3. Check for 1.0 ohm or less of resistance between the power cord ground and the
power supply frame.
4. Ensure that the power cord is fully inserted and secured into position on the
machine end.
5. Ensure that the power cord required for your country and system is installed.
AC Safety Grounds
1. Ensure that all power supply mounting screws are tight.
2. Ensure that the mounting screws of the AC module or internal UPS are tight.
Safety Labels
Ensure that all the safety labels are visible and readable:
1. Main power rating attached to the right side frame at the back of the machine.
2. 240 V AC attached to each 23 pin connector (J2 and J3) on AC modules that
have SPCN connectors (J15 and J16) (46G3576).
3. Danger up to 240 V AC attached to the bottom frame under the power supplies
(46G3575).
4. Weight restriction label attached under the handle on the cover of the External
Battery Backup Unit (74F9976).
1. Main power rating attached to the left side frame at the back of the machine.
2. Danger up to 240 V AC attached to the bottom frame under each power
supply (90H6275).
3. Caution Lead Acid battery attached to side of internal battery unit (21H7089).
4. Weight restriction label attached to top of internal battery (74F9976).
5. Weight restriction label attached to top of power sub-frame assembly
(74F9976).
6. Models 640, 730 and S30 only: Two weight restriction labels attached to
SPD/DASD cage sub-frame assembly (74F9976).
7. Two weight restriction labels attached to active back plane assembly (74F9976).
8. Main power rating attached to back plate on external battery unit.
9. Caution lead Acid battery label attached to back plate on external battery unit
(21H7089).
10. Weight restriction label attached to base at rear of external battery unit
(74F9978).
Power Off and On (System Unit) – All Models
1. Ensure that the system powers off correctly.
2. Ensure that the system powers on correctly.
Internal Mechanical Inspection
1. Ensure that AMD shields are installed on the AC module AMD assembly.
2. Ensure that the EMC access plate is installed over the power supplies.
3. Ensure that the card retainers are installed on the front and back of the card
enclosure.
4. Ensure that the latch to lock the bottom adapter card is installed on all
Magnetic Storage IOP (2624) cards with part number 86G8317.
958 iSeries Model 830, 840, SB2, and SB3 Problem Analysis, Repair and Parts V5R1
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