Sanyo M4440 User manual

SERVICE MANUAL
MINI CASSETTE STEREO
_— M4440
142 33801
SPECIFICATIONS
Power Source 7 Fast Forward Time ............. 150sec. (C-60 cassette)
DEA Aad 6V (UM-3, HP 7, AA Cell, Mignonzellen, R6}x 4 Rewind Time................. 150sec. (C-60 cassette)
Output Power ................ 30 mW (maximum) Frequency Response ............ 63 — 10kHz
Current Consumption (at VR min) Signal to Noise Ratio... .......... 45dB
Playback mode............... 110mV Crosstalk (with Fe203}
Fast Forward mode............ 140mV Track to Track... 2. ...00200.. 55dB
Rewind mode ............... 140mV Channel Separation. .......20:... 33dB
WapeSpeed?: & oc 2 y's ek Wet aae ales 1-7/8ips. +3% Hum & Noise... 2... ee eee 43dBs (Vol max.)
Wow & Flutter... 2.0.0... ee 0.35% (WRMS)
Specifications subject to change without notice.—
WM-5957
Seo

MECHANICAL
ADJUSTMENTS
GENERAL REMARK
Before adjusting the mechanism of this unit, wipe the tape
contacting surfaces clean as well as the contacting surfaces of
the driving parts with a soft cloth soaked in alcohol. Trouble
may occur because of oil and grease stains.
FLYWHEEL THRUST ADJUSTMENT
The clearance between the Flywheel Thrust and the Flywheel
should be 0.1 —O.2mm with the Chassis upside down. If
necessary, adjust the clearance with the following procedure.
1. While moving the Capstan up and down, slowly turn the
Flywnee! Thrust clockwise to obtain the clearance of ‘’0”
(zero) between the Flywheel Thrust and Flywheel.
Adjustment
Flywheel Support = — Flywheel Thrust
0.1 — 0.2mm
¢ Capstan
Flywheel
NOTE:
Do not turn the Flywheel Thrust forcibly.
2. Turn the Flywheel Thrust counterclockwise by approxi-
mately 45° from the zero clearance position.
3. After the adjustment, secure the Flywheel Thrust with paint
or glue.
POWER SWITCH POSITION ADJUSTMENT
1. Press the play button.
2.
While
slowly
pushing
the
F.F.
button,
check
to
see
that
the
Power
Switch
once
opens,
then
closes
after
the
F.F.
Gear
and
Take-up
Gear
engaged.
3.
If
necessary,
loosen
the
screw
fastening
the
Power
Switch
and adjust the switch position by moving the Power Switch
as illustrated.
Power Switch
Take-up Gear
4. After the adjustment, tic’ 1 the screw and secure the screw
with paint or glue.

ELECTRICAL ADJUSTMENTS
EQUIPMENT REQUIRED
@ VTVM
@ Frequency Counter
@ Dummy Load (34 ohm)
@ Test Tapes
* 3kHz Test Tape for the Tape Speed Adjustment
* 10kHz Test Tape for the Head Azimuth Adjustment
@ Alignment Too!
NOTE:
Before the Electrical Adjustments, set the unit as follows:
© Talk: SWITGRY cs. 45 5.452 Ge ve apa tie eae ae aes OFF
® “TOME: SWIC: ed Selva Reeser Tanna a ee oe ae Be a High
* Balance Control..............- O (Center Position)
* Pitch Control ............0.- 0 (Detent Position)
* Supply a regulated DC 6V power to the DC 6V Jack (J2).
TAPE SPEED ADJUSTMENT
1. Remove the Battery Compartment
Batteries from the compartment.
Lid and take out
2. Connect a frequency counter to the Headphone Jack (J1) as
illustrated and insert a 3kHz test tape into the cassette
compartment.
34 ohm =
Dummy Load 7
Frequency Counter
3 kHz (43%)
l HEAD
@ pyones
3. While playing back the test tape, adjust the tape speed by
turning the potentiometer (P301) on the P.C.Board with an
alignment too! until the frequency counter reads 3kHz.
Adjustment
R/P HEAD AZIMUTH ADJUSTMENT
1. Remove the cassette compartment lid by following the
instructions for it.
2. Connect a VIVM to the Headphones Jack as illustrated and
play back a 10kHz test tape.
34 ohm
Dummy Load yi,
VTVM (Max.}
@ pee
PHONES
Adjustment
Play Back Head
Adjusting Screw
NO.1 position
LEFT Channel
NO.3 position Adjustment
NO.2 position
RIGHT Channel
3. Turn the azimuth adjusting screw until the Left channel on
the VTVM becomes maximum. (No. 1 position)
4, Reconnect the VTVM to the Right channel.
5, Then, turn the azimuth adjusting screw again until the Right
channe! output on the VTVM becomes maximum. (No. 2
position)
6. Turn the adjusting screw to the center of the No.1 and No. 2
positions as illustrated. (No. 3 position)
7. Repeat the above described adjustment several times.
8. After the adjustment, secure the adjusting screw with paint
or glue.

