Panasonic PT-50DL54 Technical Manual page 60

If the cross hatch lines are not at the notches, the top & bottom lines must be at equal
distances from the notches, as long as the lines are vertical and horizontal. Retight
the four lens-mounting screws.
Mechanical focus adjustment:
6. Refer to figure 54. Loosen the focus knob (right of the lens assembly).
7. While observing the focus at the center of the screen, adjust the loosened focus
knob up or down to obtain the sharpest video. Tighten the focus knob.
8. Replace the access port (2 screws) and the decorative front panel (push on).
Both of these are not shown.
Electrical H & V Position adjustment:
Electrical positioning is performed using the remote in the exte
the cross hair signal is still on the screen.
Entry to Service Mo
9. With the TV turned on, hold
simultaneously hold down the RECALL button on the remote control. A red
"CHK" appears on the screen's left corner (se
a color screen incorrectly appears, press RECALL repeatedly until "CHK"
reappears .
Loosen 4 screws for lens positioning
Lens
Figure 54 - Access port
de:
in the VOLUME-DOWN button on the front panel and
Focus knob
nded service mode while
e figure 44) in this service mode. If
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en