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ANALOG AUDIO DISTRIBUTION BOARD
BKPF-L753A
MAINTENANCE MANUAL
1st Edition (Revised 1)
Serial No. 10001 and Higher
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! 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, F
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Table of Contents Manual Structure Purpose of this manual ........................................................................................ 3 (E) Contents ............................................................................................................... 3 (E) Related manuals................................................................................................... 3 (E) 1. Service Overview 1-1. Notes on Repair Parts ....................................................
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6. Schematic Diagrams ADA-55 .................................................................................................................. 6-2 CN-1855/1856 ........................................................................................................ 6-3 DD-36 ..................................................................................................................... 6-4 7. Board Layouts ADA-55 ..............................................................................
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Manual Structure Purpose of this manual This manual is the maintenance manual of Analog Audio Distribution Board BKPF-L753A. This manual is intended for use by trained system and service engineers, and describes the information for periodic maintenance and detailed service. Contents This manual is organized by following sections. Section 1 Service Overview This section explains the notes on repair parts and IC link replacement. Section 2 Electrical Alignment This section explains the adjustment
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Section 1 Service Overview 1-1. Notes on Repair Parts 1-2. IC Link Replacement 1. Safety Related Components Warning w w An IC link is critical parts to safe operation. Components marked ! are critical to safe operation. Replace this component with Sony parts whose part Therefore, specified parts should be used in the case of numbers appear in this manual published by Sony. replacement. If not, this may cause a fire or electric shock. Be sure to use the specified component in this manual. 2. Stan
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1-4. Name and Function of Switch/Indicator/etc. 1-4. Name and Function of Switch/Indicator/etc. 6 7 8 S1 1 COR2 S2 2 RV4 MO ST 3 D1 COR3 COR1 4 5 RV3 Main Board (ADA-55 Board: Side A) Switches/shorting plugs (Factory default settings are indicated by a \\\ mark) \\ No. Ref. No. Name Function 7 S1 AUDIO 1 600 Z Selects the input impedance of the signal input to the AUDIO 1 connector. OFF: 20 kZ \ ON: 600 Z 8 S2 AUDIO 2 600 Z Selects the input impedance of the signal input to the AUDIO 2 connector
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1-5. Unleaded Solder 1-5. Unleaded Solder Boards requiring use of unleaded solder are printed with a lead free mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size.) : LEAD FREE MARK m . Be sure to use the unleaded solder for the printed circuit board printed with the lead free mark. . The unleaded solder melts at a temperature about 40 dC higher than the ordinary solder, therefore, it i
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Section 2 Electrical Alignment 2-1. Electrical Alignment Overview 2-1-1. Required Equipment and Tools Use the equipment listed below or the equivalent. Item Model Remarks Extension board EX-731 (Part No. A-8322-598-A) Audio signal generator * Tektronix SG505 (Option-02) Audio level meter * — Interface unit Sony PFV-L1 or PFV-L10 Adjustment screwdriver — Insulation type Resister (600 Z , within 1 %) with lead *: Use the equipment after calibration has been completed. 2-1-2. Connection PFV-L1/L10
