Read Sony DCR-TRV340 Service Manual online
5-42
DCR-TRV340
3-3.
SERVO AND RF SYSTEM ADJUSTMENT
Before perform the servo and RF system adjustments, check that
the specified value of “27 MHz Origin Oscillation Adjustment” of
“VIDEO 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 “27 MHz Origin Oscillation Adjustment” of
“VIDEO 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.
REEL FG 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
6.
Hi8/Standrd8 switching position adjustment
7.
Cap FG duty adjustment
1. REEL FG Adjustment (VC-276 board)
Compensates the dispersion of the hall elements.
Measurement Point
Display data of page: 3, address: 03
Measuring Instrument
Adjustment remote commander
Adjustment Page
C
Adjustment Address
17, 2F
Specified Value
00 or 01 or 04 or 05
Note:
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
1C
Set the data, and press PAUSE
button.
button.
4
3
02
Check that the data changes to
“00”,
“00”,
5
3
03
Check that the data is “00” or “01”
or “04” or “05”. (Note)
or “04” or “05”. (Note)
6
0
01
00
Set the data.
Note:
If the data is other value, adjustment has errors. (Take an appropriate
remedial measures according to the errors referring to the following
table.)
remedial measures according to the errors referring to the following
table.)
Data
Contents of defect
02, 03, 06, 07
T reel is defective
08, 09, 0C, 0D
S reel is defective
0A, 0B, 0E, 0F
S reel and T reel are defective
2. PLL f
0
& LPF f
0
Adjustment (VC-276 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
CA
Set the data, and press PAUSE
button.
button.
3
3
01
00
Set the data, and press PAUSE
button.
button.
4
3
01
30
Set the data, and press PAUSE
button.
button.
5
3
02
Check that the data changes to
“00” with in 10 sec. (Note2)
“00” with in 10 sec. (Note2)
6
3
03
Check that the data is “00”.
(Note2)
(Note2)
7
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 6.
data, and press the PAUSE button, and repeat steps 3 to 6.
Setting data
When the data of page: C, address: 21 is “CA”.
CE
When the data of page: C, address: 21 is “CE”.
C6
When the data of page: C, address: 21 is “C6”.
D2
When the data of page: C, address: 21 is “D2”
C2
RadarW
RadarW
RadarW
RadarW
RadarW
RadarW
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”.)
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”.)
Bit value of page: 3,
Error contents
address: 03 data
bit 2 = 1 or bit 3 = 1
PLL f
0
fine adjustment is defective
bit 4 = 1 or bit 5 = 1
PLL f
0
adjustment is defective
bit 6 = 1
LPF f
0
adjustment is defective
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