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....
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DC STEREO INTEGRATED AMPLIFIER
MODELAM. u06
ALSO APPLICABLE TO BLACK PANEL MODEL
SECTION 1 SECTION 2 SECTION 3
SERVICE MANUAL.................... 3 PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . 29 SCHEMATIC DIAGRAM ................ 42
SECTION 1
SERVICE MANUAL
TABLE OF CONTENTS
I. Il. III. IV. V. VI. VII. VIII. IX. TECHNICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DISMANTLING OF UNIT................................... CONTROLS . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . PRINCIPAL PARTS LOCATION . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . VOLTAGE CONVERSION . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . OPERATION OF PULSE POWER CIRCUIT ..... : . . . . . . . . . . . . . . . . LEVEL DIAGRAM . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .·. . . . . . . . CLASSIFICATION OF VARIOUS P.C BOARDS . . . . . . . . . . . . . . . . . . . 1. P.C BOARD TITLES AND IDENTIFICATION NUMBERS . . . . . . . . . . . 2. COMPOSITION OF VARIOUS P.C BOARDS . . . . . . . . . . . . . . . . . . . . 4 5 6 7 8 9 16 17 18 18 19
For basic adjustments, measuring methods, and operating principles, refer to GENERAL TECHNICAL MANUAL
3
I. TECHNICAL DATA
POWER AMPLIFIER SECTION
RATED POWER OUTPUT
2..CHANNEL DRIVEN POWER BANDWIDTH (lHF) SIGNAL TO NOISE RATIO (!HF) PHO NO AUX RESIDUAL NOISE CHANNEL SEPARATION (IHF) PH ONO DAMPING FACTOR OUTPUT SPEAKERS HEADPHONES 68 watts per channel, minimum RMS, at 8 ohms from 20 to 20,000 Hz with no more than 0.008% total harmonic distortion 6 Hz to 60 kHz/8 ohms (Total harmonic distortion: 0.05%) Better than 84 dB Better than 97 dB" Less than 0.5 mV at 8 ohms Better than 60 dB at 1,000 Hz More than 180 (1 kHz, 8 ohms) A, B (4 to 16 ohms)/A+B (8 to 16 ohms) 4 to 16 ohms
PREA.J.'1PLIFIER SECTION
INPUT SENSITIVITY /IMPEDANCE PHONO 1 PHONO 2 AUX TUNER TAPE MONITOR OUTPUT LEVEL/IMPEDANCE TAPE REC REC OUTPUT FREQUENCY RESPONSE PHONO (RIAA EQUALIZATION) AUX, TUNER, TAPE MONITOR TONE CONTROL BASS MIDRANGE TREBLE AUDIO MUTE LOUDNESS CONTROL MC: 80µV/10 ohms !\.IM: 3 mV/33k, 47k, lOOk ohms switchable 3 mV/47 kohms 150mVI100 kohms 150 mV/100 kohms 150 mV/100 kohms (PIN) 20 mV/100 kohrns (DIN) 150 mV/1 kohms (PIN) 150 mV/100 kohms (DIN) l V/l kohms 30 Hz to 15 kHz ±0.2 dB 6 Hz to 100 kHz +O dB, -2 dB ±8 dB at 100 Hz ±6 dB at 1 kHz ±8 dB at 10 kHz -20 dB at 100 Hz 1. 3 dB 2. 6 dB 3. 9 dB (VOLUME control -3 dB at 18 Hz -3 dB at 10 kHz
at 10 kHz 1. 2.5 dB 2. 5 dB 3. 8 dB set at -30 dB position)
FILTER SUBSONIC HIGH
MISCELLANEOUS
POWER REQUIREMENTS 120V, 60 Hz for USA and Canada 220V, 50 Hz for Europe except UK 240V, 50 Hz for UK and Australia 110V/220V/240V, 50/60 Hz internally switchable for other countries U/T 280W CSA 360W AAL 220W CEE 450W UK, SAA 510W 440 (W) x 105 (H) x 308 (D) mm (17.3 x 4.1x12.l inches) 8.3 kg (18.3 lbs)
POWER CONSUMPTION
DIMENSIONS WEIGHT
*For improvement purposes, specifications and design are subject to change without notice.
4
II. DISMANTLING OF UNIT
4
,___:.
.· 1.-l, ,, r-:--·":"·-·
.
·
ii
-.1~···_-
i
:-
~.
-· -_ .... --,
In case of trouble, etc. necessitating dismantling, please dismantle in the order shown in the photographs. Reassemble in reverse order.
BOTTOM Pt.ATE
t
1
5
SCREWS
SCR£WS
2
6
SCAE.WS
3
7
5
Ill. CONTROLS
cp ~
I
~ ~ 4~
i I AL--*1~ ra . . an a·aJi~~~· ---' ,:..w.,. :ft ? ·? ~<'.::.~;;~'f.: :___ W_I I . r I
_J__ . -1c~
'f
t'~ 6
~-- -Eq:r)~
. '· .,
.
I
!
~I
I
I
I
!
!
15
@>
i'
I
I
I
i
I
®~
~ ~
Fig. 1 Controls
1. POWER SWITCH 2. SPEAKER SYSTEM SELECTOR SWITCHES 3. FIL TEA SWITCHES 4. AUDIO MUTE 5. MODE SELECTOR 6. METER SWITCH 1. CLIPPING INDICATOR 8. 9. FLO BAR METER LOUDNESS SWITCH
19. INPUT SELECTOR 20. INPUT SELECTOR INDICATOR 21. PHONO 1 INPUT TERMINALS 22. PHONO 2 INPUT TERMINALS 23. TUNER TERMINALS 24. AUX TERMINALS 25. TAPE 1 SYSTEM REC/PLAY TERMINALS 26. TAPE 1 SYSTEM DIN JACK (Some models do not have this facility.) 27. TAPE 2 SYSTEM REC/PLAY TERMINALS 28. PRE-OUT TERMINALS 29. MAIN-IN TERMINALS
10. PHONO SELECTOR 11. HEADPHONE JACK 12. BASS CONTROL
13. MIDRANGE TONE CONTROL
· 14. TREBLE CONTROL 15. STEREO BALANCE CONTROL 16. VOLUME CONTROL 17. RECORDING SELECTOR INDICATOR 18. RECORDING SELECTOR
30. A AND B SYSTEM SPEAKER TERMINALS
31. EXTRA AC OUTLETS (Some models are not equipped with this facility.) 32. GROUND TERMINAL 33. AC CORD (Some models are equipped with an AC Inlet instead of an AC cord. Connect with an appropriate power cord.)
6
IV. PRINCIPAL PARTS LOCATION
SPEAKER
SWIT~HE'.S
LED
II
FL:) SAR METER INDI
P.~
80!..RO[Al AMlJ-6003
LOUDNESS SWITCH SW2
PHONC SE~ECTOR SWITCH SWI
I
I
J
I I
1,,,
1fi_.,.
~~
.I
HEADPHONE JACK J904
I~
BASS MIDRANGE CONTROL CONTROL VR2 VR3
TREBLE CONTROL VRI
BALANCE CONTROL VR4
VOLUME CONTROL VRI
REC SELECTOR SW!TCH SW2
..
,
INPUT SELECTOR SWITCH SWI
Fig. 2 Front View
MAIN AMP P,C BOARD AMU-GOOIA
··
RECTIFIER P.C BOARO!Al AMU-6005!U/Tl
.,,. ..;.. ...... ~................. · -
'"·'"-
~!
~ ...
,
PULSE POWER SUPPLY P.C BOARD AMU-6004A
PUSH SWITCH P.C BOARD AMU-60018
l
ir ....--·""'··:::··=t====~~:.._·~ .
~
TONE CONTROL P.C BOARD AMU-4003
SLIDE VOLUME P.C BOARD AMU-4008
Fig. 3 Top View
7
V. VOLTAGE CONVERSION
FRONT SIDE
0
PULSE POWER SUPPLY UNIT
x
[j
SWI
llOVor 220V 240V
1
SHORT PIN JACK A
LP
SHORT PIN JACK B
~~-+- FUSE (Fl, F2l ~
~
~
@
llOV AREA: 5A 250V 220Vor 240V AREA: 2.5A 250V
REAR SIDE
Fig. 4 Voltage Conversion (U/T model)
Models for Canada, USA, Europe, UK, 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 110 V, 220V or 240V as required. If voltage change is necessary, this can be accomplished as follows. 1) Disconnect AC Power Cord. 2) Loosen holding screws and remove upper cover. 3) Align the short pin jacks A and B with the position for each voltage area as shown in Fig. 4. 4) Set the slide switch located at the right hand side of the pulse power supply unit in Fig. 4. 5) Change the fuses. SA for l lOV and 2.SA for 220 to 240V following the printed instructions explicitly.
8
VI. OPERATION OF PULSE POWER CIRCUIT
The Pulse Power Circuit is composed of a high-voltage rectifier circuit, oscillator starting circuit, inverter circuit {blocking oscillator circuit), transformer circuit, rectifier circuit and smoothing circuit as shown below.
