PIONEER PD-F1009
Manual de Servicio

PD-F1009

7.1.3 EXPLANATION OF DISC DETECTION
<<< Rack section >>>
User Display
None

1. Detection of the rack position
There are two types of slits on the rear of the rack, and their combination is used to find which disc has been selected during rack rotation. The input ports (DCNT, DPOS) are as follows.
Disc No. DCNT DPOS
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Display

Contents
� When the position of the selection mechanism just before switching to disc selection operation os DCNT terminal = "L". (Normally, DCNT terminal = "H" exists when the selection mechanism is stopped, so that it can be assumed that the position of the mechanism has deviated for some reason. There is the possibility that a position deviation of the mechanism can cause a defect of the mechanism.)

Disc No. DCNT DPOS

19 20

21 22

23 24 25 26 27 28 29 30

31 32 33 34 35 36

None

� At the time of movement of the selection mechanism, a deviation has occurred between the present position of the disc and the disc position according to position detection. (It can be assumed that the waveform at the DCNT terminal and/or at the DPOS terminal has been miscounted. When a miscount occurs, a discrepancy occurs between the displayed disc No. and the counted disc position.) � When the position of the mechanism became DCNT terminal = "L" during disc loading. (Normally, DCNT terminal = "H" exists when the selection mechanism is stopped, so that it can be assumed that the position of the mechanism has deviated for some reason. There is the possibility that a position deviation of the mechanism can cause a defect of the mechanism.)

Disc No. DCNT DPOS

37 38

39 40

41 42 43 44 45 46 47 48

49 50 51 52 53 54

Disc No. DCNT DPOS

55 56

57 58

59 60 61 62 63 64 65 66

67 68 69 70 71 72

Disc No. DCNT DPOS Disc No. DCNT DPOS Disc No. DCNT DPOS

73 74

75 76

77 78 79 80 81 82 83 84

85 86 87 88 89 90

None

91 92

93 94

95 96 97 98 99 100 101 102 103 104 105 106 107 108

109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126

None

� At the time of shifting to a different disc after play completion, the pickup does not return to the innermost circumference.

Disc No. DCNT DPOS

127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144

<<< Hood Section >>>
User Display Display Contents
The hood did not open within a fixed time. The hood switch was broken. The hood did not close within a fixed time. The hood switch was broken. None It was tried to force the closed hood open. The hood switch was broken.
Disc No. DCNT DPOS
145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162

Disc No. DCNT DPOS

163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180

Disc No. DCNT DPOS

181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198

Disc No. DCNT DPOS

199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216

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