Sanyo GCD2000 User manual

Brand: Sanyo

Model: GCD2000

Category: CD players

Type: User manual

FILE NO.

Service Manual

Specifications

Tuner section

Fre~uency range . . . . .

Sensitivity . . . . . . . . . . . .

Cassette deck section

Track system . . . . . . . . .

Frequency response . . . .

Signal to noise ratio . . . .

Wow and flutter . . . . . . .

Tape speed . . . . . . . . . .

Fast forward /

rewind time

CD player section

Channels . . . . . . . . . . . .

Sampling frequency . . . .

Digital filter . . . . . . . . . . .

D / A conversion . . . . . . .

Pickup . . . . . . . . . . . . . .

Frequency response . . . .

Signal to noise ratio . . . .

Total Harmonic Distortion

Wow and flutter . . . . . . .

CD Changer

Stereo Music System

FM : 87.5-108.0 MHz (50 kHz

steps)

M.W :531 -1,701 kHz (9 kHz

steps)

FM : 20.7dBf (mono)

----

AM :800 uV/m (AM Loop Antenna)

AC bias, .4-track 2-channel stereo

100-12,500

fiz -

50 dB

0.1 50/0 (WRMS)

1-7/8 i.p.s. (4.75 cmk.ec..)

Approx. 110 sec.. (C-60)

2-channel stereo

44.1 kHz

8 x Over sampling

Two 16-bit linear D/A converters

Optical 3-beam semiconductor

laser

20-20,000 Hz

96 dB

0.04’% (1 kHz)

Undetectable

Specification sui]ject to change without notice.

.. -.—.

..———..

..___

PRODUCT CODE

129 385-04

Amplifier section

Output power . . . . . . . .

Max. 3.5w x

distortion)

2 (at 8 ohms, 107o

Input sensitivity /

impedance -. .

VIDEO : 300mV / 50k ohms

Graphic equalizer -.... f6 dB (100

tiz, 1 kHz, 10 kHz)

Bass expander . . . . . . .

+8 dB (100

f-fz)

Output impedance . . . .

SPEAKERS : 8 ohms

HEADPHONES : 8 ohms

General section

Power requirements . . . AC : 230-240V, 50HZ

Power consumption . . . 31

Dimensions (approx.) . .

14.2” (W)

X 13.9” (H) X 15.7” (D)

(360 x 353 x 399 mm)

Weight(approx.) . . . . . . 17.1 Ibs (7.75 Kg)

RB-X2000 remote controller

Power source . . . . . . .

DC : 3 V 6’SUM-3/AAfR6’s battery

Dimensions (approx.) . .

1X62 (W)

X 6.9” (H) X 0.7” (D)

(41 x 175 x 18mm)

Weight(approx.) . . . . . .

2.0 oz. (63g) (without batteries)

REFERENCE

No. SM580037

LASER BEAM SAFETY PRECAUTIONS (CD) —

Do not look directly at the laser beam coming from the

Structural Safety Interlock

pickup or allow it to strike against

your fingers, skin,

This model has a disc chuck lever and top lid. This disc

etc.

not apply power if there is a broken part in the laser

chuck lever and top lid prevent to expose the laser beam

for users.

output section of the pickup.

INVISIBLE LASER RADIATION EXPOSURE TO BEAM IS DANGEROUS CLASS 1 LASER PRODUCT

OUTPUT POWER : 0.6 mW MAX WAVELENGTH : 790 nm

..-

‘--- “u!

E!Eiii3“

4ANDLING THE PICKUP

,’,

. . .

Shipping and storage cautions

The pickup must be stored in a conductive bag

until immediately prior to its use.

Do not drop it or subject it to impacts.

-.— .- .

Repair cautions

. .. ..

. .

When handling the pickup, be careful not to give it

undue

force or shock by your hands. Otherwise the

pickup may malfunction or the PCB may be cracked.

The pickup which has been minutely adjusted before

shipment as one part. Never touch and move the

adjusting points and setscrews of the pickup unless

otherwise described in the item of adjustment to

avoid damage.

BEFORE REPAIRING THE CD PLAYER (CD)—

A strong magnet is used in the pickup.

Do not bring a magnet or other magnetized object

near to it.

Cleaning the lens

* If dust gets on the lens, clean it away by using an

air brush such as used for a camera lens.

● The lens is held in place by a spring.

If the center of the lens is dirty, carefully clean” it

using cotton swab moistened with isopropylalcohol.

Since special coating is made on the surface of the

lens which is made of plastics, do not use other

kind of alcohol and cleaning fluid to prevent

damage to the lens. Also, be careful not to bend

the lens spring when cleaning.

.. ...

.:..

.......

.,.

Preparations

Many ICS, LSI and the Pickup (laser diode) are

used in the compact disc player. These

components are sensitive to static electricity, and

might be damaged by static electricity or high

voltage, so particular care should be taken

regarding this point.

Many precision components and the lens are used in

the pickup.

Never attempt to make repairs, or to store parts,

where the temperature or humidity is high, where

magnetism is strong, or where there is much dust.

2. Notes regarding repairs

a. Be sure to first disconnect the power plug before

attempting to replace any component.

b. All tools, instruments, etc., used for measuring must

be grounded.

Grounding can be accomplished by using a

conductive metal sheet on the work bench.

c. To prevent AV leakage of the soldering iron, ground

its metal part.

d. Repair personnel must be grounded.

!EFORE USE OR TRANSPORTATION

Before use

1. Carefully unpack the unit 3. Remove the sheet and tape which secures the

2. Remove all packing material from around the unit.

carousel.

,..

4. Attach the dust Cover.

●

-1-

BEFORE USE OR TRANSPORTATION

Before transportation 4. Remove the dust cover.

1. Remove all discs from the trays.

5. Attach the transportation sheet and tape.

2. Turn off the power.

6. Confirm the power off when after base mechanism is

3. Disconnect the AC power cord, patch cords and

chucking. (Displayed the “NO DISC”)

remote control

cord.

ADJUSTMENT (TUNER)

. Adjust the intermediate frequency of AM and FM to the frequency of ceramic filter.

. Use a plastic screwdriver for adjustment.

