Panasonic JU-257A Service Guide - Page 23

Peripherals - Pocket Service Guide 1.44 MB FDU Y-E DATA YD-702D-6537D SA450 POWER SUPPLY CONNECTOR JUMPERS DS1 H2 DS0 IF JUMPER INSERTED JUMPER NOT INSERTED Note: This drive is available in two versions: with and without front panel JUMP. FUNCTION IF Selects the capacity Mode 2 (2.0/1.0 MB) Automatic Switching operation 2.0 MB: if a high density disk is used 1.0 MB: if a double density disk is used Mode 3 (2.0/1.6/1.0 MB) Automatic Switching with "Mode Select" operation 2.0 MB: if a high density disk is used with "Mode Select" high 1.6 MB: if a high density disk is used with "Mode Select" low 1.0 MB: if a double density disk is used; "Mode Select" is not used H2 Selects the output of the "High Density" signal The High Density signal is applied to interface connector pin 2 The High Density signal is not applied to the interface connector DS1 Drive selected as DRIVE 1 DS0 Drive selected as DRIVE 0 4 COND. OFF * ON ON OFF * ON * OFF 1.44 MB FDU PANASONIC JU-257A 746P SA450 Note: This drive is available in two versions: with or without front panel. There are no jumper settings to be made on this drive and consequently there are no jumpers present. The Density Mode and Drive Select parameters cannot be changed and are factory-set by Panasonic. 3.5" MICRO FLOPPY DISK DRIVES 4-23