H
~
:1 I
~r
5i
Fig. 5 Schematic Diagram for Power Section
1. HIGH-VOLTAGE RECTIFIER CIRCUIT
Either the voltage doubling rectifier system, or the bridge rectifier system is selected according to the difference in the power supply voltage. That is, voltage doubling rectification is adopted for input voltage of 100 to l 20V (for the U.S. Canada and Japan), while bridge rectification is adopted for those of 220 to 240V (for Europe, etc.), to obtain a DC voltage of approximately 300V.
High-voltage Rectifier
Circuit
Inverter Circuit
Transformer Circuit
Pulse Rectifier
Smoothing Circuit
"" ~ °' 'c.d
,-0
c<
d
o<
d
°'
· I
l
I
Full-wave Rectifier
+30V
=
......
-30V
__::)
\0
~
100 to 120V: Voltage doubling r&ctiflcation 200 to 240V: Bridge rectification
TR2 & TR3
Hait.bridge Inverter {BloCking Oscillator)
Pulse Transformer
(Insulator)
F:tter
Current Status of Each Block
AC
DC
AC
DC
Fig. 6
Block Diagram
9
c6-
I
TR3//TR4
T
DI
Voltage and Current Characteristics
i,
Rl2 High Voltage imput
('=;-30V) bv2 bvl (':: 30V)
l
!
I
Rl4
C7T
TR5//TR6
Fig. 8 Diode Characteristics
Fig. 7 Principle of Starting Oscillation
50V
.....:
·.;; "' c:
(.)
0
.
bv1 ('.:;3
.,... -
....-
--
---\ -- ---Chargirig curve of C7
..,
0 a..
Start of oscillation Oscillation waveform
f0:;20KHz
TRI, TR2 OFF ' - - - - - - T R I, TR2 ON Operation of TR I, TR2
Fig. 9 Operation of TR I
2. OSCILLATOR STARTING CIRCUIT
At power switch-on, this circuit creates an initial pulse which starts the inverter circuit of the next stage. Dl is a double-directional trigger diode that quickly turns on when the voltage at both ends exceeds the breakover voltage (approx. 30V) as breakdown voltage flows through it. When the potential of C7 is raised to about 30V by switchingon the power, it will cause a positive trigger pulse to be applied to the bases of TR5//TR6, thereby starting oscillation.
IO
During oscillation, 20 kHz and 300 Vp-p square waves will appear at the intersecting point of TR3// TR4 and TR4//TR5, so that TR 1 and TR2 will will repeat the 20 kHz switching operation. That is, the potential of C7 will be discharged when they are turned on, whereas C7 will be charged when turned off. For this reason, the potential of C7 will not reach the break-over voltage of D 1, as can be seen from Fig. 9, so that D 1 will be in a high-impedance state. And the operations of these circuits are absolutely unrelated to those of other circuits.
Output waveform
RI
DC 300V
C4
I
150Vp-p
I
'
i
<'>-----
'1
I
___I_
ro.5msec -1
I
I
Alternating ON/OFF operation ot 20,000 times/sec.
Fig. l 0 Principle Diagram of Inverter
Tl: Oscillation Transformer
T2: Power Transformer
R1
DC 300V
r
TR3#TR4
.e.1
0(
Oi
@
\
-----TR5//TR6
(
J2
,R.6
R2
Fig. 11 Basic Schematic Diagram
3. INVERTER CIRCUIT (BLOCKING OSCILLATOR CIRCUIT)
As illustrated by Fig. 10, the inverter circuit alternately switches the DC voltage ON and OFF, thus converting it to square wave pulses. The switching is achieved by transistors under the use of a blocking oscillator. The operating principle is shown in Fig. 11. The 300V is divided into 150V and applied to the mid-point of C4 {Rl) and CS (R2). (This will be referred as the mid-point hereinafter.) First, a trigger pulse is applied to the base of TR3 by the oscillator starting circuit. This causes TR3 to turn on and a collector current iC2 to flow in from the mid-point. Since this current flows from Q6 to Q4 current will also be induced in Q5 and Q3. Therefore'. this current will be fed back to coil 22 of TR3's base, following flux variations in T 1 (Troidal trans-
former) which accompany current variations in Q3. As this loop is formed in a direction that realizes positive feedback, collector current iC2 will continue to increase with the increase in the base current of TR3. As a result, the current flowing through Q3 will also continue to increase, causing the flux density to become higher and to eventually reach saturation after the passage of a certain time. When the flux saturates so that the flux no longer varies, the Q3 to Q2 loop will be disconnected as a result. However, even after this positive feedback loop has been disconnected, collector current iC2 will continue to flow for a while, due to the action of the counter electromotive force that works in the direction that permits continued current flow. But, soon, the collector current will start to decrease rapidly.
11
TR2 ON (TR3 OFF) Period
L J1 &
TR3//TR4
r
T1
T2
i,3
11
£5
I
!
I
I
® 300V'-......
I
)~ ~(u3
12
14
)
16
R2
L
i
TR5//TR6
)
-t,C1
®
Point Voltage
300V - - - - - - - . . . . . ,
@ Saturation -
T1 saturates due to i.2.3. Discharge energy that has accumulated in the respective inductances.
ov
lei
(Dic1
11eneroted by TR3//TR4 rrig9er.
(2:,
Due to the rapid drop in iCl, a positive pulse is generated ad.1.
(bl Positive feedback loop.
Fig. 12 TR3//TR4 tum-on period
During the above process, TR5//TR6 will be turned on, while TR3//TR4 will be "cut-ofr'. This is because coil Ql of TR3//TR4's base is wound in a direction opposite to which Q2 is wound, so that an inversedirection voltage will be induced for TR3//TR4's base-emitter potential V BE. For this reason, the potential of the intersecting point of TR3//TR4 and TRS//TR6 will become "O"V. When iC2 starts to decrease rapidly, the resultant flux variation will cause a positive pulse to be generated at Q1, which, in turn, will cause TR3//TR4 to tum on and TR5//TR6 to be cut-off. Likewise, when the collector (emitter) current iC2 flows in the order of Q4 to Q6 to mid-point, it will cause a positive feedback loop of Q6 to 25 to 23 to QI to be formed, so th.at a process similar to that just described will take place.
12
TRS,6 ON (TR2 OFF) Period
300V
OFF
TR3//TR4
>-I---~
T1
T2
i
1
Kt..13
)4
)~----'W.
J3
15
TR5//TR6
R2
..'...cs
i6
i.C2
"'
@
~~----,- - -
T2 input voltage. 150Vp-p square,wave
@
Point Voltage
ov
CD
Tri,gger input to TR3's base.
Due to il3, flux density of T1 will saturate and loop will be disconnected. As each coil will try to continue to conduct current
even after flux saturates. a counter electromotive
~/
@
force will work, and iC2 will continue to increase for a while.
. I
'"'1 · - - - - . - - - -
Because of the rapid drop in iC2, a positive trigger pulse that causes TR2 to turn on will be generated at 11.
·1)
Due to the increase in iC2, an .t6, 15, !3, £2 positive feed back loop is formed to let iC2 increase further.
Fig. 13 TRS, 6 turn-on period
In this way, TR3//TR4 and TRS//TR6 will be alternately turned on again and again, causing square waves to be generated. Fig. 13 gives the waveforms appearing at the respective sections during the serial process.
When a potential is produced at RS (0.22 ohms) due to overload (load shortening, etc.), TR7 goes ON and the base and emitter of· TR5//TR6 are shortened, causing the oscillation to stop for overload protection.
13
Oscillator start:ng trigger
Cal TR5,6 Collector Current
iC2
Due to the rapid drop
'
\
in iC2, a positive pulse generates at 11.
I
6
\
)_
'
(bl TR3,4 Collector Current
I 4-
'
iCI
TR3,4 ON
TR5,6 ON
TR3,4 ON
Ccl A-point Potential
V A 0
f= 20KH~
Saturation
:-·-
Cut off period
---'-I
0.75
Cd) TR5,6 Base-Emitter Volta\'le
I
0
~---------i~---..,-----·--f"-.......---------\,---~-
VBE1
; . - - - Cut off period---:
VBE2
Fig. 14 Summary of waveforms appearing at each section
14
As shown in (d) and (e), the waveform of the baseemitter voltage of TR311//TR4 and TR5//TR6 will become "O" V upon saturation of Tl's flux. In the meantime, the base current will flow in the direction similar to that before saturation, because of the counter electromotive force. Meanwhile, by having a negative feedback applied at the high frequency range, the capacitor provided between the collector and bases of TR3//TR4 and TR5//TR6 will function so as to hold down the wave height to an adequate level to prevent the peak values from rising above the maximum ratings of the respective transistors. The oscillating frequency of this circuit is determined by such factors as the maximum flux density of T 1 and the current flowing through £3. It is ordinarily designed to be approximately 20 kHz.
4. TRANSFORMER CIRCUIT
Although it is based on the same principle as that applied to genera[ power . transformers, the core material has been changed into ferrite material from the conventional electrical steel plate material to match the input waveform (square wave of approx. 20 kHz). Owing to the high permeability and use of high frequencies, power loss is far less than with conventional transformers. Therefore, it permits miniaturization of circuitry, which is the advantage of using a pulse power supply. At the same time, the transformer circuit functions to insulate the secondary-side chassis potential from the AC input potential applied to the prime side.
S. RECTIFIER CIRCUIT
Although this is a full-wave rectifier circuit intended for use with both plus and minus power supplied, it employs first recovery diodes having a quick reverse recovery time (trr) to enable high-efficiency rectification of square waves. Ordinary rectifying diodes cannot be used in this circuit.
