Sanyo MGP17 User manual

SERVICE MANUAL
STEREO
CASSETTE PLAYER
SANYO
MGP17
EUROPE
142 429 35 (Black)
142 429 36 (White)
SPECIFICATIONS
Power Source
DG snttinoxan Sach dhiSectn alee dees’ 3V
(UM-3, HP 7, AA Cell, Mignonzelle, R 6) x 2
Output Power ..............cebeccceeseecees 25mW x 2 (Max.)
Current Consumption (at Vol. Min.)
Playback mode ............0.....cceceeee 170mA
Fast Forward .............cc.ccceceseacees 240mA
Rewind mode ....................cceceees 240mA
Tape Speed ooo... cece cee eceeeeeeeeeees 1-7/8ips. +3%
Fast
Forward
................cccececnceusece
160sec.
(with
C-60)
Rewind
Time
..............c.cceeeeseceees
160sec.
(with
C-60)
Torque
Playback .........c.ccccsceceseeceeeueeeees 32 ~ 60g-cm
Fast
Forward/Rewind
...................
more
than
50g-cm
Wow & Flutter ................cceeseeeseeeee 0.5%, WRMS
Frequency
Response
.....................
63Hz
~
10,000Hz
Graphic EQ. Control (100Hz/1kHz/10KHz)
UO assacsidavicagserdsedes eget secede sectors +8dB +3dB
Ove Sits 8 Shes behets Ponts ieeeteasee ce -8dB +3dB
Signal
to
Noise
Ratio
..........0.0.........
more
than
43dB
Crosstalk
Track to Track ........................... more than 50dB
Channel
Separation
(with
Fe2O3)
.......
more
than
30dB
Hum & Noise (at Vol. Min.) ...........2.... —65dBs
Terminal Impedance
Headphone ................ccccceeeceeeaes 320,
Dimensions
...............0.e.cccaeas
86(W)
x
120(H)
x
36(D)mm
Weight (w/o battery) .............0.....008 225g (Approx.)
—Specifications subject to change without notice.—
WM-17085

DISASSEMBLY
INSTRUCTIONS
GENERAL REMARKS
@
Before
disassembling
the
unit,
spread
a
soft
rubber
mat
ora
cloth
on the
workbench
to
avoid
scratches
and
grease
stains.
@
Do
not
use
a
material
which
is
likely
to
cause
static
electricity
because
transistors
and
ICs
may
be
easily
damaged
by
it.
Reassemble
the
unit,
noting
the
kinds
of
screws,
the
soldering
and
arrangement
of
the
leads.
Refer
to
“Circuit
Diagram
and
Exploded
Views’
for
correct
assembly.
Before ‘disassembling the unit, take out the cassette tape
and the batteries.
CABINET BOTTOM REMOVAL
1.
Open
the
Cassette
Compartment
Lid
by
pressing
the
Stop
Button
and
take
out
the
cassette
tape
from
the
compartment.
Turn over the unit with the front side down on a soft surface
and remove the Battery Compartment Lid. Then, remove the
batteries.
Remove the four screws (1 ~ 4) fastening the Cabinet
Bottom and lift the Cabinet Bottom away from the unit.
Cabinet Bottom ©
4. Reassembie in reverse order.
P.C.BOARD REMOVAL
1.
Remove the Cabinet Bottom by following the instructions for
the “Cabinet Bottom Removal”.
Unsolder the FPC of the Graphic Equalizer from the
P.C.Board.
Remove the screw (5) fastening the P.C.Board.
Turn over the P.C.Board in the direction of the arrow with
caution not to damage the Playback Head and Motor leads.
ni
. Reassemble in reverse order.
NOTE:
When mounting the Amplifier P.C.Board, check to see that
the power switch operates correctly by pressing the Play
Button.
CASSETTE MECHANISM REMOVAL
. Remove the P.C.Board by following the instructions for
“Cabinet Bottom Removal” and “P.C.Board Removal”.
2. Remove the three screww (6 ~ 8) holding the Cassette
Mechanism.
3.
To
detach
the
Cassette
Mechanism,
lift
the
Mechanism
in
the
direction
of
the
arrow.
4. Reassemble in reverse order.

