Sony BKM-41HD User manual

HD SDI INPUT ADAPTOR
BKM-41HD
BKM-42HD
INSTALLATION AND MAINTENANCE MANUAL
1st Edition
Serial No. 2000001 and Higher

!WARNING
This manual is intended for qualified service personnel only.
To reduce the risk of electric shock, fire or injuly, 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.

1 (P)
SAFETY CHECK-OUT
After correcting the original service problem, perform the
following safety checks before releasing the set to the customer:
1. Checktheareaofyourrepairforunsolderedorpoorly-soldered
connections.Check theentire boardsurface forsolder splashes
and bridges.
2. Checktheinterboardwiringtoensurethatnowiresare“pinched”
or contact high-wattage resistors.
3. Checkthatallcontrolknobs,shields,covers,groundstraps,and
mounting hardware have been replaced. Be absolutely certain
that you have replaced all the insulators.
4. Lookforunauthorizedreplacementparts,particularlytransistors,
thatwereinstalledduringapreviousrepairPointthemouttothe
customer and recommend their replacement.
5. Look for parts which, though functioning, show obvious signs
ofdeterioration.Pointthemouttothecustomerandrecommend
their replacement.
6. Check the line cord for cracks and abrasion. Recommend the
replacement of any such line cord to the customer.

1
TABLE OF CONTENTS
1. INSTRUCTIONS .................................................................................... 1-1
2. SERVICE INFORMATION
2-1. SDIAssy Removal ....................................................................................... 2-1
2-2. How to Use Tool Assy .................................................................................. 2-1
3. CIRCUIT ADJUSTMENTS
3-1. Preparation ................................................................................................... 3-1
3-2. BHD BoardAdjustment (Analog YPBPR Adjustment) ............................... 3-2
3-3. BHD Board Adjustment (HD SDI Adjustment)........................................... 3-3
4. CIRCUIT DESCRIPTIONS ................................................................ 4-1
5. SEMICONDUCTORS ........................................................................... 7-1
6. EXPLODED VIEW ................................................................................. 6-1
7. ELECTRICAL PARTS LIST ............................................................. 7-1
8. BLOCK DIAGRAM
8-1. BHD (1/2) Block Diagram ........................................................................... 8-1
8-2. BHD (2/2) Block Diagram ........................................................................... 8-2
9. DIAGRAM
9-1. Printed Wiring Board ................................................................................... 9-1
9-2. Schematic Diagram ...................................................................................... 9-5

1-1
SECTION 1
INSTRUCTIONS This section is extracted from
installation manual.
HD SDI Input Adaptor
BKM-41HD
BKM-42HD
INSTALLATION MANUAL
[English]
1st Edition
Serial No. 2100001 and Higher
6(E)
For 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.
The shielded interface cable recommended in this manual
must be used with this equipment in order to comply with the
limits for a digital device pursuant to Subpart B of Part 15 of
FCC Rules.
For customers in Canada
This Class A digital apparatus meets all requirements of the
Canadian Interference-Causing Equipment Regulations.
Pour les utilisateurs au Canada
Cet appareil numérique de la classe A respecte toutes les
exigences du Règlement sur le matériel brouilleur du
Canada.
English

