Sony CCU-TX7 User manual

CAMERA CONTROL UNIT
CCU-TX7
CCU-TX7P
CAMERA OPERATION UNIT
COU-TX7
SDI OUTPUT BOARD
DXBK-701
SERVICE MANUAL
Volume 1 1st Edition (Revised 2)

CCU-TX7 (E)/V1
!WARNING
This manual is intended for qualified service personnel only.
To reduce the risk of electric shock, fire or injury, do not perform any servicing other than that
contained in the operating instructions unless you are qualified to do so. Refer all servicing to
qualified service personnel.
!WARNUNG
Die Anleitung ist nur für qualifiziertes Fachpersonal bestimmt.
Alle Wartungsarbeiten dürfen nur von qualifiziertem Fachpersonal ausgeführt werden. Um die
Gefahr eines elektrischen Schlages, Feuergefahr und Verletzungen zu vermeiden, sind bei
Wartungsarbeiten strikt die Angaben in der Anleitung zu befolgen. Andere als die angegeben
Wartungsarbeiten dürfen nur von Personen ausgeführt werden, die eine spezielle Befähigung
dazu besitzen.
!AVERTISSEMENT
Ce manual est destiné uniquement aux personnes compétentes en charge de l’entretien. Afin
de réduire les risques de décharge électrique, d’incendie ou de blessure n’effectuer que les
réparations indiquées dans le mode d’emploi à moins d’être qualifié pour en effectuer d’autres.
Pour toute réparation faire appel à une personne compétente uniquement.

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CCU-TX7 (E)/V1
MANUAL STRUCTURE
Purpose of this manual
Related manuals
This manual is the Service Manual Vol. 1 of the CAMERA CONTROL UNIT CCU-TX7
(for NTSC) and CCU-TX7P(for PAL), CAMERAOPERATION UNIT COU-TX7 and SDI
OUTPUT BOARD DXBK-701.
This manual contains the operation manual related to the operations of this equipment,
the replacement of the parts and adjustments.
In addition to this Service Manual Vol. 1, the following manual is provided.
..
..
.Service Manual Vol. 2
Part No. 9-977-286-23
Containssemiconductor pin assignments, parts lists, block diagrams, board illustrations
and schematic diagrams.

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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

4CCU-TX7 (E)/V1
4-2-4. SYNC Phase Adjustment ....................................................................... 4-4
4-2-5. INT SC Phase Adjustment......................................................................4-5
4-2-6. Y CLAMP Adjustment........................................................................... 4-5
4-2-7. Y OUT (COMP) Level Adjustment ....................................................... 4-6
4-2-8. Y OUT (VBS) Level Adjustment..........................................................4-6
4-2-9. R-Y/B-Y White Black Balance Adjustment...........................................4-7
4-2-10. G Level Adjustment ............................................................................... 4-7
4-2-11. R Level Adjustment................................................................................ 4-8
4-2-12. B Level Adjustment................................................................................ 4-8
4-2-13. WF OUT R/B DC OFFSET Adjustment................................................ 4-9
4-2-14. Carrier Balance Adjustment ................................................................... 4-9
4-2-15. Color Vector Adjustment ..................................................................... 4-10
4-2-16. R-Y/B-Y OUT Level Adjustment ........................................................4-10
4-2-17. VBS OUT Level Adjustment ...............................................................4-11
4-2-18. STAIR CASE Adjustment....................................................................4-11
4-2-19. WIDE ID Level Adjustment................................................................. 4-12
4-3. Y CABLE COMPENSATION SYSTEM ADJUSTMENT......................... 4-13
4-3-1. SYNC SEP Adjustment........................................................................4-13
4-3-2. BLACK Pulse Width Adjustment ........................................................ 4-13
4-3-3. SYNC Sample Hold Pulse Width Adjustment .....................................4-14
4-3-4. 22.5 MHz VCO DC Set Adjustment ....................................................4-14
4-3-5. Sample Pulse Width Adjustment.......................................................... 4-15
4-3-6. Sample Pulse V Gate Width Adjustment .............................................4-15
4-3-7. 22.5 MHz Carrier Level Adjustment.................................................... 4-16
4-3-8. Y DEMOD Carrier Balance Adjustment.............................................. 4-16
4-3-9. Y OFFSET Adjustment ........................................................................4-17
4-3-10. Y 90˚ Adjustment ................................................................................. 4-17
4-3-11. Y 1st AGC Adjustment ........................................................................ 4-17
4-3-12. Y Output Level Adjustment .................................................................4-18
4-4. CHROMA CABLE COMPENSATION SYSTEM ADJUSTMENT ..........4-18
4-4-1. 45 MHz Carrier Level Adjustment....................................................... 4-18
4-4-2. C PLL Set Adjustment..........................................................................4-19
4-4-3. B-Y DEMOD Carrier Balance Adjustment.......................................... 4-19
4-4-4. B-Y Crosstalk Adjustment ................................................................... 4-20
4-4-5. C 1st AGC Adjustment......................................................................... 4-20
4-4-6. B-Y OUT Level Adjustment ................................................................ 4-21
4-4-7. R-Y DEMOD Carrier Balance Adjustment.......................................... 4-21
4-4-8. R-Y Crosstalk Adjustment ................................................................... 4-22
4-4-9. R-Y OUT Level Adjustment ................................................................ 4-22
4-5. RETURN VIDEO CABLE COMPENSATION SYSTEM
ADJUSTMENT............................................................................................4-23
4-5-1. Return Video Carrier Frequency Adjustment.......................................4-23
4-5-2. Return Video Deviation Adjustment ....................................................4-23
4-6. PROMPT VIDEO CABLE COMPENSATION SYSTEM
ADJUSTMENT............................................................................................4-24
4-6-1. TX PROMPT VIDEO Demodulation Adjustment............................... 4-24
4-6-2. RX PROMPT VIDEO Demod. Adjustment......................................... 4-25
4-6-3. RX PROMPT VIDEO RF AGC Adjustment .......................................4-26
4-6-4. RX PROMPT VIDEO Level Adjustment ............................................4-27

