IBM 6151 Maintenance And Service Manual page 104

70x
Fixed-Disk Drive Type R70
Additional Tests: None
Removal Procedure: See Fixed-Disk Drive Removal in
Section 4.
Repair Checkout: Run the Fixed-Disk Drive and Media
Checkout.
71x
Fixed-Disk Drive Type H310
Additional Tests: None
Removal Procedure: If the drive is in the system unit, see
Fixed-Disk Drive Removal in Section 4,
otherwise see the service information for
the unit containing the drive.
Repair Checkout: Run the Fixed-Disk Drive and Media
Checkout.
74x
Fixed-Disk Drive Type R40
Additional Tests: None
Removal Procedure: See Fixed-Disk Drive Removal in
Section 4.
Repair Checkout: Run the Fixed-Disk Drive and Media
Checkout.
3-0020-26 Service Manual