HP 7925D Service Manual page 136

Removal and Replacement
1. Position the head installation tool with the marking:
• UP for heads 1, 3, 4, 6, and 8
• DN for heads 0, 2, 5, 7, and servo
2. Firmly hold thumb at spring joint.
3. Lift head arm up until assembly is straight.
4. Post inserts into hole on head assembly.
5. Center pin slides over back of head assembly.
6. Front pin slides under head assembly.
UP HEAD
7925
HEAD
UP
DOWN
1
-
Rotate head into installation position.
2,3
1,2
Ensure that mounting hole (2) and
cable (3) are facing head preampli-
fier side of drive.
4 3 Install head and secure.
5
4
Remove head installation tool before
tightening head securing screw.
REF 7301
5-8
DOWN HEAD
Figure 5-2. Using the Head Installation Tool