w
I FILE NO.
I
Service Manual
MEMO-SCRIBER
TRC-7600 (XE)
Dictating / Transcribing
System
(NZ)
(UK)
,
m
I=iia F=ila Fila
I
~
= Specifications
Recording system . . . . . . . . . .
AC bias
Erase system . . . . . . . . . . . . . . DC erase
Fast forward . . . . . . . . . . . . . . . 420 sec. (MC-40N)
Rewind time . . . . . . . . . . . . . . . 150 sec. (MC-40N)
Wow and flutter . . . . . . . . . . . . 1.0 % RMS
Frequency response . . . . . . . . . 250 Hz -6,000
tiz
PRODUCT CODE No.
142 606 02(XE)
142 606 03(NZ)
142 606 04( UK)
Output power . . . . . . . 1000 mW (MAX.)
Loudspeaker . . . . . . . 77 mm(D) 8 ohms
Dimensions . . . . . . . .
240(W) x 186(D) x 53(H)mm
Weight . . . . . . . . . . . . 1.2kg
DC input . . . . . . . . . . . DC9V
Specifications subject to change without notice.
.V
REFERENCE No. SM580483
MECHANISM ADJUSTMENTS
a.
●
●
●
b.
●
●
●
●
●
●
c.
(1)
(2)
(3)
GENERAL REMARKS
w
Before adjusting the mechanism of this unit, wipe the tape contacting surfaces clean as well the contacting surfaces of the
driving parts except the Drive Belt with a cotton swab 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.
Silicone grease is applied to the Drive Belt to proper amount of silicone grease to the groove of the motor pulley.
REQUIRED EQUIPMENTS
Thickness Gauge
Torque Gauge
N-Hexane or Benzine
Silicone Grease (Example : TORAY SILICONE SH-33L)
Hand Control
Mini-cassette Tape (Example : SANYO MC-40N)
REWIND SOLENOID ADJUSTMENT
Fully insert the Plunger into the Rewind Solenoid and check
to see that the clearance between the Rewind Plate Lever
and the Slider is 0.3 - 0.7mm as illustrated.
If not, loosen the two screws fastening the Rewind Solenoid
and adjust the clearance by slowly moving the Solenoid
while inserting the Plunger into the Solenoid as illustrated.
After the adjustment, tighten the fastening screws and
secure them with paint or glue.
d. PLAY SOLENOID ADJUSTMENT
(1)
(2)
(3)
(4)
(5)
Fully insert the Plunger into the Play Solenoid and check to
see that the clearance between the Play Plate Lever and the
Slider is 0.3-
0.7mm as illustrated.
If not, loosen the two screws fastening the Play Solenoid
and adjust the clearance by slowly moving the Solenoid
while fully inserting the Plunger into the Solenoid as
illustrated.
After the adjustment, tighten the fastening screws and
secure them with paint or glue.
Check to see that the clearance between the Capstan and
the Take-up Reel is 0.5- 0.8mm as illustrated.
If necessary, adjust the clearance by bending the Flywheel
Base as illustrated.
Take-up Reel
a
@
@
0.5 – 0.8mm
~Capstan
Rewind
~chassis
screw%...]
$
moving the Solenoid
Solenoid ~
:
Screw
!
+
:...1
~--
●y=--=-ek::
Plunger
4
R 0.3 - 0.7mm
Rewind Plate Lever
+&
1
Slider
chassisll—
.-----.x _.-.
@
L’-
Play Solenoid
Screw
- :
mo;ing the Solenoid
,.., &screw
‘‘--&> :==.:*--J
4 2 =
Plunger
w
&
0.3- 0.7mm
Play Plate Lever
Slider
a
bend~ .
Flywheel Base
%4’
-1-
MECHANISM ADJUSTMENTS
e.
TAKE-UP TORQUE ADJUSTMENT
-
M
Torque Gauge
. Before this adjustment, wipe the capstan and Take-up
Take-up Torque
Reel clean with N-Hexance or benzine.
M
70-
150g-cm
(1) Plug the Hand Control into itsreceptacle onthe rearof
II
(2)
(3)
the unit and set the unit in the playback mode by
Play PIate Lever
pushing and sliding the START switch on the Hand
4
1’
Control to the lock position.
Measure the take-up torque of the Take-up Reel with the
torque gauge as illustrated.
The take-up torque should be 70- 150g-cm.
If not, adjust the take-up torque by bending the Play
Plate Lever as illustrated.
L
When the Plunger is fully inserted into the Play Solenoid, the clearance
between the Brake and Take-up Reel should be 0.3- 0.7mm as illustrated.
If necessary, adjust the clearance by bending the Brake Arm as illustrated.
f. BRAKE ADJUSTMENT
Take-up Reel
n
--l :::
(1)
(2)
~ Brake Arm
/
I
/’
,’
[
‘..
‘.
g. FLYWHEEL THRUST ADJUSTMENT
(1)
(2)
●
●
(3)
Each clearance between the Flywheel and the Flywheel Support
the oil cut washer and the Capstan Holder should be 0.4-
0.6mm with the unit in an upright position as illustrated.
If necessary, adjust the clearances as follows:
To obtain the clearance of O between the Flywheel and the
Flywheel Support, slowly turn the Flywheel Thrust
counterclockwise.
Then fully push the oil cut washer down as illustrated.
Turn the Flywheel Thrust clockwise until the clearance between
the Flywheel and Flywheel Support becomes 0.5 ~ 0.1 mm when
measured by the thickness gauge as illustrated.
After the adjustment, secure the Thrust with paint or glue.
h. CASSETTE SWITCH ADJUSTMENT
0.3
Oil cut washer
04–06mm
1
++
/--Wh*l
Flywheel Thrust ~
~ Flywheel Support
+.
Flywheal Thrust
Flywhaal Support
●
This switch is normally opened and used to detect whether the mini-
cassette tape is inserted into the cassette compartment or not.
