Denon DCD-1500II User manual

DENON _........
SERVICE MANUAL
STEREO CD PLAYER
MODEL DCD- 15001
NIPPON COLUMBIA Co. LTD.

TABLE OF CONTENTS
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SPECIFICATIONS
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NAMES
AND
FUNCTIONS
OF
PARTS
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4,5
NOTE
FOR
HANDLING
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LASER
PICK-UP.......
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6,7
DISASSEMBLY
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8~10
MAINTENANCE
SERVICE
AND
ADJUSTMENT.
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PARIS LIST. OF PW: BOARD occc > bce eee Odie hile epee wate e en hee 18~ 21
EXPLODED VIEW OF FG-610 MECHA UNIT... 00.2... c eect eee ee nee 22
PARTS LIST OF FG-610 MECHANISM UNIT... 00.0.0. 0c cece eee tee eee tenes 23
PARTS LIST OF EXPLODED VIEW ¢.5 oo Nev eoenos sea esGab a duces oda sie es 24
EXPLODED VIEW x ac cance pice ea ea EO Bren wet we RS < 25
PW: BOARD oid case Poke ad pals Bo GRO eo ae ae ae TE ae 26, 27
WIRING
DIAGRAM
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28
SCHEMATIC
DIAGRAM:
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29
SEMICONDUCTORS
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FEATURES
The
DCD-1500I
compact
laser
disc
player
utilizes
a
unique
DENON
Super
Linear
Converter
which
prevents
deterioration
of
sound
quality
in
the
PCM
playback
system,
assuring
accurate
reproduction
of
sound
record
on
compact
laser
discs,
in
the
studio
or
in
live
sound
production
areas.
The
parts
for
this
high
performance
.
disc
player
have
been
selected
with
careful
discrimination,
to
produce
high
quality,
realistic
playback
of
the
full
musical
production.

SPECIFICATIONS
AUDIO
No. of channels:
Frequency response:
Dynamic range:
Signal-to-noise ratio:
Harmonic distortion:
Separation:
Wow and flutter:
Output voltage:
DISCS
GENERAL CHARACTERISTICS
Power supply:
Power consumption:
Dimensions:
Weight:
FUNCTIONS AND DISPLAY
Functions:
Display:
Other functions:
REMOTE CONTROL UNIT
Remote control system:
Power supply:
External dimensions:
Weight:
ACCESSOIRES
ee
=
2 channels
2 ~ 20,000 Hz
96 dB
103 dB
0.003% (1 kHz)
100 dB (1 kHz)
Less than the measuring limit (+0.001% W. peak)
Fixed: 2.0V
Variable: Max. 2.0V
Audio compact discs are used.
50/60 Hz, Voltage is shown; on rating label
17W
434 (17.1 in) X x 107 (4.2 in) H x 324 (12.8 in) D mm e
9.3 kg
Direct selection, automatic search, programmed selection, repeat playback,
manual search, auto space, time mode, call, auto edit.
Track number, index number, time, program, and direct, etc.
Headphone Jack (Variable level) Digital out ON/OFF Switch.
RC-202 —
Infrared pulse system
’ 3V DC Two SUM-3 (standard size AA) dry cell batteries
62 (2.4 in) W x 162 (6.4 in) H x 18 (0.7 in) D mm
120 g (Includes batteries)
Connecting pin cord, Mini screwdriver
* Design and specifications are subject to change without notice in the course of product improvement.
VAROITUS: SUOJAKOTELOA El SAA AVATA. LAITE SISALTAA LASER-DIODIN, JOKA
LAHETTAA NAKYMATONTA SILMALLE VAARALLISTA LASER-SATEILYA.
ADVARSEL: USYNLIG LASERSTRALING VED ABNING NAR
SIKKERHEDSAFBRYDERE EU UDE AF FUNKTION.
UNDGA UDSAETTELSE FOR STRALING.
“CLASS |! LASER PRODUCT”
“CLASS 1
LASER PRODUCT”

