Martin PAL 1200 User Manual page 25

U P D AT I N G A / B S E C T I O N S O F T WA R E ( E P R O M )
Having accessed the A and B-section PCBs, as described earlier in this section, you can now replace the EPROMs. Please fol-
low the instruction below.
Ensure that the fixture is disconnected from mains power before proceeding.
To avoid damaging the EPROM by electrostatic discharge you should touch the heat
sink on the PCB (GND) before, and when, removing or inserting the EPROM.
1. On the A/B section PCBs remove the existing EPROM (IC102).
2. Place the new EPROM in the IC socket, ensuring that all pins enter the socket correctly, and that the
EPROM is correctly oriented. Then press it firmly into the socket.
U P D AT I N G T H E R E C E I V E R M O D U L E
Having accessed the receiver module PCB, as described earlier in this section, you can now replace the CPU. Please follow the
instruction below.
Ensure that the fixture is disconnected from mains power before proceeding.
To avoid damaging the CPU by electrostatic discharge you should touch casing of the
x-tal (GND) before, and when, removing or inserting the CPU.
1. On the PCB(s) remove the existing CPU (IC101).
2. Place the new CPU in the IC socket, ensuring that all pins enter the socket correctly, and that the CPU is
correctly oriented. Then press it firmly into the socket.
W A R N I N G !
C A U T I O N !
W A R N I N G !
C A U T I O N !
CPU (IC 101)
X-tal casing (GND)
PAL 1200, PAL 1200 E, PAL 1200 FX User Manual
EPROM (IC102)
Heat sink
25