PWRSPLY
For use by authorized service providers.
A power supply may be the failing item.
Follow the instructions for the model you are working on:
v Models 270 or 820 (See page 431)
v Models 800, 810, 825, 870/890 (FC 9094) (See page 435)
v Models 830, 840, SB2, or SB3 (See page 438)
Instructions for Model 270 or 820
Attention: Before installation, you must remove the protective cover on connector J4 on the power supply
(see Type, model, and part number list for part number).
1. Is the SRC 1xxx-15xx?
v No: Continue with the next step.
v Yes: Perform the following:
a. Find the unit reference code in the following tables to determine the failing power supply.
b. On a system with the dual line cord feature, and an SRC 1xxx-1510, 1520, or 1530, perform
“Power PIP11” on page 175 before replacing parts.
c. Refer to Locations and addresses to determine the location and part number of the failing
item.
d. Replace the failing power supply.
e. Perform the following if the new power supply does not fix the problem:
1) Reinstall the original power supply.
2) Try the new power supply in each of the other positions listed in the table.
3) If the problem still is not fixed, reinstall the original power supply and go to the next FRU
in the list.
4) On a Model 820 with SRCs 1xxx-1510, 1520, and 1530, exchange the power distribution
backplane if a problem prevails after replacing the power supply.
Table 1. Model 270 system unit
Unit reference code Power supply
1510, 1511, 1512, 1513, 1514, 1516 P01
Table 2. Model 270 FC 7104 Internal Expansion Unit
Unit reference code Power supply
1520, 1521, 1522, 1523, 1524, 1526 P02
Table 3. Model 820 system unit frame
Unit reference code Power supply
1510, 1511, 1512, 1513, 1514, 1516 P01
1520, 1521, 1522, 1523, 1524, 1526 P02
1530, 1531, 1532, 1533, 1534, 1536 P03
Analyze hardware problems 431
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