This is the 33 pages manual for Akai AM M659 Service Manual.
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1k SAFETY INSTRUCTIONS
PRECAUTIONS DURING SERVICING
1. Parts identiﬁed by the A symbol parts are critiwl for
safety Replace only with parts number speciﬁed,
2. In addition to safety, other parts and assemblies are
speciﬁed for conformance with such regulations as those
applying to spurious radiation.
These must also be replaced only with speciﬁed
Examples: RF converters, tuner units, antenna selector
switches, RF cables, noise blocking capacitors, noise
blocking ﬁlters, etc.
3‘ Use speciﬁed intemal wiringi Note especially:
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
4, Use speciﬁed insulating materials for hazardous live parts.
1) Insulation Tape
2) PVC tubing
3) Spacers (Insulating Barriers)
4) Insulation sheets for transistors
5) Plastic screws for ﬁxing microswitch (especially in
5. When replacing AC primary side components (transform-
ers, power cords, noise blocking capacitors. etc), wrap
ends of wires securely about the terminals before soldering.
6. Observe that wires do not contact heat producing parts
(heatsinks, oxide metal ﬁlm resistors, fusible resistors,
7. Check that replaced wires do not contact sharp edged or
8. Also check areas surrounding repaired locations.
9. Use care that foreign objects (screws, solder droplets, etc.)
do not remain inside the set.
SAFETY CHECK AFTER SERVICING
Conﬁrm the speciﬁed insulation resistance between power
cord plug prongs and externally exposed parts of the set is
greater than 10 M ohms, but for equipment with external
antenna terminals (tuner, receiver, etc.) and is intended for
or , speciﬁed insulation resistance should be head—
phone jacks, line-in-out jacks, etc. more than 2.2 M ohms
(ground terminals, microphone jacks).
PRECAUTIONS FOR LITHIUM BATTERY
The lithium battery may explode when heated excessivelyl
[OBSERVE THE FOLLOWING WHEN REPLACING]
0 Replace with the same make and type only.
C Use soldering iron in “recommended way" only
0 Place battery in correct polarity.
0 Do not short the terminals
0 Do not recharge battery.
0 Do not dispose of battery in ﬁre.
[DANGER] [RECOMMENDED WAY]
SYMBOLS FOR PRIMARY DESTINATION
Alphabet indicates the destination of the units as listed below.
Symbols Principal Destinations
Europe (except UK)
W. Germany only
VOLTAGE CONVERSION (I Model only)
Before connecting the power cord, SET the VOLTAGE
SELECTOR located on the rear plate with a screwdriver so
that the correct voltage is indicated.
VI. PARTS LIST
HOW TO USE THIS PARTS LIST
1‘ This Parts List lists those parts which are considered necessary for repairs. Other common parts, such as resistors and
capacitors, are listed in the “Common List for Service Parts" from which these parts should be selected and stocked.
2 The Recommended Spare Parts List shows those parts in the Parts List which are considered particularly important
3, Parts not shown in the Parts List and “Common List for Service Parts” will not in principle be supplied.
4, How to read the Parts List
a) Mechanism Block b) PC Board
2. HEAD BASE BLOCK 6. MAIN PC BOARD
NO. PART NO. DESCRIPTION NO. PART NO. DESCRIPTION
2-ix BH-T2023A320A HEAD BASE BLOCK 6-IC1 1517324536 IC HD14049BP
2-2 HP-H2206A010A HEAD R/P PR4-BFU C 6-IC2 Iii-336801 IC MBBB41-564M
2-3 ZS~477876 PAN2DX035TL CMT GCIA 130333399 C MMY v 223M 250AC [U,E,B.S]
2-4 13536453 BIDZOXDBSTL CMT 6-CIB lac-350949 C MMY V 223M 2500c 
2-5 zG-402395 sP CS ANGLE ADJUST acre EC-338397 c MMY V 123M 125AC [C,A]
6-X1 EI-318384 OSC X’TAL NC-l BC I
SP (Service Parts) Classification Symbols for primary destination
A small “x” indicates that this part is not [AJIAAUU'S'AJ [SIISAAMFSt'ah‘O
shown in the Photo or Illustration [B] : BEAB(England) [U] : U/T(Universal Area)
' [C]:CSA(Canada) [V]:VDE(W. Germany)
* This number corresponds with the indi- [E] : CEE(Europe) [Y] : Custom Version
vidual parts index number in that figure [J]:JPN(Japan)
This number corresponds with the Figure SP (Service Parts) Classification
These reference symbols correspond with
component symbols in the Schematic
The available PC Board Blocks are listed separately.
5. When Part No. is known, Parts Index at end of Parts List can be used to locate where that part is shown in Parts List
by its Reference No. listed at right of Part No.
mm min mm» swam mum Wm ,
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wartime ‘ ‘ r