Linearity Adjustment; Linearity Adjustment; Clamp Level Adjustment; Clamp Level Adjustment - Panasonic AJ-HVF27P Service Manual

2-10. V Linearity Adjustment
Board SUB1 BOARD
All circles at four corners of resolution
Spec
chart are most round.
Chart Resolution chart
TP EVF screen
Adjust RV108 (V-LIN)
Aim Camera (-recorder) at "Resolution chart" then
1.
adjust zoom and focus so that the full-size picture
is displayed on screen of EVF.
2. Adjust RV108 so that the "Circle" is most round on
each corner of resolution chart.
NOTE:
If V and H size need to be adjusted, execute "2-7
Raster size adjustment".

2-11. Clamp Level Adjustment

Board SUB2 BOARD
Spec A = 10V+/-1V
TP CN263 1pin (CRT G1 connector)
RV202 (CLAMP LEVEL)
Adjust
input Camera Color bar
M.EQ Oscilloscope
1. Set the Camera internal color bar to ON.
2. Set the knobs as shown below.
BRIGHT knob
CONTRAST, PEAKING knob :
3. Adjust RV202 so that the peaking level "A" at CN263
1pin is within the specification.
A

2-12. Sub Brightness Adjustment

Board SUB2 BOARD
Spec Pedestal portion = Just black out
TP EVF screen
RV205 (SUB BRIGHTNESS)
Adjust
input Camera Color bar
: Center
Max
ELE-4
1. Set the Camera internal color bar to ON.
2. Set the BRIGHT, CONTRAST and PEAKING knobs
to Minimum level.
3. Adjust RV205 so that the pedestal portion is
changed from slightly light to dark (just black out).
Pedestal portion = Black Out

2-13. Peaking Balance Adjustment

Board SUB2 BOARD
Peaking level = left and right equal
Spec
(Both sides on Resolution chart)
Chart Resolution chart
TP EVF screen
Adjust RV203 (PEAKING BALANCE)
1. Set the Knobs as shown below.
BRIGHT knob :
CONTRAST knob :
PEAKING knob :
2. Aim Camera (-recorder) at "Resolution chart" then
adjust zoom and focus so that the full-size picture is
displayed on screen of EVF.
3. Adjust RV203 so that the Peaking width is equal.
Peaking width is equal
Min
Center
Max