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TROUBLESHOOTING & REPAIR
ANALOG POWER PC BOARD VOLTAGE TEST (continued)
FIGURE F.14 – ANALOG POWER PC BOARD
RESISTOR R3
C1(0N BLOWER
SIDE OF
BAFFLER)
C2
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|
|
| PCB2 | |
| 13 1J41 to POS TERMINAL ON C2 - 85V SUPPLY | 1 | ANALOG POWER | |
| PC BOARD | |||
CONTROL CIRCUIT | J41 | |||
14 2J41 to NEG TERMINAL ON C2 - 85V SUPPLY | ||||
INPUT POWER |
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| ||
|
|
| ||
|
| 1 |
| |
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| J42 |
|
PCB5
J60
1
J61
1
J62
1
3 | 1 |
4 | 2 |
J41 | |
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GND K
6 1
7 
2
GND L
8 
3
9 
4
10
5
J42
BLOWER BAFFLE - SIDE OPPOSITE BLOWER
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TEST PROCEDURE
1.Turn the engine off.
2.Perform the Case Cover Removal proce- dure.
3.Locate plugs J41 and J42 from the Analog Power PC board. See Figure F.14.
4.Start the engine and run it at high idle (3700 RPM) with no load.
5.Check for the correct Analog Power PC board input voltage:
a.Set the volt/ohmmeter to the Volts DC position.
b.Place the negative probe on J41 pin 2 and the positive probe on J41 pin 1.
c.The reading should be between 75 and 85 VDC.
If the reading is not correct, the stator output may be incorrect, the rectifier output may be incorrect, the capacitors may be faulty or the Power Module PC board may be faulty. Perform the Stator Voltage Test, the Output Rectifier Bridge Test, and the Power Module PC Board Test. The capacitors C1 and C2 may be faulty. Test and replace if necessary.
6.Check for the correct output voltage readings per Table F.1. If any of the readings are not correct, the Analog Power PC board may be faulty.
