@>HITACHI
SERVICE
MANUAL
I
TK
I
[-No.
1659E
D-E99
-·f~
(U,
C, FS, BS,
AU,
W)
CONTENTS
Specifications
......
..
...
..
. . . .
..
.
..
.
..
. . . .
..
.
..
.
..
.
..
.
...
. . .
..
. . . .
..
. . . . . 2
Disassembly
........
..
............
...............................
.........
2
Adjustment........................................................ 4
Inspection
of
mechanism. ................................ 6
Lubrications
...
7
Block diagram
..
........
8
Schematic diagram
.....
.....
...................
10
Circuit
board
diagram.
..
. ................... .
...
13
Wiring diagram.. . . .
...
16
Schematic diagram (Counter
PC
board
section)
...
19
IC
pin function table .
..
.
..
..
.
..
.
.....
20
®@@
Microprocessor test program......
26
Replacement parts list . ....................................
27,
31
Exploded
view(Mechanism-FL-32A)........ .
29
Exploded
view
(Cabinet)
.........
33
KEY TO ILLUSTRATIONS
CD
POWER
{MAINS)
SWITCH
®TIMER
SWITCH
@COUNTER
RESET
SWITCH
@TAPE
COUNTER
@ ELAPSED TIME RESET
SWITCH
@ELAPSED
TIMER
(j)
DIGITAL
PEAK METER
@ A TRS BUTTON
@ FIXED BUTTON
@ A TRS
ST
ART
BUTTON
([j)
BA
TIERY
INDICATOR
@
TEST
INDICATOR
@DOLBY
B/C
NR
CHANGE OVER
SWITCH
@
DOLBY
NR
SWITCH
@
MPX
SWITCH
@ RECORDING LEVEL CONTROLS
@
INPUT
SELECT
SWITCH
@ HEADPHONE SOCKET
@ MICROPHONE SOCKETS
® MONITOR SWITCH
@TAPE
SELECT SWITCHES
@AUTO/MEMORY
REWIND SWITCH
@
REC.
MUTE BUTTON
@PAUSE
BUTTON
@RECORD
BUTTON
@FAST
FORWARD BUTTON
@ PLAYBACK BUTTON
@ STOP BUTTON
rJj)
REWIND BUTTON
@EJECT
BUTTON
:[j)
OUTPUT
LEVEL CONTROL
SAFETY
PRECAUTION-------------------------.
The following precautions should be observed when servicing.
1.
Since many parts in the unit have special safety related characteristics, always
use
genuine Hitachi's replacement
parts. Especially critical parts in the power circuit block should not
be replaced with other makes.
Critical parts are
marked
with~
in the schematic diagram and circuit board diagram.
2.
Before returning a repaired unit
to
the customer, the service technician must thoroughly test the unit to ascertain
that
it
is completely safe
to
operate without danger
of
electrical shock.
SPECIFICATIONS AND PARTS ARE
SUBJECT
TO
CHANGE
FOR
IMPROVEMENT
STEREO
CASSETTE
TAPE
DECK
December 1981
TOKAI WORKS
O-E99
J
SPECIFICATIONS
<:;emiconductors :
Modules:
ICs:
Transistors :
FETs:
Diodes:
LEDs:
Track System :
Tape:
Tape
Speed:
Recording System and
Bias Frequency :
Erasing
System :
Erase Ratio :
Frequency Response :
NOR-I:
Cr02-ll:
FeCr-lll:
METAL-I\
5
11
58
2
58
14
4 track 2 channel stereo
Cassette tape (C-30,
60,
90)
4.75cm/s
AC
bias,
105
kHz
AC
erase
65
dB or more (at 1 kHz)
20
Hz-19
kHz
30
Hz-17
kHz±3
dB
25
Hz-18
kHz*
20
Hz-21 kHz
30
Hz-18
kHz±3
dB
25
Hz-19
kHz*
20
Hz-19
kHz
30
Hz-17
kHz±3
dB
25
Hz-18
kHz*
20Hz-21
kHz
30
Hz-19
kHz±3
dB
25
Hz-20
kHz*
S/N
(Signal
to
Noise
Ratio) :
Dolby
NR
OFF
:
61
dB (Weighted A, Re-
Dolby
B NR
ON
:
ference
3%
THD,
Metal tape)
61
dB*
69
dB
(Weighted A, Re-
ference
3%
THD, Metal tape)
69
dB*
Dolby C
NR
ON:
75
dB
(Weighted A, Reference
3%
THD,
Metal tape)
75
dB*
Wow
and
Flutter:
0.032%
(WRMS)
0.10%
*
Input Sensitivity and Impedance :
Microphone : 0.4mV,
300
ohms-5
kohms
Line in :
Output
Level :
Output
Load Impedance :
Line
out
:
Headphone:
Distortion
:
Channel Separation :
Cross
Talk :
Power
Supply :
Power
Consumption
:
Dimensions :
Weight:
Motor:
Heads:
*According
to
DIN
45
500
100mV,
50
kohms or more
500mV
50
kohms or more
8
ohms-2
kohms
0.8%
(1
kHz,
160
nwb/m)
30
dB
or more (at 1
kHz)
60
dB or more (at 1
kHz)
AC
120V,
60
Hz (U, C)
AC
100-110V/115-127V/
200-220V
/230-250V,
50/60 Hz (W)
AC
220V,
50
Hz
(FS)
AC
240V,
50
Hz (BS,
AU)
29W
110(H)X 435(W) X 282(0)mm
6.3kg
FG
Servomotor X 1
DC
motorX
1
1.4
mm
gap Metal R & P head
(ferrite)
Ferrite guard
Metal erase head
(Permalloy)
DISASSEMBLY
1. Cassette
door
Depress
the eject button to open the cassette door.
Remove
@ (two) nylon rivets
and
remove the cassette
door.
Note:
The
photos
used here show the
[WJ
model unit.
- 2 -
0
(
(
®
BT3X12
@
F3X10(BT)
•
~
1.___·
-/
@
BT3X10
@
BT3X12
W
BT3X12
©
BT3X10
2.
Upper
cover
Remove @ and © (two) screws.
3.
Bottom
cover
Remove © , @ , ® and ® (five) screws.
4.
Front
panel
Remove @ and @ (eight) screws.
5. Cassette
chassis
After
removing the
front
panel, remove ® and
CD
(three) screws.
6.
Power
PC
board
Remove Q) (two) screws and open
the
PC board.
7.
Main
PC
board
After
removing the
front
panel, remove ® , ® and
CD
(seven) screws.
@
BT2.6X6
U-t.~
GD
83
X6
CD
F3
x
10
(BT)
8.
Timer
switch
Press
the
projection
of
the
timer
switch
holder
in
the
direction
of
the
arrow
G)
to
remove
the
timer
switch.
Engage section @ and then press
the
switch
holder in
the
direction
of
the
arrow ®
to
install the
timer
switch.