CAUTION
SE WF CET See
sens orn
@ Power Switch (POWER)
e Press this switch to turn the power source ON. -
e@ After the power is turned on, the Variable Output level is
displayed in the S (sec) portion of the display window, then
the Track No. (QQ) lights up. If no disc is loaded, all
number indicators and the calendar light up after several
seconds. If a disc has been loaded, the number of tracks on
the disc wil! be displayed in the Track No. display after a
few seconds, and the total time will be displayed by the
Time display. The Calendar display wiil stay on until the
total number of tracks is displayed, (but will indicate
OVER]if there are more than 21 tracks on the disc). It will
go off when playing starts.
2) Diet Holder
The disc is loaded into the disc holder for play.
e The disc holder is opened and closed by pressing the disc
holder open/close button ( 4 OPEN/CLOSE) @.
® It can also be closed by pressing the play button ( P~
PLAY) @® or pause button ( Il PAUSE) @®.
@ Disc Holder Open/Close Button ( 4 OPEN/CLOSE)
e@ The disc holder C2] is opened and closed by pressing this
button.
@ Press the button once to eject the disc holder (2) forward.
Press it again to close the holder.
@ If the disc holder is closed and a disc has been loaded, the
disc is rotated for several seconds, and then the total num-
ber of tracks on the disc and the total playback time are
then displayed on the digital display @.
4) Display
e@ The display area consists of sections for the track number,
the index, the playback time, and the calendar.
Direct Remote control
indicator sensor indicator
Emphasis
indicator
Pause indicator
Playback Remainder of
indicator Current track
indicator
@REMOTE SEARCH
EMPHASIS @§ [PAUSE]
DIRECT »(CPLAY7 u a
INDEX
aa ann
Geo okt
Program Total remaining
indicator indicator \ time indicator
Calendar
Recorded track overflow Autospace Repeat between
indicator (for discs with indicator A and B indicator
21 or more track numbers}
Remote Control Photosensitive Window
This window receives the light transmitted from the wire-
less remote control unit.
The RC-202 wireless remote control unit should be operat-
ed while it is pointed in the direction of the photosensitive
window.
When the remote control is operated, the remote control
sensor indicator lamp will light in the display area
Auto Edit Button (AUTO EDIT)
This automatic programming function devided the compatt™
disc, which is recorded on only one side, into two halves, to
resemble side A and B of an ordinary analog disc. Total
playing time is divided at the break between tracks which is
nearest to the 1/2 point. The break is made at the beginning
of the track to avoid interrupting the trackduring playback.
Pressing this button when the player is stopped causes the
playback time for the first half of the disc to be displayed
for approximately 2 seconds in the TIME display, along
with the numbers of the tracks on that side, displayed in
the CALENDAR display. Next, the content of the second
half of the disc is displayed in the same way.
The player then moves automatically to the start of the
initial track and remains there in the pause state. Play is
started by pressing either the Play (PLAY) or the Pause
(PAUSE) button. When playing of the first half of the disc
is ended, the player pauses automatically at the start of
the first track of the second half.
This function operates only when a disc with 20 or fewer
tracks is played.
AuTe SPACE Button (AUTO SPACE)
Pressing this button will cause the [AUTO SPACE] indicator
to light up and a blank portion tasting 4 or more seconds to
be inserted between the tracks. If this button is pressed
while the [AUTO SPACE] indicator is lit, the lamp will go off
and the auto space function will be cancelled.
When the AUTOMATIC SEARCH button (Kd, PPI) is
pressed, the auto space function will not operate.
The auto space function will operate with Programmed
playback as wel! as normal playback.
Although a blank interval is inserted between tracks when
the Auto Space function is operating, the 4-second interval
is not added to the time remaining display or to the time
display during Auto Edit.
Time Mode Button (TIME)
This button is used to select the type of information to be
read out under the TIME section of the display. Either the
elapsed playback time of the current track, the remaining
playback time for that track, or the playback time for the

remaining tracks on the disc can be selected.
Normaily the elapsed playback time of the current track is
displayed. If the button is pressed once, the in-
dicator lights and the remaining time left to play on the
track is displayed. If the button is pressed again, the
SINGLE | indicator goes out, and the [TOTAL | indicator
goes on, and the playback time for the remaining tracks left
on the disc is displayed. If the button is pressed once more,
the TOTAL | indicator goes out and the display returns
to the elapsed playback time for that track.
If the button is pressed so that the LTOTAL Jindicator lights
during programmed playback, the playback time for all of
the remaining programmed tracks is displayed.
All Button (ALL)
e@ Press this button to repeat playback.
@ When the [ALL] button is pressed, the [REPEAT ] indicator
lights and repeated playback is performed for all of the
tracks on the disc. During programmed playback, all of the
tracks programmed into memory are played repeatedly.
Press the [REPEAT | button again to cancel the repeat
operation.
One Track Repeat Button (1)
@ Press this button when desiring to replay 1 track only.
Pressing this button while a track is playing will cause the
player to replay that track only. (Refer to page 8).
A-B Repeat Button (A — B)
@ Press this button to perform repeated playback of a desired
section between two specified points. (Refer to page 8 for
details.)
Index Button (INDEX)
e@ Press this button when playing from the index within the
tracks. Specify the index No. from the ten key pad.
Clear Button (CLEAR)
e Use this key to make corrections in the programmed tracks.
Call Button (CALL)
@ Press this button to verify the track numbers that have been
programmed into memory.
Program and Direct Button (PROG/DIRECT)
@ Press this button to select the memory program function or
direct track selection function.
+10 Button (+10)
@ Press this button to select a track number that is larger than
11.
e@ The +10 button is used in conjunction with the ten-key pad
@. For example, to select track number 15, press the
button and then{S]on the ten-key pad.
@ Similarly, to select track number 32, press [+10] , [+10],
+10] and then press [2].
Ten key red (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
These buttons are pressed for direct track selection or to
Program a selection into memory. For example, to play
back the third track using the direct selection function,
press [3] on the key pad. Track number 3 will then start to
play. To play track number 12, press [+10] and then :
@ To use the keypad in program mode, first press the (PROG/
DIRECT) button @® to enter the correct mode.
Play Button ( » PLAY)
e Press this button to play a disc.
@ When the PLAY button is pressed, the [PLAY] indicator
lights, and the number of the track being played, the index
number, and the elapsed playback time for that track are
displayed. The calendar lights to display the all of the
playback tracks. The displayed tracks then go out in order
as each finishes playing.
@ When playback of the last track has finished, the
indicator goes out, and the machine enters stop state.
@ It is also possible to use the PLAY button to close the disc
holder after a disc has been inserted. Playback then begins.
@® pene Button ( Il PAUSE)
Press this button to stop the playback temporarily.
e If the PAUSE button is pressed during playback, the play is
stopped temporarily, the [PBPLAY] indicator goes out, and
the [LILPAUSE indicatortinhdiae- -
e To end the pause, push the PLAY button @® or PAUSE
button ® again.
@® Stop Button (HM STOP)
@ Press this button to stop the playback.
@ The rotation of the disc stops, and the total number of
tracks and the total playback time are read out on the
TRACK NO, and TIME sections of the display.
@ During programmed playback, the total number of tracks
programmed in memory and the total programmed per-
formance time are displayed.
@ Automatic Search Reverse Button ( Kd )
@ Press this button to move the pickup backward, to return
to the beginning of the desired track.
e If this button is pressed during playback or pause, the pick-
up moves back ward to the beginning of the track that
corresponds to the number of times the button was pressed.
@ Automatic Search Forward Button ( >>I )
@ Press this button to move the pickup forward and advance
to the beginning of the desired track.
e
If
this
button
is
pressed
during
playback
or
pause,
the
Pick-
up
moves
forward
to
the
beginning
of
the
track
that
corres:
ponds
to
the
number
of
times
the
button
was
pressed.
@
Manual
Search
Reverse
Button
(
<4
)
© Press this button to move playback in fast reverse.
@
When
the
machine
is
in
play,
sound
will
be
produced
during
the
time
that
the
button
is
being
pressed
and
the
fast
re-
verse
is
operating.
e If the button is pressed while-the machine is in the Pause
state, the fast reverse will operate three times faster than
the reverse speed when the machine is in the play state. ~
No sound will be produced.
@)
Manual
Search
Forward
Button
(
>>
)
@ Press this button to move playback in fast forward.
@ Whe the machine is in play, sound will be produced during
the time that the button is being pressed and the fast for-
ward is operating.
e
lf
the
button
is
pressed
while
the
machine
is
in
the
Pause
state,
the
fast
forward
will
operate
three
times
faster
than
the
fast
forward
speed
when
the
machine
is
in
the
play
state.
No
sound
will
be
produced.
@ Headphone Jack (PHONES)
@
When
using
headphones,
please
listen
to
them
at
an
appro-
priate
volume.
(Headphones
are
sold
separately.)
@® Volume adjustment knob
e@
This
knob
is
used
to
adjust
the
output
level
(volume)
of
the
headphone
jack.
@
Digital
Output
Switch
(DIGITAL
OUTPUT)
©
Use
this
switch
to
turn
the
digital
output
terminal
signal
on
and
off.
©
The
digital
signal
is
not
output
when
this
switch
is
off.
@) Output terminal (FIX-VARIABLE)
@
Connect
the
output
terminal
to
the
input
terminal
of
the
amp.
(Refer
to
page
6
for
details
on
connections.)
@®
Digital
Output
Terminal
(DIGITAL
OUTPUT-
COAXIAL)
@ This terminal outputs digital data.
@
Digital
Output
Terminal
(DIGITAL
OUTPUT-
OPTICAL)
This terminal output data as fight.
Optical fiber cord used: Tos-Link types TOCP155 or
TOCP172. Z
Caution: Optical fiber cord is sold separately.

