Technics SUC 909 U Service Manual

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1,;

AD9907176C2

Service Manual

Control Amplifier

SU-C909U

Colour

(K) .......... Black Type

Area

(E) .......... Europe and Russia.

SU-C909U

Remote Control ~
Transmitter

SE-ABOQS

SPECIFICATIONS

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System: su-Asos

Because of unique Intorconnectlng cables, when a component

requires service, send or bring In the ontlre system.

SU-CBOSU
SE-AQDQS

Control Amplifier
Power Amplifier

Specifications (DIN 45 500)

Input sensitivity/impedance:
PHONO MM; 2.5 mV/47 m
TUNER. CD, DVD, AUX,
TAPE 1, TAPE 21MB: 200 mV/22 kn
Total harmonic distortion (VGCA ON)
(Vol. MAX, 20 Hz - 20 kHz):
PHONO MM; 0.01 %
TUNER, CD, DVD, AUX, TAPE 1, TAPE 2IMD; 0.01 %
SIN (VGCA 0N):
PHONO MM; 75 dB (77 de. IHF 'ee)

TUNER, CD, DVD, AUX,
TAPE 1, TAPE ZIMD; 103 dB (100 dB, IHF '66)
114 dB (IHF A S=2 V rated output)
Frequency response (VGCA ON):
PHONO MM; RIAA standard curve :1 dB
(50 Hz - 15 kHz)
TUNER, CD, DVD-SCH, AUX,
TAPE 1, TAPE 2le; 3 Hz - 100 kHz (+0 dB, -3 dB)

+0 (18,-0.3 dB (20 HZ - 20 kHz)

Phone maximum Input voltage (1 kHz, RMS):
MM; so mV (IHF '66)
Tone controls:

BASS; +10 dB, -10 dB (50 Hz)

THEBLE; +10 dB, -10 dB (20 kHz)
Mutlng: -» dB
Output voltage:

TAPE 1, TAPE 2 REC OUT; 200 mV

PRE OUT; 1 V
I GENERAL
Dimensions (w x H x D): 430 x91.5 x 300 mm
Weight: 2.35 kg
Note:

0 Specifications are subject to change without notice.
Weight and dimensions are approximate.

l

A WARNING

This service intonation is designed for experienced repair technicians only and is not designed for use by the general public.

it does not contain warnings or cautious 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 prolessicnal 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,

Technics®

1. Note

Refer to the servise manual for Model No. SE-ASOSS (ORDER No. A09907177C2)
for information on Accessories, Connections, Operations and Packaging.

2. Location of Controls

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VR403:
Tone control VR (TREBLE)

- Indicated voltage values are the standard values for the unit measured by the

Dc electronic circuit tester (high-impedance) with the chassis taken as
standard. Therefore, there may exist some errors in the voltage values,
depending on the internal impedance of the DC circuit tester.

No mark : Power 0N

- Important safety notice:

Components identified by :31 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 manufacturers
specified parts shown in the parts list.

- Caution!

l0 and LSI are sensitive to static electricity.

Secondary trouble can be prevented by taking care during repair.
Cover the parts boxes made of plastics with aluminum foil.
Ground the soldering iron.

Put a conductive mat on the work table.

Do not touch the legs of IC or LSI with the fingers directly.

- Voltage and signal line

*

: Positive voltage line

II*II

: Negative voltage line

:>

: Phono signal line

-#

: Tape rec signal line

6.2. Schematic Diagram

Page 36

Note: We do not supply those items of parts marked *.