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Phenomenon | Condition | Cause | Level | Check point & Method | Repair Method |
5. | Intermittent | ①Wear or | A | ·Check the teeth of | ·If worn or damaged, |
Intermittently | changes in | damage of |
| each gear and of the | replace the |
defective | character width | Lead Cam or |
| Lead Cam for wear | defective gear or |
character |
| the gear |
| and damage | the Lead Cam |
width |
| ②Defective | B | See cause ⑤ of phenomenon 2 | |
|
| input charge |
| ||
|
| pulse |
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|
6. Motor |
| ①Defective | B | ·Use an oscilloscope to | ·Replace the R(L) |
rotation does |
| R·L reset |
| check if a signal is | reset detector sub |
it stop |
| detector sub |
| generated from of the | Assy if no signal is |
|
| Assy |
| R(L) reset detector | generated |
|
|
|
| sub Assy by rotating |
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|
|
| the Lead Cam |
|
|
| ②Defective | B | See cause ② of phenomenon 1 | |
|
| motor drive |
| ||
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|
| (Check input signal stop ⇒ high) | ||
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| signal |
| ||
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| |
7. Paper is | All Printing is | ①Defective | A | ·Check the width, | ·Use the standard |
not feed | done at one | paper supply |
| length and thickness | paper |
| line without the |
|
| of the paper | ·Repair each supply |
| paper being |
|
| ·Check the paper | mechanism so that |
| feed |
|
| feeding path | paper supply is |
|
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|
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| smooth |
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|
| ·Check the end part |
|
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| of paper |
|
| ②Detect in | B | ·Apply 24V to motor | ·Substitute if motor is |
|
| step motor |
| and check to turn | not in turning |
|
| ③In proper | B | ·Check flow of | ·In case of no flow of |
|
| connection or |
| electricity between | electricity, |
|
| damage of |
| Pertinent terminal | substitute Assy for |
|
| terminal |
|
| main circular |
|
| connector in |
|
| ·In case of no |
|
| step motor, or |
|
| connection, try to |
|
| cutting of wise |
|
| connect with |
|
| or damaged |
|
| leading |
|
| connected part |
|
| ·In case of cutting |
|
|
|
|
| wire or damaged, |
|
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|
|
| substitute step |
|
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|
|
| motor |
|
| ④Occurrence | A | See cause ⑤ of | phenomenon 1 |
|
| of paper jam |
|
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|
| ⑤Wear or | B | ·Check the gear for | ·If there is wear or |
|
| damage of the |
| wear or damage | damage, replace |
|
| teeth of the |
|
| the pertinent gear |
|
| gears |
|
|
|
|
| ⑥Wear of the | B | ·Check the surface of | ·If the Rubber Roller |
|
| Rubber Roller |
| the Rubber Roller for | is worn, replace it |
|
|
|
| wear |
|
|
| ⑦Deformation | B | ·Check if the Shaft | ·If deformed, replace |
|
| of the spring |
| Roller has become | it with a new spring |
|
| Roller |
| deformed |
|
|
| ⑧The Shaft | B | ·Check to be | ·If deformed, replace |
|
| Roller rotates |
| something in Gear | the pertinent Shaft |
|
| malfunction |
| and to be well touched | Roller |
|
| ⑨Turning | B | ·Check to be | ·Remove dusts |
|
| direction of |
| something in gear and | removed wire |
|
| Gear |
| to be well touched |
|
Rev. 3.02 | - 70 - |