VRX775VD
VRX776VD
- 14 -
EXPLANATION OF IC
051-5348-90
BA7652AF-E2
3-input Video Switch with Buffer Amplifier
Truth Table
OUT ( pin 7 )
CNT 1 ( pin 2 )
CNT 2 ( pin 4 )
= IN 1 ( pin 1 )
L
L
= IN 2 ( pin 3 )
H
L
= IN 3 ( pin 5 )
L
H
MUTE
H
H
052-7078-10
uPD703276YGJ-512-UEN-A
System Controller
is for legal or rightholder-authorized copying only. Don't steal
music.
iPod is a trademark of Apple Computer, Inc., registered in the U.S.
and other countries.
TerminalDescription
pin
1: A Vref 0
: - : Reference voltage for the internal ADC.
pin
2: A VSS
: - : Negative voltage supply for analog section.
pin
3: SYS ACC
: O : ACC detect signal output.
pin
4: SUB MUTE
: O : Sub-zone audio mute signal output.
pin
5: A Vref 1
: - : Reference voltage for the internal DAC.
pin
6: RDS CLK
: IN : Not in use.
pin
7: AV ON
: O : The ON command output to the power
supply section.
pin
8: FLASH
: IN : The signal input for the flash memory con-
trol.
pin
9: VDD
: - : Positive voltage supply.
pin 10: REG C
: - : The capacitor connection.
pin 11: GND
: - : Ground.
pin 12: X in
: IN : Crystal connection. Main 31.4MHz.
pin 13: X out
: O : Crystal connection. Main 31.4MHz.
pin 14: RESET
: IN : Reset signal input.
pin 15: XT I
: IN : Crystal connection. Sub 32.758kHz.
pin 16: XT O
: O : Crystal connection. Sub 32.758kHz.
pin 17: POWER KEY
: IN : Power key input.
pin 18: BU 9V DET
: IN : Backup 9V detection.
pin 19: BU 6V DET
: IN : Backup 6V detection.
pin 20: NU
: IN : Not in use.
pin 21: OSD INT
: IN : The interrupt signal input for the on
screen display.
pin 22: TUN SDA
:I/O: I2BUS serial data input/output for the tun-
er pack.
pin 23: TUN SCL
: O : I2BUS serial clock output for the tuner
pack.
pin 24: TP REQ
: IN : The request signal from the touch panel
micro computer.
pin 25: iPod/FLASH O
: O : Serial data output to iPod or flash memo-
ry.
pin 26: iPod/FLASH IN : IN : Serial data input from iPod or flash mem-
ory.
pin 27: TP RST
: O : The reset pulse output to the touch panel
micro computer.
pin 28: DIMMER
: O : PWM output.
1
IN 1
4
CNT 2
3
IN 2
2
CNT 1
8 GND
5 IN 3
6 VCC
7 OUT
Logic
Not recognize iPod
work only in ipod?
OK
OK
NG
Check
the cable connection
Defective of
Q626, Q627, Q628
IC604, IC501
Malfuntion of iPod
or confirm
the charge situation
Defective of
the cable, J603
NG
Check
the iPod DET
OK
Not charge iPod
Defective of
ACC IDENT,
the output of iPod
NG
Confirm
the cable connection
OK
OK
NG
Does not
a protection circuit
work?
Defective of
Q629, Q630, IC501
Defective of
the cable, J603
Confirm the connection
of AMP-REM, A-ANT.
Confirmation by
a consumption current
NG
Not recognize
Ce-NET machinery connection
Confirm of
the cable connection
OK
OK
NG
Check
the power supply
of J604
Defective of
Q631, IC605, IC501
Defective of J604
Defective of F601
NG
iPod section
Ce-NET section