Part No.
PACKAGE
PARTS LIST
Description
Description
AMPLIFIER P.C.B. ASSY
141 6 1419 53100
141 6 1419 53200
141 6 1449 70800
141 6 2519 12090
141 6 2519 15026
141 6 3919 39000
141 6 4559 00100
Case Top
Case Bottom
Styrofoam Case
Poly Cover
Poly Cover
Plain Pad
Seria! No. Sheet
ACCESSORIES
4 1529 70200
4 2419 73972
141 2 1769 05100
141 2 1819 12000
141 2 1829 04000
141 6 4419 18100
142 6 4119 12200
Headphone
Cassette
Shoulder Strap
Carrying Case
Cassette Pouch
Caution Tag
Instruction Book
CABINET
4 1539 70620
0 1119 68406
0 1119 74700
0 1339 09302
2 1119 64902
2 1119 69600
2 1419 12800
2 1519 27500
141 2 1619 77000
141 2 2149 15300
141 2 2529 03100
141 2 3899 10100
141 2 4219 04001
141 2 4469 34600
141 2 4469 36500
141 2 7529 90200
101 3 1302 00411
103 3 1302 00511
127 3 1317 03018
202 5 8220 14120
141 2 1619 76900
141 2 2449 37000
141 2 3229 31900
141 2 4729 00100
101 31302 00611
131 3 1302 00411
CC1 0 2500 KEOOC
141 2 4469 31800
141
141
141
141
141
141
141
Microphone
Completed Cabinet Top
Cabinet Bottom Assy
Battery Lid Assy
Cabinet Front
Cabinet Jack
Rating Plate
Microphone Grille
Pause Button
Cabinet Bracket
Shaft
Microphone Holder
Screw M2.0x6
Cushion
Cushion
Bottom Post
Screw, Pan Hd. +M2.0x4
Screw, Pan Hd. Tapping-2 +M2.0x5
PC Screw, Pan Hd.-1 +M1.7x3.0
Diode, SLP141B (Operation)
Microphone Sensor Button
Sheet
Shield Plate
Lug
Screw, Pan Hd. +M2.0x6
Screw, Pan Hd. C SW +M2.0x4
Ceramic 0.001 uF 50V +10%
Damper
AMPLIFIER P.C.B.
ASSY
BSH hes WH am Ba pYNAINA
4 1329 76510
2 1639 40300
2 4219 23500
2 1639 37401
2 4219 08900
2 1639 37501
2 4219 08900
101 3 1302 00311
141 2 4179 04400
141 2 4729 04700
141 2 4729 05000
4 2359 75260
4 2359 72954
4 2319 74420
42319 74410
CC8 2 1500 KEOOC
CD10 5500 0002V
CD4 7 663A 0002V
CM3 3 3500 KOOMV
CD10 6160 0002V
CM6 8 3500 KOOMV
CD4 7 5250 0002V
141
141
141
141
141
141
| Amplifier P.C.B. Assy
Control Knob
Screw
Control Knob
Screw
Speed Control Knob
Screw
Screw, Pan Hd.
Plate Nut
Staple 10
Staple 5
Jack 1P (Headphones)
Ext. Power Socket
Slide Switch (Tone)
Slide Switch (Talk)
Ceramic 820 pF
Electrolytic 1 uF
Electrolytic 47 wF
Mylar 0.033 uF
Electrolytic 10 pF
Mylar 0.068 nF
Electrolytic 4.7 uF
+M2.0x3
50V +10%
25V
Sa CC (gE GY
CC1 0 2500 KEOOC
CC1 0 2500 KEOOC
CD2 2 663A 0002V
CM6 8 3500 KOOMV
CM1 0 3500 KOOMV
CD10 763A 0002V
CD2 2 7100 0001V
CD3 3 7100 0001V
CCS 6 1500 KEOOC
CC8 2 1500 KEOOC
CD1 0 5500 0002V
CD4 7 663A 0002V
CM3 3 3500 KOOMV
CD1 0 6160 0002V
CM6 8 3500 KOOMV
CD4 7 5250 0002V
CC1 0 2500 KEOOC
CC1 0 2500 KEO00C
COD2 2 663A 0002V
CM6 8 3500 KOOMV
CM1 0 3500 KOOMV
CD1 0 763A 0002V
CD2 2 7100 0001V
CD3 3 7100 0001V
CC5 6 1500 KEOOC
CD2 27100 0001V
CC1 0 2500 KEOOC
CD10 7100 0001V
CA2 2 4100 MOOOV
CM3 9 2500 KOOMV
CM1 0 3500 KOOMV
CD10 7100 0001V
CD2 2 7100 0001V
CD47 7100 0001V
CD4 7 7100 0001V
202 5 9530 44810
206 5 1084 14010
206 5 1084 14010
206 5 0793 16020
4 2539 70850
4 2539 70840
4 2229 72640
203 5 5000 53650
203 5 5000 53650
203 5 6980 59860
203 5 5210 53660
203 5 5210 53660
203 5 4830 60860
203 5 5210 53660
203 5 5210 53660
203 5 4830 60860
RP4 7 3121 JTOOO
RP1 0 3121 JTOOO
RP1 0 1121 JTOOO
RP3 6 2121 JTOOO
RP1 0 4121 JTOOO
RP1 23121 JTOOO
RP1 2 2121 JTOOO
RP2 2 1121 JTOOO
RP1 00121 JTOOO
RP1 0 2121 JTOOO
RP1 0 3121 JTOOO
RP1 20121 JTOOO
RP4 7 3121 JTOOO
RP1 0 3121 JTOOO
RP10 1121 JTOOO
RP3 6 2121 JTOOO
RP1 0 4121 JTOOO
RP1 2 3121 JTOO0O
RP1 2 2121 JTOOO
Ceramic
Ceramic
Electrolytic
My lar
Myl!ar
Electrolytic
Electrolytic
Electrolytic
Ceramic
Ceramic
Electrolytic
Electrolytic
Mylar
Electrolytic
Mylar
Electrolytic
Ceramic
Ceramic
ectrolytic
yiar
ylar
ectrolytic
Electrolytic
ectrolytic
0.001 pF
0.001 uF
22 uF
0.068 uF
0.01 uF
100 uF
220 uF
330 uF
560 pF
820 pF
Tur
47 uF
0.033 uF
10 uF
0.068 pF
4.7 uF
0.001 pF
0.001 uF
22 uF
0.068 uF
0.01 uF
100 pF
220 uF
330 BF
560 pF
220 pF
0.001 uF
100 pF
0.22 pF
0.0039 uF
0.01 uF
100 pF
220 pF
470 uF
470 pF
E
M
M
E
ytic
Ceramic
Electrolytic
Aluminum
Mylar
Mytar
Electrolytic
Electrolytic
Electrolytic
ectrolytic
Diode, DS448
IC, LA4140
IC, LA4140
IC, LA3160T
Choke Coil (200 uH)
Choke Coil (220 pH)
Potentiometer (B-350)
Transistor, 25C536
Transistor, 2SC536
Transistor, 2SB598
Transistor, 2SC536
Transistor, 2SC536
Transistor, 2SA608
Transistor, 2SC536
Transistor, 2SC536
Transistor, 2SA608
Pretty 47k ohm
Pretty 10k ohm
Pretty 100 ohm
Pretty 3.6k ohm
Pretty 100k ohm
Pretty 12k ohm
Pretty 1.2k ohm
Pretty 220 ohm
Pretty 10 ohm
Pretty 1k ohm
Pretty 10k ohm
Pretty 12 0hm
Pretty 47k ohm
Pretty 10k ohm
Pretty 100 ohm
Pretty 3.6k ohm
Pretty 100k ohm
Pretty 12k ohm
Pretty 1.2k ohm

