Clk Delay And Aeq Adjustment (Rp-234 Board); Pll F Final Adjustment (Rp-234 Board); Video System Adjustments; Board Adjustment - Sony DSR-25 Service Manual

5. CLK DELAY and AEQ Adjustment (RP-234 Board)

RadarW RadarW RadarW RadarW RadarW
Mode Recording and playback
Signal Color bar
Measurement Point Displayed data of page: 3, address:
03
Measuring Instrument Adjustment remote commander
Adjustment Page C
Adjustment Address 18, 19, 1B, 1C, 21, 73
Specified Value " 00 "
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: 07, 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.
6. PLL f Final Adjustment (RP-234 Board)
0
Mode E-E
Signal No signal
Measurement Point Displayed data of page: 3, address:
03
Measuring Instrument Adjustment remote commander
Adjustment Page C
Adjustment Address 1F, 20, 22, 47
Specified Value " 00 "
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.

3-4. VIDEO SYSTEM ADJUSTMENTS

3-4-1. JC-21 Board Adjustment

1. VFD SPCK Adjustment (JC-21 Board)

Mode
Signal
Measuring Point
Measuring Instrument
Adjustment Element
Specified value
Adjusting method:
1) Set the VFD SPCK frequency (f) to the specified value using
CT3300.
2. A/D Converter Reference Voltage Adjustment (1)
(JC-21 Board)
Mode
Signal
Measuring Point
Measuring Instrument
Adjustment Element
Specified value
Adjusting method:
1) Set the VRT voltage (A) to the specified value using RV1100.
3. A/D Converter Reference Voltage Adjustment (2)
RadarW RadarW RadarW
(JC-21 Board)
Mode
Signal
Measuring Point
Measuring Instrument
Adjustment Element
Specified value
Adjusting method:
1) Set the VBT voltage (A) to the specified value using RV1101.
5-53
E-E
No signal
Pin 5 of IC3302 (CL3305)
Frequency counter
CT3300
f = 13500000 ± 20 Hz
E-E
Arbitrary
Pin 5 of IC1105 (CL1170)
Digital voltmeter
RV1100
A = 2.83 ± 0.01 Vdc
E-E
Arbitrary
Pin 3 of IC1105 (CL1169)
Digital voltmeter
RV1101
A = 0.96 ± 0.01 Vdc
DSR-25