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Radio Shack Quick Printer II Service Manual

Radio Shack Quick Printer II
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5.2.4
5.2.5
5.2.6
5.2.7
5.2.8
5.2.9
5.2.10
5.2.11
5.2.12
5.2.13
5.2.14
5.2.15
5.2.16
5.2.17
5.3
5.4
5.4.1
5.4.2
5.4.3
5.4.4
5.4.5
5.4.6
5.4.7
5.5
5.5.1
5.5.2
5.5.3
5.6
5.6.1
SECTION
VI
ADDENDA
A.
SystemTiming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
85
_Address Decode . . . . . . .
..
. . . . . . . .
..
. . . . . .
..
. . . . . . . .
..
. . . . . . . . . . . . . . . . . . . . . . . . . . . 87
ROM 87
RAM 98
VideoCircuit 112
Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
114
Real Time Clock . . . . . . . . .
..
. . . . . . . . . . . . . . . . . . . . . . . . . .
..
. . . . . . . . . . . . . . .
..
. . . . . . . . .
..
114
Line PrinterPort
_. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. ..
. .
..
114
GraphicsPort 118
Sound 118
110
Bus Port 118
FDC Circuit 120
RS-232CCircuit 124
Troubleshooting (specific) 126
Schematic8000192
_ 127
PCB
Art (1700254) _ 134
Parts List, PCB Assembly . . . . .
..
. . . . .
..
. . . . . . . . . . . . . . . . . . . . . . . . . .
..
.
..
137
Mini-Disk Drives
(Tan
don TM-50) 143
Power SupplyAssembly 143
Power Supply Description . . . . . . . . . . . . . . . . . .
..
. . . .
..
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
.
..
143
Technical Specifications 147
TheoryofOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
148
Troubleshooting Chart
_. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
158
Testing and Adjustments
_ " 159
Schematic 8000164, 65W Power Supply 8790049
161
Component Layout, 65W Power Supply 8790049 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
163
Circuit Trace, 65W Power Supply 8790049 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
164
Parts List, 65W Power Supply 8790049
_ " 165
CRTDisplay
_........
. _ 169
Specifications
_ 169
Adjustmentprocedures
_
171
TheoryofOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
174
Schematic 23533 (BIW) and 23757 (Green) 179
Parts list 8790612 (BIW) and 8790613 (Green)
181
Options 189
GraphicsBoard 189
Exploded View/Parts
Lists.
. . . . . . . . 199
CaseAssembly . 202
Main ChassisAssembly
_ _ _ 204
Disk Drive Assembly 206
KeyboardAssembly
_. . _ 208
Tandon Operating and Service Manual,
TM50-1 and TM50-2 5-1/4" Flexible Disk Drives

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Radio Shack Quick Printer II Specifications

General IconGeneral
BrandRadio Shack
ModelQuick Printer II
CategoryDesktop
LanguageEnglish

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