Kenwood DV-6050, Service Manual

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DV-6050
8
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Pin Description
1 BIAS1 I Input of bias1.
2 VIN1 I CH1 input.
3 VIN2 I CH2 input.
4 OPIN (+) I Not inverted input of OP-AMP.
5 OPIN (-) I Inverted input of OP-AMP.
6 OPOUT O Output of OP-AMP.
7 AGND - Analog ground.
8 MGND - GND
9 P.VCC2 - Power supply (+5.0V)
10 MUTE2 - Mute control of CH2.
11 DGND - Digital ground.
12 V02 (-) O Driver CH2 output (-).
13 V02 (+) O Driver CH2 output (+).
14 V01 (-) O Driver CH1 output (-).
15 V01 (+) O Driver CH1 output (+).
Voltage
AD INPUT KEY 1 AD INPUT KEY 2 AD INPUT KEY 3
✽
Pin 16
✽
Pin 17
✽
Pin 18
0V PLAY/PAUSE STOP DISC1
0.64V - - -
1.35V OPEN/CLOSE SKIP UP/NEXT DISC2
2.18V DISC SKIP SKIP DOWN/PREV DISC3
2.75V - - DISC4
3.40V - - DISC5
Pin No. Pin Name I/O Pin Description
Logic
H L
67 SCLK0 O
SIO0 clock output to communicate between main
microcomputer and DVD system microcomputer.
68 SI0 I
SIO0 data input to communicate between main
microcomputer and DVD system microcomputer.
69 SO0 O
SIO0 data output to communicate between main
microcomputer and DVD system microcomputer.
70 SCLK1 O SIO1 clock output for control ICs.
71 SI1 I SIO1 data input for control ICs.
72 SO1 O SIO1 data output for control ICs.
73 PULL UP0 I Unused.
74 PULL UP1 I Unused.
75 NMI I Unused.
76 SODCINT0 I Interruption port from SODC.
77 SODCINT1 I Interruption port from SODC.
78 AVINT0 I Interruption 0 port from AV decoder.
79 WMINT I Interruption port from Water Mark Detector.
80 AVINT1 I Interruption port 1 from AV decoder.
81 ADSEP I Unused.
82 RST I Reset signal input.
83 VDD - Supply voltage (+3.3V).
84~91 CPUDT0~7 I/O Bus data (0~7) input and output.
92 VSS - Connected to GND.
93~100 CPUDT8~15 I/O Bus data (8~15) input and output.
2. Key Matrix
✽
Pin Numbers of Sub Microcomputer
3. Pin Description of IC's
3-1 4ch BTL Driver : BA5823FM (DVD AUDIO FRONT END, IC5)