Pioneer LD-V4200 User manual

1
PION
•
•· • •• • · · ·· - · ·· - ... . . . . .. ... ...... «••- - • •• •• •• • • •• -·· · · ·· • •• ••• ... • • • • • • .. • •• • •• •• • •• - • ••• • ••••• • •••• - - • '. . • •• ••••••••• - - . . . . . . .. - ·- · · • • •• • - - • • ·- - · • •• ••• • - - ~-- - · . . . . ...... - - - ·· •• .. • - - • • •• ·- - .. -· • •
CIRCUIT & MECHANISM
DESCRIPTIONS
REPAIR & ADJUSTMENTS
LASERVISION PLAYER
.
ORDER NO.
ARP1260-A
Laser Vision
• This service manual is applicable to the KUC type.
• As to the circuit and mechanism descriptions, please refer to the LD-707 service manual (VRT-060).
• As to the remote control unit (RU-V101 ), please refer to the RU-V101 service manual (ARP1258).
CONTENTS
1. SPECIFICATIONS ...................................................... 2
2. OPERATION OF REMOTE CONTROL UNIT
(OPTION).................................................................... 3
3. PANEL FACILITIES.................................................... 4
4. DISASSEMBLY.......................................................... 6
5. P.C.B. LOCATIONS.................................................... 8
6. OVERALL CONNECTION .DIAGRAM...................... 9
7. SCHEMATIC DIAGRAM AND P.C.B. PATTERNS .. 11
7.1 LSFB, RECB, LMCB, DRVB AND FMPB
ASSEMBLY ........................................................ 11
7.2 PICK-UP AND PREB ASSEMBLY .................... 15
7.3 SRVB (SPDL) AND ' BLMB ASSEMBLY .......... 19
7.4 SRVB (FTS, CONT) ASSEMBLY ...................... 23
7 .5 SRVB (TBC) ASSEMBLY .................................. 27
7.6 DEMB AND RLYB ASSEMBLY ................. ....... 31
. 7.7 PWID, KEYB AND JACK ASSEMBLY ........... 35
8. ELECTRICAL PARTS LIST .................................... .... 39
9. REPLACING THE PICK-UP ....................................... 44
10. MECHANICAL ADJUSTMENTS.............................. 45
11. ELECTRICAL ADJUSTMENTS ................................ 52
12. ICS AND TRANSISTORS ......................................... 58
13. EXPLODED VIEWS AND PARTS LIST ................... 60
13.1 EXTERIOR AND FRONT VIEW ........................ 60
13.2 TOP VIEW .......................................................... 62
13.3 BOTTOM VIEW ................................................. 64
13.4 MECHANISM VIEW .......................................... 66
13.5 PICK-UP VIEW ................................................... 68
•
14. PACKING .................................................................... 70
15. SAFETY INFORMATION ........................................... 71
PIONEER ELECTRONIC CORPORATION 4-1. Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS SERVICE INC. P.O. Box 1760, Long Beach, Ca l ifornia 90B01 U.S.A. TEL: C213J 420-5700
PIONEER ELECTRONIC CEUROPEJ N.V. Keetberg l aan 1, 2740 Beveren, Belgium TEL: 03/775 · 2B · OB
PIONEER ELECTRONICS AUSTRALIA PTV. LTD . 17B-1B4 Boundary Ro 7~ rside. Victoria 3195, Australia
TEL: C03J 590-9911 1
•
. \
\~
Fl © NOV. 1986 Printed in Japan

1. SPECIFICATIONS
1. General
System and Disc specifications .... LaserVision
Videodisc system
*Maximum playing time
12-inch standard play (CAV) disc .... 30
min/side
12 -inch extended play (CLV) disc .... 60
min/side
8-inch standard play (CAV) disc ...... 14
min/side
8-inch extended play (CLV) disc ...... 20
min/side
Spindle motor speed ................................... .
Standard play disc 1800 rpm
Extended play disc 1800-600 rpm
(When 12 -inch disc is used.)
Power requirements ........ AC 120V, 50/60 Hz
Max. power consumption .................... 75 W
Net weight ( without package) ............. 9.2 kg
(20.4 lb)
Dimensions ..... 420(W) x 395(0) x 1 OO(H) mm
16-9/16(W) x 15 - 9/16(0) x 3- 15/16(H) in
- - ·- · - * 6
T
3 95
385
.
420
t
100 Unit: mm
l
Operating temperature ........ + 5°C to + 35°C
Operating humidity ..................... 5% to 90%
(There should be no condensation)
2. Video Output
Level ................................... 1 Vp -p nominal
(75 0 terminated, sync negative)
Terminal ......................................... Pin jack
3. Audio Output
2
Level ................................. 650 mV nominal
(1 kHz 100% modulation, 50 kO terminated)
Terminals ...................................... Pin jacks
Channels ................................. .... 2 Channels
(Selected by a separately sold remote control unit.)
(
..
• •
4. Functions
[Operations provided by player front panel function
keys]
Standard Extended
Function play (CAV) play (CLV)
disc disc
.
PLAY
YES YES
REJECT
YES
YES
SCAN FWD·REV
YES YES
STILL/STEP FWD·REV
YES
NO
DISPLAY ON/OFF
YES YES
[Operations by a separately sold remote control unit]
PLAY
YES YES
REJECT, OPEN
YES YES
STILL/STEP FWD·REV, STILL
YES
NO
MULTl-SPEED FWD· REV
YES
NO
SCAN FWD·REV
YES YES
AUDIO SELECT
YES
YES
VIDEO ON/OFF
YES YES
DISPLAY ON/OFF
YES
YES
START
YES YES
FRAME NUMBER SEARCH
YES
NO
TIME NUMBER SEARCH
NO
YES
CHAPTER NUMBER SEARCH YES* YES*
* Enabled when a disc with recorded chapter numbers is played
back.
[Other Functions]
• CX system ....... Auto selection operation when
a disc with recorded CX auto
selection codes is played back.
5. Other Terminals
• EXT CONT (front panel) .... Stereo miniature
phone jack
• INTERFACE CONNECTOR .............. 15 pin,
D-SUB connector (rear panel)
• EFM OUT (rear panel) .............. ........ 5 pin,
DIN connector
6. Accessories
• 0 perating instructions ............................ 1
NOTE:
The playback time depends on the content of a disc.
Specifications and design subject to possiblemodifications without
notice, due to improvements.

...
...
2. OPERATION OF REMOTE CONTROL UNIT (OPTION)
The RU-V101 Remote Control Unit (separately sold)
can be used with this player. Please contact the dealer
for this player.
EXT CONT Terminal Shape, Function
Shape: 3 pin, stereo miniature phone jack
PREPARATION
Make sure the player is turned off when performing
this.
2
3
1. Set the player front panel switch SW7 to OFF
(4800 bits/second).
2. Connect the RU-V101 Remote Control Unit cable
to the player front panel EXT CONT terminal.