Front panel
Timer
switch
Timer
switch
knob
9. Meter
PC
board
assembly
Remove @ (two) screws.
10.
Counter
PC
board
Remove @ (three) screws.
11.
Function
switch
PC
board
Remove
@ (four) screws.
- 3 -
ADJUSTMENT
Perform the following adjustments in the sequence stated after cleaning the heads, pressure rollers, and capstans with a head
cleaning stick moisted
in
alcohol. Also, unless otherwise specified, set the switches and controls
to
the positions indicated
in the
table.
(:''
Symbol
No.
Switches
and
Controls
Position Symbol No.
Switches
and
Controls
Position
S1
Input
select
switch
LINE
S2
Tape select switch
NOR-I
S3
Auto/memory
REW
switch
OFF
S4 Timer
switch
OFF
S5
Dolby
NR switch
OFF
S6
Dolby
NR
B/C
switch B
Measuring
Instrument
and
Connection
Check
Item
Adjustments
Measuring
Input
Output
Tape
Instrument
Terminal
Terminal
MTT-111,
1
Tape
· Frequency
--
LINE
3000
Hz
speed
counter
OUT
(3150
Hz*)
Tilt
and
·Head
(1)
height
of
adjusting
--
--
--
the head
jig
2
(2)
Head
· VTVM
--
LINE
MTT-114
azimuth
~:~TRI
(10kHz)
·Audio
Digital
oscillator
3
peak
(400
Hz)
LINE
--
meter
·
Attenuator
IN
·
VTVM
MTT-150,
4
Playback
· VTVM
TP2L, R
400
Hz,
gain
--
20m
Max-
well
Note:
1.
Adjust
within
30
sec.
after heat-running for more than
20
minutes.
2.
Use
the
Hitachi
head
adjusting jig
and
instructions
(consult
nearest Hitachi office)
to
obtain the correct
head height,
tilt
and
azimuth. This adjustment
has
to
be
done alternately.
c
B
A
Fig.
1
- 4 -
S7
MPX switch
OFF
SB
Monitor
switch
TAPE
S109
ATRS
switch
OFF
S111
Fixed switch
ON
RV1L,
R Record level controls
MAX.
RV2L, R
Output
level control
MAX.
* According to
DIN
45
500
Adjusted
Adjusted
Mode
Remarks
Position
Value
Semi-
3000 Hz
Playback
variable
resistor in
+20H
- 5 z
See Note 1
the motor
(3150
Hz*)
Screw@,
Playback
--
See
Note 2
@.©
Playback
Screw©
Output
See Note 3
Max.
O
dB
--
RT303L, R
indicators
See
Note4
flash
--
Playback
RT301L, R
580mV
See
Notes
3.
When the maximum values
of
both channels are
dif-
ferent, adjust to the maximum value
of
the L channel.
In
this case, the difference between the maximum values
of
both channels should
be
within 2 dB.
4.
1)
Set the monitor switch
to
the SOURCE position.
2)
Feed
a
400
Hz signal
to
the LINE
IN
jacks and
adjust
the audio oscillator
output
so
that
the level
of
TP1L,
R
becomes
580mV.
3)
Then, adjust the attenuator
to
lower the output level
by
0.5
dB
and
adjust RT303L, R so that 0 dB indicators
of
the digital
peak
meter flash.
4)
Adjust
the attenuator to increase the
output
level
by
0.5
dB
and
confirm O dB
indicatms
of
the digital peak
meter
light up.
5.
Playback a test tape (MTT
-150,
400 Hz
20m
Maxwel
I)
and
adjust
RT301
L,
R so that the level
of
TP2L, R bec.omes
580mV.
I
\
0
(
t
D-E99
ATRS circuit adjustment
Measuring
Instrument
and
Connection
Check
Adjusted
Adjusted
Item
Adjustments
Tape
Mode
Position
Value
Remarks
Measuring
Input
Output
Instrument
Terminal
Terminal
·Audio
oscillator
Hitachi
Output
Bias
(1.5kHz/15kHz,
LINE
LINE
difference
1
UD
C-90
Record RT103L, R
See
Note
1
current
OdB-23dB)
IN
OUT
tape
within
·
Attenuator
±0.5
dB
·
VTVM
(1)
Set
RV1
L,
R (Record level
control)
to
Minimum.
-
2
Bias
trap
See
Note
2
(2)
·
VTVM
--
TP3L, R
--
Record
L 108L, R
Min.
I
I
·Audio
I
I
oscillator
Hitachi
I
Ou
tout
3
Record
(1
kHz,
OdB-
LINE
LINE
UD
C-90
Record
RT102L, R
difference
See
Note
3
level
23dB)
IN
OUT
wit'lm
·
Attenuator
tape
±0
2
dB
·
VTVM
I
Set
the
AUTO/MEMORY
REW
switch
(S3)
to
PLAY
position
and
connect
a
diode
(1S2473
or
1S2076) as
shown
in
Fig.
2.
(1)
I
Then, set
the
power
switch
to
ON.
(Microprocessor
test
program
is
performed)
4
>---
AF
oscillator
(2)
·
VTVM
--
TP4
--
·Audio
oscillator
Hitachi
5
A/D
(1
kHz, 0
dB-
LINE
LINE
UD
C-90
conversion
23d8)
IN
OUT
I
tape
·
Attenuator
·
VTVM
Note:
1.
1)
Set
the
monitor
switch
to
the SOURCE position and
feed
a
1.5
kHz signal
to
the LINE IN jacks
in
the
recording
mode.
2)
Adjust
the
audio oscillator
output
so
that
the digital
peak meter indicates 0 dB. Then, adjust the attenuator
to
lower
the
output
level
by
23
dB.
3)
Set
the
monitor
switch
to
the TAPE
position
and
read
the
playback
output
level
of
LINE
OUT
jacks.
4)
Then,
set
the
audio oscillator frequency
to
15
kHz and
read
the playback
output
level
of
LINE
OUT
jacks.
5)
Adjust
RT103L, R so
that
the
output
level difference
between
two
frequencies is within
±0.5
dB.
2.
With
the
condition
shown
in
item
1,
set RV1L, R (Record
level
control)
to
Minimum. Then, adjust L108L, R so
that
the
level
of
TP3L, R becomes minimum.
- 5 -
Output
I
--
RT101
difference
See
Note
4
within
I
±0.3
dB
Record RT302L, R
OdB::0.3dB
See
Note
5
i
3.
1)
Set the
monitor
switch to
the
SOURCE
position
and
feed a 1 kHz
signal
to
the
LINE IN jacks
in
the
recording mode.
2)
Adjust
the audio oscillator
output
so
that
He
digital
peak meter indicates 0 dB. Then, ad1ust
the
a1tenuator
to
lower the
output
level
by
23
dB.