1-2
1(E)
Table of Contents
BKM-41HD/42HD HD SDI Input Adaptors ................. 2(E)
Functions..................................................................... 2(E)
Using the Input and Output Connectors ..................... 2(E)
Specifications .............................................................. 3(E)
Installing into Video Monitors ........................................ 4(E)
English
2(E)
BKM-41HD/42HD HD SDI Input Adaptors
The BKM-41HD/42HD HD SDI Input Adaptors are
the video signal input adaptors for Sony HDM-series
video monitors.
When installed in the input option slots on the rear
panel of the video monitor, they provide video input/
output connectors for the monitor.
Functions
Decoding of HD Serial Digital signals
The built-in decoder decodes the HD serial digital
signals.
HD Serial Digital and Analog Input and
Output Signal Connectors
The BKM-41HD is equipped with one pair of input
and output connectors for serial digital signals, as well
as one pair of input and output connectors for analog
signals.
The BKM-42HD is equipped with two pairs of input
and output connectors for serial digital signals, as well
as one pair of input and output connectors for analog
signals.
On both the BKM-41HD and BKM-42HD, you can
input one Y/P
B /P R or one GBR signal using the analog
input connectors.
Using the Input and Output
Connectors
For information about installing the BKM-41HD/42HD in
the video monitor input option slots, see "Installing into
Video Monitors" on page 4(E).
Configuration of Input/Output Connectors
and Signals that may be Input
The configuration of the input and output connectors
and the signals that may be input are shown below.
Input of HD serial digital signals
You can input HD serial digital signals to connectors
1and 3. You can obtain active loop-through output
of each input from connectors 2and 4respectively.
You need not attach 75-ohm terminators to connectors
2and 4.
OUT
IN
OUT
IN
P
B /B
OUT
IN
Y/G
IN
2
IN
1
MONITOR
OUT
MONITOR
OUT
HD-SDI
ANALOG
P R /R
HD serial
digital signals
Analog signals
The above picture shows the BKM-42HD connectors. The
connectors numbered 3, 4are not equipped with the
BKM-41HD.
1
3
5
7
9
2
4
6
8
0

1-3
3(E)
Notes
• The MONITOR OUT signals are available only
when the power of the video monitor is ON. The
MONITOR OUT signals are not available when the
monitor is in standby mode.
• The MONITOR OUT signals do not satisfy the ON-
LINE signal specifications.
Input of analog signals
You can input a Y or G signal to connector 5, a P
B or
B signal to connector 7, a P
R or R signal to connector
9. You can obtain loop-through output of those
signals from connectors 6, 8, and 0. If you do not
wish to use loop-through output, attach 75-ohm
terminators to connectors 6, 8, and 0.
Assigning input signals to connectors
Before inputting signals to the BKM-41HD/42HD, you
must specify the type and format of the signal that will
be input to each connector. To assign input signals to
each connector, use the on-screen INPUT
CONFIGURATION menu of your video monitor.
For information about using the INPUT CONFIGURATION
menu, refer to the manual of your video monitor.
Specifications
General
Power requirements +5V, ±6V
(supplied from the monitor)
Power consumption BKM-41HD: 9W
BKM-42HD: 14.5W
Recommended operating temperature
20°C to 30°C (68°F to 86°F)
Permissible operating temperature
0°C to 35°C (32°F to 95°F)
Operating humidity 30% to 85% (no condensation)
Maximum external dimensions (w/h/d)
50 ×256 ×245 mm
(2
×10
1
/ 8 ×9
3
/ 4 inches)
Mass BKM-41HD: Approx. 1280g
(2lb 13oz)
BKM-42HD: Approx. 1400 g
(2lb 14oz)
Input/Output Connectors
Digital input BKM-41HD: BNC ×1,
with monitor output
BKM-42HD: BNC ×2,
with monitor output
Analog input Both BKM-41HD and BKM-
42HD: BNC ×3, with loop-
through output
Signal Characteristics
Analog signals
Signal level 1Vp-p±6dB (sync on Y or G)
Frequency characteristics
60Hz to 30MHz±1dB
Delay time error 10nsec max.
Gain error 3%max.
Return loss 40 dB min.
(10MHz, 75-ohm terminated)
Digital signals
HD SDI signal input
Input impedance 75 ohms, unbalanced
Data rate 1.4835Gbps to 1.485Gbps
Conform to SMPTE 292M, BTA-S004A
MONITOR OUT
Output signal amplitude
800mVp-p±10%
Output impedance75 ohms, unbalanced
Frequency response
Y: 60Hz to 30MHz±1dB
P
B , P R : 60Hz to 15MHz±1dB
Delay time error 13.5nsec max.
Gain error 3% max.
Transmission distance100m (approx. 40ft) max.,
When using 5C-FB coaxial
cables (Fujikura, Inc.) or
equivalent.
Accessory Supplied
Installation manual (1)
Design and specifications are subject to change
without notice.
4(E)
Installing into Video Monitors
1 Remove the two covers of the
input option slots on the rear
panel of your video monitor.
2 Insert the adaptor below the
alignment mark on the left of
the upper screw hole of the
slot.
3 Push the adaptor in until it is
firmly seated in the connector
inside your video monitor.
4
Tighten the both upper and
lower screws to retain the
adaptor.
Check to be sure that the video monitor's MAIN POWER switch is off.
Each adaptor can be installed in any input option slot .
The BKM-41HD/42HD require two slots. Always turn your video monitor's MAIN POWER switch off before installing or removing the adaptor.
Alignment mark
Insert the adaptor
below the mark.
Covers of input
option slots

