Luxman DZ-112 User manual

SERVICE L7
MANUAL
~ Compact Disc Player
DZ-112

DZ-112
Contents
Specifications vcr ce ee ee ene Een een Cree ee enter Tene ETE EE neat ene es 2
Controls & Switches-Front Panel coccrct ster teeter nent teen tenet e nen renee ena ene e tnt e nnn es 3 to 5
Jacks & Terminals—Rear Panel core creer terete renee en tee eee eee eee eee EEE TET EEE EERE EEE EEE Ene en ES 6
Controls & Switches—Remote Controller cccccr cscs teeter eet eter eee een eee eet teen eee tenet etre enter ne nee e es 7
Disassembly Instructions ccresrte street eter teeter ete teen eet e nett n enter cent e tare e nen ne ene e Enea ne es 8
Adjustment Procedures cirrrtre steer terete etter eee tence tener eee nen nen eet teen tense tere ce rere tent e eas 9 to 10
Adjustment Locations vrrrtcte steers entre trent ene en ene eee e nner ne nen teen eee n ene tet caer rete eee ee teen aes 11
=) Cote} ak Yo 1-1 4 Cc ce 12
Parts Layout on P. C. Boards and Wiring Diagram creer tree rece t terete eter eter renee een e nce en ee ees 13 to 16
Schematic Diagram (1/2) ccrececrer etter et ete teen teen een eee cence ener n eee e eee e tenn Eee e eee ee 17 to 19
Schematic Diagram (2/2) ctrsrcsssrere reste treet ete e tener eee ene tee ener ern e nee e nee nen teense eens 20 to 22
Electrical Parts List cecccc cere teeter tet ete e eter een arenas Pte tener eee nee eet teen eee e nee e ene e ees 23 to 27
Cabinet Assembly Parts List corres rrr r ttre ttt tert n entered nner n te eee ee nn een ene renner nena eee n es 28
Exploded View (Cabinet) cress esc terre rete eee eet cnet eee ern t ent eee e eee ence eee e een e een e ence 29 to 30
Exploded View (CD Mechanism) cerrrctrccr terest eee treet teen n cree een tener e ene n enter eter tana n sentence 31 to 32
CD Mechanism Assembly Parts | 5 33
Packing Assembly Parts List crrreet ttre ttre treet rte etree tee tenn een n tenn eee nett eee e eee e ee terete n eset nee e tines 34
Packing Method View vrrrrrester street teen eect eter e terete entree eee eee etree ener eee Eee ee etn E eee teen eaten Ts 34
Semi-conductor Lead Identifications coer tet rte eet e eee eee e enn eee eee ete e tence net en tenes 35 to 40
Specifications
Sisters. 4 Pored a Wydwae bande pds Seed aes Rey eats ben orate ge Peewee eeu eres Optical (Compact Disc System)
Quantizing Bit Number ccrceres eee eeee eect eee e eee eee ener e renee eee ene e ne Ene E ES 16 Bit Linear System
Channele sitie semis tin aaosle th ecsigg patadeiahie MWe tany cnaahiedae ni Wale S ns aeehieagh eaves tami ee eagens 2 Channels, Stereo
Tel | oO OOOO OOOO OOO SOOOSOOOSOOSOOSCOOOCOSOSIOS Semi-conductor Laser Pick-up
Output Voltage <-cercercceee cee eee encesee cere eenenee sere geesenes eres ens eneenee ener stenoses cnet anes nen eneeeeees OV-+1dB
Frequency Response srrrtstrtterr esc ec ese te teers nce ee ee neeer nee nent erent eet eeeeeree eens ee en ee esc eca ns 5~20kHz + 1dB
T.H.D.C1KHz) cece terete ce seee nee e eset ene e nee e este enn ne tenes eee eenennenengee ene enenecenenetenensenaeseaceee 1.008%
SAN Ratio cccecece ete eee e eee n ene e eee nena eect eee ENTE EE SEEDED ED REST DISA ADE EEE EERE EE ETE SE Eee ER EE EEE EL 99dB
Dynamic Range vrrcerccr teeter teeter eee eee ee ene eee ene nner EEE EEE E EEE EDEL EEE EEE ERE EEE EEE E EEE ES 91dB
Channel Separation (1KHz) crttc rc terete rte tet e tenet eee e eee n eee ene e een nen n renee seen eter enna sn eesee sens 90dB
Headphone
Output
Voltage
(1kHz,
—10dB//8
OhM)
crrecss
etter
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teen
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150mV
+
1dB
Power Supply crrrrrrrtersrrerreseees AC120/220/240V, 50Hz (General European and West German Models Only)
AC120V, 60Hz (North American and Canadian Models Only)
AC240V, 50Hz (England Mode Only)
Power Consumption cccrtcree scree reer eter eee eee e eee eee e eee eee eee EET EEE REALE EERE TEESE EEE EEE EEE EEE - 15W
SOMEBONdUCtOrS. treee teres Rata Re coma ee laa Lote eee erage EEaa Aes ae tena daemaaye’ 21 IC’s, 24 Transistors, 2 FETs,
19 Diodes, 3 Zener Diodes
Dimension (WX HX DD) certtet etter ene e nen e nee nent n nee n nen eee teen e tenn eee t ete tees 438 x 85 x 311 Cmm)
Te | a ea 4.5kg
NOTE: Due to continuing product improvement, specifications and designs are subject to change without no tice.

