Sony TAV-L1 Service Manual page 13

GREASE FOR LEAD SCREW
HOW TO IDENTIFY OPTICAL PICK-UP BLOCK
Note: There are two kinds of OPTICAL PICK-UP BLOCK in this set.
When replacing the OPTICAL PICK-UP BLOCK, make sure which
OPTICAL PICK-UP BLOCK it is following the "How to Identify"
in the figure shown below.
Printed of KHM-310CAB or KHM-313CAB.
Note: When replacing and checking the lead screw,
apply the part No.7-640-014-48 GREASE (SNG-511) 1KG
to the entire lead screw.
lead screw
DVD mechanism deck
(CDM86-DVBU101)
TAV-L1
13