试机样张为单色平网，黄、黑、青三色组印出的平网都非常正常，网点整齐、饱满，但品红色组的样张在离叼口270mm处有一条明显的墨杠，且位置固定。根据以往的维修经验，首先判断是齿轮杠，可能是某个传动齿轮的轮齿变形造成的。于是，仔细检查了印版滚筒、橡皮滚筒、压印滚筒及相邻传纸滚筒上的齿轮，发现所有的齿轮都完好无损。会不会是刚换上的十几个小齿轮引起的呢，不会。

1232X-BNB-A2E-6GP-24R
1232X-BNB-A2E-6P-24R
1232X-BNB-A2F-6GP-24J
1232X-BNB-A2F-6P-24R
1232X-BNB-A2G-6P-24R
1232X-BNB-A2J-6GP-24R
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21VD011A3AYYAHC
23B-D010C10ENN-S1-S23
2711P-K12C15D1
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2030-EUJF
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2711-K10C20
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20G11GC043AA0NNNNN
21T-322515-A01
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23B-D010C10DNN-P6
23B-D010C10DNN-P6T
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23B-D010D10DNN-E22-P6-R5
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因为如果是小齿轮引起的墨杠，应该是数条间距均匀的细墨杠，而不应该是一条位置固定的粗墨杠。于是，把注意力转移到靠版水辊上。这种型号的机器有2根靠版水辊，靠版水辊落下后应始终靠在印版滚筒上，但在滚筒缺口处水辊的位置会稍微靠近滚筒体一些，如果压力过大，则会引起水辊跳动。这条墨杠会不会就是由靠版水辊的跳动引起的呢?我们将2根靠版水辊的压力都减轻了些，但再次开机试印，墨杠仍然存在。

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23B-D024D104NN-P6T
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1232XA-25
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1232XAD-25
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1232XB-25
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1232XB-25R
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1232XCD-25J
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1321-3TH075-AC
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