I
I
(1)
(2)
(3)
w’
Check to see that the Cassette Switch is bend by 1.3- 1.5mm as
(
Cassette
)
after the switch contacts have been closed by inserting the mini-
1.3 – 1.5mm
cassette tape into the Cassette Holder.
If not, loosen the screw fastening the switch and move the Switch
as illustrated to adjust its position correctly.
After the adjustment, tighten the fastening screw and secure it with
paint or glue.
Cassette Switch
-2-
TAPE ADJUSTMENTS
Measuring instructions, tools
(1)
(2)
(3)
(4)
(5)
AF VT~M
(6) TEST TAPE, HEAD AZIMUTH
(7)
FREQUENCY COUNTER
. Using tape : Mini-cassette tape of
●
OSCILLOSCOPE
18~thick(A-BEX SSC-1584, etc.)
DC POWER SUPPLY : 3.OV
● Recording signal :4 kHz
●
DUMMY LOAD, 4 ohms
● Recording Lebel :-10 dB
● Recording Tape speed :4.75 cm / sec. ●
●
●
a. HEAD REPLACEMENT AND AZIMUTH ADJUSTMENT
(a) Head Replacement
%
TEST TAPE, MOTOR SPEED
Using tape : Mini-cassette tape of
18 ~ thick (A-BEX SSC-1582, etc.)
Frequency of Recorded Linear Sweep
Signal :4,575-3,925 Hz
Recording Lebel :-10 dB
Recording Time :84.5 sec.
Recording Tape speed :4.75 cm I sec.
● After replacement, demagnetize the heads by using a
~~
E. HEAD
REC/ PLAY HEAD
head eraser.
● Be sure to clean the heads before attempting to make
+? S
any adjustment.
8
Pe
??
A
(b) Head Azimuth Adjustment
(1) Load the test tape (A-BEX SSC-1 584, etc.) for azimuth
adjustment.
(2) Press the PLAY button.
(3) Use a cross-tip screwdriver to turn the screw for
azimuth adjustment so that the outputs maximized.
(4) After completion of the adjustment, use thread lock
(TB-1 401 B) to secure the azimuth-adjustment screw.
b. MOTOR SPEED ADJUSTMENT
(1) Insert the test tape (A-BEX SSC-1 582, etc.).
(2) Press the PLAY button.
(3) Use a cross-tip screwdriver to turn the P501 to adjust
so that the frequency counter becomes 3,000 Hz.
c. CHECKING THE MECHANISM TORQUES
(1) Play mode . . . . . . . . more than 40 g-cm
(2) Fast Forward mode . more than 45 g-cm
(3) Rewind mode . . . . . more than 40 g-cm
WE
HEAD AZI MUTlj ADJUSTMENT .
MOTOR SPEED ADJUSTMENT
-3-
w
EXPLODED VIEW (CABINET & CHASSIS)
-51
-18
-Y5
-4-
PARTS LIST
PRODUCT SAFETY NOTICE
Each precaution in this manual should be followed during servicing. Components identified with the IEC symbol ~ in the parts list
and the schemptlc diagram designate components in which
safety can be of special significance. When replacing a component
identified ~, use only the replacement parts designated, or parts with the same ratings of resistance, wattage or voltage that are
designated in the parts
list in this manual. Leakage-current or resistance measurements must be made to determine that exposed
parts are acceptably Insulated from the supply circuit before returning the product to the customer.
CAUTION :
Regular type resistors and capacitors are not listed. To know those values, refer to the schematic diagram.
Regular type resistors are less than l/4W carbon type and O
ohm chip resistors.
Regular type capacitors are less than 50V and less than 10OOpF type of Ceramic type and Electrical type.
N.S.P :
Not available as service parts.
PACKING & ACCESSORIES
Ref. No.
Part No.
620 147 2691
620 147 3032
620 148 1600
620 148 1617
620 148 5202
614 269 0109
614 269 0116
614 269 0123
620 004 0488
645 002 8953
620 004 0594
620 080 8910
645 009 6419
~620 206 7551
~645 003 3933
~645 002 8700
614 269 0239
614 269 0246
614 269 0253
:ABINET& CHASSIS
Ref. No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Part No.
614 268 9417
614 268 9592
620 137 8023
614 268 9578
620 109 1502
620 109 1496
620 110 5728
620 110 5766
620 110 5742
620 110 5735
620 110 5759
620 110 5711
620 110 5704
620 115 3774
620 115 3767
620 118 8011
620 105 4224
620 120 7682
620 125 8103
620 124 6926
620 213 7490
620 213 7506
‘IXING PARTS
E
Description
TUBE ACCESSORY
80X ACCESSORY
PAD LEFT
PAD RIGHT
POLY COVER,80X180
CARTON CASE (XE)
CARTON CASE (NZ)
CARTON CASE (UK)
HAND CONTROL
REMOCON,FOOT CONTROL (XE)
FOOT CONTROL COMP (NZ,UK)
HOLDER HANDSET ASSY
HEADPHONE,8
ADAPTOR,AC-DC (XE)
AOAPTOR,AC-DC (NZ)
ADAPTOR,AC-DC (UK)
INSTRUCTION MANUAL (XE)
INSTRUCTION MANUAL (NZ)
INSTRUCTION MANUAL (UK)
Description
ASSY,CABINET
ASSY,LID,CASSETTE
SPRING LID CASSETTE
ASSY,CABINET,BOTTOM
KNOB VOLUME
PLATE KNOB VOLUME
BUTTON ERASE
BUTTON PLAY
BUTTON FF
BUTTON REW
BUTTON STOP
BUTTON SELECT
BUTTON POWER
BRACKET BUTTON PLAY
BRACKET BUTTON POWER
HOOK HOLDER HAND SET
PLATE JACK
BRACKET FIX SPEAKER
LUG
CUSHION
SHEET
SHEET
Description
SCR TPG PAN 3X16,BOTTOM
SCR PAN 3X8
SCR PAN 2.6X6,AMP PWB
Ref. No.
