Sony BKMA-720 User manual

HDCAM INPUT BOARD
BKMA-720
INSTALLATION MANUAL
1st Edition
Serial No. 10001 and Higher

!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.
BKMA-720

1 (E)
BKMA-720
Table of Contents
Manual Structure
Purpose of this manual ........................................................................................ 3 (E)
Related manuals................................................................................................... 3 (E)
Contents ............................................................................................................... 3 (E)
1. Installation
1-1. Overview ............................................................................................... 1-1 (E)
1-2. Board Installation .................................................................................. 1-2 (E)
1-2-1. In the Case of 2-IN and 2-OUT ............................................ 1-2 (E)
1-2-2. In the Case of 3-IN and 1-OUT ............................................ 1-5 (E)
2. Service Overview
2-1. Description of Internal Switches and Indicators ................................... 2-1 (E)
2-1-1. ENC-72 Board ...................................................................... 2-1 (E)
2-2. Specifications ........................................................................................ 2-3 (E)

3 (E)
BKMA-720
Manual Structure
Purpose of this manual
This manual is the installation manual of the BKMA-720 HDCAM input board.
This manual is intended for use by trained system and service engineers, and
describes the information regarding installation.
Related manuals
Besides this Installation Manual, the following manuals are available for the
BKMA-720.
..
..
.MAV-777 Maintenance Manual (Available on request)
This manual describes the information that premises the service based on parts
replacement (maintenance functions, parts replacement, electrical alignment, and
circuit descriptions, parts list, block diagrams, etc.).
If this manual is required, please contact your local Sony Sales Office/Service
Center.
Contents
The following is a summary of all the section for understanding the contents of this
manual.
Section 1 Installation
Explains the overview of the BKMA-720, how to install the BKMA-720 to the
MAV-777.
Section 2 Service Overview
Explains the internal switches and indicators, specifications of the BKMA-720.

1-1 (E)
BKMA-720
Section 1
Installation
1-1. Overview
The HDCAM input board BKMA-720 can expand the number of input and output ports of the multi-
access video disk recorder MAV-777 to 3-IN and 1-OUT by installing the 2 pieces of the BKMA-720.
When one piece of the BKMA-730 and another piece of the BKMA-720 are installed, the number of
input and output ports of the multi-access video disk recorder MAV-777 can be expanded to 2-IN and 2-
OUT.
The ENC-72 board processes the 2 channels of the video/audio input signals.
The BKMA-720 consists of the following:
.BKMA-720 main unit
.Harness 2 pcs
.Installation manual
.Operation guide

1-2 (E) BKMA-720
Top panel
Screws (with drop-safe)
Power supply unit
Slot No. 1
Slot No. 11
Main board retainer
Screw (with drop-safe)
Screw
(with drop-safe)
A
Cover
Harness
Tie band
Bend
DEC-136 board
Slot No. 6
CN1502 (6 Blue)
CN1501 (13 Black)
CN202 (7)
CN200 (8)
4. Pull the harnesses out that are housed in the slots Nos.
5 and 6.
5. While bending the shaded portion of the cover as
shown in the illustration inside, remove the harnesses
in the direction of arrow A from the slot.
6. Cut the tie band that bundles the harness.
7. Insert the DEC-136 board in the slot No. 6.
8. Connect the four harnesses as shown in the following
table among the harnesses that are removed in step 4,
to the DEC-136 board so that the colors and the
numbers indicated match with the harness colors and
numbers on the board.
Board connector Indication of the harness
(Cap color)
CN1501 13 (Black)
CN1502 6 (Blue)
CN200 8 (_)
CN202 7 (_)
1-2. Board Installation
n
The slot that is nearest to the power supply unit is assigned
as the slot No. 1. In the MAV-777, the PU-109 board is
inserted in the slot No. 1. The slots are assigned starting
from No. 1 up to No. 13 in this order.
1-2-1. In the Case of 2-IN and 2-OUT
n
Add one piece of the BKMA-720 board (ENC-72 board)
and one piece of the BKMA-730 board (DEC-136 board)
respectively.
1. Turn off the power of the MAV-777.
2. Loosen the two screws (with drop-safe), and remove
the top panel.
3. Loosen the two screws (with drop-safe), and remove
the main board retainer.
1-2. Board Installation

