Teac PD-135 User manual

TEAC.
SERVICE MANUAL
Compact Disc Player
COMPACT
olise
DIGITAL AUDIO
Effective;
Octover
1987
5704037300

SPECIFICATIONS
System
Compact
disc
digital
audio
system
AUDIO CHARACTERISTICS
Frequency
Response
5H2-20kHz,
+
1dB
Harmonic
Distortion
Less
than
0.007%
(1kHz)
S/W Ratio
More than 90dB
Wow
and
Flutter
Quartz
precision
Channel
Separation
More
than
80:B
(1kHz)
Output
Voltage
max.
2Vrms
FUNCTIONS
Instant Program Selection
Sequential, with MUSIC SKIP
p> pei andid< buttons
Index Sequential, with SEARCH/INDEX » Pb and
SEARCH/INDEX << buttons (Stop mode only)
Forward/back Forward/back with sound
Program Functions 16 selections
Repeat All selections all programmed selections
Reset Press STOP button
Pause Each selection
Disc Loading Motor driven horizontal loading
DIGITAL SIGNAL PROCESSING
Optical Pickup 3-beam laser
Error Correction CIRC
Sampling Frequency 44.1kHz
D/A Conversion 16-bit linear
Filter Digital filter + (4-pole LC filter)
GENERAL
Power Source 120V, BOHz (U.S.A/CANADA)
220V, 50Hz (EUROPE)
240V, 50Hz (AUSTRALIA)
110/220V, 50/60Hz (GENERAL EXPORT)
9 Watts
Power Consumption
Dimensions (W x H xD) 435 85.5 x 290mm
Weight
3.5kg

FUNCTIONAL BLOCK DIAGRAM
wor
¥SN3IdNOD
3SVHd
AS~
(WN)
¥OLOW
370NIaS
=
IANO OD ONINDVEL
rl
PETEeL, [ese]
OUD
YORLNOD
NNBLSAS
HOLYSN3dNOD 3SVHd
wOIvYaNa9
HQUIMS,
TNS
TEA
D04
JOVILN
43L0dNOD
Cuow
2ONV Ive
snoos
waNaHD
JOULNOD
OD
SIS
VHANIIG
BOL
VEvdsS:
3002-8NS
HOLIMS:
7OuLNOD
ONO VEL
0193130 SSOWD OUIZ
snoos
NOUDIOD
@NOLIILI0
2200
w4LH3ANOD vO ;
Soto
~
WISABD
ed~10 Wes ah
9019 0
woo
SNI04
WOD
ONIN
WHL
521 gl
1@
a
HOLYSN34NOD
'
to
3SVH
dv
43Sv7
cane)

SAFETY CERTIFICATION
This Compact Disc Player is made and tested to meet exacting safety standards.
Laser Diode Properties
Material; Ga-Al-As
Wavelength: 755-815nm (25°C)
Laser Output: Continuous Wave max. 0.7mW
CAUTION - INVISIBLE LASER RADIATION WHEN OPEN AND
INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM.
VORSICHT! UNSICHTBARE LASERSTRAHLUNG TRITT AUS
WENN DECKEL GEOFFNET UND WENN
SICHERHEITSVERRIEGELUNG UBERBRUCKT IST.
NICHT DEM STRAHL AUSSETZEN!
\ARNING- QSYNLIG LASERSTRALNING NAR DENNA DEL
AR OPPNAD OCH SPARR AR URKOPPLAD.
STRALEN AR FARLKG.
ADVARSEL- USYNLIG LASERSTRALING VED ABNING. NAR
SIKKERHEOSAFBRYDERE ER UDE AF FUNKTION.
UNDGA UODSAETTELSE FOR STRALING.
CLASS 1 LASER PRODUCT
CAUTION
—
USE
OF
CONTROLS
OR
ADJUSTMENTS
OR
PERFORMANCE
OF
PROCEDURES
OTHER
THAN
THOSE
SPECIFIED
HEREIN
MAY
RESULT
IN
HAZARDOUS
RADIATION EXPOSURE.
THE COMPACT DISC PLAYER SHOULD NOT BE ADJUSTED OR REPAIRED BY ANYONE EXCEPT QUALIFIED
SERVICE PERSONNEL.
LASER BEAM RADIATION SPOT
Optical Pickup Properties
Material: Ga-Al-As
Wavelength: 790“um
Output Power: Max. 1.8mW
Radiant Power: Max. 8uW(Class_ I)
Laser Beam Radiation

