sentences:  The tape transport of both machines was derived from the Otari MTR90 Mk II, modified to handle 1" tape.Some mechanical parts were interchangeable between the X-850 and MTR90, the PC cards in the transport control section were manufactured by Otari and with two exceptions (the capstan servo and master CPU cards) were interchangeable between the Mitsubishi and Otari machines.The section of the X-850 service manual concerning transport adjustments was a verbatim reprint of the corresponding section of the MTR90 service manual.