SG RF Level :

75 ohm Open voltage

1. FM BAND

Antenna: 75 ohm Direct, Modulation :1 kHz, Dev. :

7?5kHz (mono / stereo) . f 40kHz (main)

~ 6.75kHz(pilot)

PARTS STANDARDS

Usually, not to alignment for

T2201

presetted. See note ~

Confirm voltage is about

L2 104

1.1-1 .3V.

STEP ITEMS

TUNING

FREQUENCY

INPUT

COND~

MEASURE

ON OUTPUT CONDITION

INPUT

MEASURE

OUTPUT

IF(V CURVE)

10.7 MHZ

IFSweep generator

.—

87.5 MHz

COVER

108.OMHZ

DC Voltmeter

TP202(H)

—-—

TP201(E)

Confirm voltage is below 8.5V

..’,

L2102

L2103

90.OMHZ

TP211(H)

VTVM

TP233(L)

TP212(E)

Oscilloscope

TP234(R)

TP235(E)

FM SG

(about 8dB)

AF output maximum

TRACKING

CT201

T2202

Digital Voltmeter

TP203(H)

TP204(E)

OV tO.05V. See note@

Vco

98.OMHZ

FM SG

(66dB)

SVR23

19KHz k 50Hz See note@

L-R. R-L : Minimum

..e..-

---—

SEPARATION

DEV(MAIN) = f40kHz

Confirm stereo indicator lights

up.

Stereo

Sensitivity

98.OMHZ

FM SG

Note : ~ Confirm IF waveform maximum and symmetric as shown below. If IF waveform is NG, please adjust T2201 as it

become GOOD.

A --’dX-”-+=L-

GOOD

NG NG

,. ,.,

@ Be careful so that digital voltmeter earth may not be in contact with other measuring equipments earth.

Adjust in the modulation off after the stereo indicator light on.

2. AM BAND (No alignment)

Antenna : IRE Loop, Modulation : 1000Hz 30?

STEP

ITEMS

COVER

TRACKING

=-l===

OUTPUT

CONDITION

INPUT

MEASURE

OUTPUT

Confirm S 8.5V (about 7.7V)

531kHz

--—

1701kHz

Digital Voltmeter

TP202(H)

-—---

TP201 (E)

output :

Maximum

-----

Adjust to near

the effective sensitivity.

--.-—

LOOP

VTVM

TP233(L)

Oscilloscope

TP234(R)

ANT

TP235(E)

603kHz

AM SG

1404kHz

(about 80 dB)

-“”E

Confirm auto tuning stops

----.-

LOOP

Digital Voltmeter

ANT

-2-

PARTS LOCATION (TUNER)

TUNER P.C.B

TP202

TP201

C2102

~~e ‘J

—

T2201

)’

J460C

TP204

I!Qil

3432

T2202

J43&

IIIL

J430

TP235 - TP234

TP233

.’. .

. . . ..

ADJUSTMENT OF DECK

Tape Speed Adjustment

Connect the FREQUENCY COUNTER to TAPE OUT.

1. Insert the test tape(MTT-1 11N, etc. : 3000 Hz) into the DECK 1.

Note : Set the test tape near the tape end

STOP button, and eject the test tape.

test tape(TCW-211, etc. : 1500 Hz)

into the DECK 1.

tape (C-60 Blank tape) into the DECK 2.

REC

button of DECK 2 and press the DECK 1 / 2 button.

FWD PLAY button. Both mechanism become normal speed dubbing.

high speed test pin to the high speed position.

Press the FWD PLAY button.

3. Adjust SVR401 so that a frequency ~-ounter reading of

3000 t 5 HZ % obtained: ‘“- ““-

4. Press the

5. Insert the

6. Insert the

7. Press the

Press the

8. Short the

(The mechanism is high

speed dubbing.)

9. Confirm that a frequency counter n%ding of 3000Hz t 10% (300 Hz) is obtained.

PARTS LOCATION (DECK)

DECK AMP Pc.6 - -

Ell

SVR401

I 1

-3-

,:..

....:,.

MEASUREMENTS OF TORQUE

ITEM TAKE-UP TORQUE

BACK TENSION

PULLEY TENSION

PLAY :TW2111 (FWD)

PLAY: TW2111(FWD)

Driving power cassette:

Test cassette

PLAY :TW2121(REV)

TW-2412(FWD)

F.FWD/REW; TW2231

REW:Torque Gauge

TW-2422(REV)

PLAY 30- 60gr.cm

2.0- 4.5gr.cm

> 60g

F.FWD 55- 120gr.cm

REW 55- 120gr.cm

REPLACEMENT OF HEADS

TAPE ‘“B””

TAPE ““A””

BROWN

PINK

RED

FROM 6P CONNECTOR

BROWN

(FROM 9P CONNECTOR)

FROM 9P CONNECTOR

BLACK

APPLVCEMEDINETOFIX

APPLVCEMEOiNETO

FIX

HOW TO CD PICKUP

-..

?1?

,. .—

- ..- ..

4!!3

=a2F

( SHORT)

4!!3

=$z!!16

(OPEN )

CD MECHANISM DESCRIPTION

1. Sensor & Switches of CD Mechanism

.’

PHOTO SENSOR :

PSOI 1(PSOO1) : Detection stop of DISC TABLE, position for reduce of DISC speed and music No.

SWITCHES :

SWI (with PICKUP Mechanism) : Detect limit position of the PICKUP.

SW2(S015 = S002) : Detect complete of chucking

for the DISC.

SW3(SOI 4 = S001 ) :

Detect complete of release of chucking for the DISC.

-4-

CD MECHANISM DESCRIPTION

2. Drive Control of DISC TABLE & PICKUP Mechanism

SW2 ON

CCW: Counter Clock Wise

CW : Clock

INPUT+

%“0

.FNO

2==

No. DETECT

YES

PAST AT 70mSEC

YES

MOTOR CCW

-0

RETURN

}

MOVEMENT DIRECTION

OF SENSOR

Unless 10 msec. < tl, the microprocessor is not able to detect it.

(a). If the turntable is rotating too slowly (t2 >70 msec.), or

(b). if the turntable is rotating too quickly (tl < 10 msec., the turntable will continue to turn (it will not stop rotating).

If, after the slit for the last disc number (@ in illustration) has passed, the next slit is not encountered for more than

70 msec., the next slit is detected and used as the stop position.