3)
Set the
monitor
switch to the TAPE
position
and
ad1ust RT102L, R so
that
the
output
level
dfference
between SOURCE and
TAPE
is
within
±_C2
dB
at
LINE
OUT
jacks.
4.
1)
Connect the VTVM to TP4. press the
PLA(
button
and
read
the
output
of
the 1
KHz
signal.
2)
Next, press the
REC
butto:i.
read the outp:1t
of
the
12
kHz
signal and adjust
RT101
so
that
the
output
difference between 1
kHz
s1·2nal
and
12
kHz ;i gnal
1s
within
_+
0.3
dB.
3)
After
adjustment, remove a diode
as
shovvn
ir
Fig.
2.
0-E99
1
2
3
4
5
6
7
8
9
IC401
Pin@
152473
or
152076
Fig. 2
5.
1)
Perform the
ATRS
test using Hitachi
UD(C-90)
tape.
2)
Set the monitor switch
to
the SOURCE position and
feed a 1 kHz signal
to
the LINE IN jacks
in
the
recording mode.
3)
Adjust
the audio oscillator
output
so
that
the digital
peak meter indicates
0 dB. Then, adjust the attenuator
to lower the
output
level
by
23
dB.
·4)
Read
the
output
of
LINE
OUT
jacks when the
monitor
switch
is changed over, and adjust RT302L,
R so
that
the
output
when the MONITOR switch
is
set
to
TAPE is within ±
0.3
dB with respect to the
output
when the monitor switch is set
to
SOURCE.
INSPECTION
OF
MECHANISM
Check Item Reference Value
Remarks
Pressure
roller
Pressure
420-500g
(Take-up side)
Measure
in
playback mode (Fig.
3)
Driving force
120g
or more
Pressure
of
pressure roller (Supply
130-180g
Measure
in
playback mode (Fig.
4)
side)
Pressure
of
take-up idler
60g
or more
Measure
in
playback mode (Fig.
5)
Take-up
35-65g·cm
Torque
Fast
forward
Measure
in
fast forward mode
75-110g·cm
Rewind
Measure
in
rewind mode
Supply side
(See )
Back tension
9-12g·cm
Note 1
Measure
in
playback mode (Fig.
6)
Take-up side
1.7-5g·cm
Supply side
Brake torque
50-100g·cm
Measure
in
stop mode
(Fig.
7)
Take-up side
Head
plate return strength
200g
or more
Measure
in
stop mode
(Fig.
8)
Head
plate play lock allowance
300g
or more
Measure
in
playback mode (Fig.
9)
Head plate pressing strength
150g
or more
Measure
in
playback mode (Fig.
10)
- 6 -
•
•
)
Tape driving
force
Fig.
3
Brake
plate
~
i : :
.i~-
'@>i'i;
Supply
side
Take-up
side
brake
torque brake
torque
Fig.
7
Note
1.
Back tension adjustment
Head plate
Pressure
of
pressure roller
(Supply
side)
Fig.
4
Head base
Head
plate
return
strength
Fig. 8
When the supply back tension is
out
of
the reference value, loosen
the
BT
spring fixing screw and move the BT spring up and down to
adjust
so
that the back tension is within the reference value.
Reel
(Take-
up
side)
Fig.
5
Head
plate
play lock
allowance
Fig.
9
BT
spring
fixing
screw
LUBRICATIONS
'· Lubricate one or
two
drops
of
oil to rotating
point
or
lubricate
grease
to
sliding point.
Lubrication
Lubricate the respective parts listed once every
1000
hours
or
once
a
year
under normal conditions
of
use.
Avoid
oiling them excessively, or rotation
may
become
irregular
because
of
oil splashes.
Rotary
section
Sliding
section
Metal and metal
Mold and metal
Metal and metal
Mold and mold
Mold and metal
Supply
side
backtension
Take-up side
backtension
Fig.
6
El~~
Head
plate
I
D-E99
pressing
Chassis
base
strength
Fig.
10
Oil
or
Grease
Pan
motor
oi
I
(10W-40)
Sonic
slider
oil
(#1600)
Hitasol
(M0-138)
White grease
(FL-LUBE-A)
Spring resonance prevention Froil
(GB-TS
-1)
- 7 -
:i-
t
D-E99
JI(
IL
luHE
IHI
JK2
~]
BLOCK DIAGRAM
SI
~
QIOIL
MIC.
AMP.
To Reh
+ 14 v
0301
L
Q302L,303L
PRE.
AMP
P.B.EQ
AMP
MODI
OIL
DOLBY-NR
<RECORD I
r-----------------------------
1
I
I
BIAS
TRAP
L301L
+IOV
RHB
RH9
MOD301L
r-----------------------,
DOLBY-NRI
_/
I
(PLAY
BACKll I
030'IL
SWITCHING
!P.B.
EQl
I
I
0420
421,
423
REVERSE
CURRENT
PREVENT! N
0413
R428
SWITCHING
<FOR
RESET!
SOLEHOIO
OET.
INPUT
TAPE
EHO
PULSE lf!PUT
+14V
~
i:;>T'302~
A/D
CONVERTER AOJ.
0416,417
SWITCHNG
+l
4
V
0107L
MUTING
IREC.
SIGNAL!
QIOBL
REC.
AMP
52
- I
[_!A~f;_SE:liill
D-E99
(3J(2)(1)
(4)(3)(2)(1)
~--+-+--------+-.f.-,
~
~
0113
SWITCHING
!BIAS
OSC.
!C301Ul/2l
LINE
AMP.
!SPECTRAL
DES
KEW
ING l
'
' '
~~
1
C332L
Q30!5L
.
R3l8L
SWITCHING -
(5fl~.:~~)
CPU.
MEMORY
lbl
0102
SWITCHING
>T-1~~1-~~-1-~-.;-~-~_,_:__{'.
),---.---~
+
22V
To I
C404
@rERMIHAL
010~
SWITCHING _...-
To
R315L
Rl46
0106
SWITCHING
RV2L
{OUTPUT]
--------<--+-<
%1'
~
0306L
MUTING
R325L
0308L,308R
IC
302
IC303L
r----,
PHONES
AMP.
R323L
To
Rc:tt
ZDJOI
MUTING
SWITCHING
(A/0
R/L
SELECT! AMP.
RECT.
IA/DI
r----,
..'.~:r.:~r
·~,
STOP
0409
l-'2el---<-+'-----+--+--"
SWITCHING
+ov
Rl76l
0431
LEVf.L
SHIFT
Rt79
{
Rl80
~
ERASE
HEAD
0114
SWITCHING
!BIAS
OSC
I
~~RT3~.o
AOJ.
r--,,;;;~;;;---,
FL
METER
I
I
L
____
r
R475
0302
LEVEL
SHIFT
I
li
SOURCE SOURCE
o
58-3
~
R.<159
r--~-
J~NiTOR!
fl
TAPE
se
_ 4 1 TAPE
I
LED12
rf\!'+i
!SOURCE I
~,.\:'f;:'.
