Cnr Adjustment (For Ag-7350); Cnr Adjustment (For Ag-7150); Playback Chroma Level Adjustment 2 (For Ag-7350); Playback Chroma Level Adjustment 2 (For Ag-7150) - Panasonic AG-7350 Series Service Manual

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5-3-38. CNR ADJUSTMENT (FOR AG-7350)
TP ADJ.
MODE INPUT
TP8002
VR8005 PAL
COLOUR BAR
VR8006
PLAY
TAPE M. EQ.
SPEC.
SELF
OSCILLO-
RECORDED
SCOPE
LESS THAN 500 mVp-p
TAPE
Note: This adjustment should be always completed
after the YNR balance adjustment.
1. Supply a colour bar to the video input and
record it for a few minute.
2. Connect the oscilloscope to TP8002.
3. Play back the just recorded portion.
4. Adjust VR8005 and VR8006 mutually so that the
chroma signal is minimized as possible (less
than 500mVp-p at least) as shown in Figure
E38.
TP8002
(V. RATE)
LESS THAN
-------~~ 500rp-~~
Figure E38
5-3-39. CNR ADJUSTMENT (FOR AG-7150)
TP ADJ. MODE INPUT
TP8002
VR8005 PAL
X
VR8006 PLAY
TAPE M. EQ. SPEC.
COLOUR BAR
OSCILLO-
RECORDED
SCOPE
LESS THAN 500mVp-p
S-VHSTAPE
Note: This adjustment should be always completed
after the YNR balance adjustment.
1. Prepare the prerecorded tape which recorded a
colour bar signal on another recorder
(AG-7350).
2. Play back the just recorded portion.
3. Connect the oscilloscope to T P8002.
4. Adjust VR8005 and VR8006 mutually so that the
chroma signal is minimized as possible (less
than 500mVp-p at least) as shown in Ftgure
E39.
TP8002
(V. RATE) LESS THAN
-------~~
500rp
~f-..-____F=l-
Figure E39
5-16
3-5-40. PLAYBACK CHROMA LEVEL
ADJUSTMENT 2 (FOR AG-7350)
TP ADJ. MODE INPUT
VIDEO OUT 1 VR8009
PAL
COLOUR BAR
PLAY
TAPE M. EQ. SPEC.
SELF
OSCILLO-
RECORDED
SCOPE
0.6 Vp-p ± 0.03 V
TAPE
1. Supply a colour bar signal to the video input
and record it for a few minute.
2. Connect the oscilloscope to the video output
connector with 75 ohm termination.
3. Adjust VR8009 for 0.6 +/- 0.03Vp-p as shown in
Figure E40.
VIDEO OUT
1 (H. RATE)
CYAN LEVEL= 0.6Vp-p±0.03V
with 750 Termination
Figure E40
5-3-41. PLAYBACK CHROMA LEVEL
ADJUSTMENT 2 (FOR AG-7150)
TP ADJ. MODE INPUT
VIDEO OUT 1 VR8009
PAL
X
PLAY
TAPE M. EQ. SPEC.
BLANK TAPE
OSCILLO-
0.6Vp-p ±0.03V
SCOPE
1. Prepare the prerecorded tape which recorded a
colour bar
signa I
on another recorderv
(AG-7350)
2. Play back the colour bar recorded tape.
3. Connect the oscilloscope to the video output
connector with 75 ohm termination.
4. Adjust VR8009 for 0.6 +/-0.03Vp-p as shown in
Figure E41.
VIDEO OUT
1 (H. RATE)
CYAN LEVEL= 0.6Vp-p±0.03V
with 750 Termination
Figure E41