Aiwa NSX-AJ305 U Service Manual page 42

Precaution to replace Optical block
(KSS-213F, 5ZL-3)
Body or clothes electrostatic potential could ruin
laser diode in the optical block. Be sure ground
body and workbench, and use care the clothes
do not touch the diode.
1) After the connection, remove solder shown in
the right figure.
PICK-UP ASSY PWB
(KSS-213F: 87-A90-836-010) MODEL
PICK-UP ASSY PWB
(5ZL-3: M8-5ZL-395-000) MODEL
-3-
Solder