Casio 120CR - Initial Setup and Operation Basics; Welcome and Manual Overview

CONTENTS
120CR
160CR Page
1. SPECIFICATIONS........................................................................................ 1
2. INITIALIZE (MAC) OPERATION.................................................................. 2
3. BLOCK DIAGRAM....................................................................................... 3
3-1. PCB CONNECTION..................................................................................................... 3
3-1. BLOCK DIAGRAM....................................................................................................... 4
4. DISASSEMBLY............................................................................................ 5
5. CIRCUIT EXPLANATION ............................................................................ 8
5-1. Power supply circuit .................................................................................................. 8
5-2. Reset circuit ................................................................................................................ 9
5-3. Data communication between CPU and EEPROM ................................................ 10
5-4. Printer drive circuit................................................................................................... 12
5-5. Pin description (CPU uPD78043FGF) ..................................................................... 12
6. DIAGNOSTIC OPERATIONS .................................................................... 14
6-1. To start the diagnostic operation............................................................................ 14
6-2. Check items .............................................................................................................. 14
6-3. Operations................................................................................................................. 15
7. ERROR CODE LIST................................................................................... 19
7-1. Operation error code................................................................................................ 19
8. IC DATA ..................................................................................................... 20
9. PCB LAYOUT ............................................................................................ 21
10. CIRCUIT DIAGRAM ................................................................................... 22
11. PARTS LIST............................................................................................... 29