Teac VRDS-T1 User manual

TEAC
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SERVICE MANUAL
_
VRDS-T1
CD TRANSPORT
Z COMPACT
DIGITAL AUDIO ©
CONTENTS BR
1 SAFETY INFORMATION -:ccceeceeccecccrec cece eeeeeeeeeneeeseeeee D)
2: SPECIFICATION Si kos tes ces cena incendie nxss ncas tepenaceneaeees 3
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3 CASE AND FRONT PANEL REMOVAL --------+--serersee ee 4
HEE ORLA .
4 ADJUSTMENT AND CHECKS «-eeeeeeceeeeeeeceeeeeeeeeess seers 5
2 HER
5 EXPLODED VIEWS AND PARTS LIST ------------++e essere 8
SABRIEN-YURAb .
6 PC BOARDS AND PARTS LIST cevcececereecectececeeeeeeeeees 14
BRB EN-YURAS
7 16 BLOCK DIAGRAMS iiss esesedse cesses seests i esvonausecy da seen 18
ICFOyvyISAVIDA
Effective : August, 1994 5704069500

VRDS-T1
1 SAFETY INFORMATION
SAFETY INFORMATION
This
product
has
been
designed
and
manufactured
according
to
FDA
regulations
“title
21,
CFR,
chapter
1,
subchapter
J,
based
on
the
Radiation
Control
for
Health
and
Safety
Act
of
1968”,
and
is
classified
as
class
1
laser
product.
There
is
not
hazardous
invisible
laser
radiation
during
operation
because
invisible
laser
radiation
emitted
inside
of
this
product
is
completely
confined
in
the
protective
housings.
The
Jabel
required
in
this
regulation
is
shown
@M.
CAUTION
@
If
you
remove
the
above-mentioned
housings
under
the
operating
state
of
the
product,
there
is
a
possibility
of
human
access
to
the
invisible
laser
radiation
emitted
from
the
optical
pickup.
Pay
careful
attention,
not
to
let
the
invisible
laser
beam
enter
into
your
eyes.
@
If
you
find
a
troubled
state
of
the
laser
diode,
change
to
the
specified
new
optical
pickup.
@
|f
you
find
a
troubled
state
of
safety
interlock
parts,
change
to
the
same
type
parts
described
in
parts
list.
CERTIFICATION .
THIS PRODUCT COMPLIES WITH DHHS
RULES 21 CFR SUBCHAPTER J APPLI-
CABLE AT DATE OF MANUFACTURE
TEAC CORPORATION
27 SNAKA:CHO MUSASHINO-SHI TOKYO JAPAN
MANUFACTURED W
Optical pickup: Type : KSS-240A
Manufacturer : SONY. Corporation
Laser
output
:
Less
than
0.2
mW
on
the
objective
lens
Wavelength <:760 — 800 nm
e
CAUTION
eACHTUNG
¢OBSERVERA
e
ADVARSEL
@
THIS
LABEL
IS
ATTACHED
TO
THE
PLACE
AS
ILLUSTRATED
TO
INFORM
THAT
THE
APPARATUS
CONTAINS
A
LASER
COMPONENT.
CAUTION - INVISIBLE LASER RADIATION WHEN OPEN AND
"
£
INTERLOCKS GEFEATED AVOID EXPOSURE TO BEAM
VORSICHT) UNSICNTBARE CASERSTRAHLUNG TROT AUS
WENN DECKEL GEOFFSET UND WENN
SICHERMEITSVEARIEGELUNG UBERBRUCKT 1ST
RICHY DEM STRAW AUSSETZEN?
VARMNG - OSYNLIG LASERSTRALNING NAR DENNA DEL
ARLOPPNAD OCH SPARE AR URKOPPLAD
STAALEN AR FARLIG :
(@
DIESE
AUFKLEBEMARKE
IST
AN
DEM
IN
DER
ABBILDUNG
GEZEIGTEN
ORT
ANGEBRACHT
UM
DARAUF
HINZUWEISEN,
DASS
IM
INNERN
DES
GERATS
EINE
LASER-KOMPONENTE
BEFINDET.
@
PASKRIFTEN
SITTER
PA
APPARATEN
SOM
VISAS
SOM
UPPMANING
OM
ATT
APPARATEN
OMFATTAR
EN
INBYGGD
LASERKOMPONENT.
AOVARSEL » USYNLIG LASERSTRALING VEO ABNING. NAR.
‘SIKKERMEOSAF BRYDERE ER UDE AF FUNK TION
UNDGA UOSETTELSE FOR STRALING
VAROITUS! SUOJAKOTELOA Et SAA AVATA LAITE SISALTAA
(A LAMETTAA INAKYMATONTAI
'SHUMWLLE VAARALLISTA LASEASATEILYA,
ADVARSEL - USYNUG CASERBESTRALING NAR DENNE DELEN ER
'N OG SKKERHETSSPERREN ER UTKOBLET
UNNGA UTSETTELSE FOR STRALING
@
DETTE
MARKAT
ER
ANBRAGT
SOM
VIST
I
ILLUSTRATIONEN
FOR
AT
ADVARE
BRUGEREN
OM
AT
APPARATET
INDEHOLDER
EN
LASERKOMPONENT.
@
DETTE
MERKAT
ER
SOM
VIST
PA
ILLUSTRATIONEN
ANBRAGT
PA
INDERSIDEN
AF
TOPD/EKSLET
FOR
AT
ADVARE
BRUGEREN
OM
AT
YDERLIGERE
FREMTR/ENGEN
VIL
VERE
FORBUNDET
MED
FARE
FOR
AT
UDS/ETTE
SIG
FOR
LASERSTRALING.
:
ADVARSEL-
BETJENING
AF
ANDRE
KONTROLLER
OG
REGULATORER
ELLER
BENYTTELSE
AF
ANDRE
FREMGANGSMADER
END
BESKREVET
HERI
ER
FORBUNDET
MED
FARE
FOR
USDA-TTELSE
FOR
LASERSTRALING.
VARNIG:
APPARATEN
INNEHALLER
LASER
KOMPONENT
MED
STRALNING
OVERSTIGANDE
KLASS
1
“ADVARSEL:
USYNLIG
LASERSTRALING
VED
ABNING
NAR
2
SIKKERHEDSAFBRYDERE
ER
UDE
AF
FUNKTION.
UNDGA
UDSAETTELSE
FOR
STRALING.”
“VAROITUS!
SUOJAKOTELOA
EI
SAA
AVATA,
LAITE
SISALTAA
LASERDIODIN.
JOKA
LAHETTAA
(NAKYMATONTA)
SILMILLE
VAARALLISTA
LASERSATEILYA’.
ADVARSEL: USYNLIG LASERBESTRALING NAR DENNE
DELEN
ER
APEN
OG
SIKKERHETSSPERREN
ER
UTKOBLET
UNNGA UTSETTELSE FOR STRALING.
CLASS 1 LASER PRODUCT
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT

