Sharp JG545X(GY) Bedienungsanleitung

SHARP

SERVICE

MANUAL

S9381 JC545XGY

JG545X(GY)

In the interests of user-safety the set should be restored to its original

condition and only parts identical to those specified be used.

INDEX

CONTENTS

Page

SPECIFICATIONS..

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

NAMES OF PARTS

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

DISASSEMBLY.. ....................................................................................................................

REMOVING AND REINSTALLING THE MAIN PARTS.........................................................

ADJUSTMENT .......................................................................................................................

NOTES ON SCHEMATIC DIAGRAM ....................................................................................

TYPES OF TRANSISTOR AND

LED

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

FITING

OF DIAL POINTER ...............................

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

EXPLODED VIEW

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

SCHEMATIC

DIAGRAM

/WIRING

SIDE OF P.W.BOARD

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

9-12

REPLACEMENT PARTS LIST

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

13-15

SHARP

CORPORATION

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER

TO THE OPERATION MANUAL.

SPECIFICATIONS

General Tape deck

Power source:

Output power:

DC 3 V[“AA”size

(UM/SUM-3,

HP-7) battery

2 or external DC 3 V]

Max;20mW(10mW+10mW)

(DC operation)

Dimension:

Weight:

RMS;

5mW)

(DC operation, 10

.H.D)

Width;

(3-3116”)

Height; 117 mm

(4-9/l

6”)

Depth; 29.9 mm

-l/8”)

185

(6.5 oz.) without batteries

Frequency response:

15,000 Hz

(MetaKrOJNormal

tape)

Radio

Frequency range:

;

108

MHZ

AM; 526.5

1,606.5

kHz

Headphones

Type:

Impedance:

Inner-ear dynamic

24 ohms

Specifications for this model are subject to change without

prior notice.

NAMES

PARTS

1. Power/Battery Indicator

2. Extra Bass Switch: X-BASS

3. Volume Control

4. FunctionTape Selector switch

Headphones Socket

Tape Direction Switch: 41,

7. Stop Button:

Fast Wind Buttons:

Play Botton:

10. External DC Power Input Socket

Il.

Tuning Control

12. Band Selector Switch

13.

Cassette Compartment

14.

Battery Compartment

15.

Headphones

2345

Figure

2-l

Figure 2-2 Figure 2-3

-2-

DISASSEMBLY

Caution on Disassembly

Follow the below-mentioned notes when disassem-bling the

unit and reassembling it, to keep its safety and excellent

performance:

Take cassette tape out of the unit.

Be sure to remove the batteries from the unit.

After servicing the unit, be sure to rearrange the leads

where they were before disassembling.

4. Take sufficient care on static electricity of integrated

circuits and other circuits when servicing.

Front

Cabinet

Cassette

Compartment

(Front Cabinet)

Rear Cabinet,

(‘&(Front Cabinet)

Button Cover

(B%on Cover)

Black

Figure 3-l

Figure 3-2

Figure 3-3

(Dl\

Front

’

Cabinet

,y/

‘Motor

Figure 3-4

(Fl)

Mechanism

Block

Motor

Figure 3-5

REMOVING

AND

REINSTALLING

THE

MAIN

PARTS

TAPE MECHANISM SECTION

Perform steps 1, 2, 5, 6 and 7 of the disassembly method to

remove the tape mechanism. (See Page 3.)

How to remove the playback head

(See Fig. 4-l

Removethescrews(A1)

x2pcs.,

to remove the playback head.

Note: After replacing the playback head and completing the

azimuth adjustment, be sure to apply screwlock.

How to remove the pinch roller

(See Fig. 4-l.)

Rotate the pinch roller

(Bl)

PCS.,

as shown in

and raise

it.

How to remove the main/motor belt

(See Fig. 4-2.)

1. Remove the motor belt (Cl) xl pc.

2. Remove the main belt (C2) x

pc.

How

to remove the motor

(See Fig. 4-2.)

Remove the motor belt (Cl)

1 pc.

2. Remove the screws

(Dl)

PCS.,

to remove the motor.

How to remove the flywheel

(See Figs. 4-2 and 4-3.)

1. Remove the main belt (C2)

1 pc.

2. Remove the washers

(Dl)

2pcs.

3. Remove the stop washers (D2) x2

PCS.,

with a small precision

screwdriver to extract flywheel from the capstan

matal.

Note: When the stop washer is deformed or damaged, replace it

with a new one.

How to reinstall the parts

Install each part in the reverse order of the removal with care.

(Al)

x2.2mm Playback

Head

Figure

4-1

(DlIx2

Flywheel

Figure 4-2

Flywheel

Figure 4-3

-4-

ADJUSTMENT

TUNER SECTION

fL: Low-range frequency

fH:

High-range frequency

AM IF/RF

MECHANISM SECTION

Driving Force check

Torque Meter Specified value

Play: TW-2412

Reverse play:

TW-2422

Torque Check

Torque Meter

Over 30

Specified value

rest Stage Adjusting Point

runing

doltage

VR301Voltage Vt

14.65 +0.01

(input: Antenna

Output: TP5)

VRl

(fH)

Voltage Vt

Obtain 9

+O.l

2. VR2 (Input: Antenna

Output:

TPl)

VRl

(fL)

Voltage Vt

Obtain 1.5

0.03

2. VR3 (input: Antenna

Output:

TPl)

Repeat steps 2 and 3 until no further improvement

can be made.

