IBM 270, Service Manual

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Models 270 and 810 - Cards (concurrent)
Models 270, 800, and 810 - Cards (dedicated)
Models 270, 800, and 810 - Control panel - NB1
Models 270, 800, and 810 - Covers
Models 270, 800, and 810 - Device board - DB1, DB2, and DB3
Models 270, 800, and 810 - Disk unit (concurrent)
Models 270, 800, and 810 - Disk unit (dedicated)
Models 270, 800, and 810 - Memory
Models 270, 800, and 810 - Power supply - P01
Models 270, 800, and 810 - Power supply - P02
Models 270 and 810 - Processor - M02
Models 270, 800, and 810 - Processor regulator - R01
Models 270, 800, and 810 - Removable media - D07 and D08
Models 270, 800, and 810 - System unit backplane - MB1
Models 270, 800, and 810 - Time of day battery (TOD)
Models 270, 800, and 810 - Air moving device - B01 and B02
For use by authorized service providers.
Use this procedure to remove or replace the air moving device (AMD) - B01 and B02 in Models 270, 800,
and 810.
The Models 270, 800, and 810 may be housed in a FC 0551 frame. The upper and lower system units are
placed on rails in the frame. If you are working on the upper or lower unit, follow these instructions and
access the internal parts by opening the front cover and sliding the system unit out on its rails.
To remove or replace the air moving device - B01 and B02:
1. Power off the system. See Power on/off the system and logical partitions.
2. Disconnect the power cord. On Models 270, 800, and 810 with a system unit expansion attached,
disconnect both the system line cord and the expansion unit line cord.
3. Remove the front cover. See Models 270, 800, and 810 - Covers.
4. Remove the AMDs by pulling out on the two top side fasteners and pivoting them toward you.
5. Unplug the cable.
6. Reverse this procedure to install the AMDs. When installing the AMDs, be sure the cardboard is placed
between the two fans.
This ends the procedure.
Models 270, 800, and 810 - Air moving device - B03
For use by authorized service providers.
Analyze hardware problems
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