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5-44
DCR-TRV16/TRV16E/TRV18/TRV18E/TRV116E/TRV118E
3-3.
SERVO AND RF SYSTEM ADJUSTMENT
Before perform the servo and RF system adjustments, check that
the specified value of “36 MHz Origin Oscillation Adjustment” of
“CAMERA SYSTEM ADJUSTMENT” is satisfied.
And check that the data of page: 0, address: 10 is “00”. If not, set
data: 00 to this address.
the specified value of “36 MHz Origin Oscillation Adjustment” of
“CAMERA SYSTEM ADJUSTMENT” is satisfied.
And check that the data of page: 0, address: 10 is “00”. If not, set
data: 00 to this address.
Adjusting Procedure:
1.
1.
CAP FG duty adjustment
2.
PLL f
0
& LPF f
0
adjustment
3.
Switching position adjustment
4.
AGC center level and APC & AEQ adjustment
5.
PLL f
0
& LPF f
0
fine adjustment
1. Cap FG Duty Adjustment (VC-280 Board)
Set the Cap FG signal duty cycle to 50% to establish an appropriate
capstan servo. If deviated, the uneven rotation of capstan and noise
can occur.
capstan servo. If deviated, the uneven rotation of capstan and noise
can occur.
Measurement Point
Display data of page: 3, address: 02, 03
Measuring Instrument
Adjustment remote commander
Adjustment Page
C
Adjustment Address
16
Specified Value
Data of page: 3, address: 02 is “00”.
Data of page: 3, address: 03 is “00”.
Data of page: 3, address: 03 is “00”.
Note1:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data
Procedure
1
Close the cassette compartment
without inserting a cassette.
without inserting a cassette.
2
0
01
01
Set the data.
3
3
01
1B
Set the data, and press PAUSE
button.
button.
4
3
02
Check that the data changes in
the following order.
“1B”
the following order.
“1B”
t “2B” t “00”
5
3
03
Check that the data is “00”.
(Note2)
(Note2)
6
0
01
00
Set the data.
Note2:
If the data is “01”, adjustment has errors or the mechanism deck is
defective.
defective.
2. PLL f
0
& LPF f
0
Adjustment (VC-280 Board)
Mode
VTR stop
Measurement Point
Display data of page: 3, address: 02, 03
Measuring Instrument
Adjustment remote commander
Adjustment Page
C
Adjustment Address
1F, 20, 22, 29
Specified Value
Data of page: 3, address: 02 is “00”.
Data of page: 3, address: 03 is “00”.
Data of page: 3, address: 03 is “00”.
Note1:
The data of page: 0, address: 10 must be “00”.
Adjusting method:
Order Page Address Data
Procedure
1
0
01
01
Set the data.
2
C
21
DC
Set the data, and press PAUSE
button.
button.
3
3
01
30
Set the data, and press PAUSE
button.
button.
4
3
02
Check that the data changes to
“00” with in 5 sec. (Note2)
“00” with in 5 sec. (Note2)
5
3
03
Check that the data is “00”.
(Note2)
(Note2)
6
0
01
00
Set the data.
Note2:
If it isn’t satisfied, select page: C, address: 21, set the following
data, and press the PAUSE button, and repeat steps 3 to 5.
data, and press the PAUSE button, and repeat steps 3 to 5.
There are errors when it isn’t satisfied even if the above treatment
is done.
If bit2, bit3, bit4, bit5 or bit 6 of the data of page: 3, address: 03 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”.)
is done.
If bit2, bit3, bit4, bit5 or bit 6 of the data of page: 3, address: 03 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”.)
Setting data
E0
D8
E4
D4
When the data of page: C, address: 21 is “DC”.
When the data of page: C, address: 21 is “E0”.
When the data of page: C, address: 21 is “D8”.
When the data of page: C, address: 21 is “E4”
Bit value of page: 3,
address: 03 data
address: 03 data
bit 2 = 1 or bit 3 = 1
bit 4 = 1 or bit 5 = 1
bit 6 = 1
Error contents
PLL f
0
fine adjustment is defective
PLL f
0
adjustment is defective
LPF f
0
is defective
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