KRF-X7775D/X7775D-S/VR-5080/5090
10
CIRCUIT DESCRIPTION
TV POWER
TV SENS.(34Pin)
ON
H
OFF
L
SELECTOR
RELAY CONT.(63Pin)
PHONO
TUNER
CD1
MD/TAPE1
0
CD-R
CD2/TAPE2 MONITOR
VIDEO1
VIDEO2
VIDEO3
1
VIDEO4
DVD
AV/AUX
OPEN
CLOSE
SENS(59Pin) SENS(58Pin)
END OF OPEN ACTION
0
1
END OF CLOSE ACTION
1
0
DOOR OUT1(42Pin) DOOR OUT2(41Pin)
OPEN
1
0
CLOSE
0
1
STOP
0
0
BREAK
1
1
Fan
10W(91Pin)
1W(92Pin)
THERMAL SW(55Pin)
FAN ON/OFF(90Pin)
FAN H/L(89Pin)
FAN STOP
H
H
L
0
1
FAN LOW SPEED
H
L
L
1
1
FAN HI SPEED
L
L
L
1
0
FAN LOW SPEED
H
H
H
1
1
H
L
H
1
1
FAN HI SPEED
L
L
H
1
0
7. Description of the Circuit Control
7-1 Fan Control (X13,IC3)
7-2 Door Open/Close Control : FL Driver(X25,IC1)
KRF-X9995D/VR-5900 only
7-3 Open Close Sensor(X13,IC3 : Main u-com)
KRF-X9995D/VR-5900 only
7-4 Relay Control : X13,IC3(Main u-com)
7-5 IR Remote Control
X25,IC401 X25,IC401 IR SELECT
RF IN
IR IN
X13,IC3
(7Pin)
(6Pin)
(93Pin)
WITH RF
RF ON
X
O
0
VERSION
RF OFF
O
X
1
FRONT
X
O
0
WITHOUT
IR ON
RF VERSION FRONT
O
X
1
IR OFF
7-6 P Macro Video Switch(X13,IC505)
P MACRO
P Macro
P Macro
SELECTOR
A(3Pin)
B(4Pin)
C(5Pin)
VIDEO1
0
0
0
VIDEO2
0
1
0
VIDEO3
1
0
0
VIDEO4
1
1
0
DVD
0
0
1
7-7 Video/TV Detection : X13,IC3
Video Detection
Video Signal
P Macro IN(62Pin)
Yes
H
No
L
TV Detection
X13, IC3
Main u -Com
X25,IC11
X08, IC5
X08, IC7
Digital
Selector
A/D
X08, IC11,14
IC17, 20
D/A
X13
X08, IC6
Video
Selector
DIR
IC502,504,505
IC603,604
IC701~703
X08, IC31
D S P
X08, IC43
Sub Microcomputer
8. Sub microcomputer: uPD784224K507(X08, IC43)
8-1 Sub microcomputerperiphery block diagram
