Akai AAR 22 L 32 L 42 Service Manual
This is the 122 pages manual for Akai AAR 22 L 32 L 42 Service Manual.
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Extracted text from Akai AAR 22 L 32 L 42 Service Manual (Ocr-read)
Page 2
ABBREVIATIONS FOR SERVICE MANUAL
MODEL AA-R22/L, AA-R32/L, AA-R42
ABBREVIATION EXPLANATION
A-SW Analogue SWitch
CK ClocK
C-MOS Complementary Metal Oxide Semi-conductor
CPU Central Processor Unit
fL Local oscillator Frequency divided by PLL factor
FLD Fluorescent Display
fR Reference Frequency divided by PLL factor
GND GrouND
H High (referring to voltages)
INT INTerrupt (terminal)
L Left
L Low ( referring to voltages)
LD Lock out Detection terminal
LPF Low Pass Filter
LSB Least Significant Bit
MSB Most Significant Bit
NC Not Connected
PIN Programmable counter leut terminal
PLL Phase Lock Loop
Pour Programmable counter OUTput terminal
R Right
ST STrobe
SW SW itch
SEG SEGment
VCO Voltage Controlled Oscillator
Xl' Crystal controlled connection Terminal
Page 3
AA-R32/L
STEREO RECEIVER
MODEL AA-R22 / L
MODEL AA'RBZ/L
MODEL AA'R42
THIS MANUAL IS APPLICABLE TO BOTH SILVER
AND PEARL SHADOW PANEL MODELS
SECTION 1 CIRCUIT OPERATION DESCRIPTION
SECTION 2 MODEL AA-R22/L SERVICE MANUAL ........... 33
SECTION 3 MODEL AA-R32/L, AA-R42 SERVICE MANUAL. . . . 47
SECTION 4 PARTS LIST .................................. 75
SECTION 5 SCHEMATIC DIAGRAM ........................ 98
Page 40
III. CONTROLS
36
_._.__x_._...
mmghwm-Ip
SEPTFP"?.°N.
POWER SWITCH
ACOUSTIC MEMORY BUTTONS
DEFEAT BUTTON
BASS AND TREBLE CONTROL
BALANCE CONTROL
TUNING MODE SELECTOR
FL DISPLAY
PHONO BUTTON
BAND SELECTOR
AUX BUTTON
. SPEAKER SELECTOR
. FM MODE SELECTOR
. PHONES JACK
FR ES ET STATION BUTTON
. TUNING [UP/DOWN) BUTTON
. FADER BUTTON
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
SERVICE MANUAL AAR22/L
Fig. 2-1 Controls
VOLUME (UP/DOWN) BUTTON
TAPE 1 BUTTON
TAPE 2 BUTTON
AM STEP SELECTOR (No! on some models)
RESET BUTTON
FM DE-EMPHASIS SELECTOR (Not on some models)
ANTENNA TERMINALS
AM LOOP ANTENNA
GROUND TERMINAL
PHONO JACKS
AUX JACKS
TAPE 1 REC/PLAY JACKS
TAPE 2 REC/PLAY JACKS
A AND B SPEAKER SYSTEM TERMINALS
AC OUTLETS (Not on some models
POWEH CORD
Page 59
V. CONVERSION
VOLTAGE
SE LECTOR
a m
.3.
our
AM STEP
M DE-EMPHASIS
l. VOLTAGE CONVERSION
Models for Canada, USA and Australia are not
equipped with this facility. Each machine is preset
at the factory according to destination, but some
machines can be set to 110V, 120V, 220V or 240V
as required.
Fig. 36 Rear View
If your machines voltage can be converted:
1) Disconnect the power cord from the power supply.
2) Turn the VOLTAGE SELECTOR located on the
rear panel with a screwdriver until the correct
voltage is indicated.
VOLTAGE SELECTOR
2. FM DE-EMPHASIS SELECTOR
(NOT ON SOME MODELS.)
Use this selector to de-emphasize an FM signal
encoded with Dolby NR by an amount (50 us or 75
I15) equal to the emphasis made at the broadcasting
station.
Set this selector accordng to your area.
4-D
FM
OE-EMPHASIS
DE
50ys 75p:
Fig. 3»8
SERVICE MANUAL AA-RlZ/L. AA
Fig. 3-7
3. AM STEP SELECTOR
(NOT ON SOME MODELS.)
The Akai AA-R32/42 can scan the AM frequencies in
H
AM STEP
CE
9K IOK
Fig. 3-9
55
steps of 9 kHz or 10 kHz. Set this selector according
to the broadcasting frequencies in your area. After
setting the AM STEP selector, turn on the Akai
AA-R32/42 and then depress the RESET button.