NOTE
FOR
HANDLING
OF
LASER
PICK-UP
@
NAMES
OF
PARTS
e
NAME
PLATE
==:
.
oe
+Z-axis
Direction
—_
Z-axis Cover KSS-I5IA
Object Lens
; OOOO0O0
Slide Base
© C00:
Year (last figure)
Day Month Quality Control No.
LotNo. CO O OO O
OP
Unit
:
Note:
Month
indication
X,
Y,
Z
signify
10,
11,12.
lo
Nameplate
Z-axis
P
O
O
O
O
Y-axis Controf Letter | 1 Figure 1st Decimal Place
¢ by the Plant
(Tangentia} Direction)
10 Figures
X-axis (Radial Direction)
Indication unit is mA omitted a decimal point.
@ CONNECTION DIAGRAM OF CONECTOR (1)
KSS 151A Accessory flexible wire terminals.
:
Soldered
Short
Circuit
Portion
(A)
A
a
@ CONNECTION DIAGRAM OF CONECTOR (2)
KSS-151A > TERMINAL P.W.B > MAIN P.W.B
2U-1461
TERMINAL PW.B
2U-1454
MAIN
PW.B
I
Soldered Short Circuit Portion (A)
\}
Note:
The
soldered
connecting
portion
must
be
bridged
“So
when removing CC102.

