Panasonic rx ed 707 service manual

Page 1

ORDER NO. MD981014SCS

Service Manual

Stereo Radio Cassette Recorder

MASH*

COMPACT

DIGITAL AUDID

TAPE DECK
TRAVERSE DECK

I Specifications
I RADIO

Frequency Range
522-1629 kHz (9kHZ steps)
520-1630 kHz (10kHz steps)

FM 87.5 -108 MHz (50kHz steps)
Intermediate Frequency

AM 450 kHz

FM 10.7 MHZ
Sensitivity

AM 42 dB/m/SO mW

FM 18 dB/SO mW

(>3 dB limit sens.)

I TAPE RECORDER
Track system 4 track, 2 channel, stereo
Recording system AC bias
Erasing system AC erase
Monitor system Variable sound monitor
Frequency range
Normal position
High position

30 - 16000 HZ
30 - 17000 HZ

: AR2 MECHANISM SERIES
: RAE0152Z MECHANSIM SERIES

Radio Cassette

RX-ED707

Colour
(8) ........ Silver Type
Area
ASE-33:32. Area Colour
(GO) Middle Near East (3)
(GT) Taiwan

_ _ASH' Is a trademark of N'Il'.

WARRANTY
Panasonic / Technics
I CD PLAYER
Sampling frequency 44.1 kHz
Decoding 16 bit linear

Beam source
No. of channels
Wow and flutter

Semiconductor laser (wavelength 780 nm)
2 channel, stereo
Below measurable limit

D/A converter MASH (1 bit DAC)
I General
Power requirement
AC 110-127 V/220-240 V, 50/60 Hz
Power consumption: 33 W
Battery 12V ( Eight H20/LR20 D size, Um~1 batteries)
Memory back-up for
computer/clock 6V [Four R6/LR6 ( AA, UM~3) batteries]
Speakers
Super woofer 8 cm 6.0 9 x 1
Full Range 8 cm 6.0 Q x 2
Jacks
Output PHONES: 3.5 mm stereo ( 16-64 9)
input AUX IN: 3.5 mm stereo

Dimensions ( W x H x D) 630 x 177 x 326 mm

(Top panel closed )

Notes : Weight About 6.3 kg without batteries
1. Weights and dimensions shown are approximate.
2. Design and specifications are subject to change without
notice.
[A WARNING

This service information is designed for experiense repair technicians only and' Is not designed for use by the general public It does not contain
warnings or cautions to advise non technical individuals of potential dangers in attempting to sen/Ice a product. Products powered by electricity
should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product or products dealt with
in this service information by anyone else could result' In serious injury or death.

Panasonici

© 1998 Malsushita Electronics (8) Pte. Ltd.
All rights resented. Unauthorized copying
and distribution is a violation of law.

Page 2

RX-ED707

I Contents

BEFORE USE [FOR (60) area]
ACCESSORIES .......................
HANDLING PRECAUTIONS FOR

TRAVERSE DECK ......................................................... 2 ~
PRECAUTION OF LASER DIODE.
USE OF CAUTION LABELS
CHANGING OF SOUND QUALITY
RECORDING RADIO PROGRAMS AND
TAPE TO TAPE
SETTING CLOCK AND SELECTING DISPLAY .
SELF DIAGNOSTIC FUNCTION 7
OPERATION CHECKS & MAIN COMPONENT

° WIRING CONNECTION DIAGRAM
° TROUBLESHOOTING GUIDE
' MEASUREMENTS AND ADJUSTMENTS

TERMINAL GUIDE OF ICS, TRANSISTORS
& DIODES .............................
TERMINAL FUNCTION OF ICs
LOADING UNIT PARTS LOCATION
MECHANISM PARTS LOCATION .....
CABINET PARTS LOCATION
MECHANISM PARTS LIST ..
LOADING MECHANISM PARTS LIST
REPLACEMENT PARTS LIST ...........

REPLACEMENT PROCEDURES
SCHEMATIC DIAGRAM ..............
PRINTED CIRCUIT BOARD

..8~12 -
13~24 0
25~30 0

RESISTORS & CAPACITORS ..................
PACKING MATERIALS & ACCESSORIES

I BEFORE USE

[FOR (GC) area]

Be sure to disconnect the mains cord before adjusting the voltage selector.

Use a minus(-) screwdriver to set the voltage selector (on the rear panel) to the voltage setting for the area in which the unit will be used.

(If the power supply in your area is 117V or 120V, set to the 127V" position.)

Note that this unit will be seriously damaged if this setting is not made correctly. (There is no voltage selector for some countries; the correct
voltage is already set.)

I Accessories

AC power supply cord .......... 1 pc. AC power plug adaptor .......... 1 pc. Ftemote control transmitter

(EUR644861)

..1 pc.

I Handling Precautions For Traverse Deck

The laser diode in the traverse deck (optical pickup) may break down due to potential difference caused by static electricity of Clothes or
human body. So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup).

- Handling of traverse deck (optical pickup)

1. Do not subject the traverse deck (optical pickup) to static electricity as it is
extremely sensitive to electrical shock.

2. To prevent the breakdown of the laser diode, an antistatic shorting pin is
inserted into the flexible board (FFC board).
When removing or connecting the short pin, finish the job in as short time
as possible.

3. Take care not to apply excessive stress to the flexible board (FFC board).

4. Do not turn the variable resistor (laser power adjustment). it has already
been adjusted.

Lens
(Do not touch)
/

Flexible board
FPC
(Handle it carefully)

Van'able resistor

No.5 Pin (GND) No.4 Pin (LB) (DU "0 turn)