CABINET & CHASSIS EXPLODED VIEW

EXPLODED VIEW -l
REF .NO. PARTS NO.
CA *9A00 765600
*9A0082 2300
CA *9A00 766300
*9A0082 2900
CA 9A00 765800
9A0082 2500
CA 9A00 765900
9A0082 2600
CA 9A00 766000
9A0082 2700
CA 9A00 765700
9A00822400
CA 9A00 766100
9A0082 2800
CA *9A00181500
9A00181700
*9A00179200
*9A00179800
*9A00169900
*9A001 70100
*9A00170200
*9A004 16400
*9A0 0442300
*9A00! 70500
*9A00 170600
*57605 18700
AN *9A001 49600
A *9A001 82200
*9A00 769700
*9A00182500
*9A00 182600
A *576 1246800
A *9A0 04 43300
A *9A00767400
A *9A00770100
9A00767500
9A00 769300
9A00769600
9A00770200
9A00769800
*9A00768500
*9A007685 10
*9A00 768700
*9A00768600
*9A00 767100
*9A00766700
*9A00 767000
*9A00171700
*9A00767200
*9A00181 400
*9A00 767300
(US]:U.S.A.
[A}]:AUSTRALIA
[C1:CANADA
DESCRIPTION REMARKS
ESCUTCHEON DIAL
ESCUTCHEON DIAL [SILVER]
DECORATE PLATE DIAL
DECORATE PLATE DIAL [SILVER]
KNOB EJECT
KNOB EJECT [SILVER]
KNOB A
KNOB A [SILVER]
KNOB B
KNOB B [SILVER]
KNOB C
KNOB C [SILVER]
KNOB POWER
KNOB POWER [SILVER]
PLATE PAD SWITCH [GE]
SLIDE SWITCH 3P [GE]
COVER
SCREW PAN HD.TPG-B M3X8
PLATE BOTTOM
LEG
METAL MOUNT COVER
CHASSIS MAIN [US,C,E,A]
CHASSIS MAIN [GE]
SHAFT
CUSHION RUBBER
SHAFT
BUSHING [US,C,GE)
BUSHING [E,A]
LUG GROUND [US,E]
MOUNT PCB [A]
SHEET [A]
POWER
POWER
POWER
POWER
CORD [GE]
CORD [E]
CORD [US,C}
CORD [A]
POWER
POWER
POWER
POWER
TRANS [US,C]
TRANS [GE]
TRANS [€]
TRANS [AJ
C. CERAMIC 0.022/50V [US,E]}
MAIN PCB ASSY [US,C]
MAIN PCB ASSY [GE,E,A]
POWER SWITCH PCB ASSY
CONTROL PCB ASSY
SCREW
SCREW
SCREW
SCREW
SCREW
S-TPG BRZ M3X8
S-TPG BRZ M3X8
S-TPG BIN M4xX10
TRANSIT
S-TPG BRZ M3X10
SCREW
SCREW
PAN M3x8 [GE]
S-TPG BRZ M3X14
{GE]:GENERAL EXPORT [&]:EUROPE
Parts marked with *require fonger delivery time.

MECHANISM EXPLODED VIEW

EXPLODED VIEW -2
REF NO. PARTS NO.
9A00567000
9A00171900
9A00172000
9A00172100
*9A001 72200
Ul WN —
*5 760707700
*9A00172300
9A00172600
*9A00172800
*9A001 73000
COON D
VW *9A00 767800
*9A00823 300
13 *9A00 173500
15 *9A00173700
16 *9A00 173800
*9A001 73900
9A00 174000
9A001 74100
9A00174200
9A00174300
9A00174 400
*9A00174500
*9A00 174600
*9A001 74700
*9A00 175300
*9A001 75400
*9A001 75500
*9A001 75600
9A00175700
*9A00175800
*9A00 175900
*9A001 76000
*9A001 76100
*9A001 76200
*9A00 1 76300
9A00823 100
*9A00767900
*9A00768000
*9A00 768 100
*9A00768200
*9A00768300
DESCRIPTION
PICK-UP ASSY
LEAF SWITCH
LEAF SWITCH
MOTOR
CHASSIS ASSY
GEAR MOTOR ASSY
SLIDE BASE PICK-UP ASSY T
LEVER LOCK ASSY
TABLE LOAD
TABLE LOAD [SILVER]
HOLDER DISK
SET SCREW V-CONE 2X4
SCREW WASHER
PAD DISK
TURNTABLE
GEAR PINION
GEAR PICK-UP
GEAR LOAD
GEAR CAM
SCREW (B TITE SEMS)
SCREW (B TITE SEMS) Z
FLAP DISK CRAMP
SLIDE EJECT
LEVER STOP
LEVER HOLD DISK RIGHT
LEVER HOLD DISK LEFT
SHAFT PICK-UP
BALL
ROLLER TABLE
SPRING LEVER
SPRING LEVER
SPRING LEVER
SPRING PLATE
SPRING SLIDE
SPRING LEVER
LOAD
RIGHT
LEFT
STOP
EJECT
LOCK
CD MECHA ASSY 86
SCREW S-TPG BIN M2X6
SCREW BIN M2.
6X4
SCREW S-TPG BRZ M3X6
SCREW PAN PCS M1.7X2.5
SCREW PAN PCS MI.7X2
REMARKS
Z
INCLUDED ACCESORIES
REF .NO. PARTS NO.
*9A00768800
*9A0078 | 000
*9A00 768900
DESCRIPTION
REMARKS
OWNERS MANUAL [C,GE,E,A]
OWNERS MANUAL [US]
PLUG CORD
{US1:U.S.A. [C]:CANADA
[A]:AUSTRALIA
{GE]:GENERAL EXPORT [€]:EUROPE
Parts marked with *require longer delivery time.