eee eee ea
Cautions for Handling the Laser Pick-up
The laser pick-up KSS-151A is assembled and precisely
adjusted using a sophisticated manufacturing process in our
plant. Do not disassemble or attempt to readjust it. Please
keep the following instructions carefully in handling pick-
up.
1. General Care
(1) Storage
Do not store the pick-up in dusty, high-temperatured
or high-humidity environments.
(2) Please take care for preventing from shock by falling
down or careless handling.
2. Laser Diode (LD)
(1) Protect your eyes
The laser beam may damage the human eye, since the
intensity of the focused spot may reach 1.3 x 10* W/
cm? even if the intensity at the object lens is 400 UW
maximum, As the light beam spreads after focused
through the objective lens, it does not effect you in the
place as far as more than 30cms. However, do not
look at the laser light beam either through the
objective lens directly nor another lens or a mirror,
(2) Poison of As
Since the LD chip contains As (Arsenic), as GaAs +
GaAlAs, as known as the poison, although the poison
is relatively weak, in comparing. with others, e.g.
As,03, AsCl3 etc., and the amount is small, avoid
putting the chip in acid or an alkali solution, heating it
over 200°C or putting it into your mouth... ..
(3) Avoid surge current or electrostatic discharge
The LD may be damaged or deteriorated by it’s own
strong light if a large current is supplied to it, even if
only a short pulse. —
-Make sure that there is no surge current in the LD
driving circuit by switches or else. Be careful to handle
pick-up as it may be damaged in a moment by human
electrostaic discharge. The pins of the LD are short-
circuited by solder for protection during shipment
(Soldered short circuit portion (A)].
For safety handling of an LD, grounding the human
body, measuring equipments and jig is strongly recom-
mended, And still it is further desirable to make use of
mat on the platform and floor for handling the LD.
To open the short circuit, remove the soldering quickly
with a soldering iron whose metal part is grounded.
The temperature of the soldering iron should be less
than 320°C (30W).
'\ 3, X-axis Actuator
(1) The performance of the actuator may be effected if
magnetic material is located nearby, since the actuator
has a strong magnetic circuit. Do not permit dust to
enter through the clearance of the cover.
(2) Cleaning the lens
It may change the specifications when dust or dirt is
stuck on the object lens.
For cleaning, use a dry_tense¥@aning paper applying
no excessive pressure to the lens. If it is difficult to re-
move it, moisten the paper with a little amount of
water. At this time never drip water other than the lens
portion.
4. The Metal Bearing
The metal bearing of Cu-compound sintered alloy is im-
pregnated with oil. However, supply oi! with the specified
oil Froil 0147P, at the pick-up replacing time. You do not
normally need lublicate the bushing in initializing time nor
supplying oil in running time.
5. Handling
Please handle the laser pick-up with holding by optical
base.
When either a part of human body or some other things
may happen to touch directly with the circuit part of either
the LD or PD PCB, it may cause deterioration, take careful
attention in handling this base.
6. Deterioration of Laser Pick-up
When difficulty occurs either in focus or tracking adjust-
ment nor able to adjust the focus or tracking, it seems that
the laser pick-up is deteriorated. In these cases, check a
value of laser diode current and give a decision for
deterioration.
7. Fundamental Deterioration Decision of Laser Pick-up
(1) If a voltage value across Pin @) of TP102 (+5V) and
Pin @ (iop) of Unit (2U-1454) is V1, the value of laser
diode current “‘iop 1’’ can be found a formula
iop it
(2) If a “iop” exceeds +10% compared with the IOP indi-
cation on the laser pick-up mameplate, there is a fair
chance for deterioration when it is checked under a
circumambient temperature 23°C.
(3) When the circumambient temperature changes +10°C,
“iop 1” will change 5%. The “‘iop 1°’ will also be
changed the passage of time.
(4) In case of the above conditions taking into considera-
tion and performed the adjustment in proper way, if
the HF level across pin (1) and across (HF) GND of
TP102 in 2U-1454 becomes 0.6V or less values; or a _
gitter occurs great, the laser pick-up is may be
deteriorated.

DISASSEMBLY
Top
Cove
4
anne
oe
e
Top
Cover
me
D
h
Slanty
U
d
1. Remove 4 screws on upper side of the Top Cover. ae ica
2. Pull the Top Cover slantwise upward with opening the
bottom parts slithgly right and left.
pen the lower part
right and left.
(Caution in assembling Top Cover)
1. Couple the hook in the center position of the Top Cover
with the notch part of Front Panel.
Top Cover
{
1
{
i
Front Panel
i
i
1
|
i
i
i
1
i
t
i
H
i
5
|
|
|
|
2.
Make
the
setting
as
no
clearance
between
Front
Panel
and
the
Top
Cover
viewing
from
the
upper
side
of the
setting.
Top Cover
| A
Front Panel

e Bottom Cover
1. Remove 9 screws holding the Bottom Cover and detach
; Bottom Cover
the Bottom Cover with the Insulaters attached. (Doubled)
Bottom Cover Holding
4
Screw
3
x
10
1 | NF laguietor
e Insulator and seperating the Double Bottom
Cover
Detach the Bottom Cover, and remove 8 screws securing
the Insulators to take out Insulators and separate
Doubled Bottom Cover,
Note: The hook may break if it is pushed top firmly.
A square hole on the front panel as a stopper to
: insert a G) screwdriver (approx. @6) not coming
into top far.
Insulator securing screw
Bottom Cover
(Doubled)
<a
Insulator
e Front Panel
1. Remove the Top Cover, and unfasten 3 screw (A)on the
upper side. ® ¥
2. Push and release 3 each hooke on the upper and lower af
sides. Then draw out the Front Panel frontward and de- Front Panel
tach it.
Hook

