5-51
2. 1.7 MHz Deviation Adjustment (VC-195 board)
Sets the spectrum of the R-ch ((L-R)/2 signal) level modulated during
recording. If deviated, the crosstalk signal of the audio signal will
occur and the audio level will drop during both playback and
recording.
Mode
VTR recording
Signal
Input the AFM DEV jig output signal to
the left and right audio input terminal
Measurement Point
CH1: AFM DEV jig TP32
CH2: AFM DEV jig TP2
Measuring Instrument
Oscilloscope
ADD mode
CH2 normal mode
Adjustment Page
F
Adjustment Address
46
Specified Value
The level difference between CH1 signal
and CH2 signal should be minimum.
Connection:
1) Connect TP24 and TP26 of the AFM DEV jig to CN910 of the
VC-195 board.
TP24 (GND) ..................... Pin
8
of CN910
TP26 (RF SWP) ................ Pin
!¡
of CN910
2) Connect TP25 (REC AFM) of the AFM DEV jig to Pin
@ª
of
IC301 with a 0.01
µ
F capacitor (1-101-004-00).
3) Connect the audio output terminal (J1 and J2) of the AFM DEV
jig to AUDIO terminal of the unit.
4) Connect TP28 (DC), TP27 (GND) of the AFM DEV jig to the
DC power supply (+7Vdc to +9Vdc).
5) Set the AFM DEV jig switches to the following positions.
S1 ............................... BIL Position
S2 ............................... PAL Position
S3 ............................... INV Position
Preparations:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 14, after memorizing the data, set the
bit value of bit1 to “1”. (Refer to “3. Bit value discrimination”
of “3-1-8. Service mode”).
3) Select page: D, address: 15, after memorizing the data , set the
bit value of bit7 to “0”.
4) Set to recording mode. (Use the wireless remote commander
of 8mm VCR, or connect Pin
6
of CN935 of DD-105 board
and GND with 4.7k
Ω
resistor for a second.)
4.7k
Ω
resistor: 1-249-425-11
Adjusting method:
1) Match the vertical ranges of CH1 and CH2 of the oscilloscope
to each other.
2) Set the oscilloscope to the ADD mode and CH2 to the normal
mode.
3) Select page: 0, address: 01, and set data: 01.
4) Select page: F, address: 46, change the data and minimize the
audio signal level difference (A).
5) Press the PAUSE button of the adjusting remote commander.
6) Select page: 0, address: 01, and set data: 00.
Fig. 5-3-17.
Approx. 2msec
A
Processing after completed adjustment:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 14, and set the data memorized at step
2) of “Preparations”.
3) Press the PAUSE button of the adjusting remote commander.
4) Select page: D, address: 15, and set the data memorized at step
3) of “Preparations”.
5) Press the PAUSE button of the adjusting remote commander.
6) Select page: 0, address: 01, and set data: 00.
Содержание Handycam Vision CCD-TRV300E
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Страница 47: ...CCD TRV300E SECTION 3 BLOCK DIAGRAMS 3 1 OVERALL BLOCK DIAGRAM 3 1 3 2 3 3 3 4 ...
Страница 54: ...CCD TRV300E 3 26 3 27 3 28 3 8 B W EVF BLOCK DIAGRAM CCD TRV300E H 1Vp p IC901 11 H 2 2Vp p IC901 13 ...
Страница 55: ...CCD TRV300E 3 29 3 30 3 31 3 32E 3 9 POWER BLOCK DIAGRAM ...
Страница 57: ...CCD TRV300E 4 4 4 5 4 6 FRAME SCHEMATIC DIAGRAM 2 FRAME 2 ...
Страница 67: ...CCD TRV300E For schematic diagrams Refer to page 4 11 for Printed Wiring Board SERVO VC 195 7 9 4 39 4 38 4 40 ...
Страница 72: ...CCD TRV300E 4 57 4 58 4 59 STEREO MIC MA 332 ...
Страница 73: ...CCD TRV300E 4 60 4 61 4 62 PS 8990 CF 54 CONTROL SWITCH BLOCK PANEL SWITCH ...