Harris SX-1 Technical Manual
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TECHNICAL
SX-1
AM
TRANSMITTER
MANUAL
~
MAINTENANCE
994 8581 001
994 8581 003
MANUAL
T.M.
@
No.
888-2126-028
Copyright
1983
All
HARRIS
Rights
IJHARRIS
CORPORATION
Reserved
Printed
:
De
cember
01,
1983
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SX-1
MANUAL
AM
TRANSMITTER
888-2126-xxx
REVISION
MAINTENANCE
HISTORY
MANUAL
,,----..,
'
REV.
024
022
025
023
020
021
026
027
029
028
II
DATE
09/16/83
09-29-83
09-30-83
10-04-83
10-07-83
10-13-83
10-31-83
11-14-83
11-22-83
12-01-83
ECN
27667A
27736
27740
27737
27731
27738
27770
27779
27833
27800
PAGES
Replaced
Title
&
7-88,
Added Manual
Replaced
Title
7-16
Replaced
Title
7-9,
Replaced
Title
8-33/8-34
Replaced
Title
7-7, 7-8, 7-9,
7-28, 7-34,
Replaced
Title
8-7/8-8
Replaced
Title
iv
thru
2-6,
All
of
Added
3-3/3-4
Replaced
Title
7-30, 7-33,
Replaced
Title
xv/xvi,
7-54, 7-55,
Replaced
Title
xv/xvi,
Added
8-77/8-78, 8-79/8-80,
the
Page,
7-89/7-90,
the
Page,
and
7-65 & 7-66
the
Page,
7-10,
Page,
and
the
Page,
the
Page,
the
Page,
the
xvi
2-7 & 2-8
Sections
the
following:
the
Page,
the
Page,
7-1,
the
Page,
8-2
the
following
AFFECTED
following
2-2,
Manual
Manual
7-35,
Manual
Manual
Manual
7-34
Manual
7-56,
Manual
7-2, 7-6,
Revision
following
Manual
following
Manual
7-31
following
following
7-10, 7-15,
7-36
following
following
IV, V, and
following
following
7-2, 7-5,
7-57,
following
8-1 & 8-2,
Revision
Revision
Revision
Revision
Revision
Revision
Revision
pages:
History
pages:
Revision
pages:
Revision
pages:
pages:
pages:
pages:
pages:
pages:
7-24,
8-2,
pages:
pages:
8-81/8-82,
7-20, 7-21,
8-15/8-16,
Page
History
History
History
History
7-16,
History
History
VII
History
·History
8-45/8-46
History
Page
Page
Page
Page
7-25, 7-29,
Page
8-83/8-84
Page,
Page,
Page,
Page
7-17,
7-86,
8-75/8-76
7-87
7-15
7-3,
7-60,
7-18,
7-34,
&
888-2126-028
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www.SteamPoweredRadio.Com
THE
CURRENTS
DANGEROUS.
SAFETY
REGULATIONS.
AND
VOLTAGES
PERSONNEL
WARNING
IN THIS
MUST
AT
EQUIPMENT
ALL
TIMES
ARE
OBSERVE
This
who
manual
are
aware
is
intended
electrical/electronic
statement
using
The
installation,
involves
qualified
responsible
the
use
During
fire
Protection
of
all
this
or
risks
personnel
for
of
improperly
installation
protection
Association
-
Automatic
-
Installation,
No.
-
Halogenated
other
both
10
ALWAYS
DOORS,
ALWAYS
VOLTAGE
INTERNAL
SERVICE
of
the
circuits.
safety
electronic
operation,
to
exercising
injury
trained
and
standards
Fire
DISCONNECT
ENCLOSURES,
USE
WHEN
as a general
dangers
precautions
equipment
maintenance
personnel
and
due
or
damage
or
inexperienced
operation
must
(NFPA)
standards
Detectors,
Maintenance,
Fire
Extinguishing
POWER
GROUNDING
POINTS
BEFORE
ADJUSTMENTS,
ALONE
OR
guide
inherent
It
is
which
equipment,
care.
resulting
of
this
be
observed.
are
No
and Use
WARNING
BEFORE
GATES,
STICKS
SERVICING.
PERFORM
WHEN
for
in
handling
not
intended
should
.
and
HARRIS
from
personnel
equipment,
recommended
. 72E
of
Agent
OPENING
PANELS
AND
SHORT
MAINTENANCE
FATIGUED.
trained
be
service
and
must
CORPORATION
improper
The
Portable
Systems,
OR
NEVER
and
qualified
potentially
to
contain
observed
of
be
performing
local
following
as
references:
Fire
No.
COVERS,
SHIELDS.
OUT
HIGH
MAKE
OR
a
by
personnel
this
performed
shall
procedures
such
building
National
Extinguishers,
12A
personnel
hazardous
complete
in
equipment
only
or
not
by
be
from
tasks.
codes
and
Fire
Do
not
remove,
covers,
circuits,
doors,
know
short-circuit
enclosures,
your
equipment
IN
CASE
OF
EMERGENCY
DISCONNECTED.
or
gates,
and
tamper
panels
don't
take
with
or
shields
chances.
interlock
. Keep away from
switches
on
access
live
WARNING
ENSURE
THAT
POWER
HAS
BEEN
888-2126-001 i
www.SteamPoweredRadio.Com
Treatment
If
1.
PLACE
@
UNCONSCIOUS
IF
OPEN
LIFT
PUSH
CLEAR
OBSERVE
Electrical
of
victim
VICTIM
AIRWAY
AIRWAY
NECK
UP
FOREHEAD
MOUTH
OUT
FOR
not
is
HIS
ON
FLAT
,
BACK
NECESSARY
IF
BREATHING
Shock
responsive
A
ON
BACK
HARD
follow
SURFA
CE
A-B-Cs
the
®
NOT
IF
BEGIN
BREATHING
TILT
PINCH
MAKE
QUICK
4
REMEMBER
MUST
of
BREATHING
BREATHING,
ARTIFICIAL
HEAD
NOSTRILS
AIRTIGHT
BE
BREATHS
FULL
MOUTH
OMMEN
C
SEAL
TO
ED
C
basic
MOUTH
SOON
AS
suppo
life
RESUSCITATION
POSSIBLE
AS
rt
.
,--....
CAROTID
CHECK
PULSE
IF
ARTIFICIAL
BEGIN
CIRCULATION
Call
If
2.
a.
b.
c.
ABSENT,
for
victim
keep
keep
loosen
(a
PULSE
medical
is
them
em
th
their
recli
©CIRCULATION
DEPRESS
assistance
responsive.
warm
quiet
as
clothing
position
ning
STERNUM
E:
NOT
possible
as
is
2•
TO
112•
1
APPROX.
{
SEC.
BO
APPRDX.
SEC
60
. 1
1
INTERRUPT
NOT
DO
WHEN
soon
as
SECON
PERSON
D
as
recommended)
RESCUER
ONE
COMPRESSIONS
15
2
rT\t/O
5
BREATHS
QUICK
RESCUERS
COMPRESSIONS
BREATH
RHYTHM
GIVING
IS
possible.
COMPRESSIONS
OF
BREAHI
ii
888-2126- 001
www.SteamPoweredRadio.Com
~
Personnel
this
equipment
practices.
procedures,
of
all
personnel
First
Aid
engaged
The
it
is
and
thereby
in
the
are
urged
following
brief
using
the
prevent
installation,
to
information
and
is
only
equipment
avoidable
FIRST-AID
become
is
to
be
to
operation,
familiar
not
intended
used
be
loss
as
prepared
of
maintenance
with
a
reference.
to
life.
first-aid
to
be
give
or
servicing
complete
It
adequate
theory
first-aid
is
the
Emergency
of
and
duty
Treatment
1.
2.
Less
of
Electrical
Extensive
a.
Cover
article.)
b.
Do
clothing,
c.
Treat
d.
Arrange
e.
If
arms
If
hour
vomiting,
soda:
level
of
to
over
if
severe
burned
area
not
break
victim
transportation
or
medical
and
teaspoonful
water
sip
slowly
a
period
vomiting
burns
Burns
and
with
or
apply
for
legs
help
the
give
1
level
(neither
broken
clean
blisters,
any
shock
are
will
victim
him
teaspoonful
about
of
15
occurs.
