User's Manual
Table Of Contents
- Front Cover
- Contents
- 1 - Foreword 11
- 2 - Safety and General Information 21
- 3 - Introduction 31
- 4 - System Applications 41
- 5 - Models and Specifications 51
- 6 - Approved Accessories 61
- 7 - Setup and Connections 71
- 8 - Operation 81
- 9 - Troubleshooting 91
- Introduction 91
- Recommended Test Equipment 91
- Troubleshooting Procedures 91
- Module Replacement Procedures 925
- General Replacement Information 925
- Anti-Static Precaution 925
- Care of Gold-Plated Connector Contacts 926
- Power Down Station Before Removing/Inserting Modules 926
- Validating Repairs 926
- Module Replacement 926
- Wireline 928
- ASTRO Modem Card/V.24 Interface Card 929
- Receiver 929
- Exciter 931
- Power Amplifier 932
- Power Supply 933
- Backplane 934
- Preselector Field Tuning Procedure 935
- 10 - Functional Theory of Operation 101
- 11 - Block Diagram, Schematics, Electrical Parts List, and Circuit Board Detail 111
- List of Tables
- List of Figures
- Parts Lists
- Foreword
- Safety and General Information
- Introduction
- System Applications
- Models and Specifications
- Approved Accessories
- Setup and Connections
- Operation
- Troubleshooting
- Introduction
- Recommended Test Equipment
- Troubleshooting Procedures
- Module Replacement Procedures
- Preselector Field Tuning Procedure
- Functional Theory of Operation
- Schematics
- Back Cover
68P81093C75-O November 30, 2000 9-29
• Two-wire/four-wire select jumper
• DC remote control selection jumpers
6. Insert the new module. Make sure it is in the cardguides; push it
firmly into the chassis until it seats into the card-edge
connectors on the backplane. (Do not slam the board against the
backplane or push any harder than necessary to seat the
connectors.)
7. If desired, power up the station while it is still out of the case to
make sure the module is securely in place. The LEDs on the
Wireline should blink rapidly, indicating that firmware is
transferring from the SCM to the Wireline Module. When the
blinking stops, the transfer is complete.
If any of the LEDs do not light or are dim, one or more of the
modules are not seated properly. Unplug the station before
continuing to the next step.
8. Reassemble the station by reversing Steps 2 and 3.
After Installing the New
Wireline Module
Perform the following alignment procedures as described in the RSS
User’s Guide (part number 68P81085E35):
• Rx Wireline
• Tx Wireline
ASTRO Modem Card/
V.24 Interface Card
Physical Replacement of
the Card
1. Remove the Wireline Module as described above.
2. Unplug the faulty ASTRO Modem Card or the V.24 Interface
Card from the Wireline board by pressing the mounting posts
through the back of the board.
Install the replacement card by pressing it onto the Wireline board
and locking all mounting posts and connectors.
3. Re-install the Wireline Module as described above.
After Installing the New
Card
No alignments or adjustments are required. The card is configured
by the Station Control Module on power-up.
Receiver
Physical Replacement of
the Receiver Module
1. Turn off the station’s power by unplugging the AC and DC
power cords from the top panel.
2. Remove the eight Phillips screws from the edges of the station’s
top panel and lift the chassis out of the case.