6. SMOOTHING CIRCUIT
Because of the high frequencies, it enables direct current having a low ripple factor to be obtained with a small-capacity electrolytic capacitor. Since it has to handle square waves and impulsive triggers, and because of large number of harmonics, the pulse power supply is formed into an LPF (smoothing circuit employing a choke coil. At the same time, to avoid interference caused by radiation and induction of electromagnetic waves, the pulse power circuit, excluding the high-voltage rectifier circuit, is enclosed in a shield case to ensure sufficient shield-off. Packing used for the shield case is made of conductive material if it has been damaged during servicing or for other reasons, it must be replaced with new packing. Otherwise, undisirable radiation from the damaged part may cause noise to generate in other circuits.
15
VII. LEVEL DIAGRAM
AUX TAPE! (PINl
TAPElcr--+~~~~--~----.
(DIN) TAPE2 (PIN)
SPEAKER EQ AMP
PHON02r~--+-----+--~:
I
I
:
'--1---~t--~-~---t-~---l---e--oTAPEREC (PIN)
I
I
)i!
~
HEADPHONES TAPE REC !DIN)
30
I I
I I
I I
I I
I I
23,3V/80HMS (29.6d8l SPEAKER OUTPUT
101----+--~--+--~----t--~-i---~~l--t-~---t---1
o~---+-~---l-_Ll
10
l.OV!2.2dBI HEADPHONES _ ___,_ _ __L.__---,~_ _ _ _ _o_.8_V._~8~0=H=M=iSouTPUT (0.6d81 I (CONTROL AMPl ISOmV (PINl TAPE REC
I.
.
~T~U~N=ER""'-A~UX~TA~P~E~l~2~(P_IN_.......D_IN_l~-+-~-~~~~~~--~~-<~-4-8_dB--1lTAPEREC
CD ~-20'------'----1----+---+---------------+---i
150mVH4d8l
z
l:J
~ - 3 0 ' - - - - - + - - - i - - - + - - + - - - - - - - - - - - - - - - 30mV
...J
(-28d8)
-50 3mV(-48d8l - - + - - - - - - - - - - - - - - - - - - - - -
-601----+'--1------------------~------;
-701-----+~-----------------------i
\
-80
PHONOI !MC) 80 i.M-79.7dBl
I
FREQUENCY: lkHz OdB: 0,775V
Fig. 15
16
VIII. ADJUSTMENTS
REAR SIDE BAR METER SENS. ADJ RIGHT CHANNEL. L.EFT CHANNEL.
r-
H
'
I
!!~I n~ ... J
>N~
D
I I I
0
CENTER OFF· SET L.EFT RIGHT
CHAr-L.---------CH-~·L.
~
VIII
...
'lflllD
···
'------'
~
~
t:'.J=~
I
I
FRONT SIDE
Fig. 16 Main Amp P .C. Board
CENTER OFF -SET VOLTAGE ADJUSTMENT
AM-UOS
L GNO SP OUT
!
I
DC VOL.TMETER
Ro><--J
BAR METER SENSITIVITY ADJUSTMENT
AUDIO I OSCIL.L.ATOR o--.+----OGND· '-AUX IN
AM-U06
I.. :TL. RL. AC VOLTMETER
GNDO-------r---<;.1
I
R
R
__,
I
I
RL.:8of'lm1
Fig. 17 Instruments connection
1. CENTER OFF-SET VOLTAGE
ADJUSTMENT (Refer to Figs. 16, 17)
Connect the Digital Voltmeter or DC Voltmeter to the SPEAKER terminals. Adjust the VRl (L-ch), VRlb (R-ch) on the Main Amp P.C. board, so that the Voltmeter reads O ± 10 mV.
2. BAR METER SENSITIVITY ADJUSTMENT (Refer to Figs. 16, 17)
Set the METER Switch to "x 1 I." position. Connect load resistors (RL=8 ohms) to the SPEAKER terminals, and input a sine wave signal of 1 kHz to the AUX terminal. Control the input signal level until the AC Voltmeter connected to the both ends of the load resistor reads 10.95V. Under this condition, adjust the VR2 (L-ch), VR2b (R-ch) 2kB, so that the BAR METER indicates lSW. 17
IX. CLASSIFICATION OF VARIOUS P.C BOARDS
1. P.C BOARD TITLES AND IDENTIFICATION Nl)MBERS
P.C. Board Title Main Amp P .C Board
Push Switch P.C Board
P.C Board Number AMU-6001A AMU-6001B AMU-6001C AMU-6002 AMU-6003 AMU-6004A AMU-6005 AMU-6006 AMU-6023 AMU-4002 AMU-4003 AMU-4005 AMU-4008 AMU-2006 Chart-I
Led P.C Board (B} MC Amp P .C Board LED P.C Board (A) Pulse Power Supply P .C Board Rectifier P.C Board (A) (U/T) Rectifier P .C Board (C) (CEE, SAA, UK) Rectifier P.C Board (B) (CSA, AAL) Selector P .C Board Tone Control P .C Board Pin Jack P .C Board Slide Volume P .C Board Bar Meter P .C Board
18
2. COMPOSITION OF VARIOUS P.C BOARDS
1) MAIN AMP P.C BOARD AMU-6001A and LED P.C BOARD (B) AMU-6001C
@ [~
AMU-6004
~~
, .. , 'I" ...... ,
-.·1,~,
LED P. C BOARD (8) AMU- 6001C
0
E C B
=
2SA608K 2SA970 2sc 536K
®
·
258631
~
E (..ti
WttT
;!I'©
(';'\
,-----.....--- 0 I."' 0
'IYtE...
WHT
WliT /lONG
J
AMU- 4003
!!.Q"W°J,iK--01
@J
250600
0
l\MU- 4002
WtHILOl'l~
TR 2, 3, 13, 19
2S·6081(- t.IP
en
!Gl
':'i ' 14' 15
2SC5361< - NP P'"! IGI
04. 5
015
·o
9, 16
1ev1
LEFT
RIGHT
A.MU-2006
[I -----+-0":
6~6:
7 -------1--071
~--'
~;:
2 --L.o2I 3 ---f-o3 1
4 5 --L.o!!I
AMU-60018[0~
©~
LEFT
RIGHT
0~
_ .... ,..., ;t,1...,.caru
avr1mn~>··~[TV
=-~:t::~
MAIN AMP P.C BOARD AMU-6001A
~~l:.~i~~~=a1:tj-:01.~\.:r-~\'f\;c~~
di.·· >KD·QU Ln oo.....,tAHT9 C>llTIOIJl:I
.'i-i:nc....
r"'T·C·L CO!ol...,"l:NT' ,o.. CCfff'""'-0 ..,irn,
DE
~UTJ QlfU ....... "~AC"fUIO(ft''
Wttnl ,,_
19
2) PUSH SWITCH P.C BOARD AMU-6001B
..,
AMU-4002
,--------,
AMU- 4003
®@©@@@®CV® ®0® ®®0
E
,-------,
AMU- 4008
,--,
AMU - 4003
... ... ..,
--'
g
AMU- 6001A
~
" ' :>
c
B
2SC536K
,.
K 0
.
K
0
®®®@@@
~I
m
§
I
9
w z
~li.-+----N
,.1
'
w1
~·
AMU-600tA
@ [@
@
:1..,...__...,., :1,,....__. . . ,
I
I
0
--,
·'I
[: .:....1
S I
'I
-c::r
x
0.1
"'C:J"'"
MONO
STEREO
-=o·
D ..
IMETERI
IT
DOFF
AUDIO MUTE
-=
D
HtGH
ON OFF
=
D
SUBSONIC
-=IT
8
ON
-=
TI
A
OFF
IMODE I
IFILTERj
@PfAKiRS]
3) MC AMP P.C BOARD AMU-6002
AMU-4005
DI
TR 1,4
MVIZ
2$A970!0RI 18l.I
T,_ 1,3
25C2240 IGRI IBLI
J2
EC B
Jn
OFF_,
IPHONO SELECTOR
I
-z-
2SA970 2SC2240
S
I LOUDNESS I
20
4) LED P.C BOARD (A) AMU-6003
AMU- 4002
I~
2
2~1
5) SELECTOR P.C BOARD AMU-4002
AMU-6002
[R~~~_-JJ2
·,
'
'
' '
,.
'
¢
~m':~ ~'3~
AMU-4005
1..- ____ J
I INPUT
~
SELECTOR
I
~
~
.:
J2
J-1---1-l-l---l---I---I--l---1---I---LJ ---J
..__ ------ --- --- - - -- --- - -
REC SELECTOR
EJ
sw2-1 loSW.Z-3
I INPUT
SEL£CTORI
fC.1,IClb
1ro1
E C B 258560
rn
21·10.zv
3f ·1°2v
'41·1-25,311
!!:!l·1-Z6.4v
ef 01 71·10.IV 81 · 1-2uv
!ill·J .27,0'1
21
6) TONE CONTROL P.C BOARD AMU4003
AMU60018
AMU4008
[~ [~
14 13 :
WHT WHT /LONG PNK PNK BLK BLK WHT PNK
PNK/LONG PNK/CROSS
~.t-1©
------0)
WHT/CROSS
WHT/CROSS
WHT /LONG
-C-·© ---·©
---·.
