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5. PLL f
& LPF f
Final Adjustment (VC-213 board)
0
0
Mode
VTR stop
Signal
Arbitrary
Measurement Point
Display data of page: 3, address: 03
Measuring Instrument
Adjustment remote commander
Adjustment Page
C
Adjustment Address
1F, 20, 22, 47
Specified Value
Bit values of bit2, bit3 and bit6 are “0”
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2)
Select page: 3, address: 01, set data: 30, and press the PAUSE
button of the adjustment remote commander.
3)
Select page: 3, address: 02, and check that the data changes to
“00”.
4)
Select page: 3, address: 03, and check that bit values of bit2,
bit3 and bit6 are “0”.
If bit value of bit 2, bit 3 or bit 6 is “1”, there are errors. (For
the error contents, see the following table. For the bit values,
refer to “5-4. SERVICE MODE”, “4-3. 3. Bit value
discrimination”.)
Bit value of page: 3,
Error contents
address: 03
bit 6 = 1
LPF f
adjustment is defective
0
bit 3 = 1
PLL f
fine adjustment is defective
0
bit 2 = 1
PLL f
fine adjustment is defective
0
5)
Select page: 0, address: 01, and set data: 00.
6. Hi8/standard 8mm Switching Position Adjustment
(VC-213 board)
If deviated in this case causes switching noise or jitter on the Hi8/
standard 8mm mode played back screen.
Mode
Playback
Signal
Hi8/standard 8mm alignment tape:
For tracking adjustment
(WR5-1NP(NTSC))
(WR5-1CP(PAL))
CH1: Pin 8 of CN910 (VC RF SWP)
Measurement Point
CH2: Pin 5 of CN910 (PB RF)
Measuring Instrument
Oscilloscope
Adjustment Page
F
Adjustment Address
3E, 3F
t1=0 ± 10 µsec
Specified Value
Adjusting Method:
1)
Select page: 0, address: 01, and set data: 01.
2)
Select page: F, address: 2C, set data: 20, and press the PAUSE
button of the adjustment remote commander.
3)
Select page: 2, address: 2E, and set data: 02.
4)
Set to the playback mode.
5)
Select page: F, address: 3E, change the data and minimize “t1”,
and then press the PAUSE button. (Coarse adjustment)
6)
Select page: F, address: 3F, change the data and adjust so that
the switching position (t1) becomes the specified value. (Fine
adjustment)
7)
Press the PAUSE button.
8)
Select page: F, address: 2C, set data: 00, and press the PAUSE
button.
9)
Select page: 2, address: 2E, and set data: 00.
10) Select page: 0, address: 01, and set data: 00.
CH1
CH2
Enlargement
CH1
t1=0 ± 10 µ sec
CH2
Fig. 5-3-7.
5-49
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