Pioneer PL-V70 User manual

VY) PIONEER’
Service
CIRCUIT DESCRIPTIONS
REPAIR & ADJUSTMENTS ORDER NO.
ARP-759-0
STEREO TURNTABLE
L-V'70 (BK)
PL-LSO (BK)
@ This service manual is applicable to the PL-V70/KU and PL-L90/KU.
@ PL-L90 is the same as the PL-V70 except for exterior design .
CONTENTS
1. SPECIFICATIONS ...............0000 0a 2 B. PACKING 5. scsi e eee ea ea 40
2. FRONT PANEL FACILITIES............... 3 9, P.C. BOARDS CONNECTION DIAGRAM ..... 41
3. BLOCK DIAGRAM ............00c ce eeee 5 10. SCHEMATIC DIAGRAM.............000005 45
4. CIRCUIT DESCRIPTIONS...............5. 7 11, ELECTRICAL PARTS LIST... ........004- 47
5. DISASSEMBLY .......... 0.00000 eee 32 12. ADJUSTMENT ......... ce eee eee eens 49
6. PARTS LOCATIONS ..............0000 35 13. TROUBLESHOOTING ............000 cee 53
7. EXPLODED VIEW AND PARTS LIST........ 37
PIONEER ELECTRONIC CORPORATION 34-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS [USA] ING. P.O. Sox 1760, Long Beach, California 90801 U.S.A.
TEL: (B00) 421-1404, (B00} 237-0424
PIONEER
ELECTRONIC
(EUROPE)
N.V.
Keetberglasn
1,2740
Beveren,
Belgium
TEL:
03/775-28:08
PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Soundary Road, Braeside, Victoria 3195, Australia
TEL: [phone]
PIONEER VIDEO, INC. 200 West Grand Ave., Montvale, N.J. 07645, U.S.A. TEL: (B00) 421-1404, (B00) 237-0424
FZ © APR. 1985 Printed in Jar

PL-V70,PL-LSO
1. SPECIFICATIONS
Motor and Turntable
Drive SYSteM .......c.ccesceceeseeecneeseseneraeeeseererseenes Belt-drive
MOtOP suskeioccitdevasesssacecvasrepeees vie eeeresetene DC servo motor
Turntable Platter ...........:cceseseeeeeues aluminum alloy die-cast
SPECS ieee veer edces dendessecisbastedidancssnes nas 33-1/3 and 45 rpm
Wow and Flutter ..............0ee eee e ee Less than 0.05% (WRMS)
+ 0.065% WTD Peak (DIN)
Signal-to-Noise-Ratio .........cccseee More than 70 dB (DIN-B)
(with Pioneer cartridge model PC-291)
Tonearm
TY DO) iseiccvssannstusvssedessioisecessece Integrated straight pipe arm
TYPO costs ceiehscetnaladiedanceccccceasseatenpateceunvestepaoedetes IM type
Stylus sc.csssacteasecvivewseheiteecsssvestes 0.5 mil diamond (PN-291)
Output Voltage ........eccecceseseneeereeeneeeeeeeeeeeeeen ene 2.5mV
(1 kHz, 5cm/s LAT. Peak)
Tracking Force ........ccceeceeeeeeeee ee 1g to 1.5 g (proper 1.25 g)
Frequency RESponse ........:ccseeeeeeseeseseeeeeees 10 to 30,000 Hz
Recommended Load .......ccccceceseseeeeneeeneeanaeeeeeseenes 50 k&
WEIGH .......:cccesesccecscrscnsccsccecncnceecsea seer rsssaseneeeeenes 4g
Subfunctions
Auto lead-in, auto return, auto cut, repeat
Arm elevation, program search play, manual play,
Skip, auto disc size selector, record detection,
Auto speed selector,
Miscellaneous
Power Requirements .......ccsssssesssesssesenens AC 120 V, 60 Hz
Power Consumption .........ccssscesssssscereesceresseveceeeaeeserens 11W
Dimensions ............0se0eeeeees 420 (W) x 104 (H) x 350 (D) mm
16-1/2 (W) x 4-1/8 (H) x 13-3/4 (D) in.
Wight 223 cc. idesseedescdades avibanccnideddeseensaced 7.5 kg/16 lb 8 oz
Accessories
EP(Adapter’ ei eisescosteohe dneeecasacseutsgaacee diac Veadavbecewisindses 1
Remote control COrd .........ccccsceceeescuteceseeseecneeeneseenceaees 1
Remote control plate ...........cccscscececceeeceneeeeeeeseeneeertenaes 1
Operating INStructions ...........cccccsecececeneseeceeeeeeeenneseenee 1
NOTE:
Specifications and design subject to possible modification without
notice, due to improvements.

