Pioneer FX-MG8506ZT, Service Manual

Page: 92 / 102

92
FX-MG8506ZT,MG8506ZT-91,MG8606ZT,MG8606ZT-91
*PD5556B
IC's marked by* are MOS type.
Be careful in handling them because they are very
liable to be damaged by electrostatic induction.
Pin No. Pin Name I/O Function and Operation
63
kst$
O Key strobe output
64 VSS GND
65 KST3 O Key strobe output
66
kst@
O Key strobe output
67
kst!
O Key strobe output
68
kst)
O Key strobe output
69 MS I Music sense input
70
f
R O Head forward/reverse select output
71 PLAY O MS gain select output
72
mtl
I Cassette mechanism tape select input
73
cdej
I CD eject key sense input
74
mdej
I MD eject key sense input
75
csej
I Tape eject key sense input
76 NR O Dolby NR ON/OFF select output
77 CSLOAD I Tape loading detect input
78 POS I Cassette mechanism position sense input
79 RES I Cassette mechanism reverse end sense input
80 NES I Cassette mechanism forward end sense input
81 TEST I Test mode input
82 SC2 O Cassette mechanism sub motor control output
83 SC1 O Cassette mechanism sub motor control output
84 CM O Cassette mechanism capstan motor control output
85
stby
O Stand-by output
86 ENC2- I Encoder 2 (-) input
87 ENC2+ I Encoder 2 (+) input
88
power
I POWER key input
89 BASS I A/D converter input from BASS volume (not used)
90 TRE I A/D converter input from TREBLE volume (not used)
91 MID I A/D converter input from MID volume (not used)
92 FAD I A/D converter input from FADER volume (not used)
93 BAL I A/D converter input from BALANCE volume (not used)
94 ILL- I Rheostat signal input
95 NC Not used
96 AVSS A/D GND
97 ANO GND
98 VREF I A/D converter reference voltage input
99 AVCC A/D VCC
100 EDI I Data input from EEPROM
30
31 50
51
80
81 100
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