Radio Shack TRS-80

TABLE
OF
CONTENTS
(cont'd)
SECTION
PAGE
NUMBER
NUMBER
IV
TROUBLESHOOTING
43
Fault
Isolation
44
Diagnostic
Notes
44
Video
interface
44
Joystick
Interface
45
Cassette
Interface
45
Keyboard
Interface
45
RS-232
Interface
45
Power
Supply
46
Power
Supply
Voltage
Levels
—
Illustration
47
V
PARTS
LISTS
49
Printed
Circuit
Board Parts
List
50
Illustrated
Parts
Breakdown
56
Illustrated
Parts
Breakdown
—
Illustration
57
VI
PRINTED
CIRCUIT
BOARD
59
Printed
Circuit
Board
—
Component
Side
60
Printed
Circuit
Board
—
Circuit
Side
61
VII
SCHEMATIC
63
Color
Computer
Schematic
—
Sheet
1
64
Color
Computer
Schematic
—
Sheet
2
66
Color
Computer
Schematic
—
Sheet
3
68