47Q
ED
1m I
I Ic:::1 r
c= c::, c::,
c::a c::i c::i
c::i c::i c:::i
c:::I
c::, == c::,
KEY FUNCTIONS
PAUSE Key
* Do not use the EXT CONT ter -
minal and the rear panel INTER-
FACE CONNECT OR RxD i nput
(p in No. 3, 10) at the same time,
as a signal co nfl ict will occ ur
and di sturb no rmal operation.
* During Key Lock (front panel
KEY LOCK i ndicator is lit), re -
mote contro l input is not ac-
cepted.
Plugging and unplugging
should be performed after
power is turned off .
Pin No.
1
2
3
When this key is pressed, temporary
playback pause occurs.
It can be F< E ..J EC:: T ~ P A USE 11 P I.. AY ►
released by PLAY, SCAN, MU LTl-
SPEED (standard play disc only),
◄ II STll.-. 1.. ST l'.:P
11 ►
STILL/STEP (standard play disc on- - M U I..
Tl • SPE ED +
ly) key operation. A
LJ - V101
R E M O TE
C ON T R OL
*The Pause mode is not released by
UN IT
.. S C AN
....
@PIONEER
•
the
PAUSE
key during
pressing
pause status.
f D IIFUNC
Auo 10 I O F F
I 1:=JI F U NC
AU DIO I C H 1 L
I 2 F
UN C AUDIO f -- C H 2 A
I 3 F
UNC Auo10 I - s TeA e o
I a F U N C VICE □ I - - □ FF
I "
FUNC VID E O I O N
CLEAR Key I a
FU N C I □ 1 s P 1.. AY I
OF F
I , FUN C I DISP LAY I
ON
-
Used for numeral input correction,
I CL E A R I I I
I •
FUN C
search mode release,
stop marker
~~~
release. I I I I I I
SPEED Of"'EN
~~~
I I I I I I
- -
STOPM START
DIGIT (0- 9) Keys 1 2 3
I I L I
~
DISP L AY
.
...
0 -
I I C I
=
CR
SEARCH Key, T IM E g
I I I I
FRAME Key, I I
A B C
I
TIME Key,
l~a.111.6'
e
.... .., ........
., ... ... ..,_
CHAPTER Key
Used for search operation.
IPlayer side I
2
1
3
1
Remote control
plug
Terminal 1/0 Fun
ction
GND -Ground
RxD I
nput
Serial command input
+VC
Output
Power supply output + 5 V,
47 0 series resistance
(Cannot be used for any
. purpose
other than as the
remote control unit power
supply.)
REJECT Key,
PLAY Key,
STILL/STEP Key,
SCAN Key
Same function as those of each key
on the front panel.
-
MUL Tl -SPEED Key
Functions only during standard play
(CAV) disc playback. When the
+
side is pressed,
forward direction
playback starts, and when the -
side • pressed,
direction
IS reverse
playback starts.
When power is supplied, it is set to
normal speed. See
Function
Key
Operation for speed selection.
*During multi-speed playback, there
is no audio output.
FUNC Key
Used when the function
indicated
below each key is used.
3

3. PANEL FACILITIES
FRONT PANEL
Power Switch and Indicator
Press to turn the power supply on/off. When power
is turned on, an indicator is lit.
* If the power has been turned off, wait several
seconds before turning it on again.
t-- -- -11-, -- 0
F>O\NER
CD
® PIONEER LASERVts1 □N PLAYER u: ::i- v a20 0
Function Switch Cover
Internal function switches are provided to select
player operation modes and interface initialization
in addition to a meter that displays the cumulative
operating time.
-
EXT CONT Terminal (Stereo miniature phone
jack}
A terminal for connecting a separately sold remote
control unit RU-V101 .
KEY LOCK Indicator
Lit when the KEY LOCK command is entered from
the external control unit.
When this indicator is lit, entries are not accepted
from op·eration keys other than the power switch.
Also, entries are not accepted from the operation
keys of the separately sold remote control unit.
4
AUDIO Indicator
Indicates audio channel output.
MODE Indicator
• PARK -Indicates that the pickup is at the park
position (extreme disc internal cir-
cumference) and has a standby status.
• PLAV - Lit during playback.
• SEARCH - Lit during search execution.
AUOIO
@] @]
I I
1 L 2 Fl i~ .:u:~i,,; ., IL. Av St. Ai -et .•• '
e x SYS T EM c::E
t<EV LOCt< STIL L STEP 1 1•
<lll Ill>
PLAY DD .
D <l SCAN[> ! I
Df □ Ogv
F U NCT I ON
EXT C::: □ NT
DISPLAY Key
Press to display a chapter number and frame
number (standard play disc) or time number (ex-
tended pJay disc). Press it once again to turn off
the display. (Display is maintained until the key is
pressed again.)
Chapter (Standard play,
extended play disc)
Indicates disc program
punctuation. Equivalent to
a ''Chapter'' No:in a book.
If the disc is not equipped with
chapter number recording, noth-
ing will appear when the DISPLAY
key is pressed.
Frame (Standard play disc)
Serial number for each
screen starting from the be-
ginning of a disc program.
Equivalent to a ''page'' in
a book.
Time (Extended play disc)
Standard play disc
02 12000
I I
LFrame
'--- Chapter
Extended play disc
0 I 0 : I 2. 23
Lsecond
--Minute
--- -Hour
Chapter
During disc playback in the play mode, displays the
elapsed time from the beginning of a disc.
If there is no second recording on the disc, the second display
will indicate ''00''.

-
..
I
I I <J SC A N C>
. --'-
I I I --+- . ~--
FU N CT IO N
EX T OON 'T" A ~ EJE CT
@ II I II
CJ
' •
I
I I
, -
REJECT Key
When this key is pressed while the ''PARK'' mode
indicator is lit, the disc table comes out to a pre-
scribed position. Also, when this key is pressed dur-
ing playback, playback is suspended to stop disc
rotation.
When it is pressed twice during playback, disc rota-
tion stops and the disc table comes. out.
REAR PANEL
EFM OUT Terminal
Outputs EFM signals.
~
\I
~ ~~~~~~~ ~ ~~~
I INT ERFA CE I
11
ITT
- OU T
1 C ONNE C TOR J
1.2 '.!.J
AUOIO
2/R
"'
--
ur
VI OE O
@ft,OO?nOOO?_\\ ©
!~
@@@
000 00
~
.....
-
I
-
INTERFACE CONNECTOR (D-SUB 15 pin)
Used for serial interface connection to a computer
or controller.
PLAY Key
Used to start playback or to return to ordinary
playback from still image or pause.
STILL/STEP Keys
Effective only during standard play disc playback.
After one of the following keys is pressed, still im-
age playback occurs. After this, when one of these
keys is pressed, the following occurs.
11 ► : Step forward
◄ 11 : Step reverse
SCAN Keys
Function only when one of the following keys is
pressed.
► : Forward direction
◄: Reverse direction
OUTPUT Terminals
• VIDEO: For connection to a color monitor.
• AUDIO: For connection to a stereo amplifier.
~
~~~~~ ~ ~ ~
,,....
