Tektronix 1725 User manual

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Instruction Manual
1725 (SN B040000 and Above)
PAL/NTSC Vectorscope
070-7635-04
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.

Copyright ETektronix, Inc., 1991, 1993, 1995. All rights reserved. Printed in
U.S.A. Tektronix products are covered by U.S. and foreign patents, issued and
pending.
Information in this publication supersedes that in all previously published
material. Specifications and price change privileges reserved. The following
are registered trademarks: TEKTRONIX and TEK.
For further information, contact: Tektronix, Inc., Corporate Offices, P.O. Box
1000, Wilsonville, OR 97070–1000, U.S.A. Phone: [phone]; TLX:
192825; TWX: (910) 467–8708; Cable: TEKWSGT.
Tektronix’ Television Division participates in the Broadcast Professionals
Forum (BPFORUM) on the CompuServeInformation Service. Press releases
on new products, product-specific newsletters, application information and
technical papers are among the types of information uploaded.
Additionally, product specialists from Tektronix will be “on line” to answer
questions regarding product applications, operation and maintenance.
Instructions for accessing the information on CompuServe can be found in the
current Tektronix Television Products Catalog.
CompuServe access is currently available in the U.S.A., Canada, Europe,
Japan, Australia, New Zealand, Argentina, Venezuela, Korea, and Taiwan.

WARRANTY
Tektronix warrants that this product, that it manufactures and sells, will be free from defects in materials
and workmanship for a period of three (3) years from the date of shipment. If any such product proves defec-
tive during this warranty period, Tektronix, at its option, either will repair the defective product without
charge for parts and labor, or will provide a replacement in exchange for the defective product.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expi-
ration of the warranty period and make suitable arrangements for the performance of service. Customer
shall be responsible for packaging and shipping the defective product to the service center designated by
Tektronix, with shipping charges prepaid. Tektronix shall pay for the return of the product to Customer if
the shipment is to a location within the country in which the Tektronix service center is located. Customer
shall be responsible for paying all shipping charges, duties, taxes, and any other charges for products re-
turned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inade-
quate maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to
repair damage resulting from attempts by personnel other than Tektronix representatives to install, repair
or service the product; b) to repair damage resulting from improper use or connection to incompatible
equipment; or c) to service a product that has been modified or integrated with other products when the
effect of such modification or integration increases the time or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU
OF ANY OTHER WARRANTIES, EXPRESSED OR IMPLIED. TEKTRONIX AND ITS VEN-
DORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR
A PARTICULAR PURPOSE. TEKTRONIX’ RESPONSIBILITY TO REPAIR OR REPLACE DE-
FECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUS-
TOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL NOT
BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAM-
AGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NO-
TICE OF THE POSSIBILITY OF SUCH DAMAGES.