------ -<@>
AMU60018
[ffi
~
BLK BLK
---·@ ------@ ---..@
VR4D 250K MN
r1r- l
(vA4 250K MN
rvr-i
!BALANCE!
I MID RANGE I
7) PIN JACK P.C BOARD AMU-4005
22
8) SLIDE VOLUME P.C BOARD AMU-4008
"'
..J
ID
.....
en
:?:
a: ~
a:
u
"' "'
0
"' "'
..J
"' 0
;::3:
:?:
..J
"' "' z
..J
0
a:
...,
0 ...,
.....
ii:
'.....
ii:
:?:
:?:
.....
~
..J
"' 0 "' er
z "'
..J
"'
3
ii:
3:
ii: ,.. ,.. ii:
I
,..
..J
I
·· · ©0®
I I
VR I
I VOLUME I
2~0KB
x2
9) BAR METER P.C BOARD AMU-2006
!BAR METER!
23
10) PULSE POWER SUPPLY P.C BOARD AMU-6004A (2ED)
AMU-6001A 2
"' \U!T\\CEEJ~\SAA\
0
E CB
0 0
2SA608K 2SC536K
I
©
I 9,_____,,_WH~T~_,
~--
_____P!.":
~~7_ _j
m
8
2SC2235 258632K
0 0
0 0
©
,-------..,
I
:'I:. TI
i
WARNING: &tNDtCATES SAFETY CRITICAL COMPONENTS. FOR CONTINUED SAFETY, REPLACE SAFETY CRITICAL COMPONENTS ONLY WITH MANUFACTURER'S RECOMMENDED PARTS AVERTISSEMENT: &.ll tNOIOU LES COMPOSANTS CRITIQUES OE slJRETf. POUR MAINTENtR LE DEGRE DE SECURITE OE L' APPAREJL NE REMPLACER LES CONPOSANTS OONT LE FONCTIONNEMENT EST CRITIQUE POUR LA SECURITE QlJE PAR DES PIECES RECOMMANDEES PAR LE FABRlCANt
T4-8-2
24
11) RECTIFIRE P.C BOARD (A) (U/T) AMU-6005
HOV
<8 ! AMU - 600IA
o
22ov
WHT
~--+-~:~,,~~VO--~
~-0-=-@
0
Ac
nov to 240V 50 I 60H1
~
·-·~-
-, ·.,·, ··o I
~ .. ~_841
0
12) RECTIFIER P.C BOARD {C) {CEE, UK, SAA) AMU-6006
ORG
§]
AMU - 6001 A
'--<)~~~@
U :MOV
IUK,SAAI T901
&.f!~s~~M: -,.~~0~;~ -~o
0
@:m
AC 220V SOMI
jVK,SAAj
AC 240V SOH1
0
AMU-6Q04A [ 7
-~=--+-~!:
L_J
!
RED
r--,
J6
®-
021
0
WARNING· 4>1WDICATU 'AFETY CRITICAL COMPQ'1f/HS FDR CONT!t!UED 'AFl':TY, Ri!:P\..AC[ SU'HY Cf'HTICAL COMPONENTS ONLY WJTk MAHUFACTUft[R'f;
RECOMMENOl!:O F\llRTS · .
AV[ATISSEMENT: &ll. !NOIOU LES COMPOSANTS CftlTIOUf! DI!: 91JAl!:TE. l"Oun MIAINTENIR lE DEORE: DE SECUR1TE DE L' APPARE!L NE REMPL ..l;El'I LU CONPOSANPl DOJiT LI!: fONtTl'.ltlNEMENT UT CAITIOU£ POUR LA SE:CURtTI!: OU[ PAR DES PIECES RECOMM4.NOEES PAR L[ FABRIC.ti.HT
25
13) RECTIFIER P.C BOARD (B) (CSA, AAL) AMU-6023
~ T90t
AM-UoeT-20
o··
@]
AMU·6001A
IC..-&..!lO,.RG"--@
0
"' r--, ~0~11 ~[ I I
~
,.
r-,
I
..
:/i
~
®.
I
BLU
I 021 L . ..J
I
L.J
I I I I I ol@
·10·
0
.01
·:,j\~· 4J4841
0
AC J20V
&OH·
WARNING: &.INOJC.ATES SAFETY CRITICAL COA4PONENTS. FOR CONTINUED SAFE::TY, REPLACE SAFETY CRITICAL COMPONENTS ONLY WITH MANUFACTURER'S RECOMMF.NDEO PARTS AVERTISSEMENT! &. IL lNOIOU lf.S COMPOSANTS CRITIQUES OE StiRETE. POUR MAINTENIR LE DEGRE DE SECURITE DE L' APPARF.IL NE REMPLACER LES CONPOSANTS OONT LE FONCTtONNF:MENT EST CRITlllUE POUR lA SECURITE QUE PAR DES PlECF.S RE<:OMMO.NOEES PAR LE FAF.IRICANT
26
SECTION 2
PART,s. LIST
-;,
__
'
'
~- ~- -
-
-
,. ·.··TABLE _OF.CONTENTS , _.
--.-:__--~·--_-_;_~.::]_\;
__
:_~--~:·,:---
·:3_. -~~-~ f~Jl,OARD{~f~2)·B~~~;::/ .._ ....
1. ". RECO~E~ED SPARE. PARJS·. LIST ).·!,;; ::·; . · ...·... ):·'<·~_:32 -2. 1MAIN AMP P.C BOARD (AMU·60
- ,--, -. -..· ,_. __ .·:·. .
,_
_')-{-f_~.'._;;;-.-;;J~:-:_~~~-~,-~~
.. -
--
_-:--··-
-
-__
- --
__,-_~;1_;-:=. --
:
·--~
·.y:
'.s':
6::·. ·sEiE:cro& P.'c BoAiID-cAMii.4002) iitocK ...... ··. . .. <: 36
4'. . . PULSEPOW~R SUPPLY P.CBOARD(AM1J-6004A) BLOCK .--).''.35 .:RECTIFIER 'J?.c80Afm'(~;6<)(js16Qo.616023)BLOCK_: .,· ... · 36
:-. ; .:·,_.~;>35 .
7.--·TONE comioL P.C BOARD(AMU-40o3)BLoCK ..·...· :. '.>.' -37
8. , PUSH SW."P.CBOARD (A.Mli~6001B) BLOCK . · . ....c · · · · : ; 37 9. !'ASSEMBLY BLOCK .......'.<.': .. 'f'; .. ........· ; ..·..· 38 10. FINAL ASSEMBLY BLOCK . . . . . . . . . . . . . . . . . . . . . . . . . . 40
INDEX .. -. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ;·... , . . 41
Resistor and Capacitor which is not .listed in this parts list, please refer to COMMON LIST FOR SERVICE PARTS.
29
HOW TO USE THIS PARTS LIST
I. This parts list is compiled by various individual blocks based on assembly process. 2. When ordering parts, please describe parts number, serial number, and model number in detail. 3. How to read List The reference number corresponds with illustration or photo number of that particular parts list. This number corresponds with the Figure Number. I This number corresponds with the individual parts index number in that figure. J::: A small "x" indicates the inability to show that particular part X in the Photo or Illustration. Schematic Diagram Number of individual manufactured part. . (not required for parts order) +-Quantity of particular part required.
l.
r-
} 2- 115
_L
I
1
!
l
Ref. No.
Parts No.
Description
SchN~~1;, Q'ty
FLYWHEEL BLOCK #13
l2·115x 12-116 l 2·1l7x J 2· l J 8 l 2·119 800425 244506 244754 251324 253080 Flywheel BlockAssy. Comp. Flywheel Only Felt, Flywheel Main Metal Case Main Metal
RDG ::13 RD·233 Rll·275 RD·236 RD·237
1
_---·-
_-
--
··:-,-
.-
4. The symbol numbers shown on the P.C. Board list can be matched with the Composite Views of Components of the Schematic Diagram or Service Manual. 5. Please utilize separate "Common List for Service Parts" for Resistor Parts orders. 6. The shape of the parts and parts name, etc. can be co.nfirmed by comparing them with the parts shown on the Electrical Parts Table of P.C. Board. 7. Both the kind of part and installation position can be determined by the Parts Number. To determine where a parts number is listed, utilize Parts Index at end of Parts List. It is necessary first of all to find the Parts Number. This can be accomplished by using the . Reference Number listed at right of parts number in the Parts Index. (meaning of ref. no. outlined in Item 3 above). 8. Utilize separate "Price List for Parts" to determine unit price. The most simple method of finding parts Price is to utilize the reference number.
CAUTION:
I. When placing an order for parts, be sure to list the parts no. model no., and description. There are instances in which if any of this information is omitted, parts cannot be shipped or the wrong parts will be delivered. 2. Please be careful not to make a mistake in the parts no. If the parts no. is in error, a part different from the one ordered may be delivered. 3. Because parts number and parts unit supply in the Preliminary Service Manual (Basic Parts List) may be partially changed, please use this parts list for all future reference .
. WARNING:
c: .·· .
.&.
