ISSUE 11, 1985 : DISK DRIVE 3
 MODEL : 1541 "B"
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             A NEW VERSION OF 1541 DISK DRIVE HAS BEEN RELEASED AND
             TERMED THE 1541 B. THE 1541 B USES A NEW PCB AND DRIVE
             ASSEMBLY. A SUPPLEMENT TO THE 1540/1541 SERVICE MANUAL
             IS ATTACHED. PLEASE INSTALL THESE PAGES IN YOUR MANUAL.
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                  The 1541 B remains operationally the same as
                  the 1541. However, structurally the assemblies
                  used to build the unit are different from the
                  previous models. The assembly parts are NOT
                  INTERCHANGEABLE.
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                             1541 B ASSEMBLY PARTS
| PCB ASSY | 250448-01 | 
| NEWTRONICS DRIVE ASSY | 251643-03 | 
| POWER SUPPLY ASSY | 251868-01 | 
             The casework and accessory parts remain the same as the
             1541.