+IOV
0513
SWITCHING
--
.J. l
LEDl3
=TAPE'
-16,1
+22V
R442
-llV~
fi;:··-~1
Z0404
~i
,
VOLT.
STA°T
1
1
(2)~1
':.·-
"Ji
rF~:~
f- - - -
--i
0512
RECT
-ro'-"
~
..
_·,
I~~
Ac
12ov
I
- '
~1
~
60Hz
R503
RSO~
G~\
2
~:
~jFOR
FS
:~AU
f---
-
_J
+14V--
'-·--~'-0----c:-,I
• I I . I
RSll
I
PLl-3
~-11~~
AC220V,50HI
0514
R5ost__J~'i04
R502~·
.
~.·.
\~~
A~~~~~~OHz
I
~~~N-~""'...'c510
!
~gct:t,.·~
1
;;
~--IFORBS,AU.'._J
0507
,j,.
.,!,:
Z0502
0516 .
~I
1~00
1
I
SWITCHING
VOLT STAB.
~EH!
:',,~1
i
ll'OW~:El!i
ACIOO-lloJ
0510.
0508
1
~nr
, .
:;;
1 115V-127V.r
I i
"""'
2.0(JV-22CN,
To
SOLl,2
---w.----+4----.----W----1
.
[I
--'
\
--~-
-
---
230V-250VI
RSIC
i:
0509
I
\~
I
50/60Hz
""
·,~,,
r~'I
L - - - -
_J
To
SOL3
-------K-
..-
TAN
I
I
MOTOR[
0503-05i01
40504
I
RE:T
!
.,,"olf!l~f
~:.0~
"'"'Cll~~~g;'.
-i1},I;
R431
...
0504
! -
--- - - l
VOLT
STAB
0402
REEL+:lDR
@;-
~
SWITCHING~
____
+_•_v
__
·------------------·-
---·
-----Z-©
!
~g:ToiTAB
0407
0506
~
'
'-----------------------------------1------'
REVP~~~E~~l~NT
(
M~v;:~T~H6;ffvEt
I
_J
-------
- 8 -
- 9 -
Note
1.
Voltage measured
al
base
of
chassis with minimum
volume control and no signal.
2.
Nomenclature
of
Resistors
and
Capacitors.
r -
--
- -
Circuit
No.
'
'
Value
No
indicated
ll(Ohm)
'
r--
-
M:
1000kll
'
f '
' '
No
indicated ±5%
R101
:
,---
Tolerance
K
:±10%
150-"
'
M:±20%
~s·1·K-_;
r
._
_____
Wattage
No
indicated
v.w
'
'
No
indicated Carbon film
:
RC
: Composition
lo--------
Sort
RW
: Wire wound
RS : Oxide metal
film
RN :
Fixed
metal film
Circuit No.
'
No
indicated
µF
:
Value
P:
PF
'
No indicated
±10%
..L
c1'01
:
J:
±
5%
M:±20%
To.001.-M'--
--
Tolerance
z: +80%,
-20%
D:
±0.5pF
C:
±0.25pF
.L
Ceramic
T
:+
Electrolitic
Sort
~
Mylar
T
!:I..
Polyester
T
++
C102
'l.I..
Styrol
T
-
0.1/16-,
__
-
Vollage
No
indicated 50WV
3.
Be
sure
to
make
your orders of resistors and
capacitors with value, voltage, tolerance
and
sort.
4.
When replacing capacitors marked with • , use
specified ones staled on parts
list since required
temperature characteristics.
SCHEMATIC DIAGRAM
r-
o";Oi"L
--;.;,-L-;
--M;L~E~
-a~;:-'
--.;w;-
-IC-;;-
-
Q~
-
;L
-;a;:
--
rol02--
~
-
;.,7--
L£Oii
LEDi
IclOZ
lc1'0!
QIO-;- --D-;;;-
o.;3-M003o1L--o'i"O'SL
--
jc;o;L
-
o;L
-01();
bsc1?40LN
2sc2021 2SC2021
TA30118
SLRS3URCI
ZSC4ll8CO
152473
pP040llC
2SK68A-N
2sc1740LN-SE
HZ91
2SC4HCO
1sc!o21
SLR54GC
SL-C
HDl40668P
HAl205S
ZSC4S8CD
152475
IS2475
TA3011B
ZSC4511CO
NJM4SS80 2SD65!1E
1s2c·
I
-SE
SWITCHING
SWITCHING
DOLBY-NR SWITCHING SWITCHING
"Af
DSC
PRE
AMP.
P.8 EQ AHP.
VOLT.
STAB.
SWITCHING SWITCHING
RECITEST
ATRS
SWITCHING
SWITCHING OOLBY-NR
SWITCHING
LINE
AMP.
MUTING
SW1TC1
MIC. AMP.IFOR HPXllLEO DRIVEi
IRECORDI
lP.8
EQ
SWITCHNG-LEO DRIVEi
REC
SWITCHING
IPLAY
BACKl(b~W~lt.a)
(~~~~G
)
MOOIOIL
l3.5 !DOLBY
8/C
I
IOY
r----------------------------------
I&
~
JICIL
JK2
RIOIL
...
I
R102l
&601(
PLAY
HEAD
r--'
I
I
I
IC403
)&P04011C I
BATTERY
WARNING
Z0406
I
HZ49C
VOLT. STAB.
0426
I
152473
LEVEL SHIFT I
IC401
I
H044801A3S
MECHANISH/ATRS I
CONTROL
D407
IS2473
REVERSE
CURRENT
I
PREVENTION
I
D402
:itlJ.NG
I
LED4
I
5LR34URS
D417
112473
REVERSE
CllllENT
PREVENTION
LEOS
TLG12U
LEDS
TLG123A
LEDq
I
SLRS3URCI
I
I
®
C401
tM6
- .
...
,
680
SI
I
=~-mt-
~
·
LIN(;
IOV
Cl56
47/16
Q403
.__
:;;;,=.
..
;--;:;;;--;-40-;-
~D~~D-;-040-;-;;;;:
-;.
o;,:;-Q40.:40T.409-
-
2SC4S8CO
2SC4ll8CD
2SCA9CD
2SC45eco
SLR
TLGl23A
1awa
IS2473
182473
19"2473 2SC4ll8CD
SWITCHING SWITCHING
SWITCHING
SWITCHING
34URS
REVERSE
CURRENT
SWITCHING
SWITCHING
ILEO
DRIVE
I ILED DRIVEi PREVENTION I
LED
DRIVEi
-10-
,
I
I
I
I
J
D424,4U
IS2'4T:S
SWITCHING
®
&'bi
&'.ff
'6~'
MYl.JllD lllYLHiU llYL.(MJ
\'II .....
IOKlll
...
osc.
ADJ.
Cl
..
-
Cll?'
..