,-
I
-
Power Cord
5

4. DISASSEMBLY
•
Front panel
Disc tab le
Mechanism assembly
0
6
Lock roller
---®
Bonnet
e
e
SRVB assembly
Bottom assembly

•
-
,.
[Bonnet]
1. Remove the 2 screws O from the sides.
2. Remove the 2 screws 8 from the back.
[Bottom Plate]
1. Remove the 2 screws C,.
2. Remove the 4 screws O.
[Disc Table]
1. Remove the bonnet.
2. Turn on the Power Switch, press the key to remove disc
to open the disc table.
3. Remove the 2 rivets C,.
Note:
1) Remove the lock roller to prevent its loss.
2) To pull out the disc table without pressing the key, remove
the bottom plate and turn the pulley connected by a belt to
the loading motor 20 turns.
[Front Panel]
1. Remove the bonnet.
2. Remove the 2 screws • and screw 0
3. Disconnect the KEYB assembly connectors CN28 and CN45.
[Mechanical Section]
1. Remove the bottom plate.
2. Remove the 4 mounting screws O of the SRVB assembly
and disengage the 3 tabs supporting the SRVB assembly.
3. Disconnect the CN2, CN14, CN24, CN33 and CN37 con-
nectors of the PREB assembly, the CNS connector of the
BLMB assembly and the CN105 connector of the RLYB·
assembly.
Note: Refer to ''Replacing the Pick- up'' ( ~ P44).
7

5. P.C.B. LOCATIONS
&
LSFB ASSEM_BLY
LMCB ASSEMBLY
PWID ASSEMBLY
RLYB ASSEMBLY
BLMB ASSEMBLY
(Included in spin.die motor)
KE · YB ASSEMB·LY
PREB ASSEMBLY
VWV-106
DEMB ASSEMBLY
DWV1008
RECB ASSEMBLY
SRVB ASSEMBLY
DWS1009
FMPB ASSEMBLY
DRVB ASSEMBLY
VYR-043
JACK ASSEMBLY
B

A
..
B
--.
~
C
....,
/
...
•
•
D
8. ELECTRICAL PARTS LIST
NOTES:
• When ordering resistors, first convert resistance values into code form as shown in thefollowing examples.
Ex. 1 When there are 2effective digits (any digit apartfrom 0), such as 560 ohmand47k ohm (tolerance is shown byJ =
5%, andK = 10%) .
560Q 56 X 10
1
561 .......................... RD J/4PS rJJ ffil [TI J
47kQ 47 X 10
3
473 .......................... RD l/4PS ri1 l1l 111 J
0.5Q ORS ...............................................RN2H rJJJ IRl l3J K
IQ 010 .............................. .. ................ RSlPriiJ m riiJ K
Ex. 2 When there are 3 effective digits (such as in high precision metalfilm resistors).
5.62kQ . 562 X 10
1
5621 ........................ RN1/4SR l3J lill ~ DJ F
• The & markfound on some component parts indicates the importance of the safetyfactor of the part. Therefore, when
replacing, be sure to useparts of identicaldesignation. ·
• For yourparts Stock Control, thefast movingitems are indicated with the marks** and*.
** GENERALLY MOVES FASTER THAN*
This classification shall be adjusted by each distributor because itdepends on modelnuinber, temperature, humidity, etc.
• Parts markedby "(j)" are not always kept in stock. Their delivery time may be longer than usual orthey may be unavail-
able.
Miscellaneous Parts
P.C.B. ASSEMBLIES
Mark
Symbol & Description Part No.
Mark
Symbol & Description Part No.
& LSFB assemb
ly
Thru type capacitor (1 000p) VCG-005
KEYB assembly
(SLIDER MOTOR)
DRVB assembly
VYR-043
**
Tilt motor
VXM - 060
PREB assembly
VWV - 106
**
Slider motor VXM-074
DEMB assembly DWV1008
**
Spindle motor
VXM - 075
(incorporated in BLMB assembly)
SRVB assembly
DWS1009
FMPB assembly
Loading motor VXM-054
RECB assembly
Potentio meter
VCS - 017
PWID assembly
JACK assembly
LSFB Assembly
RL YB assembly
FILTER
LMCB assembly
Pick-up assembly
VWY1005
Mark
Symbol & Description Part No.
& LI Line
filter VTL-004
OTHERS •
Mark Symbol & Description Part No. CAPACITORS
& * T1
Power transformer
DTT1002
Mark Symbol & Description Part No.
&
AC Power cord
DDG1001
&
C1, C2
(0.01µF)
RCG-009
&
**
FU1-FU4 Fuse (3A)
VEK-018
(VCG-044)
**
IC201
(SRVB assembly) PD5050
&
**
SI Power switch
DSA1003
PSN-003
KEYB Assembly
**
S2
Leaf switch (TABLE POSITION) SEMICONDUCTORS
**
S3
Slide switch (DISC CLAMP)
VSK - 010
**
S4 Slide switch (DRAW -IN)
VSK-011
Mark Symbol & Description Part No.
**
S5
Leaf switch (TlLT LIMIT)
PSN-003
IC1 PD0012A
**
(VSK-015)
**
IC2 HD74LS145P
**
01 2SC1740S
**
S6
Slide switch (DOOR)
VSK-012
-
D1 SLH-56VC3H
& *
C1, C2
Ceramic capacitor
RCG-009
D2-D6 SLH-56MC3H
*
(VCG- 044)
Ceramic capac itor
CKDYF473Z50
(TILT MOTOR) *
D7
1SS254
39

SWITCHES
Symbol & Description
-- -
Mark Part No.
- - - -- --
** S1 Tact switch (REJECT) DSG1001
** S2-S7 Tact switch (P L AY , DISPLAY, VSC- 012
SCAN, STILL/STEP)
** FSW SP DIP switch DSX1001
C APA C IT ORS
Mark Symbol & Description
---
C1
C2
C3
C4, C5
RESISTORS
•
Part No.
CCDSL331J 50
CEASR47M50
CEAS470M25
CKDYF 103250
CAPACITORS
Mark
---
Symbol & Description Part No.
C22 CCDSL331J50
C20 CCDSL 471J50
C1, C21 CEAS1 OOM50
C2, C7, C9, C10, C15, C16, C24 - C26 CEAS220M50
C3,C6 CEHA0220M50
C12
C32
C19
CEAS221M16
CEHA0101M50
CKDYB102K50
C4,C5 ,C8, C13,C14,C17 , C18 , C29 CKDYF103Z 50
C30,C31 CKDYX473M16
C33
C11
CEAS101M25
CEHA0221 M25
NOTE:When ordering resistors, convert the resistance value RESISTORS
into code form, and then rewrite the part no. as before. NOTE:When ordering resistors, convert the resistance value
Mark Symbol & Description
-- -
R1 -R17
DRVB Assembly (VYR-043)
SEMICONDUCTORS
Mark Symbol & Description
-- -
** IC3
** IC1
** IC2
** 06
** 016
** 014
** 01 , 07
** 04
** 012
** 09
** 02 , 08
** 015
** 013
** 05
** 01 1
·** 010
** 03
* 010 , 01 1
* 01, 02 , 05
* 08
*
06
* D3,
D4
* D7
* D9
*
D12
COIL
Mark Symbol & Description
L1 Choke coil (1.2mH)
40
Part No.