If the turntable is rotating too slowly (t2 > 70 msec.), the slits between @–and @ ~~ ~e-mistaken for stop positions.

,...

The base mechanism will rise at these positions and bump into the turntable.

When the base mechanism is rising or lowering, the motor stops when switch 3 is not on if 16 sec.. have passed.

Malfunction.

When the base mechanism is rising or lowering, the next disc is selected or switch 3 turns on 4 times when switch

is not on if 16 sec.. have not passed.

The control keys have no effect when the base mechanism is rising or lowering.

Action of CD Mechanism

1 ) DISC SKIP

-._.

.. .-

-5-

Figure 1

... .

,( . . . .

,,, ,,,

. ..

●

Figure 1 shows what the inside of the unit looks like when a disc is in play. Pressing DISC SKIP button at this point

causes the spindle motor

to stop (disc rotation stops) and the shaft of the sled motor to turn counterclockwise. This

causes the pickup to move in direction D.

when the position where the limit switch (SW1 ) turns on is reached, and the

sled motor stops. Simultaneously, the spindle of another motor (39) starts to turn counterclockwise, causing the gear

(31 ) to move in direction F. This causes another gear(31 ) to engage yet another gear (27), making

the second gear (27)

rotate counterclockwise. The cam portion (@) of another gear (27) is linked to the boss (@) of the lever (44), so the ro-

tation of the above mentioned gear (27) causes the lever (44) to move in direction J. The slide (45) linked to the boss

(@) moves in direction L (the switch (SW2) turns off), and the bosses (@ and @) of the sub-chassis (21) disengage the

parts ( @ and @) of the slide (45) that they had been linked to. This

frees the sub-chassis (21) so that it can move

downward

.,.

. .

,..

.. . .

.,,..

Figure 2

AS shown in Figure 2, one of the gears (28) is equipped with a cam. One boss (@) of the sub-chassis (21) en9a9es it

while the second boss ( @) provide; ”rotating support for the p’anel fdp (See 82 “in ‘“CD Turntable Exploded V!ew).

Therefore, when the gear (28) rotates, the sub-chassis (21 )

moves in direction G (downward) as shown .

Figure 1 shows how the assembly looks when the gear (28) has turned, causing the sub-chassis (21) to move down-

ward and the slide (45) to move in direction L.

At the same time, Figure 1 shows the switch (SW3) turns on, causing the shaft of the motor (39) to switch from coun-

terclockwise to clockwise rotation. This causes the gear (31) to turn in direction E, engaging another gear (37). The

second gear (37) turns clockwise. As shown in Figure 3, this gear (37) engages the inner gear ( @) of the turntable

(70), so the turntable (70) turns in a clockwise direction.

. ... ..

-- .—

J-

, STOP

‘ Psol 1

POHTO

SENSOR

DISC No.

STOP

,’

-6-

Figure 3

AS the turntable (7o) rotates, the sensor (PStM 1) detects the slits (@ and @) in it. The first slit (@) is used tO detect the

disc number and the second slit (@) to detect the stop position. When the senmr (PSO11 ) detects the specified disc

number*, the shaft of the motor (39) begins to turn more slowly, and the turntable Sows down.

When the next slit (@) is

detected, the rotational direction of the shaft of the motor (39) again

reverses and N begins to turn counterclockwise. As

shown in Figure 1, this causes the gear (31} to turn in direction F (Figure 1). As shown in Figure 1, another gear (28)

then starts to turn and, in the reverse of the operation described above, the sub-chassis (21)

rises and the slide (45)

moves in direction K , eventually ending up as

shown in Figure 5.

At this point, the switch (SW2) turns on

and the motor (39) stops. At the same time. the sub-chassis (21) is locked in the

lowered position by

the slide (45).

Note : ● Specified disc number ;DISC SKIP button : the next disc number.

37 35

,- . 1

(!! ~

)

\ l/

Figure 4

2 ) POWER ON (When AC Cord is First Plugged In)– Refer to Figures 1 -5-

. .

Basic operations : The turntable rotates to the disc number 1 po&ion, %d check stet a stet the base mechanism takes

. .... ..

figure 5

place.

If the switch SW3 is not on :

The spindle of the motor (39) rotates counterclockwise, lowering the sub-chassis (21 ). When the switch SW3 turns

on, the rotational direction of the motor shaft changes to be clockwise. This causes the turntable (70) to rotate. When

the sensor (PSO11 ) detects the disc 1 stop position, the motor (39) switches back to counterclockwise rotation, rais-

ing the sub-chassis (21 ) and performing checking. When another switch SW2 turns on, the motor stops.

If the switch SW3 is on :

The spindle of the motor rotates-clockwise. This causes the turntable (70)-to

rotate. When the sensor (PSO11 ) de- . .,

(. .:

tects the disc 1 stop position, the motor (39) switches back to counterclockwise rotation, raising the sub-chassis (21)

and performing checking. When another switch SW2 turns on, the motor stops.

3 ) POWER OFF (MANUAL Switch Off)

Basic operations :

1. If

the motor (39) was stopped, it remains so.

2. If the motor (39) was running, then the motor stops.

..,’.

-7-

STANDARD MAINTENANCE FOR CD

1. Applying Grease and Grease point

1 ) DISC Table (Top

2 ) CD Mechanism Block A

.“..

.,. ,

Note: S4W4G13EASE SG-7 = SANYO Type N0.HZGSNGROSG7

FLCW OIL 949P

SANYO Type No. HZOFOIL949P

Note: MC-GREASE EM50L = DOW CORNING Type No.

MOLYKOTE EM-50L

Attsr Insert gear lever and special waskf, SPPIY

ip@

MC-grease EM!50L to 1/3 length portion of shaft

APPLY SANGREASE

WASHER

SG-7

APPLY

MC-GREASE EMSOL ‘“’

GEAR LEVER

VIEW - A

&’

APPLY MC-GREASE EM50L

GEAR ALL AROUND

. .....

$? ‘?.

-. .... ...

......

-1

LY SANGREASE

SG-7

.. .-.

r--l

After

Lever

Note :

After inserting the gear lever and the special washer into the shaft, apply MC-Grease EM50L to the upper 1/3

of the shaft as

shown in view-B above.

-8-

3 ) CD Mechanism Block B

APPLY SANGREASE SG-7

I r

APPLY

FLOIL OIL 949P

(LITTLE )

-...

