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Philips Manuals
Measuring Instruments
SCOPEMETER PM93
Service manual
Philips SCOPEMETER PM93 Service Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Caution and Warning Statements
Symbols
Safety Instructions
Safety Precautions
Introduction
Impaired Safety
General Safety Information
Characteristics
Display
Signal Acquisition
Channels a & B
Timebase
Trigger
Signal Memory (Models 95 and 97 Only)
Trace Display
Setup Memory (Model 95 Only)
Setup Memory (Model 97 Only)
Calculation Facilities (Model 95 Only)
Calculation Facilities (Model 97 Only)
Cursors (Models 95 and 97 Only)
Multimeter
Auto Setting
Generator (Model 93 and 95)
Generator (Model 97 Only)
Power Adaptor Ibattery Charger
Power Supply
Mechanical
Environmental
Interface (Model 97 Only)
Safety
Accessories
Service and Maintenance
Location of Electrical Parts
Circuit Descriptions
General
Introduction to Circuit Description
Functional Block Description
Introduction
Data Acquisition
Digital Circuits (A1)
Introduction
Overview Digital Circuits
MICROPROCESSOR Circuitry (Ilp)
DIGITAL ASIC (D-ASIC) Circuitry
LCD Circuitry
Analog Circuits (A2)
Introduction
Overview Analog Circuits
ATTENUATOR Sections, CHANNEL a and B
EXTERNAL (BANANA) INPUT/OUTPUT Circuitry
ANALOG ASIC (A-ASIC) and ADC Circuitry
Analog Control Circuit
GENERATOR Circuit
Battery Charger
Power Supply
Performance Verification Procedure
General Information
Standard Performance Verification Procedure
STANDARD PERFORMANCE VERIFICATION PROCEDURE Summary
Additional Performance Verification Procedure
Calibration Adjustment Procedure
General Information
Recommended Calibration Adjustment Equipment
Entering the Calibration Procedure
Operating the Calibration Procedure
Hardware SCOPE Calibration Adjustments
Scope Calibration Adjustment Procedure
Contrast Calibration Adjustment Procedure
Closed Case SCOPE Calibration Adjustments
Meter Calibration Adjustment Procedure
Calibration Adjustment Procedure Summary
Disassembling the Scopemeter
General Information
Disassembly Procedures
Removing the Battery Pack
Removing the Analog A2 PCB, to Enable Hardware SCOPE Calibration Adjustments
Removing the Digital a 1 PCB
Corrective Maintenance
Diagnostic Testing and Troubleshooting
Introduction
Troubleshooting Techniques
Display and Error Messages
Operation Verification Procedure
Main Tests
Performance Verification Procedure
Troubleshooting
Trouble Shooting Hints
Digital A1 PCB Troubleshooting
Powering the Scopemeter
Kernel Test
Test Point Signals
Default Signals Measured in the Digital Circuits
Soft-2
Analog A2 PCB Troubleshooting
Test Point Signals
Default Signals Measured on the Analog A2 Pcb
Replacements
Special Parts
Standard Parts
Static-Sensitive Components
Transistors and Integrated Circuits
Replacement of Parts
Replacing Parts in the Battery Compartment
Replacing Parts on Front Cover
Replacing Parts on Bottom Cover
30-Pole Flat Cable Replacement
Stand Replacement
Input Unit Assembly Replacement
Top Cover Assembly Replacement
Keypad Replacement
Liquid Crystal Display (LCD), Contact Strips and Backlight Foil (Model 97 Only) Replacement
General Soldering Techniques
Soldering Micro-Miniature Semiconductors
Soldering Techniques
Extender Flat Cable
Instrument Repacking
Recalibration after Repair
Special Tools
Maintenance of the Primary Circuit (Pm89071
Replaceable Parts List
Circuit Diagrams
Soft-2
A Ac/DC
Autoset
B MV
CHAN-Alb
Cursor 2 R
Down
Math
Meter
Trigger
Waveform
Digital Board a 1 Revision Level Overview
Hardware Modifications, Pcb Revision Levels
Modifications
Analog Board A2 Revision Level Overview
Firmware Modifications
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Table of
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Chapters
Table of Contents
4
Soft-2
156
Table of Contents
Troubleshooting
CORRECTIVE MAINTENANCE
130
Performance Verification Procedure
136
Analog A2 PCB Troubleshooting
157
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This manual is also suitable for:
Scopemeter pm95
Scopemeter pm97
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