Pioneer VSX-45TX Service Manual page 138

1
QQ
BU4094BCF (MAIN CONTROL ASSY: IC502)
3 7 63 1515 0
• Expansion IC
A
Pin Function
No. Pin Name
1 DEM_STP
2 DEM_RST
3 NJM2279_SW1
4 NJM2279_SW2
5 NJM2596_SW2
6 NJM2596_SW3
7 NJM2596_SW4
8 NJM2596_SW5
B
BU4094BCF (MAIN CONTROL ASSY: IC503)
• Expansion IC
C
Pin Function
No. Pin Name
1 OSD ON
2 TC9215_C34
TE
L 13942296513
3 PHONO GAIN
4 DSDM
5 TC74HC4053_INH
6 TC74HC4053_A
7 FAN DRIVE
8 LOFAN
D
E
www
F
138
1
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2
Demodulator oscillation OFF/ON
Demodulator reset L: RESET
NJM2279 video control of sub room system
NJM2596 video control of main system
ON at OSD on
Switch the DSP/DIRECT/MULTI CH IN of surround signal H: Multi ch input path
"H" at PHONO equalizer ON
For SACD "L" fixed
Select the Component/D4 input (2 inputs → 1 output)
ON when rotates the FAN
Not used "H" fixed
x ao
. i
2
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3
Pin Function
Pin Function
Q Q
3 6 7
u163
y
VSX-45TX
3
4
2 9 9 4
8
Active
Active
1 3 1 5 0 5 8 2 9
m
co
.
4
2 8
9 9
H
L
H
H
H
H
H
9 4 2 8 9 9
H
H