CONTROLS & SWITCHES — FRONT PANEL
DZ-112
1. POWER BUTTON
Press this button to turn power on and off to the unit.
The contents of the programmed play, random play
and edit play are kept in memory even if the power is
turned off. When one of the programmed play, ran-
dom play and edit play functions has been set, the
programmed operation will start when the power is
turned on. When no programmed operation has been
set, normal playback will start from the first track on
the disc.
2. DISC TRAY
Place a disc on this tray, label side up. A light touch
“on the tray, when open, will cause it to retrack back
into the unit ready for play. Pressing PLAY, STOP,
PAUSE, A-SCAN or any of the DIRECT ACCESS but-
tons will also close the tray and cause the unit to go
into immediate play operation.
NOTE: To use 8 cm (3 inch) single CD's, place them
on the inner circular grooved area marked “8
cm disc” on the tray.
3.. VACUUM FLUORESCENT DISPLAY
Track, index, time and programming functions are all
simultaneously shown in this display. Refer to “opera-
tion guidelines” for details.
4. REPEAT Button
In normal play or random play mode, press this button
to repeat all tracks on a disc.
In programmed play or edited play mode, pressing
this button will repeat only those programmed or
edited.
Pressing the “repeat” button a second time, will can-
cel the repeat function.
5. A-PAUSE (AUTO PAUSE) Button
Pressing this button will cause the machine to activa te
PAUSE automatically at the end of any currently pla y-
ing track. To resume play, press the PLAY buttor1.
While the auto pause function is activated, A-PAUSE
will show in the display.
6. STOP (reset) Button (Ml)
One press of this button will stop playback and retuusn
the pick-up to the beginning of the disc. A secomd
push will clear (reset) all memory contents.
NOTE: The total number of tracks and the total pla y-
ing time on the disc will always show onthe
display in the STOP mode.