INDICATES SAFETY CRITICAL COMPONENTS. FOR CONTINUED SAFETY, REPLACE SAFETY CRITICAL COMPONENTS ONLY WITH MANUFACTURER'S RECOMMENDED PARTS. DEGRE DE SECURITE DE L'APPAREIL NE REMPLACER LES COMPOSANTS DONT LE FONCTIONNEMENT EST CRITIQUE POUR LA SECURITE QUE PAR DES PIECES RECOMMANDEES PAR LE FABRICANT.
:· AVERTISSEMENT: &, IL INDIQU LES COMPOSANTS CRITIQUES DE SURETE. POUR MAINTENIR LE
.-
- -~-
: . ~-
-
30
AC INLET SYSTEM
This model is equipped with an AC INLET SYSTEM. Please refer to the AC INLET SYSTEM CHART below for the specific type. By the AC INLET SYSTEM, AC (mains) cord can be connected to and disconnected from the model because the model is provided with socket exclusively for AC (mains) cord on its main body. Please note, however, that certain models are not equipped with this system and has a built-in AC (mains) cord as before.
AC INLET SYSTEM CHART
CLASS I
IQ!
CLASS II
This mark indicating double insulation will be attached to machine's rear panel
Picture 1 AC INLET to be installed on machines
Most of European countries
Connects to machine's AC Inlet Connects to machine's AC Inlet Denmark Picture 2
Most of the European countries
~
.
AC (mains) cord
~U.K .
~ffy
.
.
Australia differs according to wall socket
Australia differs according to wall socket
Parts List for AC (mains) Cord Set Standard CEE BEAB SAA U/T CEE BEAB SAA U/T Cord Cord Cord Cord Cord Cord Cord Cord Description Set Set Set Set Set Set Set Set CEE (3 BEAB (3 SAA (3 U/T (3 CEE (2 BEAB·(2 SAA (2 U/T (2 cores) cores) cores) cores) cores) cores) cores) cores) Type of AC Inlet 3P 3P 3P 3P 2P 2P 2P 2P Parts No. EW302993 EW302994 EW302996 EW302646 EW638144 EW302995 EW302991 EW302899 31
Class I
Class II
1. RECOMMENDED SPARE PARTS LIST
Because, if the parts listed below are on hand, almost any repair can be accomplished, we suggest that you stock these
Recommended Spare Parts Items.
Parts No. BA320373 BA320374 BA320352 BT326589 BT326590 BT326591 BT326592 BT326607 EC326583 ED562386 ED322772 ED322773 ED323S 13 ED323S12 ED32S27S ED3230S6 £0214457 £0624903 EOS60913 ED32660S ED3230S7 ED323573 ED242368 ED3230S9 ED323S34 ED323S3S EF4S9843 EF3069S l EF326613 EF623125 EF249851 El326597 £1326595 El323564 El323054 El322599 El325947 EJ240S35 EJ2968S3 EJ323145 Description Main Amp P.C Board Comp. AM·U06 (CEE) Main Amp P.C Board Comp. AJYl·U06 (CSA) Main Amp P.C Board Comp. AM-U06 (U/T) .&. Power Trans. AM-U06T-20 .&. Power Trans. AM·U06T-40 .&. Power Trans. AM-U06T-50 .&. Power Trans. AM·U06T·70 Pulse Trans. PT·W06T .&. Metallized Mylar/C. (Vert.) 0.047µF (K) 400WV Germanium Diode 1Sl88A\t LED SLP-155D-01 LED SLP-2SSD-01 Silicon Diode CTU·24R Silicon Diode CTU·24S Silicon Diode SS29SD Silicon Diode 1S2091 Silicon Diode 1S2472 Silicon Diode IS2473 Silicon Diode IS2473 VE Silicon Stack 4J4B41 Silicon V arister MV 12 Trigger Diode 1S2093 Zener Diode WZ·240 Zener Diode WZ-270 Zener Diode OSZ-20U Zener Diode OSZ-8.2L .&. Fuse ST-6 SA .&. Fuse 2.SA 2SOV .&. Fuse SA 2SOV .&. Fuse (Semko T) 2.5AT .&.Fuse (Semko T) SAT IC STK·0070(2).SL IC STK·3062 IC TA7317P IC TA7322P IC TA75458S Osc. Trans. P.C Board Assy A\1-U06 .&. 3·Throw AC Outlet U/T, CSA, AAL CEE, UK, SAA CSA,AAL U/T U/T CEE, UK, SAA CEE, UK, SAA CSA,AAL CSA,AAL CEE UK,SAA U/T Notes CEE,UK,SAA CSA,AAL
.
.
.&. 3P Inlet CM -3
DIN SP, Pin Jack 4P
32
Parts No. EJ301199 EJ326596 EJ323143 EJ323144 EJ322582 EL326611 E0326617 EP313565 ES324162 ES679566 ES310839 ES326587 ES326586 ES323062 ES323063 ES306725 ES326593 ET311792 ET323529 ET322244 ET311791 ET305463 ET219868 ET322598 ET307195 ET323572 ET316171 ET316643 ET323105 EV478686 EV464196 EV324346 EV323061 EV323053 EV323051 EV323052 EW306428 EW305691 Pin Jack 2P Pin Jack 4P Pin Jack 6P Push Terminal 4P
Description Headphone Jack 3P64M
Notes
Lamp (Cord) 8V SOmA (550mmx2) Phase Compensation Coil 2.2µH (K) Relay MS4U 48V DC
& Push SW. SDG-lP TV-5 & Push SW. SDGlP TV-5
.~Push
U/T CSA,AAL CEE,UK,SAA
SW. SDGlP-E SA/BOA 250V
Rotary Slide SW. SRZR044S Rotary Slide SW. SRZW45S Rotary SW. SRJ3035 Rotary SW. SRJ3036 Slide SW. J-S4017 7-Throw Push SW. J-K2113 FET 2SKI50 (GR) {Y) (BL) Transistor 2SA608K-NP (E) (F) Transistor 2SA608K-NP (F) (G) Transistor 2SA968 (0) (Y) Transistor 2SA970 (GR) (BL) Transistor 2SB560 (E) (F) Transistor 2SB632K (E) (F) Transistor 2SC2240 (GR) (BL) Transistor 2SC2335 (K) Transistor 2SC536K-NP (E) (F) Transistor 2SC536K-NP (F) (G) Transistor 2SD600 (E) (F) Semi-Fixed/Vol. V8K4·1 lkB Semi-Fixed/Vol. V8K4-l 2kB Single-Axial 2-Throw/Vol. V16L4G3N 250kZx2 2-Throw Slide/Vol. WSDA l 19F02 250k (Special)x2 2-Throw/Vol. GM70ED78A 50kWx2 2-Throw/Vol. GM70E838A·SOkCx2 2-Throw/Vol. GM70E839A-50kCx2
I
.
I
& AC Cord (U/T)
&,. AC Cord CUL
I
CSA,AAL
I
I
33
2. MAIN MAP P .C BOARD (.Ai\1.U-6001A)
BLOCK
Symbol No. 2-1 2-2 Parts No. BA3203S2 BA320374 Description
Schematic l\o.
Symbol !'lo. 2-R90 2-R91 2-R92 2-R94 2-C3 2-C3 Ito34 2-4 2-5
Parts No. ER323996 ER3243S9 ER322S90 ER32Sl 14 EC657044 EC204671 ZS325495 ZS447840
Description Metal Oxide Film/R. F lW 100 ohms(J) Metal Oxide Film/R. F IW 56 ohms(J) Cement/R. (Metal Plate) SW (0.47+0.47) ohms(K) Carbon/R. F 1 /4WS 33 ohms(J) NP/C. (Vert.) tµF(M)
Schematic
No.