~--1--t--+-<•COIO
L-----i--+---•CMI
DAU
lT•
tao:s I
...,..._
______
..._
____
.,.,
L..---
14-1
'2:
LJll
0
i~
_
_Jl_
luLfl
0105
0106
L----
IC401 0
RIJTL
9.21C
+
Cl27L
10/16
0105
C145
I0/'16
...
ISK
R147
4.7J(
....
470
ICAOI
@---+------,
....
..,.
..
•..
IC40r
0
....
...
IC401 @
..-.+--_.
ON
1
POWER
~
n
OH
U_L
46
~
0407
....
2.2
M
OTHER 0
C404
47/10
....
"1£L
ruLIE
Rt44
3.3K
Ql07L
===o
Sl-4
R321 ISK
JU1
qo\ic11t
Qo(Cl,6V
--
-
f"'T"A"P"E~..,.,.---,...
0
@).-...~
........
~~~~~~~~~~~~~~~~~~~~~~~...I-~~~~~-~~~~~"'--~
---------------
- -
1C402
D405.404.405
D408.~IO
Q50T.508L.I08ft
D411
PST51S
IS2475
IS2473
2SC4S8CO
152473
PULSE
REVERSE
CURRENT
SWITCHl!Ol SWITCH I
NG
SWITCHING
GENER.<tl"OR
PREVENTION
lA/D
R/L
SELECTION!
D406
IS2473
REVE~vl:~NT
-11-
-- --
--
---
-- ----
----
-
----
Q4l0,
411
1C502
l/Z
lCIO
4 DllOI
Qll09
0412 D412 ~I ZD405
==
~~"=
c~-=~
'~tr'
~~~
::,:T~~
IS{tJlL
'f~R
1111
1~M~
2
t
Al'C)
<FOR RESETI
lFOR
RESEnSHlf'T
SHIFT SHIFT
0302,303
2
·~~~l~
~
SHIFT
0433
152473
SWITCHING
Q4l·
2SA~
SWITC
-;-
-IC~
-o'iOil-;L-;;-
--
-;;;-S02-;;
-
;.;;;-,,.,--
Uoii
~~
IctoZ
1ci0'5
Ot0-;;-
-o-m-
roo3--Mo;;c,IL--030i'i.
- ITTO;L-
;L--D,;-
-zoio,--Q-;-
aim
Oioal
0428ici04"1'20;;-
;-;;,
0109
QH,--
Oiii--.
473
,,PD40tic
2
sKsaA-N
zsci'No~-sE
HUI
ZSC45ICO
2
sc!o
21
SLRMGC
sLRMGc
H0140HBP
HA120ss 2sC458CD
1s24n
1s2473 TA3011B 2SC458CO
NJM455110
2so&S!IE
1s2•n
R05
IEB 2sc4511eo 2sc458CD 2SC458CD 1s241s NJM4558112sc45BCD2S.111'132so941 2so&&1 c 2SA&73AC 2SDU1'C I
CHING
AFOSC
PRE
AMP.
PB
EQ AMP.
VOLT
STAB
SWITCHING SWITCHING
REC/TEST
ATRS S"'ITCHING
S"'ITCHING
OOLBY-NR S"'ITCHING
LINE
AMP.
MUTING
SWITCHING
MUTING SWITCHING MUTING
REC.
AMP
LEVEL
BIAS
S"'ITCHING
BUFFER
REC
BIAS SWITCHING ERASE
• · · · . . lP.B
EQ
SWITCHING~LEO
DRIVEi
REC
SWITCHING
IPLAY
BACKl(SPECTRAL ) (SPECTRAL )
IREC.
SIGNAU
SHIFT
CONTROL
OSC.
(
ERASE
BIAS )BIAS
OSC.
1
ZD:501A,B
HZ-118
x 2
VOLT.
STAB.
RIIS
J5K
0101
flll4
4.TK
IM4•
ISIC
7
-<D
4,7
040..407.-- -
<Mn
2SC488CD
~ING
SWITCH!
NG
l
LEO
DRIVEi
·
OE
SKEWING
DE
SKEWING
zo.o
OSC
FOR
METAi.!
®
D.t.TA
CTo
ICl03
J
IOV
©
'----!--+--+-
CllO
'-------'--+---
CMO
o436L------+-----CllZ
--------------
0424,421
lC40ll
0405.404.405
0409.4!0
Q507.soet..ll0811
0411
1Sll47ll
PSTSl5
112473
IS2473
H~CO
152473
5"'1TCHING PULSE
REVERSE
CUARENT
SWlll:HING S"'ITCHI
NG
SWITCHING
GENER=i!
PREVENTION
lA/D
R/L
SELECTION!
0406
152473
REVEflfEv'i:~NT
-11-
0103
0106
L---
JC401 ©
IC401
@
+--t--~
~in
w.a:.
!LL
4.fiV
OTHfR
0
Cl2eL
0.0000
IMI
0105
Cl45
t0.116
....
331(
....
•••
RV2L
INPUT
R
LIRI
20K'9J
I GltO
1_
METIA
IEMSmVITY
ADJ.
Rtu:L
IK
Cl40L
llP
IC I
ZD405
L
33
..
H
l!llAS
TRAP
AOJ.
18.~
"
-,
I
I
I
_J~
.....___~
Lm3
RIS8L
I.SK
"'"
100/20
I
~2l
I
~~
RTI03L
(CJ
J.
U04
Rl73
...
fi'.3b1w
ltlCl5
REC21.3
47
RS:NU!IE
REC.
HEAD
I
0105
IS2473
I SWITCHING
I
I
12.5METAL
16.7NORMA
OTHER
0.6
I
ERASE
HEAD
.--~~~-1-+-1-<:,_:'L;X
I
I
R324L
..
I To Itch
I
I
1
0115
2SA673AC
I
SWITOilNG
<BIAS
OSCl
IQll4
1
2SC408CO
SW1TCHING
lBIAS
OSC
I
I
M00302
FL
METER
I
1c110S
1
~!1111':
PHONES
AMP.
Lf:OlS
TLGl23A
"K-2
~
I
LE012
SLR34UR5
QSDI
2SCl061S-C
VOLT.
STAB
OSl7
OSl35D
RECT.
Q502
2SCI061S-C
VOLT. STAB.
D502
DSl350
RECT.
ZD404
HZllB
VOLT.
STAB.
Z0502
HZl2C
VOLT.. STAB
0508
DSl350
RECT.
D423
llS13SO
REVERSE
CURRENT
PREVENTION
D5l6
DSl350
RECT.
D501
DSl35D
RECT.
-----~-----------
___
...J.
___
_
_J
I
.,JK
IL
jLINE
OUT I
R47S
IOOIC
l-11.1
0302,503
ZD402
04M,419
0415.416
0420,421
0512
0514
IS2473
LEVEL
SHIFT
·~l~l~
SHIFT
~~~
·~i1bR
s
2
.!~~~G
~:~~E
~~~~
CONTROL
lSOLENOIO
Cl..f<RENT
0433
!