2-1
SECTION 2
SERVICE INFORMATION
2-1. SDI ASSY REMOVAL

1Remove the three shield cloth tapes.

2Unit cover

3SDI band (one)

4Coaxial cable assembly

5SDI assembly

SDI assembly (42 HD)
Removing the SDI band

SDI band

Slotted screwdriver

Attaching the SDI band SDI band
SDI leg
SDI band
SDI assembly

* Move towards the SDI leg 
 and secure.
2-2. HOWTO USETOOL ASSY
Note: This jig is used for installing and removing of the digital interface terminal.
TOOL ASSY
(X-3702-037-1)

3-1
SECTION 3
CIRCUIT ADJUSTMENTS
As BKM-41HD and BKM-42HD are optional boards of the HDM series (HDM-14E1U/14E5U/20E1U), they cannot be
operated alone. To measure and adjust them, attach to the HDM series monitor. Use an HDM series monitor which satisfies the
specifications.
The following describes the electrical adjustments required for the repair and maintenance of the BKM-41HD and BKM-
42HD.
BHD board (Analog YPBPR adjustment)
BHD board (HD SDI adjustment)
3-1. Preparation
1. Equipment Used
Name Main Specifications Equipment Name
Oscilloscope Frequency : DC to 150 MHz TEKTRONIX2445A or equivalent
Above 2 phenomena (ADD mode)
HD SDI signal generator With 1080 standard (SMPTE274M standard) Shibasoku : TG15B6 or equivalent
High vision signal generator BTA S-001A standard Leader Denshi : 440 or equivalent
Monitor Sony HDM-20E1U or equivalent
2.Tools
Name Parts Name Remarks
Extension board/cable kit (Z board) A-1394-806-A
75Ωterminater
3. Connections
• For analog component signal • For HD SDI signal
Y/PB//PR100% color bar
G/B/R 100% color bar
High vision
signal generator
Extension board
(Z board)
BKM-41HD or
BKM-42HD
75Ω
terminater x 3
Y/G terminal;
PB/B terminal
PR/R terminal
HD SDI
signal generator
100% color bar HD SDI IN
terminal
BKM-41HD or
BKM-42HD
Extension board
(Z board)
BKM-10R HDM-20E1U
BKM-10R HDM-20E1U

3-2
3-2. BHD Board Adjustment
(AnalogYPBPR Adjustment)
This section describes the adjustments of the Y LEVEL, PB
LEVEL, and PR LEVEL when the analog component signal
is input to the BHD board.
Equipment Used
Oscilloscope
Connection
Setting the Monitor
Set the INPUT CONFIGURATION menu of the SET UP
menu as follows.
FORMAT ................ YPBPR
SLOTNO ............... 2
INPUT NO.............. 4, 5, 6
SYNC MODE......... INT
Adjusting Procedure
1.Y LEVEL Adjustment
Adjustment Standard Adjusting Point
• Input the high vision YPBPR color bar TP201 (YOUT) outputlevel: The adjustment menu is located in
signal (100% White Ref. 100% 660±10mVp-p the BHD BOARD menu of the
Saturation) into the INPUT terminal. MAINTENANCE menu.
• Connect an oscilloscope to TP201 Y LEVEL
(Y OUT)
Note: Terminate the OUTterminal at 75Ω.
2. PB LEVEL Adjustment
Adjustment Standard Adjusting Point
• Input the high vision YPBPR color bar TP202 (PB OUT) output level: The adjustment menu is located in
signal (100% White Ref. 100% 660±10mVp-p the BHD BOARD menu of the
Saturation) into the INPUT terminal. MAINTENANCE menu.
• Connect an oscilloscope to TP202 PB LEVEL
(PB OUT)
Note: Terminate the OUTterminal at 75Ω.
3. PR LEVEL Adjustment
Adjustment Standard Adjusting Point
• Input the high vision YPBPR color bar TP203 (PR OUT) output level: The adjustment menu is located in
signal (100% White Ref. 100% 660±10mVp-p the BHD BOARD menu of the
Saturation) into the INPUT terminal. MAINTENANCE menu.
• Connect an oscilloscope to TP203 PR LEVEL
(PR OUT)
Note: Terminate the OUTterminal at 75Ω.
12345
TP201
TP202
TP203
67
A
B
C
D
E
F
G
CN1
Oscilloscope
660 ±10mVp-p
660 ±10mVp-p
660 ±10mVp-p

