Sony DCR-TRV10 Service Manual - Page 129

APC & AEQ Adjustment VC-217 board, 4. Processing after Completing Adjustments, PLL f

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5-3. APC & AEQ Adjustment (VC-217 board) Mode Signal Measurement Point Measuring Instrument Adjustment Page Adjustment Address Specified Value Playback Recorded signal at "Preparations before adjustments" Pin @º of CN2904 (RF MON) (Note 1) Oscilloscope C 18, 19, 1B, 1C, 21, 73 The display data of page: 3, address: 03 is "00" Note 1: Connect a 75Ω resistor between Pin @º and Pin !ª (GND) of CN2904. 75Ω resistor (Parts code: 1-247-804-11) Note 2: The "AGC Center Level Adjustment" must have already been completed before starting this adjustment. Adjusting method: 1) Select page: 0, address: 01, and set data: 01. 2) Playback the recorded signal at "Preparations before adjustments" 3) Select page: 3, address: 33, and set data: 08. 4) Check that the playback RF signal is stable. 5) Select page: 3, address: 01, set data: 07, and press the PAUSE button of the adjustment remote commander. 6) Select page: 3, address: 02, and check that the data changes from "07" to "00" in about 15 seconds after pressing the PAUSE button. 7) Select page: 3, address: 03, and check that the data is "00". Note: If the data of page: 3, address: 03 is other than "00", adjustment has errors. (Take an appropriate remedial measures according to the errors referring to the following table. ) 8) Perform "Processing after Completing Adjustments". Data of page: 3, address: 03 20 30 50 60 80 Contents of defect Perform re-adjustment. (Note 3) The machine is defective Perform re-adjustment (Note 3) The machine is defective The machine is defective Note 3: If this data is displayed twice successively, the machine is defective. 6. PLL f0 & LPF f0 Final Adjustment (VC-217 board) Mode Signal Measurement Point Measuring Instrument Adjustment Page Adjustment Address Specified Value VTR stop Arbitrary Display data of page: 3, address: 03 Adjustment remote commander C 1F, 20, 22, 47 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 bit2, bit3 and bit 6 of the data are "0". Note: If bit2, bit3 or bit 6 of the data 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".) 5) Select page: 0, address: 01, and set data: 00. Bit value of page: 3, Error contents address: 03 bit 4 = 1 PLL f0, even channel is defective bit 5 = 1 PLL f0, odd channel is defective bit 6 = 1 LPF f0 is defective bit 3 = 1 PLL f0 final adjustment is defective bit 2 = 1 PLL f0 final adjustment time-out 5-4. Processing after Completing Adjustments 1) Select page: 2, address: 30, and set data: 00. 2) Select page: 3, address: 33, and set data: 00. 3) Select page: 0, address: 01, and set data: 00. 5-43

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5-43
5-3. APC & AEQ Adjustment (VC-217 board)
Mode
Playback
Signal
Recorded signal at “Preparations
before adjustments”
Measurement Point
Pin
@º
of CN2904 (RF MON) (Note 1)
Measuring Instrument
Oscilloscope
Adjustment Page
C
Adjustment Address
18, 19, 1B, 1C, 21, 73
Specified Value
The display data of page: 3, address:
03 is “00”
Note 1:
Connect a 75
Ω
resistor between Pin
@º
and Pin
!ª
(GND) of
CN2904.
75
Ω
resistor (Parts code: 1-247-804-11)
Note 2:
The “AGC Center Level Adjustment” must have already been
completed before starting this adjustment.
Adjusting method:
1)
Select page: 0, address: 01, and set data: 01.
2)
Playback the recorded signal at “Preparations before
adjustments”
3)
Select page: 3, address: 33, and set data: 08.
4)
Check that the playback RF signal is stable.
5)
Select page: 3, address: 01, set data: 07, and press the PAUSE
button of the adjustment remote commander.
6)
Select page: 3, address: 02, and check that the data changes
from “07” to “00” in about 15 seconds after pressing the PAUSE
button.
7)
Select page: 3, address: 03, and check that the data is “00”.
Note:
If the data of page: 3, address: 03 is other than “00”, adjustment
has errors. (Take an appropriate remedial measures according
to the errors referring to the following table. )
8)
Perform “Processing after Completing Adjustments”.
Note 3:
If this data is displayed twice successively, the machine is defective.
5-4. Processing after Completing Adjustments
1)
Select page: 2, address: 30, and set data: 00.
2)
Select page: 3, address: 33, and set data: 00.
3)
Select page: 0, address: 01, and set data: 00.
Data of page: 3,
address: 03
20
30
50
60
80
Contents of defect
Perform re-adjustment. (Note 3)
The machine is defective
Perform re-adjustment (Note 3)
The machine is defective
The machine is defective
6. PLL f
0
& LPF f
0
Final Adjustment (VC-217 board)
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
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 bit2, bit3 and bit 6
of the data are “0”.
Note:
If bit2, bit3 or bit 6 of the data 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”.)
5)
Select page: 0, address: 01, and set data: 00.
Bit value of page: 3,
address: 03
bit 4 = 1
bit 5 = 1
bit 6 = 1
bit 3 = 1
bit 2 = 1
Error contents
PLL f
0
, even channel is defective
PLL f
0
, odd channel is defective
LPF f
0
is defective
PLL f
0
final adjustment is defective
PLL f
0
final adjustment time-out