21 TRACK MAINTENANCE GUIDE

Transcription

1 Mountain Engineering II, Inc. 21 TRACK MAINTENANCE GUIDE 1233 Sherman Drive, Longmont, CO (fax)

2 Table of contents Table of contents...2 Revision history...3 Field Service...4 List of Field Replicable Units (FRUs)...4 Required Tools...4 Access to internal components...5 Before opening the unit...5 Opening the unit...5 Replacing components...8 Replacing a reel latch...8 Replacing a hub...8 Replacing a motor assembly...9 Replacing the controller board...11 Replacing the operator panel...15 Replacing the 5V Power Supply...17 Replacing the 12V Power Supply...19 Replacing the Back Panel Module...22 Replacing the Head assembly...26 Replacing the Roller assembly...29 Cables and wiring...30 Controller connectors...30 Display connectors...32 Signal diagram...33 Power diagram Track maintenance guide Rev 1.0 page 2

3 Revision history Revision Date Change Author 1.0 Original version 21 Track maintenance guide Rev 1.0 page 3

4 Field Service Contact Mountain Engineering II, Inc. before attempting to repair the 21 track reader. If we determine that a problem can be solved by replacing a FUR (Field Replaceable Unit) in the field we will issue a FRA number (Field Replacement Authorization) and send you the spare part. Replace the part following the instructions in this manual. Return the failing part to us. If we determine that the problem cannot be solved by replacing a part in the field we will issue a RMA number (Return Material Authorization). This is your authorization to send the unit to us for repair. Do not send units to us for repair without obtaining a RMA number. List of Field Replicable Units (FRUs) Component Part number Reel latch TBD Hub TBD Take-up motor assembly TBD Supply motor assembly TBD Controller card TBD Operator panel assembly TBD 5V power supply TBD 12V Power supply TBD Back panel TBD Head assembly TBD Roller assembly TBD Required Tools Allen wrenches: 5/64 7/64 1/8 5/32 Open end 5/16 wrench 11/32 nut driver Philips screw driver Antistatic wrist strap 21 Track maintenance guide Rev 1.0 page 4

5 Tools needed: Access to internal components 1/8 Allen wrench Antistatic wrist strap Before opening the unit 1. If a tape is loaded, unload the tape. Remove the reels from the takeup hub and from the supply hub. 2. Switch off the AC power and remove the power cord 3. Unplug the SCSI interface cable 4. Unplug the USB maintenance cable 5. Wear an antistatic wrist strap when manual contact with an electronic board is required Opening the unit 1. Make sure that unit is on an even and level table top 2. Tilt unit up by raising back of the unit remove Back of unit remove remove Unit tilted with back of unit up. 21 Track maintenance guide Rev 1.0 page 5

6 3. Using 1/8 Allen wrench remove top row of 4 rubber feet 4. Carefully lower the unit back onto the table 5. Next, tilt the unit up by raising the front of the unit Front of unit Unit tilted with front of unit up 6. Remove middle row of 4 rubber feet 7. Remove 3 of the 4 feet in the top row. Do not remove 4 th foot at this time remove DO NOT REMOVE 8. Firmly hold bottom plate in place while removing last foot Remove last foot while holding bottom plate in place bottom plate 21 Track maintenance guide Rev 1.0 page 6

7 9. Carefully lower bottom plate Lower top edge of bottom plate to table Unit opened for access to internal components All internal components are now accessible. Note: While working on the unit take care not to bump into the deck plate. 21 Track maintenance guide Rev 1.0 page 7

8 Replacing components Tools needed: None Replacing a reel latch Replace defective latch with supplied replacement latch. Tools needed: 7/64 Allen wrench Replacing a hub 1. Locate defective hub Remove three screws using a 7/64 Allen wrench remove To remove the hub, remove the three screws than lift hub 21 Track maintenance guide Rev 1.0 page 8

9 2. Remove hub Removed hub Motor shaft after hub is removed 3. Install replacement hub using the screws removed in step 1. Replacing a motor assembly Tools needed: 7/64 Allen wrench 5/32 Allen wrench 1/8 Allen wrench to open the unit Antistatic wrist strap 1. First, the hub must be removed Follow steps 1 and 2 of Replacing a hub 2. Open unit. See Access to internal components. The electronic boards inside the 21 track reader are sensitive to static shock. A grounded antistatic wrist strap should be used. 21 Track maintenance guide Rev 1.0 page 9

