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TROUBLESHOOTING & REPAIR
F-27 F-27
V350-PRO
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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
POWER PC
BOARD
CONNECTOR
PLUG J41
POWER PC
BOARD
CONNECTOR
PLUG J42
POWER PC
BOARD
CONNECTOR
PLUG J42
POWER PC
BOARD
CONNECTOR
PLUG J42
POWER PC
BOARD
CONNECTOR
PLUG J43
POWER PC
BOARD
CONNECTOR
PLUG J43
POWER PC
BOARD
CONNECTOR
PLUG J43
CHECK +5VDC
SUPPLY FROM
POWER PC
BOARD
CHECK -15VDC
SUPPLY FROM
POWER PC
BOARD
CHECK +5VDC
“SPI” SUPPLY
FROM POWER
PC BOARD
CHECK +5VDC
“RS232”
SUPPLY FROM
POWER PC
BOARD
CHECK +15VDC
“SPI” SUPPLY
FROM POWER
PC BOARD
408 (+)
410 (-)
411 (+)
410 (-)
403 (+)
401 (-)
406 (+)
405 (-)
402 (+)
401 (-)
5 VDC
-15 VDC
5 VDC
5 VDC
15 VDC
CHECK +15VDC
SUPPLY FROM
POWER PC
BOARD
412 (+)
410 (-)
15 VDC
CHECK 40VDC
SUPPLY FROM
RECT. BRIDGE
TO POWER BD.
65 (+)
66 (-)
38-42 VDC
65
66
2(+)
1(-)
410
412
1(+)
5(-)
410
408
3(+)
5(-)
410
411
2(+)
5(-)
403
401
3(+)
12(-)
406
405
4(+)
9(-)
402
401
6(+)
12(-)