ADJUSTMENT
PROCEDURES
GENERAL
REMARKS
3.
While
Playing
back
the
test
tape,
adjust
the
tape
speed
by
©
Before
adjusting
the
mechanism
of
this
unit,
wipe
the
tape
turning
the
potentiometer
(P401)
on
the
P.C.Board
with
an
contacting
surfaces
of
the
Head,
Pinch
Roller
and
Capstan,
alignment
tool
until
the
frequency
counter
reads
3kHz.
and
the
surfaces
of
the
driving
parts
Such
as
the
Drive
Belt,
Take-up
Belt,
Flywheel
and
Pulley
with
a
soft
cloth
soaked
in
alcohol.
Trouble
may
occur
because
of
oil
and
grease
stains.
©
Carefully
handle
the
belt
because
grease
easily
attaches
to
it.
Then,
check
the
used
rubber
parts.
If
the
rubber
has
deteriorated
or
is
Scratched,
replace
the
Parts
with
new
ones.
EQUIPMENT
REQUIRED
©
Frequency
Counter
Dualtrace
Oscilloscope
VTVM
(2
sets)
Dummy
Load
(32:0)
Test
Tapes
#
3kHz
test
tape
(Example:
TEAC
MTT-111)
for
the
Tape
Speed
Adjustment
*
10kHz
test
tape
(Example:
TEAC
MTT-114)
for
the
Head
HEAD
AZIMUTH
ADJUSTMENT
Azimuth
Adjustment
1.
Connect
two
VTVMs
and
a
dualtrace
Oscilloscope
to
the
©
Alignment
Too!
Headphone
Jack
as
illustrated,
NOTE:
Set
the
osci
lloscope
as
follows:
Before
the
Electrical
Adjustments,
set
the
Switch
and
EM
ODE
siscasntpsi
tir
scnesslecicve:
CHOP
(chopped)
Control
as
follows:
B
SQURCE
kee
elt
cuag
i
«:
INT
(internal),
CH1
or
CH2
¥
VOLUME
COMLNOL
sseevsssessdovisaresoasedectessec:
As
desired
PSWEEP
MODE
o.oo
occcscccscscas
cs...
AUTO
(automatic)
#
Graphic
EQ.
Controls
«00...
0
(click
position)
#
Install
new
two
batteries
to
the
battery
compartment
for
the
adjustment.
TAPE
SPEED
ADJUSTMENT
1.
Remove
the
Battery
Compartment
Lid
and
take
out
the
batteries
from
the
compartment,
and
connect
the
regulated
DC
3V
power
Supply
to
the
Ext.
Power
Jack.
2.
Connect
a
frequency
counter
to
the
Headphones
Jack
as
illustrated
and
insert
a
3kHz
test
tape
(Example:
TEAC
MTT-111)
into
the
Cassette
Compartment.
Frequency
Counter
LJoloooigo] a
[Fic cong: Gd
:
I
PHONES
2.
Insert
a
10kHz
test
tape
(Example:
TEAC
MTT-114)
into
the
Cassette
Compartment
and
play
it
back.

