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ORDER NO. MD9504048C2
MASH , ISO Portable Stereo Component CD System
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TAPE DECK : SG-20W MECHANISM SERIES
TRAVERSE DECK : RAE0113Z MECHANISM SERIES
E Specifications
ERADIO HTAPE RECORDER
Frequency range Track system 4 track, 2 channel, stereo
FM 87.5— 108.0 MHz Recording system AC bias
MW 522 — 1611 kHz Erasing system Multi Pole Magnet
LW 144 — 288 kHz Monitor system Variable sound monitor
Intermediate Frequency Frequency range
FM 10.7 MHz Normal 80 — 14000 Hz
AM 459 kHz
Sensitivity E GENERAL
FM 14.5 dB/50 mW Power requirement
MW 53 dB/m/50 mW AC 230 — 240 V, 50 Hz
LW 61dB/m/50 mW Power consumption: 52 W
Battery 15V (Ten R20/LR20, UM-1 batteries)
BCD PLAYER Memory back-up for
Sampling frequency 44 1 idiz os ноиий 6V (Four R6/LR6, UM-3 batteries)
Decoding 16 bit linear in iii
Beam source Semiconductor laser (wavelength 780 nm) эт я is ee
No. of channels 2 channels, stereo Jacks TOS SR
obi Response 20 Hz — 20 AR Input MIX MIC: 5mV (600)
Dynamic Range 86 dB Output Speaker; 2.70
Digi : Headphones; 320
gital Filter 41s Dimensions (WxHxD 643 x 251 x 239
Wow and flutter Less than possible measurement data Ee ; | > 4 EY
D/A converter MASH (1 bit DAC) dri sr pe
Speaker box; 170 x 240 x 201 mm
Weight 6.9 kg without batteries
Notes :
Specifications are subject to change without notice.
Weight and dimensions shown are approximate.
A WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the gerenal public. It does not contain
warnings or cautions to advise non-technical individuals of potential dangers in attempting to service 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.
e ® © 1995 Matsushita Electronics (S) Pte Ltd
| All rights reserved. Unauthorized copying
and distribution is a violation of law.
Pe\rreisonie RÉ DT 9590) Gre r Aron
RX-DT650
BM Schematic Diagrams
(All schematic diagrams may be modified at any time with the development of new technology)
Note :
< for Control circuit > (Page 26 - 27)
* 5821 Edit HIGH/NORMAL speed switch * SW813 : Tuning down switch
e SW801 Power switch * SW814 - Tuning up switch
* SW802 - Easy CD record switch * SW815 Tape switch
* SW803 : Memory switch * SW816 Tuner/band switch
* SW804 : Reverse search switch * SW817 CD switch
* SW805 - Forward search switch * SW818 ; XBS switch
* SW806 Repeat switch * SW819 Tuning memory switch
* SW807 : Stop/clear switch * SW820 : FM mode/B.P. switch
* SW808 Play/pause switch * VR301-1 ~ VR301-2 : Equaliser control (330H2)
* SW809 Volume down switch * VR302-1 - VR302-2 : Equaliser control (1kHz)
* SW810 Volume up switch e VR303-1 - VR303-2 : Equaliser control (3.3kHz)
e SWB11 Preset down switch * VR304-1 ~ VR304-2 : Equaliser control (10kHz)
e SW812 : Preset up switch * VR305 Balance control
< for Servo circuit > (Page 28 - 29)
* S701 Reset switch
< for Main circuit & Power circuit> (Page 30 - 34)
e SW901 : AC IN switch (JK901)
< for Deck circuit and Connector circuit > (Page 35)
e S601 Deck 1 play switch.
* S602 - Deck 2 playswitch.
* 5603 Rec switch.
* SW870 - CD open/close switch.
* SW871 CD loading switch.
* VR601 Tape speed control.
< Gerenal >
«Battery Current
Vol. min ..... 200mA (FM) Vol. max ..... 430mA (FM)
200mA (MW) 410mA (MW)
200mA (LW) 400mA (LW)
277.4mA (Tape) 490mA (Tape)
380mA (CD) 920mA (CD)
Recording ..... 320mA
Measurementcondition:
Radio . FM60dB, 30%$moad
AM 74 dB/m, 30%mod
Tape : 315 Hz, OdB
CD : 400Hz, -10dB
*Signal line
— : +Bline (ИР : Playback signal line Mae : AM signal line
: FM OSC signal line ИИ 77 : Record signal line НВ» : АМ О5С signal line
. FM/AM signal line ss ı CD signal line
77 - Mainsignal line — >: FMsignalline
* The voltage value and waveforms are the reference voltage of this unit measured by DC electronic voltmeter (high impedance) and oscilloscope on the
basis of chassis.
Accordingly, there may arise some error in voltage values and waveforms depending upon the internal impedance of the tester or the measuring unit.
No mark : Playback << >> : Tape Recording (()):CD ( ) : AM < >:FM { } : Tuner
Importance safety notice:
Components identified by /!\ mark have special characteristics important for safety. Furthermore, special parts which have purposes of fire-retardant
(resistors), high-quality sound (capacitors), low-noise (resistors), etc. are used. When replacing any of components, be sure to use only manufactur-
er's specified parts shown in the parts list.
Caution!
IC, LSI and VLSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during repair.
Cover the parts boxes made of plastics with aluminium foil. *Put a conductive mat on the work table.
*Ground the soldering iron. *Do not touch the pins of IC, LSI or VLSI with fingers directly.
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