Play Tape Path Limit Confirmation; Confirmation Of Envelope On Rev, Rew And Ff Mode - Panasonic AJ-SDX900P Service Manual

1-22. Play Tape Path Limit Confirmation

SPEC
Each post limit shown in figure below (refer to Table 1-22).
VTR MODE
PLAY
TAPE
SD VTR & CAM
HD CAM
Post Name
S5 post
S4 (Tension) post
S1 post
T1 post
T3 post
T4 post
1. Place unit into PLAY mode and confirm the each post limits is within the specification.
2. If out of specification, adjust the post height by following the each adjustment procedure (Refer to above table).
A : UPPER

1-23. Confirmation of Envelope on REV, REW and FF mode

SPEC Waveform must be Diamond Style.
All the peak level must be more
than 90% of maximum level.
V/Vmax ≥ 0.9
TEST POINT
Refer to item "6. Table of Test Point for
each adjustment item."
VTR MODE
REV, REW, FF
TAPE
SD VTR & CAM
HD CAM
M.EQ
Oscilloscope
Click this button , then go to item "6. Table of
Test Point for each adjustment item.".
1. Confirm that the Envelope waveform becomes in
the specification at REV, REW and FF mode as
following.
⋅
Waveform must be Diamond Style.
(Figure 1-23)
⋅
All the peak level must be more than 90% of
maximum level.
V/Vmax ≥ 0.9
2. If out of spec, adjust S4 post height. (refer to item
"1-1.Post Height Pre-Adjustment")
NTSC: VFM3582KM or Blank Tape
PAL: VFM3682KM or Blank Tape
VFM3782KML or Blank Tape
Tape limit (refer to figure)
A B C D
OK OK NG NG
NG NG OK NG
OK NG NG NG
OK NG NG NG
NG NG OK NG
OK OK OK NG
B : FREE C : LOWER
NTSC: VFM3582KM
PAL: VFM3682KM
VFM3782KML
Adjustment
Point
E F
NG NG S4, S5 post
NG NG
NG NG S1, T1 post
NG NG
NG NG A/C Head tilt screw
NG NG T4 post
Table 1-22
D : CURL
Figure 1-22
MECH-17
Adjustment
Item
Post Height Pre-Adjustment
ENV Waveform Adjustment
A/C Head Tilt Adjustment
Post Height Pre-Adjustment
E : BEND F : DROP
Figure 1-23