Akai AT M5 AT M5 L Service Manual

Page 1

QUARTZ SYNTHESIZER TUNER

moon AT-M5 / L

STEREO INTEGRATED AMPLIFIER

MODEL AM-M5
MODEL AM-M7

Page 2

ABBREVIATIONS FOR SERVICE MANUAL
MODEL AT-M5/ L, MODEL AM-M5/ M7

EXPLANATION

ABBREVIATION EXPLANATION ABBREVIATION
AC Alternating Current LSI Large-Scale Integration
AF Audio Frequency LW Long Wave
AFC Automatic Frequency Control MANU MANUal
AGC Automatic Gain Control MC Memory Control
ALC Automatic Level Control MIX MIXer
AM Amplitude Modulation MM Moving Magnet (cartridge)
ANT ANTenna M. MB Memory
APPROX APPROXimately MONO MONOphonic
BCD Binary Coded Decimal MPX MultiPleX
BUF BUFfer NF Negative Feedback
CK ClocK OSC OSCillator
CMOS Complementary Metal-Oxide RL ReLay
Semi'conducmf PLL Phase Locked Loop
CPU Central Processing Unit PSC PreSC ale r
DET D ETector RAM Random Access Memory
EIAJ Electronic Industry Association RCH Right CHannel
of Japan
REG REGulator
EQ EQualizer
RF Radio Frequency
FF Flip-Flop
ROM Read Only Memory
FLD FLuorescent Display
SEG SEGment
FM Frequency Modulation
SENS SENSitivity
FREQ FREQuency
SM Signal Meter
GND GrouND
. SSG Standard Signal Generator
H High (referring to voltage)
ST STereo
IF Intermediate Frequency
STO STOre
IHF Institute of High Fidelity
SW SWitch
IND INDicator
SYNC SYNChronize
INH INHibit
THD Total Harmonic Distortion
INT INTerrupt
_ VC/O Voltage Controlled Oscillator
L Low (referring to voltage)
XT Crystal Controlled Connection
LCD Liquid Crystal Display .
Terminal
LCH Left CHannel
XTAL C TAL
LED Light Emitting Diode ys
LPF Low Pass Filter

Page 16

TD6301P

a! bl cu d: 01 fl 9x a: he 02 d2 ea f2 92 as b3 cs d3 93 f3 03 HO
2i 2232425 6 [3l5l6l7l8l92 6 7 B SIOII I2 5
DATA 2 _,'_ 7 sure DRIVER 7 see DRIVER 7 see DRIVER DRIVER
CK l 3 25
'5:
CK 2 4 8 5 ,
L/D l L
* LATCH '9 LATCH LATCH LATCH
r:
In
t-
g / LL\ 4 AJ\
0 ADDER ADDER ADDER
GRD I4 9 , A 4-
i 4
Vcc 2 g
o BINARY T0 BOD + IF OFFSET ROM
3
o
TD6301AP
L Pin Nor Symbol Description
i 1 L [D Output Select Signal Input Terminal (To change the output for various
display such as LED, FLD & LCD)
2 Dat Receiving Frequency Data Input Terminal
a (Serial Input from System Controller L51)
3 CKI Control Timing Input Terminal for Receiving Frequency
CKQ Data Input (Simultaneously W/Data from System Controller LSI)
Segment Driver Output Terminal for:
5 1/0 FM: 100S MHz
AM: 10005 kHz
6 a3 7 SEgment Driver Output Terminals for:
S 8 FM: 105MHz
12 g3 AM: 1005 kHz
13 a2 7 Segment Driver Output Terminals for:
115 8 FM: 18 MHz
20 g2 AM: 10s kHz
21 a1 7 Segment Driver Output Terminals for:
S 8 FM: 100s kHz
27 gl AM: 18 kHz
14 l vcc +sv
28 GND Ground

14

SERVICE MANUAL AT-MS/L