2)CHROMINANCE SIGNAL PROCESSING (PB)
The down converted chrominance PAL-COLOR signal is obtained by LPF from PB ENVE.
And then the signal is up-converted to 4.43MHz or 3.58MHz by the MAIN CONVERTER.
The redundant harmonice is filtered out by the BPF, and then the signal is applyed to the CCD IC to reduce the
chrominance crosstalk.
The NTSC PLAYBACK is possible on PAL/SECAM SYSTEM by the NAP circuit, the activation of which is determined by
7-8bits of GROUP 7 on controlling the SERIAL.
The signal is mixed with the Y/C after passing the Color Noise Canceller circuit.
CIRCUIT
11
15
13
48
3
PRE-AMP
7th PIN
LPF
AMP
BPF2
BPF1
ACC AMP
MAIN CONV
LPF
KIL
NAP
BPF
CNC
Y/C MIX
2H DELAY
(LC89978M)
50
1
+
13
52
46
45
FIG.6 Chrominance Signal Processing (PB)
Summary of Contents for DV-K*84W Series
Page 71: ...CIRCUIT DIAGRAMS 68 SECTION 9 CIRCUIT DIAGRAM 9 1 CONNECTION DIAGRAM DV K884W K484W K284W...
Page 72: ...CIRCUIT DIAGRAMS 69 9 2 POWER CIRCUIT DIAGRAM DV K884W K484W K284W...
Page 73: ...CIRCUIT DIAGRAMS 70 9 3 SYSCON AND LOGIC CIRCUIT DIAGRAM...
Page 74: ...CIRCUIT DIAGRAMS 71 9 4 PIF CIRCUIT DIAGRAM DV K884W K484W K284W...
Page 75: ...CIRCUIT DIAGRAMS 72 9 5 IF MPX MODULE CIRCUIT DIAGRAM DV K884W K484W K284W...
Page 76: ...CIRCUIT DIAGRAMS 73 9 6 VIDEO AUDIO CIRCUIT DIAGRAM DV K884W K484W K284W...
Page 77: ...CIRCUIT DIAGRAMS 74 9 7 Hi Fi PRE AMP CIRCUIT DIAGRAM DV K884W K484W K284W...
Page 78: ...DISASSEMBLY 79 SECTION 11 DISASSEMBLY 11 1 PACKING ASS Y...