DZ-112
7. PAUSE Button ( a )
Press
this
button
to
temporarily
cease
playback
or
to
cue
up
a
track
or
segment
for
recording,
etc.
To
resume
playback,
press
the
“pause”
button
again
or
press
the
play
button.
NOTE:
Fast
Forward/Backward
scan
and
skip
oper-
ations
(items
#9
and
8)
are
still
operable
in
the
“pause”
mode.
8.
FAST
FORWARD/BACKWARD
SCAN
Buttons
(<<,
>>)
When
pressed,
these
buttons
provide
fast
forward
or
backward
scan
within
a
track
(music)
selection.
To
more
than
double
these
scan
speeds,
press
the
“pause”
button
(item
#7)
first.
9.
FORWARD/BACKWARD
SKIP
Buttons
(<
,
>>)
These
buttons
allow
one
to
“skip”
forward
or
back-
ward
over
any
track
in
one
track
increments.
Pressing
backward
(<)
once
will
cause
return
to
the
beginning
of
the
current
track;
a
second
immediate
push
will
cause
a
skip
back
to
the
preceding
track.
When
the
pick-up
comes
to
the
first
selection,
the
next
push
will
cause
it
to
go
to
the
beginning
of
the
last
selection
on
the
disc.
Pressing
forward
(»»)
will
cause
the
player
to
skip
forward,
one
track
at
a
time
for
each
successive
push.
When
the
last
selection
is
reached,
the
next
push
will
return
the
pick-up
to
the
first
track.
10. PLAY Button { > }
Press
PLAY
button
when
loading
a
disc
for
immediate
playback
beginning
at
track
1
and
for
starting
a
pro-
grammed
sequence.
11, A-SCAN (AUTO SCAN) Button
Press
this
button
to
successively
play
a
beginning
of
each
track
for
ten
seconds.
During
the
auto
scanning
mode,
the
A-SCAN
indicator
will
appear
on
the
dis-
play.
12. RANDOM Button
Press
this
button
to
automatically
play
tracks
at
ran-
dom.
During
the
random
play,
the
RANDOM
indicator
will
appear
on
the
display.
CONTROLS
&
SWITCHES
—
FRONT
PANEL
13. PHONES Jack
Use
the
“phones”
jack
to
connect
stereo
headphones
for
private
listening.
14. VOLUME UP/DOWN Buttons
Controls
volume
level
of
connected
stereo
head-
phones
and
the
VARIABLE
ANALOG
OUTput
jacks
on
the
rear
panel.
When
activated,
the
output
level,
as
measured
in
db
below
maximum
output,
is
shown
in
the
display.
15. FADE-OUT Button
Use
this
button
to
gradually
decrease
the
output
level
of
the
VARIABLE
ANALOG
OUTput
jacks
on
the
rear
panel
and
the
phones
jack.
When
the
fade-out
com-
pletes,
the
unit
enters
the
pause
mode
and
the
output
level
automatically
returns
to
the
original
level.
16.
T-FADE
OUT
(Time
Fade
Out)
Button
Use
this
button
to
gradually
decrease
the
output
level
of
the
VARIABLE
ANALOG
OUTput
jacks
on
the
rear
panel
and
the
phones
jack
after
a
length
of
play
time
as
specified
by
the
Direct
Access
select
buttons.
When
the
fade-out
completes,
the
unit
will
enter
the
pause
mode
and
the
output
level
automatically
returns
to
the
original
level.
17. DISPLAY ADJUST Button/Indicator
This
button
adjusts
brightness
of
the
display
in
four
steps
and
also
turns
the
display
off.
The
red
indicator
lights
up
and
stays
lit
in
the
3
dimmed
positions
andin
the
display
“off”
position.
18. T-DISPLAY Button
Each
push
of
this
button
selects
one
of
4
disc
tinning
displays
as
follows:
“Single
Elapsed”
—
Time
elapsed
since
beginning
of
current
track.
“Single
Remain”
—
Play
time
remaining
on
current
track.
“Total
Elapsed”
—
Time
elapsed
since
beginning
of
total disc.
“Total
Remain”
—
Play
time
remaining
on
entire
disc.

DZ-112
CONTROLS & SWITCHES — FRONT PANEL
NOTE: When in program play mode, the remaining
times displayed will be that of the selections
programmed, not the entire disc.
In the RANDOM play mode, the display will not
show Total Elapsed or Total Remain times.
(This is not a malfunction.)
19. OPEN/CLOSE Button
Press to open or close the disc tray (See also item #2).
20. REMOTE SENSOR
When using the hand held remote control, it must be
pointed toward this sensor to activate operational
functions.
21. DIRECT ACCESS SELECT Buttons
Use for immediate play of any track from 1 to 99 or, in
conjunction with the “program” button, select up to 32
tracks in any order for programmed operation.
Also, use these buttons for the edit play and time sett-
ing for the Time Fade Out function.
22. EDIT Button
For convenience in tape recording, this button will
cause automatic grouping of tracks that can be
recorded within the time specified for any given tape
type used (C-60, C-90, etc.). That is, when recording
time for one side of the tape is set with the Direct
Access Select buttons while the EDIT is blinking on the
display after the Edit button is pressed, the tracks that
can be recorded for both sides of the tape within the
specified time are programmed automatically.
23. M-CHECK Button
Use this button to check the order of the selections
that have been programmed. With each successive
push of this button, the track numbers that have been
programmed will be shown to the left and the pro-
grammed order to the right, in the track display area
(the time portion of the display will turn off).
NOTE: M-Check operates only in the “Stop” mode.
24. CLEAR Button
This function allows track by track clearing, in sequ-
ence, of any programmed track, beginning with the
last track programmed. With each push of this button,
the next track to be cleared will appear in the Track
No. Display and the red frame around the last
programmed track No. will disappear.
NOTE: “Clear” operates only in the “Stop” mode.
25. PROGRAM Button
Use this button in conjunction with the “Direct Access
Select” buttons (item #21) to program up to 32 track
selections in any random order. To clear program
contents, press the STOP button twice.
NOTE: Pressing the program button will toggle
between the selections programmed into
memory and normal play operation. This
allows one to temporarily go to normal play
operation, if desired, without losing the stored
program. To recover the program, simply
press program again!