10
FG-610 LASER PICK-UP MECHANISM
How to move the Looder Frame manually
Manually push the lock arm (a) to the rightward and
pull the Loader frontward, then the Loader can be
open/close manually.
Whole body of the Laser Pick-up Mechanism
FG-610
Removing 4 screw makes possible to detach whole
body of the Laser Pick-up Mechanism from the Chassis.
Loader Frame
Remove whole body of the Laser Pick-up Mechanism
FG-610, pull the Loader Frame frontward, lift the
Loader Rail G4) upward and pull it out backward, then
the Loader Frame can be taken out.
Housing Assembly
Remove 4 screw Or = (a)3, and detach the Assembly
composed of Laser Pick-up Magnet, Yoke, Turntable,
and Spindle Motor.
By removing of screw @). the parts for mechanism
floating can be taken down as illustration shows.
When reassembling, remind that the Washer and
H-damper are commonly used, but the Coil Spring and
Collar are provided two types for maintaining equilb-
rium.
4630515 000
COIL SPRING (D)
463 0515 000
433 0484 004
COLLAR (A)
433 0485 003
COLLAR (B)
COIL SPRING (D)
433 0485 003
COLLAR (B)
.463 0514 001
COIL SPRING (C)
Coil spring (D) (used 3 each) is marked in red.
Coil spring (C) (used 3 each) is not marked.
Collar (B) (used 2 each) is made of brass (yellow).
Collar (A) (used 2 each) is made of brass plated with
nickel (white)
Laser Pick-up KSS-151A
(1) Detach the Housing Assembly illustration.
(2) Remove 2 screws @), unsolder 2 portions (8), and
detach the Speed Detection Coil.
(3) Next, remove 2 screws ) unsolder 2 portions (),
and detach the Drive Coil. And pull out the Shaft at
portion (E ), then the Lase Pick-up can be taken out.
Washer
Coil Spring (C), (D)
H-damper
Collar (A), (B)
om,

“|
1
i
i
1
}
H
Hl
MAINTENANCE SERVICE AND ADJUSTMENT
Changing and/or repairing component parts may necessitate
readjustment. The microcomputer employed in this unit
‘contains maintenance service program. All necessary ad-
justment can be made via operation buttons in front nor-
mally used to play the unit.
1. Initializing maintenance service program.
(1) Turn power OFF.
(2) Short-circuit pins (3) and (4) of TP102 in the signal
processing PCB (2U-1454). :
(3) Turn power ON, The service program initializes and
Bi / displays on the track number indicator. 2 figures —
also displays on the time indicator’s second part has no
relation with the service program.
Note) When the service program is initialized, the unit
comes into service use only and does not accept
normal! operation.
2. Button operations during the service mode.
(1) 4 OPEN/CLOSE Button
Opens or Closes the disc holder in the state of disc
rotation being stopped. Note that when the holder is
in operation, all other buttons are inoperative, until the
holder operation completed.
Note) Be sure to remove the short circuit or reconnect the
connector which disconnected to initialize the
service program. Otherwise the Open/Close does
not function correctly.
(2) = STOP Button
Stops the system. Track number indicator displays
{7 |. Push the button when. the servo adjustment
completed, or when redo it.
(3) » PLAY Button
Turns focus servo on and starts the disc. When a
sequential functions ends, the track number indicator
display {j—' . Use it to adjust tracking offset.
(4) IEPAUSE Button =
Turns all functions of focus servo, tracking servo, slide
servo and spindle servo on. When a sequential func-
tions ends, the track number indicator displays an
When the PLAY has already been pushed, turns both
tracking servo and slide servo on.
(5) Other buttons
Other buttons previously not mentioned are for
factory use. Some of the buttons have specific func-
tions like checking IC. Operation of these buttons
could invite incorrect CD player operation. Therefore
never operate buttons which are not previously ex-
plained how to use. If these buttons are accidentally
pushed, turn power off immediately and initialize the
service program again. Also never use remote control-
ler when the service program is in operation.
3. Adjustment
(1) Precaution to the Adjustment:
The super linear convertor employed in this unit re-
quires no adjustment, except a specific case.
(2) Equipment required
1 Dual mode oscilloscope
2 Specific disk for adjustment
3 Audio oscillater
10 Hz ~ 10 kHz, Output: 0 V ~ 3 Vp-p
4 Frequency counter
Readable to over 5 MHz
5 Filter (Network) for measurement
33k
i jaa OUT
11

12
(3) Setup
LF401
FAN VRIO3
:
BW
&
PLL.
[e)
Iclo2 TPIOS
VRIO6
SLIDE OS.
2U-1454
Front Panel Side
Confirm
the
power
is
OFF,
short-circuit
pins
VRIOI
:
+
©
and
(@)
of
TP102.
Then turn
ON
the
power,
=
io Unies
initialize the service program. Confirm the track VRIO4 adiotcack
number indicator displays /, / , then revert the einer
connection
of
connector.
VRIOS
Preset VR101 ~ 106 as per following. ®] 4 o'clock 3) 7 o'clock
Make adjustment in the order of VRIO2
1, PLL 5 Focus offset
2. Slide offset 6 Tracking gain
3 Track offset 7 Tracking offset (Recheck) VRIO6
aN
4
Focus
gain
12
o’clock
(4) PLL
‘) Precaution
®@ Confirm the service program is initialized, and
the disc is not loaded or the disc is stopped.
Front Panel Side
@
Ground
the
test
points
TP104
(ASY)
and
10:1
Probe
TP105
(BW).
Equipment
setup
Connect
test
point
TP202
(PLCK)
terminal
to
the
PLCK
terminal
(4)
frequency
counter
+
side
via
a
10:1
probe
used
for
GND
i
(-)
oscilloscope
and
ground
—
side to
the
GND.
GB)
Adjustment
Frequency
Counter
Adjust VR105 with a screwdriver so that the
frequency counter reads 3.50 MHz. + 10 kHz.
@) After the Adjustment
@ Remove ground from test points TP104 (ASY)
and TP105 (BW).
@ Disconnect frequency counter.