52473
SWrTCHING
DRIVE I
PREVENTION
Q414 Q
507
0515
2SA.q33R
2SC4~8CO
152473
SWITCHING
SWITCHING
SWITCHING
D513
IS2473
SWITCHING
20504
HZ6B
VOLT.
STAa
I
I
--0;;-----;,,6-:
16.,:~,,~~·.1~~.:--
--:
Y~>o--.,--4-.-11+---.--<r...o--l--!-O..::::..:..
1
:g~2
1
ov
I
:
•~
I
I
t:,.
I
'-----------_J
2'
Q505
0506
04!7.420
0418
250839·9
2909'7
2SC459CD
2$0947
VOLT. STAB. SWITCHING SWITCHING SWITCHING
0511
152473
RECT.
!MOTOR
DRIVEi
<SOLENOID
DRIVEi
-12
-
Q504
2SC!061S-C
VOLT.
STAR
r-fror
FS,BS,Aur--
-
--.
;
ffi!!}
AC220V
,SOH1 :
lFor
FSl
I
6 I
I
I
AC240V,50Hz
f
L--
--
~~B!_.~~
0505.503.504
0Sla50
RECT.
D508
OSl350
RECT.
Z0503
HZlll2
VOLT. STAB.
Z0405
R02.7
LEVEL
SHIFT
(·•··.·
(
CIRCUIT BOARD DIAGRAM
I
MAIN!
- 13 -
R[C
O
~EC
PAUS£0
OTHERS
2L5
EC
207
-14
-
looLBY
SWITCI
f
POWER!
I
fco-UNTER
i
I .
..J
il
FU~_CTION
SWITCH
14
~
--
15
-
WIRING
DIAGRAM
,---i
For
U,C
f--------------,
6 I
I
ACl20V,
60Hz
::r;:;LJ1
I
:
D=
1
\POWER
SWITCH1
1
:
..
l_
1 6
eow"
i
i
,'1.i;
--;:l
1
1
L"
"'"'°'""
:
: m
,~
........
·1
I : I 1 \
',
8LU
:
[J
&
I
'1....-
.....
-~so,,.0""1'1
I
[Pow@
I
L
________
_
__
J
r----iFor
FS,BS,AU}----------1~
I I
POWER
SWITCH
i I
I
§WR]
----- I
6
POWER
I
f:c
TRANSFORMER
I
5001
I I I
1
/.1
~ni-
}-,
+
.ltJ
d I
IX
: -
·-
TL{_j
_r~
,L.
r
·''
I ,
,,
:;::':,~'"'
i
'-------71-
AC240V,50Hz
I
--_____\_____l-
I
For
B
S,
AU
l ;
__J
L
____
--
-----
-----
1
_
- - -
-i
For
W r - - -
I
i
I
!
I
I
I
I
I
I
I
!
__________
_
__
_J
1(-)
WHT
Pl
1
@=~======~BL~K==:__,
WHT
PL2
·~===
9
L"='K'='===+
i
P L 3 ®:::;===.rs:"f;=r====--'
l
··-------i
~
J I
II
~
LJ-_JJ
POWER SUPPLY
BLOCK
-~
-~11_
~
--------J
'~---LJ
_j
\TEST/BATTERY
WARNINGI
~f@r;;
<>-uE.09
~····
LED3
I
I
[ 1
EJ
S104
St
DJ
io.IC3·0_l.·
I .
L
- 17
__
J
Q
CAPSTAN
MOTOR
BRNl
D
J J
l l
su{1Ii~
,
BLK
t
ORN
RED
$ 4
TIMER
U
~
&•
g;
I
____J
lJJ1"1ER
SWITcHl
17
--
FF.
SOLENOID
s
112
REC.
PREVENTION
ERASE
HEAD
[MONITOR
INDICATORl
REW. SOLENOID
PAUSE SOLENOID
ORN YEL
SI
0 8
STOP
EJECT.
BLK
GRY
PNK
!RECORD
VOLUME!
Q:
:s
IT=:J
I
J.
L___J
18
--
(
t
SCHEMATIC
DIAGRAM
(Counter
PC
Board
Section)
FLI
FLUORESCENT
DISPLAY
r:-----
1
II
If
1-1
'111
OCI
I_
I
TAPE
COUNTER
R450
I 2 3
•
0 6
7
•
680
-H.5
I
,j,
~""
I
Z0408
~
I
--,
.....-~~~~~~~----,
I
I
C1
C1
C.1
Cl
Cl
I
ELAPSED
TIMER
I
•
10
II
12
13
14
15
16
17
18
10
20
-
...
I
I
I
I
r,t'
I
I
F.§.o~
~60K
_._
0------0
I 0
II
·i
..
,,
5114
Z0"05
•OK
l~m.Eo
TIME I
D-E99
Z0401'J(
R430
06K
R42q
'K
Q413
~
--
--
--
-L-
--
-L-
>--
--
--
--
-
--
-1q_a
---------------
-,
·~
•OK
I
JC404
I
•
I
I
I
I
I
I
I
CLOCK
I
.y.._
L_
- 1811
---o
ZD408
I
RESET
·l--
I I
PO"'ER~
~
2
~
GNO
HZ-98
I
KEY
INPUT
;::::J
SOURCE
2
~
VOLT.STAS
J
~
•OV
I
TAPE
ENO~
•
II
PULSE lNPVT
5
0428
REEL
PULS
I
...
~-n
5113~
R4!S4
IOK
0
IVE OUT
...
I
H
~
.,,.,
WPOWER FREQ
50/6()HZ
6
I COUNTER
t--d-
IHPUT
23
I
SOL 2
7
22
!
n
ISOL.EHOIO
SOLi
•
r--
OET.
INP
21
I
II
•
~.CPU·
MEMORY:
0
I
10
10
I
u
'
II
18
GRID
S£L.£CTCft
~'""~'"''
17
I
3
••
I
I
•
,,
y10.o
I
I
0
I
I
I
I
I
ZD401
Q413
IC404
0428
Z0405
I
10408
HZ7A
2SC2021RS
,uPD550C062
I
S2473
RO
5 I E B
-iZ-
GB
/
> > >
X'>
<
> <
<
<'")
R451
I
LEVEL
SWITCHING
FLUORESCENT
LEVEL
VOLT.
STAB.
(QLT.
STAB
>
>
I
SHIFT
I
FOR
RESET>
DISPLAY CONTROL
SHIFT
\
I
I '
R~,3
68K
.11
7 RESISTOR BLOCk
R452
681<
11
7 RESISTOR
BLOCK
-19
-
)-E99
I
IC PIN FUNCTION TABLE
1.
IC401
(HD44801
A35
for
mechanism/
ATRS control)
Pin
I
No.
