5-9
VL-E610S/VL-E610H
VL-E660S/VL-E96E
VL-E98E
5. Adjustment of Y-FM deviation
Measuring instrument
Oscilloscope
Mode
REC/PB (self-playback/recording)
Input signal
Color bar
Measuring point
TL801
Adjustment address
34
Adjustment level
1.0 Vp-p
±
40 mVp-p
(1)Set the recordable tape.
(2)Before entering the adjustment mode, make self-playback/recording of color bar with an external output.
Measure whether the playback output at this time is 1.0 Vp-p on TL801.
(3)Enter the VCR adjustment mode with an adjustment remote control, and select the address 34.
Select the address, using the FF or REW key, and fix it with the PB key.
(4)When decreasing by 10 mVp-p as compared to the measurement value of (2), increase the data of address 34 by about
5 (digit). (Reference)
When increasing by 10 mVp-p as compared to the measurement value of (2), decrease the data of address 34 by about
5 (digit). (Reference)
Select the address, using the FF or REW key, and fix it with the PB key.
(5)Release the adjustment mode, and make self-playback/recording again. When the measuring value at this time is in
the standard value, the adjustment is completed. If it is not in the standard value, repeat the steps (2) - (4).
(6)After completing the adjustment of (5), check the adjusting value of Y-FM carrier f0 (4.2 MHz in no input).
When the measuring value exceeds the standard value of carrier f0, make an adjustment of Y-FM carrier f0 again.
6. Adjustment of Y recording current
Measuring instrument
Oscilloscope
Mode
VCR STOP
Input signal
Color bar
Measuring point
TL451
Adjustment address
35
Adjustment level
200
±
10 mVp-p
(1)Input the color bar signal into the video input/output terminal in the VCR STOP mode.
(2)Enter the VCR adjustment mode with an adjustment remote control, and select the address 35.
Select the address, using the FF or REW key, and fix it with the PB key.
(3)Make an adjustment so that the SYNC TIP portion gets 200 mVp-p on TL451.
Select the data, using the FF or REW key, and fix it with the PB key.
After the adjustment, press the STOP key, and exit from the adjustment address 35.
1.0Vp-p
200mVp-p
C-SYNC
(TL451)
7. Adjustment of comb filter
Measuring instrument
Oscilloscope
Mode
VCR STOP
Input signal
Color bar
Measuring point
TL404
Adjustment address
Phase: 36, Gain: 37
Adjustment level
Minimum chroma component
(1)Input the color bar signal into the video input/output terminal in the VCR STOP mode.
(2)Enter the VCR adjustment mode with an adjustment remote control, and select the address 36.
Select the address, using the FF or REW key, and fix it with the PB key.
(3)Make an adjustment so as to minimize the chroma component on TL404.
Select the data, using the FF or REW key, and fix it with the PB key.
After the adjustment, press the STOP key, and exit from the adjustment address 36.
(4)Enter the VCR adjustment mode with an adjustment remote control, and select the address 37.
Select the address, using the FF or REW key, and fix it with the PB key.
(5)Make an adjustment so as to minimize the chroma component on TL401.
Select the data, using the FF or REW key, and fix it with the PB key.
After the adjustment, press the STOP key, and exit from the adjustment address 37.
(6)Repeat the steps (2) - (3).
Minimum chroma component