1-3 (E)
BKMA-720
12. While closing the board levers in the direction of
arrow 1, push in the circuit board deep into the end
of the slot securely.
n
Be careful not to pinch the harnesses between the board le-
ver and the board. If it is pinched, it may cause open circuit.
13. While opening the connector clamp with finger by
pushing it in the direction of the arrow, connect the
two harnesses that are supplied with the BKMA-720,
to the EM-4 board and to the DEC-136 board in the
slot No. 6 referring to the illustration below.
m
.Insert the connectors of the harnesses into the board
connectors in the way that the metallic side of the
harness connectors are facing the circuit boards.
.After the harnesses are connected, push the connector
clamps that are opened before, with finger until the
connectors of the supplied harnesses are hidden.
11
DEC-136 board
Slot No. 6 Board levers
ENC-72 board
Slot No. 5
CN203 (7 Green)
CN202 (3 Amber)
CN1 (5)
CN2 (6)
11
ENC-72 board
Slot No. 5 Board levers
Connector
clamp
Slot No. 6
DEC-136 board
EM-4 board
Supplied harness
Supplied harness
Black
Red
9. While closing the board levers in the direction of
arrow 1, push in the circuit board deep into the end
of the slot securely.
n
Be careful not to pinch the harnesses between the
board lever and the board. If it is pinched, it may cause
open circuit.
10. Insert the ENC-72 board in the slot No. 5.
11. Connect the four harnesses as shown in the following
table among the harnesses that are removed in step 4,
to the ENC-72 board so that the colors and the num-
bers indicated match with the harness colors and
numbers on the board.
Board connector Indication of the harness
(Cap color)
CN202 3 (Amber)
CN203 7 (Green)
CN1 5 (_)
CN2 6 (_)
1-2. Board Installation

1-4 (E) BKMA-720
14. While opening the connector clamps with finger by
pushing it in the direction of the arrow, connect the
two harnesses that are supplied with the BKMA-720,
to the EM-4 board and to the ENC-72 board in the slot
No. 5 referring to the illustration below.
m
.Insert the connectors of the harnesses into the board
connectors in the way that the metallic side of the
harness connectors are facing the circuit boards.
.After the harnesses are connected, push the connector
clamps that are opened before, with finger until the
connectors of the supplied harnesses are hidden.
15. Secure the harnesses using the wire clamp of the board.
(1) Secure the harnesses coming from the DEC-136 board
and the ENC-72 board in a way that the harnesses
cross each other, with the wire clamp (one clamp) on
the EM-4 board in the slot No. 10.
Connector
clamp
Slot No. 5
EM-4 board
ENC-72 board
Supplied harness
Supplied harness
Red
Black
1-2. Board Installation
(2) Secure the harnesses coming from the EM-4 board
with the three wire clamps on the DEC-136 board in
the slot No. 6. When securing the harnesses, fix the
center wire clamp in the direction shown by the
illustration in order to avoid interference with the main
board retainer.
(3) Secure the harnesses connecting the EM-4 board to the
DEC-136 board in the slot No. 6, with the wire clamp
(one clamp) on the ENC-72 board in the slot No. 8.
When securing the harness, route the harnesses through
the recessed portion of the board up to the board lever A.
(4) Secure the harnesses coming from the EM-4 board with the
two wire clamps on the ENC-72 board in the slot No. 5.
Slot No. 5
(ENC-72 board)
Slot No. 10
(EM-4 board)
Slot No. 6
(DEC-136 board)
Wire clamp
Black
Black
Red
Red
Slot No. 8
(ENC-72 board)
Slot No. 10
(EM-4 board)
Slot No. 6
(DEC-136 board)
Wire clamp
Red
Black
Wire clamp
Wire clamp
(Secure the harness avoiding
projection of the board.)
Wire clamp
Recessed portion
Board lever A
Slot No. 5
(ENC-72 board)
Slot No. 10
(EM-4 board)
Wire clamp
Wire clamp
Red
Black