ADJUSTMENT PROCEDURES
CAUTION:
Avoid eye exposure to invisible laser beam which is emitted from
laser pickup.
PRECAUTIONS REGARDING ADJUSTMENT
e
Adjustment is performed in the indicated order.
e@ When adjustment is made for one item, check the other items
which follow.
@ The laser pick-up has already been precisely adjusted. Do not
touch its mounting screws or controls.
Laser power control knob
— Do not adjust.
@ When the diffraction grid is adjusted, remove the mechanism.
It is convenient to place an insulating panel on top of the chassis
and then to place the mechanism on top of this. (The wires are
connected.)
Insulator Board
(wood, plastic etc.)
® Refer to the adjustment diagram for the test points and adjust-
ment controls.
The ground point for the measurement equipment is the test
point indicated as GND.
REQUIRED EQUIPMENTS
DC Voltmeter
Dualtrace Oscilloscope
Frequency Counter
Signal Generator
Plastic Screwdriver
Diffraction Grating Adjustment Jig
Test Disc (SONY:YEDS4)
CHECKING FOCUS ERROR SIGNAL
Checking the focus error signal of the pick-up allows for an evalu-
ation of the pick-up. Be sure this is carried out before repair.
1.
2.
Turn on the power and set the unit to the STOP mode.
Connect an oscilloscope between test pin FE of connector
CN7 and test pin GND (Set the time axis to 0.5 seconds/
division.)
. Connect test pin GND to the collector of Q125.
4. Press the OPEN/CLOSE button and place the test disk YEDS4
on the table load. Press the OPEN/CLOSE button again.
The waveform shown below is displayed six times on the
oscilloscope when the table load closes. Check that the p-p
voltage is about 2.5V and that the top and bottom of the
waveform are symmetrical.
Repeated six times
Hee c@en es
i 1
' ' ' ' 4
1
1
1
1 1 1
1 1
i 1 4 ‘ 1 '
i 1
'
‘ t
' ‘
(When recorded on a memory scope)
l
'
4
1
|
*p-p voltage of 2.5V
*+ and — voltage roughly same