1725 PAL/NTSC Vectorscope i
Table of Contents
Introduction
Section 1 Introduction 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Accessories (included with instrument) 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Optional Accessories (ordered separately) 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Field-Installable Upgrades 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Cord Options 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Information 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specification 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Instructions
Section 2 Operating Instructions 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front-Panel Controls and Indicators 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INPUT 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GAIN 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PHASE 2–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Miscellaneous 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear-panel Connectors 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BNC Connectors 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Subminiature D–Type Connectors 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Input 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Miscellaneous 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using The 1725 In Auxiliary Mode 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INPUT Switching 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REF Switching 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LINE SELECT 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STORE 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RECALL 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operator’s Checkout Procedure 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measurement Graticule 2–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measurement Applications 2–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Color Measurements 2–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Use of the Vector Graticule 2–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Measurement of Color Bars 2–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential Gain and Phase Measurements 2–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Matching Color Signals 2–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Looking at Incidental Carrier Phase Modulation 2–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
X Y Measurements 2–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents
ii 1725 PAL/NTSC Vectorscope
Installation
Section 3 Installation 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Packaging 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Installation 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Source 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mains Frequency and Voltage Ranges 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Options 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
X Y INPUT Connector 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AUXILIARY Connector 3–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mechanical Installation 3–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cabinetizing 3–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Securing the Instrument in its Cabinet 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rack Mounting 3–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Custom Installation 3–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theory of Operation
Section 4 Theory of Operation 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OVERVIEW 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BLOCK DIAGRAM 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Video Input 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Luminance Processing 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Microcontroller 4–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gain Cell 4–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chrominance Processing 4–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Demodulators 4–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Amplifiers 4–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CRT Blanking 4–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT DESCRIPTIONS 4–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagram 1 Input Amplifier 4–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Video Input Amplifiers 4–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gain Cell 4–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagram 2 Sync 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference Switch 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chrominance Amplifier 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Luminance Amplifier 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sync Separator 4–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bowes Oscillator 4–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Burst Gate Generator 4–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Detector 4–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents
1725 PAL/NTSC Vectorscope iii
Diagram 3 Subcarrier Regenerator 4–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±45°Phase Flipper 4–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loop Phase Detector and Amplifier 4–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Error Amplifier 4–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lock Detector and Amplifier 4–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Burst Detector 4–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAL Phase Initializer 4–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagram 4 VCXO, Phase Shift, and Auto Zero 4–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VCXO 4–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Phase Shift 4–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Auto Zero 4–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Post Regulators 4–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagram 5 Demodulator 4–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V Axis Switcher 4–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chrominance Demodulators 4–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Demodulator Output Filters and Amplifiers 4–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vector Center Dot Position Clamp 4–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vertical and Horizontal Standard Dot Generators 4–16. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagram 6 Deflection Amplifier 4–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
XY Input Amps 4–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deflection Amplifiers 4–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Center Dot Comparators 4–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CRT Blanking 4–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagram 7 Microcontroller 4–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Microprocessor 4–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagram 8 Control Circuit 4–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Z Axis Control 4–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Focus Control 4–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trace Rotation 4–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graticule Illumination 4–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switches 4–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controls 4–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indicators 4–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagram 9 Low Voltage Power Supply 4–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Line Rectifier and Filter 4–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pulse Width Modulator 4–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Filters 4–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Error Amplifier 4–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Feedback Transformer Driver and Peak Detector 4–25. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Under-Voltage Shutdown 4–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents
iv 1725 PAL/NTSC Vectorscope
Diagram 10 High Voltage Power Supply 4–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HV Osc and Error Amp 4–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply Outputs 4–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Focus Amplifier 4–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Grid Drive Circuit 4–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Z Axis Amplifier 4–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checks and Adjustments
Section 5 Checks and Adjustments 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Equipment List 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Instruments 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Auxilliary Equipment 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Check 5–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Short Form Performance Check 5–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long Form Performance Check 5–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustment Procedure 5–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Short Form Adjustment Procedure 5–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long Form Adjustment Procedure 5–28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance
Section 6 Maintenance 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preventive Maintenance 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Visual Inspection 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Static-Sensitive Components 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Checks and Readjustments 6–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 6–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foldout Pages 6–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Lists 6–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Major Assembly Interconnection 6–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Troubleshooting Techniques 6–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specific Troubleshooting Procedures 6–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply 6–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting Procedure 6–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction 6–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Volts Supply 6–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Volts Supply 6–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serial Port and LED Driver Diagnostics 6–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Corrective Maintenance 6–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Obtaining Replacement Parts 6–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents
1725 PAL/NTSC Vectorscope v
