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Service Manual CP-099/FS
5-8-6 Guard circuit
The guard signal is not used.
5-8-7 Damping resistor
For HF loop stability a damping resistor (R313,R315) is connected across the deflection coil.
5-8-8 EAST-WEST Amplifier (TDA8357J)
The East-West amplifier is current driven. It can only sink currents of the diode modulator circuit. A feedback resistor
R305 is connected between the input and output of this inverting amplifier in order to convert the East-West correction
input into an output voltage.
5-9 Power supply (STR F6654:CP-099FS, F6653:CP-099)
5-9-1 STR-F6654 general description
The STR-F6654 is an hybrid IC with a build-in MOSFET and control IC, designed for flyback converter type switch
mode power supply applications.
5-9-2 Power supply primary part operations
An oscillator generates pulses signals which turn on and off a MOSFET transistor.
5-9-2-1 Start-up circuit : V
IN
The start-up circuit is used to start and stop the operation of the control IC, by detecting a voltage appearing at V
IN
pin (pin 4).
SMPS TRANS
R809
D812
L803
C807
3
4
7
6
Drain
C810
R806
D807
D806
C808
C809
D808
D809
Main AC voltage
Vin
STR-F6654
Ground
3
5
4
Fig : Power supply start-up circuit
When the power switch is pushed on, V
IN
increases slowly. During this time, C810 is charged through R806.
As soon as V
IN
reaches 16V, the STR-F6654 control circuit starts operating. Then, V
IN
is obtained by smoothing the
winding voltage which appears between pin6 and pin7 of the SMPS transformer.
Summary of Contents for DDT-21H9ZDF(21")
Page 17: ...16 Service Manual CP 099 FS...
Page 40: ...Service Manual CP 099 FS 39 5 Circuit desription 5 1 Block diagram CP 099...
Page 41: ...Service Manual CP 099 FS 40 5 Circuit desription Block diagram CP 099FS...
Page 66: ...65 CIRCUIT DIAGRAM VE2 0 DVD Player Series Block Diagram...
Page 67: ...66 CIRCUIT DIAGRAM DVD MODULE DQL 1000 ALIM3351 MPEG IC...
Page 68: ...67 CIRCUIT DIAGRAM DVD MODULE DQL 1000 RF MOTOR_DIRIVERS...
Page 69: ...68 CIRCUIT DIAGRAM DQL 1000 FLASH SDRAM...
Page 70: ...69 CIRCUIT DIAGRAM DQL 1000 AUDIO_DAC VIDEO_CHANNEL...
Page 71: ...70 CIRCUIT DIAGRAM DQL 1000 SYSTEM_POWER...
Page 75: ...74 CIRCUIT OPERATIONAL DESCRIPTION b TRACKING Block Diagram c MIRROR Block Diagram...
Page 107: ...Service Manual CP 099 FS 106 8 3 DDT 14H9ZZF...
Page 108: ...Service Manual CP 099 FS 107 9 PRINTED CIRCUIT BOARD 9 1 Main PCB CP 099FS...
Page 109: ...Service Manual CP 099 FS 108 9 2 Main PCB CP 099...
Page 110: ...Service Manual CP 099 FS 9 3 Power PCB CP 099 109...
Page 111: ...Service Manual CP 099 FS 9 4Power PCB CP 099FS 110...
Page 112: ...Service Manual CP 099 FS 111 10 SCHEMATIC DIAGRAM 10 1 Main CP 099...
Page 113: ...Service Manual CP 099 FS 112 Main CP 099FS...
Page 114: ...Service Manual CP 099 FS 113 10 2 Power CP 099FS...
Page 115: ...Service Manual CP 099 FS 114 Power CP 099...
Page 116: ......