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CONTENTS
Page
1.FEATURES
...................................................................................1
2.SPECIFICATIONS
...................................................................................1
3.OPTION
...................................................................................2
4.MAC OPERATION
...................................................................................2
5.BLOCK DIAGRAM
...................................................................................3
6.CIRCUIT EXPLANATIONS .............................................................................4
6-1. Power supply circuit .................................................................................4
6-2. Reset circuit
...................................................................................5
6-3. Data communication between CPU and EEPROM .................................6
6-4. Printer drive circuit ...................................................................................8
6-5. Pin description
...................................................................................9
7.DISASSEMBLY
.................................................................................10
7-1. To open the upper case .........................................................................10
7-2. To remove the Main PCB.......................................................................10
7-3. To remove the keyboard ass'y ...............................................................10
8. DIAGNOSTOC OPERATIONS ....................................................................11
9. IC DATA
.................................................................................16
9-1. LB1268
.................................................................................16
9-2. S-80728AN-Z
.................................................................................16
10.CIRCUIT DIAGRAM
.................................................................................17
11.PCB LAYOUT
.................................................................................28
12. PARTS LIST
.................................................................................29
Содержание 110CR
Страница 18: ...16 9 IC DATA 9 1 LB1268 9 2 S 80728AN Z 1 4 8 5 Equivalent circuit...
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Страница 30: ...11 PCB PAYOUT...
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Страница 37: ...35 4 KEYBOARD BLOCK 14 15 31 16 17 19 20 28 22 18 21 23 25 29 26 27 24 34 32 30 33...
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