Tektronix 606B User manual

SERVICE MANUAL
Tektronix, Inc.
P.O. Box 500
Beaverton, Oregon 97077
MANUAL PART NO.
070-2821 -00 First Printing SEP 1979
Revised JAN 1981

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This equipment generates, uses,., arid pan radiate radio frequency
•energy and. may .cause ''radio communications if not
installed-ahd used in •.ao^rcjaH^.(%i% 'the instruction manual. It
has- •.been1-tested' and .found to^oftligfe’^ the limits for Class B
computing, devices pursuant to Su'dpart,J-of Part 15 of FCC Rules,
:"whicii 'are ;'designed. to provide .realgnable protection against such
•v'interference when this- equipfnfrtt :'ia^P.?rated in acommercial
environment';' Operation.' in aresidential; area is likely to cause
interference. ,in -which case the users ,at .their own expense must
1take. whatever measures may: be required to correct the
interference;; ;.
hCopyright ®1979 Tektronix;' Hhd/ Ail rights reserved.
Contents of this publication maynot be reproduced in any
•- 'form without the written p£.Mj§&ion of Tektronix, Inc.
-Product^ of -Tektronix, Inc. and its subsidiaries are
covered by U..S. and forfign patents and/or pending
patents:- «
'':T•
TEKTRONIX, TEK, SCOPE-MOBILE, and Ht are reg-
istered trademarks of Tektfnnix, Inc/TELEQUIPMENT is
aregistered traiderhar^^;,j^^|ktrdi^x-U. K. Limited.
Printed in U.S.A. ^Specification and price change
privileges are reserved.

6068 Service
PAGE
LIST OF ILLUSTRATIONS jjj DYNAMIC FOCUS
LIST OF TABLES iii XABSOLUTE VALUE AMPLIFIER
SAFETY SUMMARY : . .riv "YABSOLUTE VALUE AMPLIFIER
STIGMATOR 1CORRECTION SHAPER
SECTION 1-GENERAL INFORMATION
OPERATORS MANUAL
SERVICE MANUAL
INSTRUMENT DESCRIPTION
INSTALLATION
INITIAL INSPECTION
OPERATING POWER INFORMATION ...
INSTALLATION IN PATIENT-CARE FACILITIES
INPUT ATTENUATION ,r.:
.
INPUT IMPEDANCE
RACKMOUNTING INFORMATION ’/.
CABINET-TO-RACKMOUNT CONVERSION..
.
RACKMOUNT-TO-CABINET CONVERSION,,. .
.
SLIDE-OUT TRACKS .
REMOVING OR INSTALLING THE
INSTRUMENT
SLIDE-OUT TRACK LUBRICATION ..........
INSTRUMENT PACKAGING .
.
SPECIFICATION
STANDARD ACCESSORIES
SECTION 2-OPERATING INFORMATION
AMBIENT TEMPERATURE CONSIDERATIONS ..
.
CONTROLS AND CONNECTORS
DETAILED OPERATING INFORMATION ../..V'..
SIGNAL CONNECTORS ,
INPUT SIGNAL REQUIREMENTS ..
CHECKOUT PROCEDURE .
TEST EQUIPMENT REQUIRED
PRELIMINARY SET UP
DISPLAY FUNCTIONS I'.),.'..?;
DEFLECTION AND Z-AXIS FUNCTIONS.;..'.'.
SECTION 3-THEORY OF OPERATION
BLOCK DIAGRAM
DETAILED CIRCUIT OPERATION
HORIZONTAL (X) AMPLIFIER
XINPUTS
XPREAMPLIFIER
SCAN LIMITER
XFOCUS-CORRECTION PICKOFF
XOUTPUT AMPLIFIER
VERTICAL (Y) AMPLIFIER
YINPUTS
YPREAMPLIFIER
SCAN LIMITER
YFOCUS-CORRECTION PICKOFF
YOUTPUT AMPLIFIER
Z-AXIS AMPLIFIER
ZINPUTS
ZPREAMPLIFIER
LIMITER
ZFOCUS-CORRECTION PICKOFF
ZOUTPUT AMPLIFIER
TTL BLANKING
.»»
