Return to Master
Return to Master TOC
Return to Master TOC
Return to Master TOC
B.Check for loose or broken leads between the following pins:
P83 - pin L and J27 - pin 1 on the control board (lead #111A)
P83 - pin M and J27 - pin 4 on the control board (lead #112A)
C.Make sure that plug J27 is plugged into the control board securely and that none of its pins are loose.
D.Reconnect the wire feeder to the wire feeder 1 amphenol (P83).
9.Perform the following test for faults on the serial loop circuitry between wire feeder 2 amphenol (P82) and the control board.
A.Disconnect the wire feeder from the wire feeder 2 amphenol (P82).
B.Check for loose or broken leads between the following pins:
P82 - pin L and J28 - pin 1 on the control board (lead #117A)
P82 - pin M and J28 - pin 4 on the control board (lead #118A)
C.Make sure that plug J28 is plugged into the control board securely and that none of its pins are loose.
D.Reconnect the wire feeder to the wire feeder 2 amphenol (P82).
10.Perform the following test for faults on the serial loop circuitry between the display board and the control board.
A.Check for loose or broken leads between the following pins:
J26 - pin 3 on the control board and J14 - pin 6 on the display board (lead #263)
J26 - pin 4 on the control board and J14 - pin 3 on the display board (lead #264)
B.Make sure that plug J26 is plugged into the control board securely and that none of its pins are loose. Also make sure that plug J14 is securely plugged into the dis- play board and that none of its pins are loose.
11.Perform the following test for faults on the serial loop circuitry 40 mA current supply.
A.Check for loose or broken leads between the following pins:
J22 - pin 5 on the control board and J44 - pin 5 on the power board (lead #5R)
J22 - pin 4 on the control board and J44 - pin 4 on the power board (lead #5W)
B.Make sure that plug J22 is plugged into the control board securely and that none of its pins are loose. Also make sure that plug J44 is securely plugged into the power board and that none of its pins are loose.
With the DC voltmeter, check for at least 30 VDC between plug J44 - pin 5 and pin 4 on the power board. This is the voltage source for the 40 mA current for the serial loop. If the voltage is low or not present, the power board may be faulty. Replace the power board.
12.After the test is completed and the prob- lem successfully repaired, replace the PC board cover with two sheet metal screws.
13.Install the machine case sides and top.
14.Install the handle and the lift bail rubber gasket.
POWER WAVE 450
1/96
