Alpine 3002 User manual

SERVICE
ZI_LPINE
MANUAL
Main Amplifier |
With Pulse Regulated Power Supply
POWER
-——_¢ 215
3 S OD) @
@ H
L
(_———__
a MAIN AMPLIFIER
INPUT =i (ast i tstst=<‘<i‘;é*r WITH PULSE REGULATED POWER SUPPLY
Tm | MOdEL 3002 50W + 50W
O29) ®

Contents
SPCC ECAC IIIS hae 5 se app eictinrc Soy Sarthe enc Ben te en rome as at Steg Baek actus ade ooh ethene ok ag BB eae Bea 2
Block Diagram ............. sass teste eae aise ts ecg ees to stad sls Gg en ses eat 2
Parts Location and Disassembly Instruction. ........... 0... 0c eee eee eee ee eee ee eae 3 to 4
Adjustment Procedures.................20 000s Medak ances wees PRG ue Gus aie Geen Bak a ean oe 5
Adjustment Location...................0 0000 cies Wie einre r es ee che oh cae ee av Sit earn et ene end ate 5
Printed Circuit Boards ........... Se Be ee Bee ee Peeper ee ee ww Sit0 7
Wiring Diagram... 2... 2.0.0.0... 0.0.02. ee eee GUE Rew bes te et eonee are fe a cits dt teks oe Goris inch ta eek 8
schematic: Didgraln- e002 ae es eh oe ek A ER ee ao ae eek Be ace eke w bd ea oat OS® 9
Semi-Conductor Lead Identifications .... 0... 00. ee ee ee ee ee ee ene 9
Exploded: Views < 4.4 4.sacteure on Ge ee ee Ee I BAe BR 0 oS SS hae 10
ARCS
VASE
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sp.
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Goes)
Gee
de
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Beas
sa
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we,
Etc
aie
ote
ate
eS
ep
aes
es
11
to
13
Specifications
POWER SOURCE 6 ¢ 8-6 veh Okt Gea sees cee hash ek Som eG A ele set en sun disiew hlhl 6 eh 14V D.C. (11 to 16V)
Power
Output...
6
os
desk
bee
She
SA
ewe
aS
More
than
43W
(4
ohm,
30
Hz
to
20
kHz,
0.2%
THD)/ch
Distortion
EAD)
ecdch
ein
wal
Boe
we
dba
2
ed
ale
bo
ees
Less
than
0.2%
(4
ohm,
30
Hz
to
20
kHz,
43W
x
2)
IM
DDISTOMEIGN
40.0
3
4.
8
eot-ke
se
Gd
ei
ae
RS
ee
ee
ES
Wale
nd
0.2%
(4
ohm,
500mW
to
43W
IHF,
Din
Input)
Frequency Response
ier g Geie doe aa okt ie eee te a A ten eS ee al 20 Hz to 55 kHz (+1 dB, 4 ohm, 1 kHz)
BDCaw Ola aut Wise bap ina att oe eee ee bas acd cane ain 20 Hz to 35 kHz (+1 dB, 4 ohm, 1 kHz)
Frequency
Range
.........
0.0.00
c
ce
ee
eee
ee
ee
ee
eens
30
Hz
to
20
kHz
(0.2%,
4
ohm,
43W
IHF)
Input Sensitivity (High/Low Impedance)
EVV
erie
tag
Ve
ras
cscs
chee
obs
See
En
Bk
Se
via
350mV/800mV
+1.5
dB,
10K
ohm
(Main
Amp,
4
ohm,
43W)
GOCAK ED i525 oc ho coe hk os a ane ae er oe 1.5V/3V +1.5 dB, 100 ohm (Power Booster, 4 ohm, 43W)
Damping
Factor
5-03.
%
doa owe
Be
ee
eee
be
Be
HB
bnew
See
More
than
45
dB
(Lead
Wire
Terminals)
Signal to Noise Ratio (High/Low). ............... 0.000 ee eeae More than 80 dB (Full Power, 4 ohm)
LOad:
limped
anee
¢.i.
630
sip
Gok
ewan
eS
OS
ead
cs
bk
BOOS
EROS
ER
Rw
Me
eek
hte
4
to
16
0hm
ED GVA TSVOINS sh dees chip, Bess Ne Se ses rege das daa teks ah rca te enc pc sl so es Se See San tbe les helo 202(W) x 72(H) x 198(D) mm
UCU
CIN
Ge
eM
esk,
Bt
ces
A,
Si
tay
A
Nee
tan
eg
Bd
gk
eh
nd
cy)
ase
ae
SOS
Bin
weerunticia
Ge
nda
ade
ieee
AAP
th
det
2
kg
Block Diagram DIN INPUT
5 SP. INPUT
O[ o eo}o O O
hed
E001 R129/R130 (R)
D108, D109 R131/R132 (L)
D110, D111
Q103, 104, 105, 106 C111, 112, 113, 114
Q101, 102, T101 T102 L102, L103
RECTIFIER
RIPPLE
» FILTER CIRCUIT
POWER AMP.
CIRCUIT ©
Q107, 108, 109
D105, VR101
Mi
IC1
PONE SP. OUTPUT
_
mrs
POWER AMP.
VOLTAGE
STABILIZER
AND REGULATOR
CIRCUIT
/
D106, 107, L101
\
BATTERY LINE-PASS Q201, L201, L202
FILTER
RELAY
CIRCUIT SENSITIVITY
(CHANGE SW.)
IGNITION +B