ADJUSTMENT PROCEDURES (continuea)
6. The waveform appears again if the OPEN/CLOSE button is
pressed again. This allows for confirmation to be made. The
pick-up is faulty if confirmation cannot be made.
SETTING OF INITIAL POSITION OF VOLUME
The variable resistors are set to the following initial positions.
P102 (FOCUS OFFSET) ......... Mechanica! center
P103 (FOCUS GAIN) ............. Mechanical center
P104 (TRACKING GAIN) ......... Mechanical center
P105 (TRACKING OFFSET) ...Mechanical center
P106 (E/F BALANCE) .............. Mechanical center
FREE RUN FREQUENCY ADJUSTMENT
1. Turn on the power and set the unit to the STOP mode.
2. Connect the frequency counter between test pins VCO and
GND (use probes).
3. Short test pins EFM and GND.
4. Rotate the core of the PLL coil (T101) with a plastic screw-
driver so that the frequency counter indicates 4.3218+ 10KHz.
FOCUS OFFSET ADJUSTMENT
1. Turn on the power and set the unit to the STOP mode.
2. Short test pins FON and GND, and connect a DC voltmeter
between test pins FC and GND.
3. Unload the test disc and adjust P102 so that indication of the
DC voltmeter is OV+50mV.
NOTE:
This adjustment should be made again after the adjustment
of Tracking Gain.
TRACKING OFFSET ADJUSTMENT
1.. Turn on the power and set the unit to the STOP mode.
2. Short test pins TON and GND and connect the DC voltmeter
between test pins TC and GND. ;
3. Unload the test disc and adjust P105 so that indication of the
DC voltmeter is OV+50mV.
NOTE:
This adjustment should be made again after the adjustment
of Tracking Gain.
ADJUSTMENT OF DIFFRACTION GRID
The adjustment cannot be made with this unit. When the adjust-
ment is necessary, replace the mechanism including laser pick-up
with a new one, or replace the pick-up with an already adjusted
one (forwarded by us).
| NOTE:
When the pick-up is replaced, it must be replaced as a unit.
Never replace only laser didde.
ADJUSTMENT OF PICK-UP ANGLE
1. Remove the table load.
2. Directly mount test disc YEDS4 on the turntable.
3. Turn on the power and play back the fourth selection.
4. Connect the oscilloscope between test pin HF and test pin
GND. Monitor the waveform of HF and rotate the angle
adjustment screw so that the waveform is at its maximum.
Angle
Adjustment Screw
E-F BALANCE ADJUSTMENT
1. Short test pins DO and E3, and connect an oscilloscope and a
DC voltmeter to test pins TE and GND through the low-pass
filter.
2. Mount test disc YEDS4 and set the player to the playback
mode. Load +5V to test pin TON and turn off the tracking
servo.
3. Adjust P106 so that indication of the DC voltmeter is within
+5mvV.

ADJUSTMENT PROCEDURES ccontinuea)
22K
TE
: 22K
DC ©
Voltmeter
220/16 DC Voltmeter
ms and
GND me Oscilloscope
220/16
GND
Oscilloscope
3. Turn on the power and play back the first selection on test
disk YEDS4.
4. Readjust the height of the turntable if the reading on the DC
CONFIRMING JITTER voltmeter is not in the range of 0V+0.35V. (Increase: the
This procedure can be omitted in the case that no jitter counter is height of the turntable when the voltmeter reading is positive,
equipped. and decrease it when negative.)
1. As same in the adjustment of the pickup angle, play the fourth
tune of the YEDS4.
2. Connecting the jitter counter to the test point EFM, make
sure that the value of 3T is less than 25nSec. ADJUSTMENT OF FOCUS/TRACKING GAIN
The measurement circuit shown below is necessary for accurate
3. In the case of 25nSec or more, adjust again the Pick-up Angle adjustement of the focus and tracking gain. If this circuit cannot
and adjust P102. be made, make adjustments using the simplified procedure.
ADJUSTMENT OF TURNTABLE HEIGHT Simp lededlustment procedure
Thi : de'when th : ides @ Focus gain adjustment
is
adjustment
must
be
made
when
the
motor
is
replaced.
P103
is
set
to
a
position
30°
from
its
mechanical
center
as
shown in the diagram below.
30°
LLLLCLELLLALUUSLELLLLLELLLLLSLELLLLLUILLLELELEL EET LTTLLLEET TTT e@ Tracking gain adjustment
: P104 is set to a position 30° from its mechanical center as
shown in the diagram below.
2. Connect test pin FC to a DC voltmeter and oscilloscope
through the low-pass filter.
30°
-19-
1. Attach the turntable so that its top surface is 22.75mm from
the top of the chassis.
22.75mm

6
Main P.C.B. :
CN2 “3
2
t
Tracking Gain:
Focus Gain} ~. e4
6 ee ae
Pick-up
CN2 3
2
1
ADJUSTMENT
PROCEDURES
ccontinuea)
5 Signal
Generator
10K 0047 —
10K 0.0047
i Dualtrace
Oscilloscope
@ Remove connector CN2 from the pick-up and connect the
measurement circuit between the PCB and pick-up.
e@ The IC used is TA7256P
e VR contro! 2k0-B shorts IN and SG, 1kHz 1Vp-p is supplied
from the signal generator, and adjustment is made for
minimum output from OUT.
Precise adjustment procedure
1.
Focus gain adjustment
Connect the measurement circuit shown above, turn on the
power, and mount the test disk YEDS4.
Playback the first selection on the test disk, and apply a 950 Hz
0.5Vp-p signal from the signal generator.
. Observe the resurge waveforms on the oscilloscipe, and adjust
P103 so that the phase difference of outputs X and Y from the
measurement circuit is 90°.
-/Jj-
Tracking gain adjustment
. Adjustment is made in the same manner as for focus gain.
The input from the frequency generator is set to 950Hz 0.5Vp-p,
and P104 is adjusted so that the phase difference is 90°.

