MERRICK MC3 Hardware Manual

Board Features
COM 1
RS-232
COM 2
RS-485
TO LTI BOARD
RESET
U53A
U14
DALLAS
SRAM
CR1
JP1
FLASHLDR
JUMPER
J1
J2
JP4
JP5
JP6
JP3
PROGRAMMING SIM SOCKET
PF GREEN
+5V RED
+12V YELLOW
-12V BLUE
COM BLACK
COM BLACK
Jumper Settings
Jumper Description
JP1 FLASH PROGRAMMING
Strap to program
Un-strap for Normal operation
JP4 Memory Size
Strap 1 & 2 for 1 to 2 Meg Simm
Strap 3 & 4 for 4 to 8Meg Simm
Strap 5 & 6 for 16+ Meg Simm (may not recognize larger)
JP6 NMI INPUT
Older power supplies connect power fail to pins 3 & 4
Printer Operation (Old CPU Only)
MC³ CPU board must be specifically configured for Printer operation. Call Merrick for details to
verify your CPU board configuration.
MC3 Hardware Manual 16

MERRICK MC3 Specifications

General

Brand	MERRICK
Model	MC3
Category	Controller
Language	English