Part No. Description
Y4
411 003 8809 SCR PAN+SW 2.6X6,AMP PWB
Y5 411 007 4500 SCR TPG PAN 3X8,SPEAKER
Y6
411 146 9404 SCR TPG PAN 2.6X8,MECHANISM
Y7 411 002 4901 SCR PAN 2X4,1NOICATOR PWB
Y8 411 002 4901 SCR PAN 2X4,ERASE PWB
Y9 411 072 6706 SCR TPG PAN 2.6X8,BRACKET
Ylo
411 033 9708 SCR FLT 2.6X6,HOOK HOLDER
1 1
ELECTRICAL PARTS
Ref. No. Part No.
Description
51 645 009 6686 SPEAKER,4
52 620 018 8845 2P SOCKET
53 620 020 6037 CONNECTOR 4P ASSY
4MPLIFI
Ref. No.
71
cool
CO02
CO03
C012
C017
C019
C025
C029
C030
C032
C033
C035
C046
C048
C059
CN1
CN2
CN3
DOO1
or
DO02
or
DO03
or
DO04
or
DO06
or
DO07
or
0008
or
? P.W.BOARDI
Part No.
620 077 8831
620 125 7656
620 125 7663
403 060 8106
403 059 5802
403 057 0304
403 060 2005
403 060 6003
403 094 5607
403 090 9005
620 006 6334
620 006 6334
403 043 3104
620 006 6334
403 081 0707
620 006 6334
620 006 6334
620 006 6464
620 021 8436
620 021 8597
614 236 5847
407 007 9904
407 061 2309
407 007 9904
407 061 2309
407 007 9904
407 061 2309
407 007 9904
407 061 2309
407 007 9904
407 061 2309
407 007 9904
407 061 2309
407 007 9904
407 061 2309
5SY
Description
ASSY,PWB,AMP
CAP POWER SWITCH
CAP SWITCH
POLYESTER 0.033U J
50V
POLYESTER 0.022U J
50V
POLYESTER O.OIU J 50V
POLYESTER 0.027U J
50V
POLYESTER 3300P J
50V
OS-SOLID
0.22U M
25V
TA-SOLID
0.047U M
16V
CAPACITOR CI 02 12 Z
CAPACITOR CI 02 12 Z
ELECT
2200U M
16V
CAPACITOR CI 02 12 Z
POLYPRO
1800P J 100V
CAPACITOR CI 02 12 Z
CAPACITOR CI 02 12 Z
CAPACITOR 470M
10V
PLUG 6P
PLUG 4P
PLUG 2P
DIODE GMAO1
DIODE 1SS95
DIODE GMAO1
DIODE 1SS95
DIODE GMAO1
DIODE 1SS95
DIODE GMAO1
DIODE 1SS95
DIODE GMAO1
DIODE 1SS95
DIODE GMAO1
DIODE 1SS95
DIODE GMAO1
DIODE 1SS95
-5-
PARTS LIST
Ref. No.
Part No. Description
)009
407 007 9904 DIODE GMAO1
jr 407 061 2309 DIODE 1SS95
)010
407 007 9904 OIODE GMAOI
>r 407 061 2309 DIODE 1SS95
1o11 407 007 9904 DIODE GMAO1
)r 407 061 2309 DIODE 1SS95
)012
407 005 3805 DIODE DS442
)013 407 007 9904 DIODE GMAO1
jr 407 061 2309 DIODE 1SS95
)014 407 007 9904 DIODE GMAO1
>r 407 061 2309 DIODE 1SS95
)015
407 007 9904 DIODE GMAO1
)r 407 061 2309 OIODE 1SS95
1016
407 005 3805 DIODE DS442
1017 407 007 9904 DIODE GMAO1
>r 407 061 2309 DIODE 1SS95
1018 407 007 9904 DIODE GMAO1
>r 407 061 2309 DIODE 1SS95
)019
407 005 3805 DIODE DS442
)022 407 050 5502 ZENER DIODE GZA5.6Y
)023
407 050 6608 ZENER DIODE GZA6.8Y
)025
407 007 9904 DIODE GMAO1
or
407 061 2309 DIOOE 1SS95
)501 407 050 6905 ZENER DIODE GZA7.5Y
ICO1 409 069 4200 IC M51121P
IC02 409 071 7602 IC TBA820M
IC03 409 025 5005 IC LM6416E-1850
IC04 409 057 3000 IC UPC358C
IC05 409 002 9309 IC BA6104
IC501 409 018 2202 IC LA5522
P501
620 005 6205 POTENTIOMETER 201
Pcol 407 076 9706 Pc NJL5141E-A-GR
or 407 164 1001 PHOTO COUPLE GP2S22-A
2001
405 019 1909 TR 2SC536-E-NP
o’r 405 019 2708
TR 2SC536-F-NP
QO02 405 019 1909 TR 2SC536-E-NP
or 405 019 2708 TR 2SC536-F-NP
0003
405 019 1909 TR 2SC536-E-NP
or
405 019 2708 TR 2SC536-F-NP
0004 405 019 1909
TR 2SC536-E-NP
or 405 019 2708
TR 2SC536-F-NP
QO05 405 019 1909
TR 2SC536-E-NP
or 405 019 2708 TR 2SC536-F-NP
QO06 405 019 1909 TR 2SC536-E-NP
or 405 019 2708 TR 2SC536-F-NP
QO07
405 019 1909 TR 2SC536-E-NP
or 405 019 2708 TR 2SC536-F-NP
QO08
405 004 4502
TR 2SA608-F-NP
QO09
405 004 4502
TR 2SA608-F-NP
QO1O 405 019 1909
TR 2SC536-E-NP
or 405 019 2708 TR 2SC536-F-NP
QO1l 405 019 1909 TR 2SC536-E-NP
405 019 2708 TR 2SC536-F-NP
;;12
405 019 1909 TR 2SC536-E-NP
405 019 2708 TR 2SC536-F-NP
::13 405 024 0102
TR 2SD545-E-NP
405 024 0409
TR 2SD545-F-NP
;;14 405 019 1909 TR 2SC536-E-NP
405 019 2708
TR 2SC536-F-NP
;;15
405 004 4502
TR 2SA608-F-NP
Q016
405 019 1909
TR 2SC536-E-NP
405 019 2708
TR 2SC536-F-NP
:;17
405 024 0102
TR 2SD545-E-NP
405 024 0409
TR 2SD545-F-NP
;;18
405 004 4502 TR 2SA608-F-NP
Ref. No.
