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Table of Contents
Model 1740A
List of Illustrations
TABLE
OF CONTENTS
(Cont'd)
Section
Page
Section
Page
5-50.
Trigger View Balance
8-14.
CRT Removal and Replacement.
8-2
Adjustment
...................
5-10
8-15.
HV Power Supply Assembly
5-51.
Delay Start Adjustment..........
5-11
Removal and Replacement ....
8-3
5-52.
Horizontal Amplifier Gain
8-16.
HV Multiplier Assembly
Adjustments ...................
5-11
Removal and Replacement ....
8-3
5-53.
X10 Amplifier Balance
8-17.
LV Power Supply Assembly
Adjustment ....................
5-11
Removal and Replacement ....
8-3
5-54,
Horizontal Linearity
8-18.
Gate Amplifier Assembly
Adjustment ....................
5-11
Removal and Replacement
....
8-4
5-55.
Preliminary Main Sweep
8-19.
Vertical Output Amplifier
Calibration ....................
5-12
Assembly Removal and
5-56.
Delayed Sweep Adjustment
......
5-12
Replacement ..................
8-4
5-57.
Main Sweep Fine Adjustment ....
5-12
8-21.
Vertical Preamplifier Assembly
5-58
Vertical Amplifier Balance
A3, Delay Line Assembly A4,
Adjustment ....................
5-13
and Vertical Control Switching
5-59.
Position and Sync Balance
Assembly A13 Removal and
Adjustment ....................
5-138
Replacement ..................
8-6
5-60.
Input Capacitance and Attenuator
8-25.
Horizontal Output Assembly
Compensation Adjustments ....
5-14
Removal and Replacement ....
8-7
5-61.
Vertical Gain Adjustment........
5-14
8-26.
Horizontal Sweep Assembly
5-62.
Pulse Response Adjustment ......
5-14
Removal and Replacement....
8-7
5-63.
X-Y Gain Adjustment ............
5-15
8-27.
Delayed Trigger Assembly
Removal and Replacement ....
8-7
VI
REPLACEABLE
PARTS
.................
6-1
8-28.
Circuit Board Repairs.............
8-7
6-1.
Introduction ...............00.000.
6-1
8-30.
Board Connections..............
8-7
6-3.
Ordering Information .............
6-1
8-31.
Soldering ....................00.
8-7
8-32.
Integrated Circuit
VII
MANUAL CHANGES
....................
7-1
Removal and Replacement ....
8-8
8-33.
Troubleshooting
..................
8-8
7-1.
Introduction ......................
7-1
8-36.
Initial Troubleshooting
7-3.
Manual Changes..................
7-1
Procedure...............000005
8-8
8-37.
De Voltages and Waveforms
....
8-8
VUI SCHEMATICS AND
8-38.
Trouble Diagnosis
.............. - 8-8
TROUBLESHOOTING
.................
8-1
8-39.
LV Power Supply ...............
8-9
8-41.
HV Power Supply...............
8-9
8-1.
Introduction ...................0..
8-1
8-47.
Gate Amplifier..................
8-9
8-3.
Preventive Maintenance
..........
8-1
8-48.
Vertical Section................
8-10
8-4,
Cleaning 62. ascii
hk ew ses
8-1
8-51.
Horizontal Output Amplifier ...
8-10
8-6.
Switch Maintenance ............
8-1
8-52.
Time Base ...............000005
8-10
8-12,
Removal and Replacement ........
8-2
LIST OF ILLUSTRATIONS
Figure
Title
Page
Figure
Title
Page
2-1.
Types of Power Source Receptacles
4-1.
Vertical and Horizontal Block Diagram
4-3
and Applicable Input Power Cable
4-2.
LVPS, HVPS, and Gate Amplifier
Part Numbers.....................00
2-1
Block Diagram.......................
4-4
2-2,
Line Voltage Selection
4-3.
Gate Schmitt Simplified Block Diagram
4-7
Switch Settings ......................
2-1
4-4,
Timing Relationship of the Gate
3-1.
Controls and Connectors...............
3-0
and Sweep Waveforms ...............
4-7
3-2.
Probe Compensation ...................
3-2
4-5.
Gate Control Simplified Block Diagram
4-8
3-3.
Normal Display.....................0..
3-3
3-4.
Magnified Display .....................
3-3
3-5.
Normal Display with Intensified Area..
3-3
5-1.
Bandwidth Test Setup .................
5-3
3-6.
Delayed Sweep Display ................
3-3
5-2.
CMRR Test Setup..................0005
5-3
3-7.
Normal! Display with Intensified Area..
3-4
5-3.
External Triggering Test Setup.........
5-4
3-8.
Mixed Sweep Display ..................
3-4
5-4,
Pulse Response Adjustments ..........
5-15
iv
mE Ja
, aR
7 — ot
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