QUESTIONNAIRE
MODEL
One
Model
per
questionnaire
Dear Servicer,
Thank
you
for
your
cooperation
in
the
post-sale
service
of
Pioneer
products.
This
questionnaire
is
used
as
a
tool
to
improve
the
serviceability
of
our
products
and
service
manuals.
Please
evaluate
this
model
and
service
manual
by
answering
the
following
questions.
Your
ideas
may
be
realized
in
our
future
products.
Your
answers
will
be
appreciated.
Thank
you.
PIONEER
ELECTRONIC
CORP.
T.
Nakagawa,
Manager,
Service
Section,
International
Division
1.
SERVICING
EVALUATION
Circle
applicable
number:
Good
Poor
Fair
1
2 3
*4
0
*5
b.
Circuit
Checks:
1
2 3
*4
#5
1
2
3
*4
*5
d.
Adjustment
(s):
1
D)
3
*
4
*,
*
If
(4)
or
(5)
was
circled,
please
be
specific.

e. Your advice, opinion or ideas related to servicing this product.
2. SERVICE MANUAL EVALUATION
a. Circuit & Mechanism Description
b. Circuit Diagram
3. OTHER
Please describe other areas of servicing which you may find difficult.
Completed by :
Company Name :
Address :
City /State/Zip :
Please send this form filled to the distributor in your country.

2. FRONT PANEL FACILITIES
@ POWER switch/indicator
Press this switch to turn the power on and off.
[ON]
(depressed
position)
:
Power
is
switched
ON.
[STAND-BY]
(released
position)
:
Power
is
switched
OFF.
@) SPEED switch
Set
this
switch
in
accordance
with
the
speed
of
the
record
to
be played.
[AUTO]:
Automatically
sets
rotation
speed
in
accordance
with
the
size
of
the
record:
Rotates
at
33-1/3
rpm
with
30
cm
and
25
cm
records.
Rotates
at
45
rpm
with
17
cm
records.
(33): Rotates at 33-1/3 rpm
(45): Rotates at 45 rpm
@ SENSOR switch
Depending
on
the
type
of
record
being
played,
this
switch
may
be
used
to
adjust
the
sensitivity
at
the
time
of
program-
med play.
Normally
the
switch
should
be
left
in
[NOR]
position.
(NOR]: For normal records.
[HI]
:For
records
with
very
narrow
intervals
between
tracks.
{LO}:
For
records
with
wide
sound-groove
pitch.
@ PROGRAM switches (1 — 8)/ indicators
e
Press
these
switches
in
the
desired
sequence
from
[1]
through
[8]
when
programming
the
order
in
which
the
tracks
are
to
be
played.
The
tracks
are
programmed
in
the
order
in
which
the
switches
are
pressed,
and
auto
play
or
repeat
play
is
performed.
e
The
numbers
[1]
through
[8]
indicate
the
order
of
the
tracks
on
the
record
(for
instance,
the
[2]
switch
cor-
responds
to
the
second
track).
During
programmed
playback,
the
program
indicator
corresponding
to
the
track
presently
being
played
will
flash.
© CLEAR switch
This
switch
is
pressed
in
order
to
clear
the
program.
@® REPEAT switch/indicator
Press
this
switch
so
that
the
indicator
lights
for
repeat
play.
PL-V70,PL-L90
@ ARM ELEVATION switch
(ARM EV)/indicator
Use the switch for manual piay.
Use the switch to suspend record play temporarily.
Use
the
switch
when
changing
the
tracks
during
manual
play.
Indicator lights:
The tonearm rises (the stylus moves away from the
record).
Indicator flashes:
During right or left movement of the tonearm (or during
search for programmed play).
Indicator goes out:
The tonearm descends (the stylus is lowered onto the
record).
LOCATE/SKIP switches
(ARM LOCATE/PROGRAM SKIP)
Use these switches to start manual playback, or during
playback to change the track being played. When the
switches are pressed, the tonearm will move to the right or
left (the arm elevation indicator will flash).
[<, +]: Tonearm moves to left. During programmed play,
moves to the next programmed track. If pressed multiple
times, moves ahead the number of tracks corresponding to
the number of times the switch is pressed.
[>,
—
]:
Tonearm
moves
to
right.
During
programmed
play,
moves
back
to
the
beginning
of
the
track
presently
being
played.
If
pressed
multiple
times,
moves
back
the
number
of
tracks
corresponding
to
the
number
of
times
the
switch
is
pressed.
NOTE:
When pressing these switches two or more times during program-
med play to skip over two or more tracks, do not allow more than
about one second to elapse between each press of the switch.
(ia OS 2
@—E
c
a
‘a
=|
SascSEsEs
==
=r
@ PLAY/STOP switch
Press
this
switch
when
starting
auto
play
or
when
stop-
ping play.
EJECT button
Press when mounting or removing a record. When pressed,
the slide base comes out to the front.
@ Platter
@2) Platter mat
@) Platter shaft
Tonearm
48) Cartridge (PC-291)
EP adapter
This
is
used
when
playing
45
rpm
records
with
a
large
center
hole.
@ Cabinet
Slide base

