Panasonic DVC PRO Studio AJ-D950P Service Manual page 691

4-6-11.PLL Lock Confirmation
(25M Mode, RP Rch)
Board RF EQ(H4)
Specification V play - V eject <= ± 0.05V
Test Point TP505
Adjustment Service Menu
Point
Input Signal
Mode Playback
Tape VFM3580KM (Color Bar Portion)
M.EQ Oscilloscope
1. Measure the voltage at TP505 in the Eject mode.
( V eject )
2. Playback the 25M Master Tape.
Note : A normal picture is not appeared on the
monitor.
3. Set the items in the Service Menu as follows.
D22 RP PLL PHS R :
D23 RP PLL SL R
D42 PB MODE
4. Measure the Voltage at TP505 ( V play )
5. Adjust D36 RP PLL VCO R so that the voltage is
in the specification.
6. Confirm the red segment is not displayed on the
Error meter about R1 and R2
7. If it is not, adjust D22 RP PLL PHS R and D23 RP
PLL SL R and return to the step 5.
25
: -5
: RP H
4-6-12.ADC Level Coarse Adjustment
Board RF EQ (H3) XCAN(H2)
Specification
Test Point TP1,TP2(H2) TP2(H3)
Adjustment Service Menu
Point
Input Signal
Mode Playback
Tape VFM3580KM (Color Bar Portion)
M.EQ Oscilloscope
1. Scope CH1 : TP1(H2)
CH2 : TP2(H3)
2. Open the Service Menu and select the item B00
EQ ED ADJUST.
3. Playback a 25M Master Tape.
4. Adjust B37 ADC LEVEL L so that the noise level
is minimized as shown in the following figure.
5. Change the connection of scope CH1 to the
TP2(H2) from TP1(H2).
6. Adjust B38 ADC LEVEL R so that the noise level
is minimized as shown in the following figure.
7. Escape the EQ ED ADJUST Menu and select the
D00 EQ DP ADJUST Menu.
8. Adjust D38 ADC LEVEL R so that the noise level
is minimized as shown in the following figure.
9. Change the connection of scope CH1 to the
TP1(H2) from TP2(H2).
10. Adjust D37 ADC LEVEL L so that the noise level
is minimized as shown in the following figure.
Note
Confirm that the DC level is not held around ± 2.5V.
C H 1
C H 2
Minimize a noise in this
period
N G
O K
N G