Panasonic DVD-RV60 98RV1 - Manual (Page 6)

3.2 - Installing the KeyMaster.
When the mechanism is removed it is possible to install the Key-
Master. fig. 4.
Fig. 4
Seven wires have to be soldered onto the MPEG board (which are
attached to the mechanism). All seven wires have to be soldered
onto the bottomside of the MPEG board. Remember to adjust the
ends of the wires so they will fit onto the soldering pads.
Solder the seven wires onto the board as shown on fig. 4-5-6
.
Do not change or remove any components.