Focus Adjustment; Focus Adjustment; Raster Size Adjustment; Raster Size Adjustment - Panasonic AJ-HVF20P Service Manual

2-6. Focus Adjustment

Board SUB1 BOARD
Spec 6.0kV+/-0.1kV
Chart Resolution chart
TP HV Connector (FBT side)
Adjust RV109 (FOCUS) [SUB1 BOARD]
M.EQ D.V.M (Use EHV probe)
1. Shoot "Resolution chart" then adjust zoom and focus
so that the full-size picture is displayed on screen of
EVF.
2. Adjust RV109 so that the voltage is within the
specification.
NOTE:
If "2-7 Raster size adjustment" is out of specification,
focus adjustment may not be in specification. In this
case turn RV110 (H-SIZE) fully counter clockwise then
excute this adjustment again.
If focus voltage is too nigh, High voltage protection
circuits may work. In this case turn power off and turn
RV109 fully counter clockwise then turn power on again.

2-7. Raster Size Adjustment

Board SUB1 BOARD
Spec A= approx. 3mm, B= approx. 1mm
Chart Resolution chart
TP EVF screen
RV110 (H-SIZE), RV106 (V-SIZE)
Adjust
1. Shoot "Resolution chart" then adjust zoom and focus
so that the full-size picture is displayed on screen of
EVF.
2. Adjust RV106 so that the no picture portion "A" is
within the specification.
3. Adjust RV110 so that the no picture portion "B" is
within the specification.
.
A
Raster edge
CRT frame
B

2-8. Heater Voltage Adjustment

Board MAIN BOARD
Spec 630mV+/-10mV (DC)
TP22-TP23
TP
(CN502 3pin-4pin)
Adjust RV501 (HEATER V ADJ.)
M.EQ D.V.M
1. Adjust RV501 so that the Heater voltage between
TP22 and TP23 is within the specification.
NOTE:
Do not set Heater voltage more than "700mV" during
adjustment.
2-9. V Center Adjustment
Board SUB1 BOARD
Spec Vertical position is Center
Chart Resolution chart
TP EVF screen
Adjust RV112 (V-CENTER)
1. Shoot "Resolution chart" then adjust zoom and focus
so that the full-size picture is displayed on screen of
EVF.
2. Adjust RV112 so that the vertical picture position to
center.
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)
Shoot "Resolution chart" then adjust zoom and
1.
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, excute "2-7

Raster size adjustment".