.Y-1
•fc.
e/>i
•&V.
.*:v. i..;2 v;
1-2 'Y'VV.'
1-3
:. ’. pc1-^C V
v. ..;t4 ->5;S
.-s .. lc-5 ‘s
.... 1-5
....1-5
.... 1-5
.... 1-?
.:*A- V2W
2-1 '
2-1'
2-r
2rl;V *;v
2~4W'iM
2-4
STIGMATOR 1OUTPUT AMPLIFIER AND
;LEVEL SHIFTER
REMOTE DEFOCUS
^STIGMATOR 2CORRECTION SHAPER
.:• AND MIXER :
STIGMATOR 2OUTPUT AMPLIFIER AND
LEVEbSHIFTER
FOCUS .CORRECTION SHAPER AND MIXER
ZFOCUS
-FOCUS OUTPUT AMPLIFIER
CONVERTER AND HIGH-VOLTAGE
POWER SUPPLY... AY
>• CONVERTER OSCILLATOR
-ERROR AMPLIFIER :P.'
CURRENT LIMITER -”
CONVERTER BASE DRIVE
CONVERTER OUTPUT
DEFLECTION VOLTAGE SUPPLIES
H. V. REGULATOR
CONTROL-GRID DC RESTORER
FOCUS-ELEMENT DC RESTORER
LOW-VOLTAGE POWER SUPPLY
POWER INPUT '
RECTIFIER AND FILTER ;
+18 VOLT UNREGULATED SUPPLY
-18 VOLT UNREGULATED SUPPLY
.+1 5VOLT REGULATED SUPPLY
-15 VOLT REGULATED SUPPLY
INTERCONNECTIONS’.
3-1
3-1
3-1
3-1
3-3
3-3
3-3
3-3
3-4
3-4
3-4
3-4
3-4
3-4
3-5
3-5
3-5
3-5
3-5
3-5
3-5
,} Section 4-maintenance ,
.
PREVENTIVE MAINTENANCE
'•'-VISUAL INSPECTION
-i/C '.CLEANING.
EXTERIOR 4
CRT
INTERIOR
SEMICONDUCTOR CHECKS
PERIODIC ELECTRICAL ADJUSTMENT
TROUBLESHOOTING
TROUBLESHOOTING AIDS. .
DIAGRAMS '
CIRCUIT BOARD ILLUSTRATIONS
TROUBLESHOOTING CHART
TEST POINT AND ADJUSTMENT
LOCATIONS
COMPONENT COLOR CODING
SEMICONDUCTOR LEAD CONFIGURATIONS
MULTI-PIN CONNECTOR HOLDERS
;TROUBLESHOOTING EQUIPMENT
TROUBLESHOOTING TECHNIQUES
1.CHECK CONTROL SETTINGS
2. CHECK ASSOCIATED EQUIPMENT
3. VISUAL CHECK
4. CHECK INSTRUMENT ADJUSTMENT
PAGE
.. 3-6
.. 3-6
.. 3-6
.. 3-7
. . 3-7
.. 3-7
3-7
3-8
3-8
3-8
.3-8
.3-8
.3-8
.3-8
.3-9
.3-9
.3-9
.3-9
.3-9
3-10
3-10
3-11
3-11
3-11
3-11
3-11
3-11
3-11
4-1
4-1
4-1
4-1
4-1
4-1
4-1
4-1
4-2
4-2
4-2
4-2
4-2
4-2
4-2
4-2
4-2
4-5
4-5
4-5
4-5
4-5
4-6

606B Service
5. ISOLATE TROUBLE TO ACIRCUIT . . ......7 4-6;
6. CHECK VOLTAGES AND WAVEFORMS 4-6
7. CHECK INDIVIDUAL COMPONENTS .4-6
8. REPAIR AND READJUST THE CIRCUIT •4^7
CORRECTIVE MAINTENANCE -ft.':. ......V 4t7
OBTAINING REPLACEMENT PARTS .:.,riv. 4-7
SOLDERING TECHNIQUES ...L; ;A«..4-7,
COMPONENT REMOVAL AND REPLACEMENT .... 4-8
CATHODE-RAY TUBE REPLACEMENT ..1 4-8
CIRCUIT BOARD REPLACEMENT 4-10
SEMICONDUCTORS... 4-15
INTERCONNECTING CIRCUIT-BOARD .-
PIN REPLACEMENT ... .... ,v,,
END-LEAD PIN CONNECTORS, .7.., ..... ...
