2 – 3
(2)
Program ROM
This is a 256
×
16 bits (4M bit) [MAX] EPROM with the control program for the printer
stored. The MPU executes instructions under this program.
The program ROM is assigned to the program memory area of the MPU and is fetched
by the PSEN signal of the MPU.
The following shows the operation of the memory access.
MPU CLOCK
A0~A17
PG-N
PSEN-N
D0~D15
Program
Program
Program
IN
IN
IN
CSO
PSEN
CE
OE
PG-N
D0~D15
A0~A17
MPU
ROM
Summary of Contents for MICROLINE 320
Page 7: ...1 2 1 2 Options 1 Cut sheet feeder unit CSF Attachment assy 2 Pull tractor assy Single bin CSF...
Page 8: ...1 3 3 Bottom push tractor unit 5 Serial I F RS 232C 4 Roll paper stand Narrow only...
Page 36: ...2 28 Figure 2 6 Ribbon cartridge Drive gear Ink reservoir...
Page 51: ...2 43 Platen Figure 2 16 Ribbon protector Printhead Carriage frame assembly...
Page 90: ...5 2 Carriage shaft...
Page 98: ...5 10 9 Carriage Assy NK2 10 SUS Bearing part of the guide roller EM 30L B...
Page 119: ...6 21 Replace RS232C board Remedied No Yes End Replace driver board...
Page 121: ...B 1 B SPARE PARTS LIST...
Page 122: ...B 2 Figure 11 1 Upper Cover Assy 1 2 3 4...
Page 124: ...B 4 Figure 11 2 Printer General Assy 6 9 8 2 7 4 5 3 10 1...
Page 129: ...B 9 Figure 11 4 Carriage Assy 12 9 8 6 14 11 10 1 13 7 5 4 3...
Page 131: ...B 11 Figure 11 5 Option Spare Parts 1 2 3 4 5 6 7 Pull Tractor Bottom Tractor I F Board...
Page 145: ...Microline 320 321 Turbo Service Manual Part Number 59273701 Printed in the USA...