Part No.
RP2 2 1121
RP10 0121
RP1 0 2121
RP10 3121
RP1 20121
RP1 2 2121
RP6 8 1121
RP8 2 212i
RP8 2 2121
RP3 3 4121
RP1 0 3121
RD3 0 A251
RD3 3 0251
RP1 0 3121
RP2 2 2121
RP43 1121
RP30 1121
RP2 2 3121
RP3 3 2121
RP15 1121
RP10 4121
RP1 2 3121
RP3 3 2121
RP4 7 2121 JTOOO
RP3 3 2121 JTOOO
RP3 9 1121 JTOOO
RP8 2 0121 JTOOO
RP1 2 1121 JTOOO
204 5 9000 01000
4 2229 73400
4 2229 71912
4 2229 73223
PARTS LIST (Continued)
Description
MECHANISM
Description
220 ohm
10 ohm
1k ohm
10k ohm
12 0hm
1.2k ohm
680 ohm
8.2k ohm
8.2k ohm
330k ohm
10k ohm
3 ohm
33 ohm
10k ohm
2.2k ohm
430 ohm
300 ohm
22k ohm
3.3k ohm
150 ohm
100k ohm
12k ohm
3.3k ohm
4.7k ohm
3.3k ohm
390 ohm
Pretty 82 ohm
Pretty 120 ohm
Thermister, SDT100
Volume Control (Volume, A-20k)
Volume Control (Balance, B-20k)
Volume Control (Pitch, B-8k)
+5%
+5%
+5%
+5%
+5%
+5%
+5%
45%
+5%
+5%
+5%
+5%
+5%
+5%
+5%
+5%
+5%
+5%
+5%
+5%
+5%
+5%
+5%
+5%
+5%
+5%
+5%
£5%
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/4W
1/4W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
1/8W
Pretty
Pretty
Pretty
Pretty
Pretty
Pretty
Pretty
Pretty
Pretty
Pretty
Pretty
Carbon
Carbon
Pretty
Pretty
Pretty
Pretty
Pretty
Pretty
Pretty
Pretty
Pretty
Pretty
Pretty
Pretty
Pretty
MECHANISM
4 2319 71860
42319 74750
4 2429 71210
4 5279 70904
0 3119 16103
0 3789 01300
105219. 08100
1 0 5369 00701
1 0.5369 01100
0 5419.01000
1 0 5519 06200
107319 17301
107419 19706
07419 19806
0 7419 19906
141 07419 20106
141 0 7419 20200
141 0 7419 20300
141 0 7439 05600
141 0 7439 05701
141 0 7439 05800
141
141 22449 37100
141 2 2449 37600
141 2.3159 02400
141 23529 18101
141 2 4179 01800
141 2 4219 03000
141 2 4219 04000
141 2 4219 09000
141 2 4219 11400
141 2 4459 15900
141 2 4469 00500
141 2 4469 17200
141 2 4539 06900
141 2 4539 08000
Leaf Switch (Power)
Leaf Switch (Muting)
Play Head
Motor
Chassis Assy
Motor Bracket Assy
Flywheet Assy
Reel Plate Assy
Completed Ree! Plate
Pinch Roller Assy
Take-up Idler Assy
Slide Base Assy
F.F. Lever Assy
Rewind Lever Assy
Play Lever Assy
Stop Lever Assy
Lock Plate Assy
Select Crank Assy
Eject Lever Assy
Record Lock Lever Assy
Take-up Pulley Arm Assy
ensor Lever Assy
Sheet
Sheet
Handle Bracket
Spacer, Head
Nut
Screw M2.0x3
Screw M2.0x6
Screw M2.0x2
Screw M2.0x5.5
Motor Cushion
Flywheel Thrust
Cushion
Washer
Washer
a eh ed ND eID Sn ed a a ee a es eli as ee es
141 2 4539 09300
141 2 4539 24600
41 2 4619 00901
141 2 4729 04000
141 2 4729 07000
141 2 5519 23300
141 2 5519 31500
141 2 5649 10800
141 2 5649 10900
141 2 5649 12800
141 25719 07700
141 2 5719 07800
141 2 5729 14100
141 2 7149 02700
141 2 7419 52300
141 27419 52600
141 2 7439 13300
141 2 7539 01700
141 2 8119 06000
141 2 8139 04100
141 2 8219 17800
141 2 8219 24800
141 2 8459 02601
141 2 8519 12200
141 2 8519 33000
141 2 8519 43000
141 2 8519 47400
141 2 8519 50701
141 2 8519 57300
141 2 8519 63600
141 2 8519 74700
141 2 8519 75100
141 2 8519 75700
141 2 8519 77000
141 2 8539 31500
141 2 8549 06000
101 3 1302 00411
101 3 2502 00811
110 3 1102 00023
110 3 3202 00082
112 3 1301 50082
112 3 1302 00082
131 3 1302 00411
141 2 4469 17200
NOTES: 1.
141 2 5719 09000
Washer
Washer
Brake Tube
Lug
Lug
F.F, Gear
Drive Idler
Take-up Belt
Drive Beit
Counter Belt
Spacer
Spacer
Spacer’
Capstan Metal
Brake Plate
Shut-off Lever
Select Lever
Review Lever
Post
Counter
Counter Bracket
Spacer, Pinch Roller
Tape Guide
Flywheel Plate
Spring, Motor Lack
Spring, Index Lock Lever
Spring, Locker
Spring, Head
Spring, Play Lever
Spring, Stop Lever
Spring, Brake
Spring, Brake
Spring, Record Lock
Spring, Pinch Roller
Spring, Lock Plate
Spring, Cassette
Spring, Slide Base
Screw, Pan Hd.
Screw, Cylinder Hd.
Smaii Round Washer
Tooth Outer Washer-B
E Ring
E Ring
Screw, Pan Hd. C SW
Cushion
+M2.0x4
-M2.0x8
M2.0
M2.0
M1.5
M2.0
+M2.0x4
and Description.
2. Ordering quantity of screws and resistors must be
multiple of 10 pes.
a feds a Se et sy aS, ee ee se et a
=
PBPNWN-HPHNHH HK KH
Parts order must contain Model Number, Part Number