BOARD ALIGNMENT POINTS
Cc
p
EE
oy
ee
ae
ea
Sake
ae
~12-

SAFETY INTERLOCK
The Digital Compact Disc Player reads the disc signal by
' detecting the laser beam. It must be avoided for the human body
to directly receive the beam. Especially human eyes are badly
affected by the beam. Therefore, the unit is equipped with an
interlock to prevent the unnecessary laser outputs.
The laser outputs are controlled by the injection or cutoff of the
constant voltage source to the laser diode with Pin 23 of IC 103
(LC6523H). When Pin 23 is in “L” (Low) level, the laser emits the
beam. When Pin 23 is in “H” (High) level, the laser does not emit
the beam.
Pin 23 is set in “H” level when the unit is loaded with the disc
and it reads the index signals or when the unit is set in the play
mode after that. When the unit reads the index signals and the
:
IC103
W103
LOADING
LIMIT
LC6523H
SWITCH
PLAY
SWITCH
~13-
following two conditions are met, the laser emits the beam.
1) When the Loading Limit Switch is set in “CLOSE” side. (The
disc tray is closed.)
2) The pickup is located at the area of the minimum internal
circumference.
After the above conditions are met and the index signals have
been read, the laser emits the beam when the following two
conditions are met.
1) When the PLAY button is pressed.
2) When the PLAY indicator is ON.
CONSTANT VOLTAGE
POWER SUPPLY
AUTOMATIC
LASER
POWER
CONTROL.
AC POWER SOURCE
D512
DISPLAY

NOTES:
|. As regards the resistors and capacitors, refer to the circuit diagrams and the PCB ass'y
drawings included jin this brochure.
2. Parts marked with
this sign are safety critical cmponents. They must always be replaced
with Identical components - refer to the appropriate parts list and ensure exact replacement.
MAIN PCB ASSY MAIN PCB ASSY
REF .NO. PARTS NO. DESCRIPTION REFNO. PARTS NO. DESCRIPTION
*9A00768500 MAIN PCB ASSY {US,C] 9A00187900 PLUG 8P
*9A00768510 MAIN PCB ASSY IGE,E,A] 9A00188000 PLUG 6P
*9A00770300 MAIN PCB 9A00188100 PLUG 12P
DIOI,102 9A00774800 DIODE GMAO|~-BT 9A00198000 CRYSTAL
DIi03,104 9GA00774900 DIODE 0S442-BT 9A00779200 CONNECTOR IP ASSY
DIO5-111 9A00774800 DIODE GMAO|-BT 9A00780000 FUSE T500MA [GE,E,A]
DIt2 9A00774900 DIODE DS442-BT *¥9A00198400 FUSE CLIP
DI 13 9A00775000 VARA. DIODE SVC2! 1SP *9A00770400 COVER SEVER’
DII4-117 9A00774800 DIODE GMAO!-BT *9A00770500 PLATE HEAT SINK
D118 9A00775100 ZENER DIODE GZA7.5X *5 760526600 PLATE HEAT SINK
D119,120 9A00775200 ZENER DIODE GZA6.8X *9A00183000 PIN JACK 2P
DI21-124 9A00775300 DIODE MPGO6B-G3 *5 761259300 WIRE WRAP TERMINAL
DI25 9A00775400 ZENER DIODE GZA2.4X-BT
1Cclol 9A00775600 IC XC488A0
1C102 9A00775700 {C YM3805
1C103 9A00775800 IC LC6523H-3043
1C104,107 9A00775900 IC NJM2068S-D CONTROL PCB ASSY
1C105 9A00776000 IC YM3015
1C106 9A00776100 IC CXK5816M-}5L REF .NO. PARTS NO. DESCRIPTION
1C108,109 9A00775900 IC NJM2068S-D
*9A00768600 CONTROL PCB ASSY
1cl10 9A00776800 IC 7256P *9A00779400 CONTROL PCB
ICIII- 9A00776900 IC L78M05 D501-508 9A00774900 DIODE DS442-BT
ICL t2 9A00777100 IC L79MO5 D509 9400779600 LED SLR-54MC3
Q101,102 9A00777500 TRANSISTOR 2SC536-F-NP D510,51! 9A00779700 LED SLR-54VC3
QI103,105 9A00777600 TRANSISTOR 2S01227-M
D512 9A00779800 LED LB402DA
Q104,106 9A00777700 TRANSISTOR 2SB911-M Q501,502 9A00778100 TRANSISTOR 2SB698-E
Q107,108 9A00777500 TRANSISTOR 2SC536-F-NP $501-508 9A00438700 TACT SWITCH
Qltl,!t2 9A00777500 TRANSISTOR 2SC536-F-NP CN 6 9A00779500 CONECTOR 8P ASSY
QI113,117 9A00777800 TRANSISTOR 2SA608-E-NP CN 7 9A00780200 CONECTOR I IP ASSY
Qi14,115 9A00777500 TRANSISTOR 2SC536-F-NP
QI16,1!18 9A00777900 TRANSISTOR 2SD734-E-K
QI19 9A00778000 TRANSISTOR 2SD612-E .
Q120 9A00778100 TRANSISTOR 2SB698-E
QI21-125 9A00777500 TRANSISTOR 2SC536-F-NP POWER SWITCH PCB ASSY
C167,168 9A00774000 C. ELEC 2200MF/16V
REFNO. PARTS NO. DESCRIPTION
R216 9A00193400 R. FUSEIBLE 10 1/2W [US]
R216 9A00780100 R. FUSEIBLE 4.7 |/4W [GE] *9A00768700 POWER SWITCH PCB ASSY
R219,221 9A00193400 R. FUSEIBLE 10 !/2W [US] *9A007 79900 POWER PCB
R219, 22) 9A00780100 R. FUSEIBLE 4.7 |/4W [GE] 4\9A00201500 POWER SWITCH
RBIOI 9A00779000 RM7 103J ZX9A00201600 SPARK KILLER 0.0 IMF/400V
*5760663000 EC TERMINAL IP
P1!02,105 9A00777300 POTENTIOMETER 20K(B)
P103,104 9A00777400 POTENTIOMETER 100K(B) *5761259300 WIRE WRAP TERMINAL
P106 9A00777400 POTENTIOMETER JOOK(B)
TIO1 9A00191500 COIL OSC
T!102,103 9A00779100 AF FILTER
{US]:U.S.A. [C1]:CANADA [IGE]:GENERAL EXPORT (€]:EUROPE
[AJ:AUSTRALIA
Parts marked with require longer delivery time.
~14-