4 ) CD Mechanism Block C

APPLY

MOLYKOTEEM-50L

GEARALLAROUNO

5 ) CD Mechanism Lead Retainer

.,—

pyu

‘L_7 ‘“-

ORANGE

@!$

-9-

.,..

.’: ..,...

.’,.:.

.,. ,,,

,’. .

●

SERVICE MODE

Specifications

To enter any service mode other than timer debugging, first simultaneously

press the CD Memory key and BAND keys on the

set when Power on. This accesses the service mode entry state. Now press one of the buttons on the set to enter a service

mode. As the service

mode entry state is discontinued after 1 second elapses. (the system will enter a service mode only if

the next key is pressed within one second.) And more, press the 2 keys when reset start to enter a CD Tracking Balance

mode.

1. Checking the key input signal connections

O Enter this mode by pressing the MEMORY(TUNER) key during the service mode entry state.

O The entire LCD goes out once this mode is entered.

O In this mode, as keys on the set are pressed segments on the LCD corresponding to each key on a one-to-one basis

come on (i.e.

the lit portiorls gradually increase). (Refer

O Press the MODE key to exit this mode and return to the

KEY

DISPLAY KEY

TU/BAND I REC

PLAYIPAUSE

TU/MEMORY

I TIMER It STOP

TWMODE

TUNING/UP SLEEP

TUNINGIDOWN CONT

VOUUP TIME

%i=E%F

CD/REPEAT REPEAT

DISC 1

Table 1.)

normal mode.

DISPLAY

DISC

TRACK

ALL

SIDE B

RANDOM

1 OF CALENDAR I

KEY

DISPLAY

DISC 5

5 OF CALENDAR

EDIT

(PHONO)

12 OF CALENDAR

13 OF CALENDAR

TUNER

I 14 OF CALENDAR I

TAPE

15 OF CALENDAR

VIDEO

➤ OF. CALENDAR

“—

..-----

~ : Releases the key checking mode and returns the set to the normal mode.

......

TABLE 1 : CORRESPONDING KEYS AND DISPLAYS IN THE KEY CHECKING MODE

COMPU

SLEEP

WAKE I

LEVEL

TER RECL

,;–/–/%?/6

/1/e/F/c

-f

TIMERREC

DISC’ST

WIDE CLOCK INTRO RANDOM OFF SIDEA

TRACK AUTO MONO

FADETIMEEDIT

REPEAT

3456789101112131415 ~oNEALLcoNT

FIGURE 1: LCD ( LIQUID CRYSTAL DISPLAY)

2. Checking LCD connections

●Enter this mode by pressing the REPEAT key during the service mode entry state. (See nOte.)

●The entire LCD goes out once this mode is entered.

.in this mode, one segment of the LCD ]ights each time the

REPEAT key is pressed.

●Press the MODE key to exit this mode and return to the normal mode.

-1o-

●

SERVICE MODE

3. CD tracking balance adjusting mode

“

Enter this mode by pressing the PLAY/PAUSE key during the service mode entry state.

If the power is off and when the reset started, by pressing CD MEMORY key and TU/BAND key with simultaneously, and

enter this mode by power on.

. In this

mode, the tracking balance adjustment state (tracking is off) is automatically entered. If the PLAY key is pressed in

this state, the tracking servo is turned on and playing is begun at the present position. Therefore, the readout on the

display at the time playing is begun indicates the initial position of the pickup (i.e. the position of the limit switch).

. In this mode, the tracking balance adjustment state can be entered by pressing the MEMORY key during playing.

Pressing the PLAY key in this state turns on the tracking servo and causes playing to begin.

. Turning off the power releases the

CD tracking balance adjusting mode.

4. CD operation display

mode

“ Enter this

mode by pressing the STOP key during the service mode entry state.

“

In this mode, when CD function are used, displays like those shown in Table 3 (which represent CD

operations different than normally displayed) appear in the LCD track number display.

“ In this mode, the calendar numbers shown in Table 4 come on when an error occurs in

CD operations, at which time the

track number and calendar displays

become fixed at their current readouts.

This mode is released when press the MODE key or power is turned off.

‘.

..,’.

DISPLAY

OPERATION

Focus search has been begun

DISPLAY OPERATION

L-point access (CWD64 track jump)

Focus search has been begun

Waiting for focusing

I 73

L-~oint access (REV16 track jump)

L-point access (FWD16 track jump)

Focusinq

75 L-point access(REV1 track jump)

76 I L-point access has been completed

Spindle kick is in progress

Both CLV and tracking are ON

Pausing has begun

06 Both CLV and trackin~ are ON .

Pause (REV16 t~ack jump) . .. .

FOCUSsearch has been completed (success, failure)

Pick return (internal direction) is in progress

Pause (FWD16 track jump)

Pause (REV1 track jump)

Pause (trace)

Pick return (external direction) is in progress

Tray closing (pick return) has been completed

Music access has begun

Music access (high-speed access

has begun)

Music access (high-speed access is in progress)

30 Spindle brakinq has bequn

Spindle braking is in progress

Pick return is in Drooress

Music access (high-speed access has been completed)

Music access (REV64 track jump)

Music access (FWD64 track jump)

1..

. . .

..’

Spindle braking and pick return have been

completed

Fast forwarding is in progress

Music access (REV16 track jump)

Music access (FWD16 track jump)

Music access (final stage)

Rewindinq is in proqress

Playing has begun

Playing is in progress (break in the sound)

Music access (finai stage)

AO Base Mechanism go down has begun

A2 Turntable rotation has begun

Plavinq is in proqress (skip return o~eration)

60 TOC reading has been begun

TOC reading is in progress

Turntable rotation low speed

Base Mechanism rising has begun

A9 Base Mechanism chucking has begun

TOC reading is in progress

TOC reading has

been completed (success/failure)

70 L-~oint access has been bequn

A-

Base Mechanism chucking has been completed

L-point access (REV64 track jump)

TABLE 3 : DISPLAYS DURING THE CD OPERATION MODE

-11-

●

SERVICE MODE

I NUMBER

R-

STATE OF CD ERROR

Focusing is not possible in focus search.

The sub-code is not input during disc startup.

TOC cannot be read.

The focus was lost while

the servo was on (during playing, etc.).