PL-V70,PL-LSO
3. BLOCK DIAGRAM
Reset circuit
+82 (+5V)
System control IC
Qi
PD6037
Muting circuit
Remote control decode circuit
: 7)_ Xion iz)
DI7
REM OUT
pié
® Pull up (5V)
Key matrix
circuit
Phono motor interface circuit
+Bl (+12V)
PHONO
MOTOR
Ev t
(Drawing rod in)
Ev 2 (Holding rod in)
ARM <
appress (32)
ARM >
+Bi(l2v) +82 (5v)
+Bi(t2v)
Power supply circuit
Q3 M54547P
S| Sse
ere PT
(lav) Tonearm
=: drive motor
oe (11) (w) i“
reverse
|
(5)
river:
(14)
7
X
eae ZN
O D201
AC 120V | e—P = ig
60Hz
BAND SENSOR CIRCUIT
Bi (+!2v) (+5V) B2
;
= sie
Al al
feat |
i
ES
+1av
i ‘
LS 1
al |
A,
=
VR3
Q7(4/4)
H
Gay
2
eel
Nob
ves
ne
VR3:
Band
sensor
Record
_—»
ofaet
ADs
Center
suttace
Sut
sige
S18:
Sensor
sensitivity
‘
edge
of
LED:
NJLI{02EH
record
record
Ptr: PCX-059
Speed selector
+B2(5V)
Tonearm down sensor
Carriage board assembly
Guide bar
V sig
i Mechanism base board
assembly Q201
Tonearm address signal generator circuit
Tonearm drive
motor
Tonearm
down sensor
Tonearm
assembly
Shutter
| VR201
Tracking sensor
gain adjustment