-
(1st
skin
sheet
remove
salve
as
to
affected
NOTE
not
a weak
of
baking
hot
or
4
ounces
minutes.
(Do
&
2nd
or
tissue,
or
ointment.
required.
a
hospital
keep
be
available
is
conscious
solution
of
soda
cold).
(a
Discontinue
not
give
degree)
cloth.
as
them
salt
to
Allow
half
alcohol.)
(Cleanest
remove
quickly
elevated.
within
and
of
salt
and
each
victim
of
glass)
adhered
as
an
not
and
1/2
quart
fluid
available
particles
possible.
cloth
of
a.
b.
c.
d.
e.
f.
REFERENCE:
Apply
cloth
Do
article.
not
clothing,
Apply
Treat
clean
victim
Arrange
If
arms
ILLINOIS
AMERICAN
(SECOND
cool
break
or
(not
blisters,
apply
dry
for
transportation
or
legs
HEART
RED
CROSS
EDITION)
ice
cold)
remove
salve
dressing
shock
or
if
as
to
are
affected
ASSOCIATION
STANDARD
888-2126-001
compresses
tissue,
ointment.
necessary.
required.
a
hospital
keep
FIRST
as
them
AID
using
remove
quickly
elevated.
AND
the
cleanest
adhered
as
possible.
PERSONAL
available
particles
SAFETY
of
MANUAL
iii
www.SteamPoweredRadio.Com
Paragraph
TABLE
OF
CONTENTS
1-1.
1-2.
2-1.
3-1.
3-3.
3-5.
3-7.
3-9.
3-11.
3-14.
3-16.
4-1.
4-3.
4-5.
4-7
.
4-9.
4-
11.
4-12.
4-13.
4-14.
4-15.
4-16.
4-17.
4-18.
4-19.
4-21.
4-22.
4-23.
4-24.
4-26.
4-27.
4-
28.
4-29.
4-31.
4-32.
4-33.
4-35.
4-37.
4-39.
4-40.
4-41.
Introduction
Scope
Introduction
Introduction
Emergency
VSWR
Power
PDM
Power
Crystal
System
Introduction
Station
Maintenance
Preventive
Maintenance
Toroids
Using
Basic
And
SECTION
Protection
Amplifier
Amplifier
Supply
Failure
Controller
Records
Maintenance•······•••••••·
Transistors
Integrated
Capacitors
Fixed
Variable
Fuses
Switches
Indicators
Resistors
..............
. ................................................
Printed-Circuit
Air
System
The Keypad
Control
Status/Fault
Supply Voltage
Power
Forward/Reflected
PA
PA
IPA
Fuse
Temperature
PDM
Phase
Power
Supply
Current
Voltage
Drive
Finder
Amp
Angle
Level
SECTION
..•...•.•...•.......•..........•..................
Purpose
I.
GENERAL
INFORMATION
...........................................
SECTION
II.
OPERATION
..................................................
III.
......•..................................••••..•..
Operating
EMERGENCY
Procedures
. ........................................... .
Failure
Module
Failure
Failure
........................................
OPERATING
For
PROCEDURES
SX
Transmitters••••·•••··
. ................................... .
. .
..
........................... .
.............................................
Board
SECTION
Failure
IV.
. ........................... .
MAINTENANCE
..................................................
......................
Logbook·••·•·······••••·
Of
Components····••
.••.....•.........•...•.••..••......•.•••.•....
.
Circuits
.
.....
..................................... .
...
...................................... .
. ......................................... .
.
Resistors
......................................
.
...................•....
···
·····••••······•••••
·
····••••••····••••·•·•··
•·
·········••••····•••••···••
.......................................
..................................................
And
Indicator
Switches
. ....................... .
...
Boards
......
. .............................................. .
And
Display
And
Status
Display
.
..........................................
Current
. .................................. .
. ...............
. .............
Power
..............................
Unit
. ................................. .
. ........................... .
....
................. .
..
..................... .
................................................
................................................
Level
Trans
. ..............................
•.•....
Readings·••••••··••••·••••••···••···••·••·••••
is
Detector••·•••••··••••••···••••··•••··••••····
Settings
tors
....
.•..•.......................••.••..•
.•••
•••
•.••••.••••••••••••..•••
.••.•••..•...••••..•..•..••...•..••
....
.......
•••
•••.•
..•
·
.
.
.
.
1-1
1-1
2-1
3-1
3-1
3-1
3-1
3-2
3-2
3-2
3-3
4-1
4-1
4-1
4-2
4-2
4-2
4-3
4-3
4-4
4-4
4-4
4-5
4-5
4- 6
4- 6
4-6
4-7
4-7
4- 7
4-7
4- 9
4-9
4-9
4-9
4-10
4-10
4-11
4-11
4-12
4-12
.,.,..-----.,.,
'---
·
iv
WARNING:
Disconnect
888-2126-026
primary
power
prior
to
servicing.
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TABLE
OF
CONTENTS
(Continued)
Paragraph
4-52.
4-54.
4-55.
4-56.
4-59.
4-62.
4-65.
4-71.
4-
74.
4-77.
4-81.
4-
83.
4-
85.
4-
87.
4-92.
4-95.
4-113.
4-115.
4-116.
4-118.
4-134.
4-
136.
4-
138.
4-141.
4-144.
4-
150.
4-
153.
4-155.
4-156.
4-157.
4-158.
4-159.
4-172.
4-186.
4-194.
4-196.
4-200.
4-207.
4-210.
4-213.
4-217.
4-223.
4-
224.
4-235.
4-240.
4-249.
4-265.
Internal
Testing
Corrective
Replacing
IPA
Module
PA
Module
PDM
Amplifiers
RFI
Board
RF
Oscillator
PDM
Genera
Directional
Phase
AC
Angle
Controller
References•••••••••••·•••••••·••••····•·•·•·•••••
The
Maintenance
Boards
•.•••••••.••••••.•••.•...•
••••••••••••.•••••••••••.••••••••••••••••.•.••.•
A24
tor
Coupler
Detector
Check The 5
Check
Status
Setting
Setting
Plus
and
Multimeter
Up
The
The Band
Programming The
Aligning
Adjustment
Adjustment
Output
Third
Bandpass
The
Of
Of
Network
Harmonic
Filter
Tee Network - Load
L2
Sliding
11
Tap
....................................................
Meter
Calibration
Mechanical
Forward/Reflected
PA
Volts
PA
Amps
Power
Overload
R55
Overvoltage
R54
Power
R57
PA
R58
Underdrive
R56
Overdrive
R51
VSWR -Reflected
R53
VSWR -Phase
Tuning Procedure
IPA
Tuning
Tuning
Adjusting
SX-1 Top Removal
Technical
.......
•••••••••••••••••••••••••••••••••••••••••••••••••••
Supply
Adjustment
Supply
Current
Procedure
And
Loading
The
Modulation
Assistance
Display
Segments··•••••••••••·····••••••••••••
And
and
Replacing
Adjustment
Board
Procedures
Components····•••••••··
•
.••••••••......•.••..••
••••••••••••••
..............................................
.••.•...••.•.......••..•..........•............
A16
...........................................
A15
••••••••••••••••••••••••••••••••••••••.••••
A18
A27Al
Board A25
Volt
And
Supply
Minus
15
Board
Optional
Switches •••
Frequency
PDM
Generator·••··········•
Directional
Phase
Cold
Trap
L2-C2
Angle
Tuning••
L7-C4
And
Tap
......................•.......
Procedure
Zeroing
Current
••••.•••••••••
Power
...
.........
Calibration
Procedures
(Status
Current
(Status
(Status
(Status
Indication
Indication
Indication
Power
Angle
...........
Detector
Controls•••••••••••···•·•··•··••
Monitor
Procedure
•••••··
•···•••••······••··••••••••••••••••••
••••••••••••.•••••••••••••••
Volts•••••••••
Frequency
Coupler•·•·••••••••••••·······•···
Detector••••••••••••••••••••••
••••••••••·············••···••••••••·
Tune•·•••··••••••••••••••••••·•··•
••.••.••.•
Indication
(Status
.
. . .
·
·••••••··••••••·••••·•·•·•···
••••••••••••••••••••••••••••••••••
•••
·•··•••·•••••··•·
A12
······•·•••••••••••••·•••••·•
Synthesizer•••••••••••••••
••••••••••••••••••
•
•••••••••••
Synthesizer•••••••••••••••••••••
·
··••··•·••••·••·••·
••
•···········•••·•·•••
•••••
••••••••••••••••••••••••••••
•
.