R D 1/6PM □□ □ J
Part No.
MB3763
M5218P
NJM4556DE
2SA1096
2SA1283
2SA886
2SA933S
2S81016
2SB910M
2SC1627
2SC1740S
2SC3243
2SC194·7
2SC2497
2S01226M
2S012 67
2SD1407
1SR35-1OOAVL
1SS254
HZ11B2
HZ4C3
HZ5C1
HZ6C3
S2K20
MTZ10B
Part No.
VT T-070
into code form, and then rewrite the part no. as before.
Mark
---
Symbol & Description
R10
R20, R22- R24
R21 (1.20/3W)
R48 (4.70/1W)
R19 (2.70/1 W)
R50
R37
R51 4. 70
R31, R44 470
Other r es istors
OTHER
Mark Symbol & Description
Transistor holder
PREB Assembly (VWV-106)
SEMICONDUCTOR S
Mark Symbol & Description
---
** IC5
** I C1 -IC4
** IC6
** 010
** 0 11, 014 - 016
**
06
**
08
**
01 - 03
**
04 , 05,012
**
07, 013
**
09
*
014
*
D7,D8
* D9
* D12
*
D1 -D6, D10, D11
*
D13
* TH1
Part No.
RD1/4VM331J
RN 1 /6P02202F
VCN-092
VCN- 099
VCN- 100
RD1/4PM181J
RD1/2PMF □□□ J
DCN1001
DCN1003
RD1/6PM □□ □ J
Part No.
VBK- 023
Part No.
AN6581P
NJM4558S
µPC339C
OTA124ES
OTC124ES
2SA933S
2S8909M
2SC1674
2SC1740S
2SD1225M
2SK30ATM
HZ5C2
MTZ 3.6A
MTZ 5.6C
TLR123
1SS254
1S2473
D33A
-

•
CAPACITORS
Mark
- --
Symbol & Description
C5,C8,C 1 0,C20,C32
C12,C18,C23 , C26
C36
C15,C16
C3,C14
C1, C17, C31
C27-C29
C2,C4,C6,C7,C11,C19,C21,C22 ,
C24, C25 , C30, C33-C35, C38
C37
C13
RESISTORS
Part No.
CEAL010M50
CEAL 100M16
CEAL2R2M50
CEAL470M16
CEANPR47M50
CEANP4R7M35
CKPUYB102K50
CKDYF 103250
CK DYX473M25
COMA273J50
NOTE:When ordering resistors, convert the resistance value
into code form, and then rewrite the part no. as before.
Mark
Symbol & Description
* VR7 Semi-fixed 1
00k
*
VR8
Semi-fixed 2. 2k
* VR2 Semi-fixed
22k
* VR1, VR5, VR9 Semi-fixed
4. 7k
*
VR4
* VR6
* VR3, VR10
R79,R80
R47
R96
Semi-fixed 47 k
Semi-fixed 1k
Semi-fixed 1 Ok
Other resistors
DEMB Assembly (DWV1008)
SEMICONDUCTORS
Part No.
VRTB6VS104
VRTB6VS222
VRTB6VS223
VRTB6VS472
VRTB6VS473
VRTB6VS102
VRTB6VS103
RN1/6PO □ □□□ F
RD1/4PM □□□ J
RD1/2PMF3R3J
RD1/6PM □□□ J
Symbol & Description Part No .
-- - ----- -------- - -- -- - -
Mark
** IC2
** I C20 1
** IC202
** I C1
** I C203
** IC3
** I C204
** 0101 , 0302
** 0301, 0303, 0304
** 0 1 02, 0103, 0203
HA12043
PA0023
PA3018
PA3020
PM0001
µPC4558C
DYY1001
UN41 12
UN4212
2SA933S
** 0201 2SC1674
** 01, 02, 0202, 0204 - 0213, 0305, 2SC1740S
0306, 0401 - 0404
* D1, D2, D101-0104, 0201, 0202 1SS254
COILS AND FILTERS
Symbol & Description Part No.
- ------ - -- -~ - - --- - -
Mark
L1 Coil (56µH)
L2, L4 Coil (7.5mH)
L3 , L206, L30 1 Coil (39µH)
L201 Coil (27µH)
L202-L205 Coil (18µH)
LAU560J
VTL-268
LAU390J
LAU270J
LAU180J
Mark
Symbol & Description· •
L207 Coil (43µH)
L208 Coil (22µH)
L209 , L210 Coil (390µH)
L211 Coil (100µH)
L212 Coil (220µH)
L213, D214
Coil (47µH)
L302, L303 Coil (10µH)
F1
B.P.F. (2.3MHz)
F2 B.
P.F . (2.8MHz)
F401
Low pass filter
CAPACITORS
Mark
- - - Symbol & Description
C207,C209,C221,C234,C265
C225
C23,C301
C5 , C13,C31
C224,C235
C257,C263
C208,C256,C262,C266
C14,C32,C238
C4,C22
C223
C237,C302,C303
C25,C205,C206,C264
C219
C7
C258
C210, C242 - C244
C260,C261
C211
C227
C40
C42
C273 , C278
C255
C259
C11,C18,C29,C35,C50,C230,
'
C401,C404
C274,C277,C279,C281,C282
C231
C36,C37,C43 , C44
C245,C403,C406
C16,C45,C226
C214,C215,C220,C228,C241,
C250,C252,C271,C275,C276,
C54,C272,C283
C232 , C233
C15,C33
Part No .
LAU430J
VTL-239
VTL-252
LAU101J
VTL -249
LAU470J
LAU100J
VTF-051
VTF-052
VTF-060
Part No.
CCCCH080050
CCCCH100D50
CCCCH101 J50
CCCCH111J50
CCCCH150J50
CCCCH 180J 50
CCCCH220J50
CCCCH221J50
CCCCH270J50
CCCCH330J50
CCCCH390J50
CCCCH560J50
CCCCH680J50
CCCCH820J50
CCCSL 121J50
CCCSL181J50
CCCSL241J 50
CCCSL271J50
CCCSL330J50
CEANLR47K50
CEANL220K16
CEANP100M16
CEANP3R3M50
CEANP4R7M25
CEAS100M50
CEAS101M10
CEAS220M50
CEAS221M10
CEAS3R3M50
CEAS4R7M50
CEAS470M25
CEAS471 M6R3
CKCYB102K50
CKCYB472K50
C1-C3, C6, C19-C21 , C24 , C52, CKCYF 103250
C53,C201 , C203,C212,C213,
C216-C218, C229, C236, C239, C240 ,
C249, C251, C254, C267 - C270,
C280,C304,C305,C307 , C405
41

JACK Assembly
OTHER
Symbol & Description
- - -
Mark
Part No.
Stereo mini jack (EXT CONT) DKN 1001
RL YB Assembly
SEMICONDUCTORS
Mark
Symbol & Description Part No.
**
0101
DTC124ES
**
0102 2SD1225M
.
