TM &P TECHNICAL MANUAL

Transcription

1 TECHNICAL MANUAL OPERATOR S, ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LISTS FOR OSCILLOGRAPH RECORDER RO-460(V)1/U (HEWLETT-PACKARD MODEL 7702B) (NSN ) HEADQUARTERS, DEPARTMENT OF THE ARMY MAY 1979

2 This manual contains copyright material reproduced by permission of the Hewlett-Packard Company. TECHNICAL MANUAL } HEADQUARTERS DEPARTMENT OF THE ARMY No &P WASHINGTON, DC, 11 May 1979 OPERATOR S, ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LISTS FOR OSCILLOGRAPH RECORDER RO-460(V)1/U (HEWLETT-PACKARD MODEL 7702B) (NSN ) REPORTING OF ERRORS You can improve this manual by recommending improvements using DA Form located in the back of the manual. Simply tear out the self-addressed form, fill it out as shown on the sample, fold it where shown, and drop it in the mail. If there are no blank DA Forms in the back of your manual, use the standard DA Form 2028 (Recommended Changes to Publications and Blank Forms) and forward to the Commander, US Army Communications and Electronics Materiel Readiness Command, ATTN: DRSEL-ME-MQ, Fort Monmouth, NJ In either case a reply will be furnished direct to you. This manual is an authentication of the manufacturer s commercial literature which, through usage, has been found to cover the data required to operate and maintain this equipment. Since the manual was not prepared in accordance with military specifications, the format has not been structured to consider levels of maintenance. i

3 TABLE OF CONTENTS Section Page O INTRODUCTION 0-1 Section Page I. GENERAL INFORMATION IV. PRINCIPLES OF OPERATION Description Introduction Component Identification Basic Circuits Standard System Options Diodes Special Options Transistors Component Description Component Circuit Description Model 7702-OlA Recorder Preamplifiers Model A Driver Driver Amplifier Amplifier System Power Supply Preamplifiers, 8800 Series Recorder Description Model A Mobile Cart Chart Drive Components System Specifications Drive Motor and Speed... Reduction Gears II. INSTALLATION Push-button Actuated Clutch 2-1. Introduction Assemblies Initial Inspection Chart Drive Circuits Mechanical Inspection Stylus Heat Circuits Electrical Check Marker and Timer Circuit Claims and Repackaging Claims for Damage V. MAINTENANCE Repacking for Shipment Introduction or Storage Test Equipment Installation Performance Checks Environment General Rack Mounting Instructions Variable Line Voltage System in Portable Case Preventive Maintenance AC Power Requirements Mechanical Input Signal Connections Electrical Signal Input Connectors Cleaning Signal Input Cable Lubrication Input Connector Wiring for Brake and Drive Roll Non-Guarded Preamplifiers Maintenance Procedures Input Connector Wiring for Brake Roll Lubrication Guarded Preamplifiers Brake Roll Adjustment A Carrier Preamplifier Drive Roll Replacement Input Cables Paper Take-Up Maintenance Cable Assembly for use with... Procedures Sanborn Transducers Paper Take-Up Adjustment Instructions for Assembling Paper Take-Up Assembly Signal Input and Reference... Lubrication Cables Stylus Adjustments and Repairs A Phase Sensitive Demod Stylus Pressure ulator Signal Cables Stylus Mechanical Stop Signal Monitor Connections Stylus Mechanical Center Remote Recorder Operation (Zero) Remote Chart Drive Corrective Maintenance START-STOP control Disassembly of System Remote Marker Control Components Auxiliary Marker Operation Disassembly and Lubrication of Initial System Check Chart Drive Components To Check Recorder Drive Chart Drive Lubricants Functions Shaft Disassembly and To Check Recorder Marker... Lubrication and Timer Functions Shaft A Servicing Shaft B Servicing III. OPERATION Shaft C Servicing Introduction Shaft D Servicing Controls and Connectors Shaft E Servicing Operating Procedures Shaft F Servicing ii

4 TABLE OF CONTENTS (Cont.) Section...Page Section... Page V. MAINTENANCE (Cont.)... V. MAINTENANCE (Cont.) Drive Motor Sprocket and Troubleshooting Chain Lubrication Electrical Performance Check Gear Lubrication Mechanical Problems Results of Incorrect Lubrica Etched Circuit Board Repair tion Procedure Component Replacement Galvanometer Assembly VI. UPDATING SUPPLIES Galvanometer Magnet Replacement VII. MANUAL CHANGES Galvanometer Insert Replacement LIST OF ILLUSTRATIONS Figure...Page Figure... Page 1-1. Model 7702A Recording System and Unregulated ± 18 V Supply Option Unregulated ± 18 V Power Distribution Model lA Recorder Regulated ± 12 V Supply Model A Driver Amplifier Regulated ± 12 V Power Distribution Series Preamplifier (8801Ashown) Hz Plug-In Oscillator Block Diagram 1-5. Model A Mobile Cart With Associated Circuits A System Power Supply Hz Plug-In Oscillator Block... Diagram Slide Kit Chart Drive Motor and Speed 2-2. Portable Case Reduction Gears G3-34FW Connector First Speed Reduction Assembly 2-4. Cable Preparation Operation Input Connector Wiring, Non-Guarded Chart Drive Circuit Input Connector Wiring, Guarded Stylus Heat Control Circuit Y-Cable Sanborn No Marker and Timer Control Circuitry Remote Run Circuit Diagram Remote Marker Circuit Diagram Recorder Platen Writing Edge System Controls Stylus Adjustment Screws and Limits Brake Roll Adjusting Screw Location Typical 2-Channel Recording Brake Roll Removal Front Panel Controls Bearing Retainer and Gears Rear Panel Controls Paper Table Removal Permapaper Loading Procedures Paper Take-Up Adjustment System Operating Procedures Calibrating and Measuring Stylus 3-6. Remote System Operation Pressure Stylus Pressure Adjustment Heated Stylus Part No Model 7702A System Block Diagram Chart Drive Shafts Basic Diode Circuits Shaft A Lubrication Procedures Transistor Operation Clutch Sleeve Clearance Signal Distribution Diagram Shaft C Inspection Model A Driver Amplifier Excessive Wear in Clutch Assembly Block Diagram Checking Galvanometer Sensitivity Feedback Circuit - Simplified Schematic (a) Troubleshooting Chart 4-7. Galvanometer Frequency Response and... Problems in One Channel Transient Response (b) Troubleshooting Chart A System Frequency Response Problems in Both Channels iii