Q019
or
Q020
or
Q021
or
Q022
Q023
Q024
or
Q025
Q026
or
Q027
or
Q028
or
Q029
Q030
;;31
Q032
Q033
Q501
;;02
:;03
Q504
Q505
Q506
Q507
;;08
;:10
or
R506
R520
RAO 1
RA02
Sool
SO02
SO03
TOO1
VRO1
VR02
VR03
VR501
Part No.
405 019 1909
405 019 2708
405 024 0102
405 024 0409
405 019 1909
405 019 2708
405 019 2708
405 019 2708
405 019 1909
405 019 2708
405 004 4502
405 019 1909
405 019 2708
405 019 1909
405 019 2708
405 019 1909
405 019 2708
405 019 2708
405 019 1909
405 019 2708
405 021 0204
405 021 0204
405 008 6809
405 019 1909
405 019 2708
405 019 1909
405 019 2708
405 008 6809
405 008 6809
405 004 4502
405 021 0204
405 032 2808
405 008 3808
405 019 1909
405 019 2708
405 024 0102
405 024 0409
620 004 3854
401 058 1207
620 004 5193
620 004 5193
620 016 7956
620 016 7963
620 016 7949
620 028 7234
620 006 1254
620 006 1254
620 006 1261
620 006 1278
Description
TR 2SC536-E-NP
TR 2SC536-F-NP
TR 2SD545-E-NP
TR 2SD545-F-NP
TR 2SC536-E-NP
TR 2SC536-F-NP
TR 2SC536-F-NP
TR 2SC536-F-NP
TR 2SC536-E-NP
TR 2SC536-F-NP
TR 2SA608-F-NP
TR 2SC536-E-NP
TR 2SC536-F-NP
TR 2SC536-E-NP
TR 2SC536-F-NP
TR 2SC536-E-NP
TR 2SC536-F-NP
TR 2SC536-F-NP
TR 2SC536-E-NP
TR 2SC536-F-NP
TR 2SO1O12-F-SPA
TR 2SD1012-F-SPA
TR 2SB808-F-SPA
TR 2SC536-E-NP
TR 2SC536-F-NP
TR 2SC536-E-NP
TR 2SC536-F-NP
TR 2SB808-F-SPA
TR 2SB808-F-SPA
TR 2SA608-F-NP
TR 2SD1012-F-SPA
TR 2SB738-C
TR 2SB739-C
TR 2SC536-E-NP
TR 2SC536-F-NP
TR 2SD545-E-NP
TR 2SD545-F-NP
LT RESISTOR 10K
OXIDE-MT
10 JB
RESISTOR 22K-4 J
RESISTOR 22K-4 J
PUSH SW 5 KEY
PUSH SW 4 KEY
POWER SW
OSC TRANS
SLIDE VR 10KAX1
SLIDE VR 10KAX1
SLIDE VR 10KBX1
SLIDE VR 10KBX1
lW
NDICATOR P.W.BOARD ASSY
Ref. No.
72
DO05
D020
D021
Part No.
620 077 9548
407 027 6907
407 030 5003
407 027 6907
:RASE LED P.W.BOARDASSY
Ref. No.
Part No.
Description
73 620 077 9562
ASSY,PWB,ERASE LED
D026 407 027 6907
LED SLP-153B
-6-
EXPLODED VIEW (TAPE MECHANISM)
@
–22
24*
,?
–23
‘fjy, \\
\
=--d
A468
1 - I “&iol
1p
81–&
1:AJ102
I . I II Z mi
1-’-’-’
94
&
l-=
‘- \
e~p
—
96–-G
98–4
@
\
–89
–90
>.. -
./
‘d
-7-
PARTS LIST
TAPE MECHANISM (TM-1
*
Ref. No.
1
~
3
0
i
;
7
3
3
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
3’5
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
51
52
63
64
65
Part No.