(5) Stide offset
Confirm the STOP mode (indicating [/ /).
a2 Connection of measuring equipment.
4 Connect test point (SLIDE OFFSET) located the _- —==smyscilloscope
side of VR106 to the oscilloscope + side, and
ground - side to the GND.
Ground the input terminal of oscilloscope to con-
firm the base tine. Then select oscilloscope input
mode at DC range, sweep time as 1ms ~ 2ms/div, SLIDE OFFSET Q——————_———_0 +
sensitivity as high (0.02 V ~ 0.05 V/div when 10:1 terminal |
probe is used) to make judging 0.1 V. GND O———_———__,° —
GB) Adjustment
Adjust VR106 so that the waveform becomes OV
+ 0.1 V on the oscilloscope.
(6) Tracking offset
Equipment setup
'
Filter
Oscilloscope
f~
eae
Fae
ay
'
|
|
Pin
(3)
of
TP101
a
TEO*
|
|
|
0.001
|
J
!
|
i
(+)
Pin(S)
of
TP101
(-)
:
GND
I
i
|
PA
te
es
4
*TEO : Tracking Error Out
|
|
;
{
|
st
|
i
i
(2) Push 4 OPEN/CLOSE button to open the holder,
put the disc for adjustment on the tray, and push
the button again to close the holder. When the
service program is initialized, the laser P.U. is set
to
the
optimum
position.
A
a (3) Push P PLAY button to start the disc,
(4) Ground the oscilloscope input terminal to confirm
; the base line, and set the oscilloscope input to DC
range, 0.1 V/div (when 10:1 probe is used), and
sweeping time as 1 ms ~ 2 ms/div.
(©) Adjust VR101 so that the amplitude of A equals B
as per figure on the right.
Base Line

(7) Focus gain
Push Il PAUSE bution.
Equipment setup
a
Filter Oscilloscope
Pin) of TP-101
FEO x
Pin Q) of TP-101 ©
FEL
Pin © of TP-101 0
*FEO: Focus Error Out
FE!: Focus Error In
Frequency Counter
3) Adjustment
@ Set the audio oscillator output to 620 Hz, 1.0
Vp-p (+0.1 V).
@ Select oscilloscope input in X-Y mode so to
observe Lissajous waveform (Select DC range
for both X and Y inputs).
@ Adjust VR102 so that each Lissajous waveform
symmetrizes X and Y axes. (Adjust each input
phase 90°)
Yaxis Y axis
X axis
Correct
waveform
Incorrect
waveform
14
Oscillator
Set to 620Hz, 1Vp-p
X axis

(8) Adjustment of Focus Offset
Adjust it in the same condition as to focus gain in
the state of all the servos are operated by pushing
PAUSE Button except the measuring equip-
ment connections, °
@) Connection of measuring equipment
HF
Pin Q) of TP-102
Test point E
Pin (2) of TP-101
Pin © of TP-101
=a
Oscilloscope
Audio Oscillator
Set to 620Hz, 1.0Vp-p
Frequency Counter
3) Adjustment
@ Set the output of audio oscillator to 620 Hz,
1.0 Vp-p(+0.1V).
@ Select oscilloscope input mode at “ALTER-
NATE” or “CHOPPER” and set it to 50 mV/
div or 20 mV/div (use 10:1 probe).
Observe by setting the sweep time to 0.2 or 0.5
us/div range.
IW
AWS XY va
Adjust
A
portion
for
most
fine
waveform.
@ A waveform to observe in this time called “Eye
Pattern’’.
@ Adjust VR-103 for a minimum jitter amount.
15

(9) Adjustment of Tracking Gain
@
Adjust it in the same condition as to focus gain in
the state of all the servos are operated by pushing
I] PAUSE Button except the measuring equip-
ment connections.
Audio oscillator should be connected while the
servo is in operation.
If the connection is made before servo operation,
causing mis-operation.
If the connection is made in failure, disconnect
oscillator, push stop button ( = STOP) to stop all
operations, and follow the steps from the begin-
ning. Then push the pause button ( j]| PAUSE) to
activate the servo operation again.
Connection of measuring equipment.
Connect all kinds of measuring equipment setting
to each Test Points of TP101 as below figures.
TEOX
Pin @) of TP-101
TEL
Pin © of TP-101 0
GND
Pin ©) of TP-1010
* TEO: Track Error Out
TEI: Track Error In
@) Adjustment
@ Set the output of audio oscillator to 2.1 kHz
3 Vp-p + 0.1 V. :
® Select oscilloscope input at X-Y mode so to ob-
serve Lissajous waveform. (Select DC range
both X and Y inputs.)
@ Adjust VR-104 and obtain Lissajous waveform
symmetric to both X and Y axes. The wave-
form is the same as focus gain adjustment.
Frequency Counter
=a
Oscilloscope
Audio Oscillator
Set to 2.1 kHz, 3Vp-p

(10) Checking of Tracking Offset (Recheck)
@) Check the adjustment performed in the previous
column (6).
@ Push stop button ( ™ STOP) to stop disc re-
volution.
@ Push play button ( » PLAY) and check that
the disc starts to run.
Note: The microcomputer employed in the unit
sometimes does not accept button opera-
tion. If so, push the button again, and con-
firm that the track number indicator dis-
plays “02”.
@ Observe a waveform and check that the height
of upper and lower waveform are even to the
base line. (Reference value: Difference of
height between two is 5% or less.)
@ If the difference is beyond the value, adjust
VR-101.
@) That is all to complete adjustments.
Terminal
@ Push the stop button ( ™ STOP) to stop disc re-
volution, and push open/close button revolu-
tion, and push open/close button (4 OPEN
CLOSE) to open the holder and remove the ad-
justment disc.
e Remote Control IC (LU59001) Terminal Function List
Function
1
2
3
4
5
6
7
8
9
0 —=
Serial Data Output
+5 V
Shift Clock Input
RDY Output
+5 V
455 kHz OSC
455 kHz OSC
-GND Earth
ACL Input
GND
Remote Control Code Input
Input Code for Remote Control out of RM577
System Address GND Earth
System Address GND Earth
System Address GND Earth
System Address GND Earth
System Address +5 V

