Circuit Operating Descriptions
13-12
Samsung Electronics
13-5-3 Amplifier (MM1692)
VIC1 of JACK PCB is 6dB amplifier.
Based on CVBS signal, the final output level must be 2Vpp without 75ohm terminal resistance.
Because the level of video encoder output is only 1Vpp, the level is adjusted with the special
amplifier.
When mute of pin 5 is high active, if the pin is floating and connect to power, the output
signal is never outputted.
Y, C, Y(R), Cb(B), Cr(R) outputted from video encoder are inputted to VIC1 [Pin14, 16, 13, 12,
11] respectively. And CVBS Output[Pin 15] is made by Y & C Mixing signal.
The signal to which gain is adjusted by amplifier is outputted from jack via 75ohm Resistance
(VDR1,2,4,5,6,).
Summary of Contents for DVD-R157
Page 10: ...Precautions 1 6 Samsung Electronics MEMO...
Page 14: ...Product Specification 2 4 Samsung Electronics MEMO...
Page 37: ...Samsung Electronics 6 1 6 Exploded View and Parts List 6 1 Cabinet Assembly 6 2...
Page 40: ...Exploded Views and Parts List 6 4 Samsung Electronics MEMO...
Page 52: ...7 12 Samsung Electronics Electrical Parts List MEMO...
Page 60: ...Wiring Diagram 9 2 Samsung Electronics MEMO...
Page 66: ...PCB Diagrams 10 6 Samsung Electronics COMPONENT SIDE CONDUCTOR SIDE 10 3 Key PCB...
Page 67: ...PCB Diagrams Samsung Electronics 10 7 10 4 Function PCB COMPONENT SIDE CONDUCTOR SIDE...
Page 68: ...PCB Diagrams 10 8 Samsung Electronics MEMO...
Page 83: ...Samsung Electronics 12 1 12 Operating Instructions...
Page 84: ...Operating Instructions 12 2 Samsung Electronics...
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Page 112: ...Circuit Operating Descriptions 13 16 Samsung Electronics MEMO...
Page 124: ...Reference Information 14 12 Samsung Electronics MEMO...