PL-V70,PL-L9O
4. CIRCUIT DESCRIPTIONS
4.1
CIRCUIT
DESCRIPTIONS
as
Q3_M54547P
4.1.1.
Address
Sensor
Circuit
Sram
rin
4
r
1
The
address
sensor
is
located
on
the
mechanism
+H2v
1
base
unit.
It
detects
the
position
of
the
tonearm
and
sends
address
pulses
to
the
control
IC
as
the
tonearm
moves.
The
address
sensor
is
make
up
of
an
internal
Schmitt
trigger
circuit
photo
interrupter
and
a
slit
wheel
which
is
synchronized
with
the
carriage.
The
slit
wheel
spins
when
the
carriage
moves
and
intermittently
cuts
off
light
to
the
photo
interrupter
(Q301)
in
pulses
which
corre-
spond
to
the
carriage
movement.
These
pulses
are
counted
by
the
control
IC,
which
detects
the
distance
the
carriage
moves,
the
tonearm
lowering
Fig.
4-2
Tracking
sensor
circuit
position
and
the
end
of
the
record.
It
also
registers
band
addresses.
The
address
pulses
from
the
photo
interrupter
work
as
follows:
When
the
light
is
cut
off,
the
output
is
‘‘L,”
and
when
the
light
is
not
cut
off
the
output
is
“‘H.”
One
address
signal
pulse
is
ap-
proximately
equivalent
to
0.114
mm
of
tonearm
movement.
Tracking sensor
gain ADJ
Tonearm
drive motor
Sensor
Slit wheel
Fig. 4-1 Address Sensor Circuit
4.1.2
Tracking
Sensor
Circuit
This
circuit
detects
tracking
errors
by
means
of
a
shutter
which
is
synchronized
with
the
tonearm
and
a
photo
interrupter.
The
tracking
sensor
is
made
up
of
a
shutter
synchronized
with
the
tonearm
and
a
photo
interrupter
which
is
mounted
onto
the
carriage
base
board.
When
the
tonearm
lowers
and
begins
tracing
the
record
surface
the
tonearm
tracking
errors
increase
as
the
number
of
rpms
increases.
When
tracking
errors
increase,
the
shutter,
which
is
Liv
—»f——Tracking
center
synchronized
with
the
tonearm,
also
moves
and
the
light
cut-off
rate
of
the
photo
interrupter
changes.
Subsequently,
the
output
of
the
photo
interrupter
changes
and
is
sent
to
the
tonearm
drive
unit
in
the
form
of
tracking
error
signals.
_
Tracking error
3v f---->
Tracking error
Small Large
Fig. 4-3 Detection of tracking errors

L-V70,PL-L90
4.1.3 Band Sensor Circuit
The band sensor circuit detects the size of the
record
and
width
of
bands
by
means
of
a
band
sensor.
It
is
made
up
of
a
band
sensor,
an
amplifier,
a
differencial
amplifier,
a
zero
cross
comparator,
a
band
comparator,
a
30
cm
size
comparator,
an
AC
amplifier, and a search comparator.
The
band
sensor
itself
is
made
up
of
an
array
of
2
phototransistors
(PCX-059)
mounted
into
the
headshell
of
the
tonearm
and
an
infrared
LED
(NJL1102EH).
It
detects,
with
a
light
sensor,
the
different
rates
of
light
reflection
to
determine
the
difference
between
a sound
groove
and
a
plain
band.
The
output
of
the
band
sensor
is
amplified
by
each
of
the
amplifiers
and
applied
to
the
differential
amplifier
to
be
transformed
into
a
waveform
like
that
of
point
C
in
figure
4-5.
From
the
differential
amplifier
output,
the
zero
cross
comparator
detects
a
band
signal
(zero
cross
point),
and
the
band
comparator
detects
signals
whose
potential
is
less
than
Q6
(3/3)
pin
8
as
band
signals.
The output from the band sensor is also applied
to the AC amplifier and the 30 cm size comparator.
When in the search mode with the tonearm up,
the band sensor output is applied through the AC
amplifier (band pass filter configuration) and
the search comparator and transformed into the
waveform shown in F in figure 4-5. This signal is
applied to the control IC to register the plain bands
on the record.
The 30 cm size comparator, on receiving the
amplified output from the band sensor and detect-
ing reflection from the turntable at the 30-cm
lowering position, determines that the record is not
a 30-cm record, and sends the signal shown in G in
figure 4-5 to the control IC.
$18: Changes sensor sensitivity
Record center
Record outside edge
5V
(Output only when tracing)
(Output only when searching)
Turntable center Turntable outside edge
5
oe 3y
Reflection of turntable
at 30cm lowering position : |
Waveform at B
when there is
no record
Waveform at G when
there is no record or
a 17cm record
tv
Fig. 4-5 Waveform at Each Point
+B2(+5v)
ae
a»!
VR3 OP
Offset adjustment _ VN
«— Record ~~
Record Record
center outside ed ge
LED: NJLII02EH
P.Tr: PCX-059
Fig. 4-4 Band Sensor Circuit

