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SERVICE MANUAL MODEL DEST ......BKM-301HD US/CND POWER BLOCK B BLOCK GC BOARD HD SDI INPUT ADAPTOR...
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SÉCURITÉ APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES PUBLISHED BY SONY. COMPOSANTS SONY DONT LE NUMÉRO DE PIÉCE EST INDIQUÉ DANS LE PRÉSENT MANUEL OU DANS DES SUPPLÉMENTS PUBLIÉS PAR SONY.
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SAFETY CHECK-OUT After correcting the original service problem, perform the following safety checks before releasing the set to the customer: Check the area of your repair for unsoldered or poorly-soldered connections. Check the entire board surface for solder splashes and bridges. Check the interboard wiring to ensure that no wires are “pinched”...
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English Table of Contents Table of Contents For the customers in the USA Overview ................12 This equipment has been tested and found Precautions ..............12 to comply with the limits for a Class A digital Connections ..............13 device, pursuant to Part 15 of the FCC Operation ................14 Rules.
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Connections Overview The HD SDI Input Adaptor BKM-301HD is an optional board Connect the monitor and the digital VTR as follows. that provides the HD SDI signal input (one line) for Sony HD Trinitron Color Monitors, the PHM-20M8U and the PHM- 14M8U.
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Operation Specifications Follow the instructions below. Input/Output HD SDI IN: BNC×1 Serial digital (1.485 Gbps) Conform to SMPTE 292M, BTA-S004A MONITOR OUT: BNC×1 *The MONITOR OUT signals do not satisfy the ON-LINE signal specifications. Quantization: 10 bits/sampling Frequency response: Y: 24 MHz ± 3dB : 12 MHz ±...
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This manual is intended for dealers. Leave installation of the BKM-301HD to your authorized Sony dealer. The monitor has many components inside that have extremely high voltage. Touching these may lead to injury. Do not install this input adaptor by yourself.
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English Table of Contents Components ..............14 Installing the Input Adaptor ..........15 Before Installing the Input Adaptor ....... 15 Installing the Power Block ..........16 Installing the GC board ..........17 Installing the B block ............. 18 After Installing the Input Adaptor ........20 Rewriting the Service Mode Status ........
Installing the Input Adaptor Components Install the input adaptor in the follow- Pull the main bracket forward a ing order: little. Remove the screws on the G Power block GC board board and remove the cable 1 Power block between the terminal board and 2 GC board the G board.
Installing the Input Adaptor Install the power block shield case Installing the Power Installing the GC board Insert the board holders (supplied) removed in Step 1. Lock the case Block into the four holes in the shield with the screw. case.
Installing the Input Adaptor Installing the B block From the back of the connector Insert the cable (black/red) from Remove the pawls that lock the the power block to the CN1 connector panel. Remove the panel cover, create two holes. connector on the GC board.
Installing the Input Adaptor Rewriting the Service Mode Status You need to rewrite the service mode Adjust the main bracket position. Press the MENU/EXIT and status so that the input adaptor can Insert the B block in the CN4001 ENTER/SELECT buttons as accept HD SDI signals.
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Rewriting the Service Mode Status Press the DEGAUSS button again while “WRITE” is displayed. The “*” appears momentarily, then disappears. If the setting has been properly completed, “ ” appears to the left of “1.” This indicates that the service mode status has been rewritten.
SECTION 2 CIRCUIT ADJUSTMENTS The BKM-301HD is an optional board of the PHM-14M8U/20M8U and therefore cannot operate by itself. Consequently when performing measurements and adjustments, mount it to the PHM series monitor. Use a monitor which satisfies the given specifications.
2-2. B BOARD ADJUSTMENTS Switch, Control Settings Use the following tools for adjustments performed when the Monitor control panel parts in the B board have been replaced. INPUT C (HD SDI) ....ON APERTURE ......MIN Equipment Used BRIGHT ........50% (Center click) HD SDI signal generator: TG15B6 CHROMA ........
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Adjusting Procedure 1. Y Gain Adjustment State during Adjustment Specification Adjusting Point • Output level of pin 7 of CN102 (Y SDI): 700 ±10 mV p-p • Input the HD SDI color bar 1 RV101 (A-3) B Board (100% color bar) signal into the INPUT C (HD SDI) input terminal.
SECTION 3 CIRCUIT DESCRIPTIONS The BKM-301HD is composed of three blocks-power sup- The power supply of the fan attached to the bracket of the B board is supplied from pin 1 of CN3. When the fan stops, ply block, GC board, and B board.
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The 74.25 MHz clock for the Y signal frequency converted by IC102 is output from pin `⁄‹› . The 37.2 MHz clock for P is connected to D/A from pin `⁄›› . and P IC104 is the D/A for the Y signal. Y signals subjected to D/A are output from pin @¢.
SECTION 5 EXPLODED VIEWS NOTE : The components identified marked ! are • Items with no part number and no description are not stocked be- critical for safety. cause they are seldom required for routine service. Replace only with the part number specified. •...
SECTION 6 ELECTRICAL PARTS LIST NOTE : • Items marked “ * ” are not stocked since When indicating parts by reference they are seldom required for routine serv- number, please include the board The components identified marked ! are ice.
7-2. GC BLOCK DIAGRAM Q8, 9 3.3V 3.3V REG OUT SWITCHING REGULATOR PROTECTOR CONTROL Q4-7 OUT1 DTC1 Q27, 28 DTC2 RECT –5V SWITCHING REFERENCE –5V VOLTAGE Q23-26 OUT2 PROTECTOR AC IN SWITCHING MONITOR RECT PROTECTOR POWER BLOCK REGURATOR Q2, 3 REFERENCE VOLTAGE PROTECTOR...
SECTION 8 DIAGRAMS 8-1. PRINTED WIRING BOARDS/SCHEMATIC DIAGRAMS Note: • All capacitors are in µF unless otherwise noted. pF: µµF 50WV or less are not indicated except for electrolytics. • Indication of resistance, which does not have one for rating elec- trical power, is as follows.
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The material contained in this manual consists of information that is the proterty 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...