Service Manual wanted for DEC VT-125 terminal

Dan Veeneman wrote: I don't think I have the service manual, but here are the six types of errors indicated by the self-test error messages, from the User Guide. VT125 Offline VT100 text terminal is LOCAL. LOCAL was saved in SET-UP, or user permanent memory problem. Terminal can only process received graphics commands. VT125 BM Error Video bit map memory has one or more bad pixels. VT125 VG Error Vector generator could not draw sample shape. Graphics probably does not work, but terminal may communicate normally. VT125 IC Error Internal communications failed. VT125 cannot communicate with VT100. Terminal can only process received graphics. VT125 SC Error Auxiliary port failed data loopback test. Terminal cannot send data to printer. VT125 EC Error Computer port failed data loopback test. Terminal can only operate as text terminal in LOCAL. As this is a comms failure, I would check out the 24-pin and 16-pin cables that run from the graphics processor to the other boards. I think there are tight twists in both cables that may have cracked over time. - Paul