2 SPECIFICATIONS
{rt £R
AUDIO
|
(A-F
44)
Digital
Output
0.5Vp-p/75Q
(Coaxial)
FUIWHA
-15dBm —-21dBm (Optical)
PICK
UP
(Eva
Pu)
Type
Optical
3-Beam
laser
pickup
Ax
Objective
Lens
2-dimensional
parallel
drive
SL
Y
ARRAN
Laser Type GaAlAs type semiconductor laser sta
Wave Length 780nm
SIGNAL FORMAT
Sampling Frequency 44.1kHz
Quantization Bit 16-bit linear/ channel
Channel Bit Rate 4.321 8Mb/sec
Channel Modulation Code
EFM (Eight to Fourteen Modulation)
CIRC (Cross Interleave Reed
Solomon Code)
Error Correction
GENERAL
Power Requirements 120/230V AC, 50-60Hz (U.S.A./
Canada/General Export Model)
230V AC, 50Hz (Europe Model)
240V AC, 50Hz (U.K. Model)
Power Consumption 11 watts
Dimensions (W x H x D)
442 x 149 x 331mm
(17-3/8" x 5-7/8" x 13-1/16" >
Weight (net) Qkg (19-13/16 Ibs)
Standard Accessories Wireless Remote Control Unit
: RC-539(VRDS-TiN)
RC-540 (VRDS-T1B)
Battery (SUM-3, “AA”, “R6”. type)
x2
@lmprovements may result in specification or feature
changes without notice.
VOLTAGE CONVERSION
Be sure to remove the power cord from the AC outlet
before repositioning the voltage converter switch.
1. Locate the voltage selector on the rear panel.
2. Using a flat-bladed screwdriver, set to the appropriate
230 V or 120 V position according to your area.
RR
(25 74—Vy hb)
ALAR
Bite y bh
meL—h
BAX
I>-MEAX
(A)
BRED
SESS
=e
‘Sian
| VRDS-T1
0.5Vp-p/75Q (COAXIAL)
- 15~-21dBm (OPTICAL)
SL
YAH,
KERGE-L
2
RIF
TERED
BRL
780nm
44,1kHz
1BEy h-ULP/FerUa
4.3218Mb/sec
EFM
CIRC
100V AC 50-60Hz
11W
442 x 149 x 331mm(W XH xD)
9kg
@I4VLAUVEIY RC-539(VRDS-T1N)
RC-540(VRDS-T1B)
@ ez Bik (B3, SUM-3) x2
ORRRAS
*
HBR
LOSES,
BORD
PET
BET
SC
CMEVET.
VOLTAGE
SELECTOR
230V
4
120V.