...........•.
. ............................
•
•••••••••••••••••••••••••
•••.
••.•..••
.......
.......................
••
••••••••••
••••••••••••••••••••••••••••••••
"1")
••····•·•·•····•·••··
Indication
"2")
"4")
••••••••••••••••••••••
••••••••••••••••••••••
"8")
(Status
.............
.. ..
Indication
(Status
Sample
. ....
Indication
.
...................
Output
....••..................
.•
• •
••.••••••
•
•.•••.•••••••
"16")
And
"32") ••• ••••••
"64")
•
•·••••••
••••••••••••••••
•
••••••
••••••·•
..........................................
•
..
••
•••
. .
•
•
.
.
Page
4-14
4-
14
4-14
4-14
4-15
4-15
4-15
4-16
4-16
4-
16
4- 17
4-
17
4-17
4-17
4-18
4- 18
4- 20
4-20
4-21
4-22
4-23
4-25
4- 27
4-28
4-28
4-28
4-29
4-29
4-29
4-29
4-29
4-29
4-31
4-32
4-34
4-34
4-34
4- 35
4- 35
4-36
4-36
4- 37
4-37
4-38
4-39
4-40
4-41
WARNING:
Disconnect
888-2126- 026
primary
power
prior
to
servicing.
V
www.SteamPoweredRadio.Com
TABLE
OF
CONTENTS
(Continued)
Paragraph
5-1.
5-3.
5-5.
5-6.
5-8.
5-9.
5-10.
5-11.
5-12.
5-13.
5-14.
5-15.
5-16.
5-17.
5-18.
5-19.
5-20.
5-21.
5-23.
5-24.
5-26.
5-27.
5-28.
5-29.
5-30.
5-31.
5-32.
5-33.
5-34.
5-36.
5-37.
5-38.
5-39.
5-40.
5-41.
5-43.
5-44.
Introduction
Initial
Troubleshooting•••••••••••••••••••·••••••·••••••••••••
Symptom:
Buttons
Passi
Are
ble
Loss
Loss
System
Loose
Single
Symptom:
Illuminated
Possible
Fault
Symptom: Low,
But
Contactors
Or
Status
Possible
Open
Failsafe
Fuse
AC
Voltages
Open
Symptom:
Light
Scale
00
Illuminated.
Approximately
On
Keypad Shows
Possible
Transmitter
RF
Contactor
Acorn
Output
Burnt
Phase
Glass
Symptom:
On. The
May
Want
Possible
Power
Ribbon
System
Status
Symptom:
Display
Voltages
Possible
U40, The
SECTION
V.
TROUBLESHOOTING
..................................................
Transmitter
Illuminated•••••••••••••••••••••••••••••••••••••
Causes
Of
AC
Power
Of
Plus
Controller
Ribbon
System
Transmitter
....................................
Causes····••·•···········•···•••••••··•••••·•••••
Status
Med
Do
Indicated··•••••····••···•••••••···•••••••••···•••
Causes
Door
••.••••••••••••••••••••••••
Interlock
Open
Contactor
•••••••••••••••••••••••••••••••••••••••••••••••
On
Transmitter
Causes••••••·••••••·•··•••····••············•···•
Grossly
Arc
Gap Above
Tuning
Or
Loose
Angle
Arc
Detector
Gap
Transmitter
Digital
To
Perform
Causes
Supply
Cable
Controller
And
Multimeter
Transmitter
Causes·•·••••···•··••••••••••••••••••••••••••••••
Analog
Will
....•........................•.....•.....•.
•••••••••••••••••••••••••••
Or Minus 15
Locked
Connectors······••·•••·•······•••••••••••••
Controller
Will
•................•.•...........•..•.•.......
Or
Not
Energize.
......••.•........•...••.•••.•••...........
A25
Coil••••••·•·••
All
1/8
32,
Or
Transmission
Or
Loading
Connections
On
Directional
Display
An
··
·······•••·····••
Voltages
Not
Turn
On -No
Volts••••••••••••••••••••••••••
Out···•••••••••••••••••••••••••
Malfunction
Not
Turn
High
Pushbutton
Open
•••••••••••••••••••••••••••••••••
.••...••••..•..••••.•.•.••••...••••.•.
Fault
Three
And
64,
Light
Are
or
Panel
96
Mistuned
On -Fault
No
Fault
•
•••••••••·····•••••·····•
Illuminated.
Meters
Oscillating.
•••••••••••••••••••••••
Or
Antenna
Line
Loading
Control••·•••••···••···••·••
Control
In
Output
Cable
Bad Or
Coupler
May
Or
May
Not
May
Be
Garbled.
"ON"
Function
On
Status
And
••••••••••••••••••••
Indicators
Lamp
o
•••••••••••••••••••
Connector
Defective
Network
Disconnected
Board
Be
Able
The
By
Itself
•
•••·•••···••·······••··
Multimeter
Control
••••
Lamp
•......
Illuminated
Raise
Indicate
Position
Problem •••••••••
Failure
••••••••••••••
••••••••••••••
To
Be
Transmitter
••••••••••••••
Connections··••••••·•·•••·•••••••••••·•••••
Read
To
Board··•·····••··
Board
Operates
••••.••••••••••••
Normally
Incorrectly•••••••·••••••••·•••••••••
Digital
Converter
·
·•·•·•••••••••••••••
But
All
Digital
Is
Bad··•••··••••••
••
••••
...•..
Illuminated
Up
••
•••••
••••••••••••
••••••••••
Turned
Board
••
••••
••••••
•••
•··
••••
•
Page
5-1
5-4
5-4
5-4
5-4
5-4
5-4
5-4
5-4
5-4
5-4
5-4
5-5
5-5
5-5
5-5
5-5
5-5
5-5
5-5
5-5
5-5
5-6
5-6
5-6
5-6
5-6
5-6
5-6
5-6
5-6
5-6
5-6
5-6
5-6
5-7
5-7
~
~-
vi
WARNING:
Disconnect
888-2126-026
primary
power prior
to
servicing.
www.SteamPoweredRadio.Com
Paragraph
5-
45.
5-46.
5-47.
5-48.
5-49.
5-
50.
5-
54.
5-56.
5-5
7.
5-
58.
5-59.
5-
60.
5-61.
5
-62.
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63.
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64.
S-76.
5
-77.
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87.
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101.
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105.
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106.
5-111.
5-114.
5-116.
5-
118.
5-
120.
U38,
lOV
Q31, Q30,
U57
Analog
Symptom:
Transmitter
Contactors
Possible
Fault
Symptom:
But
No
Not
Be
Status
Transmitter
Power
On
. • • . . . . . . . . . . . . . . . . . . . . . . . • • . . . . . • . . . . . • . • • • • • • • . . • 5-7
Symptom: Remote
Possible
REMOTE/LOCAL
Remote
Remote
Loss
Ribbon
Of +10
Optical
Troubleshooting
Possible
Fault
Supply
Causes
Status
Voltage
Overloads
Fault
Fault
Fault
Fault
Overload
Status
Random
PA
PA
PA
Trips
Current
Current
Current
Status Indication
Status
Status
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . • . . 5-
Random
Shorted
Trips
Damper
Mechanical
Shorted
HV
Is
Modul
Fault
Reflected
Trips
Power
Continuous
Fault
Output)
B+
Applied)
ator
Status
Sample)
Occur
.......
Status
......................•.....•.....•••.••••....••.
Continuous
Fault
Handling
Status
MOSFETS
TABLE
OF
CONTENTS
(Continued)
Reference••••••••••••••••••••••••••••••••
U40's
Buffer•••••••·•··••••••····•••••••••••·•·····
Click
Causes
Output
Causes•·•••••••••·•••
Control
Control
Or
Voltage
Shuts
Chatter
Regulators•·•••••••••••••••••·••
Off
Immediately After
Or Drop Out
Intermittently
•••••••••••••••••••••••••••••••••••••••••••
. . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . 5- 7
Stays
And
Control
Switch
Improperly
Unit
On
(Contactors
High
Voltage
Functions
Supply
Do
Not Wor
•
•·•••••••••••••••••••••••·•
•••••••••••••••••••••••••••••••••••••
Wired•··•···············••••••
Not
Functioning·••••••••••••••·•••••
Volts•··••••••···•••••••••••••·•·····•••••
Connectors
Isolator
A 5
for
Indication
Too
Without
"2",
With
Overloads
Overloads,
Overloads
Indication
Indication
With
Diode
Failure
Filter
....
