Sony EVO-720P - Page 259

PCM master clock adjustment
(PD-16P/MB-9P boards) )
2. PGM playback VCO free oscillation frequency
adjustment (PD-16P/MB-9P boards))
Mode EE Mode Playback
Signal Non-signal Signal Arbitrary tape
Pin of IC854 on PD-16P
Measurement Point Pin ® of CNOOE on asa
board. (MEK)
Measurement Point board
Measuring Instrument | Frequency counter
Measuring Instrument } Frequency counter
Adjusting Element RV851_ on PD-6P board
Adjusting Element RV854 on PD-6P board
Specified Value 11.450,01 MHz
Specified Value 11.58+0,05 MHz
djusting method :
Connect Pin @.(PCO IN) to Pin @ (VCC 5V) on
the PD-16P board with a jumper.
Adjust to 11.45+0,01 MHz with RV8S51.
Remove the jumper,
Connect Pin @ on the PD-16P board to GND with
ajumper,
Confirm that Irequency is 11.63 MHz or higher.
Approx. 4 Vp-p
Fig. 8-51.
Note: Remove the PA-11P board before adjusting.
Connection :
1) Connect Pin © (DUTY) of CN861 to Pin @ (VCC
SV) of CN852 on the PD-16P board with a jumper.
2) Connect Pin @ (PR PCM CARRIER) of CN852
to Pin (9) (GND) of CN852 on the PD-16P board with
ajumper.
Adjusting method :
1) Adjust to 11,.5840.05 MHz with RV854 on the
PD-16P board.
Approx. 5 Vp-p
Fig. 8-52.
—337—