5 LIST OF ILLUSTRATIONS (Cont.) Illustrated Parts Breakdown Figure...Page Figure...Page 1. Two-Channel Thermal Recording Sub Power Supply Assembly, Top View System (Model 7702A)... 5 ( ) Two-Channel Thermal Recorder Power Supply Assembly, Bottom View 115/230V, 60Hz (Model A).. 7 ( ) Driver Amplifier Assembly Regulator Card and Bracket Assembly (Model A)... 9 ( A-C6) Printed Circuit Board Assembly Diode Board Assembly ( )...33 ( ) Oscillator Card Assembly, 2400 Hz 5. Amplifier Housing Assembly...13 ( A-C13) Galvanometer Assembly Complete Oscillator Card Assembly, 440 Hz ( Cl0)...15 ( A-C14) Front Panel, Door and Paper Take-Up Timer Assembly (14002S T - Assembly ( ) R V) Ten-Button Push Switch ( ) MM/Min Drive Motor Kit - 60:1 9. Paper Drive Assembly (table, brake... ( ) ( )...39 and associated parts) Mobile Cart ( A) Paper Drive Assembly (gear train and Portable Case ( A)...43 associated parts) A A Recorder Schematic Table, Drive Roll and Brake Assembly B. Model 7702A Power Supply Plug-In 12. Clutch Actuator Assembly ( ).. 25 Assemblies, Schematic Diagram...49 LIST OF TABLES Table...Page Table...Page 1-1. Model lA Specifications Recommended Test Equipment Model A Specifications Performance Checks Series Preamplifiers Recorder Minor Repairs and 1-4. System Specifications Adjustments System Accessories Timing Calibration Lubricants Speed Reduction Ratios Timer Assembly Part Numbers APPENDIXES A. ILLUSTRATED PARTS BREAKDOWN...A-1 B. REFERENCES...B-1 C. COMPONENTS OF END ITEM LIST (not applicable) D. ADDITIONAL AUTHDRIZATION LIST (not applicable) E. MAINTENANCE ALIOCATION...E-1 F. EXPENDABLE SUPPLIES AND MATERIALS LIST (not applicable) G. REPAIR PARTS AND SPECIAL TOOLS LISTS (PART NUMBER - NATIONAL STOCK NUMBER CROSS REFERENCE INDEX)...G-1 iv

6 Figure 1-1. Model 7702A Recording System and Option

7 0-1. SCOPE. This manual describes Oscillograph Recorder RO- 460(V)1/U and provides instructions for operation and maintenance. Throughout this manual, the RO-460(V) 1/U is referred to as Hewlett-Packard Model 7702B. Refer to Section VI for differences between the 7702A and 7702B INDEXES OF PUBLICATIONS. a. DA Pam Refer to the latest issue of DA Pam to determine whether there are new editions, changes, or additional publications pertaining to the equipment. b. DA Pam Refer to DA Pam to determine whether there are modification work orders (MWO s) pertaining to the equipment FORMS AND RECORDS. a. Reports of Maintenance and Unsatisfactory Equipment. Maintenance forms, records, and reports which are to be used by maintenance personnel at all maintenance levels are listed in and prescribed by TM b. Report of Packaging and Handling Deficiencies. Fill out and forward DD Form 6 (Packaging Improvement Report) as prescribed in AR /NAVSUPINST /AFR 71-13/MCO P A and DSAR SECTION O. INTRODUCTION c. Discrepancy in Shipment Report (DISREP) (SF 361). Fill out and forward Discrepancy in Shipment Report (DISREP) (SF 361) as prescribed in AR 55-38/- NAVSUPINST B/AFR 75-18/MCO P C and DLAR REPORTING EQUIPMENT IMPROVE- MENT RECOMMENDATIONS (EIR). EIR s will be prepared using Standard Form SF 368, Quality Deficiency Report. Instructions for preparing EIR s are provided in TM , The Army Maintenance Management System. EIR s should be mailed direct to Commander, US Army Communications and Electronics Materiel Readiness Command, ATTN: DRSEL-ME-MQ, Fort Monmouth, NJ A reply will be furnished directly to you ADMINISTRATIVE STORAGE. Administrative storage of equipment issued to and used by Army activities shall be in accordance with paragraph DESTRUCTION OF ARMY ELEC- RONICS MATERIEL. Destruction of Army electronics materiel to prevent enemy use shall be in accordance with TM