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POWER BOARD TEST (continued)
TROUBLESHOOTING AND REPAIR
F-41 F-41
INVERTEC® V450-PRO
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
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
“RS-232” SUPPLY
FROM POWER BOARD
CHECK +15 VDC
SPI SUPPLY FROM
POWER BOARD
CHECK +5 VDC
SPI SUPPLY FROM
POWER BOARD
CHECK +20 VDC STT
SUPPLY FROM
POWER BOARD
2 (+)
1 (-)
1 (+)
5 (-)
3 (+)
5 (-)
2 (+)
5 (-)
4 (+)
9 (-)
6 (+)
11 (-)
3 (+)
12 (-)
7 (+)
1 (-)
477 (+)
475 (-)
225 (+)
222 (-)
221 (+)
222 (-)
222 (+)
223 (-)
226 (+)
228 (-)
266 (+)
267 (-)
268A (+)
262 (-)
345 (+)
346 (-)
38 – 42 VDC
+15 VDC
+5 VDC
-15 VDC
+5 VDC
+15 VDC
+5 VDC
+20 VDC
TABLE F.4 – POWER BOARD VOLTAGE CHECKS
CHECK POINT
LOCATION
TEST
DESCRIPTION
CONNECTOR
PLUG PIN NO.
LEAD NO. OR
IDENTITY
NORMAL
ACCEPTABLE
VOLTAGE
READING
NEG. POS.
225
222
221
222
223
222
228
226
267
266
262
268A
345
346
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