Sanyo PH-DTA120 Manual de usuario

FILE NO.

Service Manual

Audio System

PH-DTA120 (DE)

(US)

DTA-120 (UK)

(XE)

(AU)

(CA)

(SS)

PRODUCT CODE No.

129 699 09 DE

129 699 03 US

129 699 01 UK

129 699 02 XE

129 699 05 AU

129 699 04 CA

129 699 07 SS

REFERENCE No. SM5810617

Laser beam safety precaution .......................................... 1

Tuner Adjustments ........................................................... 2

Wiring Connection ........................................................... 3

Exploded View (Cabinet & Chassis) ................................ 4

Exploded View (Speaker) ................................................ 6

Parts List(Cabinet & Chassis) .......................................... 7

Parts List(Speaker) .......................................................... 9

Block Diagram .................................................................. 10

IC Block Diagram & Description ....................................... 11

Schematic Diagram .......................................................... 12

Wiring Diagram ............................................................... 18

CONTENTS

1234

5678

- 1 -

CAUTION :

USE OF CONTROLS OR ADJUSTMENTS OR

PERFORMANCE OF PROCEDURES OTHER

THAN THOSE SPECIFIED HEREIN MAY RESULT

IN HAZARDOUS RADIATION EXPOSURE.

LASER OUTPUT................ 0.6 mW Max. (CW)

WAVE LENGTH ................. 790 nm

• Pickup that emits a laser beam is used on this CD section.

LASER BEAM SAFETY PRECAUTION

CLASS 1 LASER PRODUCT

LUOKAN 1 LASERLAITE

KLASS 1 LASERAPPARAT

CAUTION –INVISIBLE LASER RADIATION WHEN OPEN AND

INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM.

ADVARSEL –USYNLIG LASER STRÅLING VED ÅBNING, NÅR

SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION, UNDGÅUDS ÆTTELSE

FOR STRÅLING.

VARNING –OSYNLIG LASER STRÅLNING NÄR DENNA DEL ÄR ÖPPNAD

OCH SPÄRR ÄR URKOPPLAD. STRÅLEN ÄR FARLIG.

VORSICHT –UNSICHTBARE LASERSTRAHLUNG TRITT AUS, WENN

DECKEL GEÖFFNET UND WENN SICHERHEITSVERRIEGELUNG

ÜBERBRÜCKT IST. NICHT, DEM STRAHL AUSSETZEN.

VARO –AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA

NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE. ÄLÄKATSO SÄTEESEEN.

- 2 -

TUNER ADJUSTMENTS

Use a plastic screw driver for adjustments.

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

Set of unit

Supply voltage : DC 10.5 V

Speaker impedance : 4 ohms

Standard output : 50 mW

Function switch : RADIO

a. Parts Location

MAIN PCB (Top View) MAIN PCB (Bottom View)

TP44

TP42

GND

FMANT

TP45

TP43

FMGND

C80

C84

a. AM Adjustment Band switch : AM

Connections

Step Adjusting

Circuit Input Output

Frequency

Position of

Tuning dial Adjustment VTVM

Oscilloscope

1 IF Connect sweep

generator to TP45

Connect sweep

generator to TP43 450 KHz Low T2

2 522 KHz Low end T1

Tuning

coverage

Connect Digital meter

to TP42 and GND 1629 KHz High end Checking

VT: Low: 1.3 ± 0.1V

High: 7.3 ± 7.8 V

4 612 KHz 612 KHz MW ANT

5 Tracking Connect AM SG to test

loop

Connect VTVM to

speaker terminals 1404 KHz 1404 KHz C84 Max.

b. FM Adjustment Band switch : FM FM Dummy antenna : 75 ohms unbalance

Connections

Step Adjusting

Circuit Input Output

Frequency

Position of

Tuning dial Adjustment VTVM

Oscilloscope

1 IF Connect sweep

generator to TP44

and GND

Connect sweep

generator to TP43

and GND

10.65 MHz Low Checking

2 76 MHz Low end L3

Tuning

coverage

Connect Digital meter

to TP42 and GND 3 CH High end Checking

VT: Low: 1.6 ± 0.1V

High: 8.0 ± 8.8 V

4 78 MHz 78 MHz L4

5 Tracking Connect FM SG to FM

ANT and FM GND

Connect VTVM to

speaker terminals 3 CH 107.75 MHz C80 Max.

This is a basic tuner adjustments.

- 3 -

WIRING CONNECTION

P/N:25-60070-24

2 4 PI N FP C C ABLE P-0.5L=70 MM

P/N: 20-41042-41

4PINUL2651#28P=2 L=160MM

P/N:20-61031-20

3PINHGUL2547#28P=2L=250/3MM

P/N:20-42021-64

2PINHG#26UL L=130/4MMP=2.5

P/N: 20-61031-19

3PINHGUL2547#28P=2 L=140/3MM

P/N:20-62031-41

3PINUL2547#28P=2.5L=150/3MM

This is a basic wiring connection.

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