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2.1.02
Microprocessor (MPU) and Peripheral Circuits
Microprocessor
Q3: M67X640V1
The MicroProcessor Unit (MPU) is the nucleus of the control circuit. Various peripheral
circuits operate under program control of this microprocessor. The MPU (Q3) controls all
aspects of printer operation.
Program ROM for the MPU
Q4: 27C202K
This 2Mbit Read Only Memory (ROM) contains the control program for the printer. The
MPU operates under program control.
This ROM also stores the resident character fonts.
DRAM
Q10 and Q11
The Dynamic Random Access Memory (RAM) chips, each consisting of 64 K x 4 bits, are
used as the Command Buffer, Receive Buffer and Print Buffer.
The total buffer size is 64 K x 8 bits. The RAM speed is 120 ns.
EEPROM
Q14: 93C06N
This 256-bit serial Electrically Erasable and Programmable Read Only Memory (EEPROM)
stores the menu data and initial settings for the LSI circuits.
Principles of Operation
2 - 2
Pacemark 3410
Summary of Contents for Pacemark 3410
Page 1: ...Pacemark 3410 Service Handbook P N 59249702...
Page 2: ......
Page 3: ...Pacemark 3410 Service Handbook...
Page 15: ...COURSE ADMINISTRATION...
Page 16: ......
Page 44: ...4 Comments Course Administration i 28 Pacemark 3410 Service Handbook...
Page 45: ...SECTION ONE SPECIFICATIONS...
Page 46: ......
Page 63: ...SECTION TWO PRINCIPLES OF OPERATION...
Page 64: ......
Page 69: ...Block Diagram 2 A pcx Pacemark 3410 2 5 Principles of Operation...
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Page 85: ...SECTION THREE MAINTENANCE...
Page 86: ......
Page 90: ...This page was intentionally left blank Maintenance 3 4 Pacemark 3410 Service Handbook...
Page 93: ...4 1 3 5 6 2 A 3 2 01 pcx Pacemark 3410 Service Handbook 3 7 Maintenance...
Page 95: ...1 2 3 2 02 pcx Pacemark 3410 Service Handbook 3 9 Maintenance...
Page 97: ...7 3 1 8 5 4 2 6 3 2 03 pcx Pacemark 3410 Service Handbook 3 11 Maintenance...
Page 99: ...2 1 1 3 5 4 3 2 04 pcx Pacemark 3410 Service Handbook 3 13 Maintenance...
Page 101: ...5 4 1 2 3 3 2 05 pcx Pacemark 3410 Service Handbook 3 15 Maintenance...
Page 103: ...3 1 2 11 10 9 8 4 5 1 6 7 3 2 06 pcx Pacemark 3410 Service Handbook 3 17 Maintenance...
Page 105: ...4 A 1 2 6 6 3 6 5 B 3 2 07 pcx Pacemark 3410 Service Handbook 3 19 Maintenance...
Page 107: ...2 3 7 1 6 5 4 3 2 08 pcx Pacemark 3410 Service Handbook 3 21 Maintenance...
Page 109: ...2 3 1 3 2 09 pcx Pacemark 3410 Service Handbook 3 23 Maintenance...
Page 111: ...4 1 2 3 3 2 10 pcx Pacemark 3410 Service Handbook 3 25 Maintenance...
Page 113: ...3 2 1 3 2 11 pcx Pacemark 3410 Service Handbook 3 27 Maintenance...
Page 115: ...5 4 3 1 2 3 2 12 pcx Pacemark 3410 Service Handbook 3 29 Maintenance...
Page 117: ...4 3 2 1 A 5 3 2 13 pcx Pacemark 3410 Service Handbook 3 31 Maintenance...
Page 119: ...1 4 3 2 5 A 3 2 14 pcx Pacemark 3410 Service Handbook 3 33 Maintenance...
Page 121: ...1 2 3 2 15 pcx Pacemark 3410 Service Handbook 3 35 Maintenance...
Page 123: ...3 8 5 7 6 4 1 2 3 2 16 pcx Pacemark 3410 Service Handbook 3 37 Maintenance...
Page 125: ...3 1 9 2 1 6 5 4 8 7 3 2 17 pcx Pacemark 3410 Service Handbook 3 39 Maintenance...
Page 127: ...2 1 3 2 18 pcx Pacemark 3410 Service Handbook 3 41 Maintenance...
Page 129: ...1 3 2 1 3 3 2 19 pcx Pacemark 3410 Service Handbook 3 43 Maintenance...