VRDS-T1 |
3 CASE AND FRONT PANEL REMOVAL
KER AORLA
in number- order
Disassemble in
BSmBiCALT< EA

| VRDS-T1
4 ADJUSTMENT AND CHECKS
me cme
4-1 Handling the pickup assembly
@Before servicing the pickup assembly be sure to prevent
electrostatic-inducer destruction by grounding not only
test equipment in use but also yourself as shown in
Fig. 4-1.
* Electrostatic charge drastically shortens the operating
life of the laser diode or possibly results in its
destruction.
@During the transportation, mounting and dismounting
of the assembly, support with your fingers at points
A and B as shown in Fig. 4-2. Be particularly careful
not to touch the actuator, photosensor and LD plate
and do not apply force to them.
@Don’t disassemble the pickup ass’y.
@Don’t apply shock to the pickup ass’y.
@Don’t place the assembly in a place subject to excessive
dust, heat or moisture.
Earth ring
(Lead wire)
Pick-up case
Chassis (GND)
Resistor
IMQ~10MQ
Earth
Fig. 4-1
4-2 Objective
@Laser beams are similar to infrared rays. Don’t look at
the beams directly and keep your eyes at least 30cm
away from them.
@Don’t touch the objective with fingers.
@if objective becomes dirty, playback will deteriorate.
To clean the objective, moisten a good cleaning tissue,
such as made by KODAK, in isopropyl alcohol and wipe
the objective gently. Wipe off and excess fluid with a
dry cleaning tissue.
4-3 SERVO ADJUSTMENT
TEST DISC: MCD-111 or YEDS-18
4-3-1 Checking the pickup actuator operation
Before loading the disc, turn the power ON and check
that the pickup actuator moves up and down six times.
(If the pickup is not at inside on the disc, perform the
above operation after moving the pickup to the inside.)
4-1
E»
77»
7
ASSY
ORK
OLY IT TST ASSY ERORIABSM, WERE CRBERS
F-REMSZLHIZ. ARP AEA, HEBBAL
LO< EW, (Fig. 4-1)
*LD-F-¥Y4A—-laL BBR Md S LAS CEE
Lid, Etc LET OCLERBLT<S RSU.
ORDA, ROAL, HSMUORI, Fig. 4-2OARBE BH
CHATCHSU, BI 7Fat—7—-, HRM, LDS
— held, FAN OHEMARY LIEWEC RSW.
OLY
IT
y
TS
ASSY
RADHES
KOSHI
ELLIE
CE
SW
@LY TT oT ASSY IEF ° GBM AME 6 KS V0
Ot
KIVHLORET
ABM.
BR
SOMME
T
CHEWS
4-2 ety XICOWT
OL — FHA AROA AMARTH. HORLOA, A
LY XAG 30cm LAEMEL TK RSW,
@VVAMUFEMNEWVE RSW.
@UV AANA < EBEREDAUREFLET OT, KO ES Riz
5 OO SO
VY RIYHaVITR—2N— (KODAK HBL) I. ta
L-IPIVA—I (LP.A) SU CHE L. RAROTWE
AZICMPFRE ETCH SW
4-3 +— RI
FARF4RI: MCD-111 H¥IKYEDS-18
4-3-1 EI PF vo ATIF AL—F—BEF cy 7
RON CYy 77 vy ATIF at—-¥-MOM(FAAZ RUT
BIBS
3B)
EPRS
SCE.
(Ev
Ty
TORARMIEBWS
Sid,
RAAKBHRLIMIET
SOL.)
F
4
AT
URBLGW