2-3
BA320373
2·1C2 2-IC4 2-ICS 2-TRl 2-TR2,3 2·TR4,5 2-TR6,7 2-TR8 2-TR9 2·TR10 2-TRl 1 2-TR12 2-TRl 3 2·TR14,1 S 2-TR16 2-TRI 7 2-TR18 2-04,S 2-D6to9 2-DlOtolS ·2-D16 2-Dl7tol9 2-020 2-D21 2-D22,23 2-024 2·D25 2-D26 2-027 2-VRl 2-VR2 2-RLl ,2 2-Ll 2·R2 2·R31 2-R71,72 2-R74,7S 2-R76,77 '2-R78 2-RS0,81 2-R82,83 2-R89
El32659S EI322S99 EI323564 ET307195 ET322244 ET316643 ET307195 ET305463 ET323105 ET30719S ET305463 ET311791 ET322244 ET316643 ET311792 ET32310S ET322244 ED3230S6 ED323057 ED214457 ED3230S7 ED624903 ED214457 ED624903 ED242368 £0562386 ED323S3S ED323S34 ED624903 EV478686 EV464196 EP313565 E0326617 ER32661 S ER313774 ER323074 ER322591 ER32307S ER30887S ER326616 ER328138 ER30887S
Main Amp P.C Board A\lt.:-6038 Comp. AM-U06 (U /T) Main Amp P .C Board Comp. AM-U06 (CSA) A!'lt:-6038 (CSA, AAL) Main Amp P.C Board Comp. AM-U06 (CEE) AMU-6038 (CEE, UK, SAA) IC STK-3062 45-8-481 IC TA7S458S 45+415 45-8-424 IC TA7317P Transistor 45-1-302 2SC2240 (GR)(BL) Transistor 45-1-375 2SA608K-NP(F)(G) Transistor 45-1-362 2scs 36K-NP(F)(G) Transistor 45-1-302 2SC2240(GR)(BL) Transistor 45-1-303 2SA970(G R){BL) 45-1-383 Transistor 2SD600(E)(F) Transistor 45-1-302 2SC2 240(G R)(BL) Transistor 45-1-303 2SA970(GR)(BL) 45-1-338 Transistor 2SA968(0)(Y) Transistor 45-1-375 2SA608K-NP(F){G) Transistor 45-1-362 2SCS36K-NP(F)(G) FET 2SK1 SO{GR)(Y)(BL) 45-12-22 45-1-383 Transistor 2SD600{E}(F) Transistor 45-1-375 2SA608-NP(F)(G) 45-3-66 Silicon Diode 1 S2091 45-10-16 Silicon Varister MV 12 45-3-H Silicon Diode 1S2472 Silicon Varister MV 1 2 45 10-16 Silicon Diode 1S2473 45-3-28 45-3-41 Silicon Diode 152472 45-3-28 Silicon Diode 1S2473 Zener Diode WZ-240 45-6-37 Germanium Diode 45-3-24 1Sl88AM Zener Diode OSZ·8.2L 45-6-76 45-6-76 Zener Diode OSZ-20U 45-3-28 Silicon Diode 1S2473 Semi-Fixed/Vol. 36-10-266 V8K4-l lkB Semi-Fixed/Vol. 36-10-266 V8K4-1 2kB 47-1-39 Relay MS4U 48V DC Phase Compensation Coil 2.2µH(K) 23-1-424 Carbon/R. F l/4WS 35-11-30 39 ohms(J) Metal Oxide Film/R. 35-19-1 F lW 4.7k (J) 35-11-30 Carbon/R. F 1/4WS lk(I) Carbon/R. F 1 /4WS 35-11-30 100 ohms(J) Carbon/R. F 1/4WS 35-11-30 4.7k (J) Carbon/R. F l /'2W 35-11-27 10 ohms(J) Metal Oxide Film/R. 35-19-4 F lW 680 ohms(J) Metal Oxide Film/R. F lW 220 ohms(J) 35-19-5 Carbon/R. F 1 /2W 10 ohms(J) 35-11-27
35-19·4 35-19-4 35-16-84 35-11-30 24-17·26 24-5-66
sowv
Ceramic/C. OD31-4E O.OlµF(P) SOOWV Tapping Screw, #2 BR 3x6 Tapping Screw, #2 BR 3x8
- - - - - - - - - - - W h e n ordering parts, please quote Parts Number, Description and Model N u m b e r . - - - - - - - - - - - -
3. MC A\1P P.C BOARD (AMU-6002) BLOCK
Symbol No. 3-TRl 3-TR2,3 3-TR4 3-Dl 3-SWl 3-SW2 3-CB,9 3-Cl 4 3-ClS Parts No. ET305463 ET30719S ET305463 ED3230S7 ES-326586 ES326587 EC324922 EC324109 EC31499S Description Transistor 2SA970(GR)(BL) Transistor 2SC2240(GR)(BL) Transistor 2SA970(GR)(BL) Silicon Varister MV 12 Rotary Slide SW. SRZW45S Rotary Slide SW. SRZR044S NP/C. 4.7µF(M) SOWV Styrol/C. 1 SOPF(J) 50WV Styrol/C. 330PF(J) SOWV
Schematic
4. PULSE POWER SUPPLY P .C BOARD (AMU-6004A) BLOCK
Symbol No. 4-TRl 4-TR2 4-TR3to6 4-TR7 4-01 4-D2 4-D3 4-04 4-DStoS 4-Tl 4-Tl 4-SWl 4-Ll 4-L2to5 4-L6 4-Rl 4-R5 4-R18 4-C2,3 4-C4,S 4-C6 4-C8,9 Parts No. ET323S29 ET316171 ET323S72 ET322598 ED323573 EDS60913 ED323512 ED323513 ED32S27S El32S947 BT326607 ES30672S E0325281 E032S278 E0325280 ER325277 ER324222 ER32S288 EC326608 EC326609 EC32S316 EC323517 Description
Schematic
~o.
l\o.
frl-303 45-1-302 45-1-303 45-10-16 25·6-197 25-6-198 24-17-35 24-11-17 24-11-17
4-C21
EC325286
4-C21
EC325266
4-1 4-2 4-3 4-4 4-S 4-6
ZG323474 ZS419670 ZS380046 ZS379350 ZS558101 TA323481
Transistor 45-1-375 2SA608K-NP(E)(F) Transistor 45-1-362 2SCS36K-NP(E)(F) 45-1-381 Transistor 2SC2335(K) Transistor 2SB632K(E)(F) 45-1-374 45-3-65 Trigger Diode 1S2093 Silicon Diode 1S2473 VE 45-3-23 45-2-101 Silicon Diode CTU-24S Silicon Diode CTU-24R 45·2·102 45-2-105 Silicon Diode SS29SD OSC. Trans. P.C Board Al\1\.:-6034 Assy AM-U06 23-1-418 Pulse Trans. PT-W06T 25-3-157 Slide SW. J-S4017 Choke Coil TCA-20 23-1-41\ 23-1-412 Inductor TCD-35 23-1-413 Choke Coil 220µH Metal Oxide Film/R. 35-19-1 F lW 68k (J) Metal Plate/R. 2W 0.22 ohm(K) 35-16-38 Metal Oxide Film/R. 35-19·2 F 2W 6.8 ohms(J) Elect./C. (Vert.) 24-12-76 IOµF 4SOWV Metallized Mylar/C. (Vert.) 0.68µF(K) 400WV 24-16-28 Metallized Mylar/C. {Vert.) 0.33µF(K) 400WV 24-16-28 Ceramic/C. (Vert.) DP3100 B IOOPF(K) 24-5-101 IKWV Ceramic/C. (Vert.) HS D 0.0022µF(M) 400WV 24-5-104 (U/T, CEE, UK, SAA) Ceramic/C. DE7100 0.0047µF(P) 125VAC 24-5-87 (CSA, AAL) UCW-5023 Hold Spring Screw, Pan 3x 12 Screw, Pan 3x 1 O Screw, Pan 3x6 Screw, Pan 3X6 wfWasher UCW-5029 Packing (A)
- - - - - - - - - - W h e n ordering parts, please quote Parts Number, Description and Model N u m b e r . - - - - - - - - - -
5. RECTIFIER P.C BOARD (AMU-6005/6006/6023) BLOCK
Symobol No. 5-Dl 5-Ll Parts No. ED32660S ER32526S Description Silicon Stack 4J4B41 b> Power Filter UF-3729 C 182Y2RO (U/T, CSA, AAL) b> Power Filter EF-3727-203Yl R2 (CEE, UK, SAA) Metal Plate/R. MPC71Fl SW 0.47 ohm(K) & Oil Paper/C. 0.1µ.F(K) lkWV (U/T) & Metallized Mylar/C. {Vert.) 0.1µ.F{M) t 25V AC (CSA, AAL) ~ MP/C. PEM271 0.1µ.F(M) 2SOWV (CEE, UK, SAA) MP/C. (Vert.) 0.01µ.F(M) 2sowv (U/T) Ceramic/C. DE71SO FZ 0.0 lµ.F(P) 12 SWV (CSA, AAL) MP /C. (Vert.) 0.01µ. F(M) 2SOWV (CEE, UK, SAA) Ceramic/C. (Vert.) HS D 0.0022µ.F(M) 400WV (U/T, CEE, UK, SAA) Ceramic/C. DE7100 F 0.0022µ.F(M) l 2SV AC (CSA, AAL) Elect./C. 1000µ.F 200WV (U/T, CSA, AAL) Elect./C. 220µ.F 400WV (CEE, UK, SAA)
Schem·tic
No.
6. SELECTOR P.C BOARD (AMU-4002) BLOCK
Symbol No. 6-ICl 6-TRl 6-Dl,2 6-SWl 6-SW2 6-R3 6-R7 Parts No. El323054 ET219868 ED3230S9 ES323062 ES323063 ER323067 ER323351 ER323069 EC318358 EC324102 EC324103 EC323055 Description IC TA7322P Transistor 2SBS60(E)(F) Zener Diode WZ-270 Rotary SW. SRJ303S Rotary SW. SRJ3036 Metal Oxide Film/R. 1/4W 100 ohms(F) Metal Oxide Film/R. l/4W 3.74k {F) Metal Oxide Film/R. l/4W 46.4 ohms(F) NP/C. 47µ.F(M) 6.3WV Polypropylene/C. (Vert.) 0.02µ.F(G) SOWV Polypropylene/C. (Vert.) 0.0697µ.F{G) SOWV NP/C. lOµF(M) 16WV
Schematic
No. 45-H19 45+232 45-£-67 25-6-191 25-6-192 3>-17-20 35-17-20 35-17-20 24-17-35 24-22-10 24-22-!0 24-17-35
45-2-106
23-H15
s-Ll
ER32S268
23-Hl4 35-16-48
s-Rlto4 5-Cl S·Cl
ER622978 EC323SS7 EC326827
6-RS
24-B-7
6-C3 6-C9
24-16-30
S·Cl
EC258298
6-ClO
24-9-118 24-9-134
6-Cl 1
S·C2 S-C2
EC32S671 EC314688
24-5-87
24-9-134
S-C2 5-C3
EC325671 EC325286
24-5-104
S-C3
EC326828
24-5-37 24-12-74 24-12-75
S-C4,S S-C4,S
EC326604 EC326606
- - - - - - - - - - - W h e n ordering parts, please quote Parts Number, Description and Model N u m b e r . - - - - - - - - - - -
36
7. TONE CONTROL P.C BOARD (AMU-4003) BLOCK
Symbol No. 7-ICl 7-IC2 7-VRl 7-VR2 7-VR3 7-VR4 7-Cl 7-CS,9 7-ClS Parts No. El3230S4 EI322S99 EV3230S1 EV323052 EV323053 EV324346 EC3230SS EC3230SS EC243393 Description IC TA7322P IC TA7S4S8S 2-Throw/Vol. GM70E838A-50kCx2 2-Throw/Vol. GM70E839A-50kCx2 2-Throw/Vol. GM70ED78A-50kWx2 Single-Axial 2-Throw/Vol. V16L4G3N 250kZx2 NP/C. lOµF(M) 16WV NP/C. lOµF(M) 16WV Solid Aluminum/C. (Vert.) 0.22µF(K) lOWV
Schl!muic No.
