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Minolta XD-11 Repair Guide Figure IB OVERRANGE LED SHUTTER-SPEED SCALE UNDERRANGE LED DIAPHRAGM WINDOW Figure 3 Figure 4 SPEED LENS KNOB LATCH DIAPHRAGM COUPLING X-SYNC FLASHCORD TERMINAL DEPTH-OF-FIELD PREVIEW Figure 1A CAMERA CAPSULE top of camera, metering switch and that you're going to get an overexposure Type: 35mm electronically controlled release switch are at back of front-plate unless you select a smaller diaphragm SLR with choice between aperture- assembly (controlled by release button), opening. If the underrange LED at the preferred or shutter-speed preferred power switch is part of mirror-release bottom of the display turns on, you're go­ operation. Electromagnetic release. Full combination magnet. Two combination ing to get a shutter speed of 1 second or range of manually calibrated shutter magnets, one to release mirror and one to slower. speeds as well as automatic exposure control diaphragm closure. Electro­ When you're using the "A" mode, you control. magnet for shutter-speed control, trigger can leave the speed knob at any of the Meter: LED readout displays shutter switch, and X-sync contacts are shutter calibrated shutter speeds — 1 second speed or f/stop which the camera will parts. through 1/1000 second. The automatic automatically program. Silicon photo­ speed-control circuit disregards the diode, full-aperture metering. Film-speed MINOLTA'S TRENDSETTER speed-knob setting. As you select the range — ASA 12 to ASA 3200. The meteoric rise of the electronic, f/stop, a tab on the diaphragm-setting Battery: Two 1.5V silver-oxide batteries super-compact SLRs forced many ring rotates the camera's diaphragm- S-76, G-13, MS-76, or RS-76. Negative camera manufacturers into a game of metering ring. Fig. 1. The diaphragm- ground. Battery compartment at bottom catch-up. But Minolta chose to set its metering ring moves a brush along a of camera. Behavior without batteries — own standards with the XD-11. Among resistance band, thereby programming shutter will not release except at other innovations, the XD-11 settled the the f/stop information. mechanical speeds. debate over aperture-preferred vs. So far, the XD-11 sounds like most of Shutter: Seiko MFC vertically traveling shutter-speed-preferred automation — it the other electronic SLRs. But the XD-11 metal focal-plane shutter. Electronic gives you a choice between either mode. demonstrates its originality when you shutter-speed control at auto and manual To program the camera for automatic select automatic diaphragm control. Set­ settings with two mechanically controlled shutter-speed control, set the mode selec­ ting the mode selector to "S " (shutter- settings — bulb and 1/100 second. Travel tor to the "A " (aperture-preferred) position, speed preferred) shifts the diaphragm time — 6.0 to 6.9ms measured across a Fig. 2. A mechanically controlled shutter- scale into the finder, Fig. 4. Now the LED 20mm distance. Mechanical self-timer. speed scale now moves into the finder. Fig. display indicates the diaphragm opening Lens: Accepts all Minolta MD lenses. 3. When you push the release button part which the camera will automatically pro­ Flange-focal distance 43.7mm (+0.02 — way, a row of LEDs indicates the shutter gram. Also notice in Fig. 4 that the 0) measured from lens-mounting ring to speed which the camera will automatically shutter-speed setting appears in the pressure-plate rails. select. The appropriate LED lights alongside finder. A t the " A " mode. Fig. 3, a Typical current draw with 3V supplied the shutter-speed calibration. mechanically controlled mask covers the to battery compartment: Meter — 8.5ma, Triangle symbols in the LED display shutter-speed display; the speed-knob Shutter open — 17ma. show the range limitations. If the com­ setting has no meaning in the aperture- Circuit: Components are mounted on a bination of light level and diaphragm preferred mode. flexible circuit board. You can replace in­ opening requires a shutter speed faster For automatic diaphragm control, turn dividual components or the complete than 1/1000 second, the overrange LED the diaphragm-setting ring to the smallest assembly. Three ICs. Memory switch is at turns on. The overrange LED indicates f/stop. A tab on the diaphragm-setting ring then comes against the minimum- The camera lets you know when you're diaphragm-closing lever always moves its aperture lever, Fig. 1. As the tab pushes going to get a shutter speed that's dif­ full distance. And the diaphragm stops the minimum-aperture lever from left to ferent from the one you've selected — it down to the f/stop you've selected on the right, it programs the metering system for turns on one of the range-limits LEDS as diaphragm-setting ring. the smallest f/stop of the particular lens. you start depressing