1-5 (E)
BKMA-720
1-2. Board Installation
16. Confirm that the harnesses that are connected in steps
13 and 14 are firmly inserted into the corresponding
connectors.
17. Attach the main board retainer and the top panel by
reversing the steps 1 to 3.
n
When installing the main board retainer, be careful not
to pinch the harness.
1-2-2. In the Case of 3-IN and 1-OUT
n
Add the two BKMA-720 boards (ENC-72 boards).
1. Insert the ENC-72 board in the slots No. 5 and No. 6
referring to steps 1 to 6 of 1-2-1. “In the Case of 2-IN
and 2-OUT”.
2. Connect the harnesses that are removed in step 4 of 1-
2-1. “In the Case of 2-IN and 2-OUT” to the ENC-72
board so that the colors and the numbers of the
harnesses match with the harness colors and numbers
on the board.
3. Connect the harnesses to the ENC-72 boards in the slot
No. 5 referring to step 11 of 1-2-1. “In the Case of 2-
IN and 2-OUT”.
Board connector Indication of the harness
(Cap color)
CN202 13 (Black)
CN203 6 (Blue)
CN1 8 (_)
CN2 7 (_)
ENC-72 board
Slot No. 6
CN203 (6 Blue)
CN202 (13 Black)
CN2 (7)
CN1 (8)
11
ENC-72 board
Slot No. 6 Board levers
4. While closing the board levers in the direction of
arrow 1, push in the circuit board deep into the end
of the slot securely.
n
Be careful not to pinch the harnesses between the
board lever and the board. If it is pinched, it may cause
open circuit.

1-6 (E) BKMA-720
1-2. Board Installation
Connector
clamp
ENC-72 board
Slot No. 6
EM-4 board
Supplied harness
Supplied harness
Black
Red
7. While opening the connector clamps with finger by
pushing it in the direction of the arrow, connect the
two supplied harnesses to the EM-4 board and to the
ENC-72 board in the slot No. 5 referring to the
illustration.
m
.Insert the connectors of the harnesses into the board
connectors in the way that the metallic side of the
harness connectors are facing the circuit boards.
.After the harnesses are connected, push the connector
clamps that are opened before, with finger until the
connectors of the supplied harnesses are hidden.
8. Secure the harnesses using the wire clamp of the
board.
(1) Secure the harnesses coming from the ENC-72 board
in slot No. 5 and slot No. 6 in a way that the harnesses
cross each other, with the wire clamp (one clamp) on
the EM-4 board in the slot No. 10.
Connector
clamp
Slot No. 5
EM-4 board
ENC-72 board
Supplied harness
Supplied harness
Red
Black
Slot No. 6
(DEC-136 board)
Slot No. 5
(ENC-72 board)
Slot No. 10
(EM-4 board)
Wire clamp
Black
Black
Red
Red
5. Install the respective circuit boards into the deep end
of the slots referring to steps 9 to 12 of 1-2-1. “In the
Case of 2-IN and 2-OUT”.
6. While opening the connector clamps with finger by
pushing it in the direction of the arrow, connect the
two supplied harnesses to the EM-4 board and to the
ENC-72 board in the slot No. 6 referring to the
illustration.
m
.Insert the connectors of the harnesses into the board
connectors in the way that the metallic side of the
harness connectors are facing the circuit boards.
.After the harnesses are connected, push the connector
clamps that are opened before, with finger until the
connectors of the supplied harnesses are hidden.

1-7 (E)
BKMA-720
1-2. Board Installation
(2) Secure the harnesses coming from the EM-4 board
with the two wire clamps on the ENC-72 board in the
slot No. 6.
(3) Secure the harnesses connecting the EM-4 board with
the ENC-72 board in the slot No. 6, with the wire
clamp (one clamp) on the ENC-72 board in the slot
No. 8.
When securing the harnesses, route the harnesses
through the recessed portion of the board up to the board
lever A.
(4) Secure the harnesses coming from the EM-4 board
with the two wire clamps on the ENC-72 board in the
slot No. 5.
Slot No. 6
(ENC-72 board) Slot No. 8
(ENC-72 board)
Slot No. 10
(EM-4 board)
Wire clamp
Wire clamp
Wire clamp
Recessed portion
Board lever A
Red
Black
9. Confirm that the harnesses that are connected in steps
6 and 7 are firmly inserted into the mating connectors.
10. Remove the two screws from the rear panel, and attach
the sub panel (option) of the 3-IN and 1-OUT that is
supplied with the MAV-777.
Sub panel of
the 3-IN and 1-OUT
B3 x6
B3 x6
R2 (panel display)
R3 (panel display)
Slot No. 5
(ENC-72 board)
Slot No. 10
(EM-4 board)
Wire clamp
Wire clamp
Red
Black