**
0103 2SC3243
*
D101,D102
1S2473
RELAY
CAPACITORS
Mark
- --
Symbol & Description
C1, C2
C101
C102
RESISTORS
Mark
-- -Symbol & Description
R101
R102
LMCB Assembly
Part No.
CKDYF103250
CEAS100M50
CEANP1 00M 16
Part No.
RD1/4VM102J
RD1/4VM331J
No electrical parts are supplied for this assembly.
Mark Symbol & Description Part No. PWID Assembly
-..:..------=- - ---- -----------
** RY1 Re l ay
VSR- 005
9. REPLACING THE PICK-UP
1. Disconnect the connectors for the PREB assembly (5),
BLMB assembly (1) and RLYB assembly (1).
PRE B ......... CN2, CN 14, CN24, CN37, CN33
BLMB ......... C N 8
RL YB ......... CN105
CN14 CN37 CN33 CN35
CJ
□ CN34 PREB
CN24 ~
Mechanical assembly
screw
ASSEMBLY
*
CN31 cN
2
~
CN31-18
Fig. 9-1
Mechanical assembly
/ screw
SPDL motor
r -- --,
BLMB
ASSEMBLY
CNS
2. Remove the 3 Mechanical assembly screws, disconnect the
PREB assembly ground and remove the Mechanical assem-
bly from the chassis. Confirm that the structure around the
pick-up is as shown in the diagram below. (Fig. 9-2).
.
Ti It Sensor assembly r-- ---'-~~ ----
adjustment screw
Slider Shaft
-- ---4
\l.._~==$ ~ ~F=,
Pick- up assembly
mounting screw
Pick-up assembly tilt
adjustment hole
.
Pick-up tangential tilt
adjustment screw
44
<ID
___..,_ __,
+~..._::!"-Pick- up assembly
mounting screw
Grating adjustment hole
Fig. 9-2
SEMICONDUCTORS
Mark Symbol & Description Part No.
* D101 (POWER)
RESISTORS
SLH-56VC3H
Mark
Symbol & Description Part No.
R101 RD1/6PM271J
3. Move the Pick-up assembly to the center of the Slider Shaft
and remove the Pick-up assembly mounting screws.
4. Disconnect connector CN31 on the PREB assembly end of
the flexible cable connecting the PREB assembly and Pick-
up assembly.
Note: Use care not to damage the connectors of the flexi-
ble cable. Do not touch the connectors of the flexi-
ble cable or the solder joints of the Pick-up assembly
with the hands in order to avoid damaging the laser
diode with static electricity.
5. Connect the flexible cable of the new Pick-up assembly to
CN31 of the PREB assembly and mount the Pick-up assem-
bly on the slider. Adjust the angle of the Pick-up assembly
so that it is parallel with the Slider Shaft and lightly tighten
the mounting screw. This completes the replacement of the
Pick-up assembly.
Note: Fully tightening the mounting screw of the Pick-
up assembly makes it difficult to adjust the tilt later;
therefore, do not tighten until the spring washer is
completely flat.
Note: After replacing the Pick-up assembly, make the
following adjustments.
• Mechanical adjustments
• Electrical adjustments

•
...
..
Mark
---
Symbol & Description
C170
C114, C122
C31,C32,C90,C118,C120,C121,
C130,C154,C166,C167,C207,
C215,C324,C326
C23
C2
C15,C52,C57,C80
C4,C7,C9,C10,C45,C51,C58,
C111, C112, C116, C171, C314, C316
C11 - C14, C53 - C56, C103
C25,C26,C124,C127,C132,
C164,C165
C131, C217-C219, C312
C41,C42,C99
C6,C30,C44,C48,C63,C78,C89,
C105,C117,C157,C205,C206,
C301,C302,C313,C315,C323,
C325
C88,C133,C169
C3,C8,C16,C19,C46,C49,C59,
C115, C119, C125, C126, C152, C153,
C156,C161,C198,C220,C333,C334
C102,C308
C162,C210
C5,C29,C47,C109,C311,C340
C92,C95,C97,C98
C83,C85
C67
C209
C35,C36,C320
C82
C79,C322
C305
C108
C304
C107
C91,C94,C306
C201,C310
C303,C321
C40
C93
C66
C75,C76
C96,C139
RESISTORS
Part No.
CEAS101M10
CEAS221M10
CEAS470M25
CEJANP4 70M 10
CEJAR47M50
CEJA 100M16
CEJA220M16
CEJA4R7M50
CEJA470M16
CKDYB102K50
CKDYB681K50
CKDYF103Z50
CKDYF223Z50
CKDYX473M25
COMA 102J50
COMA103J50
COMA104J50
COMA 122J50
COMA 123J50
COMA124J50
COMA 152J50
COMA 153J50
COMA 183J50
COMA223J50
CQMA392J50
COMA393J50
COMA473J50
COMA563J50
CQMA682J50
CQMA683J50
COMA822J50
CQMA823J50
COSA 122J50
CQSA271J50
CKDYB222K50
COMA222J50
NOTE:When ordering resistors, convert the resistance value
into code form, and then rewrite the part no. as before.
Mark Symbol & Description Part No.
*
VR12
Semi-fixed 1k
VRTG6VS102
*
VR3
Semi-fixed 2.2k
VRTB6VS222
* VR4 Semi-fixed
22k
VRTB6VS223
*
VR9,VR10
Semi-fixed 47k
VRTB6VS472
* VR5, VR6,
VR8 Semi-fixed 4. 7k
VRTB6VS473
Mark Symbol & Description
---
* VR 11 Semi-fixed 4. 7k
R102 - R104
Other resisters
OTHERS
Mark Symbol & Description
* X201
* X202
Crystal resonator
Crystal resonator
64P IC socket
FMPB Assembly
SEMICONDUCTORS
Mark Symbol & Description
** 01
* D1, D2
* D3
CAPACITORS
Mark Symbol & Description
C1
C2
C3
RESISTORS
Part No.
VRTG6VS472
RN1/6PO □□□□ F
RD1/6PM □□□ J
Part No.
DSS1001
VSS- 043
VKH-029
Part No.
2SK117
HZ3B3
1S2473
Part No.
CQMA102J50
CEA010M50
CEANP4R7M35
NOTE:When ordering resistors, convert the resistance value
into code form, and then rewrite the part no. as before.
Mark Symbol & Description
R1 - R6
RECB Assembly
SEMICONDUCTORS
Mark Symbol & Description
* D101 -
D104
*
D105-D108
*
D109-D112
*
D113,D114
CAPACITORS
Mark Symbol & Description
C107
C108,C109
C101-C104
C106
C105
RESISTORS
(2200µ/25V)
(4700µ/1 0V)
(6800µ/1 0V)
Part No.
RD1/4VM □□□ J
Part No.
SM1.5-02
1SR35-1 00AVL
1SR35-1 00VL
ISS254
Part No.
CEAS3R3M50
CKDYF 103250
VCH- 039
VCH-040
VCH-041
NOTE:When ordering resistors, convert the resistance value
into code form, and then rewrite the part no. as before.