Efficiency•·••••••••••••••••••••••••••••••••••••
Indication
Loose
.••.•..•••.•••.•••••.••.•.••.••.•
Failure••••••••··••••••••···••·••••••••
Volt
Supply
Overloads
"l",
High•••••••••••••
The
High
PA
Current
Failure··••••••••••
•••••••••••••••••••••••••••••••••
Power
Supply
••••
Voltage
Overload
On
•••••••••••••••••••••
•••••••••••••••••••••••
Audio••·••·•··········••••••••••••••
At
Turn
Continuous
Without
"4",
"8",
"16",
On
•••••••••••••••••••••••••••
Cycling
The
High
Underdrive
Voltage
•••••••••••••••••••••
Overdrive····••·····••·•··•••·
Power
Supply
Audio••••••••••••••••••··•·
....................................•.
Of
Safety
Capacitor
..
.................
"32",
Shorting
(May
VSWR
Switches On
Only
Short
.....
(Directional
·•···•···••••••••·••····•••••·•·•••••••••••
With
High
•...
Cycling
Indication
Cycling,
Indication
Levels
............
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-
"64",
No
Power Out
"96",
Of
Modulation
.
.•..........................•
VSWR
(Phase
••••••••••••
VSWR
(Both
VSWR
Angle
. . . . . . • • • . . • . • • • • • • • . . . • • • • • • • • • • • • • • • • • • • • • 5-
Turn
Energized),
May
Or
May
k••••••••••••••
••
Voltage
•••••••••••
••••••••••••
••••••••••••••••••
On
••••••••••
Current
·
•·•••·•·····
Doors
Out
Whe
n
........
Co
And
upl
High
..
er
Detector
•
•••••••••••••
Sensors)
•
•••••
On,
••••••
··•••··
• • •
••
.....
•
•..
••••••
5-7
5- 7
5- 7
5-7
5-
7
5-8
5-8
5- 8
5-8
5-8
· •
5-8
5
-8
5
-8
5-8
5
-10
5-1
••• 5-10
5-
10
5-
10
·•
5-10
5-11
5
-11
5-
11
5- 11
·
5-11
12
5-12
5-
12
••• 5-12
.
5-12
5-13
5-
13
5-13
14
5-
14
5-14
5-
15
15
0
WARNING:
Disconnect
888-2126-026
primary
power
prior
to
servicing
vii
.
www.SteamPoweredRadio.Com
TABLE
CONTENTS
OF
(Continued)
Paragraph
5-123.
5-128.
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222.
5-
5-223
.
5-225.
5-226.
5-227.
5-228.
5-229.
Testing
In-Circuit
In-Circuit
Ohmmeter
MOSFETS
Ohmmetering The
Ohmmetering The
Testing
Troubleshooting
Symptom:
Open
Ql,Q2
Ul,CR4
U2
U3
Fuse/Loss
,CRl
..................................................
....................................................
..
.......
Troubleshooting
Symptom:
Symptom:
Troubleshooting
Symptom:
Come On •
To
Blown
Check
IPA
PA
Check IPA
Tuning
IPA Output
IPA
Circuit
Half
Check IPA
Check
Oscillator/Frequency
Oscillator/Frequency
Coax Open
Troubleshooting
Causes
Passi
ble
Impedance
Failure
PA
Modulator
Modulator
odulator
M
Voltage
Drive
The
Phasing
Probing
Low
Procedure
RF
Troubleshooting
Troubleshooting
Symptom:
Noise
Level
DC
No
De
012
R30 De
Sample
f
fective
Symptom:
The
From
Symptom:
.............................................
••••••
•••••••
•••·•··••••
•.••••••••
•
No
The
the
Output
.•.•.•
And
(A6
AMP
PDM
A4)
And
(Al
PA
•••••••••••••••·
·
•·
IPA•·
RF
....••.•••.••.••••••••••.••.
+30V
of
••..•.•.•••••..•..••••••••....••••.••••.
•
•
Oscillator•••···•••·••·•·•••····•••·•
••••••••••••••••••••••••••••••••••
MOSFETS
A7)
Transistors
• ••
...............................................
·••••••••••••
Frequency
The
J2
Output
No
Improper
The
Underdrive
•••••••
Fuse
Drive
Square
Tuning···•••••••·••••••••·•·••••••·••••••••••
Failure
Drive
At
Output
Drive
RF
Overload
•••••
•
••••..•.••••••.
...............................
Waves
Open·••··•·•••••••••···•··•·
•••.••••.••.•••••••.••••.••••••••.••••••
Supply
And
Synthesizer•••••
•••••••••·••····•••••·•·•••
6
Pin
Frequency/Loss
System•••••·•········••••··•···
Will
•••••••••••••••••••••
•
................................ .
.
Not
.•..•••••••..•.•••••.•••••
•
Voltage••••••••••••••••••••••
Synthesizer
To
Ratio
. . .
Change
............••......•..•.
··•·····•·•·········•···•
No
Has
...
. .
..
.
Zero
Pulse
Widths
••••••••••••••••••••••••••••••••••••••••••
•
••••
Volts/PA
PA
a
.........
. .
Change
• •
Failure
Failure
Failure
Inside
Testing
.........
.
..........................•...
•.•••••••••••••••••••.••••••.••.•••••.•
..••••
•
- Open Or
-
-
Of The
•.••....•••..••••.••.••.•.•....•••.••••••
.
Measurement•·
Noise•••••·•·••••·•••••
AM
PDM
the
Null
Hum
........
ective
Pulses
No
Transmitter••••
Imba
Control
.
••••••••••••••••••••••••••••••••••••••••••••
.........................................
.
.....
At
lance
In
Synthesizer
Amps
.....
.
Short····•••···•·•·
Short
•..•.•...•••..•...•....••...••.
Open•••••··•••••••••••·••••••••••·•·
Transmitter·•·•
........................••......•.
.
...
·
Generator•••••••••••••••••••••••••••
R30
J4,
...
Causing
··•·•·•·•••·•••·•·••••·•··••·•
•
••
•
......
.......•.............•..........
.
Output
Allow
IPA
Effect
..
.
•
Lock••••••••••
Of
Transmitter
••••••
•
•.••......
•
•••••••••
•
Output•••••
Drive
•••••••••••••••
•••••••••••
•
·••····•••
·
·•••·••·••·•••••
•
••••••••••••
•
••
•
The
On
.......
.
Power
.
Output
•
........
••••
•
•
···•·
•
....
.
··
• •
·••
• •
Page
5-15
5-16
5-17
5-18
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5-24
5-24
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.
.
,-....._
5-24
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5-38
viii
WARNING
Disconnect
:
888-2126-026
primary
power
prior
servicing.
to
www.SteamPoweredRadio.Com
TABLE
OF
CONTENTS
(Continued)
Paragraph
5-230.
5-231.
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6-1.
6-3.
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66-27.
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6
6-44.
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15.
-43
.
.
.
Symptom:
Causing
Tro
ubleshooting
High Ambient
Air
Obstruction
Module
PA
Output
Abnormal
RF
Introduction
Personnel
Principles
AC
RF
AC
Switch
System
Stat
Purpose
Overview
Description
Bus
Read
'A'
'B'
PDM
PDM
PDM
PDM
Oscillator
Optional
Heat
Temperature
PA
Tuning
Drive
Power
Power
Controller
Board
Controller
us
and
Arbitration
Write
Bus
Synthesizer
Status
Overload
PDM
PDM
And
Analog
Status
A-Bus
MUX
And
Analog
Bus
Analog-Digital
Keyboard
Analog
Genera
Amplifier
Pull-Up
Filter
Output(s)
One
Or More
High
At
J4
Always
PDM
Amplifiers
Temperature
In
A High
To
Readings
State,
Conduct
•••••••••••••••••••••
Full
Time
. .............................................. .
...........•.........•.•..•.••.........•.
Sinking
Is
Power Too High
.................................
High
••••••••••••••••
.
................................... .
•••
••••
••••••••••••
........
.................................................
RF
Drive
Phase
SECTION
Level
Balance
VI.