PAGE
PART II—ADJUSTMENT AND PERFORMANCE
CHECK 5-28
INDEX TO PART II—ADJUSTMENT AND
PERFORMANCE CHECK 5-28
ADJUSTMENT AND PERFORMANCE CHECK
POWER-UP SEQUENCE 5-29
A. POWER SUPPLIES 5-30
B. CRT 5-33
C. HORIZONTAL (X) AMPLIFIER 5-35
D. VERTICAL (Y) AMPLIFIER 5-41
E. Z-AXIS AMPLIFIER 5-47
F. DYNAMIC FOCUS 5-51
SECTION 6-INSTRUMENT OPTIONS
SECTION 5—CALIBRATION ;
-MO-
USING THESE.PROCEDURES.-. .... 5-2'
PERFORMANCE CHECK SUMMARY ....... .* 5, r,2:f
ADJUSTMENT INTERVAL .' 5-8;
TEKTRONIX FIELD SERVICE 5-8?
.TEST EQUIPMENT REQUiR ED .,,5-8.
SPECIAL FIXTURES . . .. . .Lt 5-S:
TEST EQUIPMENT ALTERNATIVES ..5^3
PART I—PERFORMANCE CHECK 5-1.2,.
INDEX TO PART I—PERFORMANCE CHECK.-. Ti 5-42;
PERFORMANCE: CHECK POWER-UP SEQUENCE . . .5-12,
A. POWER SUPPLIES . . . .ov, .!.*• ....5,-13;
B. CRT 'V. ;/.... 5-14
C. HORIZONTAL tX) AMPLIFIER..., 5-15
D. VERTICAL (Y) AMPLIFIER ..U •; ... .
.
5-13-
E. Z-AXIS AMPLIFIER .,r. .... ..... 5-2-3
F. DYNAMIC FOCUS J. .
.
5-26
SECTION 7-REPLACEABLE ELECTRICAL PARTS
SECTION 8—DIAGRAMS AND CIRCUIT BOARD
ILLUSTRATIONS
SECTION 9—REPLACEABLE MECHANICAL PARTS
CHANGE INFORMATION
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6068 Service
3•
FIGURE PAGE FIGURE PAGE
NO. N05
5-3: Typical qrt display for horizontal settling
606B Features vi '.
1time measurement 5-38
1-4 Location of line-voltage selector plugs. 5-4 Typical crt display.'for'vertieal settling .•
1-2
regulating-range pins and fuses ,
Installing and removing arackmounted
... 1-4
5; 5.
time measurement ....... .ft '. .5-44
Adjust.'Focus and'Stigmators (without
instrument ... 1-6 Dot Generator). A.. .,v«. ..t.'-. ;5-54
1-3 606B Dimensional Drawing ... 1-13 kri.r;
2-1 Front panel controls and indicators (Option 07 z;L
Position. FOCUS and INTENSITY controls-are
2-2
2-3
screwdriver adjustable)
606B Rear panel controls and connectors
Alternate input connector -data
... 2-2
... 2-3
2~4;
The illustrations in section 8. are located near their associated
diagrams on the foldout page.
3-1 606B Monitor Block Diagram ... 3-2
3-2 Simplified illustration of geometric defocusing ... 3-6 8-1 Semiconductor Lead Configurations.
4-1 Color code for resistors and capacitors .,.<-4-3. 8-2: 606B Board Locator. ;, X
4-2 .4-4' 8.-3:' .. .
.
A1-X-Y Output Amplifies circuit board assembly.
A2-X-Y Preamplifier circuit board assembly.
