Milnor C4A, Manual, Page: 33 / 36

Ê Location of EPROMs on Processor Board
Depending on machine model and type, the CPU chip can be an Intel 8085 or an Intel 8088. Each microproc-
essor board requires at least one EPROM for proper operation, but the EPROMs are located differently, depending
upon the type of board. This information describes the location and arrangement of the EPROM chips on each type
of board. It also describes where to check the voltages required by the processor board.
Ë 8085 Processor Boards,
NOT Coin Machine
—See FIGURE 3. Install EPROM #1 at the end of the
row, then #2, #3, and #4. Chip #4 goes next to the two soldered chips on the board. See FIGURE 2 for where to
check voltages.
B
C
Î FIGURE 2
(MSSM0217AE)
Î MTA-31 on 8085 Processor Board
(wires not shown for clarity)
Î FIGURE 3
(MSSM0217AE)
Î 8085 Processor Board (NOT Coin Machine)
HOW TO CHANGE EPROMS IN MICROPROCESSORS
AND WHERE TO CHECK THE DC VOLTAGES
MSSM0217AE/9020IV (2 of 5)