PRINCIPLES
...................................
. .................................. .
OF
OPERATION
..................................................
Protection
Of
Operation•·••·•····•••••••·•••••·•••••••••••••••
Flow
Flow
.....•.••..•.••...••..•.....••
.....•••.
. ........................................ .
.•..
•.
...•
•.•••.•
...••..
•..
•••...•.••..•.•...•••..••.•.
..........................................
. .............................................. .
Board
Multimeter
................•..................................
..................•......................•........
Of T
he
Logic
Selection
Devices
Input
Input
Power
Status
And
LEDs
Address
Scaler
Multiplexer
Devices
And
Outputs
tor
. ......................................... .
Control
Latch
Latch
Latch
Latch
Relay
Latch
Decoder
Data
....•.••..•.•.•••........••.............•..
Converter
Display
..••.......•...•................•.•••.....
••••••••
...............................................
Board
...........................................
..................................................
Al6
. ............................................ .
Frequency
Synthesizer
.
........
···•••••••·
Bus
. .................................. .
........................... .
·
••••••••··•••••
•
••·••··
.....................................
. .................................... .
Latch
U42
U46
U47
. ...............
U48
Control
U53
Latches
System
Controller
•
••••••••••••••••
U54
. ......................... .
. ................................ .
.
........
...................... .
..
.................. .
. .............................. .
Latch
U49
.
..
.................. .
. ................................. .
U52
. .....................
U29
And
U30
•••••••••••••••
U40 ••••
(Al6)
••
U6
. ...................... .
. .................... .
. .................... .
••
••••••••••••••••
••••••••••••••••••••
..
...... .
•••
....
••
....
•
.
·
6-9
6-11
6-12
6-12
6-13
6-13
6-14
6-14
6-14
6-14
6-14
6-15
6
6-17
6-19
6-20
6-21
6-21
6-22
Page
5-39
5-39
5-39
5-40
5-40
5-40
5-40
5-40
5-41
5-41
6-1
6-1
6-2
6-2
6-2
6-3
6-5
6-6
6-7
6-7
6-7
6-7
6-8
6-9
6-9
6-9
-17
WARNING:
Disconnect
888-2
primary
126-026
power
prior
to
servicing
ix
.
www.SteamPoweredRadio.Com
TABLE
OF
CONTENTS
(Continued)
Paragraph
6-128.
6-132.
6-134.
6-140.
6-
144.
6-146.
6-153.
6-155.
6-
159.
6-
160.
6-163
6-171.
6-172.
6-173.
7-1.
7-3.
8-1.
.
IPA Board e I t t t t t t t t t t t t t t t t I t t t I t I t I t t I t I I I t I t I t t I t t t t I I I t t I
IPA
Toroid
PA
Board
PA
Toroid
Output
Theory
Directional
VSWR
High
Low
Introduction
Replaceable
Introduction
Board
Voltage
Introduction
Description
Voltage
Introduction
Description
Board
....................................................
...................................................
Network ..............................................
Of
Design
Coupler
(Or
Power
•..
Power
........................
........
Parts
SECTION
..•••.••.........•........................
Phase
...........•.......•.................•........
••••••••.••.•••••••••••••.•...•••••.••••••••••
SECT
Angle
Supply
.....................•••••••................
Supply
ION
.....
Service••••••••••
VIII.
Detector
Board)
.................
··
·······•••••••••········•·••·••·•·
VI
PARTS
I.
...
......
MAINTENANCE
LIST
.....•.....
•
•••••••·••
.
.....................
AIDS
..................
..
•.....•...•••..
••••••••••
••••••
..................................................
.
Page
6-23
6-24
6-24
6-25
6-25
6-26
6-28
6-28
6-29
6-29
6-29
6-32
6-32
6-32
7-1
7-1
8-1
,,,-----_.
A-1.
A-4.
A-6.
A-8.
A-17 .
A-18.
A-23.
A-25.
A-
26.
A-28.
A-29.
A-32.
A-
34.
A-
35.
A-36.
A-40.
A-42.
A-44.
A-47.
A-54.
A-56.
A-89.
Introduction
Unpacking
Returns
General
Setup
General
Equipment
Pre-Installation
Inspection
Mechanical
Ground
Electrical
Power
Electrical
Customer
Audio
Output
Pre
- Turn
Initial
Initial
Technical
......
And Exc
Installation
Procedures
Requirements
Placement·
Installation•·•
Positioning
Strap
Installation
Requirements
Interface
Input
Coax
On
Electrical
Turn
Turn
Assis
APPENDIX
INSTALLATION
A.
..................................................
.........
hanges
..•............•.•..........••.•..............
Inspection·····••····••••••••••••••••••••••••
......................................
. ..................................... .
Information••••••••••••••••••••••••••••••
•
•••••••••••••••••••••··••••••••••••••••
·•••••••••••••••
•••······••••••••·····•
·
. ................................................ .
•
••··············•••••·········•••••
. ..................................... . Equipment
Installation
Installation
Connections••••••••••••••••
Installation
Cable
On
Installation···
Procedures
.............................................
On
tance
..........................................
. ..............................
. ..................................... .
••••..•••••.•••..•••••••.••••••.........
Procedure·••······•···•··•
Procedure•·
Checks
. ............................... .
···
·•···••••·······••••·
·
········•·••••••••••••••••
. .................................. .
•• ••
•
••••·•••·
••••
..
••••••
. .
A-1
A-1
A-1
A-1
A-4
A-4
A- 6
A-6
A-6
A-7
A-7
A-7
A- 7
A-7
A-7
A-8
A-8
A-8
A-12
A-12
A-13
A-17
--
X
WARNING:
Di
sconnect
888-2126-026
primary
power
prior
to
servicing.
www.SteamPoweredRadio.Com
TABLE
OF
CONTENTS
(Continued)
Paragraph
B-1.
Introduction
APPENDIX
B.
TEST
EQUIPMENT
..................................................
Page
B-1
WARNING:
888-2126-026
Disconnect primary power prior
to
servicing.
xi
www.SteamPoweredRadio.Com
LIST
OF
TABLES
/ ~
Table
2-1.
2-2.
2-3.
2-4.
2-5.
2-6.
2-7.
2-8.
2-9.
2-
10.
2-11.
2-12.
2-13.
2-14.
2-15.
2-16.
5-1.
5-2.
5-3.
Oscillator
System
Status
System
PDM
Generator
Base
PDM
PDM
AC
Indicators
and
PA
AC
PC
Rear
of
Amplifier
Filter
Controller
IPA
Board
Indicators
Board
Power
Power
View
Optional
Typical
Board
Controller
and
Multimeter
Controller
SX-1,
Board AlO,
.......
A5
and IPA Power
Al,
Controls
Panel,
Panel,
of
Transmitter
Frequency
Readings ....
Troubleshooting
Listing
Fuses,
of
Protection
SX-1
Xmtr
Al6,
Board
Controls
Boards
Board
.................................................
Controls
Controls
the
Controls
Board
Al3,
Board A12,
Board A14,
Al5,
Controls
and
A6
and
Controls
A25
and
.........................•.....................
and
and
and
Showing
Synthesizer,
•.....•..•..
SX-1
AM
Devices
•.•••..••.•..••••••..•.•••.•..••••.•••.••...•.•.
and
Indicators
Controls
and
Controls
Controls
and
and
Indicators••••••••••••••••
Indicators•••••••••·••••••••••••••••·
A7,
Controls
and
Indicators••
Fuse Al9F2,
Splitter
Board A26Al,
Indicators••••
Indicators••····••••·••·
Indicators
Interlock
Controls
•.•
......•.•.••.••.••..•.....•.•
Transmitter••••••
in
SX-1
••••··••••···•••••··••••···
•••••••••••••••••••
Indicators••••••••••••
and
Indicators
Indicators
and
Indicators
Controls
•••••
and
••••••••
••••••••••••
•••••••••
•••••••••••
Controls
·
·••••••••••••
•••
•••·•••
•
•••••·····
•••••••••••••••••••••••••
Switches
and
Indicators
•••••
•••••••••••••
•••••••••
•••••••••••••·
•
.
Page
2-3
2-5
2-7
2-11
2-13
2-15
2-17
2-19
2-21
2-23
2-25
2-27
2-29
2-31
2-33
2-34
5-1
5-49
5-51
.
