update: I've just read these intriguing first sentence in the recently published (and paywalled) Aviation Weekly article No Second Chances On Webb Telescope Deployment:
NASA has no plans to service the $8.7 billion James Webb Space Telescope (JWST), but it has not completely closed the door on the idea as it prepares a rigorous series of tests designed to ensure in-space repairs will not be needed. When the 6.5-m (21-ft.) telescope launches to the Sun-Earth Lagrange point (L2) in 2018, its launch interface ring will carry optical targets that could be sought out by a servicing robot’s machine vision as it approaches to attach itself in order to make ...* (my emphasis)
The Hubble Space Telescope (HST) was robotically deployed from the Space Shuttle under direct local control by the astronauts on the shuttle. There were five further service missions using the shuttle using a combination of work by astronauts in suits and astronaut-controlled robotic maneuvers. The HST was designed (at least in part) for servicing - in some cases modules could be pulled out of racks and updated or replaced, for example.
It's possible the James Webb Space Telescope (JWST) might have some features like that, but probably not to the same extent as the HST, since 1) it will be much farther away and there is not currently any manned or robotic mission activity to earth-moon (or any) libration points, and 2) the design is optimized for things like weight, reliability, performance and thermal management, rather than easy access. Since it is designd for infrared wavelengths, a substantial fraction of the systems must be maintained at low temperature.
There are several answer given to the question The JWST - What happens if/when it breaks?. Interestingly all of the answers only address service by astronauts. Now the NASA Satellite Servicing Capabilities Office, has announced and described the Restore-L mission - a first test and demonstration of completely robotic service and/or repair.
The answers and comments associated with question What satellites did the Shuttle retrieve from orbit? contain references to on-orbit repairs to satellites (presumably) in LEO carried out by astronauts using the shuttle's robotic arm Canadarm 1. But I'm not sure if those satellites were serviceable by design or luck, and this comment speaks to that.
Thus my question: Besides HST, JWST and stations, are there any examples of satellites designed for service in space?
Let's exclude all past/present/future space stations and anything else that has been designed specifically for astronaut activity.
I've tried to use the infinitive form for the question, so the answer can include past, present, and future satellites, but let's keep it near-future and well-planned, and exclude the hypotheticals.
The Educational Outreach page of the NASA Satellite Servicing Capabilities Office shows a YouTube video which contains an animation of robotic satellite repair. For more discussion see Is Landsat-7's propellant resupply port “robot-ready”? (Restore-L mission) and associated answers. Here is a GIF reconstructed from frames of the video: