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TROUBLESHOOTING & REPAIR
FIRING BOARD TEST (continued)
FIGURE F.4 – FIRING BOARD TRIGGER CIRCUIT TEST POINTS AND LEDs
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LED7 | LED8 | LED9 |
|
|
| (205) 8 | |
|
| (206) 7 | |
|
| (207) 6 | |
|
| (208) 5 | |
LED1 |
| LED2 | 4 |
| 3 | ||
|
|
| 2 |
|
|
| 1 |
|
| LED10 |
|
LED3 |
| LED4 |
|
LED6
LED5
J5
16 (204)
15 (203)
14
13 (231)
12 (215)
11
10 9
J6
J7 |
J4 |
FIRING BOARD
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TEST PROCEDURE
1.Disconnect the AC input power to the DC- 655 machine.
2.Locate the firing board on the left side of the control box.
3.Perform a visual inspection on the firing board to see if there are any loose or faulty connections or physical damage.
4.Connect the correct AC input power to the
WARNING
ELECTRIC SHOCK can kill.
• Do not touch electrically hot parts.
5.Turn the power switch (SW1) to the ON position.
6.LEDs 7, 8 and 9 should be lit and equally bright. See Figure F.4 to locate the LEDs. Use Table F.1 to check operation of LEDs 7, 8, and 9. The three LEDs should be of equal intensity.
