Panasonic_5.25 Jumpers Panasonic 5.25
Panasonic_5.25-jumpers Panasonic_5.25-jumpers
User Manual: Panasonic_5.25-jumpers
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Peripherals - Pocket Service Guide 360 KB FDU PANASONIC JU-455-5 C09 SA450 3 JUMPER DESCRIPTION SETTING DS1 Drive selected as DRIVE 1 OFF DS2 Drive selected as DRIVE 2 ON DS3 Drive selected as DRIVE 3 OFF DS4 Drive selected as DRIVE 4 OFF MX Drive selected by the Drive Select signal OFF DS Drive selection enabled in a multidrive system ON RD Ready signal enabled ON DC Stores door closure OFF WP Write Protect signal enabled ON MM Drive motor enabled by the Motor On signal ON MS Drive motor enabled by the Drive Select signal OFF UA Front LED handled by the In Use signal OFF DA Front LED handled by the Drive Select signal ON RY PC XT-AT compatibility OFF TM Terminator ON 5.25" FLOPPY DISK DRIVES 3-5 Peripherals - Pocket Service Guide 360 KB FDU PANASONIC JU-455-7 C09 SA450 DA UA JUMPER 3-6 DESCRIPTION SETTING DS1 Drive selected as DRIVE 1 OFF DS2 Drive selected as DRIVE 2 ON DS3 Drive selected as DRIVE 3 OFF DS4 Drive selected as DRIVE 4 OFF MX Drive selected permanently OFF MM Drive motor enabled by the Motor On signal ON MS Drive motor enabled by the Drive Select signal OFF UA Front LED handled by the In Use signal OFF DA Front LED handled by the Drive Select signal ON RY PC XT-AT compatibility OFF TM Terminator ON 5.25" FLOPPY DISK DRIVES Peripherals - Pocket Service Guide 1.2 MB FDU PANASONIC JU-475-2 C08 JUMPER DESCRIPTION SA450 SETTING TM Terminator ON DS1 Drive selected as DRIVE 1 OFF DS2 Drive selected as DRIVE 2 ON DS3 Drive selected as DRIVE 3 OFF DS4 Drive selected as DRIVE 4 OFF DS Selection of a drive in a multidrive system enabled ON MX Drive selected permanently OFF AT Drive for use in the system enabled ON AX Stores the Drive Select signal OFF RDY Standard Ready signal OFF LR Stores the Ready signal OFF DC Stores door closure ON DS Door open OFF BX Double speed OFF CX Single speed ON IRD Internal Ready signal OFF SP Step Disk Change ON DX Index Disk Change OFF DO Disk Change drive selection OFF UA Front LED controlled by the Ready signal OFF DA Front LED controlled by the Drive Select signal ON OA Front LED controlled by the Ready or Drive Select signal OFF HA Front LED controlled by the Ready and Drive Select signals OFF MM Motor drive enabled by the Motor On signal ON MB Motor drive enabled by the Drive Select signal OFF 3-12 5.25" FLOPPY DISK DRIVES Peripherals - Pocket Service Guide 1.2 MB FDU PANASONIC JU-475-3 C08 PANASONIC JU-475-3 C20 SA450 3 5.25" FLOPPY DISK DRIVES 3-13 Peripherals - Pocket Service Guide JUMPER DESCRIPTION SETTING FOR JU-475-3 C08 SETTING FOR JU-475-3 C20 TM Terminator ON ON DS1 Drive selected as DRIVE 1 OFF OFF DS2 Drive selected as DRIVE 2 ON ON DS3 Drive selected as DRIVE 3 OFF OFF DS4 Drive selected as DRIVE 4 OFF OFF MX Drive selected permanently OFF OFF DA Front LED controlled by the Drive Select signal ON ON UA Front LED controlled by the Ready signal OFF OFF HA Front LED controlled by the Ready and Drive Select signals OFF OFF LA Front LED controlled by the Ready signal selecting the drive OFF OFF MS Motor drive enabled by the Drive Select signal OFF OFF MM Motor drive enabled by the Motor On signal ON ON HS Head loading controlled by the Drive Select signal (not used) OFF OFF HL Head loading controlled by the Drive Select and Ready signals (not used) OFF OFF HM Head loading controlled by the Motor On signal (not used) OFF OFF OP Dual Mode ON ON 1M Single Mode (only 1 MB) OFF OFF BX Double speed OFF ON Used with OP, BX and 1M OFF OFF EX Active index after head positioning on any track OFF OFF TH Interface connector pin 34 selected by the Drive Select signal OFF OFF DD Not used OFF OFF Pin 34 is kept low by Drive Select when the support is not inserted and by the first Drive Select when the support has been changed ON ON OFF OFF NAX MDB MDA 3-14 5.25" FLOPPY DISK DRIVES Peripherals - Pocket Service Guide 1.2 MB FDU PANASONIC JU-475-4 C08 PANASONIC JU-475-4 C20 SA450 3 5.25" FLOPPY DISK DRIVES 3-15 Peripherals - Pocket Service Guide JUMPER DESCRIPTION SETTING FOR JU-475-4 C08 SETTING FOR JU-475-4 C20 TM Terminator ON ON DS1 Drive selected as DRIVE 1 OFF OFF DS2 Drive selected as DRIVE 