Panasonic AJSD955B - DVCPRO50 STUDIO DECK, Service Manual

Page: 190 / 562

ELE-49
5-11. Component Pb Signal Timing
Adjustment
BOARD V IN (F2A)
TP Component Y/Pb OUT
ADJ. C05: NENT PB TMG (Service Menu)
TAPE -----
INPUT Analog Component Signal (Bowtie)
MODE EE
M. EQ Analog WFM (Bowtie mode)
SPEC. Relative Timing: 0 ± 5nsec
(This adjustment performs without extender board.)
1. Open the SERVICE MENU. (Refer to SEC1
Service Information.)
2. Select the C00: VIN ADJUST and press the
“SET” button to open the V IN ADJUST MENU.
3. Select C-1 CMPNT ADJUST and press the
“SET” button to open the CMPNT ADJUST
menu.
4. Adjust the C05 NENT PB TMG so that the
crossing point of the Bowtie signal becomes a
center (Timing =
0 ± 5nsec
).
5. Close the menu.
<Note>
Incase of WFM does not have “Bow tie mode” (Y-Pb
timing adjustment mode), if the oscilloscope has
“ADD” and “INVERT” switch, it is possible to make the
following waveform by those switch.
5-12. Component Pr Signal Timing
Adjustment
BOARD V IN (F2A)
TP Component Y/Pr OUT
ADJ. C08: NENT PR TMG (Service Menu)
TAPE -----
INPUT Analog Component Signal (Bowtie)
MODE EE
M. EQ Analog WFM (Bowtie mode)
SPEC. Relative Timing: 0 ± 5nsec
(This adjustment performs without extender board.)
1. Open the SERVICE MENU. (Refer to SEC1
Service Information.)
2. Select the C00: VIN ADJUST and press the
“SET” button to open the V IN ADJUST MENU.
3. Select C-1 CMPNT ADJUST and press the
“SET” button to open the CMPNT ADJUST
menu.
4. Adjust the C08 NENT PR TMG so that the
crossing point of the Bowtie signal becomes a
center (Timing =
0 ± 5nsec
).
5. Close the menu.
<Note>
Incase of WFM does not have “Bow tie mode” (Y-Pr
timing adjustment mode), if the oscilloscope has
“ADD” and “INVERT” switch, it is possible to make the
following waveform by those switch.