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5-48
3-6.
STEREO AUDIO SYSTEM ADJUSTMENT
(CCD-TR917/ TR940/ TR940PK)
(CCD-TR917/ TR940/ TR940PK)
•
Perform the adjustment using the color bar signal as a video
signal input for VIDEO terminal.
signal input for VIDEO terminal.
•
The items to be adjusted for the R channel will be indicated
within the [ ], in regard to the adjusting items to be adjusted for
both L and R channels.
within the [ ], in regard to the adjusting items to be adjusted for
both L and R channels.
•
Set the Hi-Fi sound switch in the menu display to “STEREO”
position unless specified otherwise.
position unless specified otherwise.
Note:
1) When inputting the audio signal, input the same signal to both
the L and R channels, unless specified otherwise.
2) Be sure to insert the plug (Shorting plug or dummy plug, etc)
into the AUDIO terminal (Right). If the plug is not inserted, the
monaural mode well be set, and correct adjustments can not be
carried out.
[Monaural mode]
During recording ............... REC AFM RF 1.7MHz carriear will
monaural mode well be set, and correct adjustments can not be
carried out.
[Monaural mode]
During recording ............... REC AFM RF 1.7MHz carriear will
not be output.
During playback ................ The L+R signal will be output from
the AUDIO terminal (Left).
[Connecting the measuring instruments for the audio]
Connect the audio system measuring instruments in addition to the
video system measuring instruments as shown in Fig. 5-3-22, and
perform adjustments at the power switch [VTR] or [PLAYER]
position.
video system measuring instruments as shown in Fig. 5-3-22, and
perform adjustments at the power switch [VTR] or [PLAYER]
position.
[Adjustment Procedure]
1) 1.5 MHz deviation adjustment
2) 1.7 MHz deviation adjustment
3) BPF adjustment
2) 1.7 MHz deviation adjustment
3) BPF adjustment
Fig. 5-3-22.
TP33(GND)
TP32(R OUT 1)
TP32(R OUT 1)
B
TP31(L OUT 1)
A
TP30(R OUT 2)
TP29(L OUT 2)
TP29(L OUT 2)
CN1
J3
J1(R)
J2(L)
S2
PAL NT
INV SIN
S3
S1
ST
BIL
CH1
CH2
TP27
(GND)
TP28 (DC)
+
-
(+7Vdc to +9Vdc)
(J-6082-312-A)
AFM DEV jig
TP2(R OUT)
B
TP1(GND)
TP3(L OUT)
A
A
: 1.5MHz deviation adjustment.
B
: 1.7MHz deviation adjustment.
When connecting AFM DEV jig.
CN1
TP25
TP24
TP26
B
A
Stabilized power supply
Oscilloscope
Red
White
White
Red
L
R
To Audio terminal
VC-195 board
IC301
@ª
PIN
(REC AFM)
0.01
µ
F
(1-101-004-00)
CN910
!¡
PIN
(RF SWP)
CN910
8
PIN
(GND)
Use the CPC-7 jig
(J-6082-382-A)
(J-6082-382-A)
Pattern generator
In Recording
In Playback
Audio
oscillator
oscillator
Video output
(75
Ω
)
Attenuator
600
Ω
600
Ω
(270
Ω
(1-249-410-11) + 330
Ω
(1-249-411-11))
VIDEO
Main unit
L
R
AUDIO
Audio level meter or
distortion meter
distortion meter
47k
Ω
47k
Ω
: 1-249-437-11
VIDEO
Main unit
L
R
AUDIO
TV monitor
47k
Ω
: 1-249-437-11
CN2
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