JACKS
&
TERMINALS
—
REAR
PANEL
26.
ANALOG
OUTPUT
Jacks
(Fixed)
For
connection
to
the
CD
inputs
of
any
amplifier
or
receiver.
The
output
level
is
2
voits
fixed,
referenced
to
0
dB
recording
level.
27.
ANALOG
OUTPUT
Jacks
(Variable)
For
connection
to
the
CD
inputs
of
any
amplifier
or
receiver.
The
output
level
can
be
adjusted
using
the
VOLUME
UP/DOWN
buttons.
28. DIGITAL OUTPUT Jack — Coaxial
Use
this
output
for
connection
to
a
matching
amplifier
having
a
patch
cord
(coaxial)
phono
jack
type
digital
input
(such
as
the
Luxman
LV-113
or
LV-117).
29. SERIAL REMOTE IN/OUT Jacks
Use these jacks for simple and convenient connection
to
other
Luxman
components
for
System
Remote
Control
operation.
Connect
these
Serial
Remote
In
and
Out
jacks
to
the
Serial
Remote
Out and
In
jacks,
respectively, on other Luxman components {in daisy
chain fashion), for a unified remote control system.
NOTE: Turn the power off before connecting these
jacks.
30. AC POWER CORD
Insert
the
polarized
AC
plug
of
the
DZ-112
into
any
120
volt
AC/60
Hz
wall
outlet,
or,
preferably,
into
the
unswitched
outlet
of
the
amplifier
or
receiver
used
with
it.

CONTROLS
&
SWITCHES
—
REMOTE
CONTROLLER
LUXMAN
REMOTE CONTROL UNIT RO-t05u
REMOTE CONTROLLER RD-105u
NOTE: Operation is the same as for the buttons on
the front panel of the 02-112.
31.
TRANSMISSION
WINDOW
41.
M-CHECK
Button
32.
DIRECT
ACCESS
(TRACK)
Buttons
42.
EDIT
Button
33.
CLEAR
Button
43.
A-SCAN
Button
34.
PROGRAM
Button
44.
RANDOM
Button
35.
A-PAUSE
Button
45.
TIME
DISPLAY
Button
36. REPEAT Button 46. DISPLAY ADJUST Button
37. FORWARD/BACKWARD SKIP Buttons 47. STOP Button
38. PAUSE Button 48. OPEN/CLOSE (TRAY) Button
39. PLAY Button 49. T-FADE OUT Button
40. VOLUME UP/DOWN Buttons 50. FADE OUT Button
DZ-112

DZ-112
Disassembly Instructions
Disc Tray
1. Removal of CD Mechanism
(1) After removal of the top cover, open the disc tray.
(2) Remove the panel tray in the arrow direction as
shown in Figure 1.
(3) Remove three screws marked ” ©” as shown in
Figure 2.
(4) Disconnect all wires from the CD Mechanism.
Panel Tray
Figure 1
Main P. C. Board
CD Mechanism P. C. Board Support (2¥ 1)
Figure 2
2. Removal of Front Panel and Logic//Fader/
Phone P. C. Board
= Front Panel
(1)
After
removal
of
Front
Panel,
remove
six
screws
Hooks
marked
"<”
as
shown
in
Figure
3.
(2) Remove six hooks as shown in Figure 3.
(3) Disconnect a connector from the Logic P. C, Board.
Hacks Figure 3
3. Removal of Main P. C. Board
(1) After removal of the top cover, remove three
screws
marked
“A”
as
shown
in
Figure
5.
-
Oa
:
F
ot
A
(2)
Remove
four
P.
C.
Board
supports
(X1)
from
Main
7,
N
ee
F
Push
P.
C.
Board
\
P.
C.
Board
as
shown
in
Figure
2,
by
pushing
the
/
4
;
ann
ane
SupportGX
1)
\Q
point
“A”
as
shown
in
Figure
4.
/
’
(3) Disconnect all connectors from Main P. C. Board.
Bottom /
a Chassis
Cover Rear \N
Main /
P. C. Board
a”
Figure 4
Figure 5

Adjustment Procedures
(1) Connection Diagrams
DC Voltmeter
Q—
Test CD
Set
Figure 6
OQ
Test CD
@Q)—
Test CD
Set
Cc) ) ——>
Test CD
Oscillator
AC Voltmeter
with 2 pointers
Figure 9
DZ-112

| 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