Apc & Aeq Adjustment (Vc-245 Board); Processing After Completing Adjustments - Sony DCR-PC4E Service Manual

4-3. APC & AEQ Adjustment (VC-245 Board)
Mode Playback
Signal Recorded signal at "Preparations
before adjustments"
Measurement Point Pin w; of CN004 (RF MON) (Note 1)
Ext. trigger: Pin qj of CN004 (SWP)
Measuring Instrument Oscilloscope
Adjustment Page C
Adjustment Address 18, 19, 1B, 1C, 21, 2C
Specified Value The data of page: 3, address: 03 is
"00"
Note 1: Connect a 75Ω resistor between Pin w; and Pin ql (GND) of
CN004.
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:
Order Page Address Data
1
2 0 01 01
3 3 33 08
4
5 3 01 07
6 3 02
7 3 03
8
Note3: If the data is other than "00", adjustment has errors. Take an
appropriate remedial measures according to the errors referring to
the following table.
Data Contents of defect
20 Perform re-adjustment. (Note 4)
30 The machine is defective
50 Perform re-adjustment. (Note 4)
60 The machine is defective
80 The machine is defective
Note 4: If this data is displayed twice successively, the machine is defective.
PB RF signal is stable
Pin w;
Pin qj
Procedure
Playback the recorded signal at
"Preparations before
adjustments"
Set the data.
Set the data.
Confirm that the playback RF
signal is stable. (Fig. 5-3-6.)
Set the data, and press PAUSE
button.
Check that the data changes
from "07" to "00" in about 20
seconds after pressing PAUSE
button.
Check that the data is "00".
(Note3)
Perform "Processing after
Completing Adjustments".
6.7 msec
Fig. 5-3-6.

4-4. Processing after Completing Adjustments

Order Page Address Data
1 2 30
2 3 33
3 0 01
5-45
Procedure
00 Set the data.
00 Set the data.
00 Set the data.