Technics SADH 30 Service Manual

Page 1

ORDER NO. MDQSOSOGOCZ

c ervice Manual

coMpAc'r 2r Compact Audio System
[j] D5® MASH
-
DIGITAL AUDIO >
Colour
(K) ........ Black Type
Area
Sufiix for
Model No. Area C°'°
(EB) Great Britain (K)
System Name Unit
SB~DHSO SA-DHSO SB-DHSO SA-DHSO (EB) Music Center
SC-DHSD (EB) SB-DHBO (E) Speaker
(Made in PAES)
TAPE DECK : MECHANISM SERIES (SG-ZOW)
TRAVERSE DECK : NEW MECHANISM SERIES (RAE0111Z)
I SPECIFICATIONS
I AMPLIFIER SECTION
Frequency response
AUX . 25 HZ ~ 5 kHZ (-SdB) ICASSETTE DECK SECTION
Input SGNSIVIW and impedance Track system 4 track, 2 channel
Aux - 250 mV/33.8 k9 Heads , _
Graphic equalizer +10 13 Playback Solid permailoy head
. (100 Hz, 330 Hz, 1 kHz, 3.3 kHz, 10 kHz) Record/playback Solid permalloy head
Load Impedance 49 Erasure Double gap ferrite head
Motor DC servo motor
I FM TUNER SECTION . Recording system AC bias, 100 kHz
Frequency range 87.50 ~ 108.00 MHZ Erase system AC erase, 1°70 KHZ
Sensitivity 233 (Bi (4.0 uv, [HF' 58) Tape Speed 4-8 0' lseC- (1 4: IDS)
Total harmonic distortion Frequency response
MONO 06 % NORMAL 50 Hz ~ 14 kHz, +1. - 5 dB
STEREO 0.7 % Wow and flutter 0.15 % (WFtMS)
SIN Fast forward and rewind time
_ MONO 60 dB (65 dB, lHF) Approx. 120 seconds with C-GO cassette tape

Frequency response

. Image rejection at 98 MHz
Stereo separation an kHz
Antenna terminal(s)

IAM TUNER SECTION

Frequency range,
MW

LW

Sensitivity (for 50 mW)
MW (at 999 kHz)
LW (at 216 kHz)

Notes :-

50 HZ ~15 kHZ. +0.5 dB, - 2 dB

35 dB I CD SECTION
35 dB Sampling frequency 44.1 kHz
759 (unbalanced) Decoding 16 Bit linear
Beam source] wavelength Semiconductor laser/ 780 nm
Number of channels 2 CH, STEREO
Frequency response 20 Hz ~ 20 kHz (+1, - 2 dB)
522 .. 1611 kHz SIN 90 dB (A curve filter)
144 _ 233 kHz Dynamic range 85dB
Wow and flutter Unmeasurable
141pV/m Digital filter 4 time over sampling
175 llV/m D/A converter Mum-stage noise shaping

1, Specifications are subject to change without notice
Weights and dimensions are approximate

2. Total harmonic distortion is measured by the digital spectrum analyzer.

Panasonic

. Technics (or Panasonic) developed the world's first
MASH type DAC and ADC. MASH technology was
invented by N'l'l' (LSI labs).

' MASH is a trademark of NTT.

Page 2

SA-DH30

ISPEAKER SYSTEM
Type . 2 way 2 speakers
Speaker(s)
Woofer 12 cm cone type
Tweeter Piezo type
Impedance 4 (2
Input power 6 W (music)
a w (DJN)
Ouput sound pressure level 88 dB/W (1.0 m)
Cross over frequency 10 kHz
I CONTE NTS
- PAGE
~ PRECAUTION OF LASER DIODE ................................................ 2

HANDLING PRECAUTIONS FOR TRAVERSE DECK
0 FRONT PANEL CONTROLS AND FUNCTIONS .. - 6
- REMOTE CONTROL UNIT CONTROLS AND FUNCTIONSJ & B
- DISASSEMBLY INSTRUCTIONS ...................................
° TERMINAL GUIDE OF IC'S ,TRANSISTORS & DIODES. .
' SCHEMATIC DIAGRAM ...................................................... 17 ~ 27
° PRINTED CIRCUIT BOARD ..
' FUNCTION OF IC TERMINALS.

Frequency range

65 Hz ~ 20 kHz (-16 dB)

Dimensions (W x H x D) 200 x 345 X 196 mm
Weight 2.7 kg
I GENERAL
Power consumption 40 W
Power supply AC 230 ~240V, 50 Hz
Dimensions (W x H x D) 270 x 345 x 214 mm
Weight 45kg
PAGE
0 MEASUREMENTS AND ADJUSTMENTS .......................... 40 ~ 45

' CD LOADING UNIT PARTS LOCATION
' TROUBLESHOOTING GUIDE
0 WIRE CONNECTION DIAGRAM
. BLOCK DIAGRAM ...................
' CD LOADING UNIT PARTS LIST
' MECHANISM PARTS LIST .........
- MECHANISM PARTS LOCATION
- CABINET PARTS LOCATION.

- INTERNAL CONNECTIONS OF LCD - REPLACEMENT PARTS LIST.... 62 ~ 66
' DIGITAL SERVO SYSTEM ................................................. 38 & 39 ' RESISTORS & CAPACITORS ............................................ 67 ~ 70
CAUTION:

THIS PRODUCT UTILIZES A LASER .

USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCES OR PROCEDURES OTHER THAN THOSE SPECIFIED
HERIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE .
DO NOT OPEN COVERS AND DO NOT REPAIR YOURSELF. REFER SERVICING TO QUALIFIED PERSONNEL.

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

Laser radiation from the pick up lens is within safety Ievei ,but take precaution on the followings:

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

3. Do not look at the focus lens using optical instruments .

4. It is Not advisable to look at the pick up lens for a long period of time .

RQLSOOZ1

ADVARSELzusVNLIs LASERSTFIALING
VED ABNING, Mn SIKKEHHEDSAF
BHYDERE EH UDE AF FUNKTION.
unnsA UDSIE'I'I'ELSE FOR STl-lALING

VORSlCHT-Unsiohlbare DANGER-Invisible

Laserslrahlung, wenn laser radiation when
Abdeckung seamen open.

Nichl dam Slrahl AVOID DIRECT EX-
aussstzen. RQLSDOZl POSUFIE TO BEAM.

RQT43892AA

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