Akai AA 1010 AA 1010 L Service Manual

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II.
III.

VI.

VIL
VIII.
IX.

SECTION I

SERVICE MANUAL

TABLE OF CONTENTS

TECHNICAL DATA ....................................................... 2
DISMANTLING 0F UNIT ................................................... 4
CONTROLS ............................................................. S
PRINCIPAL PARTS LOCATIONS .............................................. S
VARACTOR TUNER AND PRESET TUNING SYSTEM .............................. 6
1 VARACTOR TUNER ................................................... 6
2. PRESET TUNING SYSTEM ............................................. 9
TUNER ADJUSTMENT ..................................................... IO
1 FM SECTION ADJUSTMENT ............................................ 10
2 LW SECTION ADJUSTMENT ............................................. 12
3. MW SECTION ADJUSTMENT ............................................. 13
MAIN AMP ADJUSTMENT .................................................. l4
TUNING CORD THREADING ................................................. IS
CLASSIFICATION OF VARIOUS P.C BOARD ...................................... l6
1. RELATION 0F P.C BOARD TITLE AND IDENTIFICATION NUMBER ................. 16
2. COMPOSITION OF VARIOUS PC BOARD .................................... 17

For basic adjustments, measuring methods, and Operating principles. refer to GENERAL OPERATING PRINCIPLES AND
ADJUSTMENTS.

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I. TECHNICAL DATA

POWER AMPLIFIER SECTION
CONTINUOUS POWER OUTPUT
2-CHANNELS DRIVEN 14 Watts per channel. minimum RMS, at 8 ohms from 40 to 20,000 szith no
more than 0.8% total harmonic distortion.
POWER BANDWIDTI'I (IHF) 15 Hz to 40 kHz/8 ohms, distortion within 0.8%
SIGNAL T0 NOISE RATIO (IHF) PHONO Better than 75 dB
AUX Better than 90 dB
RESIDUAL NOISE Less than 0.8 mV at 8 ohms
CHANNEL SEPARATION (IHF) PHONO Better than 50 dB at 1,000 Hz
DAMPING FACTOR More than 30 (1 kHz, 8 ohms)
OUTPUT SPEAKERS A, B (4 to 16 Dhms)/A+B (E to 16 ohms)
HEADPHONE 4 to 16 ohms
PRE AMPLIFIER SECTION
INPUT SENSITIVITY/IMPEDANCE
PHONO 3 mV/47 k ohms
AUX 150 mV/IOO k ohms
TAPE MONITOR PIN: 150 mV/JOO k ohms
DIN: 30 mV/180 k ohms
OUTPUT LEVEL] IMPEDANCE
TAPE REC PIN: 150 mV/IOD k ohms
DIN: 150 mV/IOO k ohms
FREQUENCY RESPONSE PHONO (RIAA) 30 Hz lo [5 kHz 1] dB
TUNER/AUX/TAPE MONITOR 10 Hz to 70 kHz +0 dB, -2 dB
TONE CONTROL BASS in) dB at 100 Hz
TREBLE ilO dB at 10 kHz
LOUDNESS CONTROL 4'10 dB at 100 Hz, +5 dB at 10 kHz
(Volume control set at -30 dB position)
FM TUNER SECTION
FREQUENCY RANGE 88 MHz to 108 MHz
SENSITIVITY (II-IF) 2.0 V
CAPI'URE RATIO 1.5 dB
SELECTIVITY (IHF) More than 60 dB
IMAGE REIECIIDN More than 55 dB (98 MHZ)
IF REJECT ION More than 70 dB (98 MHz)
SPURIOUS REJECTION More than 70 dB (98 MHZ)
AM SUPPRESSION 50 dB
SIGNAL T0 NOISE RATIO 60 dB
HARMONIC DISTORTION MONO Less than 0.3% (100% modulntion)
STEREO Less than 0.6% (100% modulation)
TUNING INDICATOR Centei Tuning meter and Frequency Indicator meter
STEREO SEPARATION More than 40 dB (1 kHz)
SUBCARRIER SUPPRESSION More than 50 dB
ANTENNA INPUT IMPEDANCE 300 ohms balanced, 75 ohms unbalanced