Mitsubishi da u12 service en

Page 1

MITSUBISHI

T AUDIO SYSTEMS

SERVICE MANUAL

STEREO INTEGRATED AMPLIFIER
MODEL DA-UIZ

Aura-u. (H {In

7 Down llHl

IIII - - * - -
I :

EII----l-

[THEME] [M -a

CONTENTS

SPECIFICATIONS ............................................................. 2
DISASSEMBLING PROCEDURE ................................................... 2
BLOCK DIAGRAM ............................................................ 3
INTERNAL DIAGRAMS AND PINOUT OF INTEGRATED CIRCUITS .......................... 4
WIRING DIAGRAM ............................................................ 5
SCHEMATIC DIAGRAM ......................................................... 7
PRINTED CIRCUIT BOARDS ..................................................... 9
EXPLODED VIEW ............................................................. 11
PARTS LIST ................................................................. 12
PACKING INSTRUCTIONS ....................................................... 14

J - --

AMITSUBISHI I-:LE_OTRIc CORPORATION

Page 2

SPECIFICATIONS

Min. RMS power output ............................... 25 watts 8 ohms 1 kHz
0.5% THD
Total harmonic distortion
PHONO MM ....................................... 0.05% (half power)
AUX, PLAY ....................................... 0.05% (half power)
Intermodulation distortion ................................ 0.05% (half power)
Frequency response
PHONO MM ................................... 10.5 dB, 20 Hz to 20 kHz
AUX, PLAY ................................... i0.2 dB, 20Hz to 20 kHz
Input sensitivity/impedance
PHONO MM ........................................ 2.5 mV/50k ohms
AUX, PLAY ........................................ 150 mV/50k ohms
Maximum input level
PHONO MM ............................................... 100 mV
Output level/impedance
REC OUT .......................................... 250 mV/600 ohms
HEADPHONES ........................................ 15 mW/8 ohms
Signal to noise ratio (IHF A Network)
PHONO MM ................................................ 74 dB
AUX, PLAY ................................................ 90 dB
Signal to noise ratio (DIN)
PHONO MM ................................................ 63 dB
AUX, PLAY ............................ ., ................... 75 dB
Tone control
BASS .............................................. $10 dB (100 Hz)
TREBLE ............................................ $10 dB (10 kHz)
Loudness .................................. +7 dB (100 Hz), +5 dB (10 kHz)
Power consumption ......................................... 1 10 W (IEC)
DimensionlexHxD) .................. 424x105x260mm
(16-11/16 x 4-1/8 x 10-1/4)
Weight ................................................. 4.4 kg (9.7 lb)

Design and specifications are subject to change without notice for improvement.

DISASSEMBLING PROCEDURE

1) How to remove top cover 2) How to remove bottom cover
Remove six screws in Fig. 1 and remove top cover. Remove two screws A in Fig. 2 and pull bottom cover
toward the rear panel for removal.
3) How to remove front panel

Remove five screws B in Fig. 2 and remove front panel
with P.C.B. mounted.