3
CCU-TX7 (E)/V1
TABLE OF CONTENTS
1.
OPERATING INSTRUCTIONS
1-1. CCU-TX7/TX7P ............................................................................................ 1-1
1-2. DXBK-701 ................................................................................................... 1-13
2.
INSTALLATION
2-1. CONNECTORS AND CABLES ................................................................... 2-1
2-1-1.
Connector Input/Output Signals ............................................................. 2-1
2-1-2.
Connection Connector ............................................................................ 2-4
2-1-3.
Wiring Diagram for Cable ...................................................................... 2-4
2-2. MAKING OF WF MODE CONNECTOR .................................................... 2-4
2-3. COAX CONNECTOR ................................................................................... 2-5
2-4. OPERATING ENVIRONMENT ................................................................... 2-5
2-5. MOUNTING ON 19-INCH RACK ............................................................... 2-6
2-6. SWITCH FUNCTIONS ON BOARD ........................................................... 2-7
3.
SERVICE INFORMATION
3-1. BOARD LAYOUT ......................................................................................... 3-1
3-2. DISASSEMBLY/INSTALLATION OF MAIN PART ................................. 3-1
3-2-1.
Removal of Cabinet ................................................................................ 3-1
3-2-2.
Replacement of Switching Regulator ..................................................... 3-2
3-2-3.
Replacement of Fan ................................................................................ 3-3
3-2-4.
Removal of COU-TX7 ........................................................................... 3-3
3-3. CIRCUIT DESCRIPTION ............................................................................. 3-4
CT-181 board ....................................................................................................... 3-4
AA-90 board ........................................................................................................ 3-4
YD-26 board ........................................................................................................ 3-4
ES-20 board .......................................................................................................... 3-4
AU-234 board ...................................................................................................... 3-4
IO-140 board ........................................................................................................ 3-4
SDI-44 board (DXBK-701) ................................................................................. 3-4
3-4. EXTENSION OF DXBK-701 (SDI-44 BOARD) ......................................... 3-5
4.
ADJUSTMENT
4-1. PREPARATION ............................................................................................ 4-1
4-1-1.
Equipment Required ............................................................................... 4-1
4-1-2.
Fixture ..................................................................................................... 4-1
4-1-3.
Notes on Adjustment .............................................................................. 4-1
4-1-4.
Switch settings ........................................................................................ 4-1
4-1-5.
Connections ............................................................................................ 4-2
4-2. VIDEO SIGNAL SYSTEM ADJUSTMENT ................................................ 4-3
4-2-1.
Sub-carrier Frequency Check ................................................................. 4-3
4-2-2.
CAM H Phase Adjustment ..................................................................... 4-3
4-2-3.
H Phase Adjustment ............................................................................... 4-4
