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MODELS JC-1531 VMA-2(H), (N), (NT), (T)
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Introduction to the MultiSync 4FGe color monitor
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Molded plastic cabinet with tilt swivel base.
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Pin Assignment Table
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THE METHOD FOR REMOVING THE TILT SWIVEL BASE
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Turn the monitor CRT face down as
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5. Disconnect the connectors “CN-J”,
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8. Turn the monitor CRT face down as
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CONTROL PWB ASSY
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PARTS LOCATION- BOARD LAYOUT
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MAIN PWB ASSY (PWE-365)
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VIDEO PWB ASSY (PWE-315A)
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SW REG PWB ASSY (VMA)
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ADJUSTMENT CONTROLS LAYOUT
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VR710 (SUB BIAS)
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See page 26 for j i g
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See page 26 f o r j i g
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(2-l) MAIN PWB ADJUSTMENT
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0 gram distortion .
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(11) Video Amplitude
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( 1 2 ) C u t - o f f
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(14) SUB-BRIGHT Adjustment
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SET the user switch
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Connect to TP-A on
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i M A C 1(832x624) i 10x7(72)
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I....__............... _ . . . . ____)_._._
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TABLE OF CONTENTS
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1. Power Supply Circuit
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l-1. Switching regulator unit
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(c) Converter circuit
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(e) Error detection amplifier circuit
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(g) Overvoltage Protection
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1-2. H V Voltage Circuit
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1-3. DC/DC converter for H deflection circuit
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1-4. Low voltage chopper regulator circuit
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2. Interface Circuit
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2-2. SYNC SW and Video Clamp Pulse Circuit
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2-3. Self Test Circuit
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3. Video System
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3-2. Brightness and cut-off circuit
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3-3. Video Blanking Circuit and Video Mute Circuit
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4. Digital Control System
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5. Deflection System
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5-l-2. Horizontal phase circuit
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5-1-3. H DRIVE Circuit
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5-l-4. H OUTPUT Circuit
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52 kHz to 62 kHz
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5-1-5. Parabola Waveform Generating Circuit
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