Main
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EC Declaration of Conformity
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Table of Contents
Specifications Operating Information
Theory of Operation
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Adjustment
Maintenance
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To Avoid Fire or Personal Injury
Symbols and Terms
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Specifications
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Power Cord Information
Operating Temperature
Ventilation Requirements
Memory Backup Power
Operating Environment
Packaging for Shipment
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System Functional Overview
Executive Processor Block
Memory Management Unit Block
Waveform Memory Block
Front Panel Controls
I/O Block Waveform Compressor and Display Control Block
Block Diagram Descriptions
Data Buffers
Address Latch
Function Decoder
Internal Clock Rate Generator
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Microprocessor
RAM/ROM Memory
Trigger
A5 Time Base/Controller Board
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Memory Management Unit (MMU) Interface
A7 CRT Socket Board
Red, Green, and Blue Video Amplifiers
Red, Green, and Blue Adjustments
Convergence Adjustment
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Degauss
A9, A10, and A11 Front Panel Boards
A9 TouchPanel Assembly
A10 Front Panel Control Board
A11 Front Panel Button Board
GPIB Data and Address Bus
A12 Rear Panel Assembly
Standard RS232C Controller
Printer Port
I/O Data Buffer
A13 Mother Board
A14 Input/Output (I/O) Board
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MMU IC
Waveform RAM
Display Interface
A15 Memory Management Unit (MMU) Board
Time Base/Controller Interface
Executive Processor (EXP) Interface
Display IC
Microprocessor
Bit Map RAM
A17 Executive Processor Board
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A18 Memory Board
Address Latches
Address Decode and Memory Select
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Timing and Sampling Head Control
Shared RAM
Time Base/Controller Interface
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Performance Verification
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TestEquipment
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Sweep Rate Accuracy
Internal Clock
Calibrator Output
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Setup to Invoke PowerOn Diagnostics
Procedure to Invoke PowerOn Diagnostics
PowerOn Diagnostics
Diagnostics
SelfTestDiagnostics
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Setup to Invoke Extended Diagnostics
Procedure to Invoke Extended Diagnostics
Extended Diagnostics
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Setup to Check Vertical Reference Voltage
Procedure to Check Vertical Reference Voltage
Vertical Reference Voltage
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Setup to Check Horizontal Reference Clock
Procedure to Check Horizontal Reference Clock
Horizontal Reference Clock
Performance Tests
424
Performance Verification
Figure 42:A5 Time Base/Controller Board TestPoint Locations
Pin 1 Pin 9 U191
Vertical Accuracy
Setup to Check Vertical Gain
Procedure to Check Vertical Gain
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Setup to Examine Vertical RMS Noise
Procedure to Examine Vertical RMS Noise
System Vertical RMS Noise
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Sweep Rate Accuracy 2 ns/div
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Sweep Rate Accuracy 1 ps/div
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Setup to Check Triggering
Procedure to Check Triggering
Triggering, External Direct
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Prescaler Triggering
Setup to Check Prescaler Triggering
Procedure to Check Prescaler Triggering
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Internal Clock
Setup to Examine Internal Clock
Procedure to Examine Internal Clock
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Calibrator Output
Setup to Examine Calibrator
Procedure to Examine Calibrator
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TestEquipment
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Power Supply
Setup to Examine Voltage Supply
Procedure to Examine Voltage Supply
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Setup to Examine/Adjust Voltage Reference
Procedure to Examine/Adjust Voltage Reference
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Setup to Examine/Adjust Regulator Reference
Procedure to Examine/Adjust Regulator Reference
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Setup to Examine/Adjust the Display
Procedure to Examine/Adjust the Display
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Adjustments
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Figure 54:A8 CRT Driver Board Adjustment Locations
Adjustment Procedures
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Real Time Clock
Setup to Examine/Adjust Real Time Clock
Procedure to Examine/Adjust Real Time Clock
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Removing and Replacing FRUs
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Electrical LockOn of the Front Panel ON/STANDBY Power Switch
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Figure 61:Field Replaceable Unit (FRU) Locator (Cont.)
CSA 803C Service Manual 615
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Fan Motor Removal/
Cathode Ray Tube (CRT) Removal/
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624
Figure 65:Removing/Replacing the Cathode Ray Tube
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Acquisition Unit Removal/
Emergency and First Aid Information
630
A1 M/F Strobe Drive Board
A3 M/F Power Connect Board
A4 Regulator Board
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A5 Time Base/Controller Board A6 Calibrator Board
636
Battery (U511 RAM Socket)
Figure 610:Removing/Replacing the A5 Time Base/Controller and A6 Calibrator Boards
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A9 TouchPanel Assembly
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A11 Front Panel Button Board
A12 Rear Panel Assembly
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A13 Mother Board
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A15 Memory Management Unit (MMU) Board
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A17 Executive Processor (EXP) Board
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A18 Memory Board
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A20/A21 Head Interconnect (Power Only) and A22/A23 Head lnterconnect Boards
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Figure 625:Removing/Replacing the Front Subpanel Assembly
CSA 803C Service Manual 661
A26 M/F Acquisition lnterconnect Board
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A27 Acquisition Analog Board
A28 Acquisition MPU Board
FRU IC Removal
Serial Data Interface Integrated Circuits (SlamPack" ICs)
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Firmware Integrated Circuits (Dual InLine Package" ICs)
Firmware Upgrade Procedure
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674
Figure 632:MultiPin Connector Orientation and Semiconductor Indexing Diagram
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Checks After FRU
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Diagnostic Menus
Diagnostic Menu Hardcopy
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Battery Testing
FRU Name Abbreviations
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Display Subsystem Error Index Codes
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ST1(LSB) ST2 ST3 ST4(MSB) ST5(Test Running) ST6(TestFailed) StatusLEDs
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Other Troubleshooting
Module Troubleshooting
A4 Regulator Board
Power Supply Module
Module Troubleshooting
CRT,A7 CRT Socket Board, or A8 CRT Driver Board
A13 Mother Board
Fuse Testing
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Time Base Calibration Errors
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Acquisition Calibration Errors
Options
Instrument Options
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CSA 8,3C Service Manual
2
Figure 93:A4 Regulator Board Block Diagram
Figure 94:A5 Time Base'Controller Board Block Diagram
Figure 95:A7 CRT Socket Board Block Diagram
CSA 803C Service Manual 3
Figure 96:A8 CRT Driver Board Block Diagram
Figure 97:A12 Rear Panel Assembly Block Diagram
CSA 8,3C Service Manual
4
Figure 98:A.4 I'O Board Block Diagram
Figure 9.,:A.7 Executive Processor Board Block Diagram
Figure 99:A.5 MMU Board Block Diagram
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CSA 803C Service Manual
6
Figure 914:A27 Acquisition Analog Board Block Diagram
Figure 915:A28 Acquisition MPU Board Block Diagram
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Item Names
Using the Replaceable Parts List
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CSA 803C Service Manual 105
CROSS INDEX - MFR. CODE NUMBER TO MANUFACTURER
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A9
CSA 803C Service Manual 109
A11
Figure 102:Front Panel
1010
A10
CSA 803C Service Manual 1011
A12
Figure 103:Chassis, Rear
A7
1012
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1014
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CSA 803C Service Manual 1015
1016
A28 A27
Figure 105:Acquisition Module
A19
A20 A21 A22 A23 A26
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1018
A2
Figure 106:Power Supply
CSA 803C Service Manual 1019
