Magnetic Head Assembly PU1 cont'd

11-5835-243-34/EE641-AA-MMl-010/E154

MTT/TO

31S3-4-110-1

means of jackscrews.

Shim Part Number

Thickness

493-9110-1

0.001 in.

(3) Insert head alignment fixture into tape

493-9110-3

0.003 in.

transport. Ensure that the fixture is inserted

493-9110-5

0.005 in.

correctly (fig. 3-10) and that the cartridge locking

(1) Position head assembly (16) on the tape deck

lever is in locked position.

and secure with two socket head screws (15) and flat

(4) Use head stack gage to measure clearance

washers. Do not install shims at this time.

between top of head assembly guide posts and head

CAUTION

alignment fixture at both guide posts (fig. 3-10).

Alternately tighten connector jackscrews

Clearance at each guide post must be between 0.003

one to two turns until connector is

inch and 0.004 inch. If there is more than 0.001 inch

securely seated.

difference between the guide post measurements,

install new head assembly.

(2) Secure connector PU1P1 to A10A1J and

connector PU1P2 to A10A1J2 on interface board by

3-22