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Repair and service information for the Contax camera. The Contax service manual gives a comprehensive list of possible causes of various symptoms and I suggest you refer to that if the cause of your problem. Contax Quartz 35mm SLR camera, Contax Q, Q. TTL metering system using a silicon photo diode, manual or aperture-priority exposure controls .

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Underneath is a PCB with several gold plated tracks. The ISO dial it’self has to be fitted after the top cover. It was manufactured by Msnual in Japan under licence to Zeiss.

Contax 139Q

Although there is some evidence that the original switch could fail, it wasn’t a common problem and the changes made might have been done as much for a manufacturing reason as for reliability. As long as you use the very thin tape not the thicker foam type the focus should be correct. With the ISO plate lifted, the switch, which is on the underside of the plate, can be dismantled. manua

Manuak NOT adjust the other screw as this changes the angle of the mirror. This page was last modified on 17 Decemberat To clean these off requires removing the prism. There were a mahual modifications made to the camera during the period it was manufactured. See where the rivet has finished up. When refitting the top cover, it doesn’t always fit in its proper position behind the two levers but instead gets caught up on top of them.


Another change that took place was to the transfer switch. The rubber insert on top of the lever is stuck on.

User Guide for Contax Camera, Free Instruction Manual

Transfer Switch The transfer switch is located under the cojtax plate. This is what it looks like with the mirror box in place. Underneath is a collet with a slotted top.

The bottom cover and the lens mount trim need to be removed to access it. Sure, I could have tried to re-sell it, with full conrax, but I didn’t really want to put a pile of crap back into circulation, and leave another collector disappointed. The cover needs to fit under the edge of the holder and the original covers were thinner so they could fit. Note the position of the rivet in the top blade of the curtain and compare it to the next image.

The ones that got away. The ISO dial itself rarely needs dismantling and is easily reassembled if you do.

The Contax cameras benefit from the first use of a quartz-timed, electronically-controlled, vertical metal shutters; the point being that shutter speeds were theoretically extremely accurate. Apply a piece of double sided sticky tape to the button, overlapping it onto the surrounding dial. When looking through the viewfinder, any specs of dust that are visible and are sharpley focussed are on the top of the screen or the underside of the prism. But the various plates that fit under the ISO dial are less intuitive to reassemble and, unless you take careful notes when removing them, you will likely not get them back in the correct position.


DIY Repairs This page is intended to give some guidance to anyone wishing to attempt their own repairs.

DIY Repairs – Contax Resource

It has a centre-weighted TTL metering system using a silicon photo diode, manual or aperture-priority exposure controls, a DOF preview lever, an AE lock feature to retain metered shutter speeds and thus allow shots to be re-framed without changing the exposure values, an exposure compensation control, TTL synchronised flash with dedicated units a second SPD cell measures the light reaching the film planeand the option to attach a power winder and data back. The connections for the magnet are under this plate and some checks can be carried out.

Also the spring contacts which are attached to the underside of the click plate. The release magnet is a combination magnet that holds the mechanism in its cocked position using a permanent magnet. Note the spring hooked around the larger, black, screw.

cntax Check the fitting of the cover first to see if it will tuck under the holder easily. Also remove any batteries to eliminate power to the flexi.