EXPLODED VIEW
(Cabinet)
i
[41
2
2529
03100
147 21119 69600
Cabinet Jack
emxraracite |
14101119 69406
Caninet Tos Comp)
202 5 8220 14120
SLP 1418
141 23899 10100
Holder Mike
{
«
T! 3
0 BN —_
Waa?
Se
Re
A :
f
141 21519 27500
Grille Mike
141 2 4469 36500
Cushion
141 2 4469 34600
'| Cushion
141 22149 15300
Poa Bracket Cabinet
141 21619 77000
Button Pause
14121119 64902
Cabinet Front
141 2 7529 90200 ng 9 +PMS M2.0x4
Post Bottom ie
141 2 7529 90200
Post
Bottom
101
3
130200411
#PMS M2.0x4
741 2 1619 76900
Button Mike Sensor Bk
131 31302 00411
+PMS C SWM2.0x4
141 2 2449 37000
rasa Sheet
2 131 2 1302 00411
@*~ +PMS C SW M2.0x4
141 23229 31900
Plate
Shield
141
22449
37000
41
22443
370
1 . SS Sheet
Sheet
131 3 1302 00411
+PMS C SWM2.0x4
|
141 2.4729 00100 oF
Lug
1410 1119 74700
101 31302 00611 Cabinet Bottom Assy
+PMS M2.0x6
14124219 04001
M2,
=
127
3
1317
03018
Screw
M2.0x6
PC
+PMS-1
M1.7x3.0
141 24219 04001
Screw M2.0x6 z
14124219 04001 —~@
Screw M2.0x6 141 24219 04001
Screw M2.0x6
14121419 12801
Rating Plate
141 0 1339 09302
Lid Battery Assy
2G
/?