620 135 5956
620 118
411 066
620 015
411 002
620 029
620 132
620 084
620 137
620 131
620 139
411 015
620 110
620 085
620 082
411 066
620 122
411 015
620 136
620 081
620 124
620 082
620 082
620 125
411 015
620 132
411 016
620 083
620 125
411 038
620 134
620 124
620 137
620 082
620 085
411 039
620 132
620 136
620 125
411 016
620 135
620 082
411 066
620 137
620 122
620 082
620 124
620 127
411 016
620 082
411 066
620 023
411 002
411 035
620 132
620 137
620 023
620 082
411 002
614 206
620 132
620 085
620 134
411 002
411 041
7267
5302
9937
4901
2696
9476
6424
3394
4311
2593
7609
5698
1749
0103
5302
6713
7609
9212
5543
0542
8062
8055
1067
7609
1210
0203
7019
1197
6801
0068
0771
3295
0141
1701
3304
9315
1599
1708
0203
9619
0134
5302
3219
6713
0301
1259
3953
0203
0127
5302
6119
4901
6804
9308
0294
3996
0110
5908
7406
1180
1688
0136
4901
3309
360-SH)
Description
:OUNTER
3RACKET SWITCH
SCR TPG PAN 2X4
LEAF SWITCH
SCR PAN 2X4
PLUNGER
PIN
LEVER PL PLAY ASSY
SPRING RETURN
SLIDER
SPRING LEVER PLAY
RING E 1,5
BUTTON EJECT
ARM EJECT ASSY
BRACKET,EJECT ASSY
SCR TPG PAN 2X4
EYELET
RING E 1.5
SPG MARKER
CHASSIS ASSY
CUSHION
REEL,TAKE UP ASSY
REEL,SUPPLY ASSY
WASHER
RING E 1.5
ARM RELEASE SPRING
RING E 2.5
BRAKE ASSY
WASHER
SCR PAN 2X1O
SPACER CUSHION
CUSHION
SPRING BRAKE
BRACKET,BRAKE ASSY
BASE FLYWHEEL ASSY
SCR PAN 2X7
PIVOT FLYWHEEL
BALL
WASHER
RING E 2.5
HOLDER BEARING
BRACKET,CASSETTE ASSY
SCR TPG PAN 2X4
SPRING EJECT
EYELET
HOLDER,CASSETTE ASSY
CUSHION
GEAR DAMPER
RING E 2.5
BRACKET,CASSETTE ASSY
SCR TPG PAN 2X4
R/P HEAD
SCR PAN 2X4
SCR CYL 2X4
SPACER HEAD
SPRING AZIMUTH
ERASE HEAD
BASE HEAD ASSY
SCR PAN 2.6X4
LUG
~RM BRAKE
LEVER IDLER ASSY
SPACER LINK
SCR PAN 2X4
SCR PAN 3X3
Ref. No.
i6
i7
58
59
10
11
72
13
74
15
?6
77
18
19
30
31
32
33
34
35
36
37
38
39
30
91
32
33
94
35
96
27
98
99
100
101
102
103
104
105
106
Part No.
620 029 2702
620 077 9531
411 041 3309
620 139 2609
620 084 6417
411 015 7609
620 136 9212
620 118 7472
620 083 1529
411 100 4902
411 038 7501
411 066 5302
620 085 6287
411 066 5302
620 132 1159
411 015 7609
620 030 3149
620 121 5953
411 006 5003
620 124 0870
620 124 0979
620 119 5767
411 039 1508
620 128 5567
620 082 5832
620 118 7199
620 124 3741
411 002 4901
620 083 2441
620 128 5031
620 125 0954
620 082 8079
411 015 7609
620 127 8767
620 125 1067
411 015 7609
620 127 3885
620 085 1695
620 085 1718
411 015 7609
411 002 7803
Description
PLUNGER
CONNECTOR,PWB ASSY
SCR PAN 3X3
SPRING PLUNGER
LEVER PL REWIND ASSY
RING E 1.5
SPG MARKER
BRACKET DAMPER
GEAR,EJECT ASSY
WASHER V 2X6X0.4
SCR PAN 2X12
SCR TPG PAN 2X4
SPRING CASSETTE ASSY
SCR TPG PAN 2X4
ARM BRAKE
RING E 1.5
MOTOR
BRACKET MOTOR
SCR TPG PAN 2.6X5
CUSHION
CUSHION MOTOR
SPACER
SCR PAN 2X5
BELT FLYWHEEL
FLYWHEEL ASSY
SUPPORT FLYWHEEL
THRUST FLYWHEEL
SCR PAN 2X4
PULLEY SENSOR ASSY
BELT COUNTER
WASHER
TORQUE LIMITER ASSY
RING E 1.5
PULLEY COUNTER
WASHER
RING E 1.5
IDLER
ARM IDLER ASSY
LEVER PLAY ASSY
RING E 1.5
SCR PAN 3X4
-8-
CIRCUIT DESCRIPTION
a. POWER SUPPLY
.
When the POWER switch is turned on, all circuits are sup-
plied with voltage from the AC Adapter.
The circuits supplied with voltage are of three types : cir-
cuits supplied directly with a voltage of + 9V, circuits sup-
plied with a constant-voltage of + 5V, and circuits supplied
with a constant-voltage of + 7V.
1., The circuits supplied directly with a voltage of + 9V
(1) Audio amplifier (ICI and IC2)
(2) Play Drive and Rewind Drive circuits
(3) Backspace circuits
(4) Erase Head Drive circuits
(5) TEL. Record / Dictate circuit
2. The circuits supplied with a constant-voltage of + 5V
(1) MPU (Microprocessor unit) lC3
(2) Cue Tone Signal Record circuit
(2) Cue Tone Signal Detect circuit
(3) Rotation Detection circuit
3. The circuits supplied with a constant-voltage of + 7V
(1) Motor Governor circuit
b.
●
●
●
c.
●
●
●
PLAYBACK CIRCUIT
When the PLAY button is pushed, pinl (PDO) of IC3 goes
to low, as does pin9 of IC3. This activates the Play Drive
Circuit composed ofQ12, Q13 and the Play Solenoid (SL1 ).
A signal from the tape is played back according to the fol-
lowing process :
Record / Play Head (HD1-1 ) + Pre-amplifier (IC1 pin6 +
IC1 pin3) + Tone Control (VR1 ) + Volume Control (VR2)
+ Power Amplifier (IC2 pin3 + IC2 pin5) + Earphone
Jack (J3) + Mic. / Speaker Switch (S2-2) + Speaker (SP1 )
When playing back (including fast forward and rewind),
the voltage will not be supplied to pin9 of the Pre /
Record Amplifier (IC1 ).
Also, the muting transistor Q4 goes off. Moreover, the
OSC transformer (Tl ) is carried out muting through Q31,
Q32 and Q33.
RECORDING
CIRCUIT
A signal from either the Microphone (Hand Control) or
TEL. Record Jack (J2) is recorded on the tape according
to the following process.
