TOC
TOC
TROUBLESHOOTING AND REPAIR | ||
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AUXILIARY AND FIELD WINDING TEST (continued)
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FIGURE F.4 – CONTROL PC BOARD
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| Lead #219 (J1, Pin 5) |
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| CONTROL |
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| D10 | B |
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| B2 |
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| D16 | D21 | DZ10 | R11 C39 R44 R51 | R52 C24 C23 C22 R10 | C13 | R91 R99 | C14 | 1 |
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| 6 |
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| J1 |
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| TP1 |
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| R71 |
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| 7 |
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| 12 |
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| C1 |
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| DZ8 |
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| R72 |
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R96 |
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| R87 |
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| R95 |
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| TP2 |
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| R73 |
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| R82 C19 | X3 |
| C42 C43 C41 |
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| R74 |
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| R94 |
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| R41 |
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| R89 |
| D28 | D15 | ||||||||||||
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| R7 |
| R100 | R101 |
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| R62 |
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| R67 | ||||||||||||||
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| D |
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| R34 |
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| R68 | |||||||||||||||||
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R97 | R65 R66 |
| C2 |
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| R81 R39 C30 R31 D11 |
| R43 |
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| R69 |
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| X5 |
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| R70 |
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| R49 |
| R53 | D14 | DZ3 |
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| R32 |
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| D3 |
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| C |
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| R16 |
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| C26 |
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| C36 |
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| FTP1 | ||
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| R17 | R18 R20 C40 C28 R33 |
| R23 |
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| R57 |
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| C37 |
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C12 |
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| R47 |
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| B1 |
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| X4 |
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| R56 |
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| C27 |
| Q6 |
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| Q3 |
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| Q1 |
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| DZ1 DZ9 |
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| A |
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| DZ7 |
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| D1 | R5 |
| R88 |
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R15 R14 | C3 | R13 | R76 R77 | D18 | R75 R78 |
| X1 |
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| C10 | D2 |
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| R83 |
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| C4 |
| C7 | R84 |
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| D9 |
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| R85 |
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| C38 D19 |
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| DZ5 |
| Q4 |
| R21 |
| R4 |
| R58 |
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| J2 |
| R98 | C32 R79 C31 R45 R12 R80 R40 C35 R102 | DZ2 | D4 R19 R42 R29 DZ11 | DZ4 | R48 R46 | Q5 | C29 |
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FIELD VOLTAGE (Leads #7 & #9)
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FIELD WINDING
1.Remove the fuel cap and lift bail rubber gasket. With a 5/16” nut driver or socket, remove the case top and left side; then reinstall the fuel cap.
2.Connect the volt/ohmmeter probes to leads #7 and #9 where they connect to the Control P.C. Board.
3.Start the engine and run it at high idle (3700 RPM).
4.Set the output control to the maximum position (position 10).
5.Check the AC voltage reading. It should be between 41 and 45 VAC.
If any one or more of the readings are missing or not within specifications, then check for loose or broken wires between the test points and the stator windings. See the Wiring Diagram. Make sure the windings are NOT grounded internally to the stator iron. If the leads are intact, then the stator may be faulty. Replace the stator.
If the voltage readings are within specifications, then the windings are good and functioning properly.
6.Reinstall the case side, case top, fuel cap, and lift bail gasket