AMT Datasouth SIGMA DATA 7200 Guía
111027 - 1-
Technical Bulletin 111027 Rev.*
SIGMA DATA 7200 WRITE MAGNETIC HEAD REPLACEMENT
INSTRUCTIONS
Tools Required:
No.2 Phillips screwdriver (long length)
Wrist strap (or similar device) for ESD grounding
To Prepare the Printer for Maintenance:
1. Verify that all replacement parts and tools are present.
2. Turn off the power switch, unplug the AC power cord, and disconnect all communication and
interface cables.
3. (1) Unlock and open the Lower Right Side
Cover then (2) open the Upper Right Side
Cover completely, until it rest on the
Service Cover (Fig.1).
4. Remove the Service Cover by removing
the two M3 Phillips screws holding the
Service Cover to the upper frame of the
printer (Fig. 2). Fig. 1 Fig. 2
5. Loosen or remove two M3 Phillips screws, located on the topside
of the Back Panel, and remove the Back Panel from the printer.
Fig. 3
To Replace the Write Magnetic Head Assembly:
IMPORTANT: Properly ground yourself using an ESD wrist strap (or similar device) to prevent static
discharge damage to the electronics.
6. Remove the four M3 Phillips tapping
screws [4.1] from the Flash Card
Assembly. Remove three M3 Phillips
tapping screws [4.2] located in the corners
of the Flash Card Shield then disconnect
the Flash Card Assembly from the Main
PCB Assembly.
Fig. 4
4.1
4.1
4.1
4.1
4.2 4.2
4.2
Flash Card
Assembly
Flash Card Shield
- 2- 111027
7. Disconnect all connectors from the Main
PCB Assembly. Remove the long M3
Phillips tapping screw [5.3] and the BCR
Guide [5.4], located below the Main PCB
Assembly [5.5] on the inside base of the
printer chassis. Then remove three
remaining M3 Phillips tapping screws [5.6]
and the Main PCB Assembly from the
printer.
Fig. 5
8. Tilt the printer until the Service side is face down and the bottom side is in view for disassembly.
9. Remove six M3 Phillips tapping screws
[6.7] and the two M3 Phillips screws [6.8].
Remove the Base Plate from the bottom
side of the printer chassis.
Fig. 6
10. Remove seven M3 Phillips tapping screws
[7.9]. Carefully shift the Read/Write
Interface PCB Assembly to the right then
gently pull the left end of the PCB
Assembly out from the base of the printer.
IMPORTANT: Notice how the arm of the
sensor component, located on the backside
and to the right end of the PCB Assembly,
extends over the Read Magnetic Assembly
Cable when the PCB Assembly is pulled
out.
Fig. 7
11. Disconnect all the cables from the connectors on the Read/Write
Interface PCB Assembly then remove the Print-Board Sheet (clear
plastic Mylar) [8.10] and PCB Assembly from the printer.
IMPORTANT: Notice the routing of each cable and the orientation
of the Printed-Board Sheet prior to disassembly from the Read/Write
Interface PCB Assembly.
Fig. 8
5.3
5.4 5.5 5.6
5.6
6.7 6.76.7
6.7
6.7
6.8
Base
Plate
7.9 7.9 7.9
7.9
7.9
Read/Write
Interface PCB
Assembly
8.10
Read/Write
Interface PCB
Assembly
111027 - 3-
12. Insert the No.2 Phillips screwdriver in the
right two of the four Clearance Holes
located above the Magnetic Head
Assemblies and remove two M3 Phillips
screws [10.11] from the Write Magnetic
Head Assembly [10.12]. Carefully lift and
slide the Write Magnetic Head Assembly
out from the base of the printer. Take care
to not remove the Grounding plate [10.13].
Fig. 9 Fig. 10
IMPORTANT: Note the location of the Write Magnetic Head Assembly [11.12] then examine the four
rotated “T” shaped symbols on the Head Assembly. Match the symbols with the new Write Magnetic
Head Assembly prior to installing the new Head.
Fig. 11
13. Install the new Write Magnetic Head Assembly. Place the Write Magnetic Head Assembly on the
right side of the Magnetic Head Bracket. Secure the Write Head Assembly with the two M3 Phillips
screws from step 12. Make sure that the Grounding Plate [10.13] is installed between the Magnetic
Head Assemblies.
14. Connect all the connectors to the Read/Write Interface PCB Assembly starting with the white ten-pin
flat ribbon cable and ending with the Magnetic Head Assembly Cables. Insert the Print-Board Sheet
from step 11 between the Read/Write Interface PCB Assembly and the bottom printer chassis then
secure the Read/Write Interface PCB Assembly to the bottom of the printer with the seven M3
Phillips tapping screws from step 10. IMPORTANT: Keep the arm of sensor component extended
over the Read Magnetic Head Cable prior to securing the PCB Assembly. Failure to do so will result
in the printer displaying a Zone B Paper Jam.
15. Assemble the Base Plate to the bottom of the printer chassis with the six M3 Phillips tapping screws
and the two M3 Phillips screws from step 9.
16. Rotate the printer until the Service side is facing up then Slide the left end of the new Main PCB
Assembly between the Flash Card Shield and the two molded plastic standoffs. Align the connector
holes on the new Main PCB Assembly with the four Connector Guide Pins then carefully push in the
new PCB Assembly until it is completely seated on both connectors and all of the plastic standoffs.
17. Assemble the BCR Guide to the previous location on the printer with the long M3 Phillips tapping
screw from step 8 then assemble all parts previously removed in reverse order.
18. Close the Upper Right Side Cover then close and lock the Lower Right Side Cover.
10.11
10.12
Write
(4)
Clearance
Holes
“T” shaped symbol for the
Write Magnetic Head
Assembly
11.12
10.13
- 4- 111027
19. Reconnect all communication and interface cables, plug- in the AC power cord and turn on the
power switch.
20. Verify proper functionality by printing a test coupon (refer to the Operations and/or Maintenance
Manuals if you need additional information).
Installation Verification
1. Power on the printer.
2. Follow Printer verification on the other installations.
3. Do a Magnetic print to verify the Magnetic head installations.
Test Print1. Enter into Test mode. See Maintenance Manual on how to
access the Test Mode. Magstripe2. Press the Up or Down arrow button until Magstripe test is
displayed. Then press the Enter button. Write
Stock3. Use the UP-Down arrow button to select the path where the
printed sample will be pulled from then press the ENTER
button. F
4. The printer will print a blank coupon. But information will be
encoded on the magnetic stripe.
5. Press the Up or Down arrow button until Magstripe Dump test is
displayed. Then press the Enter button. Magstripe Dump
Magstripe Dump6. Select ASCII printing. Press the Enter button. ASCII
Stock7. Select stock/location where the ASCII data will be printed on
using the Up-Down buttons. Then press the Enter button. F
8. Following the directions. Insert the encoded coupon into the
inserter slot. Insert Coupon
For Reading
9. The printer will read the coupon, then print a coupon with the
encoded data in ASCII format. Verify the data printed.
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