Pre / record Amplifier (IC1 pin9 + IC1 pin7) + Record /
Play Head (HD1-1)
A voltage of approximately 3.2V is supplied to pin9 of the
Pre / record Amplifier (iCl) at this time, and IC1 will be
changed to the recording
mode. Then pin16 of IC3 goes
to high (approx. 1.3V), Q13 turns on, and the Record Sig-
nal from ICI pin3 is muted and howling prevented.
When recording, Q9 turns on and voltage is supplied to
and activates the Bias Circuit composed of Q6 and
T1.
At the same time, Q31 and Q32 go off when Q33 goes off
and then the OSC transformer (T1 ) muting is eliminated.
d.
●
●
e.
●
●
●
●
f.
●
CUE TONE SIGNAL RECORD CIRCUIT
w
The Cue Tone Signal transmits for approximately 1.6 sec.
emitting about 130Hz rectangular wave from pinl 8 (PF3)
of IC3. This signal passes through a filter composed of
R109, C50, R107, C57, RI 04, R103 and C55, is boosted
at Q23 and Q22, and is recorded onto the tape from the
Search track of the Record/ Play Head (HD1 -2).
While the Cue Signal Tone is being emitted (approx. 1.6
sec.), pin19 of IC3 goes to high (approx. 3.5V) and Q29
and Q5 turn on. The Cue Tone Signal is recorded onto
the tape because Q29 is on, and the circuit for the voice
recording is muted because Q5 is on.
CUE TONE DETECTION CIRCUIT
This circuit operates only during fast forward and rewind.
The Cue Tone Signal recorded on the tape is played back
according to the following process :
Record / Play Head (Search Track HD1 -2) + Cue Tone
4
Detection Circuit (IC4 pin2 + IC4 pin7) + Q24 + Q26 +
Q27 + Q28 + IC3 pin27 (PC2).
During fast forward the input Cue Tone Signal goes to ap-
proximately 400 Hz. This signal is boosted at IC4 and
when over Q28 turns on by means of Q24, Q26 and Q27.
When Q28 turns on, pin27 of IC3 (PC2) goes to low, and
the signal is picked up by the MPU (IC3) as the Cue Tone
Signal. Pin9 (PEO) of IC3 goes to high (approx. 1.2V) for
approximately 2 seconds, releasing the Play Solenoid. At
the same time, pinl 5 (PFO) of IC3 goes to high (approx.
2V) and the Motor (Ml) drops from high speed to normal
rotation.
During rewind the input Cue Tone Signal goes to approxi-
mately 650 - 2200 Hz. This signal is boosted at IC4 and
when over Q28 turns on by means of Q24, Q26 and Q27.
When Q28 turns on, pin27 of IC3 (PC2) goes to low, and
the signal is picked up by the MPU (IC3) as the Cue Tone
-
Signal. Pinl 2 (PE3) of IC3 goes to high (approx. 1.2V),
releasing the Play Solenoid (SL1 ).
ALARM SIGNAL
The Alarm Signal is a 650Hz rectangular wave emitted
from pin17 (PF2) of IC3. This signal passes R27, C25,
R26 and R25 and enters pin 3 of the Power Amplifier IC2,
where is boosted and emitted from the speaker as an
alarm signal.
There are 4 types of alarm signals :
(1) No Cassette Alarm ., . . . . . . sounds continuously
(2) ASOAlarm . . . . . . . . . . . . . . . . . . . approx.4 sec.
(3) Cue Tone Record Alarm . . . . . . . approx. 1.6 sec.
(4) Cue Tone Signal Detection Alarm . . approx. 2 sec.
-9-
CIRCUIT DESCRIPTION
e.
*
●
●
f.
●
BACKSPACE CONTROL CIRCUIT
When pin9 (PEO) of IC3 goes to low, the Play Solenoid
(SL1 ) functions. At the same time, Q19 turns on, as does
Q18. When Q18 turns on, voltage corresponding to the
position of the Backspace Control (VR3) is supplied to
C42.
When the Foot Control Play Button is released, pin9
(PEO) of IC3 goes to high (approx. 1.2V) and the Play So-
lenoid (SL1 ) is released. At the same time, pinl 1 (PE2)
of IC3 goes to low and Q15 turns on. As a result, Q14
turns on as long as the voltage at C42 is discharged, dur-
ing which time the Rewind Solenoid (SL2) operates.
REMOTE CONTROL CIRCUIT
By pressing the Hand Control or Foot Control switch, the
input voltage at pin8 of IC5 and the voltages at pinsl, 2,
3, 4 and 6 of IC5 become as shown in the following chart.
b
Function
Pin 8 Pin 6 Pin 4 Pin 3 Pin 2 Pin 1
No operation 1300 mV H H
H
H
H
Start lPlay 900 mV L H H H H
Backspace 700 mV L
L H H H
Cue 500 mV L
L L H H
Dictate 300 mV L L L L H
Back
Ov
L L L
L
L
● PJplJ (IC3) picks Up the output from IC5 and the voltages
at pinsl, 2, 3, 4 and 6 and performs the appropriate
operation (i.e., Start/Play, Backspace, Cue Tone Production,
Dictate and Playback).
-1o-
—m
.. . .. . .
t
I
a
a
I
I
nid hhnf I
.... ...
S2.3
Muting CirCllll
I
I
-$0
1. I Pr~/R,cordJ@ifi,r ~ ~ P,W@rAmPlifi~r I___W!Y’?f!! 1:
1
95
I
d
J2
TEL RecordJtck
HOI. I =
Flecord/Plq Htad [Audio]
-~
I
+w
Vlll
VR2
7 Tone
LA
~ VOlume
Control Control
RecordMuting
F.FWO/Rewind
Circuit .
MutingCircuit
03
~4
T*4 .“
IC2
v
.
SPI
?
Spe?ker
T2
8(1
.
