LA210 problem with the control lines

Hi all. Yesterday I connected my LA210 Letterprinter to the printerport of a VT102. Both are set at 9600 Bd, 8 databits, no parity and 1 stopbit. However when I send some 5 characters from the VT102 to the printer, it prints many mirrored question marks and other 'strange' characters. Okay, I thought, the baudrate setting, etc. is not correct. But it is. These are the checks I have done so far. 1) The used cable is an original DEC BC22D-25. This cable is mentioned in the LA210 Letterprinter User Guide. 2) From the VT102 User Guide, I build the EIA loopback connector. It is a 25 pin D connector and has pin #2 wired to #3 and #15, pin #4 wired to #5 and #8, pin #20 wired to #6 and #22, and pin #19 is wired to #12 and #17. The VT102 passes the Printer Loopback Self-Test, ESC [ 2 ; 16 y 3) The LA210 passes the Internal Self-Test. Among others, it prints that the speed is 9600 Bd, so I know those DIP switches are set ok. It also print lines with all characters in it. 4) The LA210 I/O Loopback Tests only mentions to plug in a loopback connector. I assume I can use the same one as the one used on the VT102. The Loopback Test gives an error. The output text is: Control lines failed. (20 mA ?, jumpers ?) Data path OK Printing loopback <many lines with all characters in it> I do not understand the message "Control lines failed". I am using EIA, so it can not be a current loop problem. When I connect the BC22D to the VT102 and the LA210, the "Data Set Ready" LED on the LA210 goes on. Am I using the correct loopback connector on the LA210? Has anybody seen this problem before? I have no field maintenance print set of the LA210 .... kind regards, Henk Gooijen, PDP-11 collector http://home.12move.nl/~sh416008