.,.,.-,---.___
6-1.
7-1.
7-2.
7-3.
7-4.
7-5.
7-7.
7-8.
7-
9.
7-10.
7-11.
7-12.
7-13.
7-14.
7-15.
7-16.
7-17.
7-18.
7-19.
7-20.
7-21.
7-22.
7-23.
7-24.
Analog
Replaceable
SX-1
Spare
SX-1
Transformer,
Transformer,
Oscillator
Frequency
IPA
PA
Crystal
Phase Angle
SX43
SX43S
Rec S/C and Fuse
SX-1
Coax
SX-1
PDM
PC
Status/Multimeter
System
PDM
Signals
lkW
Fuses,
PA
Toroid
Toroid
Software
Software
Parts,
Cable,
Basic
Amp
Bd
Assy,
Controller
Gen
and
Parts
SS
AM
Xmtr
SX-1
Board ...
Toroid
Toroid
Bd
•••.•••••.•.
Syn Board
Board,
Bd
••.•...•..
Selection
Detector
Pkg
Format/Freq
PA/Pwr
lkW
AM
Board
Boa
•••••
PDM
r d
••••••••••••••••••••••••••••••
Multiplexer
List
Xmtr
..•..........•
Index••••
••...••.••••....••.•.••••••••••••.••••••.••.•
.••••••....•..••••..•••••••.••••••.•••••••
.
...........................................
....................•.................•...•..
Pins
• .••.•••.••
.............................
••••••••••••
.
......•.•...
•••.
••••••••••••••••••••••••
. ........................................... .
16
to
2
............•.........•...•...•.....•..
.••...•
List•···••••·•··•••••··••••••·•·••••••••••••••
....•...
....•.....•.......•••••....••.•..•••••••••••.••
Pkg
..•.•............••••..•••••••...•••••••••••••
Kit
.•...
........••.•••••••.••.••.••..••••••.....•
Split••••••••••••••••••••••••••••••••••··••••
Xmtr •..
•••••••••••
Amp
•••••••••••••••••
Bd
•··•••·•··•••·••••••••••••••••••••••••••••••
Board••·••••••••••••••••·•••••••••••••••••••••
••.
....•..•
....••.....•••
•...•.••
••••
.•••••
••..••••••••••••••••.•••••••••••••.
•••••
••
•••••
•••••••
......
...•••••
••••••••••••
••••••••
..
.••••.•.•.••••••.••
•..•....•..••..•..
••.....
•••••
••
..•.•••••••••••
•••..•
••••
••••••••••••••••
•••
•••••••••
• •
••...•...
•
••••••••••
•••••
•••••••
6-16
7-2
7-6
7-7
7-10
7-
11
.
7-
12
7-13
7-15
7-
18
7-19
7-20
7-
23
7-24
7-25
7-26
7-27
7-28
7-29
7- 37
7-39
7-40
7- 44
7-46
•
••
xii
WARNING:
888-2126-026
Disconnect primary
power
prior
to
servicing.
www.SteamPoweredRadio.Com
LIST
OF
TABLES
(Continued)
Table
7-25.
7-26.
7-27.
7-28.
7-29.
7-30.
7-31.
7-32.
7-33.
7-34.
7-35.
7-36.
7-37.
7-38.
7-39.
A-1.
A-2.
A-3.
Switch
Dir.
Customer
RFI Board
1
kW
Keyboard/Display
H.V.
IPA Pwr
PDM
Cable
Cable
Cable
Cable
Cable
AC
Special
Equipment
List
Customer
Board
Coupler
Int.
.......................................................
PDM
Filter
Filter
Splitter
Pull-Up
114,
Power
Ill SX-1 Main
#6,
Control
113,
HV
#5,
Jumpers
Controller
Installation
Supplied
Supplied
Interface
............................................ ,• ....... .
Board
Board
Bd
Board
Filter
Board
with
. ...........................................
.............................................
Bd
..............................................
Bd
. .......................................... " .
...............................................
Bd
.............................................
......
Supply
......•
Drawer
.........................................
..........................................
..
. .
•...•••.•...•.•.•..............•.
.
........
.......
.......................
.............................................
. ............
. ........................................... .
Tools
with
Transmitter••••••••••••••••
Connection
Transmitter
...
.............................. .
and
Equipment
and
Points•••••••••••••••••••••••••••
.......................
Listed
on
•
••••••••••••••••
Packing
Check
,,
.
...
.
,..
.
Page
7-50
7-51
7-52
7-54
7-58
7-59
7-60
7-61
7-62
7-63
7-64
7-66
7-67
7-68
7-69
A-5
A-5
A-9
WARNING:
888-2126-026
Disconnect primary power prior
to
servicing.
xiii
www.SteamPoweredRadio.Com
LIST
OF
ILLUSTRATIONS
Figure
2-1.
2-2.
2-3.
2-4.
2-5.
2-6.
2-7.
2-8.
2-9.
2-10.
2-11.
2-12.
2-13.
2-14.
2-15.
4-1.
4-2.
4-3.
Oscillator
System
Status
System
PDM
Base
PDM
PDM
AC
Indicators
IPA
and
PA
AC
Panel
PC
Rear
Controller
and
Controller
Generator
of
SX-1,
Amplifier
Filter
Controller
Board
Indicators
Board
Power
Removed From
Power
View
Optional
View
Showing
Directional
Top
of
SX-1
Board
Multimeter
Board AlO,
.....................................................
AS
Al,
Panel,
Al6,
Board
Controls
Boards
Board
and
.................................................
Controls
Controls
Controls
Board
Al3,
Board
Board
Al5,
Al4,
Controls
and
A6
and
Controls
A25
and
IPA Power
and
and
and
Controls
Al2,
Controls
Controls
Indicators•
A7,
Controls
and
Fuse
A19F2,
Splitter
Indicators··•••··············•••····••
Indicators
Transmitter·••••••••
Panel,
of
Frequency
Controls
Transmitter
Synthesizer,
11
Cover
Coupler
••..•..••..•..
Cover
and
Indicators
Showing
Interlock
Controls
.. ..
.•.................•....•...•••.•......
Screws···•••·
•
•••.•.•••••.•••••••.••.•••••••••.•..••
Indicators•••••••••••
and
Indicators
and
Indicators
and
Indicators
and
Indicators••••••••••••••••
•
••••••••·•·••••••
and
Indicators•••••••••
Indicators••••··••
Controls
Board A26Al,
and
Controls
Top View With Power
•·•••••·••••·••••••···•••
Front
View
Switches •••••••••••••
and
Indicators
••
•·•••••••••·•••••••••••
•••••
••••••••••••
••••••••
••••••••••••
•
••••·
••··
·•····•
••••••••••••••
•••••••••
•••
•·
.
.
Page
2-2
2-4
2-6
2-10
2-12
2-14
2-16
2-18
2-20
2-22
2-24
2-26
2-28
2-30
2-32
4-42
4-43
4-44
5-1.
5-2.
5-3.
5-4.
5-5.
5-6.
5-7.
5-8.
5-9.
5-10.
5-11.
5-12.
5-13.
5-14.
5-15.
Out
line
PA
Transistor
J4
on
Ql
Collector
50
usec
Upper
Lower
By 4
Upper
Lower
PA
Transistor
PA
Transistor
PA
RF
PA
RF
60
kHz
15
volts
Upper
Lower
ground
Upper
Lower
Upper
Lower
PDM
Amp
JS,
J6
of
MOSFET
Identification•••··••••
A16
Oscillator
on
A25
per
division••••••
Trace -A16
Trace -Q2
•••••••••••••••
Trace
Trace
- IPA
- IPA
Collector,
Outputs
Outputs
Drive
Drive,
Trace
Trace
Trace
Trace
Waveform,
PA
Square
p-p
.........•............•.......•..............•......