10 3. Unplug motor driver board power cable 4. Unplug motor driver board signal cable Power cable Signal cable Unplug the power cable and signal cable 5. The motor assembly is attached to the deck by four screws. Remove screws using a 5/32 Allen wrench. Remove screws Remove screws 6. Remove motor assembly 7. Install replacement motor assembly by following the above steps in reverse order 21 Track maintenance guide Rev 1.0 page 10

11 Replacing the controller board Tools needed: Philips screw driver 1/8 Allen wrench to open the unit Antistatic wrist strap 1. Open unit. See Access to internal components for instructions on how to open the unit 2. Locate the controller board. The electronic boards are sensitive to static shock. A grounded antistatic wrist strap should be used. Operator panel assembly Controller board Supply motor assembly Take-up motor assembly 3. Unplug both head connectors To unplug a head connector turn both retaining screws at the same time. Head connector Turn both retaining screws at the same time Head connector 21 Track maintenance guide Rev 1.0 page 11

12 4. Unplug power cable Power cable 5. Unplug cable to operator display board Operator panel interface cable 6. Unplug both motor driver signal cables Supply motor signal cable Take-up motor signal cable 21 Track maintenance guide Rev 1.0 page 12

13 7. Unplug SCSI cable SCSI cable 8. Unplug Term power cable Term power cable 9. Verify that all connectors are unplugged. Refer to Cables and Wiring Controller connectors for a drawing of the locations of the controller connectors. 21 Track maintenance guide Rev 1.0 page 13

14 10.Remove the six mounting screws that hold the controller board. Remove the screws at the bottom of the board first. Mounting screws Mounting screws Location of controller mounting screws Remove screws starting at the bottom of the board. Remove the screws close to the head connectors last 11. Remove controller board. 12.Install replacement board by following the above steps in reverse order 21 Track maintenance guide Rev 1.0 page 14

15 Replacing the operator panel Tools needed: 5/64 Allen wrench Antistatic wrist strap 1. Turn off AC power and remove AC power cable 2. Locate the operator panel. The electronic boards are sensitive to static shock. A grounded antistatic wrist strap should be used. Operator panel 3. Using a 5/64 Allen wrench remove the four mounting screws. Do not remove any additional screws. Operator panel mounting screws Operator panel mounting screws Remove ONLY the four outside screws as shown. Do not remove any of the other screws 21 Track maintenance guide Rev 1.0 page 15

16 4. Carefully remove the operator panel by tilting the panel to the right as shown and then lifting the panel up about 1. Tilt panel to right then lift up 5. Tilt panel to the left for access to the power and the signal cable 6. Unplug power cable 7. Unplug signal cable Unplug power cable Unplug signal cable Do not unplug USB cable 8. Remove Operator Panel. 9. Install replacement panel by following the above steps in reverse order 21 Track maintenance guide Rev 1.0 page 16

17 Replacing the 5V Power Supply Tools needed: Philips screw driver Open end 5/16 wrench 1/8 Allen wrench to open the unit 1. Open unit. See Access to internal components for instructions on how to open the unit 2. Locate the 5V Power Supply 5V Power Supply 3. Unplug 2 pin AC connector 4. Unplug 4 pin DC connector 2 pin AC connector 4 pin DC connector 21 Track maintenance guide Rev 1.0 page 17

18 5. Remove safety ground screw Using an open end 5/16 wrench and a Philips screw driver remove the safety ground screw and the green wire. Remove green wire Remove nut and screw 6. Remove remaining three mounting screws Remove Remove 7. Remove 5V Power Supply 8. Install replacement power supply by following the above steps in reverse order 21 Track maintenance guide Rev 1.0 page 18

19 Replacing the 12V Power Supply Tools needed: Philips screw driver 11/32 nut driver 1/8 Allen wrench to open the unit 1. Open unit. See Access to internal components for instructions on how to open the unit 2. Locate the 12V Power Supply AC Terminal block 12V DC Terminal blocks 12V Power Supply 3. Locate the AC Terminal block and the DC Terminal blocks 4. Remove four 12V AC wires from the AC Terminal block Red White Yellow Black Do not remove the green wires. 21 Track maintenance guide Rev 1.0 page 19

20 5. Remove the four 12V AC wires from the wire clamps. Open wires clamps by sliding clamp latch horizontally Slide clamp latch horizontally either to the left or to the right 6. Pull wires towards the 12V power supply. 7. Remove red and black 12V DC wires from DC Terminal blocks Remove 12V DC power wire (red) Remove 12V DC ground wire (black) DC Terminal Blocks 21 Track maintenance guide Rev 1.0 page 20

