Sharp RX-100H Serviceanleitung Seite 20

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10. Adjustment of Playback PLL
Mount a commercially available music tape, and set play-
back mode.
' Adjusting Setting/Adjusting Instrument Connection
Part
-TC5O1 Apply trigger at TP3,TP3(HSW)
observe TP20, and set as} TP2Q{PLL error
shown in Fig. 30-17 (1). voltage) TP1Q(IDP}
"Connect an instrument as shown in Fig. 30-1 (2), and set
GUE mode.
VR503
OtO05V
TP20 (PLL error voltage)
SIGNAL. GENERATOR
SIGNAL 0.047 uF
GENERATOR O——} to IC611
. onm
o————0 GND
11. Adjustment of Digital 1/0 PLL
Prepare a normal DAT recorder, connect it with optical
cable, and set the commercially available music tape to
playback mode.
Next, mount a blank tape, and in record halt state turn on
the digital input switch (SW754).
| Adjusting Setting/Adjusting Instrument Connection
Part
VR501 Set so that interval A TP15
is equal tointervalB. = |
IOk ohm
TP 20
102
N.P
GND
PLAYBACK PLL
Figure 30-1
LIGHT
TRANSMISSION
CABLE
OUT
PREPARE A NORMAL
DAT
MAIN PWB
TP 15
OSCILLOSCOPE
Ss
4
: el ADJUST VR SO THAT THIS PART
heen OF WAVEFORM BE COMS PARALLEL. :
—— wag enna
PLAYBACK PLL
IN
OSCILLOSCOPE
DIGITAL 1/0 PLL
DIGITAL 1/0 PLL
Figure 30-2
APPLY TRIGGER TO SIGNAL
WITH OSCILLOSCOPE CH-2,