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CD
ADJUSTMENT
Electrical Adjustment
TP2 owe
Oscillo-Scope
So far we
have
presented
explanations
regarding
compact
disc
anit e
player handling, notes prior to repair, handling the pick-up and
0rey
190K
disassembly
of the
unit.
Be
sure
to
carefully
read
these
GND
GNO
instructions before making any adjustments.
BAND PASS FILTER
Preparations for Adjustments
Measuring instruments, tools and filter
(4) Oscillator (400Hz, 300mV RMS)
(1) Test disc.: YEDS 18 (Sony)
(5) Frequency Counter (SMHz;
or more)
(2) Oscilloscope : $S5711(10MHz or dual phenomenon)
(6) Screw drivers (non-metalic) for adjustments
or Memoryscope : D$S6521 (Storagescope)
(7) Band Pass Filter
(3) Digital voltmeter (Input impedance 1Mohm
or more)
(8) AC Voltage Meter
Notes: a. The adjustments can be using the equipment
produced
by other
manufactures
provided that the performance
of that
equipment corresponds to that of the above listed models.
b. Use a 10:1 probe for observing signals on the oscilloscope and storage scope.
c. Test disc is subject change without notice.
1.
Initial set
Set the SVR11 at its initial position of adjustment controls as shown in figure below.
SVR11
oe.
»———_ TP4 (GND)
———
- —
TP1 (RF)
2.
Tracking Balance Adjustment
(SVR11)
1. Connect the oscilloscope to TP3 (TE) and TP4(GND.).
5. Adjust SVR11
so that the TE (Tracking
Error) signal wave-
2. Turn on the power of the unit. Insert test disc.
form of TP3 on the oscilloscope is vertically symmetrical rel-
3. Play-back the test disc.
ative to OV. (See figure right side)
4. Continuously
press the forward
search >»
or
backward-
*If the adjustment
is imperfect, become
run
away
the
sled
search >> button to do it
motor (pick-up sending motor), inferior playability.
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