Quantcast Table 2-3. Troubleshooting - TM-11-6130-429-400032

 

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Table 2-2. Converter Bench Test-Continued
Up
TM-11-6130-429-40 Converter Direct Current CV=3734/T Manual
Next
Figure 2-3. Troubleshooting Test Setup #1.
TM 11-6130-429-40
Table 2-2. Converter Bench Test-Continued
Indication
Procedure
Step
19
a. Increase output current to 75 ADC.
b. Decrease input voltage to 21 VDC.
c. Measure output voltage at front panel (+5V P1 and +5V RTN).
Voltage shall be +5V and 0.1V.
20
Using the oscilloscope, measure the output ripple at P1 connector.
Ripple voltage shall be less than 150 MV.
Table 2-3. Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTION ACTION
1. BLOWER NOT OPERATING, FAULT LAMP NOT LIT, ON/OFF SWITCH OFF.
Using multimeter, check continuity of Input EMI Filter and related components.
Repair wiring/replace defective components.
2. BLOWER NOT OPERATING, FAULT LAMP LIGHTED, ON/OFF SWITCH OFF.
Using multimeter, check continuity from P1-A1/P2-A1 to + terminal of blower B1 and from P1-A2/P2-A2 to - terminal of
B1.
Repair wiring/replace defective blower B1.
3. BLOWER OPERATES, FAULT LAMP NOT LIGHTED, ON/OFF SWITCH OFF.
Step 1. Using multimeter check continuity of bulb in FAULT lamp holder XDS1.
Replace defective bulb.
Step 2. Using multimeter, check continuity of wiring from L2B pin 4 to pin 1 of FAULT lamp DS1 and L2A pin 2 to pin 1 of
DS1.
Repair defective wiring/replace defective S1, R1 or lampholder XDS1.
4. BLOWER OPERATES, FAULT LAMP MAY OR MAY NOT BE LIGHTED, ON/OFF SWITCH ON, NO OUTPUT.
Step 1. Input EMI Filter and Related Components (P/O Main Frame) Check. Using multimeter, check continuity from P1-A1
and P2-A1 to J2-2 and from P1-A2 and P2-A2 to J2-1, with ON/OFF switch (S1) ON.
Repair wiring/replace S1. Replace defective component.
NOTE
The following tests require preliminary setup procedures.
PRELIMINARY SETUP PROCEDURES
1. Set converter ON/OFF switch to OFF.
2. Setup equipment as shown in figure 2-3.
3. Position cooling fan to circulate air around heatsink and rear panel.
4. Set test equipment controls as follows.
2-6

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