VRDS-T1 |
4-3-2 Clock frequency adjustment
1. Connect the frequency counter to P411 on SERVO PCB.
2. Adjust C55 so that the clock frequency is 16.9344MHz
+25ppm at the stop mode.
4-3-3 Focus gain adjustment
1. Apply 1.07kHz/10Vp-p (When using MCD-111) or
1.05kHz/10Vp-p (When using YEDS-18) to TP1 pin 1
(FE2) from an external OSC via 100k Q resistor.
2. Play the track 4, and adjust V402(F.GAIN) so that
phase at TP1 pin 2 (FE1) is 90° with respect to that
of the external OSC.
Oscillator Oscilloscope
4-3-2 JO» TARR
1. SERVO PCBO P411 ARRAY YY —EERET SD
2. AEILIRGE CO JARED 16.9344MHz + 25ppm ik SHKII
C55 SHEETS.
4-3-3974 —-HA2T4 VRB
1. 8B OSC KY 100k Q OHMESP LT 1.07kHz/10Vp-p
(MCD~ 111 le CHSERS) ¥ 1k 1.05kHz/ 10Vp~p (YEDS- 18
CHE) OSE TPIOLBEY (FEZ) ANTS.
2. SHEE L. TP1O 2B Y (FEL) EMMBOSC EON
290° (AKG V4O2 (F.GAIN) HESS.
SERVO PCB
Fig. 4-3
4-3-4 Tracking gain adjustment
1, Apply 1.30kHz/10Vp-p (When using MCD-111) or
"1.,09kHz/10Vp-p (When using YEDS-18) to TP1 pin 3
(TE2) from an external OSC via 100k Q resistor.
2. Play the track 4, and adjust V401(T.GAIN) so that
phase at TP1 pin 4 (TE1) is 90° with respect to that
of the external OSC.
Oscillator Oscilloscope
4-3-4 boy t UTS VRE
1. ABB OSC KY 100k Q OIE UT 1.30kHz/ 10Vp-p
(MCD-111 it CHER ¥ lt 1.09kHz/ 10Vp-p (YEDS-18
CHR) OF SE TPIOSBEY(TE2)KANTS.
2, 4HHA REL TP1 O48 Y (TEL) EAB OSC E Ott
DX90° WHSZHAIV4Ot CT.GAIN) &S9ETS,
[i] FE2] SERVO PCB
Fig. 4-4

| VRDS-T1
PARTS LIST SECTION
NOTES
@PC boards shown are viewed from parts side.
@ Parts marked with * require longer delivery time.
@ The parts with no reference number or no parts number in the
exploded views are not supplied.
@As regards the resistors and capacitors, refer to the circuit
diagrams contained in this manual.
@ A\ Paris marked with this sign are safety critical components.
They must be replaced with identical components - refer to
the appropriate parts list and ensure exact replacement.
@ Parts of [ ] mark can be used only with the version designated.
[J]: JAPAN (US]:U.S. A. [C]:CANADA [GE] :GENERAL EXPORT
TE}:EUROPE [UK] :U. K.
VRDS-T1 (N):Gold Version VRDS-T1(B) :Black Version
zt
OTUY AREIBRHORAN THIET.
OKHORMISMAMNSFODVUET.
BODUOCTH< KAI.
ODBMICHEOG\ BARUABORW AD mISRRLECA.
OREOR, TVFYU-SRRLTHY ET.
BUERRESRLT <ALL
CAMERESERACT o
BHAT SRRLUSS 4 7» TIEOMMERAL TK RSI
etme
[J]: JAPAN CUS] :U.S. A. [C]: CANADA [GE]:GENERAL EXPORT
[E]: EUROPE [UK] :U. K.
VRDS-T1 (N) :Gold Version VRDS-T1(B):Bl ack Version

