11
CIRCUIT
2) CHROMINANCE SIGNAL PROCESSING (PB)
The down-converted chrominance signal is obtained from PB ENVE signal by LPF first. And then the signal is up-
converted to 4.43MHz by the MAIN CONVERTER.
The redundant harmonics is filtered out by the BPF, and then the signal is applied 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 GROUP 7, MSB 7-8 bits.
The signal is then applied to Color Noise Canceller and mixed together with the luminance signal.
15
50
1
48
3
+
13
52
46
45
13
PRE-AMP
7th PIN
LPF
ACC AMP
MAIN CONV
BPF2
BPF1
2H DELAY
(LC89977M)
Y/C MIX
CNC
BPF
NAP
KIL
LPF
AMP
FIG.6 Chrominance Signal Processing (PB)
Summary of Contents for DV-K88 series
Page 71: ...68 CIRCUIT DIAGRAMS 9 1 Connection Diagram SECTION 9 CIRCUIT DIAGRAM 68...
Page 72: ...69 CIRCUIT DIAGRAMS R819 5 1 9 2 Power Circuit Diagram...
Page 73: ...70 CIRCUIT DIAGRAMS 9 3 Syscon and Logic Circuit Diagram...
Page 74: ...71 CIRCUIT DIAGRAMS 9 4 AV SW Circuit Diagram...
Page 75: ...72 CIRCUIT DIAGRAMS 9 5 IF PDC Circuit Diagram TM...
Page 76: ...73 CIRCUIT DIAGRAMS 9 6 If Module Circuit Diagram A2...
Page 77: ...74 CIRCUIT DIAGRAMS 9 7 If Module Circuit Diagram Nicam...
Page 78: ...75 CIRCUIT DIAGRAMS 9 8 Hi Fi Pre Amp Circuit Diagram...
Page 79: ...76 CIRCUIT DIAGRAMS 9 9 Video Audio Circuit Diagram...
Page 80: ...77 CIRCUIT DIAGRAMS 9 10 Remocon Circuit Diagram...
Page 81: ...SECTION 10 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW 78 P C B LOCATION 10 1 PCB Main...
Page 82: ...80 P C B LOCATION 10 3 PCB Logic DV K8K S S Series DV K86 S S Series DV K82 S S Series...
Page 83: ...81 P C B LOCATION DV K88 S S Series...
Page 84: ...SECTION 11 DISASSEMBLY 83 DISASSEMBLY 11 1 Packing Ass y...
Page 85: ...84 DIAGRAMS DV K88 Series DV K82 Series DV K8K Series DV K86 Series 11 2 Front Panel Assembly...