4-3 Orientation of multi-pin connector holders ... 4-5 '8-4':
4-4 Crt removal ..,,..4-9
., t4-in:
8-5-. A1 -X-Y Output Amplifier circuit board assembly.
4-5 A1 X-Y Output Amplifier board removal ....,8? 6A2-X-Y Preamplifier circuit board assembly.
4-6 A2 X-Y Pre-Amplifier board removal 7. ..-'4-11 8-7: A3 -Low-Voltage Power &Z-Akiis circuit board assembly.
4-7 A3 Low Voltage Power and Z-Axis board 8;8- A6-Dynamic Focus &Front Panel Control circuit board
removal ..4-12 _^^assembly. '',<m' '
4-8 A4 Converter board removal ..:7.7.4- 13 81-9 5A4-Converter circuit board assembly.
4-9 A5 High Voltage board removal .. 4-13 '8' 10: .AB^High-Voltage^circuH' board assembly.
4-10 A6 Dynamic Focus and Front Panel Control a-i tA3-Low-Voltage-Power &Z-Axis -circuit board assembly.
board removal -A ...... ..4214 8-12 A6-Dynamic Focus &. Front Panel Control circuit
4-11 Exploded view of circuit board pin and '?. board assembly. F'v
ferrule ... 4-15 85-13' Test Point and Adjustment Locations A.
5-1 Typical crt display for horizontal settling m4:i Test Point and Adjustment Locations B.-
time measurement .. 5-16 871 5Internal Control and Selector Locations; -' •
5-2 Typical crt display for vertical settling 8-16 Troubleshooting Chart.
time measurement . . 5-20 8-17 Detailed Dimensional Drawing.
.yj
TABLE PAGE
NO.
1-1 Power-Cord Conductor Identification 1-2
1-2 Location of Power-Cord Configuration
Information ';1-3
1-3 Electrical Characteristics 1-7
1-4 Environmental Characteristics 1-11
1-5 Physical Characteristics 1-12
4-
1Low-Voltage Supply Limits': 4-6
5-
1Calibration Procedure Electives 5-1
5-2 Performance Check Summary 5-2
5-3 Test Equipment 5-9
5-
4Low-Voltage Supply Limits 5-31
6-
1Option Information Locator 6-1

606B Service
The general safety information contained in this summary is for,servicing personnel. Specific warnings and cautions will
be found throughout the manual where they apply, but may not appear in this summary.
IN THIS MANUAL
CAUTION statements identify conditions or pract icescthaj;cpuki resu It in damage to the equipment or other property.
WARNING statements identify conditions or practices that could result in personal injury or loss of life.
AS MARKED ON EQUIPMENT
CAUTION indicates apersonal injury hazard hot immediately accessible as one reads the marking, or a hazard to
property including the equipment itself. !J-.. v
DANGER indicates apersonal injury hazard immediately accessible as one reads the marking.
IN THIS MANUAL
Static-Sensitive Devices. own*-''.
AThis symbol indicates where applicable cautionary or other information is to be found.
AS MARKED ON EQUIPMENT
DANGER—High voltage.
Protective ground (earth) terminal: 7'1'^
AATTENTION—refer to manual.
POWER SOURCE
This product is intended to operate from apower source that will not apply more than 250 volts rms between the supply
conductors or between either supply conductor and ground. Aprotective ground connection by way of the grounding
conductor in the power cord is essential for safe operation.
GROUNDING THE PRODUCT
This product is grounded through the grounding conductor of the power cord, To avoid electrical shock, plug the power
cord into aproperly wired receptacle before connecting to the product input or output terminals. Aprotective ground
connection by way of the grounding conductor in the power cord is essential for safe operation.
IV

606B Service
USE THE PROPER POWER CORD
Use only the power cord and connector specified for your product. Use only’ apower cord that is in good condition.
Sr' 1t"'
For detailed information on power cords and connectors, see th$ Operating Power Information in Section 1, General
Information
DANGER ARISING FROM LOSS OF GROUND
Upon loss of the protective-ground connection, all accessible conductive parts (including knobs and controls that may
appear to be insulating), can render an electric shock.