Mechanical Disassembly/Assembly 6–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bezel Removal 6–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graticule Light Removal and Replacement 6–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CRT Removal 6–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement of the CRT 6–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Rear Panel 6–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Front Panel Circuit Board 6–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Main Board 6–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing the Power Supply Board 6–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repackaging 6–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identification Tag 6–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repackaging for Shipment 6–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options
Section 7 Options 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cabinets 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Plain Cabinet (1700F00) 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Carrying Case (1700F02) 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Side-by-Side Rack Adapter (1700F05) 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ordering 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replaceable Electrical Parts
Section 8 Replaceable Electrical Parts 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Ordering Information 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Replaceable Electrical Parts List 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Column Descriptions 8–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cross Index–Mfr. Code Number to Manufacturer 8–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replaceable Electrical Parts 8–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagrams/Circuit Board Illustrations
Section 9 Diagrams/Circuit Board Illustrations 9–1. . . . . . . . . . . . . . . . . . . . . . . . . . .
Replaceable Mechanical Parts
Section 10 Replaceable Mechanical Parts 10–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Ordering Information 10–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Replaceable Mechanical Parts List 10–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Column Descriptions 10–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cross Index–Mfr. Code Number to Manufacturer 10–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replaceable Electrical Parts 10–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents
vi 1725 PAL/NTSC Vectorscope
List of Figures
Figure 2–1: 1725 front panel controls and indicators 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–2: 1725 rear panel 2–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–3: Initial equipment connections for operators checkout procedure 2–10. . . . . . . . . . . . . . . . . . . . .
Figure 2–4: Typical 1725 vector display 2–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–5: Modulated staircase waveform shown on a 1725 2–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–6: 1725 test circle display 2–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–7: 1725 PAL/NTSC Vectorscope graticule 2–15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–8: NTSC standard color phase Vector diagram 2–16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–9: PAL standard color phase Vector target 2–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–10: NTSC and PAL 75% and 100% burst targets on 1725 graticule 2–17. . . . . . . . . . . . . . . . . . . .
Figure 2–11: Fine detail of the 1725 graticule magenta target 2–19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 2–12: Relationship of I and Q modulation amplitudes to vector targets 2–20. . . . . . . . . . . . . . . . . . .
Figure 2–13: Relationship of U and V modulation amplitudes to vector targets 2–20. . . . . . . . . . . . . . . . . . .
Figure 2–14: Differential phase and gain scales showing simulated 10°differential phase 2–21. . . . . . . . . .
Figure 2–15: Measuring stereo audio phase difference in X and Y axes 2–23. . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–1: Jumper locations on the Main board 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–2: REMOTE connector pin functions 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–3: AUXILIARY connector pin functions 3–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–4: Dimensions of the 1700F00 plain cabinet. 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–5: 1700F02 portable cabinet 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–6: Rear view of the instrument, with the securing screws identified 3–7. . . . . . . . . . . . . . . . . . . .
Figure 3–7: The 1700F05 side-by-side rack adapter 3–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–8: A 1700–Series instrument mounted in a 1700F05 cabinet with a blank front panel (1700F06)
covering the unused side of the cabinet 3–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–9: A 1700F05 side-by-side rack mounting cabinet with an instrument and a 1700F07 utility
drawer 3–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 3–10: Considerations for custom installation of an instrument 3–10. . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–1: Simple block diagram of a vectorscope 4–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–2: Block diagram of the Phase Locked Loop 4–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–3: Dot timing signals for U6 4–18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4–4: Pinout of the CRT Socket 4–27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–1: XY Input test connector 5–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–2: Initial equipment connections for performance checks 5–9. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents
1725 PAL/NTSC Vectorscope vii
Figure 5–3: Equipment connections to check synchronization 5–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–4: Initial connections for checking bandwidth 5–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–5: Perimeter of the sine wave circle just touches –3 dB point gaps 5–12. . . . . . . . . . . . . . . . . . . . .
Figure 5–6: Equipment connections to check decoding accuracy 5–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–7: Signal connection for checking CH–A/CH–B phase matching. 5–16. . . . . . . . . . . . . . . . . . . . . .
Figure 5–8: Equipment connections for checking burst jitter 5–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–9: X Y INPUT connector pin functions. 5–20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–10: Audio frequency XY display. 5–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–11: Initial equipment setup for return loss. 5–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–12: Measuring return loss of 1725 CH–A input. 5–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–13: Adjustment and test point locations for the 1725 Vectorscope 5–28. . . . . . . . . . . . . . . . . . . . . .
Figure 5–14: Initial equipment connections for the adjustment procedure 5–29. . . . . . . . . . . . . . . . . . . . . . .
Figure 5–15: X Y INPUT connector pin functions. 5–31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–16: Equipment connections for CH–A/CH–B phase match adjustment 5–33. . . . . . . . . . . . . . . . . .
Figure 5–17: Audio frequency XY display. 5–34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 5–18: Adjustment point for auto phase lock 5–37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–1: Circuit board assembly locations 6–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–2: Multiple pin connectors used in the 1725 Vectorscope 6–6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–3: Screws that need to be removed to remove the bezel. 6–17. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–4: Screws that need to be removed to remove the rear panel 6–19. . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–5: Screws that hold the Front Panel circuit board (A2) in place. 6–20. . . . . . . . . . . . . . . . . . . . . . .
Figure 6–6: Screws holding the main circuit board (A3) in place. 6–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–7: Screws holding the Power Supply circuit board (A1) in place 6–22. . . . . . . . . . . . . . . . . . . . . . .
Figure 6–8: Screws holding the Control board (A4) in place 6–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 6–9: Repackaging 6–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents
viii 1725 PAL/NTSC Vectorscope
List of Tables
Table 1–1: Signal and External Reference Inputs 1–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–2: Vector Mode 1–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–3: X Y Mode 1–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–4: CRT Display 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–5: Power Source 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–6: Environmental Characteristics 1–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–7: Certification 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 1–8: Physical Characteristics 1–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–1: Internal Jumper Selection 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 3–2: AUXILIARY Connector Pin Assignments 3–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 5–1: Preliminary Control Settings 5–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 5–2: Preliminary Control Settings 5–29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 6–1: Static Susceptibility 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 6–2: Power Supply Fault Symptoms 6–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 6–3: Low Volts Supply Voltages 6–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 6–4: Control Circuit Test Points 6–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 6–5: High Volts Supply Fault Symptoms 6–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table 6–6: High Voltage Oscillator Test Points 6–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1725 PAL/NTSC Vectorscope ix
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it. To avoid potential hazards, use this
product only as specified.
Only qualified personnel should perform service procedures.
Use Proper Power Cord. Use only the power cord specified for this product and
certified for the country of use.
Connect and Disconnect Properly. Do not connect or disconnect probes or test
leads while they are connected to a voltage source.
Ground the Product. This product is grounded through the grounding conductor
of the power cord. To avoid electric shock, the grounding conductor must be
connected to earth ground. Before making connections to the input or output
terminals of the product, ensure that the product is properly grounded.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings
and markings on the product. Consult the product manual for further ratings
information before making connections to the product.
Do not apply a potential to any terminal, including the common terminal, that
exceeds the maximum rating of that terminal.
Do Not Operate Without Covers. Do not operate this product with covers or panels
removed.
Use Proper Fuse. Use only the fuse type and rating specified for this product.
Avoid Exposed Circuitry. Do not touch exposed connections and components
when power is present.
Do Not Operate With SuspectedFailures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
Do Not Operate in Wet/DampConditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
Provide Proper Ventilation. Refer to the manual’s installation instructions for
details on installing the product so it has proper ventilation.
Terms in this Manual. These terms may appear in this manual:
To Avoid Fire or
Personal Injury
Symbols and Terms