(Chassis Top)
EXPLODED VIEW (continuea)
147 24279 03000
Screw ¥2.0x2 _
»
147 0 7439 05600
Lever Eyect Assy
1417 24219 O300e
ao
¢ % = S
NS
°
ad
141 2 8539 31500
Spring Cassette
141 25719 07800
Spacer —®
141 28519 43000
fh Spg Lacker
ye
141 27419 52600 —. =
Lever Sefect
1013 2502 00811 _
“ 1073 1302 00411
CMS M2.0x8 ‘Se oMe Mobs
2 ¢
082 +
eB eB 141.2.4729 04000
Ge ts
4 2429 71810
: Play Head
1103
1102
00023
;
SRW M20 ;
141
2.4219
09000
ob
141
2.4219
03000
,
Screw
M2.0x2
>
141
23529
18101
Screw
M2,0x3
E ye Spacer Head a
141
2.8219
24800
14128519
47400
?
Guide
Tape
Spring
Head
141
25719
09000
141 24219 03000 & Spacer
| Y Screw M2.0x3
141 25719 07700
eo Spacer
1410 7419 20300
Crank Select Assy
nt
141 0 7439 06000 {
Lever Sensor Assy
141 2.8119 06000
Counter
141 25649 12800
Belt Counter
141 07319 17301
dase. Side ASY. 141 28519 75700
Spring Pinch Rolle.
oe
141
24219
03000
ering
Pi
r
Screw
M2.0x3
1723
1301
50082
|
E RingM1.5 eg
i
141 28139 04100
Bracket Counter
141 28549 06000
Spring Base Slide
Assy Pinch Roller
141 0 5419 01000 |
| 1
141 26219 17800
Spacer Pinch Rolier
147 03119 16103
Chassis Assy
ID
yi 2 2449 37100 wt i
eer dy 112.3 1302 00082
112 3 1302 00082 E Ring M2.0
E Ring M2.0 |
\
i
4
-$
141 0 5369 01100
141 0 5369 00701 Reel Plate Comp/
Rell Plate Assy