4.1.4 Elevation and Tonearm Circuits
The
tonearm
drive
motor
and
EV
solenoid
are
controlled
by
commands
from
the
control
IC
(Q1),
which
also
controls
the
horizontal
and
vertical
movement
of
the
tonearm.
In
addition
to
this,
the
IC
controls
tonearm
tracking
with
the
tracking
sensor
and
tracking
error
signals.
e EV solenoid drive
The
EV
solenoid
drive
uses
a
large
current
at
first
to
draw
the
plunger
inside,
and
thereafter
uses
a
lower
current
for
holding
the
plunger
in.
The
signal
to
draw
the
plunger
inside
comes
from
the
control
IC
(Q1),
passes
through
the
Q2
transistor
array,
and
enters
Q3
pin
7.
This
signal
turns
on
the
Q3
Darlington
transistor,
and
ap-
proximately
170mA
of
current
runs
into
the
collector,
turning
on
the
EV
solenoid
which
draws
the
plunger
inside.
Because
of
this,
the
tonearm
will
drop
slightly.
This
“draw”
signal
from
the
control
IC
lasts
about
1
second.
Next,
the
hold
signal,
which
was
output
at
the
same
time
as
the
draw
signal,
passes
through
the
Q2
transistor
array,
enters
Q3
pin
8
and
turns
on
the
Darlington
transistor.
When
the
draw
signal
ends,
a
current
of
approximately
70mA
drawn
from
pin
9
holds
the
plunger
inside,
which
keeps
the
tonearm
elevation
down
until
the
hold
signal
ends.
Tracking
error
tlev
signal
1V-wfe— Tracking center
/
0/Smatl-+Large
Q3: M54547P
PL-V70,PL-LS0.
@ Tonearm drive
The tonearm drive is controlled by input to Q3
pin 4, pin 5 and pin 15. Their truth values are
shown in Fig. 4-6.
@ Lead-in (iocate-in) <<
Q3 receives locate-in signals from the control IC
(Q1), and with an output of approximately 0V
from Q3 pin 14 (O1) and approximately 11V
from pin 11 (O02), the tonearm motor begins
turning in the lead-in direction.
@ Lead-in (locate-out) >
Q3 receives locate-out signals from the control
IC (Q1), and with an output of approximately 11V
from pin 14 and approximately OV from pin
11, the tonearm motor begins turning in the
lead-out direction.
@ Stop
Q3 receives stop signals from the control IC
(Q1), and with an output of approximately 0V
from both pin 14 and pin 11, stops the tonearm
motor.
@ Tracking
Q3 receives tracking signals from the control IC
(Q1), and between pin 14 and pin 11, outputs an
amplified tracking error signal (amplified by an
internal OP amplifier) and begins turning the
tonearm drive motor in such a way as to correct
the error.
—$— : Pull up resistor
@1®
Tonearm
drive motor
EV SW ON
Vv
ae! a
our
eae
Output
TREE Tonearm
@ operation
Lead-in <
Lead-out >
Pepe t fo
Ll L H L.
H tl L Ll
pepe Ta Pe Te [tome
1 ‘
{Tonearm: Tong rm
‘down jtup
Stop
Fig. 4-6 Elevation and Tonearm Drive Circuit and 1/O
Truth Value Chart

