Tandy WP-2 Service Manual page 5

List
of
Illustrations
Table
Page
Number
DESCRIPTION
Number
1-1 Front
View
1-1
1-2
Rear View
1-2
1-3
Bottom View
1-3
1-4
Main
PCB
1-4
1-5
LCD PCB
1-5
2-1
DSUB
Connector Screw Removal
2-1
2-2
Removal
of
Main
Batteries
2-1
2-3
Top Case Removal
,
2-2
2-4
LCD
Cable
Removal
2-2
2-5
Keyboard Removal
2-3
2-6
LCD
Removal
2-4
2-7 Main
PCB
Removal
2-5
2-8 Back-up
Battery
Cover and Back-up
Battery
Removal
2-6
2-9 Lower
Case
View
2-6
4-1 Block
Diagram
,
4-3
4-2 Memory
Map
4.5
4-3
Main
RAM
Control
Circuit 4-5
4-4 Expansion
RAM
Control
Circuit
4-6
4-5
ROM
Control
Circuit
4-6
4-6
Interrupt Control 4-9
4-7 Keyboard
Control
,
4-9
4-8
Cassette Interface
Circuit 4-10
4-9
Printer Interface Circuit
,
4.11
4-10
Serial Interface 4-12
4-1
Buzzer
Control
Circuit
4-1
4-12
LCD
Controller
,
4-13
4-13 Power
Supply
4-14
4-14 Power
Supply
Circuit
4-15
6-1
Exploded Vrew
6-1
7-1 Main
PCB
Top
View
7-1
7-2 Main
PCB
Bottom View
7-2
7-3
LCD PCB
View
7-3
A-1
Block Diagram
A-1
A-2 Dot Dimensional Drawing
A-2
A-3
Vo
Adjusting
Circuit
,
A-4
A-4
LCD
Screen
A-5
A-5
Timing Chart
A-6
A-6 Timing Chart
a-8
A-7 Timing Chart
A-8
A-8
Optical Characteristics
Measurement System
A-9
A-9
Definition of
Response Time
A-9
A-10
Definition of
8
and
<b
A-10
A-11
Definition of
Contrast Ratio
A-10
A-1 Operational Precautions
A-1
A-1
LCD
Module
A-13
B-1
RAM
Insertion
B-1
C-1
Keyboard
,
C-1
C-2 Keyboard
,
C-1
C-3
RS-232C
Connector
,
C-4
C-4 Cassette Connector
, ,
C-4
C-5
Printer
Connector
C-4
C-6
External
Card Connector
,
C-4
ni