ADJUSTMENT
PROCEDURES
(continuea)
3.
While
playing
back
the
test
tape,
slowly
turn
the
azimuth
adjusting
screw
until
the
amplitudes
of
both
channel
output
waveforms
become
maximum
and
the
waveforms
overlap
as
well
as
possible
as
illustrated.
:
Then
the
VTVMs
must
be
read
at
the
maximum
as
much
as
possible.
Azimuth Adjusting
Screw
4.
After
the
adjustment,
secure
the
adjusting
screw
with
paint
or glue.
PARTS LIST
fet.
Part
No.
Description
Q’ty
oe
Part
No.
Description
Q’ty
PACKAGE
CA8
141-2-4219-30001
Screw,
+M1.7x10.0
(Black)
6
141-6-1419-88602
Individual
Carton
1
CA8
141-2-4219-30001
Screw,
+M1.7x10.0
(White)
2
141-6-1469-13300
Case
Styrofoam
1
CA8-1
141-2-4219-30002
Screw,
+M1.7x10.0
(White)
4
141-6-2519-12090
Poly
Cover
1
CAQ
141-2-3829-45200
Spring
Battery
1
141-6-3919-52100
Plain
Pad
1
CA10
—-
141-2-1639-63200
Knob
Volume
1
141-6-4559-03300
Serial
No.
Sheet
3
CAI
141-2-3829-45100.
Spring
Battery
Anode
1
141-6-4559-03979
Label
Color
BK
(Black)
1
CA12
—-141-2-1339-38000
Lid
Battery
(Black)
1
141-6-4559-03952
Label
Color
W
(White)
1
CA12
141-2-1339-38003
Lid
Battery
(White)
1
CA13.
—s-
141-2-4419-20100
Sheet
3
CA14.
—
141-2-1129-41403
Cabinet
Bottom
(Black)
1
ACCESSORIES
CA14
—«-141-2-1129-41404
Cabinet
Bottom
(White)
1
¢
4-1529-70671
Headphones
1
142-6-4119-32947
Instruction
Book
1
Cx1
128-3-1314-04018
Pl
Screw-3,
Pan
Hd.,
+M1.4x4.0
1
CX2
428-3-1317-04014
Pl
Screw-3,
Pan
Hd.,
+M1.7x4.0
1
CX3
443-3-1302-00618
Screw,
Pan
Hd.
Tapping-B,
+M2.0x6
1
CABINET
Cx4
110-3-2101-70013
Spring
Washer-2,
M1.7
1
CAI
141-0-1249-40002
Lid
Cassette
Assy
(Black)
1
CAI
141-0-1249-40003
Lid
Cassette
Assy
(White)
1
PCBI1
141-0-1939-14001
Amplifier
P.C.B.
Assy
1
CA2
4-2262-25860
FPC,
Equalizer
i
PCB2
_
141-0-1939-14130
Graphic
Equalizer
P.C.B.
Assy
1
CA3
141-2-3659-21900
Holder
Equalizer
(Black)
1
CA3
—_—-141-2-3659-21901
Holder
Equalizer
(White)
1
NOTE:
CA4
—141-2-4219-21700
Screw,
+M1.4x4.0
3
1.
Parts
order
must
contain
Model
Number,
Part
Number
and
CAS
141-2-8549-17200
Spring
Eject
1
Description.
CAG
141-2-1419-18615
Rating
Plate
1
2.
Ordering
quantity
of
screws
and
resistors
must
be
multiple
of
CA?
141-0-1129-18300
Cabinet
Top
Assy
1
10
pcs.
Adjustment

CABINET EXPLODED VIEW
—5—
CA8 (Black) (Red)
S—
CA8-1
(White)
(Blue)
(Yellow)
CA8-1 (White) (Blue) (Yellow)
Ref.
No. Part No.
HEADPHONES PARTS LIST
Description Q’ty
HEADPHONES
4-1529-70671
141-0-1769-01701
141-2-1259-10300
141-2-1259-10400
4-1529-70680
141-2-4469-55800
4-2369-76090
anh wh ~~ +
NOTES:
Headphones -
Headphone Band Assy
Housing Left
Housing Right
Ear Speaker
Ear Pad
Plug Cord
|anne-- —
1.
Parts
order
must
contain
Model
Number,
Part
Number
and
Description.
HEADPHONES
EXPLODED
VIEW

