Input Board Test Point Location; Input Board Voltage Test Points And Expected Readings (Nominal 460Vac Applied) - Lincoln Electric POWER WAVE S500 Service Manual

F-56
B4
TABLE F.18 – INPUT BOARD VOLTAGE TEST POINTS AND EXPECTED READINGS
DESCRIPTION
THREE-PHASE INPUT
THREE-PHASE INPUT
THREE-PHASE INPUT
DC TO POWER
CONVERSION BOARD
FILTERED DC TO
PFC BOARD
RECTIFIED AC TO
PFC BOARD
DC POWER TO RELAYS
CR1 AND CR2 FROM
PFC BOARD
TROUBLESHOOTING AND REPAIR
INPUT BOARD TEST (continued)
FIGURE F.21 – INPUT BOARD TEST POINT LOCATION
J1
J1
CR1
CR2
(NOMINAL 460VAC APPLIED)
TEST POINT
B1
B2
B3
B4(+)
PLUG J1 PIN 6
(LEAD 366) (+)
PLUG J1 PIN 3
(LEAD 369) (+)
PLUG J1 PIN 10
(LEAD 362) (+)
POWER WAVE
10 6
J1
5 1
R6 R3 R7
D6
B5
TEST POINT
B2
B3
B1
B5(–)
B5(–)
B5(–)
PLUG J1 PIN 5
(LEAD 367) (–)
® S500
F-56
GREEN
LED
B3
B2
B1
EXPECTED
READING
AC LINE VOLTAGE
(Ex. 470VAC)
AC LINE VOLTAGE
(Ex. 470VAC)
AC LINE VOLTAGE
(Ex. 470VAC)
AC LINE VOLTAGE X
1.414 +/–10%
(Ex. 629VDC)
AC LINE VOLTAGE X
1.414 +/–10%
(Ex. 648VDC)
AC LINE VOLTAGE X
1.414 +/–10%
(Ex. 629VDC)
15VDC