2-1 (E)
BKMA-720
Section 2
Service Overview
2-1. Description of Internal Switches and Indicators
2-1-1. ENC-72 Board
ABCDEFG
HJK
1
2
3
4
5
6
S504 S503 S502 S501
S1801
D1601
S1301
D1004
D1003
D1002
D1001
D905
D901
D902
D903
D904
D1005
Side A (Component side)
Switches
Ref. No. Address Name Function Factory setting
S501 (J-1) _Setting switch of IC501
S502 (J-1) _Setting is not necessary in normal operation.
S501-1 to 4 : All OFF
S502-1 to 4 : All OFF
S503 (J-1) _Setting switch of IC503
S504 (H-1) _Setting is not necessary in normal operation.
S503-1 to 4 : All OFF
S504-1 to 4 : All OFF
S1301 (B-1) _Sets up the JTAG system connection line of
IC901, IC1001 and IC1308.
Use this switch in the factory setting (see below.).
S1301-1 to 4 : ON
S1301-5 to 7 : OFF
S1301-8 : ON (Enable of the EPR connector)
S1801 (J-1) Reset switch Initializes the ENC-72 board. _
ON
1234
OFF
12345678

2-2 (E) BKMA-720
2-1. Description of Internal Switches and Indicators
LEDs
Ref. No. Address Color Name Function Normal condition
D901 (E-4) Green _Indicates the setup condition of the _
D902 (E-4) Green _O-CPUIF-MODE1 of IC901 register.
D903 (E-4) Green _Turns on : Register bit is low.
D904 (E-4) Green _Turns off : Register bit is high.
D901 : Bit0 (LSB)
D902 : Bit1
D903 : Bit2
D904 : Bit3
D905 (E-4) Green INIT_DONE Turns on during downloading data to IC901. Turns off
Turns off when downloading is complete.
When downloaded error occurs :
Keeps turned on.
D1005 (F-3) Green INIT_DONE Turns on during downloading data to IC1001. Turns off
Turns off when downloading is complete.
When downloaded error occurs :
Keeps turned on.
D1001 (F-3) Green RX_FR Flashes : Normal Flashes
Flashes once every 0.5 seconds
when the frame signal from the
RX-46 board is the normal signal.
Turns off : When the frame signal and the
clock signal from the RX-46 board
lose synchronization.
Turns on : When the frame signal and the
clock signal from the RX-46 board
lose synchronization.
D1002 (F-3) Green HIF_FR Flashes : Normal Flashes
Flashes once every 0.5 seconds
when the frame signal from the
HIF-4 board is the normal signal.
Turns off : When the frame signal and the
clock signal from the HIF-4 board
lose synchronization.
Turns on : When the frame signal and the
clock signal from the HIF-4 board
lose synchronization.
D1003 (F-3) Green _For test Turns off
D1004 (F-3) Green _For test Turns off
D1601 (B-1) Green INIT_DONE IC1401 configuration error display Turns on
Turns on : Configuration ends normally
Turns off : Configuration error occurs

2-3 (E)
BKMA-720
2-2. Specifications
BKMA-720
General
Operating temperature +5 dC to +40 dC
Storage temperature _20 dC to +60 dC
Operating humidity 25% to 80%
External dimensions 294 x20 x222.6 (w/d/h) (not including protrusions)
(11 9/16 x13/16 x8 3/4inches)
Mass Approx. 0.5 kg (1 lb 1 1/2oz)
2-2. Specifications

BKMA-720
The material contained in this manual consists of
information that is the property of Sony Corporation and
is intended solely for use by the purchasers of the
equipment described in this manual.
Sony Corporation expressly prohibits the duplication of
any portion of this manual or the use thereof for any
purpose other than the operation or maintenance of the
equipment described in this manual without the express
written permission of Sony Corporation.
Le matériel contenu dans ce manuel consiste en
informations qui sont la propriété de Sony Corporation et
sont destinées exclusivement à l’usage des acquéreurs
de l’équipement décrit dans ce manuel.
Sony Corporation interdit formellement la copie de
quelque partie que ce soit de ce manuel ou son emploi
pour tout autre but que des opérations ou entretiens de
l’équipement à moins d’une permission écrite de Sony
Corporation.
Das in dieser Anleitung enthaltene Material besteht aus
Informationen, die Eigentum der Sony Corporation sind,
und ausschließlich zum Gebrauch durch den Käufer der
in dieser Anleitung beschriebenen Ausrüstung bestimmt
sind.
Die Sony Corporation untersagt ausdrücklich die
Vervielfältigung jeglicher Teile dieser Anleitung oder den
Gebrauch derselben für irgendeinen anderen Zweck als
die Bedienung oder Wartung der in dieser Anleitung
beschriebenen Ausrüstung ohne ausdrückliche
schriftliche Erlaubnis der Sony Corporation.

Printed in Japan
Sony Corporation 2001. 11 16
B&P Company ©2001
BKMA-720 (SY) J, E
3-206-414-01