TROUBLESHOOTING & REPAIR | ||
|
|
VOLTAGE BOARD TRANSFORMER TEST (Continued)
24VAC
SECONDARY TEST POINTS
PIN #9 | { |
PIN #8 |
|
VOLTAGE
VOLTAGE BOARD
TRANSFORMER
FIGURE F.4 TRANSFORMER TEST POINTS
Return to Section
Return to Section TOC
Return to Master
Return to Master TOC
7.Using the 115VAC supply carefully apply 115VAC to pins #8 and #9 in the nine pin molex plug cavity on the voltage board. See Figure F.4 Make sure the board and leads are insulated from each other and any metal conductors.
8.Using the voltmeter check for approximately 24VAC at the sec- ondary test points. See Figure F.4
Note: The secondary voltage will vary with the input primary voltage. The insulating material will have to be removed from the secondary test points to insure that the meter probes make good electrical contact.
9.If the secondary voltage is correct the transformer is functioning proper- ly.
10.If the secondary voltage is low or not present the transformer may be faulty.
11.Carefully remove the 115VAC sup- ply from the voltage board.
12.Install the voltage board and con- nect the molex plugs.
13.Close and secure the access door.