Erase Head
+9V
—
EraseDritie
TELRecnrd/Oiclalt
Circuit
— Circuit
026
IJ7 lj8.Q9.rJlo.oll
IEracd
TEL.Fncnrd
S2.4.2
~~
Erase
rr5
(TEL Record]
4
2 FeemoteControl Jack
5
u
S11
Play
Solenoid
7’
PlayDrive
Circuit
fJ12,1J13
u
S12
Rewind
Saknoid
J
flemoveControl
Circuit
IC5. 921
P
tlewind Drive
Circuit
(l16,1J17
L
I-4 [:;a;d,p,,y”,ad,,earch,
~kks,dc,
CueTone flecord Circuit
v Conlrol
—
~23. 022,029
FlotationOeteclion
.
Circuit
1
I
IJLYLl
) CueToneDetectionCircuit f
~+.z”
g.,>
Search
Erase
I
-.!
F
020
[POwerl
.
S4 CassetteSwilch
~>
.
!34
VoltageIlequlalor
0510
J4 PowerJtck
w
.
*
ower
r
(
‘R
o
S2.I. I
‘?
021
Search
[Search]
.
d
‘--w~-
S243 TELRecord
VF1501
SpeedConlrd
k
o
.
d-r
r2. I
F.FWO
IC BLOCK DIAGRAM
ICI M51 121P (Pre Amplifier)
k
IC4 UPC358C (Cue Tone Detection)
GNO AIC OdW AIC AIC AMP Ilccord EIJ RecordEIJ VCC ri/P Switch
w
T
irtcard
Prt.AMP
r
1
,
~
w ~ w
pJ w
t
FiECIll Sk Aipplefl/P Pre.OUT Pl?y E~ Plq Gtin PLAYIN I
T
Switch
Switch
7
m
OUTGNO
Inverting Non.lnwrling
v+
OutoutE Innul B
klDUt 8
w
L@ A
Inpul A
Filler
Ad.
BA6104 (Remote Control)
+
Volhql Rqnl*
OWPUT
I OUTPUT2 OUTPUT3
OUTPUT4
CNO
OUTPUT5
Vm
INPIJT
Vcc
1C501 LA5522 (Motor Control)
, ,
I
~
i
~
pJ ~
~
vu our GMO VlcfOUTI
Vrd OUT2
SCHEMATIC DIAGRAM (ACCESSORIES
FOOT CONTROL
PARTS)
HAND CONTROL
BM301
BUILT-IN MIKE
T
13
.IE
t
S2
R::;
DICTATE
SWITCH
t
SI
R~$;
CUE
SWITCH
-12-
P% JACK
—
1
I
L--
2!?K
!-! .:,,~
2% ,8%N! %1
,
7
“’’cm”;
mrt-kru II ‘+”” * Iw
,;
n-nn 03”7 1
RAW
.,,,% ‘-” +--+;7-,
I
-**
$&h
This is a basic schematic diagram.
DIAGRAM
-
[
e
c-
J4
F%
JA(
—
—
II
1 1
-14-
IC & TRANSISTOR VOLTAGE
Icl
+
23
2.0
1.2
L
12113114115116
4
%-R-H-H
0.2
I TEL. REC. I 0.7 2.8 I 1.5
0.1
+
2.0
1.2
2.0
1.2
0.2
0 t 0.6
010.9101010
w
0.2
] F. Forward I 0.7
2.0 I 1.2
0.2
IC2
PIN 1
2 3 4 5
6 7 8
Power ON
0.7 0.5
0 0
4.3
9.0 8.8 5.6
TEL. REC.
0.6 0.5
0 0
4.3
9.0 8.8 5.6
Playback
0.6
0.5
0 0
4.3
9.0 8.8
5.6
Rewind
0.6
0.5
0 0
4.3
9.0 8.8 5.6
F. Forward
0.6
0.5
0 0
4.3
9.0 8.8 5.6
IC3
PIN
1
2 3 4 5
6 7 8
9 10 11
12 13 14
15 16 17
18
Power ON
5.1
5.1
5.1 5.1
2.0
1.9 5.1 5.0
1.1
7.3 1.4 1.1 0 0
0 0 0
4.5
TEL.
REC.
5.1 5.1
5.1 0
2.0
1.9
5.1 5.0
0
6.6 1.4
1.1 0 0
0
1.3 0
4.5
Playback
o 5.1
5.1 5.1
2.0
1.9 5.1
5.0
0
7.2 1.6 1.1 0 0
0 0 0
4.5
Rewind
5.1
0
5.1
5.1
2.0
1.9
5.1 5.0
1.1
7.2 1.4
0 0 0
0 0 0
4.5
F. Forward
5.1 5.1
0 5.1 2.0
1.9
5.1 5.0
0 7.2
1.6
1.1 0 0
0 0 0
4.5
PIN 19 20
21 22 23
24 25 26
27 28
Power ON
o
5.1
4.5 4.5
4.5
4.5 4.5 0
5.1
-
TEL. REC.
o 5.1
4.5 4.5 4.5
4.5 4.5 0
5.1
-
Playback
o
5.1
4.5 4.5 4.5
4.5
4.5 0
5.1
-
Rewind
o 5.1
4.5 4.5 4.5
4.5
4.5 0
5.1
-
F. Forward
o
5.1
4.5 4.5 4.5
4.5 4.5
0
5.1 -
IC4
PIN
1
2 3 4 5
6 7 8
Power ON
2.2
2.2
2.2
0 2.2 2.2 2.2 4.5
TEL. REC.
