Kenwood KRF-X9995D Service Manual page 12

KRF-X9995D/X9995D-S/VR-5700/5900
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Port No. Port Name
67 VSS
68 VDD
69 X2
70 X1
71 TEST
72 XT2
73 XT1
74 VDD
75 AVDD
76 NC
77 C DET
78 Y DET
79 CK DET
80 OPT DET
9. Description of the Circuit Control
9-1 Digital Selector
• VR-5700/5900/5090/KRF-X9995D(for OPT and COAX)
INPUT DSEL A(Pin22) DSEL B(Pin23) DSEL C(Pin24)
CD1 L
MD/TAPE1 H
CD-R L
TE
L 13942296513
VIDEO2 H
VIDEO3 L
VIDEO4 H
DVD H
OTHERS L
9-2 Video Selector
(BA7649AF,BA7611AF,BA7612F,BA7613F)
1 VSEL
INPUT VSEL(Pin63)
VIDEO1
VIDEO2
VIDEO3
VIDEO4
AV-AUX
DVD H
V MUTE
2 -2 Y Detect(Pin78) = L
Y C SEL A Y C SEL B
INPUT
www
(Pin52)
VIDEO1 L
VIDEO2 L
VIDEO3 L
.
VIDEO4 L
AV-AUX L
DVD L
V MUTE H
12
CIRCUIT DESCRIPTION
I/O
- GND
- Power supply (+3.3V).
- Crystal resonator (6MHz) connection.
I Crystal resonator (6MHz) connection.
- Pull down port.
- Unused.
- GND
- Power supply (+3.3V).
- Power supply (+3.3V).
- Unused.
I Zone A component signal detection.
I Zone A S-terminal signal detection.
I Zone A color killer detection.
I Optical digital input detection.
H
H
L
L
H
H
L
L
L
L
L
L
L
L
(Pin51)
L
x ao
y
L
L
i
L
L
L
H
8
Function
✽
The number in the ( ) is pin number of sub microcomputer.
• VR-5080/KRF-X7775D
INPUT
L
L
CD1(OPT)
H
VIDEO2(COAX)
Q Q
3 6 7 1 3
H
VIDEO3(COAX)
H
DVD(OPT/COAX)
H
OTHERS
L
L
2 Y C Select
2 -1 Y Detect(Pin78) = H
Y C SEL A Y C SEL B
INPUT
(Pin52)
VIDEO1 L
VIDEO2 L
VIDEO3 L
VIDEO4 L
AV-AUX L
DVD H
V MUTE H
3 CTRL A, CTRL A2, CTRL B
3 -1 C Detect(Pin77) = L
VR-5900/5090/KRF-X9995D
CTRL A
INPUT
(Pin66)
VIDEO1 L
u163
VIDEO2 L
VIDEO3 L
.
VIDEO4 L
AV-AUX L
DVD H
V MUTE H
2 9 9 4 2 8
ACTIVE
H
DSEL A DSEL B
(Pin22) (Pin23)
L H
L H
1 5 0 5 8 2 9 9 4
H H
H L
L L
(Pin51)
H
H
H
H
H
L
H
CTRL A2 CTRL B
m
(Pin64) (Pin65)
L H
co
L H
L L
L H
L H
H L
H H
9 9
L
Detection
Detection
DSEL C
(Pin24)
L
L
2 8 9 9
L
L
L