Servo And Rf System Adjustments; Capstan Fg Adjustment (Cm-59 Board); Pll F Pre-Adjustment (Rp-234 Board); Switching Position Adjustment (Rp-234 Board) - Sony DSR-25 Service Manual

DSR-25

3-3. SERVO AND RF SYSTEM ADJUSTMENTS

1. Capstan FG Adjustment (CM-59 Board)

Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
1) Close the cassette compartment without tape.
2) Select page: 0, address: 01, and set data: 01.
3) Select page: 3, address: 01, set data: 1B, and press the PAUSE
button of adjustment remote commander.
4) Select page: 3, address: 02 , and check that the data change to
" 1B " → " 2B " → " 00 ".
5) Select page: 3, address: 03, and check data: " 00 ".
Note: If page: 3, address: 03 is " 01 ", there are errors.
6) Set page: 0, address: 01, and set data: 00.
2. PLL f Pre-adjustment (RP-234 Board)
0
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
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 the data is " 00 ".
5) Select page: 0, address: 01, and set data: 00.
RadarW RadarW RadarW
E-E
No signal
Displayed data of page: 3, address:
03
Adjustment remote commander
C
16
" 00 "
RadarW RadarW RadarW RadarW RadarW
E-E
No signal
Displayed data of page: 3, address:
03
Adjustment remote commander
C
1F, 20, 22, 47
" 00 "

3. Switching Position Adjustment (RP-234 Board)

RadarW RadarW RadarW
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: 3, address: 01, set data: 0D, 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 the data is " 00 ".
5) Select page: 0, address: 01, and set data: 00.

4. RF-AGC Adjustment (RP-234 Board)

Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
1) Record the color bar signal in the optional tape about 2 min-
utes.
2) Select page: 0, address: 01, and set data: 01.
3) Select page: C, address: 54, set data: CC, and press the PAUSE
button of the adjustment remote commander.
4) Select page: 3, address: 1D, set data: 21, and press the PAUSE
button.
5) Play back the recorded section.
6) Select page: 3, address: 01, set data: 23, and press the PAUSE
button.
7) Select page: 3, address: 02, and check that the data changes to
" 00 ".
8) Select page: 3, address: 03, and check that the data is " 00 ".
9) Select page: 3, address: 1D, set data: 20, and press the PAUSE
button.
10) Select page: C, address: 54, set data: 00, and press the PAUSE
button.
11) Select page: 0, address: 01, and set data: 00.
5-52
Playback
Alignment tape: SW/OL standard
(XH2-3)
Displayed data of page: 3, address:
03
Adjustment remote commander
C
10, 11, 12, 13
" 00 "
RadarW RadarW RadarW RadarW RadarW
Recording and playback
Color bar
Displayed data of page: 3, address:
03
Adjustment remote commander
C
1E
" 00 "