Adjustment - Sharp Rx-100H Serviceanleitung

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ADJUSTMENT a
PREPARATION FOR ADJUSTMENT 7 : 2
and APMS), Fs = 44.1 kHz
Blank tape {tape on which no program has been
recorded)
Sony's TW-7131 or equivalent torque cassette tape
Sony's TY-7111 reference tape
Prepare the circuit (Fig. 28-1) jig for ATF adjustment.
Prepare the circuit (Fig. 30-1} jig for playback PLL
adjustment.
When traveling the tape without cassette housing
Open the DAT cassette tape lid by hand, and fix the lid
with vinyl tape to use.
* Set the cassette tape (its lid is opened) in the mech-
anism. So as to stabilize the cassette tape put a weight
* * * * *
*N
ADJUSTMENT OF MECHANISM CIRCUIT
1. Adjustment of Tension Gain
Move the tension sensor by hand in the direction A to
detach from the photointerrupter. (See Fig. 34 (b).)
ELECTRONIC VOLTMETER
Adjusting Instrument Connection
Part
VR801 45+0.1V Pin 2 of CNP804
(Red} and (Ground)
Test Stage Adjusting | Setting/ oe
Part Adjusting oe
Play torque VR305 10+ 1 g-cm Take-up reel
Review torque| VR306 10 + 1 g-em Supply reel
3. Adjustment of Record Signal Offset
Mount a blank tape, and set record mode.
RECORD MODE TP1(GND)
MECHANISM PWB
ae
GND
EQUALIZER AMP, PwB OSCILLOSCOPE
TP1¢GND)
ri NAA
RECORD SIGNAL OFFSET
Figure 24-2
§0nS/DIV
=—94—