Specified Value/

Instrument Connection

Plav: TW-2111

Reverse play: Tw-2121

Fast forward:

TW-2231

I 20 to 50

a.cm

20 to 50

g.cm

Head Azimuth

Test Tape

Instrument Connection

)

Ml-T-114

Headphones Socket

(455

kHz)

Obtain the best output.

(Input: Antenna.

Output: TP3)

Maximize the output.

(Input: Antenna

Output: Headphones Socket)

(Lord resistance: 24 ohms)

Tape Speed

Test Tape Adjusting Specified value Instrument Connection

Point

MTT-111

VR201

3,000

90 Hz Headphones Socket

3and

:overage

fL:

(510

kHz)

fH:

TC3

(1,650

kHz)

Tracking

fL:

(600

kHz)

fH:

Checking

(I ,400

kHz)

Maximize the output.

(input: Antenna

Output: Headphones Socket)

(Lord resistance: 24 ohms)

FM IF/RF

Test Stage Adjusting Point Specified Value/

Instrument Connection

Checking

(10.7

MHz) Check the

curve to the center.

(Input: TP2

Output: TP3)

------I

Maximize the output.

(Input: TP4

Output: Headphones Socket)

(Lord resistance: 24 ohms)

Band

coverage

fL:

(87.3 MHz)

fH:

TC2

(108.3

MHz)

Tracking

fL:

(88 MHz)

fH:

Checking

(108MHz)

Maximize the output.

(Input: TP4

Output: Headphones Socket)

(Lord resistance: 24 ohms)

[

TUNER PWB-A

(

IAM

TRACKlNGfL]

Top1

\FM TRACKING

fL\

FM BAND COVERAGE

TC2tZl

AMBANDCOVERAGE

Figure 5 ADJUSTMENT POINTS

-5-

NOTES

SCHEMATIC

DIAGRAM

. Resistor:

To differentite the units of resistors, such symbol as

and

are

used: the symbol

means 1000 ohm and the symbol

means

1000 Kohm and the resistor without any symbol is ohm-type

resistor. Beside, the one with “Fusible” is a fuse type.

Capacitor:

To indicate the unit of capacitor, a symbol

is used: this symbol

means micro-micro-farad and the unit of the capacitor without

such a symbol is

microfarad.

As to electrolytic capacitor, the

expression “capacitance/withstand voltage” is used.

(CH), (TH), (RH), (UJ): Temperature compensation

(ML): Mylar type

(P.P):

Polypropylene type

DTC144 EK

2SC1623

2SKl067

IMD6

The indicated voltage in each section is the one measured by

Digital Multimeter between such a section and the chassis with

no signal given.

Tuner

(

FM mode

FM stereo mode

Mraking except for

( )

AM mode

Schematic Diagram and Wiring Side of

P.W.Board

forthis

model

are subject to change for improvement without prior notice.

REF. NO.

DESCRIPTION

POSITION

SW1

BAND FM ST

SW101

DIRECTION

FWD

SW102 X-BASS OFF

SW103 FUNCTION

TAPE/NORMAL

SW104 MAIN

TOP VIEW

svc341

TOP VIEW

SV160

TOP VIEW

SVC203CP

Figure

6-1

TYPES OF

TRNSISTOR

AND LED

FITTING

DIAL

POINTER

1. Turn the tuning knob fully to direction

2. Set the dial pointer to the

“0”

point, insert it into the tuner frame.

Tuning Knob

(VRl)

‘Tuner Frame (115)

’

Figure 6-2

FM SIGNAL

j_,

r----------

, ,

_-._

TUNING

pi%%--

.;>,

-:a-

----_

-----

L301

r--------

CONVERTER

:I26

OOP

CH)

C?“d

PLAYBACK HEAD

L---w.-

DPHONES

Q102

DICI

44EK

YZII

-I

!a,

“2

:.‘:;4

i.‘Z

4.7.

----P-v--

-----.--

NOTES

-._--._.

SCHEMATIC

UIAtiHAM

can be

tout-d

on page 6.

Figure 9

SCHEMA~

'LAYBACK

SIGNAL

PUNCT ION

MAIN

SW1

EXT. DC POWER

Ita2

+--$‘“”

PI01

BATTERIES

3”

AA’

IZE

UWSUM-3,

R-E

HP7lX2

Y2F

EXTERNAL DC

3”

X-BASS

Q103

25C1623

MUTING

--7cE--

X-BASS

SW!

02-B

-4

OFF

ICZOI

MM1

038BF

MOTOR

YI”

DRIVER

-1

“2’

”

CZOl

“*l/4

C203

0. 022

c20’2

220/A

X-BASS

PI04

ZSCI

623 L6

HEMATIC

DIAGRAM

-lO-

<------I

\------\

‘------7

GY,

f”UNER”

PWB-A

AMBAR ANT.

BATTERY

TERMlNf

(128)

BATTER

‘AA”

SIZE

iUM/SUM-3

external DC

i-7

---

Figure

WIRING

SIDE

SW103

FUNCTION

JlOl

RADIO -TAPE

TAPE

VRIOI

PHONES NORMAL-METAL/VOLUME

r-----y

CrO2

BATTERIES DC

(Uhl/SUM-3

,R6

al DC

3V or

HP-71

11201

BATTERY

TERMINAL

SPEED

WI01

:CTION

104

MAIN

PLAY

BACK

HEAD

ASS’Y

(II1

J102

EXT. DC POWER

MOTOR

910

llNG

SIDE OF

P.W.BOARD

-12-

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