Page 131: ...3 1 2 3 2 20 pcx Pacemark 3410 Service Handbook 3 45 Maintenance...
Page 133: ...1 2 3 4 5 7 6 3 2 21 pcx Pacemark 3410 Service Handbook 3 47 Maintenance...
Page 135: ...8 9 6 8 4 5 3 1 2 7 10 3 2 22 pcx Pacemark 3410 Service Handbook 3 49 Maintenance...
Page 137: ...1 2 1 3 3 2 23 pcx Pacemark 3410 Service Handbook 3 51 Maintenance...
Page 139: ...1 A 2 3 2 3 2 24 pcx Pacemark 3410 Service Handbook 3 53 Maintenance...
Page 141: ...1 2 5 6 7 4 3 3 2 25 pcx Pacemark 3410 Service Handbook 3 55 Maintenance...
Page 143: ...4 1 3 2 1 3 2 26 pcx Pacemark 3410 Service Handbook 3 57 Maintenance...
Page 145: ...2 3 1 3 2 27 pcx Pacemark 3410 Service Handbook 3 59 Maintenance...
Page 147: ...2 3 6 5 1 4 7 1 8 3 2 28 pcx Pacemark 3410 Service Handbook 3 61 Maintenance...
Page 153: ...1 3 2 5 4 3 2 31 pcx Pacemark 3410 Service Handbook 3 67 Maintenance...
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Page 159: ...Diagram 3 3 01c pcx Pacemark 3410 Service Handbook 3 73 Maintenance...
Page 166: ...This page was intentionally left blank Maintenance 3 80 Pacemark 3410 Service Handbook...
Page 180: ...This page was intentionally left blank Maintenance 3 94 Pacemark 3410 Service Handbook...
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Page 188: ...This page was intentionally left blank Maintenance 3 102 Pacemark 3410 Service Handbook...
Page 196: ...This page was intentionally left blank Maintenance 3 110 Pacemark 3410 Service Handbook...
Page 197: ...SECTION FOUR FAILURE ANALYSIS...
Page 198: ......
Page 200: ...This page was intentionally left blank Failure Analysis 4 2 Pacemark 3410 Service Handbook...
Page 214: ...This page was intentionally left blank Failure Analysis 4 16 Pacemark 3410 Service Handbook...
Page 232: ...This page was intentionally left blank Failure Analysis 4 34 Pacemark 3410 Service Handbook...
Page 236: ...This page was intentionally left blank Failure Analysis 4 38 Pacemark 3410 Service Handbook...
Page 246: ...Layout Diagram 4 6 01a pcx Failure Analysis 4 48 Pacemark 3410 Service Handbook...
Page 249: ...APPENDIX A BOARD DIAGRAMS...
Page 250: ......
Page 253: ...A 2 00 pcx Pacemark 3410 Service Handbook A 3 Board Diagrams...
Page 255: ...A 2 01 pcx Pacemark 3410 Service Handbook A 5 Board Diagrams...
Page 257: ...A 2 02 pcx Pacemark 3410 Service Handbook A 7 Board Diagrams...
Page 259: ...A 2 03 pcx Pacemark 3410 Service Handbook A 9 Board Diagrams...
Page 261: ...A 2 04 pcx Pacemark 3410 Service Handbook A 11 Board Diagrams...
Page 263: ...A 2 05 pcx Pacemark 3410 Service Handbook A 13 Board Diagrams...
Page 265: ...A 2 06 pcx Pacemark 3410 Service Handbook A 15 Board Diagrams...
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Page 267: ...APPENDIX B ILLUSTRATED PARTS LISTING...
Page 268: ......
Page 279: ...1 B 2 30 pcx Pacemark 3410 Service Handbook B 11 Illustrated Parts Listing...
Page 281: ...4 3 1 2 B 2 01 pcx Pacemark 3410 Service Handbook B 13 Illustrated Parts Listing...
Page 285: ...1 2 5 3 4 6 B 2 03 pcx Pacemark 3410 Service Handbook B 17 Illustrated Parts Listing...
Page 287: ...1 2 3 6 5 3 7 4 B 2 04 pcx Pacemark 3410 Service Handbook B 19 Illustrated Parts Listing...
Page 293: ...1 3 4 5 9 7 10 6 8 2 B 2 07 pcx Pacemark 3410 Service Handbook B 25 Illustrated Parts Listing...
Page 297: ...2 1 B 2 05 pcx Pacemark 3410 Service Handbook B 29 Illustrated Parts Listing...
Page 301: ...1 B 2 10 pcx Pacemark 3410 Service Handbook B 33 Illustrated Parts Listing...
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