On May 8, 8:32 pm, leec wrote:
> I have a 7978 that passes power-on self-test, but fails to keep
> tension on the tape when LOAD is pressed. I ran a Selftest 60 from the
> front panel and got a (hex) 60, 53 error indication. The Service
> Manual says "Servo Controller shutdown", which makes sense given the
> tension symptom.
>
> This seems to be an aging problem with 7978s (and others?). Questions
> for the list are: 1) have you seen this problem, and if so 2) did you
> find a successful solution? This is a home machine, I haven't worked
> on MPE professionally in 9 years. So I'm not inclined to call in one
> of the hardware support vendors.
>
> TIA,
>
> Lee Courtney

Lee, Try and run test 45.. Buffer Arm Test and also test 46 Speed
encoder test. You must move both of them and watch the display for
change.

Dave Hoffman