PARTS LIST OF P.W. BOARD
2U-1454A SERVO & SIG. UNIT
Part
Name
Remarks
Remarks
2S8C1740(R/S)
RN1202 (10k-10k)
RN2202(10k-10k)
SEMICONDUCTOR GROUP
CXA-1081S (S-DIP)
CXA-1082AS (S-DIP)
2730178022
2690025901
2690026900
TR116
TR201
TR202
2620842002
2620843001
2630257001
2630244001
2620522005
2620839002
-2620745002
2620635002
262051 7007
2630298002
2630423000
2620729002
2620593005
2620836005
2620419008
2630360008
2620419008
2620640000
2630257001
2630485006
2620844000
2630467008
2630190003
2630464001
2630272002
‘2630464001
263043 2004
2680063009
3939269003
2720025004
2740065044
2720058013
2740065044
2720058013
2740006002
2720025004
2730178022
2740065044
2720058013
2740006002
2720025004
2730178022
2690025901
18
M5218P
NJM082D
TC-4053BP
HD63A05Y0-C23P
HD74HC42
LU59001
MSL-917RS
LB1240
MS1953B
HD74HCO8P
HD74HCO4P
PCMS56P-J
HD14053BP
NE5532
HD14053BP
MN6632A
M5218P
NJM4556S
SM5807B
HA17812W
NJM79M12A
HA17805W
NJM79M0SA
HA17805W
NJM78LO5A
ICP-F20
PC-817
2SB562(C)
2SD880(Y)/{GR)
2S8834(Y)/(GR)
2SD880(Y)/(GR}
2SB834(Y)/(GR)
2SD468(C)
2SB562(C)
2SC1740(R/S)
2SD880(Y)/(GR)
2SB834(Y)/(GR)
2SD468(C)
2SB562(C)
28C1740(R/S)
RN1202(10k-10k)
TR401~
408
TR409
410
TR501
D101,102
D201
D202~
207
D208,405
p401~
404
D501,502
D503
D504
D505
D506
D507
2730253015
2690026900
2720025004
2760049008
2760049008
2760370007
2760049008
2760236031
2760405008
2760433902
2760224014
2760303003
2760049008
2760433902
RESISTOR GROUP
| 2116064051
2116064006
2116064051
2116064064
2116064022
2110459002
2116064019
2452148000
2452153008
2SC2878(A/B)
RN2202 (10k-10k)
2SB562(C)
1S2076
1S2076
188106
182076
H2Z5C-1
S1WB(A)10
DSM1A2
HZ30-2
HZ6C-2
1$2076
DSM1A2
V06PB203
VO6PB103
VO6PB203
VO6PB102
VO6PB104
V1220025FA103
VO06PB473
RN14K2E360G _
RN14K23560G
20k2B
10k2B
20k2B
1kQB
100kQ2B
10k2B
47k2B
362 %W
562 “AW
CAPACITOR GROUP
2544260061
2551120055
2533617007
2544252037
2544260032
2561121025
2561034018
2551121025
2561034018
2539036006
2533603008
255H21041
CE04W1H3R3M
CQ93M1H272J
CC45SL1H390J
CEO04W1C101M
CEO4W1HR47M
CQ93M1H103J
CF93A1H333J
CQ93M1H103J
CF93A1H333J
CK45=1E104Z
CC45SL1H100D
CQ93M1H153J
3.3uF 50V
0.0027uF 50V
39pF 50V
100uF 16V
0.47uF 50V
0.01uF 50V
0.033uF 50V
0.01uF 50V
0.033uF 50V
0.14F 25V
10pF 50V
0.015uF 50V
@The
carbon
resistors
at
1/4W,
1/6W
are
not
listed
herein.

