Kenwood KRF-X7775D Service Manual page 13

Audio video surround receiver
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3 -2 C Detect(Pin77) = H
• CK DET(Pin79) = L
VR-5900/5090/KRF-X9995D
CTRL A
INPUT
(Pin66)
VIDEO1
L
VIDEO2
L
VIDEO3
L
VIDEO4
L
AV-AUX
L
DVD
L
V MUTE
H
4 CPST A(Pin53~59)
4 -1 Y Detect(Pin78) = H
CPST AA
INPUT
(Pin59)
VIDEO1
L
VIDEO2
H
VIDEO3
L
VIDEO4
L
AV-AUX
H
DVD
L
V MUTE
L
4 -2 Y Detect(Pin78) = L
CPST AA
INPUT
(Pin59)
VIDEO1
L
VIDEO2
H
VIDEO3
L
VIDEO4
L
AV-AUX
H
DVD
L
V MUTE
L
5 CPST B(Pin48~50)
CPST BA
INPUT
(Pin50)
VIDEO1
L
VIDEO2
L
VIDEO3
H
VIDEO4
H
DVD
L
10. Key Matrix
KRF-X9995D/VR-5900 only
Key 1(Pin26)
INPUT UP
Key 2(Pin27)
AUTO
Key 3(Pin28)
P. CALL UP
Key 4(Pin29)
P. CALL DOWN
Key 5(Pin30)
SOUND/SET UP
Key 6(Pin31)
LISTEN MODE
Key 7(Pin32)
INPUT MODE
Key 8(Pin33)
SPEAKER A
CIRCUIT DESCRIPTION
CTRL A2
CTRL B
(Pin64)
(Pin65)
L
H
L
H
L
H
L
H
L
H
L
H
H
H
CPST AB
CPST AC
CPST AD
(Pin58)
(Pin57)
(Pin56)
L
L
H
H
H
L
H
H
L
L
H
L
H
L
CPST AB
CPST AC
CPST AD
(Pin58)
(Pin57)
(Pin56)
L
L
H
H
H
L
H
H
L
L
H
L
H
L
CPST BB
CPST BC
(Pin49)
(Pin48)
L
L
H
L
L
L
H
L
H
H
The number in the ( ) is pin number of FL driver (X25,IC1).
Key
OPEN/CLOSE
BAND
MEMORY
MULTI CONT. UP
MULTI CONT. DOWN
THX
CD2/TAPE2 MONI.
SPEAKER B
KRF-X7775D/X7775D-S/VR-5080/5090
3 -3 CK DET(Pin79) = H
VR-5900/5090/KRF-X9995D
CTRL A
INPUT
(Pin66)
VIDEO1
L
VIDEO2
L
VIDEO3
L
VIDEO4
L
AV-AUX
L
DVD
L
V MUTE
H
CPST AE
CPST AF
(Pin55)
(Pin54)
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
L
H
L
L
H
H
CPST AE
CPST AF
(Pin55)
(Pin54)
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
L
H
H
L
H
H
CTRL A2
CTRL B
(Pin64)
(Pin65)
H
H
H
H
H
H
H
H
H
H
H
H
H
H
CPST AG
(Pin53)
L
L
L
L
L
L
H
CPST AG
(Pin53)
H
H
H
H
H
L
H
13

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