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Section
Title
Page
V I
REPLACEABLE PARTS
6-1
6.
1
.
Introduction
6-1
6.
4
.
Ordering Information
6-3
6.
6
.
HP Part Number Organization
6-3
6
.
8
.
Component Parts and Materials
6-3
6.11
.
General Usage Parts
6-4
6.13
.
Specific Instrument Parts
6-4
6.15
.
Mechanical Parts
6-4
I
MANUAL CHANGES
7-1
7.
1
.
ntroduction
7-1
SERVICE
8-1
8.
1
.
Introduction
8-1
8
.
3
.
Safety Considerations
8-1
8.
9
.
Recommended Test Equipment
8-1
8.11
.
Logic Symbols
8-2
8.13
.
Logic Concepts
8-2
8.15
.
Negation
8-2
8.17
.
Logic Implementation and Polarity
8-3
8.26
.
Other Symbols
8-5
8.28
.
Dependency Notation "C" "G" "V"
8-6
8.30
.
Control Blocks
8-7
Complex Logic Devices
8-8
Troubleshooting (Failure Analysis)
8-9
Troubleshooting Flowchart
8-9
Major Test Point Signatues
8-9
Troubleshooting Signatures with SELF-TEST and NORMAL/
SERVICE Switches
8-9
Disassembly and Reassembly Procedures
8-14
Data Probe Disassembly and Reassembly
8-15
Gating Signals Pod Disassembly and Reassembly
8-15
Block Diagram Description
8-16
Clock. Start. and Stop Signal Paths
8-16
Oscillator (Internal Clock)
8-16
Self-Test
8-16
Display Scan and Comparator Strobe
8-18
Service (Troubleshooting) Mode
8-18
Power Supply
8-18
Circuit Theory (Principles of Operation)
8-18
Purpose of
8-18
Schematic Diagram
8-18
Gating Signals Pod
8-18
Edge Selection
8-18
ECL-to-TTL Level Converters
8-19
Gate Control
8-19
State Diagram
8-19
Data Signal Flow
8-19
Pseudo-Random Word Generator (Data
Signal Path Continued)
8-20
Display Control (Data Signal Path Continued)
8-21
Signature Comparator (UNSTABLE Signature Lamp)
8-21
Oscillator
8-21
Display Scan
8-21
Test Switch
8-21
Input Signal Timing
8-21
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