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CCU-TX7 (E)/V1
4-7. TRIAX INTERFACE SYSTEM ADJUSTMENT.......................................4-27
4-7-1. Frequency Set Adjustment ................................................................... 4-27
4-7-2. INCOM Deviation Adjustment ............................................................4-28
4-7-3. PGM Deviation Adjustment .................................................................4-28
4-7-4. INCOM Demodulation Adjustment ..................................................... 4-29
4-7-5. INCOM Level Adjustment ...................................................................4-29
4-7-6. MIC 1 Demodulation Adjustment ........................................................4-30
4-7-7. MIC 1 Level Adjustment......................................................................4-30
4-7-8. MIC 2 Demodulation Adjustment ........................................................4-31
4-7-9. MIC 2 Level Adjustment......................................................................4-31
4-7-10. CAM DATA Demodulation Adjustment .............................................4-32
4-7-11. CAM TONE Adjustment...................................................................... 4-32

1-1
CCU-TX7 (E)/V1
1997 by Sony Corporation
Operating Instructions
Before operating the unit, please read this manual
thoroughly and retain it for future reference.
Camera Control
Unit
3-859-845-12(1)
CCU-TX7/TX7P
SECTION 1
OPERATING INSTRUCTIONS
1-1. CCU-TX7/TX7P

1-2 CCU-TX7 (E)/V1
3
Table of Contents
Overview ............................................................................ 4
Product Features .................................................................. 4
Connections ......................................................................... 5
Installing the Camera Operation Unit ................................. 7
Location and Function of Parts ....................................... 8
Front Panel .......................................................................... 8
Rear Panel ......................................................................... 14
Internal Board Switches and Knobs .................................. 17
Notes on Use ................................................................... 20
Specifications .................................................................. 21
WARNING
To prevent fire or shock hazard, do not
expose the unit to rain or moisture.
This symbol is intended to alert the user to the
presence of uninsulated “dangerous voltage”
within the product’s enclosure that may be of
sufficient magnitude to constitute a risk of
electric shock to persons.
This symbol is intended to alert the user to the
presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the appliance.
Owner’s Record
The model and serial numbers are located at the rear.
Record the serial number in the space provided below.
Refer to these numbers whenever you call upon your Sony
dealer regarding this product.
Model No. Serial No.
For the customers in the USA
This equipment has been tested and found to comply with
the limits for a Class A digital device, pursuant to Part 15 of
the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential
area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own
expense.
You are cautioned that any changes or modifications not
expressly approved in this manual could void your authority
to operate this equipment.
This device requires shielded interface cables to comply with
FCC emission limits.
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