TU56 DECtape Transport
| TU56 | |
 A TU56 drive | |
| Manufacturer: | Digital Equipment Corporation |
|---|---|
| Drive Controller(s): | TC08, TD8-E, TC11 |
| Media: | DECTape |
The TU56 DECtape Transport is an enhanced successor to the TU55 DECtape magnetic tape drive. The usual configuration was dual-drive (referred to as 'dual transport'), but a single-drive version, the TU56H, was available. The TU56M (dual) and TU56HM (single) model included 5 G888 Read/Write Amplifier FLIP CHIPs, for use with device controllers which do not include that functionality.
Card locations and counts
The TU56 contains a small backplane holding a number of FLIP CHIP modules. The module location chart for the TU56 backplane is (starting at the right-hand side, viewed from the board-insertion side):
| Slot | A | B | Use |
|---|---|---|---|
| 1 | G848 | Left forward | |
| 2 | G848 | Left reverse | |
| 3 | G859 | G847 | |
| 4 | M941 | M922% | |
| 5 | M531 | M113 | |
| 6 | M908 | M113 | |
| 7 | M908 | M117 | |
| 8 | M040 | M302 | |
| 9 | G851% | ||
| 10 | W032# | ||
| 11 | W032# | ||
| 12 | G851% | ||
| 13 | G888* | G888* | |
| 14 | G888* | G888* | |
| 15 | M040 | G888* | |
| 16 | M117 | M113 | |
| 17 | M922% | ||
| 18 | M941 | G847 | |
| 19 | G848 | Right forward | |
| 20 | G848 | Right reverse | |
(% = Connector)
(# = TU56H only)
(* = Optional, not used in standard controllers)
Module counts
Module counts (drawn from the module count chart, mostly confirmed in the module utilization drawing):
| Count | Type | Description |
|---|---|---|
| 1 | G742# | Positive Logic Jumper Card |
| 2& | G847 | Dual Motor Voltage Control |
| 4& | G848 | Motor Control |
| 2& | G851 | Relay |
| 1 | G859 | Clock Regulator |
| 5 | G888* | Manchester Reader/Writer (Read/Write Amplifier) |
| 2& | M040 | Solenoid Driver |
| 3& | M113 | 10x2 Input NAND Gate |
| 2& | M117 | 6x4 Input NAND Gate |
| 1 | M302 | Dual Delay MV |
| 1 | M531# | Bus Converter |
| 2 | M908 | Connector |
| 2& | M922 | Cable Connector |
| 1 | M923* | Cable Connector |
| 2& | M941% | Jumper Card |
| 2 | W032 | Cable Connector |
(& = dual drive; half this in a single drive)
(# = M531 is used with a negative logic controller; G742 with a positive logic controller)
(% = Replaced with a W5l3 when the transport is connected to a relay driver controller)
(* = Optional, not used in standard controllers)
See also
External links
- TU56 DECtape Transport Maintenance Manual (DEC-00-HRTC-D)
- TU56 DECtape Illustrated Parts Breakdown (DEC-TU56-IPB-2)
- TU56 DECtape transport engineering drawings (TU56-77-AN)
- TU56 DECtape transport engineering drawings (TU56-78-AP)
- TU56 DECtape transport engineering drawings (TU56-83-AV)