USE THE PROPER FUSE r
To avoid fire hazard, use only the fuse specified in the pafts-list for your product, and which is identical in type, voltage
rating, and current rating. i
DO NOT OPERATE IN EXPLOSIVE ATMOSPHERES
To avoid explosion, do not operate this product in an atmosphere of explosive gases unless it has been specifically
certified for such operation. .. ..
DO NOT SERVICE ALONE r.
Do not perform internal service or adjustment,^of this prodppt- unless another person capable of rendering first aid and
resuscitation is present.
USE CARE WHEN SERVICING WITH POWER OiSi f>s .
Dangerous voltages exist at several points in this product. To avoid personal injury, do not touch exposed connections
and components while power is on.
Disconnect power before removing protective pa'neis. sbltierifig, or replacing components.
CRT HANDLING
Use care when handling acrt. Breakage of the crt causes ahigh-velocity scattering of glass fragments (implosion).
Protective clothing and safety glasses should be worn. Avoid striking the crt on any object which might cause it to crack
or implode. When storing acrt, place it in aprotective carton or set it face down in aprotected location on asmooth
surface with a soft mat under the faceplate. ..... j
CRT IMPLOSION SHIELD <'if ,
1"/
Do not operate the instrument without the proper implosion shield installed.
SILICONE GREASE HANDLING •' X
Handle silicone grease with care. Avoid getting the silicone grease in your eyes. Wash hands thoroughly,.after use.
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606B Service
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606B FEiVTUR ES 1
•..;
::\ J
The 606B Monitor is ageneral purpose, very high-resolution, X-Y display monitor providing aclear, bright display of
analog data. This instrument is designed for display applications as in ultrasonic detection systems, electronic
microscope systems, radiation and thermal scanning systems, speech therapy, volume and vibration analysis, and
medical and biophysical systems. The 606B Monitor may also 6,e used to' provide displays of alpha-numericand graphic
information from computers and other data transmission systems. Resolution of the crt in this instrument is excellent
(shown with Option 6installed). ‘
@
VI

Section W606B
ATION
This section contains abasic content description of both the Operators and Service- Manuals, instrument functional
description, rackmounting information, exterior cleaning, instrument packaging, and specifications. The Specification
portion consists of three tables; Electrical, Environmental, and -Physical Characteristics
AStandard Accessories list and full-page instrument Dlrhehsional 'Drawing' is also contained in this section.
’J:5.
>!
•V'. i'\/: :“r •.-.1
OPERATORS MANUAL ',.J'i ‘Vi- Section 5—Calibration contains procedures to check
The Operators Manual is divided into the following th'repf PP^'onal -performance and electrical
sections- .
”" s’the instrument. Procedures also
.-.. methods; for adjustment of the instrument to
’Specificalicfrts. r:
Section 1—General Information contains^ittsfrtatl^^^p^^^ •<-y.TSr. T;
description, electrical specifications, -
characteristics, standard and recbmm,en^«^^t,®n.1®#^^ent <!onta,n?adescription
accessories, and packaging for shipment instructions, of.^aMabte optrons and patrons of .ncorporated
information for those
Section 2—Operating Instructions contain* inf orn^jg^jw
relative to operating and checking thsS'”fn^um'eh^^i||
operation. •/" J/ rJ:;>'
Section 3—Instrument Options contains e^fcriptigih;;! ,'Z
of available options and gives the location1
.of, the f
incorporated information for those options, ;i'j--
SERVICE MANUAL
The Service Manual contains instructions for
use by qualified service persnhnehonly, Ja.?
Y
avoid personal injury, do not perform' fafjy'jh
servicing unless you are qualified to do S<sC*f
Section 1—General Information contains instrument
description, electrical specifications, environmental
characteristics, standard and recommended
accessories, installation, and packaging for shipment
instructions.
,|?e€tign —Replaceable ^Electrical Parts contains
information necessary tp,,order replaceable parts and
assemblies related to electrical functions of the
•instrument.
