Sample Pulse Adjustment; Reset Dc Adjustment - Panasonic AJ-D400P Service Manual

1-3. Sample Pulse Adjustment

BOARD Pulse
SPEC. NTSC : A = 25.0 ± 1ns, B = 16.0 ± 1ns
PAL : A = 27.5 ± 1ns, B = 16.0 ± 1ns
TEST TP3001 (SMPL) (CDS Board), TP3 (H2)
ADJUST VR3 (S PH), VR6 (S W)
M.EQ Oscilloscope
1. Adjust the VR6 so that the pulse width B (TP3001)
is within specification.
2. Adjust the VR3 so that the phase difference A is
within specification. (Trigger : TP3)
<Note>
1. If the adjustment is not completed even after the
VR is fully turned, keep the VR where it is.
(left end or right end)
50%
TP3 (H2)
TP3001 (SMPL)
50%
A
B

1-4. Reset DC Adjustment

BOARD Pulse
SPEC. A = Maximum
TEST TP3203 (G S/H) (CDS Board)
ADJUST VR13 (R DC), VR8 (SUB G)
F.NBR. Open (2000LUX)
CHART Grayscale Chart
M.EQ Oscilloscope
1. Set the VR13 to the centre position.
2. Turn the VR8 counterclockwise fully so that the
saturation level depends on R DC.
3. Turn the VR8 clockwise until the saturation level
depends on SUB G.
4. Adjust the VR13 so that the waveform level is
maximized.
5. Install the Head Optical Ass'y (camera unit) again.
A