2 ON ON DS3 Drive selected as DRIVE 3 OFF OFF DS4 Drive selected as DRIVE 4 OFF OFF MX Drive selected permanently (used on single drive systems only) OFF OFF UA Front LED controlled by the Ready signal OFF OFF DA Front LED controlled by the Drive Select signal ON ON LA Front LED controlled by the stored Ready function OFF OFF HA Front LED controlled by the Ready and Drive Select signals OFF OFF MS Motor drive enabled by the Motor On signal OFF OFF HL Head loading controlled by the Drive Select and Ready signals (not used) OFF OFF HS Head loading controlled by the Drive Select signal (not used) OFF OFF HM Head loading controlled by the Motor On signal ON ON HL1 Head loading controlled the stored Ready function (not used) OFF OFF PH Dual mode (positive high density) ON ON NH Dual mode (negative high density) (not used) OFF OFF AX Mode Select with the storage of Drive Select OFF OFF 1M Single Mode (only 1 MB) OFF OFF BX Double speed OFF ON Standard Ready signal OFF OFF RDY DC Disk Change 1 (reset via Step) ON ON Disk In OFF OFF DO Disk Out OFF OFF DD Disk Change 2 (reset via Drive Select) OFF OFF TH Pin 34 of the interface connector selected by Drive Select OFF OFF GX Read Data is enabled by Write Gate, Write Protect, Drive Select and when the head is positioned on a track ON ON EX Active index following the positioning of the head on a track OFF OFF 1E Selects 96 TPI or 48 TPI (set at the factory) ON ON RY Connects the Drive Status signal to interface connector pin 34 (set at the factory) ON ON ST Not used OFF OFF OF Not used OFF OFF NDO 3-16 5.25" FLOPPY DISK DRIVES Peripherals - Pocket Service Guide 1.2 MB FDU PANASONIC JU-475-5 C08 (to lev. 02) PANASONIC JU-475-5 C20 SA450 3 5.25" FLOPPY DISK DRIVES 3-17 Peripherals - Pocket Service Guide JUMPER DESCRIPTION SETTING FOR JU-475-5 C08 SETTING FOR JU-475-5 C20 TM Terminator OFF OFF DS1 Drive selected as DRIVE 1 OFF OFF DS2 Drive selected as DRIVE 2 ON ON DS3 Drive selected as DRIVE 3 OFF OFF DS4 Drive selected as DRIVE 4 OFF OFF DA Front LED controlled with the Drive Select signal ON ON HA Front LED controlled with the Ready and Drive Select signals OFF OFF MS Motor drive enabled with the Motor On signal OFF OFF HL Head loading controlled by Drive Select and Ready (not used) OFF OFF HS Head loading controlled by Drive Select (not used) OFF OFF OP Dual Mode (high density positive) ON ON AT Enables drive for use in system ON ON AX Mode Select with storage of Drive Select OFF OFF 1M Single Mode (only 1 MB) OFF OFF BX Double speed OFF ON Standard Ready signal OFF OFF RDY 3-18 DC Disk change 1 (reset via step) ON ON DD Disk change 2 (reset via Drive Select) OFF OFF TH Pin 34 of interface connector selected by Drive Select OFF OFF GX Read Data enabled by Write Gate, Write Protect, Drive Select and when the head has set on a track ON ON EX Index active after the head has set on a track OFF OFF 1E Select 96 TPI or 48 TPI (set in the factory) ON ON RY Connects Drive Status to pin 34 of the interface connector ON ON ST Not used OFF OFF OF Not used OFF OFF 5.25" FLOPPY DISK DRIVES Peripherals - Pocket Service Guide 1.2 MB FDU PANASONIC JU-475-5 C08 (from lev. 03) PANASONIC JU-475-5 A72 PANASONIC JU-475-5 A08W SA450 3 Note: Jumpers EX, GX, DD and TH have been removed from drive JU-475-5 C08 starting from this drive’s level 03 (March, ’94). To set the disk change mode 2 on this drive (as used on L1 with GO280D, FP1 fw2.4, FP4 fw3.7), solder a 15 Khom resistor at R18. The JU-475-5 C20 drive will no longer be available from March, 1994; instead, you can use drive JU-475-5 C08 by inserting jumper BX. JUMPER DESCRIPTION SETTING TM Termination OFF DS1 Drive selected as DRIVE 1 OFF DS2 Drive selected as DRIVE 2 ON DS3 Drive selected as DRIVE 3 OFF DS4 Drive selected as DRIVE 4 OFF DA Front LED handled by the Drive Select signal ON HA Front LED handled by the Ready and Drive Select signals OFF MS Drive motor enabled by the Motor On signal OFF OP Dual mode (positive high density) ON AT Enables the drive for use in the system ON AX Mode Select with Drive Select storage OFF 1M Single Mode (only 1 MB) OFF BX RDY DC Dual speed OFF Standard Ready signal OFF Disk Change 1 (reset via Setup) ON ■ 5.25" FLOPPY DISK DRIVES 3-19
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