The sub-code is not input while the servo is on (during playing, etc.).

TABLE 4 :

DISPLAY OF CD ERRORS

CD ADJUSTMENT

Electrical Adjustment

IOK

So far we have presented explanations regarding compact

disc player handling, notes prior to repair, handling the pickup

and disassembly of the unit.

Be sure to carefully read these

instructions before making any adjustments.

“r;:D–M{’o-’cope

Preparations

for Adjustments

BAND

PASS FILTER

Measuring instruments, tools and filter (4) Oscillator (400Hz, 300mV RMS)

(1) Test

disc. : YEDS 18 (Sony)

(5) Frequency Counter (5MHz ; or

more)

(2) Oscilloscope : SS5711 (1OMHZ or dual phenomenon)

(6) Screw drivers (non-metalic) for adjustments

or Memory scope : DSS6521 (Storagescope)

(7) Band Pass Filter

(3) Digital voltmeter (Input impedance 1M ohm or more)

(8)AC Voltage Meter

Notes :a.

Initial

The adjustments

can be using the equipment produced by other

manufactures provided that

the

performance of that equipment corresponds to that of the above listed models.

Use a 10:1 probe for observing signals on the oscilloscope and storage scope.

Test disc is subject change without notice.

., .—

.. _ _. .-

... .. .

set

1. Set the SVRI 1 to the mechanical center position as the initial position of as shown in figure below.

SVR1l

TP1 RF

TRACKIW R4LANCE

~TP2 FE SPINDLE ~

_TP3 TE

SLED MOTOR

TP4 ‘3WI

LIMIT SW

CN106

~—

Ll–

/’P

TO SYSCOiU mssc32r4

TO PICK UP

(C%86)

(c%%

Tracfdng Balance Adjustment (SVRlfl)

Connect the oscilloscope to TP3 (l_fE) and

(GND.).

COMAIN PCB

TPIO!IRF)

1P102(FE)

TPlO]llE)

1PU14@NO)

‘a

Sw?ll

TP4

5. Adjust SVR11 so that the TE

(Tracking Error) signal

waveform of TP3 on the oscilloscope is vertically sym-

Turn on the power of the unit.

Insert test disc .

metrical relative to OV. (See figure next page)

Playback the test disc.

Note: If this adjustment is imperfect, the sled motor (pickup

Continuously press the forward search ~ or back-

sencling motor) will run and normal play will be dis-

ward search 44 button to do it.

abled.

-12-

2D ADJUSTMENT

u--vim –-T%s

TP 1

(RF)

,. .

..l... l.. i.....

1“1”11 I

It’wtw’-”io

TP3

(TE)

+ SEARCH

SEARCH *

Other Adjustment of Tracking Balance (SVRII)

Set the service mode(CD tracking balance adjusting mode).

. Enter this

mode by pressing [he PLAY/PAUSE key during

the service mode entry state. Pressing the PLAY/ Pause

key in this state turns on the tracking servo and causes

playing to begin. (See service

mode)

Connect the oscilloscope to TP3 (TE) and TP4 (GND).

Adjust SVR11 so that the TE (Traverse) signal waveform of

TP3 on the oscilloscope is vertically symmetrical relative to

OV. Or may adjust

SVR 11 so that the DC voltage : (Peak

Hold Level) - (Bottom Hold Level) of the traverse signal is

OV. (See figure right

side)

If it were not for obtain waveform at the right figure, repeat

item 2-1 - 2-3.

—.

)

_._.

-1

11]+ 500”s 111

---r .,, ,

TP1

(RF)

,:,..

:.’.

.+J-I--4-A..-I -’4-+---i

TP3

(TE)

4+ SEARCH

.-.

—-----

.....

Focus Gain Confirmation

Connect the storage scope to TP2 (F.E : Focus

Error)

through the Band pass fiiler. (See BPF Figure)

Turn on

the power of the unit.

Playback

the test disc.

4. Set the output of AF oscillator to 400 Hz, 0.5V rms and

connect to pin 24 (IC1 01) through the resistor : 120k ohms.

5. Confirm so that the voltage

of the F.E signal waveform on

the storage scope is 0.5V p-p, t 3db by through

BPF.

‘If this CONFIRMATION is imperfect, become weak the mechanical shock, inferior playability, and can not playback the Disc.

,.” ,.

...’..

-....

AF (XCII I ATOR MAIN PCB

OSCILLOSCOPE or STORAGESCOPE

v 1 BAND PASS FILTER

TP2

,.-.-, I

. ----- -------

, f

$. Tracking Gain Confirmation

1. Connect the storage scope to TP3 (T.E) through the Band

pass filter. (See BPF Figure).

2. Turn on the power of the unit.

3. playback the test disc.

4. Set the output of

AF oscillator to 400 Hz, 0.5V rms and

connect to pin 14 (ICI 01) through resistor

47k ohms.

5. Confirm so that the voltage of

T.E signal waveform on

storage scope is 0.5V

p-p, t 3db by through BPF.

the

.. ............... . ...

. ... . . . . ..

“Ifthis CONFIRMATION is imperfect, become weak the mechanical shock inferior playability, and can not playback the Disc.

AF OSCILLATOR

MAIN PCB

OSCILLOSCOPE or STORAGESCG?E

47K

BAND

PASS FILTER

400Hz

0.5V rms

TP3

PIN 14

(TE) -

-13-

●

PARTS LIST

PRODUCT SAFETY NOTICE

Each precaution in this manual should be followed during servicing. Components identified with the IEC symbol ~ in the parts list

and the schematic diagram designate components in which safety can be of special significance. When replacing a component identi-

fied & use only the replacement parts designated, or parts with the same ratings of resistance, wattage or voltage that are desig-

nated in the parts list in this manual. Leakage-current or resistance measurements must be made to determine that exposed parts

are acce Dtab[v insulated from the

SUDDIV circuit before returnina the Droduct to the customer.

CAUTION: Regular type resistors and capacitors are not list. To know those values, refer to the schematic diagram.

N.S.P : Not available as service parts.

ACKING

Ref. No.

& ACCESSORIES

Part No.

614 244 7208

614 244 7215

614 240 7363

614 240 7370

614 176 7024

614 180 4644

614 176 3231

614 244 7277

614 243 5472

614 232 6671

614 234 5511

614 231 6832

CABINET&CHASSIS

Ref. No.

