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SERVICE MANUAL MODEL DEST......IFB-12 World J: S/N 030,001 to 031,450 U/C, AEP: S/N 040,001 to 041,750 IFB-12 World J: S/N 031,451 and later U/C, AEP: S/N 041,751 and later IFB-12A World SIGNAL INTERFACE BOARD...
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CRITICAL TO SAFE OPERATION. REPLACE THESE COMPO- LES SCHÉMAS DE PRINCIPE, LES VUES EXPLOSÉES ET LES NENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR LISTES DE PIECES SONT D’UNE IMPORTANCE CRITIQUE AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- POUR LA SÉCURITÉ...
2-3. INPUT MODE ..................2-1(E) 2-4. OUTPUT MODE ..................2-2(E) SEMICONDUCTORS EXPLODED VIEWS 4-1. MAIN UNIT (IFB-12 (OLD)) ............... 4-1 4-2. MAIN UNIT (IFB-12 (NEW), IFB-12A) ............. 4-2 ELECTRICAL PARTS LIST BLOCK DIAGRAMS DIAGRAMS 7-1. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS ....7-1 SCHEMATIC DIAGRAMS •...
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English The IFB-12A signal interface board is a PC board to be mounted on WARNING the projector or the signal interface switcher, etc. so that RGB and audio signals from a computer, etc. can be input or output to a signal For the customers in the USA interface switcher.
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5 DIP switch Rotary switch Set the position of the DIP switch according to the input signal. (Refer to “Setting the DIP switch”.) Never change the Mounting the IFB-12A setting of the JP5 connector. Note Mounting or removal of signal interface boards must be performed by qualified personnel only.
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Setting the DIP Switch Specifications Input connectors Set the DIP switch to the appropriate position according to the input /VIDEO connector (BNC type): Red signal input, 0.7 Vp-p ± 2 dB, R/R-Y/P signal. 75 ohms terminated Component R-Y signal input, 0.7 Vp-p ± 2 dB, 75 ohms terminated Input mode can be selected signal input, ±0.35 Vp-p ±...
When the IN/OUT switch (S2: IFB-12 (OLD)), (SW2: OUT select switch is used to select the power for the input IFB-12 (NEW), IFB-12A) is set to the IN side and SEL or output circuit. (C19) terminal becomes LOW, this mode is set.
Video signals input from the BNC terminal are passed HIGH, this mode is set. IN/OUT terminal of CN3 (B23) through relays RY1, 2, and 3 (IFB-12 (OLD)), RL1, 2, and (IFB-12 (OLD)), J1 (B23) (IFB-12 (NEW), IFB-12A) 3 (IFB-12 (NEW), IFB-12A) and are input to +6 dB becomes LOW and informs the outside of the output mode.
SECTION 7 DIAGRAMS 7-1. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS J: S/N030,001 to 031,450 IFB-12 (OLD): U/C, AEP: S/N 040,001 to 041,750 J: S/N 031,451 and later FB-12 (NEW): U/C, AEP: S/N 041,751 and later Note: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics.
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IFB-12 (OLD) (2/3) BOARD IC2 GS4881-CKA COMPOSITE SUPPLY SYNC VOLTAGE – VIDEO ODD/EVEN INPUT FIELD INDEX – VERTICAL SYNC CAPACITOR CHARGE CURRENT DEFAULT BURST GATE/ BACK PORCH CLAMP – – – – IFB-12 (OLD) (2/3) BOARD IFB-12 (OLD) (2/3) BOARD...
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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 equip- ment described in this manual. Sony Corporation expressly prohibits the duplication of...
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