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Centronics 306 Manuals
Manuals and User Guides for Centronics 306. We have
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Centronics 306 manuals available for free PDF download: Technical Manual
Centronics 306 Technical Manual (219 pages)
Brand:
Centronics
| Category:
Printer
| Size: 13.99 MB
Table of Contents
Table of Contents
4
Section Page
5
Model 306 Printer (Top and VFU Covers Removed)
12
Printing the Letter (H)
14
Paper Movement Mechanism
14
Right Front View of
18
Rear View of
19
Printer Dimensions
20
Initializing the Printer
22
Character Printing
22
Prime Timing
25
Input Data Timing - no Busy Condition
28
Input Data Timing - Causing Busy Condition
29
4.6.2 Character Registration and Timing
35
Initiating the Printer Operation
35
4.6.4 Print Head Operation
35
4.6.5 Power Driver Circuits
35
Character Generator (ROM)
35
Forward Clutch Interconnection Diagram
36
Character Timing
37
4.6.4 Print Head Operation
42
Power Driver Circuits
43
Print Head Timing
43
Paper Movement
44
4.7.1 Line Feed
46
Line Feed Timing
46
4.7.3 Vertical Tab
49
Vertical Format Unit (Optional)
49
Line Feed Solenoid Driver
50
Special Functions
51
Bell (Optional)
51
Motor Control (Optional)
52
Motor Control Timing
53
4.9 Power Supplies
54
And -12V Regulators
55
Power Supply (Unregulated)
55
Outputs from Lsi Chips (Me25 and Me16)
59
4.10.1 Lsi Chip Me25
59
4.10.2 Lsi Chip Me16
62
Introduction
66
Mechanical Assemblies
66
Carriage Mechanism
66
Carriage Movement Adjustments
70
PLATEN {Figure AB
71
PAPER PAN (Figure AC)
74
Driving Mechanism
76
Adjustment of Timing Belt (AD-15) (View from Back of Printer, Forward)
78
Forward Clutch Adjustment (Air-Gap)
84
Bushing End-Play Adjustment for (Forward Clutch Shaft Air-Gap and Preload Clutch)
84
Idler Pulley Assembly (Figure AF)
86
Adjustments
88
Reed Switch (AG)
89
Reed Switch Assembly, Left (AG)
90
Left Reed Switch (AG-1) Static-Adjustment
91
PRINTER BASE {Figure AH
92
Frame (Figure AI)
92
Paper Feed (Figure AJ)
94
Pin Feed Unit (Figure AK)
97
Frame - AI
98
Ribbon Feed (Figure AL)
99
Locating Idler Pulley Assembly
102
Locating Dimension for Ribbon Feed Rack
103
Rack and Pinion Adjustment, Ribbon Mechanism
104
Ribbon Feed Plate and Guide Bar (Left Side)
107
Adjusting Nuts for Right Pawl Operator Movement
107
Right Pawl Operator Starting Position
108
Pawl, Ratchet and Cam Movement
109
Cover (Figure AM)
110
Operator Panel (Figure AN)
110
Electrical Components (Figure AO)
111
Electrical Components (Figure AP)
111
Electrical Components (Figure AQ)
111
Print Head and Associated Assemblies
111
Fibre Optics Head, Adjustment from Optic Fence
115
Fibre Optics Head Alinement and Flexible Timing Fence
115
Motor Control Location and Installation
116
Vertical Format Unit (VFU) - Option
117
Removal/Replacement of Drive Shaft 63060142-5001 and Couplings 63060144-2002 for VFU Assembly
118
Printer Drive Mechanism, Model
119
Paper Tape Reader Adjustment
119
Printer Drive Mechanism, Model
120
Section Maintenance
122
Preventive Maintenance
122
Troubleshooting Guide
122
Schematic Diagram, Logic/P.s. Board (+5V) (Sheet 2 of 4)
133
Schematic Diagram, Logic/P.s. Board (+5V) (Sheet 4 of 4)
135
Schematic Diagram, Power Driver Board (Sheet 1 of 2)
136
Schematic Diagram, Power Driver Board (Sheet 2 of 2)
137
Schematic Diagram, Video Amplifier
138
Interconnection Diagram, Connector Card
139
Wiring Diagram, Printer Mechanism
140
Schematic Diagram, Elapsed Time Indicator (Option)
141
PC Board Ass'y, Logic/Power Supply Board (Sheet 1 of 2)
144
PC Board Ass'y, Logic/Power Supply Board (Sheet 2 of 2)
145
PC Board Ass'y, Video Amplifier and Cable Ass'y
152
PC Board Ass'y, Connector Card
154
PC Board Ass'y, Elapsed Time Indicator (Option)
156
Cable Ass'y, Computer Input
160
Cable Ass'y, Data Input
164
Platen - AB
164
Driving Mechanism
164
Pin Feed - AK
164
Cover - am
164
Carriage - AA
165
Paper Pan - AC
169
Driving Mechanism
173
Idler Pulley - AF
177
Reed Switch - AG
179
Base - AH
181
Paper Feed - AJ
185
Ribbon Feed - al
191
Operator Panel - an
196
Electrical Components (Part 1 of 3) - AO
198
Electrical Components (Part 2 of 3) - AP
200
Electrical Components (Part 3 of 3) - AQ
202
Print Head and Associated
204
Tape Reader Assembly 68060125-5003 (Option)
206
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Centronics 306 Technical Manual (194 pages)
Brand:
Centronics
| Category:
Printer
| Size: 13.34 MB
Table of Contents
Table of Contents
5
Figure Page
7
Logic Board Timing
10
Model 306 Printer (Top and VFU Covers Removed)
11
Paper Movement Mechanism
13
Special Functions
14
Bell (Option)
14
De)Lete (Octal
14
Printer Dimensions
20
Data Input Timing
27
Timing of RAM Addressing During Print Cycle
34
Forward Clutch Interconnection Diagram
36
Print Head Timing
41
Double Line Feed Timing
45
Form Feed and Vertical Tab Timing
45
Timing During Bottom of Form Function
48
Paper Empty
49
Motor Control (Optional)
49
Power Supplies
52
Regulator
54
LSI Elements Inputs/Outputs
56
Removal, Replacement and Adjustment Procedures
62
Introduction
62
Mechanical Assemblies
62
Carriage Mechanism
63
Platen
65
Carriage Movement Adjustments
65
Paper Pan
66
Adjustment of Timing Belt
70
Bushing End-Play Adjustment for Forward Clutch Shaft, (Preload Clutch)
73
Driving Mechanism
74
Idler Pulley Assembly
74
Location of Drive Pulley Bracket
74
Reed Switch Assembly, Left
77
Left Reed Switch Static-Adjustment
77
Reed Switch Printer Base
78
Frame
79
Paper Feed
80
Pin Feed Unit
82
Adjustment for Paper Holder Gate
82
Removal of Belt (32) Idler Slide (28), and Drive Pulley
84
Ribbon Feed
85
Locating Idler Pulley Assembly
87
Torque Limiting Device (Brake)
88
Cover
110
Operator Panel Electrical Components
142
Electrical Components
142
Print Head and Associated Assemblies
142
Parallel Interface Specifications
188
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