21 8. Remove the four 12V Power Supply mounting screws using a 11/32 nut driver and a Philips screw driver Remove Remove 9. Remove the 12V Power Supply 10.Install replacement power supply by following the above steps in reverse order 21 Track maintenance guide Rev 1.0 page 21

22 Replacing the Back Panel Module Tools needed: 5/64 Allen wrench Philips screw driver 1/8 Allen wrench to open the unit Antistatic wrist strap The Back Panel includes the AC module, the fan, the SCSI connectors, and the Term Power switch. AC module fan SCSI Connectors Term Power switch Fuse box 1. Open unit. See Access to internal components for instructions on how to open the unit 2. Locate the AC Terminal block and the DC Terminal blocks AC Terminal block 12V DC Terminal blocks Back Panel 21 Track maintenance guide Rev 1.0 page 22

23 3. Remove all 5 AC wires from the input side on the AC Terminal block Do not remove the wires from the output side of the AC Terminal block Red White Yellow Black Green Do not remove AC Terminal Block 4. Remove the red 12V fan wire and the black ground fan wire from the DC Terminal Blocks. Remove 12V DC fan wire (red) Remove fan ground wire (black) DC Terminal Blocks 21 Track maintenance guide Rev 1.0 page 23

24 5. Unplug the SCSI cable from the Controller board SCSI cable Controller board 6. Unplug the Term Power Cable from the Controller board Term power cable 21 Track maintenance guide Rev 1.0 page 24

25 7. Carefully lower the deck unto the bottom panel. Make sure that none of the 12 standoffs hit components on the bottom plate. Lower deck onto the bottom plate 8. Remove all 12 back panel screws Remove Remove Back panel left side Remove 6 screws from left side of panel Remove Remove Back panel right side Remove 6 screws from right side of panel 9. Remove back panel 21 Track maintenance guide Rev 1.0 page 25

26 10.Install replacement back panel by following the above steps in reverse order Replacing the Head assembly Tools needed: Philips screw driver 1/8 Allen wrench to open the unit 3mm Allen wrench for skew adjustment Antistatic wrist strap Skew block Head assembly Head 1. Open unit. See Access to internal components for instructions on how to open the unit 2. Unplug both head connectors To unplug a head connector turn both retaining screws at the same time. Head connector Turn both retaining screws at the same time Head connector 21 Track maintenance guide Rev 1.0 page 26

27 3. Feed both connectors through the rectangular opening in the deck 4. Carefully lower the deck unto the bottom panel. Make sure that none of the 12 standoffs hit components on the bottom plate. Lower deck onto the bottom plate 5. Remove skew adjustment screw using 3mm skew adjustment tool Remove skew adjustment screw 21 Track maintenance guide Rev 1.0 page 27

28 6. Remove both mounting screws using a Philips screw driver Remove both screws 7. Remove head assembly 8. Install replacement head assembly following the above steps in reverse order. 9. Adjust skew For a detailed description on how to adjust skew refer to the 21 TRACK USER GUIDE 21 Track maintenance guide Rev 1.0 page 28

29 Replacing the Roller assembly Tools needed: 7/64 Allen wrench 1. Locate defective roller. There are 6 rollers in the tape path. 2. Using a 7/64 Allen wrench remove the 4 mounting screws Remove Remove 3. Remove the roller assembly 4. Install replacement roller assembly 21 Track maintenance guide Rev 1.0 page 29

30 Cables and wiring Controller connectors Component side of controller, showing the relevant connectors (components are not shown) 21 Track maintenance guide Rev 1.0 page 30

31 Connector Name Connection J7 Head connector Male head connector J8 Head connector Female head connector J9 Power connector 5V power supply J2, J3 Motor connector Supply and take-up motor (either connector may be connected to either motor) J6 Display connector Operator display board J5 J11 SCSI SCSI flat cable to SCSI connectors on back panel J10 Term Power Term Power switch on back panel J18 Debug port USB debug port 21 Track maintenance guide Rev 1.0 page 31

32 Display connectors Component side of display, showing the relevant connectors (components are not shown) Connector Name Connection J4 USB connector Cable to external memory stick connector J5 Controller connector Controller J6 J6 Power connector 5V power supply 21 Track maintenance guide Rev 1.0 page 32

33 Signal diagram Controller To Lines J10 Term Power switch 2 J3 Supply motor J7 10 J2 Take-up motor J7 10 J6 Display J5 16 J8 Head female 26 J7 Head male Track maintenance guide Rev 1.0 page 33

34 Power diagram 21 Track maintenance guide Rev 1.0 page 34