Part No.

614 239 4281

614 216 7083

614 241 7171

614 244 6966

614 129 1901

614 112 3509

614 240 6281

614 240 6304

614 241 5504

614 241 5528

614 220 6690

614 239 6063

614 240 6397

614 239 4403

614 239 4410

614 125 0830

614 069 0385

614 218 0051

614 194 9239

614 239 4618

614 240 8926

614 232 4677

614 216 9261

614 216 9346

614 208 0986

614 240 2702

614 240 2719

614 216 9063

614 216 9117

Description

INNER CARTON, PROO

SINGAPORE

INNER CARTON,PROO MALAYSIA

PAO,BOTTOM

PAD, TOP

INNER POLYE COVER,SET

PROTECTOR SHEET,SET

INNER POLYE COVER,ACCESSORi

INSTRUCTION MANUAL

NOTICE,CD MECHA PROTECT

ANTENNA

LOOP ANTENNA,AM ANT

LABEL,SAFETY,LASER CLASS

Description

CABINET,%OTTOM

ASSY,FOOT

PANEL,REAR,PROD SINGAPORE

PANEL,REAR,PROD MALAYSIA

FIXER,AC CORO

HINGE,COVER,DUST

ASSY,PANEL,FRONT

ASSY,PANEL

ASSY,LID,CASSETTE

WINDOW,-EQ

WINDOW,VOL.

WINDOW,FUNCTION

PANEL,SIDE, L

PANEL;SIDE, tl-

CUSHION,HINGE

GEAR ASSY

SPRING,WIRE,LID,CASSETTE

BRACKET,MECHA KNOB

BRACKET-E,FRONT-SIOE (R)

BRACKET-E,FRONT-SIDE (L)

SHEET,CD PANEL,TOP

BRACKET-E,DECK PCB FIX

SPRING,PLATE,REC

CUSHION,LEAD

FIX

BRACKET-M,FRONT-SIDE (R)

BRACKET-M,FRONT-SIDE (L)

BUTTON, MECHA BUTTON (STOP.

ETC)

BUTTON,MECHA BUTTON(PAUSE)

Ref. No.

‘IXING P

Ref. No.

Y1 -

Y9 -

;LECTRI(

Ref. No.

-14-

Part No.

614 216 9124

614 228 0218

614 239 4519

614 239 4526

614 242 0423

614 242 0430

614 239 4557

614 240 2344

614 242 0447

614 242 0454

614 240 6441

614 220 6737

614 240 6274

614 212 8343

,RTS

Part No.

411-021..6603

411 021 3503

411 021 1806

411 021 6405

411 133 0902

411 001 3905

411 028 2905

411 022 2802

4il 154 4200

,L PARTS

Part No.

fi614 023 2912

614 217 3732

A614 244 5761

~614 245 8389

Li!i614 245 8440

A423 016 9308

614 244 7543

614 244 7550

614 244 7567

Description

BUTTON,MECHA BUTTON (REC.

ETC)

BUTTON,BASS.OUB.

BUTTON,POWER

BUTTON,BANO.MEMO

BUTTON,PLAY

BUTTON,REPEAT

BUTTON,SKIP

BUTTON,RANDOM .EDIT

BUTTON,TUN.PRESET

BUTTON,VOL

BUTTON,FUNCTION

KNOB,SLIDE,EQ

ASSY,COVER,DUST

LABEL,LASER SAFETY

Description

SCR S-TPG 81N 3X8,PANEL

SIDE & TOP

SCR S-TPG BIN 3X1O,REAR

BOTTOM & SOCKET/GEAR ET

SCR S-TPG BIN 2.6X1O,FRONT

BRACKET-M/KNOB BRACK

SCR S-TPG BIN 3X8,DECK

MECHA FRONT SIDE & BOTTOM

SCR S-TPG BRZ+FLG 3X6,AMP

PCB HEAT

SINK IC

SCR S-TPG BIN 4X6,TRANS

SCR S-TPG PAN 2X4,DECK

BRACKET-E

SCR S-TPG FLT 3X1O, BASS

XPANDER & POWER

SCR S-TPG PAN+FLG 2X6,LUG

Description

POWER CORD

HEAT SINK

POWER TRANS

PCB,PT 1

PCB,HEADPHONE STOPPER

FUSE,250V 0.2A (F901)

ASSY,CONNECTOR-S,6p(CN103)

ASSY,CONNECTOR-S,8P(CN1O5)

ASSY,CONNECTOR-S, 13P(CN104)

PARTS LIST

RONT P

Ref. No.

