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F-10

TROUBLESHOOTING AND REPAIR

F-10

Observe Safety Guidelines detailed in the beginning of this manual.

 

 

 

 

 

 

 

 

PROBLEMS

POSSIBLE AREAS OF

RECOMMENDED

 

(SYMPTOMS)

MISADJUSTMENT(S)

COURSE OF ACTION

 

 

 

 

 

 

 

 

FUNCTION PROBLEMS

 

 

The displays are blank (not lit). The

1. Check for loose or faulty connec-

1. Check for 5VDC at J37 pins 2

wire feeds when the gun trigger is

tions at plug on the display board,

and 10 on the display board. If 5

activated.

 

to plug on the memory board to

VDC is present, then the display

 

 

the plug on the msp-4 board to

board may be faulty.

 

 

 

the plug on the push-pull daugh-

 

 

 

 

ter board to the feed head board.

2. If the 5VDC is low or not present,

 

 

 

check for loose or faulty connec-

 

 

 

tions in SPI circuit. See machine

 

 

 

schematic.

 

 

 

 

3. The feedhead control board may

 

 

 

be faulty.

 

 

 

 

The dual procedure is not function-

1. Make certain the LED indicator on

1. Check shielded cable lead and

al when using the remote Dual

the Dual Procedure Panel is in the

connections from J86 on PC BD

Procedure

switch. The STATUS

middle position. This enables the

to MSP panel. Check SPI cable

LEDs are steady green on the

gun remote dual procedure

from MSP panel to Dual/memory

power source, and wire drive units.

switch.

panel. Per machine schematic.

 

 

 

2. Check for 5VDC at J86 pins 2

 

 

 

and 10. Check for 15VDC at J86

 

 

 

pins 1 and 10. If voltage is not

 

 

 

present replace feed head. If

 

 

 

leads and voltages are good

 

 

 

replace dual/memory panel.

 

 

 

 

 

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-888-935-3877.

POWER FEED® 25M

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Lincoln Electric SVM185-A service manual Troubleshooting and Repair