, you would have to connect to downside of R52 which is under a cover in the film canister hollow. After you're all connected then disconnect the ammeter's shorts, and NEVER work anything on an XD while you have an ammeter connected to it. Following Minolta's instructions, to check for current leakage you need a microammeter and Minolta says to short out ammeter's terminals as you connect the leads to suspected points of leakage. Then check batteries' voltage again.Īt rest an XD is supposed to have current leakage less than 1mA. Again with lens cappped, eyepiece blind done and a bit of black tape over the illuminator window in front. Simplest way to test for battery drain is to check voltage of each new battery before putting them in camera, then put them in in camera and without working anything on your XD let it rest for a few days. (I'm not being facetious here: Minolta made a lot of corrections to wiring during early XD development and some involved this prevention circuit, possibly to correct symptoms like your XD might have.)Īnd on an XD the photocell is located right above the eyepiece and so if you do try this drain test, also close the eyepiece blind as well as cap the lens. If no drain shows up, then just remember to not leave your XD wound up. Would suggest just leaving XD off and not cocked for a few days and see if any drain shows up. It really doesn't sound like your XD has a major drain, just a trickle drain.
But problems with Switch #7 not closing show up in other ways during exposures (and your's seemed to work OK) so don't think your XD is draining this way. Also Switch #7 if it doesn't stay closed (whether the camera is wound or not), this open switch can cause major drain. IF all the electronics, IC's, circuit boards, and soldering points are good, then major battery drain may be caused by simple grounding like pinching the yellow wires from Switch #1 as they squeeze by the battery box, and other points like soldering scuz bridging wiring connections at the IC's.
On yours, a major drain doesn't seem to be the problem: your XD still had enough juice to light LED (even off register) and power everything to trip shutter. On XD's major battery drain takes about 3-4 days to make battery dead. But since some bit of current works through part of one of the integrated circuits, it may cause a trickle drain like what you had. Switch #1 is that hairpin looking switch inside the bottom plate, and XD's are supposed to activate this prevention circuit so don't think this switch is a problem. This is all before any other circuitry is turned on by user's pressing the release button. On an XD, once the camera is wound and the advance lever is returned back, Switch #1 closes and energizes what Minolta calls "magnetic release lock circuit" in IC-2. Rating of a battery is an indication of the battery capacity or how long it will last on a charge, the higher the better.Ĭall toll-free 1-88 or e-mail if you don't see your Minolta digital camera model listed.Even at rest an XD has some current flowing through some part of its circuitry. The above batteries will have different model numbers on the product pages since they are after market replacement batteries which are as good or better than the originals.
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