MECHANISM PARTS LIST
ner Part No. Description Q’ty
MECHANISM
MC1 141-0-3119-25000 Chassis Assy 1
MC2 141-2-4459-33400 Cushion Motor 1
MC3 4-5279-71470 Motor [M1] 1
MC4 141-0-7419-42600 Lever Play Assy 1
MC5 141-2-3529-46200 Head Base 1
MC6 141-2-8519-47400 Spring Head 1
MC7 141-4-2429-72390 Playback Head [HD1] 1
MC8& 141-2-4219-24500 PC Screw, Pan Hd.-3, +M2.0x4.0 1
MCc9 141-2-8559-02500 Spring Supply 1
MC10 ~—- 141-2-4539-18100 Washer, M1.6x3.0x0.13 1
MC11 141-0-5369-01901 Reel Supply Assy 1
MC12 = 141-2-4539-17500 Washer, M1.25x3.0x0.25 2
“MC13 = 141-2-4539-30600 Washer, M1.25x4.0x0.25 1
MC14 =: 141-2-5519-47200 Gear F.FWD 1
MC15 —- 141-0-5459-02000 Pinch Roller Assy 1
MC16 = 141-2-8529-25800 Spring Pinch Roller 1
MC17 —-141-2-4539-35000 Washer, M1.6x3.2x0.4 1
MC18 = 141-2-4539-27601 Washer, M2.1x3.5x0.13 2
MC19 141-2-8519-07500 Spring Lever Stop 1
MC20 =. 141-2-4539-19800 Washer, M2.1x5.0x0.13 2
MC21 141-0-5219-11900 Flywheel Assy 1
MC22 = 141-2-5649-25700 _ Belt Drive 1
MC23 = 141-2-4729-09200 Lug 1
MC24 ~—- 141-2-4219-10600 Screw, +M1.7x4.0 1
MC25 ~—s- 141-0-7419-39601 Lever Stop Assy 1
MC26 ~—- 141-0-7419-39501 Lever Rewind Assy 1
MC27 ~—s: 141-2-7439-31000 Arm Review 1
MC28 = 141-2-8529-14600 Spring Plate Lock 1
MC29 ~—s-: 141-2-3519-64901 Plate 1
MC30 =: 141-2-8549-06800 Spring Plate Lock © {
MC31 141-2-8519-71200 Spring 2
MC32 = 141-2-4219-29900 Screw, Pan Hd. Tapping-B +M1.7x4.0 4
MC33 —- 141-2-7439-31100 Arm Power 1
MC34 + 141-0-5319-07302 Reel Take-up Assy 1
MC35 ~—s- 141-2-8529-11700 Spring Cancel ASO 1
MC36 —- 141-0-3519-21500 Plate Reel Assy 1
MC37 —- 141-2-4539-13000 Washer, M1.6x4.0x0.13 1
MC38 141-2-5519-47000 Pulley Take-up 1
MC39 = 141-2-5649-09900 Belt Take-up 1
MC40 =: 141-2-8549-18200 Spring 1
MC41 141-2-7439-30700 Arm Take-up 1
MC42 141-2-5519-47500 Gear Take-up 1
MC43.—s- 141-2-4539-15700 Washer, M1.5x3.5x0.4 1
MC44 ~—s- 141-0-7419-39401 Lever Fast Assy 1
MC45 ~—s- 141-2-5519-47100 Gear Fast 1
MC46 ~—s-: 141-2-7319-57300 Plate Lock 1
MZ1 101-3-1802-00311 Screw, Truss Hd., -+M2.0x3 1
MZ2 101-3-3702-00611 Screw, Bind Hd., =M2.0x6 1
MZ3 128-3-1317-03518 Pl Screw-3, Pan Hd., +M1.7x3.5 1
MZ4 112-3-1301-50082 E Ring, M1.5 1
NOTES:
1. Parts order must contain Model Number, Part Number and
Description.
2. Ordering quantity of screws and resistors must be multiple of
10 pes.
(Chassis Top)
MECHANISM EXPLODED VIEW
&—mecl2
MC11
mctO
S mcg
gy
g
o&—we13
MCs Co >—wers
do—mz4
MC15