EXPLODED VIEW (continue)
(Chassis
Bottom)
wr
Ring
141 2 8519 63600
Spring Brake Sa?
141 2851950701 P
Spring Lever Play spo" 1123 1301 50082
a E RingM15
1123 1301 50082 «
E Ring MI )~
yr
14107419 19706
Lever F.F. Assy
=
oA
141 28519 33000
Spg Lever Lock Index
1123 1301 50082
ERingMi.s
14107419 19806
1472
palg,
23300
Lever
Rewind
Assy
Gear
F
1123
1301
50082
S E Ring M15
141 2.4619 00901 1123 1301 50082 os: 112.3 1301 50082
Tube Brake “€ hae E Ring M1.5 E Ring 41.5
y 1
% Cry tt,
141 27149 02700
|
Plate Brake
1410 7419 20200 i
Plate Lock Assy A
1123 130 sat 50082 —@
141 28519 74700
Lf Spring Brake
1123 13a! 50082
141 2 7439 13300
Lever Review
1013 130200411
ag PMS M2.0x4
4 2319 71860
Switch Leat
141 2851950701
Pa Spring Lever Play
4
as
14107419 19906
Lever Play Assy
112.3 1302 00082
ey E Ring M2.0
aa op
141 2.8519 12200
Spg Motor Lock
: 141 28519 77000
| Spring Plate Lock
141 07419 20106
Lever Stop Assy
141 28519 75100
i 1123 fot es
E RingM Spring Rec Lock | E RingM
141 28519 57300 we oe or [47 2 4539 08000
Spg Lever Stop. [slg s5e 31500 @~ washer
vi
141 0 7439 05701
Lever Lock Rec Assy
141 27419 52300
Lever Shut-off
141 2 4469 00500
Thruse Flywheel
14124219 11400
Screw M2.0x5.5
ig
CA. 141 2.4469 17200
Cushion
141 24219 04000
Screw M2.0x6 ~s
4
141 28459 02601
Plate Flywheel
141 2 4459 15900
Cushion Motor
141 27539 01700
Post
141 0 3789 01300
Bracket Motor Assy
141 0.5219 08100
1312 130200411 Pinwneeh A5%:
+PMS C SWM2.0x4
141 2 5649 10900
Belt Drive
4 5279 70904 141 2417901800
Motor
Nut
141 2 4469 17200
Cushion
141 25729 14100
Metal Capstan
141 2 4539 06900
Washer
141 2 2449 37600
Sheet
—3—
141 2.5649 10800
Belt Take-up
141 2.4539 24600 i
Washer
wr b'R? 1301 50082
@*— E Ring M15
| 141 0 7439 05800
Arm Pul Take-up Assy
141 24219 04000
of Screw M2.0x6
141 25719 07800
Spacer
141 0 5519 06200
‘dler Take-up Assy
147 28519 63600
ye Spring Brake
Ey
141 24219 03000
Ss Screw M2,0x3
4 2319 74750
oh tat Switch
141 24219 03000
Screw M2.0x3
UAC 141 2 4729 07000
Lug
141 23159 02400
| la | Bracket Handle

wal .
co sate tenner
Jl
HEADPHONES
JACK
VRI
VOLUME
CONTROL
VR2
BALANCE
CONTROL
S4
TALK SWITCH
ON
OFF
re
fal S3
TONE SWITCH
HIGH== LOW
PARTS LOCATION
J2
EXT, POWER JACK
VR3
PITCH
CONTROL
FQ—

