Pioneer DEH-P946, Service Manual

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99
DEX-P1R,DEH-P946,DEX-P1
IC's marked by* are MOS type.
Be careful in handling them because they are very
liable to be damaged by electrostatic induction.
*UPD63702AGF
Pin No. Pin Name I/O Function and Operation
38 LOCK O Indicates "H" when the synchronized pattern detection signal matches the
frame counter output at the EFM recovery modulation, and "L" when they
don't match
39 WFCK O Minute-cycle signal for the bit clock, the signal indicates the cycle of 1 frame
(approx. 7.35kHz)
40 RFCK O Minute-cycle signal for the clock, the signal indicates cycle of 1 frame
(approx. 7.35kHz)
41 D.GND GND for the logic circuit
42,43 TEST0,1 I Test pins
44,45 TM2, TM4 I Pins for controlling regeneration at fast speed of 2- or 4-fold
46-49 T4-T7 I Test pins
50,51 C1D1, C1D2 O Output pin for indicating the C1 error correction results
52-54 C2D1-C2D3 O Output pin for indicating the C2 error correction results
55 D.VDD Supplies current of positive voltage to the logic circuit
56 SFSY O Outputs 1 word of the subcode. Generally, 1 cycle is approx 136 micro seconds
57 SBSY O The signal indicates the beginning of the subcode block. The SFSY signal is
output at high level every 98 times
58 SBSO O Output pin for the subcode data
59 SBCK I Input pin for the clock signal for read-out of the subcode data
60 A.GND GND for the analog circuit
61 MD O Output pin for the spindle drive
62 SD O Output pin for the sled drive
63 TD O Output pin for the tracking drive
64 FD O Output pin for the focus drive
65 FBAL O Output pin for the focus balance control
66 TBAL O Output pin for the tracking balance control
67 A.VDD Supplies current of positive voltage to the analog circuit
68 TBC I Switches coefficient banks for the tracking filter
69 EFM I Input pin for the EFM signal
70 HOLD I Input pin for the hold control signal
71 RFOK I Input pin for the RFOK signal
72 MIRR I Input pin for the MIRR signal
73 A.GND GND for the analog circuit
74 HOME I Home position detector input
75 VR1 I The signal input through these pins is digitized to 8-bit by the A/D converter,
which by operation of the assigned register, can be read into the microcomputer
76 FE I Inputs a focus-error signal from the RF amplifier
77 TE I Inputs a tracking-error signal from the RF amplifier
78 TEC I Input pin for the tracking comparator
79 REFOUT O Output point for midpoint potential for the A/D converter for the LSI portion
80 A.VDD Supplies current of accurate voltage to the analog circuit
24
25
40
41
64
65
80
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