MECHANISM EXPLODED VIEW «continuea)
(Chassis Bottom)
MC46

P.C.BOARD PARTS LIST
Ref. Part No. Description Q’ty oer Part No. Description Q’ty
AMPLIFIER P.C.B. ASSY C602. = CG1-8-2500-KHOOB Chip Capacitor 0.00184F 50V +10% 1
PCBI 441-0-1939-14001 Amplifier P.C.B. Assy 1 C603 CG2-7-2500-KHOOB ChipCapacitor 0.0027uF 50V +10% 1
141-2-4729-05000 Staple, 5mm ; 17 C604 CG8-2-2500-KHOOB ChipCapacitor 0.00824F 50V +10% 1
Ji 4-2359-77750 — Jack 3P (Headphones) 1 C605 CG1-2-3250-KHOOB Chip Capacitor 0.012uF 25V +10% 1
J2 4-2359-78080 Ext. Power Jack 1 C606 CG1-0-3250-KHOOB Chip Capacitor O.01uF 25V +10% 1
S1 4-2319-76920 Leaf Switch (Power) 1 C701 CG1-0-4250-ZI00B Chip Capacitor O1uF 25V +80-20% 1
P401 4-2229-76480 Potentiometer, B-2.2k0. 1 R501 401-038-6406 Chip Resistor 47kQ 10W +5% 1
VRO1 4-2229-75580 Rotary Volume (Volume/A-20kQ) 1 R502 401-037-6803 Chip Resistor 12kQ 1N0W +5% 1
TH401 4-2219-70540 Thermistor, 200 1 R503 401-038-9209 Chip Resistor 6.8kQ 110W +5% 1
or 204-5-9000-00200 . Thermistor, SDT 20 1 R504 401-038-6406 Chip Resistor 47kQ 110W +5% 1
10301 4-2069-75070 IC,BA3506A 1 R505 401-038-6406 Chip Resistor 4.7kQ 110W +5% 1
1C401 =. 207-5-1895-52310 + IC, LA 5523 1 R506 401-038-0800 Chip Resistor 22kQ 1/10W +5% 1
C101 = CC1-0-2500-KEOQ1R Ceramic 0.001uF 50V +10% 1 R507 401-037-9309 Chip Resistor 18kQ 1N0W +5% 1
C102 CD3-3-663A-0001V Electrolytic 33uF 6.3V 1 R508 401-037-9309 Chip Resistor 18kQ 110W +5% 1
C103. = CM2-2-3500-JOOBV Mylar 0.022uF 50V +5% 1 R509 401-038-3702 Chip Resistor 33kQ 1/10W +5% 1
C104 CD4-7-5500-0001V Electrolytic 47uF 50V 1 R510 401-038-0800 Chip Resistor 22kQ 1N0W +5% 1
C105 CD4-7-5500-0001V Electrolytic 474F 50V 1 R511 401-037-5806 Chip Resistor IMO 110W +5% 1
C106 CC1-0-2500-KE01R Ceramic 0.001mF 50V +10% 1 R601 401-038-6406 Chip Resistor 47kQ 110W =+5% 1
C107 ~=CT1-0-563A-MO0OAV Tantalum wF 63V +20% . 1 R602 401-037-6803 Chip Resistor 12kQ 1/0W +5% 1
C108 CD2-2-7100-0001V Electrolytic 220uF = 10V 1 R603 401-038-9209 Chip Resistor 6.8kQ 1/10W +=5% 1
C201 CCi-0-2500-KE01R Ceramic 0.001MF 50V +10% 1 R604 401-038-6406 Chip Resistor 4.7kQ 110W +5% 1
C202 = CD3-3-663A-0001V Electrolytic 33uF 66.3V 1 R605 401-038-6406 Chip Resistor 4.7kQO 110W +5% 1
C203. CM2-2-3500-JOOBV Mylar 0.022uF 50V +5% 1 R606 401-038-0800 Chip Resistor 22k. 10W +5% 1
C204 = CD4-7-5500-0001V Electrolytic 4.74F =650V 1 R607 401-037-9309 Chip Resistor 18kQ 110W +5% 1
C205 CD4-7-5500-0001V Electrolytic 47uF 50V 1 R608 401-037-9309 Chip Resistor 18kKQ 1/10W +5% 1
C206 = CC1-0-2500-KE01R Ceramic 0.001MF 50V +10% 1 R609 401-038-3702 Chip Resistor 33kQ 1/10W +5% 1
C207 = CT1-0-563A-MO0AV = Tantalum 1uF 63V +20% 1 R610 401-038-0800 Chip Resistor 22k. 10W =+5% 1
C208 CD2-2-7100-0001V Electrolytic 220uF =10V 1 R611 401-037-5806 Chip Resistor 1MQ 110W +5% 1
C301 CD3-3-663A-0001V Electrolytic 33uF 6.3V 1
C302 = CD2-2-7100-0001V Electrolytic 220MF =10V 1
C303 CD2-2-7100-0001V Electrolytic 220uF = 10V 1 NOTES:
C304
CD2-2-7100-0001V
Electrolytic
220MF
=10V
1
1.
Parts order
must
contain
Model
Number,
Part
Number
and
C401 CD2-2-5500-0001V Electrolytic 2.2uF 50V 1 Description.
C402
—CD2-2-6160-0001V
Electrolytic
22uF
16V
1
2.
Ordering
quantity
of
screws
and
resistors
must
be
multiple
of
R101 401-029-9706 Carbon 2200 1/8W +5% 1 10 pes.
R102 401-032-0608 Carbon 5.6kQ 1/8W =5% 1.
R103 401-029-2004 Carbon 150kQ 1/8W =+5% 1
R201 401-029-9706 Carbon 2200 1/8W +5% 1
R202 401-032-0608 Carbon 5.6kQ 1/8W +5% 1
R203 401-029-2004 Carbon 150kQ 1/8W +5% 1
R301 401-031-8308 Carbon 560 1/8W +5% 1
R302 401-028-3200 Carbon 1kQ 1/8W +5% 1
R401 401-029-7900 Carbon 2000 1/8W +5% 1
R402 401-031-2405 Carbon 3.9kQ 1/8W +5% 1
R403 401-031-6601 Carbon 4.7kQ 1/8W 45% 1
R404 401-032-4606 Carbon 6.8kQ 1/8W +5% 1
GRAPHIC EQUALIZER P.C.B. ASSY
PCB2 141-0-1939-14130 Graphic Equalizer P.C.B. Assy
141-0-1939-15420 PCB, Graphic Equalizer
4-2262-27420 FPC, Graphic Equalizer
141-2-2899-55800 Adhesive Sheet
141-2-4359-42400 Insulator
VR2 4-2229-76390 Slide Volume (Equalizer/W-100kQ)
Q501 203-5-4422-81216 Transistor, 2502812
Q601 203-5-4422-81216 Transistor, 2SC2812
C501. = CG3-9-1500-KHOOB Chip Capacitor 390pF 50V +10%
C502) = CG1-8-2500-KHO0B ChipCapacitor 0.0018uF 50V +10%
C503 €CG2-7-2500-KHOOB ChipCapacitor 0.0027uF 50V +10%
C504 = =©CG8-2-2500-KHOOB ChipCapacitor 0.0082uF 50V +10%
C505 CG1-2-3250-KHOOB Chip Capacitor 0.012uF 25V +10%
C506 CG1-0-3250-KHOOB Chip Capacitor O.01uF §=625V +10%
C601 = =CG3-9-1500-KHOOB Chip Capacitor 390pF 50V +10%
Pa ne a Car a en on rr Cone Cs Ce Cn
—~10—

