Radio Shack 26-3801 - Page 4

3
TABLE
OF
CONTENTS
SECTION
NUMBER
I
INTRODUCTION
SYSTEM OVER
VIEW
1.
Specification
2.
Switches and Connecters
3.
Key
Layout
4.
LCD character Font
II
DISASSEMBLY/REASSEMBLY
1.
Disassembly
2. Reassembly
III
MAIN
P.W.
BOARD TECHNICAL
DESCRIPTION
1.
LSIs
2.
Memory
3.
Address Decoding and
Bank
Description
4. Memory Map
5.
I/O Map and
I/O Port
Description
6.
Keyboard
7.
cassette Interface Circuit
8.
Printer Interface Circiut
9
Bar
Code Reader
Interface
Circuit
10.
Buzzwe Control Circuit
11.
System Bus
12.
LCD
Interface
Circuit
13.
Clock
Circuit
14. Serial
Interface
Circuit
15.
Power Supply and Auto
Power Off Circuit
16.
Reset Circuit
MAIN
P.W.
BOARD PARTS
LIST
IV
LCD
P.W.
BOARD TECHNICAL
DESCRIPTION
1. LCD
Pannel
2. LCD Contrl Circuit
3. LCD
Waveform
LCD
P.W.
BOARD PARTS
LIST
V
ILLUSTRATION PARTS CATALOG
ILLUSTRATION PARTS
LIST