Panasonic PT-50LCZ70 Service Manual page 61

a. Focus Adjustment
1) Confirm that the black line (C, D) in the nine portions are
visible.
OPT HPOS 0024
<MMD-CHK 2/8>
C
2) If not, loosen the Knob on the Projection Lens until the
Knob can be moved. Then, adjust the focus by moving
up or down the Knob.
<Front View>
Fig. M1-6
3) Tighten the Knob.
D
Tighten
Knob
Loosen
Up
Down
PT-50LCZ70 / PT-56LCZ70 / PT-61LCZ70 / PT-50LCZ7 / PT-56LCZ7 / PT-61LCZ7
b. Mechanical Picture Position Adjustment (Tilt)
1) Loosen the 4 Screws on the Projection Unit.
Screw
Screw
Twist
<Front View>
2) Adjust the Projection Lens by twisting so that the long
line "g" and the long line "h" are within 4 dots. (The long
line "g" and the long line "h" will be almost aligned
horizontally.)
OPT HPOS 0024
"G"
<MMD-CHK 2/8>
long line "g"
within 4 dots
"G"
Note:
If the Projection Lens is twisted left, the Focus Screen twists
left.
If the Projection Lens is twisted right, the Focus Screen
twists right.
3) Tighten the 4 Screws while fixing the Projection Lens.
61
Screw
Screw
Twist
Fig. M1-5
"H"
long line "h"
"H"