8. PUSH SW. P.C BOARD (AMU-6001B) BLOCK
Symbol No. 8-TR1to4 8-SW1to7 Parts No. ET316643 ES326593 Description Transistor 2scs 36K-NP(F)(G) 7-Throw Push SW. J-K2 ll 3
Schematic
No. 45-1-362 25-5-381
45-8-419 45·8·4:5 36·22-5;f 36·22·5S 36-22-ov 36-22-05 24-17-35 24-17·3S 24-19-2
-----------When
ordering parts, please quote Pans Number, Description and Model N u m b e r . - - - - - - - - - - -
37
9. ASSEMBLY BLOCK
38
IASSEMBL y
Ref. No. 9-lx 9-2x 9-3x 9-4x Parts No.
BLOCK
I
Description
Sch"!l?a.tie
~o.
Ref. No. 945
Parts No. ZW698308 EL326611 EJ301199 BT326592 BT326S89 BT326590 BT326591 ZS4SS207 ZS434250 ZW413188 ZS406416 ZS498273 ZS297641 EJ313601 ZSS23664 EF326613 EF306951 EF325683 EF459843 EF623125 EF249851 SP323044 ZS447840 SA-312465 ZS565942
Description Nylon Rivet (NRB) 3><5.5 (Black) Lamp (Cord) 8V SOmA (SSOmmx2) Headphone Jack 3P64M L!i. Power Trans. AM-U06T-70 (U/T) L!i. Power Trans. AM-U06T-20 (CSA, AAL) L!i. Power Trans. AM-U06T-40 (CEE) L!i. Power Trans. AM-U06T-SO (UK, SAA) Tapping Screw, #2 BR 3x5 Screw, Pan 4x8, wfWasher Nut, #1 M4 Tapping Screw, #2 Countersunk 3x8 Tapping Screw, #2 BR 3x8 W=8 Tapping Screw, #2 BIND 3x8 W=lO L!i. Mini Connector Assy CllOl Tapping Screw, #2 BR 3x 10 L!i. Fuse SA 2SOV {U/T) L!i. Fuse 2.SA 250V (U/T). .
Sch~matic
l\'o.
LED P.C BOARD (A) BLOCK ED322773 LED SLP-2SSD-Ol ED322772 LED SLP-lSSD-01 SE326570 LED Escutcheon ZS468101 Tapping Screw #2, Pan 2.6x6 LED P.C BOARD (B) BLOCK ED322772 LED SLP-lSSD-01 SLIDE VOL. P.C BOARD BLOCK EV323061 2-Throw Slide/Vol. WSDAl 19F02 2 SOk (Special)x2 ZS417216 Screw, Pan 3x4 PIN JACK P.C BOARD BLOCK EJ323143 Pin Jack 4P EJ323144 Pin Jack 6P EJ32314S Din SP, Pin Jack 4P EJ326S96 Pin Jack 2P HEAT SINK BLOCK IC STK-0070(2)-SL EI326S97 Tapping Screw, #2 BR 3x 18 ZS321279 PULSE POWER SUPPLY BLOCK ZS379350 Screw, Pan 3x6 TA325261 Packing ZS306459 B-Tight Screw, BR 3x8 REAR PANEL BLOCK Rear Panel (A) (U /T) SP326562 Rear Panel (B) (CSA) SP326563 SP326565 Rear Panel (C) (AAL) Rear Panel (D) (CEE) SP326566 Rear Panel (E) (UK,SAA) SP326567 EJ325358 Earth Terminal ZW6S2408 Washer (SPC) D3.2Xl0x0.St ZS308673 Tapping Screw, Pan 3X20 w/Guide EJ322S81 Pin Jack 4P (RED, WHT) ZS522865 Tapping Screw, #2 BR 3Xl2 (Black) EJSS4S78 Short Plug EJ322582 Push Terminal 4P EJ240S3S L!i. 3-Throw AC Outlet (U/T, CSA, AAL) EW306428 L!i. AC Cord (U /T) EW305691 .
45-E-3i 45-!5-]8 AM[..;,J14
2-7-54 28-2-84 31-2-03 38+839 38-4-836 38+837 38-4-838
9-46 9-47 9-48
9-S
45-1:-;s
949x 9-sox 9-Slx
9-6
36-:r.-;
9-7
9-8 9-9 9-10 9-11
31-5-::l 31-5-1'8
9-S2 9-S3x 9-S4x 9-SSx 9-S6x 9-S7x 9-58X 9-S9 9-60 9-61x 9-62x 9-63X 9-64x 9-65X
31-5-l:i 31-5-: ;.;
26-6-323 39-1-64 39-1-64 39-H7 39-1-63 39-1-53 39-1-53 A:.ll-4038 CA-6014
9-12 9-13
45-B-;~2
9-14x 9-1 s 9.-16
AM[-.;;)18
9-17 9-18x 9-19x 9-20x 9·21x 9-22 9-23 9-24 9-2S 9-26 9-27 9-28 9-29 9-30 9-3Ix 9-32 9-33x 9-34x
AMt:-;-008
A~11:-.;009 A~1t:..;009
AMli"°lO
A~1t:~10
9-66 9-67 9-68 9-69
32-HI5
7-1-60 32-1-:·:6
42-1 06
32-l-1J7
31+:~3
26-H-1 26-H: 2-7--19 31-l-i39
9-3Sx 9-36x 9-37 9-38x 9-39x 9-40 94lx 9-42x
7-H? 25-5-377
25-5-2~4
25-H:O
24-5-i-O
24-S-~7
9-43 9-44x
2t-?-i24 AML--'027
- - - - - - - - - - - W h e n ordering parts, please quote Parts Number, Description and Model ! ' l u m b e r . - - - - - - - - - - -
39
I 0. FINAL
ASSE..~BLY
BLOCK
30
--
rJ
14
17
IFINAL ASSEMBLy
Ref. No. 10-1 10-2x 10·3X 10-4 10-Sx 10·6X 10-7x 10-8 I0-9x 10-lOx 10-11 x 10-12 10-I 3x 10-14 10-lSX 10-16x 10-17 10-ISx 10·19x 10·20x 10-21 x Parts No.
BLOCK
I
Schematic
~o.
Description
Ref. No.
Parts No.
Description Washer (SPC) D3.lx8xlt Special Tapping Screw, Pan 3x8
Schematic
No.