3-3
3-3. BHD Board Adjustment
(HD SDI Adjustment)
This section describes the adjustments of the Y LEVEL, PB
LEVEL, and PR LEVEL when the HD SDI signal is input to
BHD board.
Equipment Used
Oscilloscope
Connection
Setting the Monitor
Set the INPUT CONFIGURATION menu of the SET UP
menu as follows.
FORMAT ................ HD SDI
SLOT NO ............... 2
INPUT NO.............. 1
Adjusting Procedure
1.Y LEVEL Adjustment
Adjustment Standard Adjusting Point
• Input the 100% color bar signal TP201 (YOUT) output level: The adjustment menu is located in
(100% White Ref. 100% Saturation) 660 ±10mVp-p the BHD BOARD menu of the
into the HD SDI input terminal. MAINTENANCE menu.
• Connect an oscilloscope to TP201 Y LEVEL
(Y OUT)
2. PB LEVEL Adjustment
Adjustment Standard Adjusting Point
• Input the 100% color bar signal TP202 (PB OUT) output level: The adjustment menu is located in
(100% White Ref. 100% Saturation) 660 ±10mVp-p the BHD BOARD menu of the
into the HD SDI input terminal. MAINTENANCE menu.
• Connect an oscilloscope to TP202 PB LEVEL
(PB OUT)
3. PR LEVEL Adjustment
Adjustment Standard Adjusting Point
• Input the 100% color bar signal TP203 (PR OUT) output level: The adjustment menu is located in
(100% White Ref. 100% Saturation) 660 ±10mVp-p the BHD BOARD menu of the
into the HD SDI input terminal. MAINTENANCE menu.
• Connect an oscilloscope to TP203 PR LEVEL
(PR OUT)
660 ±10mVp-p
660 ±10mVp-p
660 ±10mVp-p
12345
TP201
TP202
TP203
67
A
B
C
D
E
F
G
CN1
Oscilloscope

