Panasonic rx dt 707 service manual

Page 1

Service

Portable Stereo CD System

un- M ASH

Fr COMPACT

0 USE

DIGITAL AUDIO

maltrmge noise shaping

ORDER NO. ADSSOZOSOCZ

anual

Radio Cassette

RX- DT707

Colour
(K) ........ Black Type
Areas
Suffix for
Model No. Area Colour

(EB) Great Britain

(K)

(EG) Europe and Germany

TAPE DECK: RX-FDS5 MECHANISM SERIES (AR300)
TRAVERSE DECK: SL-CH550 MECHANISM SERIES (RAE0111Z)

I SPECIFICATIONS

General:
Power Requirement:

Power Consumption:
Power Output:

Speaker:

Inputs:

Outputs:
Dimensions:

Weight:

Disc Player Section:
Sampling Frequency:
Decording:

Beam Source:

No. of Channels:

Frequency Response:

Wow and Flutter:
D/A Converter:

AC; 230~24O V, 50 Hz

Battery; 15 V (10 R20/LR20, UM-1
batteries)
Memory Backup for Computer/
Clock;
6 V (4 R6/LR6, UM-3 batteries)

57 W

Low oh; 11.6 W><2 (PMPO)

High ch; 4.2 W><2 (PMPO)

Woofer; 10 cm PM Dynamic speaker
2.70

SquawkerTweeter; 8 cm PM Dynamic

speaker 80

MIX MIC; 2.5 mV, 200~600Q $3.5

AUX; 200 mV, 47 kt)

HEADPHONES; 32!), (2)35

CD OUT; 1 v (CD 0 dB)

710 (W)><205 (H)><263 (D) mm

(When the top panel is open)

80 kg without batteries

44.1 kHz

16vbit linear
Semiconductor laser
(wavelength 780 nm)

2 channels, stereo
20N20,000 Hz (+1, -2 dB)
Unmeasurable

MASH (1 BIT DAC)

Notes:

Radio Section:
Frequency Range: FM; 87.5~108 MHz
LW; 144~288 kHz
MW; 522~1611 kHz
Intermediate Frequency: FM; 10.7 MHz

AM (LW/MW); 459 kHz

FM; 5 pV/0.1 mW output

(-3 dB Limit Sens.)

LW; 100 uV/m/OJ mW output (Max)

MW; 56.3 Wm/0.1 mW output (Max)
Tape Deck Section:
Frequency Range: 30~16.000 Hz (with normal tape)
30~ t 7.000 Hz (with CrOz tape)
30~18,000 Hz (with METAL tape)
AC bias, AC erase (Deck 2)
4.8 cm/sec.
Variable sound monitor
4~track 2-channel stereo recording and
playback

Recording System:
Tape Speed:
Monitor System:
Track System:

*1 Dolby noise reduction manufactured under license from Dolby
Laboratories Licensing Corporation.
Dolby and the double-D symbol are trade marks of Dolby
Laboratories Licensing Corporation.

*2Technics (or Panasonic) developed the worlds first MASH
type DAC and ADC. MASH technology was invented by NTT
(LSI Labs).

MASH is a trademark of NTT.

1. Weights and dimensions shown are approximate
2. Design and specifications are subject to change without notice.

Panasonic

Page 2

RX-DT707

I CONTENTS

Page
IPRECAUTION OF LASER DIODE . . . 2
OLOCATION OF CONTROLS .SNS
OTIME ADJUSTING .......... . 6
ODISASSEMBLY INSTRUCTION .. 7~18
OSCHEMATIC DIAGRAM .......... 19~34
OPRINTED CIRCUIT BOARD DIAGRAM . 35~41
DWIRING CONNECTION DIAGRAM . . . . 42, 43
OPREPARATIONS FOR CHECK AND ADJUST

P.C.B. .................................. 44~48
OMEASUREMENTS AND ADJUSTMENTS 49~52

I PRECAUTION OF LASER DIODE

CAUTION: This product utilizes a laser diode with the unit turned on", invisible laser radiation is emitted from the pick up lens.

Wave length: 780 nm

Maximum output radiation power from pick up; 100 uWNDE

Page
ONEW DIGITAL SERVO CIRCUIT 53
OSELF DIAGNOSTIC FUNCTION. . . . 54
'TROUBLESHOOTING GUIDE 55~56
OFUNCTION OF IC TERMINALS . 57~61
.BLOCK DIAGRAM ............ 62~68
IREPLACEMENT PARTS LIST
OPACKAGING .............
OCABINET PARTS LOCATION . ,

OMECHANISM PARTS LOCATION . .
OLOADING UNIT PARTS LOCATION ..........

Laser radiation from the pick up unit is safety level, but be sure the followings:

1. Do not disassemble the optical pick up unit, since radiation trom exposed laser diode is dangerous.
2, Do not adjust the variable resistor on the pickup unit. It was already adjusted.

3. Do not look at ihe locus lens using optical instruments,
4. Recommend not to look at pick up lens for a long time.

ACHTUNG: Dieses produkt enthéilt eine Iaserdiode. Im eingeschalteten zustand wird unsichtbare laserstrahlung von der lasereinheit abgestrahit.

Wellenlénge: 760 nm

Maximale strahlungsleistung der laserinhelt: 100 pW/VDE

Die strahlung an der lasereinheit ist ungeiéhrllch, wenn iolgende punkte beachtet wercien:

99!?

Nicht iiber Iangere zeit in die iokussierlinse blicken.

CLASS 1
LASER PRODUCT

LUOKAN 1 LASERLAITE
KLASS 1 LASER APPARAT

Die lasereinheit nichi zerlegen, da die strahlung an der Ireigelegten laserdiode getaihriich isl.
Den werksseitig justierten einstellregler dsr lasereinreit nicht verstellen.
Nicht mit optischen instrumenten in die fokussierlinse blicken.

use! Avuuem 5a
suajIItIIus nnltmum
om Ittiina nihylnitfirn
Igwsiuiiyue.

All km film's.

ADVAfiSEL: USYNLIG IASERS'I'RAUNB
VEII ANNE.

Mn antennas»
mums ER no: AF FUNKTIOHL

unnsix unsmELse run smAuus.

VARNINGI Daynliq
Imrstdlning nir item:
an i! opp-m och
spire" ir mwuu,
Belraltll oi sit-lion.

VORSIClIT-Unsichtharu
Lasarstrahltmu, worm

DANGER-Imam
Instr radiation Mu:

oneaseu Usynlig
Inersttiling Mr daksei

Abdeckunu ooliffrwt. m _ inn» og slkhnmislls
mm «m su-M . FXEIIE'IEéEEIi. mam...

IIISSEIM.