General Safety Summary
x1725 PAL/NTSC Vectorscope
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
Terms on the Product. These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the
marking.
WARNING indicates an injury hazard not immediately accessible as you read the
marking.
CAUTION indicates a hazard to property including the product.
Symbols on the Product. The following symbols may appear on the product:
CAUTION
Refer to Manual WARNING High Voltage Double
Insulated ProtectiveGround
(Earth) Terminal Not suitable for
connectionto
thepublic telecom-
municationsnetwork

1725 PAL/NTSC Vectorscope xi
Service Safety Summary
Only qualified personnel should perform service procedures. Read this Service
Safety Summary and the General Safety Summary before performing any service
procedures.
Do Not Service Alone. Do not perform internal service or adjustments of this
product unless another person capable of rendering first aid and resuscitation is
present.
Disconnect Power. To avoid electric shock, switch off the instrument power, then
disconnect the power cord from the mains power.
Use Caution When Servicing the CRT. To avoid electric shock or injury, use
extreme caution when handling the CRT. Only qualified personnel familiar with
CRT servicing procedures and precautions should remove or install the CRT.
CRTs retain hazardous voltages for long periods of time after power is turned off.
Before attempting any servicing, discharge the CRT by shorting the anode to
chassis ground. When discharging the CRT, connect the discharge path to ground
and then the anode. Rough handling may cause the CRT to implode. Do not nick
or scratch the glass or subject it to undue pressure when removing or installing it.
When handling the CRT, wear safety goggles and heavy gloves for protection.
Use Care When Servicing With Power On. Dangerous voltages or currents may
exist in this product. Disconnect power, remove battery (if applicable), and
disconnect test leads before removing protective panels, soldering, or replacing
components.
To avoid electric shock, do not touch exposed connections.
X-Radiation. To avoid x-radiation exposure, do not modify or otherwise alter the
high-voltage circuitry or the CRT enclosure. X-ray emissions generated within
this product have been sufficiently shielded.