Section 8—Diagrams and Circuit Board illustrations
includes ;detailed .circuit schematics; locations of
assembled boards within the*lnstrument, voltage and
waveform information,; Circuit board component
locators,- and locations .‘of adjustments to aid in the
>tp^fO!irr^|f)g of the Adjustment and Performance Check
^{^tidnfof the Calibration procedure.
Section 9—Replaceable Mechanical Parts includes
internet ion necessary to order replaceable
^‘mechanical parts and shows exploded drawings which
teniify assemblies
*
Section 2—Operating Instructions contains
information on instrument installation, front-and rear-
panel controls, connectors and indicators, internal
switches and selectors, checkout procedure and other
information relative to operating and checking
instrument operation.
INSTRUMENT DESCRIPTION
The 606B Monitor is acompact, solid-state instrument
with excellent resolution providing accurate displays of
information from the X, Y, and Zsignal inputs.
Section 3—Theory of Operation contains basic and
general circuit analysis that may be us,efyf. ,for-
servicing or operating the instrument.
Section 4—Maintenance describes, routine and;
corrective maintenance procedures with detailed’’
instructions for replacing assemblies, subassemblie^,
.
and individual components.
WARNING I
High voltage is present inside the instrument.
To avoid electric shock hazards, operating
personnel must not remove protective
instrument covers. Component replacement
and. internal adjustments must be made by
qualified service personnel only.

General Information—606B
The Horizontal (X) and Vertical (Y) Amplifiers process the
input signals (either single-ended or differential) and
provide push-pull outputs to drive the crt deflection
plates. The input signals are applied through the
appropriate +• (noninverting) and -(inverting) INPUT
connectors.
The Z-Axis Amplifier controls the display intensity by
providing avoltage to drive the crt control grid. The input
signals (either single-ended or differential) are applied
through the appropriate +(noninverting) and -(inverting)
INPUT connectors.
The High-Voltage and Low-Voltage Power Supplies
provide all the voltages necessary for operation of this
instrument.
INSTALLATION
INITIAL INSPECTION
This instrument was inspected both mechanically and
electrically before shipment. It should be free of mars or
scratches and should meet or exceed all electrical
specifications. To confirm this, inspect the instrument for
physical damage incurred in transit and test the electrical
performance by following the Checkout Procedure in
Section 2, Operating Instructions. Verify performance
requirements by referring aqualified service person to
the servicing sections of the Service Manual. If there is
damage or deficiency, contact your local Tektronix Field
Office or representative.
OPERATING POWER INFORMATION
This instrument can be operated from either a 1'20-VdJt br
220-volt nominal line-voltage source, 48 to 440 hertz. In
addition, three regulating ranges are provided for each
nominal line-voltage source.
>CAUTION (
To prevent damage to the instrument, always
check the line- voltage information recorded
on the rear pane! before applying power to
the instrument.
Power Cord Information
WARNING
This instrument is intended to be operated
from asingle-phase earth-referenced power
source having one current-carrying conductor
(the Neutral Conductor) near earth potential.
Operation from power sources where both
current-carrying conductors are live with
respect to earth (such as phase-to-phase on a
three -wire system) is not recommended,
since only the line conductor has over-current
(fuse) protection within the instrument.
This instrument has athree-wire power cord
with apolarized two-pole, three-terminal plug
for connection to the power source and
safety-earth. The safety-earth terminal of the
plug is directly connected to the instrument
frame. For electric-shock protection, insert
this plug only in amating outlet with asafety-
earth contact.
Do not defeat the grounding connection. Any
interruption of the grounding connection can
create an electric-shock hazard. Before
making external connections to this
instrument, always ground the instrument
first by connecting the power cord to a
properly mated power outlet.
TABLE 1-1
Power-Cord Conductor Identification
Conductor Color Alternate Color
•Ungrounded (Line) Brown Black
Grounded (Neutral) Light Blue White
Grounding (Earthing) Green/Yeilow Green/Yellow
The power-cord plug required depends upon the ac input
.voltage and the country in which the instrument is to be
used. Should you require apower-cord plug other than
that Supplied with your instrument, refer to the standards
listed in Table 1-2.