IBM 6400-I15 Maintenance Manual - Page 68
Power Stacker, Print Quality, Printer Operation, Vertical misalignment of characters
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Page 68 highlights
Symptom Troubleshooting Procedure Printer does not complete IML Power Stacker Printer does not detect presence of power stacker Stacker chatters at upper or lower limit Stacker does not stack properly Stacker elevator does not move Stacker elevator moves by itself Stacker limit switch check Stacker motor check Stacker not operating Print Quality Characters or dots are missing, smeared, too light, or too dark Horizontal misalignment of characters (Dots or characters move left or right from dot row to dot row or line to line) Randomly misplaced dots Vertical misalignment of characters: 1. Dots or characters move up or down from dot row to dot row or line to line 2. Incorrect spacing from dot row to dot row or line to line 3. Characters randomly compressed and/or enlarged Printer Operation Downloads consistently fail Flash SIMM won't copy Paper feeds poorly Printer does not print self tests Page 122 Page 123 Page 128 Page 128 Page 128 Page 129 Page 129 Page 130 Page 123 Page 114 Page 118 Page 125 Page 132 Page 117 Page 118 Page 121 Page 124 68 Troubleshooting
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