Pin
Symbol
Function •
1
BIAS
• Control output pin to operate the
bias
oscillation circuit. Outputs
Lo
potential normally
and Hi potential
in
the
REC
mode
and
the REC-PAUSE mode after recording.
Outputs
after elapse
of
the
inhibit
time
of
120
ms
when the mode is changed from STOP, PLAY
or
PAUSE,
and
outputs after elapse of the inhibit time
of
820
ms
when the mode is changed
from
FF
or
REW.
2
TAPE SELECT
1
• Tape select switch (S2) position detection input pin.
Detects the tape
select switch
3
TAPE SELECT 2
position according
to the truth table shown below and changes over the
output
data.
I
~n
NORMAL
FeCr
Cr02
METAL
I
s
Pin(V
0 1 0
1
Pin@
I
0
0
1 1
4
TEST START • ATRS test start detection input pin. Inputs Hi potential normally
and
inputs
Lo
potential
by
the button operation
in
the
REC,
REC-PAUSE
or
REC-HOLD mode, to detect the
ATRS test start. The
ATRS
test starts actually when the input is detected during the
REC
or REC-PAUSE mode.
• Outputs
Lo
potential when executing the ATRS
test
and
outputs Hi potential normally.
5 TEST INDI.
·
Test indicator drive
output
pin. Outputs Lo potential normally
and
outputs
the flashing
pulse with
1.28
sec. period when executing the
ATRS
test. When error occurs during
(
the ATRS test, the flashing pulse with
160
ms period is
output
as
error indication.
This error indication continues
until the play button
or
pause button
key
input is given.
l I I
I
J1IU1illlJ1JUUl
!
I
I
-H
~-Borns
I
--1
640ms
r-
1
i
1.28s
I
--i
f---160nis
••
6
AFOSC
• AF signal oscillator control
output
pin.
Outputs Hi potential until ATRS test
starts
when
(1
kHz/12 kHz)
I
power
is
ON,
and
outputs
Lo
potential
when
recording the
12
kHz
signal during execution
I
of
the ATRS test. It is set to the
Lo
potential
output
mode after A TRS test is completed.
"-
7
A/D
COMP.
i
·
A/D
comparator output input pin.
I
Detects the inversion
output
(fall signal from
Hi to
Lo
potential)
of
the
A/D
comparator
during execution
of
the
ATRS
test.
---
8
A/D
RESET
•
A/D
comparator circuit reset control output pin.
Outputs
Lo
potential
in
other
modes
than the ATRS operation,
and
outputs
Hi potential
with
80
ms
width
for
approx. 3
sec.
after power is supplied
or
just
after scanning the
A/D
comparison reference voltage during execution
of
the ATRS test to reset the
test
sample
hold.
9
A/D
SELECT
I
·
A/D
comparison circuit input (play output signal) channel select control
output
pin.
When
Hi
potential
is
output : R channel
When
Lo
potential
is
output : L channel
- 20 -
D-E99
Pin
Pin
Symbol
Function
No .
•
10
LINE MUTE • LINE amp final stage muting control
output
pin.
Outputs
Hi potential during
REC,
PLAY
and
REC-PAUSE
after recording
to
mute the
play signal
of
the LINE amp output.
Hi potential is
output
after
elapse
of
the
inhibit
time
of
120
ms during play, after elapse
of
the
inhibit
time
of
400
ms during record and
after
elapse
of
the
inhibit
time
of
1100
ms
when changing the mode from
FF
or
REW.
11
REW
SOL.
REW solenoid drive
output
pin.
Outputs
Lo
potential normally and Hi potential during
REC,
PLAY
and
REW.
--
-
-----------
12
FF
SOL.
FF
solenoid drive
output
pin.
Outputs
Lo
potential normally
and
outputs
Hi potential
I
during REC,
PLAY
and
FF.
'
13
PAUSE SOL.
i
· PAUSE solenoid drive
output
pin. Outputs·
Lo
potential normally and
outputs
Hi potential
I
during REC-PAUSE mode and
PLAY-PAUSE
mode.
I
-·---------------------~
•
14
NC
· Blank pin.
--------·---
15
RESET
I
· Initial reset
input pin.
This
pin input is set
to
Hi potential when power is supplied
to
perform initial resetting.
--
-----~
16
GND
· Connected
to
GND
---
--
--
17
osc 1
· The external resonance
circuit
is coupled
with
these
pins
to
operate the
built-in
clock
•
18
osc 2
oscillation circuit which is the
reference
of
microprocessor
operation. The oscillat1on
frequency is set
to
400 kHz.
-
-------------------·---
19
HALT
·HALT
pin. This pin changes from
Lo
potential
to
Hi
potential when power is supplied
I
and the program
of
the
microprocessor is executed.
It
is
set
to
Lo potential when povier
is set
to
OFF
and the execution
of
the program
stops
and is held.
-~
20
TEST
• Microprocessor test pin. Connected to Vee pin @ because
this
is
not
used.
•
21
Vee
• Power pin. Applies
+5V.
-
22
VCA SELECT 0
•
A TRS IC
(HA
12035)
control
output
pins.
Output
during
REC,
REC-PAUSE
and REC-
I I
HOLD, and designate the object of the
ATRS
IC internal
circuit
to
be
controlled
by
t~e
24
VCA SELECT 2 control data
output
from
the
data
output
pins
.~~~~'·
These
outputs
are composed
Df
the
3-bit
signal.
Output
pins
@
@
®
Designation
function
I
0
i
0
--------
0
Designates
that
data
has
no
meaning.
0
I
0
1
Designates
that
it
is 1 kHz, Leh
data.
--
0
I
1
0
Designates
that
it
is
14
kHz, Leh data.
I
0
I
1
1
Designates
that
it
is
bias
data.
·-----------
1
0
0
Designates
that
14
kHz, R eh
data.
--
1
0
1
Designates
that
it
is 1 kHz, R eh
data.
1 1 0
Designates
that
1t
is
AID
comparison
reference
voltage.
I
1 1
1
Designates
to
clear
all
data.
I
·
Auto/memory
rewind
switch
and timer
switch
position
detection
output
pin.
Outputs
1'1
when detecting switch position.
-
21
-
------.-...--
..
-----------<~----
-----
---~----~-----
-----~~.
Pin
Pin
Symbol
Function
No.
•
25
IC MUTE
• IC muting control
output
pin.
26
DATA
O(LSB)
• ATRS IC
(HA12035) control
output
pins.
The control data is
composed
of
4-bit signal
I
I
and
output
during
REC,
REC-PAUSE and REC-HOLD.
29
DATA
3(MSB)
•
Auto/memory
rewind switch and timer switch position
detection
input
pins. Input the
timer switch position detection signal for 3 sec. after power is supplied,
to
judge the mode.
