Once the V
CC
capacitor is charged to the start-up voltage V
CC-start
(11V), the IC starts
driving the MOSFET. Both internal current sources are switched ‘off’ after reaching this
start-up voltage. Resistor R
SS
(3524) will discharge the ‘soft start’ capacitor, such that
the peak current will slowly increase. This to prevent ‘transformer rattle’.
During start-up, the V
CC
capacitor will be discharged until the moment that the primary
auxiliary winding takes over this voltage.
Figure:
The moment that the voltage on pin 1 drops below the ‘under voltage lock out‘ level
(UVLO = ± 9 V), the IC will stop switching and will enter a safe restart from the rectified
mains voltage.
Summary of Contents for 7629
Page 1: ......
Page 5: ......
Page 14: ...AV2 In SVHS Connector Kind Value Symbol 1 gnd v 2 gnd v 3 Y 1 Vpp 75 O j 4 C 0 3 Vpp 75 O j ...
Page 16: ...Figure ...
Page 18: ...Figure ...
Page 48: ...Hardware Alignments Figure Mono Carrier Top View LS ...
Page 76: ...Power Supply Figure Figure ...
Page 101: ...T8 7629 ...
Page 102: ...T8 7629 ...
Page 103: ...T8 7629 ...
Page 104: ...T8 7629 ...
Page 105: ...All Models 7629 PCB Locations ...
Page 106: ...All Models 7629 Power Supply Diagram A1 ...
Page 107: ...All Models 7629 Line Deflection Diagram A2 ...
Page 108: ...All Models 7629 Frame Deflection Diagram A3 ...
Page 109: ...All Models 7629 Tuner IF Diagram A4 ...
Page 110: ...All Models 7629 Video IF And Sound IF Diagram A5 ...
Page 111: ...All Models 7629 Synchronization Diagram A6 ...
Page 112: ...All Models 7629 Control Diagram A7 ...
Page 113: ...All Models 7629 Audio Amplifier Diagram A8 ...
Page 114: ...All Models 7629 BTSC Stereo SAP Decoder Diagram A9 ...
Page 115: ...All Models 7629 Audio Video Source Switching Diagram A10 ...
Page 116: ...All Models 7629 BTSC NDBX Stereo Decoder Diagram A11 ...
Page 117: ...All Models 7629 Front I O Control Headphone Diagram A12 ...
Page 118: ...All Models 7629 Rear I O Cinch Diagram A13 ...
Page 119: ...All Models 7629 PIP Interface Diagram A16 ...
Page 120: ...All Models 7629 CRT Panel Diagram B1 ...
Page 123: ...USED ONLY IN MODELS 27PS60S321 27RF72S325 32PS61S321 7629 PIP Panel Diagram P ...
Page 125: ...USED ONLY IN MODELS PC0125C321 PC0127C321 7629 EPS Panel Schematic ...
Page 126: ...USED ONLY IN MODELS PC0125C321 PC0127C321 7629 Card Interface Schematic ...
Page 128: ...All Models 7629 Main Panel component side ...
Page 129: ...All Models 7629 Main Panel copper side ...
Page 130: ...All Models 7629 CRT Panel component side ...
Page 131: ...All Models 7629 CRT Panel copper side ...
Page 132: ...All Models 7629 Headphone Panel component side ...
Page 133: ...All Models 7629 Side AV Panel component side ...
Page 134: ...All Models 7629 PIP panel component side ...
Page 135: ...All Models 7629 PIP panel copper side ...
Page 136: ...All Models 7629 Top Control Panel component side ...
Page 137: ...All Models 7629 EPS Panel PCB Top View only ...
Page 138: ...All Models 7629 Card Interface Panel PCB Top View ...
Page 139: ...All Models 7629 Card Interface Panel PCB Bottom View ...
Page 140: ...MAIN CABINET EXPLODED VIEW ...