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2-2. Preparation of Adjustment 2-3. Input/Output Gain Adjustment 2-3. Input/Output Gain Adjustment 2-2. Preparation of Adjustment Measuring equipment: Audio level meter 1. Extend the ADA-55 board with a extension board. 2. Write the customer settings of the shorting plugs 1. Set the output of the generator to +4.0 dBm, 1 kHz. (COR1, COR2, and COR3) and switches (S1, and S2) on the ADA-55 board down in following table. (0 dBm = 0.775 Vrms) 3. Set their shorting plugs and switches as follows: CH1
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2-4. CMRR (Common Mode Rejection Ratio) Adjustment 2-5. Input/Output Gain Adjustment for Customer Setting 2-4. CMRR (Common Mode Rejection 2-5. Input/Output Gain Adjustment for Ratio) Adjustment Customer Setting Measuring equipment: Audio level meter n When the audio gain (COR1 or COR2) is not 0 dB, be sure 1. Set the output of the generator to +15.0 dBm, 60 Hz. to perform this adjustment. CH2 adjustment Measuring equipment: Audio level meter 2. Connect the audio signal generator to the input of
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Section 3 Spare Parts ------------ ADA-55 BOARD (ADA-55 BOARD) ------------ Ref. No. *1:[Board No. suffix -11,12] or Q'ty Part No. SP Description *2:[Board No. suffix -14] C44 1-107-781-11 s ELECT, NONPOLAR 47uF 20% 16V Ref. No. C45 1-107-781-11 s ELECT, NONPOLAR 47uF 20% 16V or Q'ty Part No. SP Description C46 1-163-227-11 s CERAMIC, CHIP 10pF 5% 50V (2012) C47 1-163-224-11 s CERAMIC, CHIP 7pF 50V (2012) 1pc 3-179-084-01 s LEVER (R), PC BOARD C48
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(ADA-55 BOARD) (ADA-55 BOARD) Ref. No. Ref. No. or Q'ty Part No. SP Description or Q'ty Part No. SP Description C97 1-164-346-11 s CERAMIC, CHIP 1.0uF 16V (2012) Q28 8-729-216-22 s TRANSISTOR 2SA1162-G C98 1-164-346-11 s CERAMIC, CHIP 1.0uF 16V (2012) Q29 8-729-207-89 s TRANSISTOR 2SA1358-Y (S/N 10001 to 11870) Q30 8-729-207-82 s TRANSISTOR 2SC3421-Y Q31 8-729-207-89 s TRANSISTOR 2SA1358-Y CN101 1-506-746-11 s CONNECTOR, D
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(ADA-55 BOARD) (ADA-55 BOARD) Ref. No. Ref. No. or Q'ty Part No. SP Description or Q'ty Part No. SP Description R51 1-216-662-11 s METAL, CHIP 3.0K 0.5% 1/10W (2012) R111 1-216-308-00 s METAL, CHIP 4.7 5% 1/10W (2012) R52 1-216-611-11 s METAL, CHIP 22 0.5% 1/10W (2012) R112 1-216-308-00 s METAL, CHIP 4.7 5% 1/10W (2012) R53 1-216-611-11 s METAL, CHIP 22 0.5% 1/10W (2012) R113 1-216-308-00 s METAL, CHIP 4.7 5% 1/10W (2012) R54 1-216-663-11 s METAL, CH
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------------------ ------------------------------------ CN-1855/1856 BOARD DD-36 BOARD ;For S/N 10001-S/N 17325 ------------------ ------------------------------------ Ref. No. or Q'ty Part No. SP Description *1:[Board No. suffix -11] *2:[Board No. suffix -12] 1pc 3-202-610-02 o PANEL (753A), CN 2pcs 3-686-054-02 o STUD, SUPPORT, PC BOARD Ref. No. 4pcs 7-621-775-10 s SCREW +B 2.6x4 or Q'ty Part No. SP Description 2pcs 7-688-002-11 s WASHER 2.6, MIDDLE 1pc
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Index IC Section 4 Semiconductor Pin Assignments Semiconductors of which functions are equivalent are described here. For parts replacement, refer to the section of Spare Parts in this manual. The circuit diagram of each IC is obtained from the IC data book published by the manufacturer. DIODE Page LED Page TRANSISTOR Page IC Page MBR0530T1 ..................... 4-2 CL-155UR/G-D ................ 4-2 2SA1162G ....................... 4-2 MAX742CWP-TE2 ........... 4-3 2SA1358-Y ....................
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IC Diode, LED, Transistor DIODE LED TRANSISTOR —TOP VIEW— —TOP VIEW— MBR0530T1 CL-155UR/G-D 2SA1162G 8 SI4431DY-T1 7 1 6 2 2SA812-T1-M5M6 3 5 4 RED 1 2 3 GREEN S 4 2SA1358-Y 568 7 —TOP VIEW— UN2221 (R1=2.2k,R2=2.2k) UN2221-TX R1 R2 —TOP VIEW— 2SC1623 2SC1623-T1-L5L6 2SC3421-Y 8 SI4410DY-T1-REVA 1 7 6 2 5 3 4 D D D D 68 7 5 4 G 1 2 3 S S S BKPF-L753A 4-2
