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101A
Technical manual
Centronics 101A Technical Manual
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Also See for 101A
:
Operator's manual
(15 pages)
,
Technical manual
(214 pages)
,
User's & technical manual
(204 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Circuit)
Table of Contents
Model Lola Printer (Front Cover Removed)
Printing the Letter (H)
Print Head Components
Paper Movement Mechanism
Printer Dimensions
Functional Flow Chart
Basic Timing Circuit
Prime Timing
Prime Circuit
Select Circuit
Input Data Timing - no Busy Condition
Data Input Circuit
Acknowledge Circuit
Input Data Causing Busy
Clocking Input Data into the Buffer
Function Decoder
Function Decoder (Figure 4-12)
Character Printing (Figure 4-13)
Character Registration and Timing
Initiating The'printing Operation (Figure 4-14)
Print Head Motion (Figure 4~14; Schemattc - Section 7)
Character Printing Block Diagram
Forward and Reverse Clutch Drive Circuits
Character Registration and Timing Circuit
Character Generator (ROM - Figure.4-16)
Print Head Operation (Figures 4-18, 4-19)
Normal and Elongated Characters
Power Driver Circuits (Schematic, 'Section 7)
Power Driver Waveform
4.5.7 Terminating the Printing Operation
4.6 Paper Movement
Line Feed Circuit
Form Feed
Line Feed Timing
Form Feed and Vertical Tab Circuit
Vertical Tab
Form Feed and Vertical Tab Timing
4.6.4 Vertical Format Unit
Line Feed Solenoid Driver (Schematic - Section 7)
Paper Time out Circuit (Figure 4-21)
4.7 Special Functions
4.7.2 Delete
Bell (Figure
Bell Circuit
Paper Empty (Figure 4-26)
Motor Control Mounting
Motor Control Board Interconnection Diagram
Motor Control Timing
Fault Circuit (Figure 4-30)
Power Supplies (Figure 4-31, Schematics - Section 7)
Fault Circuit
Power Distribution Diagram
Regulator (Schematic #63011143)
4.8.3 +35V Power Supply, Unregulated
Introduction
5.2 Mechanical Assemblies
Cover Figure a
Carriage Mechanism Figure HA
Driving Mechanism (Figure 8-4 and Figure 8-5)
Spring Drum Figure HC
Series 101 Drive Train
Main Motor Drive and Drive Belt Arrangements
Bushing End-Play Adjustment for Preload Clutch Shaft (HB-50)
Damper (Figure HD)
Frame (Figure HE)
Flexible Timing Fence Mounting, Series 101
Vertical and Horizontal Alinement of Single Channel Optics Housing
Paper Feed Mechanism (Figure HF)
Paper Empty
5.2.8 Pin Feed Unit (Figure 8-8) Hg
Removal of Belt (32) Idler Slide (28), and Drive Pulley
Adjustment for Paper Holder Gate
Form Feed Mechanism (Figure HH)
Two Adjustments, Gear with Stop Cam (HH-23) and Inside CAM (HH-14)
Ribbon Feed Mechanism (Figure HI)
Backlash Adjustment, Bevel Gear (HI-43, 59)
Driving Slide Shaft a - Adjustment
Ribbon Reversing Rod Adjustment
Ribbon Reverse Timing
Electrical Hardware (HJ)
Paper Stacker and Guide
Electrical Adjustments (Model 101/101A)
Video Amplifier Adjustment (Series 100)
Mechanical Adjustments
Preventive Maintenance
Troubleshooting Guide
Recommended Tools
Schematic Diagram, Electronic Card #1 (Sheet 2 of 3)
Schematic Diagram, Electronic Card #2 (Sheet 1 of 3)
Schematic Diagram, Electronic Card #2 (Sheet 2 of 3)
Schematic Diagram, Electronic Card #2 (Sheet 3 of 3)
Schematic Diagram, !12
Multitap 50/60 Hz Transformer
Interconnection Diagram, Connector Board
Schematic Diagram, Motor Control (Optional). Schematic Diagram, LED Tape Reader (Optional) Component Board Assembly, Electronic Card #1
Component Board Assembly, Electronic Card #2
Component Board Assembly, Video Amplifier
Schematic Diagram, Electronic Card #1 (Sheet 3 of 3)
Schematic Diagram, Power Driver Board (Sheet 1 of 2)
Schematic Diagram, Power Driver Board (Sheet 2 of 2)
Schematic Diagram, Video Amplifier
Schematic Diagram, +5V Volt Regulator
Wiring Diagram, Printer Mechanism
Component Board Assembly, Power Driver Board
Harness Assembly, Motor Control
W3 Power Cable Assembly
Mechanical Subassemblies Series
Cover Assembly - a
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See also:
Operator's Manual
,
Technical Manual
lj~@C=fl~U@&[b
~&~U:n&[b
MODEL101A PRINTER
MAY 1978
Centronics No. 37400020 Rev. K
I:EnTROnll:S
. data computer corp.
HUDSON, NEW HAMPSHIRE 03051
TELEPHONE (603)
88_3 -
0111
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