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Service Manual that I received was very helpful to me. Thank you.
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The manual is well organized and is easy to read. The chapters are following normal way to proceed.
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This scanned manual is well done in that most all the pages except for one is straight and clear- the way I would do them. One page was upside down but that happens. For the money that is charged on this site you get a pretty good deal. Now with complex repairs, I still prefer to us paper manuals which I have to buy at stereomanuals but the one I got here was much less than the $45 he was charging but this is a larger than normal manual for three different units. I am a picky manual user because I have used original manuals from Sony and Teac.
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Very useful service manual, was exactly what i needed.Good quality,reasonable price.Thank you.
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Acurate informations inside the SM and I could repair my old Sansui SC-3330 without any problems. Thanks.
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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