- U5-9
Q2
by 2
to 4 volts
- U7-6
- U8-6 (R59)
ON
Waves
Collector
Trace -Ul0-12
Trace
- U9-7 (R46)
A6,
A7
(Cases
Outputs,
of
••••••..••••.•••.••.••••••••••.••.••.••••••..••
·
••·····••••••······•••••••
-
15
AC
Controller
Oscillator
••
•••••••••••••••••••••••••••••
Input,
Transistor
from
from
PA
at
lkW, 30
at
A15
on
A15
(2
(R42),
(R62),
250
MOSFETs)
volts
10
One
One
OFF,
PDM
on
volts
3.5
U8
U9
•••••••••••••••••••••••••••••••••••••••
p-p
·••••••··•••··•·•
30
volts
•••
••••••••••••••••••••••••••·•••••···
Board
A16
volts
Output,
Output
Oscillator
per
division
20
p-p,
at
Board
volts
Quad 1450 kHz,
Quad 550 kHz,
30
volts
PDM
volts
Generator
p-p
p-p
•••••••••••••
••••••••••
U5-ll
Generator
A15, Waveform
per
division
volts
leads
15
volts
leads
volts
p-p
by 90
by
p-p
p-p
90
is
degrees
degrees
ClO
10-25
before
•
per
division••••••
No
Modulation
No
Modulation
•••••••••••••••
and
U5-14,
de
offset
on
both
••••••••••••••••
•••••
•
••••••·····
volts
Divide
•••••••••••••
••••••
•
••••••••
above
traces)
••••
•••••••
p-p
•••••
5-16
5-19
5-42
5-42
5-43
5-43
5-44
5-44
5
-45
5-45
5-46
5-46
5-47
5-47
5-48
·
-------------
xiv
WARNING:
Disconnect
888-2126-026
primary
power
prior
to
servicing.
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,..,..-----.._
Figure
LIST
OF
ILLUSTRATIONS
(Continued)
6-1.
6-2.
8-1.
8-1.
8-2.
8-3.
8-4.
8-5.
8-6.
8-7.
8-8.
8-8.
8-
8.
8-8.
8-9.
8-9.
8-10.
8-11.
8-12.
8-13.
8-13
8-14
8-15.
8-16.
8-17.
8-18.
8-19.
8-20.
8-20.
8-20.
8-20.
8-20.
8-
20.
8-20.
8-20.
8-20.
8-20.
8-20.
8-21.
8-22.
8-23.
8-24
8-25.
Output
TEE
Wiring
Wiring
Wiring
Schematic
Schematic
Schematic
Schematic
Schematic
Schematic
Schematic
Schematic
Schematic
Schematic
Schematic
Schematic
Schematic
Schematic
Schematic
.
Schematic
.
Schematic,
Schematic
Schematic
Schematic
Schematic
Outline,
SX-1 Running
SX-1 Running
SX-1 Running
SX-1 Running
SX-1
SX-1
SX-1
SX-1
SX-1 Running
SX-1 Running
SX-1 Running
Optional
Block Diagram SX-1 - 839 5695 333
Simplified
Simplified
Simplified
Network
Network •••••
Diagram SX-1
Diagram SX-1
Diagram Power
AC
Controller••••••••••••••••••••••••••••••
Keyboard/Display•••••••••••
Switch
Oscillator
System
Status/Multimeter
Status/Multimeter
Status/Multimeter
Status/Multimeter
PDM
Generator
PDM
Generator
PDM
Amplifier•••••••••••••••••••••••••••••••••••·••••
lkW
PDM
IPA
Board
PA
Module
PA
Module
Phase
Directional
RFI Board (P/N 992 5886 003)
RFI Board (P/N 992 5886 002)
Customer
SX-1
Running
Running
Running
Running
Frequency
...••..............................................
Sheets
Sheets
Sheets
Sheets
Sheets
Sheets
Sheets
Sheets
Sheets
Sheets
Sheets
HV
Power
LV
Power
Control
••••.•.•••.....•..•..•.•••.•..•.•••.•..••••••.•••.
••••••••••••••••••••••••••••••••••
(Sheet 1 of
(Sheet 2 of
Supply
Board
Controller
Filter
Angle
.....••.•••...••.•••......••.•..•.••...•••
Board·•······•····••••····
Board
Board
.•.•.•••..••••.•......•.•••......•..•...
••••••••..••........•.••......•....•.......••
(Sheet 1 of
(Sheet 2 of
Detector
Coupler
Interface
Explanation
-
(Sheet
(Sheet
(Sheet 4 of
(Sheet
(Sheet
(Sheet
(Sheet
(Sheet
(Sheet
(Sheet
Synthesizer••••
Supply
Supply
Circuit
10
11
Diagram - 839 5695 336
Diagram - 839 5695 337
Diagram - 839 5695 338
2)
2)
SX-1
•••••••••••••••••••
Board
(Sheet
(Sheet
(Sheet
(Sheet
(Sheet
(Sheet 2 of
2)
2)
Board•••••••••••••••••••••••
Board••••••••
Board
2
of
11)
3
of
11)
11)
of
of
of
of
of
of
of
11)
11)
11)
11)
11)
11)
11)
5
6
7
8
9
••
••••••••••••
••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••
•
••••••••••••
•
•
••••••••·•••••··•••••••·••
·
•••·••••••••·•••
••••••••••
•••
...............................
1
of
4)
......................
2
of
4)
......
3
•••••••••••••••••·•••••••·••••
•••••
Sheet
4)
of
4
of
1
••••····•••··••··••••·····••··
......................
4)
. .....................
2)
of
2)
•
••••••••••••••
••••••••••••••••••••••••••
•••
•••••••••••••••••••••
(Sheet
...
......
.
...................
.
.....
...
•••••••••••••••••·••
••
1
of
11)
.......
...........
••··
••••••••••
.........
•
.............................
. ............................
.............................
.............................
........................
.....
.............................
.............................
.............................
............................
........................
••••
••••••••••••••
••••••••••••••••••.•••••••••••.
•
•••••••••••
•••·•••••••••••
···
•• ••••••••••
•••••••••••••••
....
8-3
8-5
8-7
8-9
8-11
8-13
8-15
8-17
8-19
8-21
8-23
8-25
8-27
8- 29
·
8-31
8-33
8-35
8-37
8-39
8-41
8-43
8-45
8-47
8-49
8-51
8-53
8-55
8-57
8-59
8-61
8-63
8-65
8-67
8-69
8-71
8-73
8-75
8-77
8-79
8
8-83
6-27
6-27
-81
A-1.
Correction
Factors
WARNING:
..............................................
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888-2126-028
primary
power
prior
to
servicing.
xv/xvi
A-3
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SECTION
I
1-1.
1-2.
1-3.
maintain
manual
INTRODUCTION
SCOPE
This
provide
a.
b.
c.
d.
e .
AND
technical
the
SX-1
SECTION
cal
SECTION
boards
well
SECTION
modes
SECTION
tenance
SECTION
PURPOSE
the
manual
and
as a list
of
as
devices
troubleshooting
GENERAL
manual
AM
TRANSMITTER.
following
I,
GENERAL
contains
types
INFORMATION,
contents.
II,
OPERATION,
other
III,
internally
of
typical
EMERGENCY
operation.
IV,
MAINTENANCE,
well
as
alignment
V,
TROUBLESHOOTING,
in
the
transmitter
procedures.
INFORMATION
information
The
various
of
information.
provides
provides
identification
mounted
readings
OPERATING
provides
procedures.
provides
as
well
necessary
sections
introduction
controls
for
the
SX-1
PROCEDURES,
preventive
a
listing
as
low
of
and
and
AM
provides
and
of
power
to
install
this
technical
to
techni-
functions
indicators
TRANSMITTER.
emergency
corrective
the
protection
and
high
and
of
as
main-
power
f.
SECTION
operation
g.
SECTION
h.
SECTION
nance
i.
APPENDIX
dures
j.
APPENDIX
provided
transmitter.
VII,
of
and
VI,
PRINCIPLES
of
the
PARTS
VIII,
the
A,
DIAGRAMS,
transmitter.
INSTALLATION,
initial
B,
TEST
and
OF
various
LIST,
sections
provides
provides
turn
on
instructions.
EQUIPMENT,
recommended
OPERATION,
of
parts
diagrams
provides
provides
to
perform
provides
the
transmitter.
list
detailed
a
list
detailed
for the
to
aid
in
installation
of
the
test
maintenance
theory
transmitter.
the
mainte-
proce-
equipment
on
of
the
WARNING:
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power
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to
servicing.
1-1/1-2
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www.SteamPoweredRadio.Com
SECTION
OPERATION
II
2-1.
2-2.
tion
sary
controls
section.
2-3.
section
on
to
Figure
Figure
Figure 2-3.
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
Figure
INTRODUCTION
Refer
setup
The
of
front
and
following
the
2-1.