Mark Symbol & Description Part No.
- --
R101,R102
RD1/6PM □□□ J
43

Mark Symbol & Description Part No.
C248,C306 , C308
CKCYF223Z50
C51
COMA102J50
C41
COMA104J50
C8,C9,C12,C26,C27,C30 COMA152J50
C17,C34
COMA333J50
C10,C28
COMA562J50
C38,C39
COMA683J50
C402
COSA821J50
C202
CCCSL 151J50
C46,C47
CEASR47M50
RESISTORS
NOTE:When ordering resistors, convert the resistance value
into code form, and then rewrite the part no. as before.
Mark Symbol & Description
---
* VR1, VR2 Semi-fixed 22k0-B
* VR201, VR202 Semi-fixed 1 k0 -8
R252 4.70
R36
R3,R13,R14,R19
Other resistors
OTHERS
Mark Symbol & Description
1 5P 0-SUB socket assembly
3P terminal
5P DIN socket
DL201 220nS D. L.
SRVB Assembly (DWS 1009)
SEMICONDUCTORS
Mark Symbol & Description
**
IC1,IC2
**
IC3
**
IC4
**
IC5
**
IC6
**
IC7
**
IC8, IC9
**
IC10
**
IC 11
**
IC202
Part No.
VRTB6VS223
VRTB6VS102
DCN1001
RD 1/4VM47 5J
RN1/6PO □□□□ F
RD1/6PM □□□ J
Part No.
DXX1031
VKB- 015
VKN-165
VTF-061
Part No.
TL8614P
PA0017
PA0009
PA9003
PA0018
PA5009
NJM4558S
PM2001
µPC4558C
PD0011
* * IC203 MB89011P - 102
** IC204 SN74LS123N
* * IC205 SN74LS04N
** IC206 µPC393C
** IC301 PM4001
** IC302, IC303 NJM 45580
** 01, 03-014, 019, 024 , 026 , 029, 2SC1740S
** 030, 032, 033, 0204, 0303 - 0306,
** 0309
** 02, 018, 021, 027 , 034 2SA933S
42 .
Mark Symbol & Description
**
020, 022 , 031, 035, 0201, 0206,
**
0307,0308
**
023, 036, 0302
**
025
**
0202,0203 , 0205,0301
* 01
*
06
*
02
*
0301
*
026
* 04, 05, 07 - 010, 013 - 015,
* 017 - 025, 0201 - 0203,
* 0302-0307, 0310
* TH303
COILS AND FILTERS
Mark Symbol & Description
L202
Coil (22µH)
L2 Coil (68mH)
L1, L5 Coil (22µH)
L9 Coil (27µH)
L6 Coil (68µH)
L10,L11
Coil (1 OOµH)
L3 Coil (120µH)
L201 Coil (220µH)
L4 Coil (6.8µH)
F1-F4, F201, F202 3 terminal filter
CAPACITORS
Mark
- --
Symbol & Description
VC201 Ceramic trimmer (45p)
VC202 Ceramic trimmer (20p)
C77,C208
C211,C212
C213
C203,C204
C110
C43,C101,C128
C22,C62
C81
C34
C27,C38,C39,C64,C202
C1,C20,C60
C33
C86,C100
C21, C61
C28,C37,C307
C216 , C317,C319
C129,C172
C106,C318
C160,C163,C335
C84
C65,C309
C87
C68
Part No.
UN4212
2SK184
2SC1627
UN4112
HZ12A3
HZ383
HZ981
MTZ7.5B
SVC321SP
1SS254
D33A
Part No.
LAU220J
LAU680K
VTL-239
VTL-240
VTL-243
VTL-245
VTL- 246
VTL-249
VTL-233
VTH-005
Part No.
VCM - 003
VCM-008
CCDCH100050
CCDCH180J50
CCDCH270J50
CCDCH1 50J 50
CCDCH330J50
CCDSL101J50
CCDSL1 20J 50
CCDSL221J50
CCDSL241J 50
CCDSL331J 50
CCDSL390J 50
CCDSL4 70J 50
CCDSL680J50
CCDSL750J50
CEANPR47M50
CEANP010M50
CEANP100M16
CEANP2R2M50
CEANP3R3M50
CEANP330M25
CEANP4R7M25
CEANP470M16
CEAS010M50

•
10. MECHANICAL ADJUSTMENTS
10.1 TOOLS AND JIGS REQUIRED FOR AD-
JUSTMENT
• Dual trace oscilloscope
• AF oscillator and frequency counter
• Video monitor and connecting cord
• Remote control unit (option)
• LD test disc
• Eccentric screwdriver I (GGV-129)
10.2 ADJUSTMENT PRECAUTIONS
1) Handling the Test Disc
• When loading or unloading a disc, always return the player
to a nearly level position. When function key 2 is turned on
and the disc table is pushed in about 4 cm, playback will
start automatically. When this happens, press the [REJECT]
key of the remote control unit to stop the player; then stand
the player vertically after the disc stops turning.
• Do not press the [REJECT]key (~) on the front panel with
the player standing on end. Press only the [REJECT] key
of the remote control unit after the disc stops turning.
2) TRKG servo and SLDR servo open
• To open the TRKG servo, short between pins (20) and (22)
(+5V) of IC301 of the SRVB assernbly {FTS section). If the
Pick- up assembly starts to move when the TRKG servo is
opened, the SLDR servo must also be opened. This can be
done by disconnecting the CN33 connector of the PREB
assembly.
C307 R317
(NPT i1
T
C308 I
VC201_,>.
o:J t- o
C208
C3H5 o-f J-o
o-1 f-o oJ,M,--o ~ C316
C312 R314 R318 o-1 ~ +
+
00000000000000 I
f 5 10 14
IC 301
28
20
0 0 0 0 0 0 0 0 0 0 0 0 0 0
C317
C322 R35t R335 (NP) R334 R316 R337 R322
····J fit+f½++fIii 11 i
R315 R3~ C3t8 0305 0304 R340 R336 c2o7
0--AJ.l,,-0 0306 (NPI ~301
~ .,lf ,~J\ I ctm ~~ • !(~
305
'
R348 ( NP I Q30ro o o->.N,,-<J
I~
R323 R324 C340 0310 R319
l l l l Tl l J. t l o->M o R
326
t t t f It f f o f:1 o C309
0303 R327 R360 R356 ( Np)
Fig. 10-1 The area around IC301 of the
SRVB assembly
C2<
• If an attempt is made to search with the TRKG servo opened
and the tracking servo will not close for some reason, the
Pick-up assembly will move close to the target area but the
search will not be completed so the image will not appear.
If this happens, press the [CLEAR] key to end the search
operation so that the image can be output.
When playback is started with the tracking servo open, the
[CLEAR] key must also be pressed to output the.image after
the disc reaches the correct speed (1800 rpm).
3) The test mode
• This device is equipped with a test mode for adjusting inside
and outside position detection.
Turn off the power switch with the disc table closed; then
open the door in the front panel by hand and turn on the
power.
The test mode can be entered by the above operation (it is
all right if the door closes when the power switch is turned
on).