2561034047
2544260058
2539036006
C122
C123,124
C125~
127
C128
C129
C130,131
C132,133
C151
C154
C155
2551 120068
2533603008
2544260061
2544254019
2533636004
2551121025
2539036006
C156 2561034050
C157 2544254019
C158 2544254006
C159
Cci60
C162
C163
2561034018
2551121067
2533645008
2551 120068
C164 2551121025
C165,166| 2561035059
C167 2544260058
C168 2551120097
C171 2551120000
C172 2561034076
C173 2551121025
C174 2539036006
C175 2544254019
C176 2539036006
C177 2544260045
C178 2551120084
C179 2539036006
C182 2544260045
C183,184 | 2539036006
c191 2533627000
C192 2539036006
2544260029
2590002011
2533635005
2544254022
2533643000
2539036006
201
202
203,204
C205
206,207
c208~
211
C212
c4co
c401
c402
2531027000
2539036006
2534342041
2533627000
C403 2539036006
C404 2533627000
C405,406 | 2544256075
C407,408 | 2544256088
C409,410 | 2554210098
CF93A1H563J
CE04W1H2R2M
CK45=1E104Z
C093M1H332J
CC45SL1H100D
CE04W1H3R3M
CE04W1C220M
CC45SL1H241J
CQ93M1H103J
CK45-1E104Z
CF93A1H683J
CE04W1C220M
CE04W1C100M
CF93A1H333J
CQ93M1H223J
CC45SL1H561J
CQ93M1H332J
CQ93M1H103J
CF93A1H474J
CEQ4W1H2R2M
CQ93M1H562J
CQ93M1H102J
CF93A1H104J
CQ93M1H103J
CK45=1E104Z2
CE04W1C220M
CK45=1E104Z
CE04W1HO10M
| CQ93M1H472J
CK45=1E104Z
CEO04W1H010M
CK45=1E104Z
CC455SL1H101J
CK45=1E104Z
CE04W1HR33M
EECF5R5U104
CC45SL1H221J
CE04W1C330M
CC45SL1H471J
CK45=1E104Z
CK45F1H104Z
CK45=1E104Z
CC45SL1HO50C
CC45SL1H101J
CK45-1E104Z
CC45SL1H101J
CEO4W1E471M
CE04W1E102M
CQ09P1H471J
[aecne | Penne [_tarnene Renee |
0.056.F 50V
2.2uF 50V
O.1uF 25V
0.0033uF 50V
10pF 50V
3.3pF 50V
22yF 16V
240pF 50V
0.014F 50V
0.1pF 25V
0,068nF 50V
22uF 16V
10uF 16V
0.033uF 50V
0.022uF 50V
560pF 50V
0.0033yF 50V
0.01nF 50V
0.47 nF 50V
2.2uF 50V
0.0056uF 50V
0.001yF 50V
0.1pF 50V
0.01 nF 50V
0.1pF 25V
22uF 16V
O.1pF 25V
1uF 50V
0.0047.F 50V
0.1uF 25V
1yF 50V
0.1pF 25V
100pF 50V
0.1pF 25V
0.33uF 50V
220pF 50V
33yF 16V
470pF 50V
0.1 pF 25V
0.1pF 50V
0.1pF 25V
5pF 50V
100pF 50V
0.1pF 25V
100pF 50V
470pF 25V
1000uF 25V
470pF 50V
C411,412
C413,414
C415,416
C417,418
C419,420
C421,422
C423 424
C425 ,426
C427,428
C430~
434
C437,438
C439
C446
C447,448
C449
C450,451
C452
C501 ,502
C503 ,504
C507~
509
C510
C511
C514
c701
“OTHER PARTS GROUP
2551134038
2539036006
2554214049
2554210043
2554214023
2533614000
2544190018
2533615009
2544254048
2539036006
253 1024003
2544256059
2539036006
2533603008
2539036006
2544256020
2539036006
2544190050
2544255005
2544163016
2544180002
2539036006
2544261028
2539036006
CQ92M1H223J
‘CK45=1E104Z
CQ09P1H821J
CQO09P1H152J
CQO09P1H222J
CC45SL1H300J
CE04W1H101=
(AWD)
CC45SL1H330J
CE04W1C101M
CK45-1E104Z
CK45F1H103Z
CEO4W1E221M
CK45=1E104Z
CC45SL1H100D
CK45=1E104Z
CE04W1E330M
CK45=1E104Z
CE04W1H332=
(AWD)
CE04W1C332M
CE04W1C331M
CE04W1J470M
CK45=1E104Z
CE04W1H101M
CK45=1E104Z
0.022uF 50V
0.1uF 25V
820pF 50V
0.0015uF SOV
0.0022uF 50V
30pF 50V
100uF 50V
33pF 50V
100uF 16V
0.1 F 25V
0.01uF 50V
220uF 25V
0.1F 25V
10pF 50V
0.1uF 25V
33uF 25V
0.1F 25V
330uF 50V
3300uF 16V
330uF 16V
47uF 63V
0.1nF 25V
100uF 50V
0.1uF 25V
4178028101
4150307002
4150308001
4170253013
3990036013
3990035001
261003 7005
4990079008
2048209010
2124652002
2124407011
2124388004
3934038006
41220907000
2048242006
2048114024
2350044002
2318060002
HEAT SINK
INSULATING
SHEET
BUSH
RADIATOR
X’TAL
(16.9344MHz)
CST 6.00MT
CSB455E
BX-1407
H/P JACK
ROTARY SW
TACK SWITCH
TACT SWITCH
FIP100M7
EARTH PLATE
1P PIN JACK
4P PIN JACK
-L.P.F. COIL
PULSE TRANS
1C501,502
1C503~505
The carbon resistors at 1/4W, 1/6W are not listed herein.

Part No.
Part Name Remarks
2050190065
2050321083
2050271049
2050271081
2050323036
2050322037
2050271036
2050321038
2050271036
2050271052
2050190094
2050154030
2050271036
2350049007
4140424005
2690052000
2050271036
KU-5862 DIGITAL SIG
2620736008
2620673006
2539036006
20
6P NH CONNECTOR
BASE
8P CONNECTOR
BASE (RED)
AP PH CONNECTOR
BASE
8P PH CONNECTOR
BASE
3P CONNECTOR
BASE (BLK)
3P CONNECTOR
BASE (BLUE)
3P PH CONNECTOR
BASE
3P CONNECTOR
BASE (RED)
3P PH CONNECTOR
BASE
5P PH CONNECTOR
BASE
9P NH CONNECTOR
BASE
3P NH CONNECTOR
BASE
3P PH CONNECTOR
BASE
BEAD INDUCTOR
SHIELD PLATE (A)
TOT x 172
3P PH CONNECTOR
BASE
- PRO. UNIT
CXD1125
HM6116FP-4
CK45=1E1042
E=S