IC
&
TRANSISTOR
LEAD
IDENTIFICATION
TRANSISTOR
|
FRONT
VIEW
|
BOTTOM
VIEW
28C2812
TERMINAL
NAMES
B—
BASE
C—
COLLECTOR
E—
EMITTER
.
BA3506A
BOTTOM
VIEW
LA5523
FRONT/
BOTTOM
VIEWS
il
}
2
5
BA3506
BLOCK
DIAGRAM
LA5523
BLOCK
DIAGRAM
Bias
PreiN)
=
Pre
NF}
Pre
OUT!
Power
INI
Power
OUT!
Ne
15
|
GND
Vref
OUT}
Vref
OUT
2

AMPLIFIFER
P.C.BOARD
&
WIRING
DIAGRAM
(BOTTOM VIEW):
3} 14)15 | 16
451.4 | 1.4
1
1.4} 1.4] 1.4
11 | 12
1.44 1.
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eG
(3)
mo
s
°°.
>

SCHEMATIC DIAGRAM
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soso
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StHdVYS
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(LHOIS)
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10
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10
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Ag'9
495
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|
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1028
2029
QV3H NOVAAV Id
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—~13-—

GRAPHIC EQ. CONTROL P.C.BOARD
VR2
GRAPHIC EQ VOLUME CONTROL ‘8
TO AMPLIFIER
GRAPHIC EQ. CONTROL SCHEMATIC DIAGRAM
aso1 2SC2812
R509
3K
N 50, 504 c506 Bar
“i 2
W-10X6 1800P 8200P Ooty
¢701
Only
FE E] oO] cj] B) A
IN OUT GND-Vcc OUT IN
——____/
TO AMPLIFIER
SANYO ELECTRIC TRADING CO., LTD.
OSAKA, JAPAN
March/’86/2,200
Printed in Japan