8. ELECTRIC MECHANISM
Error status | #8 Error code appears on the display window when the foot switch is depressed. | ||||
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Probable causes |
| Check/ repair/ adjust | Parts to be replaced | ||
5. Head position | sensor is | a. Separate P1A (ORG1) connector on the | Head position sensor | ||
defective | when | the | feed | main circuit board. Measure the |
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mechanism does | not | move | resistance between pins 7 and 8 in the |
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and error code | connector on the cord. |
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on the display window. |
| When machine head is horizontal: If the | Main circuit board | ||
([E.16] | resistance is 0Ω, it is not defective. |
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| When machine head is tilted back: If the |
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| resistance is ∞Ω, it is not defective. |
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| b. If item a cause no problem, the main |
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| circuit board is defective. |
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| 3640Q |
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Error status | #9 Work clamp does not rise. |
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Probable causes |
| Check/ repair/ adjust | Parts to be replaced | ||
1. Foot switch and cord defec- | (Make sure that the power is turned off.) | Foot switch | |||
tive |
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| • Remove the connector for foot switch |
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| connected to the outside of the contorl |
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| box, and check the continuity between |
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(First | Connector on the cord | pins 1 and 2, and pins 7 and 8 in the |
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connector on the cord. (For pneumatic |
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position) |
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| specification, check the continuity be- |
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Work |
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clamp |
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| tween pins 3 and 4.) |
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| The continuity in each case should be |
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(Second |
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| normally ∞ Ω or 0 Ω when the foot switch |
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position) |
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| is depressed. |
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Start |
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Second position work clamp |
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(Pneumatic only) |
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| 3636Q |
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<Solenoid specifications> |
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2. Work clamp is not lowered | a. If it is not lowered due to the mechanical |
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when error code | lock, see |
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appears | on the display | the presser solenoid” for adjustment. |
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window. |
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| b. Open the top cover, turn on the power | Work clamp sensor |
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| switch, and press the tip of the plunger of |
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| the presser solenoid. If the work clamp |
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| sensor LED is turned on and off, it is OK. |
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| c. Make sure P1 (ORG) connector on the |
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| main circuit board and work clamp sensor |
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| are plugged in. |
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| d. See | Main circuit board |
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| DIP switch input” to make sure that the |
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| work clamp sensor is connected. |
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| If item b causes no problem and item c |
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| results in defective sensor input, either |
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| the cord connection is poor or the main |
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| circuit board is defective. |
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183 |