the release button. If The third setting of the mode selector Only the MD series of lenses has the the overrange LED turns on, you’ll get an — the "M " setting, Fig. 2 — provides minimum-aperture tab on the diaphragm- exposure time that's faster than the speed- manually calibrated shutter speeds. With setting ring. Although the earlier MC knob setting. If the underrange LED turns the mode selector at "M ," the shutter lenses will couple to the diaphragm- on, you'll get an exposure time that's always delivers the selected shutter metering ring, they don't have the tab slower than the speed-knob setting. speed. The LED display now serves as a which positions the minimum-aperture To program the diaphragm opening, cross-coupled meter; it tells you what lever. So, if you install an MC lens on the the XD-11 controls the movement of the shutter speed will provide proper ex­ XD-11, the LED display won't indicate an diaphragm-closing lever, Fig. 5. The posure according to the light conditions automatically programmed f/stop. You'll diaphragm-closing lever moves from right and to the diaphragm setting. Also, as only be able to turn on one LED — the to left before the mirror swings to the tak­ you turn the mode selector from the "A " overrange LED. ing position. If the diaphragm-closing position to the "M" position, the You'll also get no diaphragm readout if lever moves its full distance, it allows the viewfinder mask uncovers the shutter- you forget to set the smallest f/stop on diaphragm to stop down to the smallest speed calibration in the finder, Fig. 4. the MD lens. The calibration for the f/stop. However, by limiting the move­ Although the speeds are manually smallest f/stop has a green color code. ment of the diaphragm-closing lever, the selected at the "M " mode, they're still Since an optical system reflects the XD-11 selects other aperture sizes. electronically controlled. Consequently, selected calibration into the finder, you A combination magnet (permanent all three functions depend on battery can quickly set the diaphragm for the "S " magnet plus electromagnet) limits the power. In fact, even the shutter release mode. Simply rotate the diaphragm- movement of the diaphragm-closing requires battery power. A second com­ setting ring until the green number ap­ lever. As the diaphragm-closing lever bination magnet in the XD-11 releases the pears in the finder, Fig. 4. starts to move, the permanent magnet mirror when you push the release button Now turn the speed knob to select the holds its armature. Then, when the far enough to close the release switch. shutter speed you want. As long as the diaphragm reaches the proper opening The XD-11 uses two S-76 silver-oxide LED display indicates an f/stop in the size, the circuit discharges a capacitor batteries housed at the bottom of the usable diaphragm range, the camera through the coil that's wound around the camera. What if the batteries die? You'll delivers the shutter speed you've permanent-magnet core. The spurt of then find that the shutter won't release. selected. It then limits how far the current momentarily disables the perma­ But the XD-11 does provide two diaphragm can close according to your nent magnet. mechanical settings — "B " and "0 ," Fig. selected shutter speed and to the light Now the armature of the combination 2. A t the "B " setting, the shutter delivers conditions. magnet jumps away from the core. And a mechanically controlled bulb action. A Since the XD-11 already has shutter- the pawl-shaped end of the armature mechanical system then releases the mir­ speed control circuitry, it can go an extra engages the ratchet teeth of a gear which ror. A t the " 0 " setting, the shutter step to make sure you don't get an incor­ rotates as the diaphragm-closing lever mechanically delivers the fastest full- rect exposure. Perhaps the camera can't moves. Stopping the rotation of the gear aperture shutter speed — 1/100 second. program the right f/stop for the particular also stops the movement of the So, if the batteries die, you can turn the combination of light level and shutter diaphragm-closing lever. speed knob to " 0 " and continue using speed. A glance at the LED readout tells In turn, the diaphragm-closing lever the camera with electronic flash. you to select a different shutter speed. stops the spring-loaded diaphragm from The electronically controlled "X " set­ But, if you fail to make the necessary cor­ closing any further. At the other settings ting also provides the flash speed of rection, the camera's "computer" takes of the mode selector, the capacitor never 1/100 second. However, the "X " setting over — it automatically changes the shut­ discharges through the coil of the com­ does depend on battery power — both ter speed for you.

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