Camera Section> 1. Head Optical Ass'y 1; Reset Pulse Adjustment; Clamp Pulse Adjustment - Panasonic AJ-D400P Service Manual

<Camera Section>
1. Head Optical Ass'y 1

1-1. Reset Pulse Adjustment

BOARD Pulse
SPEC. A = 5.0 ± 1ns, B = 10.0 ± 1ns
TEST TP1 (R), TP3 (H2)
ADJUST VR1 (R PH), VR4 (R W)
M.EQ Oscilloscope
1. Remove the Head Optical Ass'y (camera unit).
2. Adjust the VR4 so that the pulse width B at the
TP1 is within specification.
3. Adjust the VR1 so that the phase difference A is
within specification. (Trigger : TP3)
50%
TP3 (H2)
TP1 (RESET)
50%
A
B

1-2. Clamp Pulse Adjustment

BOARD Pulse
NTSC : A = 37.5 ± 1ns, B = 19.0 ± 1ns
SPEC.
PAL : A = 39.0 ± 1ns, B = 17.0 ± 1ns
TEST TP3002 (CLMP) (CDS Board), TP3 (H2)
ADJUST VR2 (C PH), VR5 (C W)
M.EQ Oscilloscope
1. Adjust the VR5 so that the pulse width B (TP3002)
is within specification.
2. Adjust the VR2 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)
TP3 (H2)
TP3002
(CLAMP)
50%
50%
A B