MAIN P.C.BOARD
(BOTTOM VIEW)
~15-
—16-

POINT TO POINT WIRING DIAGRAM
EUROPE
POWER TRANS e
Fs | axed 6
&
Ee
.
} \ & : | co —_
if \ “Ss ‘ BK RE .
BK :
a OR ee OR RE :
MAIN P.C.B.
AC220V
50Hz POWER PC.B.
Zz
toa —
zur i
conse Gam Gu GmeD cus emo Gum com Game comme come cm om cum om a >
r
Bi
if
\ i SW103 :
| i LOADING
i i LIMIT
\ | SWITCH
| PICK UP | swi02
Peers BH | ‘Sr ee =
i
o(S(o[@
|
SWITCH
Gy
z
| L
! 3 :
=
—
i]
a
| —=oY SR i
I RE
i *BK= |
| BK=-@ BL aut
1 i
a |
BN A Se SR a a se a cee aa aac a ad
mMio2 ~BK
SPINDLE MOTOR
[O| 8
(= |
: i f :
M101 A oe
LID / PICK UP HEAD -
MOTOR
CONTROL P.C.B.
77 =
—18-

U.S.A. & CANADA
POWER TRANS .
: ahi
ge
oad
RE
BK
RE
AC120V
60Hz
AUSTRALIA
POWER TRANS ©
: ane
A
4
RE
BK
RE
AC240V
50Hz
GENERAL EXPORT
VOLTAGE SELECTOR
220V 110V
POWER TRANS ®
FS ax,
re,
et
GY: RE
RK! BK
OR RE
AC220V/110V
50/60Hz
—79-

|e ca
POWER SWITCH P.C.BOARD
(BOTTOM VIEW)
F10084300
CONTROL P.C.BOARD
(BOTTOM VIEW)
-20-

IC & TRANSISTOR LEAD IDENTIFICATION
2SA608
2SB698
28C536
8
280734 1
28C3400
28D1012
NJM2068/FRONT/SIDE VIEWS
28A937
TERMINAL NAME
B— BASE
Cc — COLLECTOR
—— EMITTER
NJM2068 BLOCK DIAGRAM
y=