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280B Series
Scully 280B Series Manuals
Manuals and User Guides for Scully 280B Series. We have
1
Scully 280B Series manual available for free PDF download: Instruction And Maintenance Manual
Scully 280B Series Instruction And Maintenance Manual (241 pages)
Recorder-Reproducer
Brand:
Scully
| Category:
Turntable
| Size: 97.92 MB
Table of Contents
Table of Contents
4
General Information
9
General
9
Professional Recorder/Reproducer Series 280B
9
Models of 280B Series Recorder/Reproducer
10
Tape Transport
12
Electronic Assembly
12
Head Assembly
12
Optional and Accessory Equipment
12
Remote Control Unit Accessory
13
Sect Ion 2. Installation
14
General
14
Unpacking
14
Console Mounting
14
Rack Mounting
14
Power Supply Jumper
18
Playback Mode
19
Record Mode
19
Tape Threading
19
Selecti Gspeed and Applying Power
19
General
19
Operation
19
Controls and Indicators
20
Sync Mode
21
Edit Mode
21
Tape Threading Path
21
Lubri Ation
22
Demagnetizing
22
Cleaning
22
General
22
Preve Ntive Iviaintenance
22
Functional Checks and Adjustments
24
General
24
Functional Check
24
Tape Transport Assembly
25
Transport Logic
25
Constant Tension
25
THEORY of OPERATION (Continued)
25
Squelch Circuit
25
Sync Mode
25
Play Mode
25
System Block Diagram
26
Transport, Bottom View
27
Transport Logic Operation
28
Maintenance
29
Mechanical Adjustment
29
Tape Head Assembly Adjustments
29
Brake Adjustments
30
Tension Posts
31
Suggested Method of Adjusting Brake Torque
31
Head Adjustment
32
Pinch Roller Adjustment
34
Tension Post Adjustments
34
Constant Tension Adjustment
36
Constant Tension Adjustment Procedures
36
ATL Adjustments
37
Checkout and Alignment Procedures
37
Constant Tension Assembly
37
ATL Adjustment
37
Test Equipment Required
38
Preliminary Procedures
38
Playback Alignment
38
Initial Test Setup
38
Electronics Assembly, Top View
39
Motherboard PWA
39
Record Alignment
40
Record Bias Set
40
Equalization PWA Adjustments
40
Regulator, Bias Oscillator and Amplifier PWA
40
Regulator, Bias Oscillator and Amplifier PWA
42
Bias Amplifier PWA Adjustment and Test Points
43
Record Calibrate Alignment
44
Record Equalization
44
Erase Alignment
44
Depth of Erase
44
Signal-To-Noise Ratio
44
Distortion
44
Flutter
45
Schematic Diagrams and Parts List
46
General
46
Transport Logic, Schematic Diagram
47
Record/Playback Amplifier PWA
50
Motherboard PWA Schematic Diagram
52
Schematic Diagrams and Parts List
52
Interconnecting Cable Assembly
72
Tape Break Switch Assembly
73
Dancer Assembly
78
Tape Break Arm Assembly
79
Pinch Roller Connecting Rod Assem Bly
83
ATL Solenoid Assembly
84
Torque Motor and Brake Assembly, Take-Up
91
ATL Linkage Assembly
93
Turntable Reel Assembly Parts Location
94
Transport Control Logic Harness Assembly
101
Transport Control Power Harness Assembly
103
Capstan Motor Assembly
104
Scrape Filter Assembly
105
Head Cable Assembly
110
Erase Head Assembly
112
Power Supply PWA
117
Torque Motor Assembly
118
Torque Motor Brake Plate Assembly
119
Motion Direction Sensor PWA
120
Brake Plate Assembly
122
Bias Amplifier, Schematic Diagram
129
Squelch PWA
139
Record/Playback Control Panel Assembly
140
Record/Playback Equalization PWA
143
Record/Playback PWB Subassembly
145
Control Panel Harness
147
Squelch PWA
148
LAA 500 Line Amp PW a
163
Light Sensor Assembly
165
Manufacturers Code Numbers and Addresses
168
Tension Sensor PWA
172
Primary Power Supply
175
Table of Contents
177
Interconnection Diagram
178
Mounting Dimensions
178
Head Bridge Assembly
179
ILLUSTRATIONS (Continued)
179
Relay Control Chassis Interconnect
179
Tables
179
Transport Control Chassis Assembly
179
Electronics Assembly
183
Optional and Accessory Equipment
183
Specifications
183
Cabling Interconnections
184
General
184
Installation
184
Performance Checks
185
General
187
Operating Controls
187
Operation
187
Electronics Assembly
189
General
189
Theory of Operation
189
Power Supply
191
Capstan Motor Kit
207
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