Pioneer KEH-P8800R-W/EW, Service Manual

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57
KEH-P8800R,P8800R-W,P8850
IC's marked by* are MOS type.
Be careful in handling them because they are very
liable to be damaged by electrostatic induction.
*PD5495A,PD5496A
30
31
50
51 80
81
100
1
Pin No. Pin Name I/O Function and Operation
64 VSS4 GND
65 VCK O E-VOL clock output
66 VDT I E-VOL data input
67 VST I E-VOL strobe pulse input
68 ROMCS O ROM correction chip select output
69-72 NC Not used
73
bsens
I Back up power sense input
74
asens
I ACC power sense input
75 NC Not used
76 DRELAY O External relay output
77 LOCH O Local “H” output
78 LOCL O Local “L” output
79 TAPEMUTE O RINT mute output
80 NC Not used
81 FM/AM O FM/AM power select output
82
tmute
O Tuner mute output
83
drst
O RDS decoder reset output
84
rdslk
I RDS lock signal input
85 RDT I RDS data input
86 DRSENS I Door open/close sense input
87 DRSYS O Door system select output
88 TESTIN I Test mode IN/test enable
89 SK I SK signal input
90
currq
O Tuner voltage FIX output
91 LEVELR I Level meter “R“ AD input
92 LEVELL I Level meter “L“ AD input
93 NC Not used
94 SDBW I SD input
95 NL I Noise level input
96 VSS5 GND
97 SL I Signal level input
98 VREF A/D converter reference voltage
99 VCC4 5V
100 TUNPDI I PLL data input