2.2 2.2
2.2 0
2.2
0
3.2 4.5
Playback
2.2
2.2
2.2
0 2.2 2.2 2.2 4.5
Rewind 2.2 2.2 2.2 0 2.2
2.2
2.2 4.5
F. Forward 2.2 2.2
2.2
0 2.2 2.2 2.2
4.5
IC5
IC501
PIN
1
2 3 4
5
Power ON
7.0
5.0 0
5.7 5.2
PIN
1
2 3 4 5
6 7 8
9
Start
8.2 8.2
8.2 8.2 0
0
1.0
0.9
9.0
Backspace
8.2
8.2 8.2 0 0
0
1.0
0.7 9.0
Cue 8.2 8.2 8.2 0 0
0
1.0
0.5
9.0
Dictate 8.2
0
8.2 0 0
0
1.0
0.3
9.0
Back o
0
8.2 0 0
0
1.0 0
9.0
I
F. Forward
I
7.0 1.4
0 3.6
2.2
QI
Q2 Q3
Q4
Q5
Q6
PIN
B
c E 8 c
E 8 c
E B c
E B c
E B c
E
Power ON
o
2.2
0 0.7 0
0 0 0
0
0.7 0
0 0 0
0 0 0
0
TEL. REC.
0.6
0
0 0.7 0
0
0.6 0
0
0.7 0 0 0
0.7
0
,0 3.1
0
Playback
o
2.2
0 0.7 0
0 0 0
0
0.3 0
0 0 0
0 0 0
0
Rewind o
2.2
0 0.7 0
0 0 0
0 0.7 0
0 0 0
0 0 0
0
F. Forward
o 2.2
0 0 0.5
0 0 0
0 0.7 0
0 0 0
0 0 0
0
-16-
IC & TRANSISTOR VOLTAGE
w
PIN
Q7
Q8 Q9
QIO Qll Q12
B
c E B c E B c E B c E B c E B c E
Power ON o
9.0 0 8.6 0
9.0 8.6 0
9.0
0.7 0 0 0.6 0 0 0.7 0 0
TEL, REC. 0.7 0 0
8.3
1.4 8.8 8.1 8.7
8.8 0.4 3.7 0 0.6 0 0
0.3 0.7 0
Playback
o
9.0 0 8.5 0 8.8 8.5 0
8.8
0.7 0 0 0.6 0 0 0.3 0.7 0
Rewind
o 9.0 0 8.5 0
8.8 8.5 0 8.8 0.7 0 0 0.6 0 0 0.7 0 0
F. Forward o 9.0 0
8.5 0 8.8 8.5 0 8.8 0.7 0 0 0.6 0 0 0.3 0.7 0
“N kl-?n-
Q14
BICIE
Q16
T
Q17 Q18
BC E B c E
=-i%-k
I Power ON I O 19.01 0
O1O.6IO 1.0 I O I 0.6 I 0.6
010 0 9.0 0 0.1 0.7 0
0
8.8 0 0 0.6 0
0 8.8 0 0.3 0.9 0.6
0.7 0.2 0 0.1 0.7 0
0 8.8 0 0.3
0.9
0.6
TEL. REC.
0.7 0.2 0
Playback
0.7
0.2 0
*
010
010
I Rewind I O I 8.7 I O
010.310
1.0 I O I 0.6 I 0.3
0.7 I o
F. Forward
0.7 0.2 0 0
0.6 0
Q20
1.2 0
I
0.9 0.6
Q21
2-l-!-
Q22
I ““ k-l?-m
Q23
I
Q24
I
BICIE BiCIEIB
CIE
+=
0.6 8.1 5. f
0.6 8.0 5.1
0.6 8.0 5.1
*
4.5 I 0.8
6.8 I 8.8 I 6.2 t 1.4 4.5 I 0.8 0.811 .8!0.2] 010.7101
I
F. Forward
0.5 0 0 0.6 8.0 5.1
6.8
I
8.8 6.2
1.4
4z-LB?-
0.8
1.8
0.2 0
0.7 0
Q25
PIN
Q26 Q27 Q28 Q29
Q30
B c
E B c E B c E B c E B c E B c E
Power ON - - 5.1 0.6 0 0 0.6 0 0 0 5.1 0 0
0.8 1.5 0.7 0 0
TEL. REC. - -
5.1
0.6 0 0 0.6 0 0 0 5.1 0
0
0.8
1.5
0.7 0 0
Playback - - 5,1
0.6 0 0 0.6 0 0 0 5.1 0
0
0.8 1.5 0 0.6 0
Rewind - -
5.1
0.6 0 0 0.6 0 0 0 5.1 0
0
0.8
1.5 0.7 0 0
F. Forward - - 5,1 0.6 0 0 0.6 0 0 0 5,1 0 0 0.8 1.5 0
0.6 0
k-k%
Q501
$
CE
00
Q502
$
BC
o
7.0
a=
Q503
CE
5.2 5.2
5.1 5.1
5.1 5.1
4.8 4.8
+
E
B
o
6.7
Baa&ii
010
0 I 7.0
0 I 6.7
010 0 I 7.0
+
o
4.6
0 6.7
I Rewind I 0.6 ] 0.6 I O 010
0 I 7.0
] F.Forward I 0.6 I 0.6 I O
0.6 0 0 0.9
1.4 1.5
0.7
Q505 Q506
010
017.01011.612.2/2.21
Q507
T
Q508 Q51O
B
c E B c E
“N k-R%-
BICIEIBICIEIB
Power ON 4.6
5.2 5.2
TEL. REC. 4.6 5.1
5.1
6.9
4.6
6.9 0 6.9 0
4.3
6.9 4.6 6.9 0 6.9 0
4.3
+
5.0 5.0
4.9 4.9
4.9 4.9
I Playback I 6.9 I 5.7 I 5.1
6.3! 6.916.910.6101014.3
Rewind
4.2 4.8 4.8
F. Forward
6.9
2.2 2.2
6.9
4.2
6.9 0 6.9 0
3.9
6.3 6.9
6.9
0.6 0 0 0.7
4.6 I 4.6
0.6 0 0
7.6
8.0 6.9
0
0.6 0
7.6
8.1 6.9
_2-l.x-
S
*O
SANYO Electric Co., Ltd.
d
Osaka, Japan
Jun. /’91600OO NS Printed in Japan.
-17-
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8
-
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