Sharp MZ-80B Service Manual

•
•
•
•
•
• MZ-80B General
CPU LH0080A (Z 80A-CPU)
Key Layout
Keys 92
Clock 4MHz
ASCII Standard, 10 Numerical keys,
Memory
ROM 2K bytes
Function keys, Cursor control keys,
Cassette tape deck control keys
RAM 64K bytes (dynamic RAM)
Clock function
Built-in
Editor function
Cursor control;
up, down, right, left,
Display 9" CRT (green display)
home, clear.
8 x 8 dot matrix
Edit key
1) Characters; 1000
Delete key
~-,--.-
--._-- ----
(40 characters x 25 lines)
Power supply
AC 240V (50Hz)
2)
Characters; 2000
Temperature Operating temp;
0° to 35°C
(80 characters x 25 lines)
Storage temp;
_15° to 60°C
----
1), 2): software change-over Humidity
Lower than 80%
Cassette Standard audio cassette tape
Weight Approx_ 16kg
Data transfer speed;
1800 bits/sec.
. ---
_.-
Dimensions Width 45cm
Data transfer system; SHARP PWM
Depth 52cm
Manual or Automatic control
Height 27cm
Sound output
400mW max. (440Hz)
_ .. --
• CPU Board Section
CPU LH0080A(Z80A-CPU)
1 pc. Programmable
l
--
.- .
--
counter
8253
1 pc.
PlO
LH0081
A (Z80A-PIO)
1 pc.
.
Programmable
ROM
IPL 1 pc. 12K bytes)
!
Character generator 1 pc, (2K bytes)
peripheral
8255
1 pc_
I
1--.
interface
i
RAM
Standard; 16K RAM 32 pcs_
--- ---
I
(64K bytes)
Other
IC's
40 pcs.
I
Video RAM; 1 pc.
(2K bytes)
I
• Power Supply Section
• Graphic RAM (I) PWB Section
------ -
Input
AC
240V (50Hz)
~-----
Output 5V
RAM
Static RAM; 4 pes. 18K bytes)
---- ---t------------ ._J
Other IC's 17 pes. .J
-5V
12V
(stabilizing)
12V
(non-stabi lizing)
- ----
NOTE Specifications and appearance are subject to change without prior notice for improvement. In such
a case, the explanation here may be a little different from the product .
-1-

Sharp MZ-80B Specifications

General

Brand	Sharp
Model	MZ-80B
Category	Desktop
Language	English