Apple PowerBook 165 - Manual (Page 94)

Take Apart Daughterboard - 34
Replacement Note:
If you
are replacing a defective
daughterboard in a
PowerBook 160/180
within the serial number
range FC233xxxxxx
through FC241xxxxxx, you
must also replace the sound
jack insulator on the
motherboard.
Sound Jack Insulator
Sound Jack
Assembly
Motherboard