VRDS-T1
5 EXPLODED VIEWS AND PARTS LIST
SHERI LIN—Y UA
EXPLODED VIEW-1

EXPLODED VIEW-1
| VRDS-T1
REF. NO. PARTS NO. DESCRIPTION REMARKS
1-1 *5801572300 BONNET (7) [J, GE} VRDS-T1 (ND
*5801572500
BONNET
(7~B)
[US,
C,
GE,
E,
UK}
VRDS-T1
(B)
1- 2 *5801532500 BOLT, HEXAGON SOCKET B [J, GE] VRDS-T1 (N)
*5801539500
BOLT,
HEXAGON
SOCKET
B(BLK)
(US,
C,
GE,
E,
UK]
VRDS-T1(B)
1- 3 *5801532900 COLLAR
1- 4 5332031900 EARTH TERMINAL
1- 5 *5801572100 CENTER CHASSIS ANGLE (R)
1- 6 *5801598300 RUBBER SHEET, 125X125 0. 57
1- 7 *5801533202 TOP CHASSIS
1- 8 *M00006700A REAR PANEL (CU) [J, E, UK]
*MO0006800A REAR PANEL (CU) [US, C, GE]
1- 9 *E95001000A VOLTAGE SEL PCB-ASSY L[US, C, GE]
1-10 AX 5320063300 POWER TRANSFORMER
1-11 *E95000900A POWER PCB ASSY [J]
*E95000903A POWER PCB ASSY [US, C, GE]
*E95000904A POWER PCB ASSY [E]
*EQ95000905A POWER PCB ASSY [UK]
1-12 *5801406000 TRANS BASE
1-13 AX. 5317005600 BUSHING, 2272 [EXCEPT GE]
AX 5317003400 BUSHING, 2271 [GE]
1-14 AX 5350018400 AC CORD [J]
AX 5350019100 AC CORD, CSA 3-WIRE [US, ¢, GE]
A\ 5350019300 AC CORD, UL SPT-2 [GE]
A\ 5128089000 AC CORD, CLASS 1 [E]
A\ 5350019000 AC CORD, BS 3-WIRE [UK]
1-15 *M00007000A POWER PCB BRACKET
1-16 *5801531900 PCB ANGLE
1-17 *M00006900A POWER SW ROD
1-18 *5801532001 CENTER CHASSIS
1-19 *5801531601 CHASSIS ANGLE (B)
1-20 *E95000200A SERVO PCB ASSY
1-21
*MQ0007700A
FRONT PANEL
ASSY
[J,
GE]
VRDS-T1
(N)
*M00007701A
FRONT
PANEL
ASSY
(B)
[US,
C,
GE,
E,
UK]
VRDS-T1
(B)
1-21-a 5801530500 CAP ESCUTCHEON
1-21-b 5801530801 BUTTON CAP (ST)
1-21-¢» 5801530601 BUTTON CAP (PL)
1-21-d 5801530701 BUTTON CAP (PA)
1-22
5801531001
BUTTON
CAP
(P)
ASSY
(J,
GE]
VRDS-T1
CN)
9801539601 BUTTON CAP (P) BLK ASSY [US, C, GE, E, UK] VRDS-T1 (B)
-23 5801070200 POWER SPRING
1-24 *5801532700 FL COVER
1-25
5801531101
BUTTON
CAP
(0/C)
ASSY
LJ,
GE]
VRDS-T1
(N)
5801539701 | BUTTON CAP (O/C) BLK ASSY [US, C, GE, E, UK] VRDS-TI (B)
1-26 *5801532200 FRONT CHASSIS
1-27 *E95000300A KEY PCB ASSY
1-28 *5801511501 MAIN CHASSIS (CU)
1-29 5801414900 FOOT ASSY
1-30 *5801571900 MECHA. BASE
1-31
*5783813006
©
SCREW,
BIND
S-TITE
M3X6
(ZN
BL)
1-32 *5783033006 SCREW, BIND S-TITE M3X6
1-33
*5783543008
SCREW,
BIND
P-TITE
M3X8
(NI
BLK)
1-34 *5783244020 © SCREW, BIND S-TITE SEMS-F M4Xx20
1-35 *5786713000 HARNESS CLIP
1-36 *5786700600 EARTH LUG [US, C, GE, E, UK]
1-37
*5785124000
WASHER,
TOOTHED
LOCK
[US,
C,
GE,
E,
UK]
1-38 *5783034006 SCREW, BIND S-TITE M4X6
1-39 *5780023006 © SCREW, BIND M3X6 (NI BLK)
1-40 *5783034020 SCREW, BIND S-TITE M4Xx20
1-41 #5783693006 SCREW, BIND S-TITE M3X6 (N! BLK)
1-42 #5 783783006
SCREW, BIND B-TITE M3X6 (CU)

VRDS-T1
EXPLODED VIEW-2
Oey
TY
©
®
©
(@)
10