Input
pins
Criterion
mode
®
I
® ®
®
0
I
0
x x
Test
program
execution
0 0
DATA2
Timer recording
0
1
+ DATA3
1 0
Timer play
= 1
1 1
••
30
REEL PULSE
• Input
pin
of
tape end detection Hall element pulse
output.
When the take-up reel disk
stops rotating, pulse input disappears and tape end is detected
with
pulse
not
input
for
3 sec. or more during
REC
and PLAY, and
for
1 sec. or more
during
REW and
FF.
I
• Tape count
during the memory rewind function operation is done
counting the
input
I
pulses.
---·--------.
31
ATRS
· ATRS mode input pin. Judged as ATRS mode with Lo potential input.
(
32
REC MUTE
•
Auto
REC
MUTE detection
input/output
pin. When Le potential is
input
by
the REC-
MUTE button operation during
outputting
Hi potential (during REC or
REC-PAUSE
mode),
it
is judged
as
auto
REC
MUTE mode and Lo potential is
output
for
approx. 4 sec.
33
PAUSE
· PAUSE mode input pin.
Judged
as
PAUSE mode with Lo potential input.
~---
34
REC
•
REC
mode input pin. Judged
as
REC
mode with Lo potential input.
I
-l
--
--
35
FIXED
· ATRS FIXED
mode input pin. When Lo potential is input,
it
is judged
as
FIXED mode
and
the
REC
control data
output
is changed over from the A TRS data
to
FIXED data.
I
· When the Lo potential is
input
and
it
is judged
as
FIXED mode, Lo potential is
output
to
I
light the FIXED indicator and makes
ATRS
indicator go
off.
-----------~----
36
STOP
·~TOP
mode input pin.
When Lo potential is input,
it
is judged as STOP mode.
-----
-
37
FF
·
FF
mode input pin.
When Lo potential is input,
it
is judged as
FF
mode.
I
38
PLAY
• PLAY mode input pin. When Lo potential is input,
it
is judged as
PLAY
mode.
• When the timer record
or
play is set within 3 sec. after power is supplied,
Lo
potential is
I
output
after approx. 3 sec.
Outputs
Lo potential with approx.
80
ms width simultaneously
I
with the play operation
start
in
the auto rewind play mode.
This Lo
potential is
the
one
action
control signal when the unit is combined with the system component stereo.
I
-
----------~----
39
REW
·
REW
mode input pin.
When
Lo
potential is input,
it
is judged as REW mode.
-
22
-
l
Pin
No.
40
41
42
Pin
Symbol
PLAY INDI.
PAUSE INDI.
REC
INDI.
Function
• PLAY indicator drive
output
pin. Flashing pulse is
output
synchronizing with the reel
pulse
input during
REC
and PLAY. When the time
of
light
gone
off
becomes 500 ms, Hi
potential is
output
regardless
of
presence/absence
of
the reel pulse input.
· Outputs Hi potential during REC-PAUSE
and
PLAY-PAUSE.
· When the
REC
and PLAY buttons are pressed simultaneously within 3 sec after power is
supplied and reset is completed,
or
during the timer recording or play, flashing pulse is
output
with
180
ms period for 3 sec. after resetting, and Hi potential is
output
after
elapse
of
3 sec.
· PAUSE indicator drive
output
pin.
Outputs
Hi potential during REC-PAUSE and
PLAY-
PAUSE.
· Flashing pulse is
output
with 1.3 sec. period during the
AUTO
REC
MUTE,
and
Hi
potential is
output
after
AUTO
REC
MUTE is completed .
.
Flashing pulse is
output
with 160 ms period during the timer
stand-by
mode and the Lo
potential is
output
after the mode is complete.
MUTE button
FF,
REW
button
I Y
Tape
end
(
REC
x.
STOP , REW
FF
:
STOP
I ) : I
I I I \
l.3s
--.J
160ms
4s--~.-l
(AUTO
REC MUTE)
·
REC
indicator drive
output
pin.
Outputs
Hi potential during
REC,
REC-PAUSE
and
REC-HOLD.
· When the
REC
and
PLAY
buttons are pressed simultaneously within 3 sec. after power is
supplied
and
resetting is complete
or
during the timer recording, flashing pulse is
oLtput
with
180
ms
period
for
3 sec. after resetting is completed, and Hi potential is
output
after
3 sec.
-
23
-
u-
c:.
;:::n:1
·E99
2.
IC404
(µPDSSOC
062,
for
counter
with
stopwatch)
Pin
Pin
Symbol
Function
No.
•
1
CLOCK 1
• The external resonance circuit is coupled with these pins
to
operate the built-in clock
oscillation
circuit which is the reference
of
the microprocessor operation,
and
the oscil-
28
CLOCK 0
lation
frequency is set
to
400
kHz.
2
TIMER CLEAR
•
Elapsed
time indication timer (stopwatch indication) zero clear input
pin.
Inputs
Lo
potential normally
and
outputs Hi potential during button operation.
3
a
• Fluorescent display tube plate segment drive output
pins.
The Hi
potential output
l
l
segment is
lit
synchronized with the grid select signal.
9
g
~t
b
d
f
I c o
a
c e
9
0 1 1
1 1 1 1
0
1 0 1
1
0 0
0
0
2
1
1
0 1
1
0
1
a
3
1 1
1 1
0 0 1
4
0
1
1
0 0 1
1
'$t
e c
5
1
0
1 1 0 1
1
6
1 0 1
1 1 1 1
d g
t
7
1 1 1
0 0
0
0
8
1 1 1 1
1 1 1
9
1 1 1 1 0
1 1
-
0 0 0 0 0 0 1
•
10
9
• Fluorescent display tube dynamic drive grid select (for display digit scanning) data output
I
I
pins,
and
the display
of
the Hi potential output digit is lit.
13
5
~
Tape
counter
Elapsed time
16
4
3
rd
2 nd
1
st
10
1
-
10
sec
1
sec
l
I
n
digit
digit
digit
minute
minute
19
1
1(pin@)
0 0 0 0 0 0 0
1
2(pin@)
0
0
0 0 0
0
1
0
3(pin@)
0
0
0 0 0 1 0
0
4 (pin
(i6)
)
0 0 0 0
1
0
0 0
5 (pin
@)
)
0
0
0 1 0 0 0
0
7(pin@)
0 0
1
0 0 0
0 0
B(pin@)
0 1 0 0 0 0 0
0
9 (pin
@)
}
1 0 0 0 0 0 0
0
14
Vss
• Hi side power pin. Applies +
10V.
15
TEST
•
Microprocessor test pin.
Connected to Vss pin because this is not used.
20
NC
·Blank
pin.
21
FF
SOL.
• Mechanism operation (solenoid operation) detection
input pin.
Addition/subtraction
22
REWIND
SOL.
to/from the tape counter or addition
of
the
elapsed
timer is executed
by
inputting, and
displayed to the fluorescent display tube.
- 24 -
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
Page is loading ...
/
