RA-81 issues

-----Oorspronkelijk bericht----- From: Jerry Wright Sent: Friday, February 06, 2015 8:54 PM To: cc_talk ; Jerry Wright Subject: RA-81 issues I have a rack full of RA81's, all Pass Rom base self test. If I try to spin up one of the drives, It will start to spin up and then just stop. There are no front panel lights that come on or codes on the terminal screen. all 3 drives do the same. These are not connected to a controller, and the manual does not say this is need. The forth one has no drive and the motor seems to turn hard, is there a brake on the motor ??? - what I'm I missing here Thanks Jerry I would start checking the lamps in the buttons. Without checking the documentation, the button lamps show an error code which is listed in the manual. So, check the lamps ... As far as I remember, the RA81 spins up to speed even when it is not connected to the SDI controller. Yes, the drive motor has a brake. If you open the lid, you can see a handle at the right side, at the front. One position pulls a band as a brake on the pulley, the other position relaxes the band from the pulley. Which position ... read the fine manual ;-) Or there is not a band (that's in another drive), then that handle tensions or relaxes the drive belt. BTW, at the front of the HDA is a (white) lever. It locks the heads or let them free. Not sure if it has effect, but the RA81 has a drive sequence plug. If power-up sequencing is not used (when you have several RA81 you don't want to start up all of them at once...) ISTR that you need to short 2 pins. Normally, there is a plug installed that has 2 pins shorted. - Henk