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Manuals
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HP Manuals
Recording Equipment
7414A
Operating and service manual
HP 7414A Operating And Service Manual
Thermal-tip recorder
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Contents
Table of Contents
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Table of Contents
Table of Contents
Applications and Specifications
Four-Channel Recorder
Section I, General Information
Model 7414A Recording System
Accessories
Section II, Installation
Initial Inspection
Mechanical Check
Performance Tests
Damage Claims
Storage
Installation
Preamplifier Installation
Power Connections
Remote Control and Marker Connections
Signal Connections
Tape System Connections
Section III, Operation
Galvanometer Position Feedback
Section IV, Principles of Operation
Stylus Linkage
Galvanometer Damping
Heat Control Circuit
Power Control Circuits
Preamplifier Power Supply Circuits
Oscillator
Recorder Signal Circuits
Galvanometer Position Feedback Circuit
Galvanometer Damping
Chart Drive
Chart Motor
Speed Control
Chart Drive Gears
Paper Feed
Recorder Power Supply and Regulator Circuits
Recorder DC Power Supplies
Paper Feed Path
Recorder Power Supply and Regulator Circuits, Simplified Circuit
Regulator/Oscillator
Marker Circuits
440 Hz Oscillator
2400 Hz Oscillator Circuit
Section V, Maintenance
Test Equipment and Lubricants
Performance Checks
Recommended Test Equipment
Variable Line Voltage
Preventive Maintenance
Operational Checks and Inspection
Lubricants and Solvents Required
Test and Adjustment Points
Electrical Performance Checks and Adjustments
Cleaning
Lubrication
Electrical Checks
Adjustments and Minor Repairs
Paper Drive Adjustments
Test Cable, Plug and Fixtures
Driver Amplifier and Regulator/Oscillator Test
Stylus Adjustments
Regulator/Oscillator Board Test Points
Driver Amplifier Board Test Points
Paper Brake Felt Cover Removal and Replacement
Stylus Adjustments
Corrective Maintenance
Galvanometer Removal and Replacement
Drive Unit Removal and Replacement
Channel Time Synchronization Adjustment
Gearbox Removal
Paper Table Removal
Stylus Removal and Replacement
Drive Unit Removal
Paper Table Disassembly for Drive
Gearbox Removal and Overhaul
Drive Roller and Table Link Removal (Part 1)
Drive Roller and Table Link Removal (Part 2)
Gearbox Inspection and Solenoid Adjustment
Gearbox Shaft End Play Adjustment
Spring Clutch Lubrication (Primary Shaft)
Overriding Clutch Lubrication (Secondary Shaft)
Gearbox Input Chain Tension Adjustment
Solenoid Adjustment
Marker Assembly Maintenance ·5-34
Marker Assembly Adjustment and Removal
Section VI, Recplaceable Parts
Reference Designations
Ordering Information
Locations
Driver Amplifier
Replaceable Parts
Table
Code List of Manufacturers
Control Panel A2 (07754-60240) Subassemblies
Control Panel A2 Schematic Diagram
Control Switch Board A2A
Heat Potentiometer Board A2A2
Preamplifier Power Supply Board A2A3
Power Supply A3
Power Supply A3, Schematic Diagram
Schematic Diagram
Driver Amplifier
Component Location
Regulator/Oscillator A8 (60 Hz, 07754-60180)
Drive Unit AI0 (07754-60250) Subassemblies, Parts Location Diagram
Parts Location Diagram
Parts Location Diagram
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