Veeder-Root TLS Series Manual

Also see for TLS Series: Application guide

Contents

Veeder-Root TLS Series Manual Manual pdf 31 page image

Wiring/Miscellaneous For TLS-IB Consoles W/RS-232 & With & W/O IFSF) Troubleshooting4-12Figure 4-8. Replacing PROM ChipREPLACING THE POWER SUPPLY BOARDWhen to Replace the Power Supply BoardThe Power Supply board must be replaced either when:• Probe data is not being processed. (You can check the Probe Status Indicator [LED1 - see Figure 4-6 onpage 4-10] to verify that the probe is communicating with the TLS-IB. If LED1 is flashing, the CPU is acquiringvalid probe data), or,• The voltage between the GND and 8V test points (Figure 4-5 on page 4-8) on the back of the CPU board isless than 7 Vdc.How to Replace the Power Supply Board1. To replace the Power Supply board, turn Off power to the system.2. Disconnect the CPU cable from the Power Supply board.3. Tag and disconnect probe, power, and overfill alarm relay wiring to the Power Supply board.4. The Power Supply board is secured by two T-15 Torx screws in the top of the board. After removing the Torxscrews, slowly lift up on the board until the lower tabs on the board clear the slots in the bottom of the TLS-IB,then continue to lift the board out.Y2NODEADDRESS 1 2 3 4Y3TLS-IB CPU BOARDPROM chip (U29)S1STATIC SENSITIVE - WEARGROUNDED ANTI-STATICWRIST STRAP BEFOREHANDLING THIS BOARD!1) Orient PROM so that the small indented dot ontop of the chip is on the same side with the smalltriangle embossed in the socket's base; or,2) If the chip is covered with a label you can also orientthe chip correctly if you insert the chip in the socketwith its angled corner in the same angled corner of thesocket.3) Carefully align the chip's pins with the socket's pins.(If you have the pins aligned correctly, the chip will seem todrop into the socket.) Then push down firmly and evenlyon the chip until it snaps into the socket.4) Check to see that all pins are in place and none are bent.OFF