CN251

CN252

CN253

CN254

CN255

CN503

CN504

CN505

CN506

CN507

CN601

CN602

CN603

CN604

CN605

CN606

CN607

CN608

D2501

D2502

02503

D2504

D4402

D4403

D4404

D4405

D4411

D4412

D4413

D4414

04415

D4420

D4421

D4422

D4430

D4431

D4433

D4440

D4490

IC251

IC501

IC502

IC503

IC601

IC900

IC901

L2501

LCDO1

PL251

:.BOARD ASSY

Part No,

614 242 4896

614 035 4997

*14 035 4935

614 244 1602

614 244 1596

614 035 4928

614 244 0155

614 244 0131

614 211 3233

614 244 0148

614 211 2991

614 240 2450

614 226 9978

614 020 6616

614 020 6579

614 020 6586

614 020 1222

614 035 4973

407 007 9904

407 012 4406

407 012 5809

407 005 4505

407 007 9904

407 012 4406

407 012 5809

407 007 9904

407 012 4406

407 012 5809

407 036 9203

407 039 5905

407 005 4505

407 013 7109

407 007 9904

407 012 4406

407 007 9904

407 012 4406

407 007 9904

407 012 4406

407 007 9904

407 012 4406

407 007 9904

407 012 4406

407 005 4505

407 013 7109

407 007 9904

407 012 4406

410 146 1203

409 003 9308

409 053 0409

409 018 4909

409 003 9308

409 039 9204

409 020 0906

614 028 4256

614 239 1723

614 045 9661

Description

!USY,PCB,FRONT

SOCKET,1OP

SOCKET,4P

ASSY,CONNECTOR-S

IISSY,CONNECTOR-S

SOCKET,3P

SOCKET,TO DECK 9P

SOCKET,TO DECK 4P

SOCKET,TO MAIN 5P

SOCKET,TO MAIN 6P

SOCKET,TO MAIN 2C

PLUG,13P

PLUG,1OP

SOCKET,9P

SOCKET,5P

SOCKET,6P

SOCKET,3P

SOCKET,8P

DIOOE GMAO1

DIODE 1SS133

DIODE 1SS176

DIODE DS442X

DIODE GMAO1

DIODE 1SS133

DIOOE 1SS176

DIODE GMAO1

OIODE 1SS133

DIODE 1SS176

LED SLP-138C-51-B,CD

LED SLP-138C-51-B,TUNER

LED SLP-138C+51-B,TAPE

LED SLP-138C:51-B,VIDE0

LED SLP-738F-51-B,LEVEL 1

LED ’SLP-738F-51-B,LEVEL 2

LED SLP-738F-51-B,LEVEL 3

LED SLP-738F-51-B,LEVEL 4

LED SLP-738F-51-B,LEVEL 5

DIODE DS442X

DIODE 1S2473

OIODE GMAO1

DIODE 1SS133

DIOOE GMAO!

DIO~E 1SS133

DIODE GMAO1

DIODE 1SS133

DIOPE GMAO1

DIODE 1SS133

DIODE GMAO1!

DIODE 1SS133

DIODE DS442X

DIODE 1S2473

DIODE GMAO1

DIODE 1SS133

IC UPD75306GF-225-3B9

IC BU4051B

Ic TC9153AP

IC LA6458S

IC BU4051B

IC NJM78L05A

IC LB1403N

FILTER

LCD

LAMP 12V 70MA

Ref. No.

‘L252

]4401

)4402

)4410

)4411

J4412

24413

24414

]4415

24417

24418

24419

24420

24421

24422

24423

24501

j4502

24601

24602

S2501

S2502

S2503

S2504

S2505

S2506

S2507

S2508

S2509

S251O

S2511

S2512

s25i3

S2514

S2515

S2516

S2517

S2518

S4402

S4403

S4404

S4405

S4406

S4407

VR501

VR!302

VR503

VR900

X2501

;

CD ‘MICC

Ref. No.

C1301

CN106

CN107

Part No,

614 045 9661

405 011 8609

405 000 2205

405 000 6104

405 011 8609

405 000 6104

405 011 8609

405 000 3103

405 011 8609

405 011 6609

405 011 8609

614. 220 5655

614 220 5655

’614 220 5655

614 220 5655

’614 220 5655

614 220 5655

,614 220 5655

614 220 5655

614 239 3888

614 239 3871

614 215 5561

614 239 4656

614 240 8940

614 244 9684

’614 241 0996

Description

LAMP

TR 2SC1740S-S

TR DTA144ES

TR DTC144ES

TR 0TC144ES

TR 2SC1740S-S

TR DTC144ES

TR 2SC1740S-S

TR DTC114ES

TR 2SC1740S-S

SWITCH,TACT,FM TUNE BANO

SWITCH,TACT,MEMORY

SWITCH,TACT,MODE

SWITCH,TACT,TUNING UP

SWITCH,TACT,TUNING DOWN

SWITCH,TACT,PRESET UP

SWITCH,TACT,PRESET DOWN

SWITCH,TACT,PLAY/PAUSE

SWITCH,TACT,STOP

SWITCH,TACT,F.REW

SWITCH,TACT,F.FWD

SWITCH,TACT,DISC SKIP

SWITCH,TACT,REPEAT

SWITCH,TACT,MEMORY

SWITCH,TACT,RANDOM PLAY

SWITCH,TACT,INTRO SCAN

SWITCH,TACT,EOIT

SWITCH,TACT,FADE

SWITCH,TACT,CD

SWITCH,TACT,TUNER

SWITCH,TACT,TAPE

SWITCH,TACT,VIDEO

SWITCH,TACT,VOLUME UP

SWITCH,TACT,VOLUME DOWN

VR,SLIDE,GEQ 2X50KB

VR,SLIDE,BALANCE IOOKSW

RESONATOR,CERAM 4.19MHZ

MOUNT-M

SHEET,MAT

SHEET,FILM

COVER

?0 COMPUTER P.C.BOARDASSY

Part No.

614 242 4902

403 196 9602

614 017 3925

614 017 2102

Descrhtion

ASSY,PCB,CD MICOM

DL-ELECT 0.047F Z

5.5V,BACK UP

PLUG,FOR CTL,13P

PLUG,AC INPUT,3P

-15-

EXPLODED VIEW (CABINET)

v’

2+5 -

~LODED VIEW (CHASSIS)

-17-

,.,.

...

.-.,

..”.

. .

●

PARTS LIST

Ref. No.

Part No.

Description

D2104

407 007 9904

DIODE GMM31

or 407 012 4406

DIODE 1SS133

407 012 5809

DIODE 1SS4?6

D2105 407 007 9904

DIODE GNA#l

or 407 012 4405

DIODE 1S!S133

or 407 012 5809

DIODE 1SS%76

D2201 407 007 9904

DIODE GMA$31

407 012 4406

DIODE 1SS133

407 012 5809

DIODE 1SSX76

D2301 407 007 9904

DIODE

GMAQ1

or 407 012 4406

DIODE 1SS133

or 407 012 5809

DIODE 1SS176

D2302 407 007 9904

DIODE GM%J1

407 012 4406

DIODE lSS’133

407 012 5809

DIODE 1SS176

D2451 407 007 9904

DIODE GM.4@l

or 407 012 4406

DIODE 1SS133

or 407 012 5809

DIODE 1SS276

IC201 409 195 3108

IC LA126!i-AUD

IC202 409 016 9500

IC LA3361.

