8.4.8 Procedure for Replacing the Flash Memory I.C. on Executive III or IV
Boards
This procedure will lead you through the process of changing the TLS operating firm-
ware on an Executive III or IV board. It involves removing the rear service panel and
replacing a 32-pin, DIP Flash-EPROM memory integrated circuit (IC). Contact Qual-
star Technical Support to obtain the necessary integrated circuit.
1.
Remove power from the TLS: first turn the power switch off and then remove the
power cord.
2.
Remove the six Phillips screws securing the access panel on the rear of the li-
brary - refer to Figure 8-15. Care must be taken to not remove the four screws
securing the heatsink panels.
3.
Remove the Flash-Memory IC at U4 (Part Number is 700105) from the Executive
PCBA using a flat blade screwdriver or equivalent tool. Note the IC location (U-
number) is identical on Executive III and IV boards. Pry the IC from either end
slightly and repeat for the other end. Continue this procedure until the part is
loosened enough to be removed by hand. Refer to Figure 8-17.
Pin 1
U4
700105
or
700115
Figure 8-17 Executive III or IV PCBA
4.
Install the new 700105 or 700115 Flash-Memory IC at U4. Note the orientation
of pin 1. Make certain that all pins are fully inserted into the socket.
5.
Replace the access panel and secure it with the six Phillips screws.
8-16 Firmware
Updating
501380 Rev. B
