Wiring/Miscellaneous For TLS-IB Consoles W/RS-232 & With & W/O IFSF)
Troubleshooting
4-9
PROM CHIP REPLACEMENT (SOFTWARE UPGRADE)
The PROM chip (U29) is replaced when a software upgrade is installed. This procedure requires that you perform
a RAM clear.
1.
If possible, record the current setup information. Switch Off power to the system.
2.
Open the front door of the TLS-IB. The CPU board is installed in the door.
3.
Attach an anti-static strap to your wrist and to a good ground.
4.
Move RAM clear jumper from NML to CLR position (Figure 4-6). Switch On power to TLS-IB and wait 30
seconds, then switch Off power to TLS-IB. Move the RAM clear jumper back to NML position.
5.
Disconnect the ribbon cable connector from the CPU board. Remove the CPU board following the
instructions on the previous page.
6.
Locate the PROM chip on the board (see Figure 4-5).
7.
Remove the PROM chip following instructions in Figure 4-7.
8.
Replace the PROM chip following instructions in Figure 4-8.
9.
Replace the CPU board in the front door of the TLS-IB. Connect the CPU board cable to the Power Supply
board.
10. Switch On power to the TLS-IB and check your system configuration for proper setup.
OFF