If a disc goes past the inside or outside position when played
by pressing the [DISPLAY] key with the player in the test
mode, an asterisk (*) will be displayed in the upper left cor-
ner of the monitor screen. This display will not appear if
within the playback area of the disc.
• In addition to the above, the test mode can also be used as
follows.
1. Start-up
Turn on (down) function switch no. 8 (KEYB assembly) and
turn on the power.
OPEN
D □ D □ D D D □
-(OFF)
1 2 3 4 5 6 7 8
-(ON)
Fig. 10-2
2. Start-up operations
G) The LED indicators will light in the following sequence only
once when the power is turned on.
PARK ~ PLAY ~ SEARCH ~ AUDIO (2/R) ~ AUDIO
(1/L) ~ KEY LOCK
@ All of the characters will be displayed repeatedly on the
monitor in a 20 character x 9 column format.
@ The contents of the ROM of the MPU are checked. If there
is no problem, the ROM version and function key status will
be displayed in the 9th column on the monitor screen.
Typical display
•••••••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••••••
1 0 0 4 : 1 0 0 0 0 0 0 0
45

3. Additional functions
G) When either the inside or outside limit switch is on, an
asterisk (*) will be displayed on the screen to the right of
the frame number.
@ When a disc has not been loaded, the 3 MHz oscillator out -
put appears at pin (3) the decoder IC202 (PD00l 1) of the
SRVB assembly. (Refer to ''PD00l 1(IC202) Logic Frequen-
cy Adjustment'', page 57.)
@ The I-minute reject backup is disabled when either the
spindle or focus is not locked.
© The following operations are possible using remote control.
Remote Control Key Input
''0'', ''FUNC'', ''0''
''1'', ''FUNC'', ''0''
''2'',. ''FUNC'', ''0''
Operation
PD00 11 oscillates (oscilla-
tion disabled by '' 0'',
''FUNC'', ''0'' due to
toggle operation).
Opens the tracking servo.
(Released by ''SCAN'')
Checks PD0011 and
MB89011P-102.
4. When leaving the test mode, always turn off (up) func -
tion switch no. 8.
10.3 PREPARATIONS FOR ADJUSTMENT
1. Remove the mechanical assembly of each PREB assembly.
2. Loosen the Pick-up assembly mounting screw by hand just
enough that the Pick-up assembly can be moved and set the
Pick - up assembly parallel to the shaft.
3. Adjust the Tilt Sensor assembly tilt adjustment screw so that
the tilt sensor PC board is roughly parallel with the board
mount. (Fig. 10-3)
46
Tilt sensor
Approximately parallel
♦
Tilt Sensor tilt adjustment screw
Fig. 10-3
4. Disconnect the CN34 connector of the PREB assembly.
5. Turn the end of the tilt motor worm gear by hand until the
rib section of the mechanism chassis is parallel with the
bottom of the tilt base. (Fig. 10-4)
T ilt limit -..-
1
::::::=-
switch
Tilt motor
Slider shaft
Tilt base
Turn the end
of the worm
gear by hand
Make parallel
Mechanism chassis
Fig. 10-4
6. Mount the Mechanical assembly in the player and connect
the PREB assembly and BLMB assembly connectors. Leave
the CN34 connector of the PREB assembly disconnected.
(Refer to Fig. 9-1.)
Note: If CN34 is not left disconnected, the Pick-up assem-
bly tilt adjustment will not be possible later.
7. Load the LD test disc with the player in the status shown
in Fig. 10 -5.
PREB
ASSEMBLY
SRVB
ASSEMBLY
-
Fig. 10-5 Player status during adjustment

..
10.4 FOCS OFFSET ADJUSTMENT (VR1)
1. Turn on the power with no disc in the disc table.
2. Adjust VR1 so that the voltage at TP2 (FOCS error signal)
is OV.
10.5 GRATING COARSE ADJUSTMENT
1. Remove the 3 mounting screws of the PREB assembly.
2. Load and play the test disc. If the grating is greatly out of
adjustment at this time, playback cannot be started if only
the PLAY lamp on the front panel is flashing. In such cases,
perform a coarse adjustment on the grating.
3. Press the [PLAY] key.
4. The TRKG servo will open when the spindle accelerates.
(Ref er to '' Adjustment Precautions.'')
5. Press the [CLEAR] key of the remote control.
6. Press the [DISPLAY] key of the front panel to display the
frame number on the monitor screen.
7. Move the Pick-up assembly to frame # 15,000 using the
[SCAN] ( 1111 1111 ) key of the remote control.
8. Insert Eccentric Screwdriver I into the grating, as shown in
the diagram.
PRES
ASSEMBLY
DEMB
ASSEMBLY
Fig. 10-6 Grating adjustment
Note: Inserting Eccentric Screwdriver I.
The grating adjustment hole of the Pick-up assembly cannot
be seen directly when making an adjustment; therefore, when
inserting Eccentric Screwdriver I, it may be difficult to find the
correct position in some cases. There is danger of damaging
the laser diode, so please use the following procedure to insert
Eccentric Screwdriver I into the grating adjustment hole.
Procedure
G) Place Eccentric Screwdriver I in the position shown in
Fig. 10-7(a).
@ From this position, move Eccentric Screwdriver I along
the surf ace on the right side until it contacts the top.
(Fig. 10-7(b))
@ From that position, move Eccentric Screwdriver I along the
underside of the top and to the left for approximately 5mm
until it enters the grating adjustment hole. (Fig. 10- 7(c))
0
0
{a)
0
0
{b)
0
{c)
Fig. 10-7 Inserting Eccentric Screwdriver I
9. Connect an oscilloscope to TP4 on the PREB assembly and
observe the tracking error signal. Use Eccentric Screwdriver
I to adjust the tracking so that amplitude is minimum and
the waveform envelope is smooth. (Photo 10-1)
Photo 10-1 TR KG error waveform
100mV/div
5mS/div
(loop open, minimum amplitude)
From that position, slowly rotate the screwdriver in the direc-
tion shown by the arrow in Fig. 10-6 to adjust the grating so
that the amplitude of the initial error signal is maximum. (Photo
10-2)
47

•
Photo 10-2 TR KG error waveform
100mV/div
5mS/div
(loop open, maximum amplitude)
10.6 TRKG ERROR BALANCE ADJUSTMENT
(VR4)
• Open the TRKG servo. (Refer to ''Adjustment
Precautions.'')
1. Use fast forward to move to the area near frame # 15,000
and observe the TRKGA (A-C) signal (TRKG error signal)
at TP4. Adjust VR4 so that the center of the waveform
amplitude is at DC0V. (Photo 10 -3)
2. Remove the connection which opens the TRKG servo.
PRES. TP4
200mV/d iv
5mS/div
Photo 10-3 TR KG error waveform (loop open)
10. 7 SLDR SHAFT LEVEL ADJUSTMENT
1. Connect pin ( 18) (flexible cable, FOCS coil) of connector
CN31 of the PREB assembly to the oscilloscope through LPF
and observe the voltage flowing in the focus coil.
lOOkQ
CN31-18 Pinn-----"
Oscilloscope
I. I µF
Fi g. 10-8 L. P. F
48
\
2. Search frame # 17,000 and measure the DC voltage being
supplied to the FOCS coil.