IC203 409 066 7600

IC LM7001

L2102 614 229 0866

TRANS,RF

L2103 614 229 0873

TRANS,RF

L2104 614 239 7282

TRANS,OSC

L2105 614 028 4058

FILTER 10t4)UH

L2150 614 241 1162

TUNER

L2451 614 028 4256

FILTER 2.i2UH

Q2101 405 114 8506

TR 2SK193-ML

405 114 8407

TR””2SK193-LL

Q2102 405 012 5904

TR 2SC19?!23-Y

Q2103 405 114 8506

TR 2SK193+L

or 405 114 8407

TR 2SK193_flL

Q2104 405 012 5904

TR 2SC19Z3-Y

Q2105 405 012 5904

TR 2SC1923-Y

Q2201 405 018 7902

TR 2SC38(KTM-O

Q2202 405 012 2002

TR 2SC181i5-GR

or 405 020 7204

TR 2SC94f&$l-K

j2203 405 001 7001

TR 2SA102S-GR

j2301

405 012 2002

TR 2SC1835-GR

405 020 7204

TR 2SC945$I-K

j2302 405 067 0800

TR RN22UT

405 078 2404

TR BN1A4F

-._.

405 000 0904

DTA114TES

22351 405 067 0800

TR RN220T

405 078 2404

TR BN1A4P

or 405 000 0904

TR DTAll~S

~2352

405 067 0800

TR RN220Z ‘

or 405 078 2404

TR 8N1A4P

Dr 405 000 0904

TR DTA1143%

~2451 405 114 1804

TR 2SC18K$5(L)-GR

>r 405 114 1903

TR 2SC1815(L)-Y

J2452 405 114 1903

TR 2SC18E6(L)-Y

405 114 1804

TR 2SC18SJ5(L)-GR

J2461

405 012 2002

TR 2SC18E5-GR

)r 405 020 7204

TR 2SC94%%-K

j2702 405 016 2206

TR 2SC28?%3-A

>r 405 016 2305

TR 2SC287%-B

j2802 405 016 2206

TR 2SC28?18-A

405 016 2305

TR 2SC287%-B

~2901

405 012 2002

TR 2SC183.!6-GR

)r 405 020 7204

TR 2SC94&i-K

32465

401 018 1209

CARBON 33 JB l/4W,FLAME

PROOF

3VR23

614 204 1901

SEMI V.R.AOKB

r2201

614 239 7299

TRANS,IF

r2202

614 030 4114

I.F.T

Ref. No.

X2451

Part No.

614 240 1118

614 234 0486

614 116 5349

614 117 1029

614 234 1728

:D MAIN P.C.BOARDASSY

Ref. No.

CN101

CN102

CN103

CN104

CN105

CN106

IC101

IC102

IC104

IC105

IC106

;:101

Q1102

Q1501

SVR11

X1401

Part No.

614 240 8469

614 017 3840

614 017 3871

614 017 3857

614 017 3925

614 017 2591

614 017 2553

409 245 4802

h409 247 0000

409 248 8708

409 262 1709

409 241 5506

409 192 7109

405 002 0308

405 014 4509

614 223 1906

614 231’ 2667

REMocoi(149 536-03i

Ref. No.

Part No.

614 236 0132

U-!!Y!!

C)escription

RESONATOR,7.2MHZ

RESONATOR

SHIELD PLATE,SYMBOL SIDE

SHIELD PLATE,PATTERN SIDE

TERMINAL

Description

ASSY,PCB,CD MAIN

PLUG,FOR SENSOR,5P

PLUG,FOR ACT,8P

PLUG,FOR MOTOR,6P

PLUG,FOR CTL,13P

PLUG,FOR DG,8P

PLUG,4P

LA921OM,SSP

LA6524,PICK ACT DRV

LC7866E

LC7883KM

XRA15218F,BUFF

BA15218F

2SA1037K-R,LASER DRV

2SC2412K-R

2SC2412K-R.DAC VREF REG

POTENTIOMETER;SVR1O1 FOR

T . BAL

RESONATOR 16.93MHZ ‘

FLOW CHART

.. .

OUTLINE CHART

/ ~

CHANGER Section

-20-

Chuckirw “off” mode

Disc “select” mode

Rotate the turntable and stop

mode with disc appoint

[

Chucking “on” mode

Come up the Base mechanism

w/pickup andd:$ce chucking of

TROUBLE SHOOTING GUIDE & FLOW CHART

Disc select from stop

TROUBLE SHOOTING GUIDE

SYMPTOM

POSSIBLE CAUSE

CORRECTIVE ACTION

No power when

the POWER button

is set to ON.

No sound.

No power plug connection at

the

AC outlet

Insert the power plug into the

AC outlet.

Volume control is set to

minimum.

Turn up the volume.

The wrong

function is

selected.

Select the correct function.

Come down the Base mechanism

Connect the leads firmly to the

speaker terminals.

No sound from

any function

Faulty speaker connections

&::’N

Chucking release finished?

The CD player will I The disc is loaded upside

I Load the disc with the label

not operate

] down. I side up.

The sound from

the CD player

skip.

The compact disc is dirty. I Clean the disc.

The compact disc is scratched. I Replace the disc.

.......

YES

Abnormal CD or

display operation

with the correct

button settings.

The memory must be reset.

Disconnect the power cord,

then connect the power cord

and resume operation.

i’

Base mechanism stop

Poor sound quality Dirty heads, pinch roller or

Clean the tape path.

during playback. capstans.

I Turntable high speed I

Record mode does The guard tabs have been’ Place

tape over the guard tabs.

not operate. removed from the cassette.

Photo

sensor

input

.. . .

WHAT TO DOFF.....

If the operation of the unit or display is not normal or when all

the memory contents are to be cleared.

J=_No

HOW TO NORMAL STATE THE SET

Turntable idling stage

● The reset switch serves to initializes (reset) of the active in

the microprocessor (ICI 03 UPD751 12) which controls the

TUNER

and CD block.

-. ...

(1) Disconnect

the power cord from the AC outlet.

(2) Keep the Reset Switch (S1 301) depressed for about 40

seconds. (The backed up electrolytic capacitor is

“.-,

. .. . .

...... .

discharged by keeping the Reset Sw;tch dep~essd

depress for about 40 seconds.)

(3) Reconnect the power cord to the AC outlet.

(4) Press the TUNER and CD operations, and check their

operation.

k—————l

SW2 = ON

to YES

. .. .

/’

Reset SW position

Base mechanism stop

❑

End

.:;.”.

/ \

REAR PANEL (BACK SIDE)

-21-

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Sanyo GCD2000 User manual

Brand: Sanyo

Model: GCD2000

Category: CD players

Type: User manual

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Sanyo GCD2000 User manual

Sanyo GCD2000 User manual

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