2-2.
2-4
2-5.
2-6.
2-7.
2-8 .
2-9
2-10.
2-11.
2-12.
2-13.
2-14.
2-15.
to
the
panel
and
operate
indicators
IF
MITTER
ONLY
USED.
OF
FULFILL
REPLACEMENT.
technical
Oscillator
System
Status
System
.
PDM
Base
PDM
PDM
AC
.
IPA Board
PA
AC
AC
Rear
Interlock
Optional
Operator's
controls
the
on a board
ANY
OF
REQUIRE
AN
A
THE
SAME
is
a
list
manual.
Controller
and
Controller
Generator
of
SX-1
Amplifier
Filter
Controller
AS
Board
Power
Power
View
Al
Panel
Panel
of
Switches
Frequency
Manual
and
indicators,
transmitter
by
WARNING
THE
FUSES
REPLACING,
EXACT
DIFFERENT
SIZE
THE
Board
Multimeter
Board
and
Transmitter
AND/OR
REQUIREMENT
of
figures
A16
Board
Board
Board
Boards
AlO
Board
IPA Power
Top View
Front
supplied
board
on a
basis
with
along
daily
I
IN
THE
SX-1
ENSURE
REPLACEMENT
MANUFACTURER'S
RATING
FOR
and/
or
Al3
Board
Al5
A6
A25
View
Synthesizer
A12
Al4
and
A7
and
Fuse
Splitter
Showing
transmitter
with
basis.
will
TRANS-
THAT
FUSE
FUSE
DOES
A19F2
NOT
EXACT
tables
Board
information
Information
be
supplied
IS
supplied
A26Al
for
informa-
neces-
in
in
2
-2
2-4
2-6
2-10
2-12
2-14
2-
16
2-18
2-20
2-22
2-24
2-26
2- 28
2-30
2-32
on
this
this
Table
2-
16.
Typical
WARNING:
Readings
888-2126-001
Disconnect pri
mary
power
prior
to
servicing.
2-34
2-1
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_
,,.--..__
Figure
2-2
2-1.
WARNING:
Oscillator
Board
A16,
888-2126-024
Disconnect primary
Controls
power
prior
and
to
servicing.
2126-lA
Indicators
www.SteamPoweredRadio.Com
Table
2-1.
Oscillator
Board
Al6,
Controls
and
Indicators
REF.
1
2
3
4
.5
6
CONTROL/INDICATOR
Frequency
Adjustment
Al6Cl
+30V
FUSE
Al6Fl
Output
Adjustment
Frequency
Level
Al6R27
Monitor
Al6J4
Frequency
Selector,
External
Source
Al6P5
Drive
A16Jl
Adjusts
imately
Protects
within
Adjusts
level.
Output
Counter
lent).
Used
to
lator
or
external
Input
(e.g.
Common
volts
the
~20
the
the
for
(e.g.
select
as
frequency
for
AM
Drive)
p-p.
FUNCTION
carrier
Hz.
+30
volt
oscillator.
oscillator
optional
HARRIS
onboard
source
external
Stereo
.
Nominal
frequency
supply
Frequency
AF-80
crystal
source
(jumper
frequency
Exciter,
from
output
or
(jumper
1-2).
input
approx-
faults
drive
Monitor/
equiva-
oscil-
1-3)
source
Combiner
level
5
WARNING
888-2126-001
:
Disconnect primary
power
prior
to
servicing.
2-3
www.SteamPoweredRadio.Com
Figure
2
-2.
Sy
st
em
Co
n t
ro
lle
r
Boa
r d
Al3,
Co
ntr
o
ls
an
d
Indicators
2-4
WARN
ING:
Disconnect
888- 2126-001
primary
power
orior
to
servic
in
o.
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Table
2-2.
System
Controller
Board
Al3,
Controls
and
Indicators
REF.
1
2
3
CONTROL/INDICATOR
Reset
Controller
Indicator,
Control,
Status
GO,
Al3S1
Al3DS1
Controller
Indicator,
Status
NO
GO
Al3DS2
Depressing
perform
power
pushbutton
LED
comes on.
Glows
GREEN
functioning
Glows
RED
malfunction.
FUNCTION
S1
causes
fail
should
to
normally.
to
indicate
restart.
be
depressed
indicate
Controller
if
Controller
Controller
to
This
RED
WARNING:
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888-2126-001
primary
power
prior
to servicing
2-5
.
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Figure
2-3.
Status
and
Multimeter
Board A12,
2-6 888-2126-026
Con
trols
and
2126-3A
Indicators
WARNING
:
Disconnect primary
power prior
to
serv.icing
.
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Table
2-3.
Status
and
Multimeter
Board
Al2,
Controls
and
Indicators
REF.
1
2
3
4
CONTROL/IND
Local
RF
Overload
Switch
Drive
Level
Adjustment
R56
Final
fier
Overload
Power
Peak
Adjustment
Current
R57
RF
Drive
Minimum
Overload
Level
Amplitude
Adjustment
R58
ICATOR
Control
Ampli-
When
mote
When
remote
Adjusting
sensitivity
Adjusting
creases
Sl
is
control
Sl
is
control
sensitivity
in
in
R56
of
R56
Overload.
Adjusting
sensitivity
Peak
Current
R57
of
counterclockwise
of
Final
Power
Overload.
Adjusting
sensitivity
Amplitude
R58
of
Overload.
counterclockwise
of
RF
Drive
Overload
.
FUNCTION
the
UP
position,
inputs
the
DOWN
inputs
are
clockwise
RF
Drive
counterclockwise
of
clockwise
Final
Overload.
increases
Amplifier
clockwise
RF
Drive
decreases
Level
Minimum
are
disabled.
position,
enabled.
decreases
Level
RF
Overload.
Drive
decreases
Power
Amplifier
Adjusting
sensitivity
Peak
increases
Level
Adjusting
sensitivity
Amplitude
the
rethe
in-
Level
R57
Current
Minimum
R58
5
6
7
A/D
Converter
Calibrate
Adjustment
R59
Forward Power
Calibration
Potentiometer
Reflected
Power
Calibration
Potentiometer
R62
R61
NOTE
The
high
RF
Drive
limits
Adjusting
the
reading
the
adjusted
Calibrates
meter
Calibrates
voltage
-
both
Digital
for
.
level
maximum
R59
seen
Display.
10.00
forward
reflected
will
is
not
not
and
clockwise
on
#/*
on#/*
power
power
come
within
minimum.
will
52
display
R59
should
52
display.
on
on
on
if
preset
deerease
on
be
power
power
meter.
888-2126-026 2-7
WARNING:
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power
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servicing
.
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Table
2-3.
Controls
Status
and
Multimeter
and
Indicators
Board A12,
(Continued)
REF.
8
9
11
12
13
CONTROL/INDICATOR FUNCTION
PA
Current
Calibrates
CURRENT
PA
meter.
Calibration
Potentiometer
Voltage
PA
R60
Calibrates
VOLTAGE
PA
meter.
Calibration
Potentiometer
Adjustment
Antenna
VSWR
Adjustment
Module
PA
Overload
R53
R63
R52
R51
VSWR
Adjustment
function
No
Adjusting
sensitivity
justing
sensitivity
Adjusting
sensitivity
Adjusting
creases
this
at
R51
VSWR
of
counterclockwise
R51
VSWR
of
R53
PA
of
R53
counterclockwise
sensitivity
time.
clockwise
Overload.
clockwise
Module
of
load.
Supply
Current
Overload
R54
Adjustment
Adjusting
sensitivity
Current
R54
of
Overload.
counterclockwise
Power
VDC
260
of
clockwise
VDC
260
increases
Suppl
load.
Spare.
decreases
Overload.
increases
decreases
Overload.
Module
PA
decreases
Power
Adjusting
sensi
Current
y
Ad-
in-
Over-
Supply
R54
ty
vi
ti
Over-
14
Supply
Overload
R55
Voltage
Adjustment
Adjusting
sensitivit
Voltage
counterclockwise
VDC
260
of
load.
2-8 888-2126-026
er
pow
y
WARNING:
Disconnect
primar
R55
260
of
y
Overload.
Power
servicing
to
prior
clockwise
VDC
Adjusting
increases
Supply
.
decreases
Power
sensitivity
Voltage
Supply
R55
Over-
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