FRONT PANEL BLOCK Front Panel Block AM-U06 BD325920 Front Panel Block AM-U06-BL BD32S92 l SE322578 Escutcheon (A) Button (A) SB322576 SB322577 Button (A·BL) ZG322579 Spring (A) SE322SS9 Escutcheon SB322SS7 Button SB322SS8 Button (BL) ZG322566 Spring SE325061 Escutcheon (A) SE322538 Bar Meter Escutcheon SE322539 Bar Meter Escutcheon (BL) SK3i4171 Slide Knob Part AM-U04 SK323147 Slide Knob (BL) Part AM-U04-BL ZW270088 'E' Ring t .9M SZ322544 Bar Meter Plate Bar Meter Filter SZ322545 Vol. Dlumination Plate TA323037 SP323038 Scale Back Plate SP323039 Scale Back Plate (BL)
AMC-6029 AMC-6029 ATK-2013 ATK-2012 ATK-2012 ATK-2014 AMl!-2045 AMt.:-2044 AMU-2044 A'\IU-2050 AT\'-4029 A'\IL'-2032 AMV-2032 AMl!-4061 AMU-4061
l 0-22x ZW616004 10-2 3x ZS322402
7-1-70
I0-24x I 0-25X 10-26x 10-27x 10·28X 10-29x 10-30 10-31 x 10-32x 10-33 10-34x
6-1-9
AMU-2036 AMU-2037.2058 AMU-4033 AMU-4034 AMU-4034
FLNAL ASSEMBLY BLOCK Tapping Screw, #2 BR 3x8 ZS447840 ZW3241S7 Washer (SPC) D6.2xl 3x0.2St ZW324158 Washer (SPC) D6.2x 13x0.St ZW3241S9 Washer (SPC) D6.2x 13X0.8t ZW265983 Washer (SPC) D6.2x 13x It Washer (SPC) D6.2xl3xt.6t ZW324161 Upper Plate (A) SP32304S Upper Plate (B) (AAL) SP323047 Upper Plate (A-BL) SP323046 S-Tight Screw, Bind 4x8 ZS322570 S-Tight Screw, Bind 4x8 ZS322S80 (Black) (AAL, BL) 10-35 Knob SK323042 Knob (BL) 10·36X SK323043 Knob (B) 10-37 SK322SS3 Knob (B-BL) 10-38x SK322554 Knob (C) SK32255S 10-39 Knob (C-BL) 10-40x SK322556
AMU-4039 AMU-4039 AMU-4039
AMU-4037 AMU-4037 AMU-2042 AMU-2042 AMU-2043 AMU-2G43
- - - - - - - - - - - W h e n ordering parts, please quote Parts Number, Description and Model N u m b e r . - - - - - - - - - - -
INDEX
Parts No. BA320352 BA320373 BA320374 B0325920 B0325921 BT326589 BT326590 BT32659 l BT3Z6592 BT326607 EC204671 EC243393 EC258298 EC314688 EC314688 EC314995 EC318358 EC321302 EC323055 EC323055 EC323055 EC323517 EC323SS7 EC324102 EC324103 EC324109 EC324922 EC325266 EC325286 EC325286 EC325316 EC325671 EC325671 EC326604 EC326606 EC326608 EC326609 EC326827 EC326828 EC327382 EC657044 £0214457 £0214457 £0242368 £0322772 £0322772 £0322773 ED323056 ED3230S7 ED323057 £0323057 ED323059 E0323512 E0323513 E0323534 ED323535 ED323573 ED325275 £0326605 E0560913 £0562386 ED624903 E0624903 E0624903 EF2498Sl EF306951 EF325683 EF326613 EF4S9843 EF62312S £1322599 £1322599 EI323054 El323054 £1323564 £1325947 El326595 El326S97 EJ240535 EJ296853 Ref. No. & Par.ts No. Symbol No. 2-1 2-3 2-2 10·1 10-2X 9-49X 9-sox 9-Slx 9-48 4-Tl 2-C31 to34 7-ClS 5-Cl 5·C2 9-41x 3-ClS 6-C3 9-40 6-Cl 1 7-Cl 7-C8,9 4-CS,9 5-Cl 6-C9 6-ClO 3-Cl4 3-CS,9 4-C21 4-C21 S-C3 4-C6 S-C2 5-C2 S-C4,S 5-C4,5 4-C2,3 4-C4,5 5-Cl S-C3 9-42x 2-C3 2-0lOtol S 2·020 2·022,23 9-2x 9-5 9-lx 2·04,5 2-06to9 2-016 3-01 6·01,2 4-03 4-04 2·026 2-025 4-Dl 4-0Sto8 S-01 4-02 2·024 2-Dl 7tol9 2-021 2-027 9-6Sx 9-61X 9·62X 9·60 9·53x 9-64x 2·1C4 7·IC2 6-ICt 7-lCl 2-lC5 4·Tl 2-IC2 9-12 9·29 9·33x EJ301199 EJ313601 EJ322581 EJ322582 EJ323143 EJ323144 EJ323145 EJ325358 EJ326596 EJSS4578 EL32661 l £0325278 £0325280 £0325281 £0326617 EP313565 ER30887S ER30887S ER313774 ER322590 ER322591 ER323067 ER323069 ER323074 ER32307S ER3233Sl ER323996 ER324222 ER324359 ER325114 ER32526S ER325268 ER325277 ER325288 ER326615 ER3266J6 ER328138 ER622978 ES30672S ES310839 ES323062 £5323063 ES324162 ES326586 £5326587 £5326593 ES679566 ET219868 ET30S463 ET305463 ET305463 ET305463 ET307195 ET30719S ET307195 ET30719S ET311791 ET31I792 ET316171 ET316643 ET316643 ET316643 ET322244 ET322244 ET322244 ET322598 ET323105 ET32310S ET323529 ET323S72 EV323051 EV323052 EV323053 EV323061 EV324346 EV464196 EV478686 EW305691 EW306428 EZ631945 Ref. No. & Symbol No. 9-47 9-58x 9-25 9-28 9-8 9-9 9-10 9-22 9-11 9-27 9-46 4-L2to5 4-L6 4-Ll 2-Ll 2-RLl,2 2-R78 2-R89 2-R31 2-R92 2-R 74,75 6-R3 6-RS 2-R71,72 2·R76,77 6-R7 2-R90 4-R5 2-R91 2-R94 5-Ll 5-Ll 4-Rl 4-Rl8 2-R2 2-R80,81 2-R82,83 S-Rlto4 4-5Wl 9-39x 6-5WJ 6-SW2 9-37 3-SWI 3-SW2 8-SW1to7 9-38x 6-TRl 2-TRB 2-TRl l 3-TRl 3-TR4 2-TRt 2-TR6,7 2-TRlO 3-TR2,3 2-TR12 2-TRl 6 4-TR2 2-TR4,5 2-TR14,15 8-TR1to4 2-TR2,3 2-TRl 3 2-TR18 4-TR7 2-TR9 2-TR17 4-TRt 4-TR3to6 7-VRl 7-VR2 7-VR3 9-6 7-VR4 2-VR2 2-VRl 9-3tx 9-30 9-32 Parts No. SA312465 SB322SS7 SB322558 SB322576 SB322577 SE3225 38 5£322539 5£322559 SE322578 SE325061 5£326570 5K32255 3 5K3225S4 SK3225SS SK322556 SK323042 5K323043 SK323147 SK324171 5P-323038 SP323039 SP323044 SP323045 SP323046 SP323047 SP326562 SP326563 SP326565 5P326566 SP326S67 SZ322544 SZ322545 TA323028 TA323037 TA323481 TA325261 ZG322566 ZG322579 ZG323474 ZS297641 Z5306459 ZS308673 ZS308846 ZS321279 ZS322402 ZS322570 ZS322S80 ZS3l5495 ZS32549S ZS3793SO ZS3793SO ZS380046 ZS406416 ZS417216 ZS419670 ZS422076 ZS434250 ZS447840 ZS447840 ZS447840 ZS4SS207 ZS463353 ZS468101 ZS498273 ZS522865 ZS523664 ZS558101 ZSS65942 ZW26S983 ZW270088 ZW324157 ZW324158 ZW324159 ZW324161 ZW413188 ZW616004 ZW652408 ZW698308 Ref. No.& Parts No. Symbol No. 9-68 10-8 10-9X 10-4 10-5X 10-12 10-1 Jx 10-7x 10-3x 10-1 lx 9-3x 10-37 10·38x 10-39 10·40x 10-35 10-36x 10-15X 10-14 10-20X 10-2 lX 9-66 10-30 10-32x 10-31X 9-17 9-18X 9-19x 9-20x 9-21x 10-17 10-18X 9-43 10-l 9X 4-6 9-15 10-lOx 10-6x 4-1 9-57x 9-16 9-24 9·36x 9-13 10-23x 10-33 10·34x 2-4 9-35x 4-4 9-14x 4-3 9·55x 9-7 4-2 9-44 9-53x 2·5 9-67
10·24X
Ref. No. & Parts No. Symbol No.
Ref. No.& Symbol No.
.
9-52 9-34x 9-4x 9·56x 9·26 9.59 4-S 9·69 10·28X 10·16x 10·2Sx l 0·26X 10-27X 10·29X 9·54X 10-22x 9-23 9-45
41
SECTION 3
SCHEMATIC DIAGRAM
1. 2. 3. 4. 5.
SCHEMATIC AM-U06 NO. AM-U06 NO. AM-U06 NO. AM-U06 NO.
DIAGRAM OF ICs 4-1 1601220A CONNECTION DIAGR.At\1 4-2 1601221A MAIN A...'1P SCHE'1ATIC DIAGRAM 4-3 1601222A PULSE POWER SCHEMATIC DIAGRA\l 4-4 1601223A MC AMP SCHEMATIC DIAGRA\l
42
LC7556
osc
-
-- ---,I
I
I I I
I
I
FLT
driver:
I
I I
~{
-ir:;too
OLI
to
to
OLB
I I
I
OR I
0L9
OR 9
OLS
~Voo
1--o
10
to
OLl2 ORl2
rlv"
I
'"' ':i: lo.
0 "'
-'
0
STK-007011
I
·I
I
I I I I
_J
TA7322P
- --,
I
I I
_J
+
43
TA7317P
,-----------1 I
--,
I
I I I
I
Power ON-OFF Detection Circuit
I I
Over Current
Detection Circuit
OR Circuit
Shumitt Circuit
Relay Drive Circuit
Z Direct Voltage Detection Circuit
Oiscnar9e
Circuit
Sub Straight
7
------~o------
5
r----1
I I I I
e---------- - - - - - - - ,I __ _,f
l
QI Q5
I
Q2
I
6)
03
RI
Q4
06
013
R4
Ql8
Ql9
RS
014
I I
I
I
I
Q20
I I
_ _J
L--
TA75458S
TO OTHER AMPLIFIER
TO OTHER AMPLIFIER
IK
50K
lk
~---~-------<~-------------------+----<-------o'" IEACM AMPt.IFIEAJ
44