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POWER BOARD
CONNECTOR
PLUG J41
POWER BOARD
CONNECTOR
PLUG J42
POWER BOARD
CONNECTOR
PLUG J42
POWER BOARD
CONNECTOR
PLUG J42
POWER BOARD
CONNECTOR
PLUG J43
POWER BOARD
CONNECTOR
PLUG J43
POWER BOARD
CONNECTOR
PLUG J43
CHECK 40 VDC
INPUT FROM
DC BUS BOARD
CHECK +15
VDC SUPPLY FROM
POWER BOARD
CHECK +5 VDC
SUPPLY FROM
POWER BOARD
CHECK -15 VDC
SUPPLY FROM
POWER BOARD
CHECK +5 VDC
ARCLINK SUPPLY
FROM POWER BOARD
CHECK +5 VDC
“RS-232” SUPPLY
FROM POWER BOARD
CHECK +5 VDC
SPI SUPPLY FROM
POWER BOARD
2 (+)
1 (-)
1 (+)
5 (-)
3 (+)
5 (-)
2 (+)
5 (-)
5 (+)
10 (-)
4 (+)
9 (-)
3 (+)
12 (-)
477 (+)
475 (-)
412 (+)
410 (-)
408 (+)
410 (-)
411 (+)
410 (-)
1104 (+)
1103 (-)
406 (+)
405 (-)
403 (+)
401 (-)
38 – 42 VDC
+15 VDC
+5 VDC
-15 VDC
+5 VDC
+5 VDC
+5 VDC
TROUBLESHOOTING & REPAIR
F-25 F-25
POWER WAVE 355/405
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POWER BOARD TEST (CONTINUED)
TABLE F.3 – POWER BOARD VOLTAGE CHECKS
CHECK POINT
LOCATION
TEST
DESCRIPTION
CONNECTOR
PLUG PIN NO.
LEAD NO. OR
IDENTITY
NORMAL
ACCEPTABLE
VOLTAGE
READING
475 477
412
410
408
410
411
410
1103
1104
405
406
401
403