3. Search frame # 100 and measure the DC voltage in the same
way to make sure that it is within ±90mV of the DC volt-
age measured in the item above.
4. When this rating is not satisfied, rotate the tilt motor by hand
until the DC voltages for frames # 100 and # 17,000 are the
same.
10.8 PICK-UP TILT ADJUSTMENT
1. Close the TRKG servo.
2. Search frame # 18,914.
3. Lift up the PREB assembly slightly and insert Eccentric
Screwdriver I into the tilt adjustment hole of the Pick-up
assembly. Slowly turn the screwdriver toward the rear panel
side and adjust until the crosstalk is minimum and the same
for both the left and right.
4. Search frames # 104 and # 18,914 and make sure that cross-
talk is minimum at both. If excessive crosstalk appears on
the screen even after adjusting the tilt of the Pick - up assem-
bly, fine adjust using the Pick- up assembly tangential tilt
adjustment screw shown in Fig. 10-9 to minimize the
crosstalk.
PREB
ASSEMBLY
/
Pick-up assembly
(}
())
C)
Pick-up assembly
tilt adjustment
Fig. 10-9 Pick-up assembly adjustment location

-
10.9 FOCS ERROR BALANCE ADJUSTMENT
(VR2)
1. Search frame # 104.
2. Adjust VR2 so that the crosstalk striped pattern on the l eft
and right sides of the monitor screen are not visible. (F ig.
10-10)
,r,..,/
-:;:::::::. -:;:::::::.
~
-:;:::::::. -:;:::::::.
/',..,,'
~
-:;:::::::. /',..,,'
~
-:;:::::::. -:;:::::::.
%
-:;:::::::.
,,.._,_.,
~
-:;:::::::.
~
~
-:;:::::::.
%
~
/"'.;/
~
~
-:;:::::::.
.,,..__,,
-:;:::::::.
~
~
:::::::;
,r,..,/
%
-:;:::::::.
,r,..,/
~
-:;:::::::.
-:;:::::::.
~
/',..,,'
~
# 1 03
# 1 04 t 1os
Fig. 10-10 The influence of crosstalk
10.10 TILT SENSOR TILT ADJUSTMENT
1. Search frame # 104.
,,.
2. Turn the tilt sensor tilt adjustment screw until the voltage
at TP7 of the PREB assembly is 0- 50mV. (Use care to
prevent external light reaching the sensor.)
3. Again remove the Mechanical assembly from the chassis and
fully tighten the Pick-up assembly mounting screws.
4. Mount the Mechanica l assembly in the chassis and conn e ct
the CN34 connector of the REPB assembly.
5. If there is crosstalk at frames # 104 and # 18,914, readjust
the tilt of the Pi ck-up assembly from the begi nni ng.
10.11 GRATING FINE ADJUSTMENT
• Connecter CN34 of PREB assembly must be connected.
1. Open the TRK G servo.
2. Set the oscilloscope to the X-Y mode, and adjust the X an d
Y zero points. (Set the beam spot of the oscilloscope in the
center of the CRT scale.)
Connect TP4 to the X input and pin (5) (TRKG (A+ B) of
connector CN24 to the Y input.
3. Press the fast forward key of the remote contro l and move
to the area near frame # 15,000.
• Adjust the grating until the Lissajous figure is
horizontal.
10. 12 TRKG LOOP GAIN ADJUSTMENT (VR5)
G) Connect the oscilloscope to the oscillator, as sho wn in Fig.
10- ll(a) , and set t he oscilloscope to the X-Y mo de.
@ S ea r ch the ar ea near frame # 15,000.
@ Set the oscillator output as shown in Table 10-1.
@ Adjust VR5 so that the Lissajous figure is horizontal. (Photo
10-4)
Test Disc
Fl
F2 F3
F4 F5
Frequency (kHz)
3.0 3.7 3.3 3.3 3.3
Ou t put (Vp-p) 1.2 1.2 1.2 1.2 1.2
Table 10-1 Oscillator output set values
Photo 10-4 Lissajous figure
X: 100 mV/div
Y: 200mV /div
X: oscil lat or
outp ut
Y: TR KG
(A-C) signal
(TRKG loop gain adjustment)
y X y X
AF OS C
AF O SC
TP4
IC4
(2/2)
VR 5
(a) TR KG LOOP
TP2 t l
OOk Q
IC4( I 1 2) IC2( I / 2)
(b) FOCS LOOP
Fig. 10-11 Servo loop gain adjustment
TP3
VR 3
4 9

10.13 FOCS LOOP GAIN ADJUSTMENT (VR3)
Note: Connector CNI00 of the FMPB assembly mus t be dis-
connected when making this adjustmen t; ot he rwise, the
FOCS coil may be burned.
1. Connect the oscilloscope to the oscillator, as shown in
Fig. 10-11(b).
2. Search the area near frame # 15,000.
3. Set the oscillator output as shown in Tab le 10-2.
4. Adjust VR3 so that the Lissajous figure is horizontal.
5. Return the FMPB assembly connection as it was.
Test Disc Fl F2
F3
F4
F5
Frequency (kHz) 2.1 1.7 1.7 2.0
1. 7
Output (Vp-p)
4.0 4.0 4.0 4.0 4.0
Table 10-2 Oscillator output set values
X: oscil lstor output
Y: FOCS error signal (PREB, TP2)
Photo 10-5 Lissajous waveform
X: 1 00mV /div
Y: 200mV /div
(FOCS loop gain adjustment)
10.14 RF LEVEL ADJUSTMENT (VR6)
1. Search the area near frame # 15,000.
2. Observe the RF signal at TP6 and adjust VR6 so that t he
amplitude is 300mVp-p.
Photo 10-6 FR signal waveform
RF signal
100mV/d iv
5mS/d iv
10. 15 INSIDE POSITION DETECTION ADJUST-
MENT (VR8)
1. Turn VR8 fully clockwise.
2. Put the player in the test mode and start playing (ref er to
'' Adjustment Precautions'').
3. Press the [DISPLAY] key of the main unit and check whether
or not an asterisk (*) appears in the upper ri gh t co rner of
the monitor screen.
4. Search frame # 1,500.
5. Slowly turn VR8 coun terclockwise and stop at th e posi ti on
where an asterisk (*) appears in the 1st column of the display.
6. Enter the SCAN mode and make sure that th is point is
between frame # 1,000 and # 2,000.
CNJO
CN14
CN37
CN33 CN35
□
I I · □
□
D
~TP7
Jj
VR6
~
VR7
TP6
VRB
@JJ
@]
CN34
tJ
□
~ TPB
VR10
~
TP3
TPS
TP4 (!j)
~
CO>(@ VR9
®
~
-
VR4
CN24
VRS
VRJ
TP2 TP9
CN31 ~~
CN2
~
VR2
VR1
® 0
Fig. 10-12 PRES assembly adjustment location
50