Service Safety Summary
xii 1725 PAL/NTSC Vectorscope

1725 PAL/NTSC Vectorscope xiii
Preface
The information in this manual is intended for instrument operators and service
technicians. Operators are assumed to be familiar with basic television terms
and measurements. Qualified service technicians are also assumed to be familiar
with television terms and measurements, and have moderate experience with
analog and logic circuits.
The manual is divided into two parts: Operator’s Information and Service
Information. The Operator’s Information is useful to both operators and service
technicians. The Service Information is intended only for qualified service
technicians.
Section 1, Introduction, includes a general description of the instrument followed
by the Specifications. The Specifications include references to the correspond-
ing Performance check steps.
Section 2, Operating Instructions, familiarizes the user with the front- and
rear-panel controls, connectors, and indicators; includes an operator’s check-out
procedure; and includes other operator familiarization information.
Section 3, Installation, includes electrical and mechanical installation informa-
tion. The electrical installation information includes adjustments and operational
changes available with the instrument. The mechanical installation information
includes rackmounting, custom installation, and portable use.
Section 4, Theory of Operation, provides an over-all block diagram description and
detailed circuit descriptions. Read the block diagram description for an overview of the
instrument. The detailed circuit descriptions should be used with the block diagram and
schematic diagrams in the foldout pages for specific information about individual
circuits.
Section 5, Checks and Adjustments, includes the Performance Check Procedure and the
Adjustment Procedure. The Performance Check Procedure is used to verify that the
instrument’s performance is within its specifications, and the Adjustment Procedure is
used to adjust the instrument to meet its specifications. The procedures are preceded by
a list of recommended test equipment. Each procedure has a short form listing of the
individual steps.
Section 6, Maintenance, includes preventive, troubleshooting, and corrective
information.
Section 1, Introduction
Section 2, Operating
Instructions
Section 3, Installation
Section 4, Theory of
Operation
Section 5, Checks and
Adjustments
Section 6, Maintenance

Preface
xiv 1725 PAL/NTSC Vectorscope
Section 7, Options, documents instrument options. The information in this
section summarizes the options. Additional details are included in appropriate
places throughout the manual.
Section 8, Replaceable Electrical Parts, includes order information and part
numbers for all replaceable electrical parts.
Section 9, Diagrams, contains servicing illustrations. These include adjustment
locations, circuit board part locations, a block diagram, and schematic diagrams.
Parts locating tables are included that cross-reference the circuit board illustra-
tions to the schematic diagrams.
Section 10, Replaceable Mechanical Parts, includes ordering information and
part numbers for all replaceable mechanical parts. This parts list is referenced to
an exploded view mechanical drawing. Also included are lists of accessories and
optional accessories.
Section 7, Options
Section 8, Replaceable
Electrical Parts
Section 9, Diagrams
Section 10, Replaceable
Mechanical Parts

Introduction