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ZX5000
Harris ZX5000 User Manual
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5-42
888-2595-001
12/20/11
WARNING: Disconnect
primar
y power prior to serv
icing.
Section 5 Maintenance and Alignments
ZX Series
5.5.22
2.5 kW RF Load
•
No user adjustments.
•
V
isually inspect new unit
for physical integrity
.
•
Check input resistance with
multimeter
. Resistance should be between 45
ohms and 55 ohms.
•
Thoroughly allow old load to cool dow
n before attempting to replace it.
145
147
Table of Contents
Table of Contents
15
Manual Contents
19
Features / Benefits
20
General Product Description
21
Exciter
21
Amplifier
22
Transmitter Nomenclature
22
Tri-Mode Operation
23
ZX Transmitter General Construction
23
Simplified Block Diagrams
26
Major Subassemblies
31
Transmitter Accessories
36
Customized Rack Integration
36
AC Distribution & Signal Monitor Chassis
36
Directional Coupler or Wattmeter
36
Dual-Drive / Main-Alternate Switcher
37
Section 1 Introduction
38
Specifications
38
Field Services
45
Installation
45
Commissioning
46
Unpacking
46
Returns and Exchanges
46
Transmitter Documentation
46
Installation and Outline Drawings
47
Site Selection
47
AC Mains Requirements
48
Transmitters with AC Distribution Chassis
48
Transmitters Without AC Distribution Chassis
49
Surge Suppression Devices
51
Ground Requirements
51
Overview of RF Grounding Practices
52
Cooling System Requirements
53
Personnel and Equipment Protection
55
Safety Circuits
55
Remote Control Installation
56
Exciter Connections
61
System Bus Connections
64
Initial Start-Up Procedure
64
Operation
69
Introduction
69
Controls and Indicators
69
Front Panel
69
Controller Board
71
Internal Leds
74
System Metering Assembly
75
Basic Operational Procedures
76
ON/OFF Procedure
76
Power Raise/Lower Procedure
77
Switch Operating Mode Procedure (Flexstar HDX Exciter)
77
Basic Functional Check Procedure
78
Theory of Operation
81
Introduction
81
RF Interconnect Wiring Diagram
81
Output Assembly
82
AC-DC Interconnect Wiring Diagram
84
PA Backplane
85
PA Reverse Power Alarm
85
PA Temperature Alarm
86
PA Current Alarm
86
Socket Interlock Module Fault Sensor
87
IPA Backplane
87
I/O Filter PCB
88
PS Interface PCB
89
Fan Monitor PCB
90
Load PCB
91
Pa, Iboc Pcb
91
Transmitter Controller PCB
92
On/Off Control
92
Auto Restart
93
APC Circuit and Power Level Adjust
94
Operating Mode and Bias Level Control
96
Metering
97
Fault and Status Signaling
99
Load Temperature Fault Sensor
100
Ambient Temperature Sensor
100
Drain Voltage Adjust
100
System Metering Assembly
100
System Interconnect
101
Command Sharing
101
Power Control Sharing
103
Maintenance and Alignments
105
Introduction
105
General Maintenance Guidelines
106
Personnel Training
106
Recommended Tools and Equipment
107
Spares Holding
109
Safety Precautions
109
Transmitter Logbook
110
Maintenance Logbook
110
Routine Maintenance
111
MTBF Estimates
111
Basic Maintenance Procedures
112
Power Amplifier (PA) Module Swap
112
Procedure
113
Power Supply (PS) Module Swap Procedure
114
Air Filter Replacement Procedure
115
PA Module Cleaning Procedure
116
Advanced Maintenance Procedures
117
Advanced Functional Check
117
Forward Power Meter Calibration
120
Precision Directional Coupler
121
Reverse Power Meter Calibration
122
Set Transmitter Power Level (Case 1: Internal Transmitter APC Control)
123
Set Transmitter Power Level (Case 2: Exciter APC Control with Flexstar HDX)
125
APC Setup for Multiple PA Chassis
127
Set User Reverse Power Foldback Threshold (ZX2500 / ZX3750 / ZX5000)
128
Set User Reverse Power Foldback Threshold (ZX7.5, ZX10)
129
Periodic Cleaning and Inspection
130
Service One PA Chassis While Transmitter Is on Air (ZX7.5/ZX10)
132
Service One PA Chassis While Transmitter Is Appendix A - FM Web Remote
132
Check Balance by Disconnecting Load (ZX7.5/ZX10)
132
Special Part Replacement Notes
134
PA Module (992-9992-041G or Otherwise)
134
PA Amplifier Assembly (PWA, PA)
134
PS Module (736-0445-000)
136
Transmitter Controller PCB (901-0203-541)
137
PA Backplane PCB (901-0203-381)
137
IPA Backplane PCB (901-0203-581)
137
PS Interface PCB (901-0203-531)
137
RF Output Assembly (971-0023-026/027/028)
138
Output Assembly Ballast Load (700-1225-000)
142
RF Splitter (901-0203-511/561/571)
143
I/O Filter PCB (901-0203-551)
144
Web Remote PCB (901-0203-391T)
144
Fan Monitor PCB (901-0203-441)
144
Cooling Fans (430-0458-000)
144
Front Panel Multimeter (632-1201-000)
144
AC Mains Filter (476-0528-000 or 609-0125-000)
145
Front Panel Filter (943-5567-408)
145
IPA Splitter (901-0203-591)
145
Input 3Db Attenuator (971-0023-050)
145
System Metering Assembly
145
Output Combiner (3Db Hybrid)
145
Kw RF Load
146
Troubleshooting
147
Contacting Harris Service
147
Troubleshooting Table
148
Parts List
163
ZX5000 Replaceable Parts List
164
ZX10 Replaceable Parts List
169
Appendix A - FM Web Remote Option
175
Introduction
175
General Product Description
175
Installation
177
Internet Security
177
Installation Procedure
178
Operation
179
Access Main Page
179
Theory of Operation
185
Maintenance
186
Access Configuration Page
186
Configuration Settings
189
Perform Simple Reset
191
Perform Expert Reset
192
Change Clock Battery
193
Calibrate Clock Speed
193
Use Microchip Discoverer Utility
194
Troubleshooting
195
USB Flash Drive
196
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Harris ZX5000 Specifications
General
Brand
Harris
Model
ZX5000
Category
Transmitter
Language
English
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