Pioneer C-AX10 Service Manual page 89

• Input switch (Analog to Digital)
Receive a switching data from
the system control microcomputer
Start
(IC2109).
Front ch : IC1703 and IC1803
pins 42 and 43 = L
Mute ON
Excepting front ch : IC1902 and IC2002
pin 15 = H
IC1603-pin 9
Input "L" to RX.
DIR initialized
IC2118-pin 4
XADC = H
Input switch
IC1405-pins 9 to 11
Control the SELA to SELC.
IC1105, IC2704 and IC2804
A/D
pin 10 = L to H
power down
DIR lock ?
No
&
PLL lock ?
Yes
State of IC1603-pins 2, 3 and 27
fs check (However, this state is between 50 ms
since DIR locks.)
IC1501
Center DSP
Transmit the program and coefficient
setup
IC1701, IC1702, IC1801 and IC1802
Front DSP
Transmit the coefficient
coefficient transmission
Front ch : IC1703 and IC1803
pins 42 and 43 = L
Cancel the mute
Excepting front ch : IC1902 and IC2002
pin 15 = H
End
DIR : IC1603-pin 25 = "L" ?
PLL : IC1618-pin 15 = "H" ?
• Input switch (Digital to Analog)
Receive a switching data from
the system control microcomputer
Start
(IC2109).
Front ch : IC1703 and IC1803
pins 42 and 43 = H
Mute ON
Excepting front ch : IC1902 and IC2002
pin 15 = L
IC2118-pin 4
XADC = L
Input switch
IC2118-pin 7
A/D
X24M = L (24MHz oscillation)
calibration
IC1105, IC2704 and IC2804
pin 10 = L to H
IC1501
Center DSP
Transmit the program and coefficient
setup
IC1701, IC1702, IC1801 and IC1802
Front DSP
Transmit the coefficient
coefficient transmission
Front ch : IC1703 and IC1803
pins 42 and 43 = L
Cancel the mute
Excepting front ch : IC1902 and IC2002
pin 15 = H
End
C-AX10
89