Sharp PC-7200 Service Manual page 5

(28) Power switch
The POWER switch turns the computer on and off. When turning
on the
-system,
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turn on the computer power.
(29) Cooling fan
Prevents the computer against excessive heat generated during
operation. Do not block this ventilation opening by positioning
the computer too close to a wall etc.
Keyboard Layout
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Figure 1-3
1-4. SPECIFICATIONS
The specifications below apply to the system unit and keyboard unit.
1-4-1. System Unit Specifications
Main Logic
CPU
Processor ....
80286
Clock frequency ...
6MHzl8MHzl9.6MHz
MPX (Option)
Processor ... 80287
ROM
Element ... 27256 EP·ROM x2
Capacity ... 64K bytes
include IPL, BIOS, diagnostic program and graphics character
fonts
RAM
Element... MOS LSI 256K x1 bitD·RAMx16, 64K x4 bitD·RAM
x4
Capacity ... 640K bytes
OPTION
Element ... MOS LSI 256K x4 bit D·RAM x8
Capacity ... 1 M bytes
Clock/Calendar ... HD146818 (MC146818 compatible) battery
back-up
DMA ... 7 channels (8237A·5x2)
Interrupt Level ... 15 (8259x2)
1-2. Specifications
1-2-1. Physical specifications
The physical specifications for the PC-7200 are shown below.
• Main unit (includes keyboard)
(1) Dimensions
Width: 410mm (16.1")
Depth: 160mm (6.3')
Height: 243mm (9.6")
1 -3
PC-7200
(30) Expansion connector
Used for connection of the expansion box.
1-3-2. Keyboard
Figure 1-3 shows the keyboard layout forthe PC-7200. The keyboard
has the standard QWERTY layout with 10-programmable function
keys, numeric keypad/cursor movement keys and special keys. The
three status indicators show the ON/OFF status of the Caps
(Capitals) Lock, Num (Numeric) Lock, and Scroll Lock keys.
Page
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(2) Weight
Net: 7201 8.Skg (18.8 Ib)
7202 9.3kg (20.S Ib)
7021 9.Skg (21.0 Ib)
(with the keyboard)
(3) Power requirements
• 100V type
9Q-132V AC SO/60Hz
1.0A (includes output for CE·700P)
0.8W
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• 200V type '14,.-
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18Q-264V AC SO/60Hz
• Cable length: 2.0m (78.7")
(4) Environment
Temperature:
•
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10 to 35 degrees C operating (50 to 95 degrees F)
-28 to 60 degrees C storage (0 to 140 degrees F)
Humidity;
-
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20 to 80% operating with no condensation; up to 90% storage
1-2-2. Component specifications and characteris-
tics
The PC-7200 consists of the following components, whose
specifications and characteristics are shown below.
• KEYBOARD
(1) Unit dimensions
Width: 4fOmm (16.1")
Depth: 182.Smm (7.2")
Height: 37.Smm (max.) (1.S")
(2) Unit weight
1.0Skg (2.4 Ib)
(3) Coiled cable
Diameter: 1Smm (0.6")
Length: 270±10mm coiled state (10.6±0.4")
1,500mm stretched state! (4'11")
Weight: SSg (1.94 oz)