4-1
SECTION 4
CIRCUIT DESCRIPTIONS
1. Serial Digital Signal Input Block
(HD SDI Module :HK-102)
The HD SDI signal input from the digital input terminal is
input to the HD SDI module (HK-102). The HD SDI module
(HK-102) is initialized by the RESET signal when the power
is turned on, and its mode is set by SYIF0 to SYIF7, SYSTA
0, 1, STRB, and SYCS.
The serial data signal is converted to the 10-bit parallel data
by the S/Pconverter via the auto equalizer circuit. The 10-bit
parallel data is output from CN3 and CN4 and input to IC102
(HD SDI signal processing).
2. HD SDI Signal Processing Block
IC102 is a programmable logic device. Data is loaded from
the IC101 ROM and determines the IC102 logic. IC102 is
input with 10-bit Y data, 10-bit C data, HD, VD, FRAME
signal, and 74.25 MHz CLK from the HD SDI module (HK-
102) (two in the case of BKM-42HD).When pin &ª of IC102
is “High”, INPUT 1 is selected. When “Low”, INPUT2
(BKM-42HD only) is selected.
The H SYNC and V SYNC of the monitor sync signal are
made by the HD, VD, FRAME signal, and CLK signal. The
SYNC phase can be changed by 16 stages by 4 bits of the
control signals P0 to P3 (pins ^§, ^•, ^ª, and &¡ of IC102) at
the maintenance menu. (P0:LSB, P3:MSB).
The Ydata and C data are latched by CLK to become the Y
data, PB data, and PR data. They are then adjusted to the
same delay time and output.
The V blanking period is counted from theVD signal to de-
termine the number of effective scanning lines 1080 or 1035.
D5 (RED LED) lights when the CRC ERROR is generated.
3. D.A Conversion, LPF Circuit Block
The Y data output from IC102 is converted to the analog
signal by the 74.25 MHz CLK at the D/A converter IC
(IC150). Likewise, the PB and PR data are converted to ana-
log signals by the 37.125 MHz CLK obtained by frequency-
dividingthe74.25 MHz CLK at theD/AconverterIC(IC501).
The Ysignal output from the D/A converter is band-limited
by the LPF (FL101), and input to the gain control IC (IC201)
via the amplification circuit (Q114, Q115).
Similarly, the PB, PR signals are band-limited by the LPF
(FL102 and FL103), and input to the gain control ICs (IC202,
IC203) via the amplification circuit (Q120, Q121:PB signal,
Q125, Q126:PR signal).
4. Analog Signal Block
The analog signals input from the analog input terminal are
turned ON by the “YPBPR” signal input to Q405 from pin
7of the IC1, output to the buffer, and are input to the gain
control ICs (IC201, IC202, IC203).
The digital and analogY, PB, and PR signals are adjusted for
their amplitudes byY LEVEL, PB LEVEL, and PR LEVEL
control signals respectively and output.
ThesesignalsareturnedONbythe“OE”signalinputtoQ117
frompin9of IC1, and output to the buffer, then to the mother
board.
5. Control Block
The CPU (IC1) performs serial communication with the sys-
tem controller of the main unit by the three signals MISO,
MOSI,andSCLK,andoutputscontrolsignalssuchasswitch-
ing signals according to the instructions of the system con-
troller of the main unit. Some control signals are output from
the extension board (IC13, IC14). The CPU reads the
adjustment data of the EEPROM (IC2) and outputs adjust-
ment voltage from the D/A converter IC (IC12). The CPU
also sends the fan stop signal and information on differentia-
tion between 1080 and 1035 to the system controller of the
main unit.
6. Power Supply Block
The HD SDI module (HK-102) requires 5V, 3.3V, 1.2V,
–2V, and –5V input power. These voltages are supplied by
the switching regulator circuit. The module uses two switch-
ing regulator control ICs (IC30, IC31) to output 3.3V and
1.2V, –2V respectively.
The oscillation frequency of this control IC is determined by
the resistor connected to pin 2and the capacitor connected
to pin 1. The voltage obtained by resistance-diving the ref-
erence voltage 2.5V made by IC32 and IC33 is input to pins
4and !¢, compared with the respective output voltage, and
pulse width-controlled to stabilize the output voltage.
The square wave output from pins 7and !º is amplified by
Q13 to Q16, Q23 to Q26, Q28 to Q31, and output by Q17
and Q18, and Q27, Q37, and Q32.
It is rectified by D20, D26, D29, D27, and D28, and inte-
grated by C59, C82, and C85 to generate the direct voltage.
The D5V power is used for 5V, while –5V is supplied from
the 3-pin regulator IC (IC21).

5-1
SECTION 5
SEMICONDUCTORS
CXD2308Q
MB89613R-236
CXD2315Q
EL4451CS
EPC1064PC8
NJM4558M
TC4W53FU
TL431CPS
X25040S-C7000
EPF8452AQC164-4
LM2940CT-5.0
LM2990T-5.0
LM4040B1M3X-5.0
MB88346BPFV
TC74VHCT244F
MC74HC4053F
TC74HC4538AF
TC74VHC595F
TL1451ACPW-E05
TL431CLP
DTC144EKA
2SA1037K
2SA1462
2SC2412K
2SC3545
2SJ182S
EC10QS06
RD5.6SB-1
RD6.2SB-1
NSQ03A06
SLR-325VCT31