Luxman DZ-112 Service Manual

| DZ-112
Distortion Meter
Analog Fixed
Output (L, R)
Qo
Test CD
Set Noise Meter
* t
Play 5th Track of —60dB Range
Test
CD
IHF-A
Filter
On
SONY
YEDS-18
(JIS-A)
A-BEX TCD-782 Figure 10
(2) Switch Settings
Power Switch ccccecce scree erect eset e teen ee eenes ON
Play Switch ccccsrecce reer sree t eens eee ene ee enes ON
Others CEE CO eR RO ee maar Te Ee Te ee a OFF
Step Description Oscillator Input | Test Point Adjustment
Measure the voltage at T.P.1. Then adjust
Figure 6 VR1303 so that the output voltage at
rer | =
T.P.2 becomes 1/2 of the voltage at
T.P.1.
Tracking Gain : 1kHz
4 F
Adjustment 100mV
Focus Gain ; {kHz
2 Adjustment 10O0mV
me
Test CD
SONY YEDS-18 (Second track) Tracking Error Balance Adjustment
VCO Adjustment
Adjust VR1202 to obtain at T.P.3 the
maximum output waveform similar to that
shown in Figure 11.
Focus Bias
Adjustment
Short circuit T.P.4 and fully rotate RC1301
in a counterclock direction. Then adjust
VR1201 so that the output voltage at
T.P.6 becomes O+ 1° mv.
After completing the adjustment, rotate
VR1301 back to near its center position.
Tracking Error
Balance Adjustment
Adjust VR1301 so that one pointer of the
AC voltmeter comes above the other one.
Adjust VR1302 so that one pointer of the
AC voltmeter comes above the other one.
Play back the —60dB 1kHz signal (Sth
track) of the test CD (SONY YEDS-18,
A-BEX TCD-782) and amplify by 60dB
D/A
Converter
Analog
using
the
noise
meter
encoded
with
the
MSB
Adjustment
Fixed
IHF-A
(JIS-A)
curve.
ae
Output
Then
measure
the
distortion
rate
on
the
AC output of the noise meter, and adjust
separately VR1404 for the right channel
and VR1403 for the left channel.
Pea to al
ANRC
FV\\\ AAA
TVA VAAN
SONY YEDS-18 (Second track) ~Other Adjustments Ay IV p-p
A-BEX TCD-782 (Second track) -Tracking Error Balance Adjustment \ WV
A-BEX TCD-782 (Second track) Other Adjustments WWW VY VY
| OAS YY
See eae Figure 11

Luxman DZ-112 Specifications

General

Brand	Luxman
Model	DZ-112
Category	CD Player
Language	English