Parts Locations and Disassembly Instruction
INPUT
SENSITIVITY
Switch
Lever
(HIGH/LOW)
POWER
Indicator
(Red)
(Sw001)
(D001)
INPUT SENSITIVITY ;
eo:
e*
MAIN
AMPLIFIER
:
@
WITH
PULSE
REGULATED
POWER
SUPPLY
MODEL 3002 5OW + 50W
5P INPUT Din Jack (E001)
Figure 1
O
—___
&
ae
Fuse
Holder
(4A)
Fuse Holder (20A)
Right Speaker
Output Lead (Gray) (J001) 3 Ty [ mee
: f : Power Lead
(To Battery)
(Yellow)
(JOO6)
sy,
Navi
Ground Lead (Black) (JO07)
Left Speaker Output Lead (Green) (J001)
Right Input Lead (Gray) (JOO3)
(For
use
as
a
power
booster)
+B
(For
Tuner/Deck
or
Radio
Player)
(Red)
(JO09)
Left Input Lead (Green) (JO04) Ground/Input Lead (Black) (JO05)
(For use as a power booster) (For use as a power booster)
Figure 2
Ignition Switch Lead (Red/White) (JOO8)

1.
Removal
of
Front
Panel
|
O
(1)
Remove
four
screws
marked
“®”
as
shown
in
Figure
1.
(2)
Take
care
of
lead
wires
with
an
input sensitivity
switch,
an
input
jacks
and
a
power
indicator.
2.
Removal
of
Top
&
Bottom
Covers
=
anit
|
Lennenee
(1)
Remove
four
screws
marked
“0”
as
shown
in
Be
Ore
Figure
3,
and
the
top
cover
can
be
removed.
(2)
Remove
four
screws
marked
‘‘@’’
as
shown
in
iii
Figure
4
and
the
bottom
cover
can
be
removed.
a
a
Teed? de ON es
Figure 3
ve
Figure 4
a
Figure 5
3. Removal of Rear Panel
(1) Remove six screws marked “0” as shown in
Figure 2 and the rear panel can be removed.
4. Removal of Relay P.C. Board
(1) Remove two screws marked “x " as shown in
Figure 5 and the relay P.C. Board can be removed.
5. Removal of Amplifier P.C. Board
(1) Remove four screws marked “*’ as shown in
Figure 6.
(2) Remove eight screws holding two !Cs and transis-
tors with the heat sink.
(3) The amplifier P.C. Board can be removed by
itself. Figure 6

Adjustment Procedures |
@ Output Voltage Adjustment VTVM
(Output Terminal: No load) Unit Under Test
(1) Set the DC supply voltage to 14V.
(2) Connect a VTVM to TP 3 and TP 4. (Figure 6)
(3) Rotate the semi-fixed variable resistor (VR102)
to be 55.0V DC on the voltmeter.
@ Cut-Off Circuit Adjustment
(1) Set the DC supply voltage to 10.40V.
(2) Connect an oscilloscope and a mili-voltmeter to Range at 30V or 50V
Figure 6
TP 1 and TP 2 (Figure 7) (Read this voltage value to be at 0 dB point.)
(3) Rotate the semi-fixed -variable resistor (VR101) Oscilloscope
fully
counterclockwise.
Mili-voltmeter
(4) Read voltage on the mili-voltmeter and its reading
is at O dB point. (Figure 7)
(5) Rotate the VR101 clockwise slowly and adjust it
to be —1 dB down from voltage as indicated in
above step (4).
Adjustment
Location
Figure
7
Relay P.C.Board
Bottom View
=e ee

Amplifier P.C.Board

Amplifier P.C.Board
Bottom View

Wiring Diagram
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