WIRING DIAGRAM
J2
BATTERY
EXT.
POWER
JACK
RED
.
RED
AA”
Cell
X
4
|
.
6YV
<a
:
7
mn
=
.
ate
an
x
7
i
GREEN
pe
a
‘SI
.
POWER
SWITCH
-
C
Lo
a
JI
AF
=
HEADPHONES
Pi]
JACK
ORANGE
ve
ORANGE
VRI
VOLUME
CONTROL
BLUE
—s
2 nme lg
ie
MIKE
|
MUTE
SWITCH
VR2
BALANCE
CONTROL
HDI
PLAY HEAD
¥ a Ss
okey WHITE |e
“GRAY
i ae
TONE SWITCH
LOW—*+= HIGH
PITCH
OPEARATION
BLUE
BLUE
CONTROL
INDICATOR
;
—11—
| :
9.

SCHEMATIC DIAGRAM
ic30i LASIGOT aiore201 2SC536 icior,ic2zo1 LA4I40
PRE- AMPLIFIER TONE SWITCHING CIRCUIT POWER AMPLIFIER
teh R320
BUILT
-
IN
MIKE
oy
ied
aay
5.7BV
6.0V
WA ——\W—— —\y—————~
C305 +] c307 R321 +] c308 R322 tpC309 +0310
0,0039y
—|
!O00yp
390
~f
220p
82
~f470p
—f
470
Lhe 2S + 10V 1 10V Lisgv 1 ev
$2
MUTING poh
SWITCH $3 clo RIO R12 Jt
TONE (2 HEADPHONES JACK
oY Vv,
HDI-!
PLAYBACK HEAD
22p 6,3V
LOWLo o HIGH clog or _ ce cil2
3301001
5.67V
IOV
arias
C106
0068p
1Opt6Vv 220
WA
Be RIOF VRI-I
12k 7.
. A-20K
VOLUME
CONTROL
C205
JOpI6V
HDI-2 ae
PLAYBACK HEAD t ~ + 1.3V
= Se
a t C202 |
7 !
C201 pia ahha
= =820P
a307 2SA608
INDICATOR CIRCUIT
No. Name Position
S11 Power Switch OFF
S2_ | Muting Switch OFF
S32 | Tone Switch HIGH
S4_ | Talk Switch OFF
VRI-2 sae
|
=
SBOaH CHOKE oop S|
2
5
JH
POWER
Pees
SON.
L73V
5.9V
PH
nets
Cane
7
2304
Q30!
*To3
CHOKE
re
ta DS448 -¥#320p
anor
OV
FLYWHEEL
+
O30
:
Liov
EXT.
POWER
JACK
DIODE
+
"AA Cell x4 Ty
e
6V LL
0302
R318 SLP-I41B — j.2y| Q305 -
3.3K
OPEARATION
me
°
L L 1 INDICATOR
Q306
Q306 ,Q305 2$C536 aQ304 2SAGOB Q303,9302 2$C536 930:2SB598
MOTOR GOVERNOR CIRCUIT
+B-8K
PITCH CONTROL
a (

IC & TRANSISTOR LEAD IDENTIFICATION
FRONT
VIEW
BOTTOM
VIEW
|
TRANSISTOR
FRONT
VIEW
(Oe
2S8C536
LA4140
oe
ae
ee
BOTTOM
VIEW
2SC536
FRONT
VIEW
2SA608
2SB598
fo oo o-}
B= BASE Bade ets
C= COLLECTOR
E> EMITTER BOTTOM VIEW
LA3160T BLOCK DIAGRAM
Pre-Amp.
IN NF OUT Vec GND OUT NF iN
Negative Negative
Feedback Feedback
—15—

SANYO ELECTRIC TRADING CO., LTD.
OSAKA, JAPAN
March/'81/7,000 Printed in Japan