Lincoln Electric 11141 Service Manual page 69

F-23
TEST POINT TERMINALS
+ PROBE
A
B
C
A
B
C
A
B
C
207
207
207
207A
207A
207A
209
209
209
9. If the input rectifier does not meet the
acceptable readings outlined in Table F.2
the component may be faulty. Replace
Note: Before replacing the input rectifier,
check the input power switch and recon-
nect switches. Perform the Main Switch
Board Test.
faulty filter capacitors.
10. If the input rectifier is good, be sure to
reconnect leads 207, 207A, and 209 to
the correct terminals and torque to 31
inch lbs. Apply silicone sealant.
TROUBLESHOOTING AND REPAIR
INPUT RECTIFIER TEST (CONTINUED)
Table F.2 Input Rectifier Test Points
- PROBE
207A
207A
207A
Also check for leaky or
POWER WAVE
Acceptable Meter Readings
207 Greater than 1000 ohms
207 Greater than 1000 ohms
207 Greater than 1000 ohms
Greater than 1000 ohms
Greater than 1000 ohms
Greater than 1000 ohms
209
209
209
A
B
C
A
B
C
A Greater than 1000 ohms
B Greater than 1000 ohms
C Greater than 1000 ohms
11. If the input rectifier is faulty, see the Input
Rectifier Bridge
Replacement procedure.
12. Replace the case wraparound cover.
® 355M/405M
ANALOG METER
X10 RANGE
Less than 100 ohms
Less than 100 ohms
Less than 100 ohms
Less than 100 ohms
Less than 100 ohms
Less than 100 ohms
Less than 100 ohms
Less than 100 ohms
Less than 100 ohms
Removal &
F-23