DL-V70,PL-L9O
4.1.5 Key Matrix Circuit
The key matrix circuit reads the digit output
(pins 22 to 25) of the control IC (Q1) from the
Key IN terminal (pins 26 to 29) and distinguishes
different key input signals with the control IC. In
addition to carrying out key input operations, it
lights LEDs with output from pins 17 to 19. Fig.
4-8 shows the output waves produced by switch
matrix input in the following order: REPM SW,
Program SW 7, and EV SW.
S13 (>) ] Si4(S/s)
oe 2 77
al
SO(CLR) J SIO(REP) 2 SIL(<) JSI2(EV)
yo yeh yA a
O18
te
$5 (5) $6 (6) $7(7) $8(8)
yt xt y 3
O17 p p |
Si (1) $2(2) ) $3(3) $4 (4)
ee ae <4 xe
+61
Qi8
@)
Kb) DIO My 011
his #Qis,| ¢Bro)
(yy
&) | 06 go? 08 D9
as 2H) ABDa) FB (3) 4H)
«)
Fig. 4-7 Key Matrix Circuit
Program
Control
SWs
all
OFF
[REP]
sw
on
C7]
sw
on
fev]
sw
on
06037 Po - _-0%% —Po- SW matrix
ea
= ne: sw
= 2 6 apes
11.2 mSEC s 4 5] CUR >|
2.8 mSEC
23 >+—+4
a
wn PER, [YP
17
a sls pyr | LED
19 t 2 3 |
Display LEDs all OFF LEO ON (REP), (].e0 on {reF],(7] [UP}ieo on LED matrix
REP @~ —_—_— ar OY ——qc34“r REP @~ a
or =
@- ——
vw Q@- ———
Fig. 4-8 Output Waveforms Produced by Key input
10

4.1.6
Remote
Control
Decode
Circuit
Remote contro! signal processing feature
@
The
SA-V70
receives
an
infrared
remote
control
ras
signal
from
the
commander,
removes
the
carrier,
and
sends
the
resulting
signal
through
an
1P
remote
control
cord
to
the
REM
IN
terminal
of
the
PL-V70.
Ground line
SA-V70
PL-V70
1P remote control cord
<P
Commander
Fig. 4-9 Connection to REM IN
When a predifined serial signal is input to the
REM IN terminal, the operation dectated by the
key strokes is performed, and the mechanism
and the signal lines are thus controlled.
. Input conditions (Input signal must be without a
carrier)
a. The signal format must conform to that of
uPD6102G. (See figure 4-11.)
b. Only when a custom code (component code;
A8 for the player) specified for the REM IN
temrinal is receiyed, shall the unit respond the
following control codes (instruction codes).
c. Remote control signals can be received
depending on the reception mode (enable/
disable) of the main unit. When both a
remote control key and a main unit key are
pressed at the same time, the main unit key
becomes effective.
Custom code
co|ci|c2z|c3}|c4a|cs os [7 |
(A3)
(fi
fofofof:ifo]t
|
Data code
Oo
PL-V70,PL-LSO
2. Input processing
a. The trailing edge of the input signal at the
REM IN terminal is detected.
b. The duration of the leader code (‘‘L” level)
determines the validity of the leader code.
(Approximately 12.3 msec)
c. The states (“1” or “0”) of the custom and
data codes are determined by the width of the
data pulses. (0: approx. 1.02 msec; 1: approx.
2.05 msec)
. Control processing
a. When the remote control signal is valid, the
unit enters one of the 15 control modes
described in figure 4-12.
b. The remote control operation must be exactly
the same as the operation instructed via the
unit’s keys.
c. Even while the remote operation proceeds,
the unit shall keep checking whether the
signal is still received at the REM IN terminal.
If the signal ceases for 100 msec or more, the
unit shall go into the standby mode in which
it waits for another remote control signal.
d. If the first data in the remote conirol signal is
invalid, a second data is observed. If the
second data is valid, it is used for remote
control.
e. If the second data is also invalid, a third data
is observed ... and so forth.
f. If valid data are received successively, control
codes corresponding to the dataare output
successively.
Logical format
. The states ( 1" or ‘‘0"| of the custom
0:
J 1h and data codes are determ ined by the
rt SLI width of the data pulses.
Control mode
Notes (HEX code)
012
o
Fig. 4-10 Remote Control Signal Codes

PL-V70,PL-L90
@ Format
ILL EH
DATA CODE
8 BITS
8.2mS_ |4.1mS
CUSTOM CODE
8 BITS
CUSTOM CODE
8 BITS
DATA CODE
8 BITS
LEADER CODE
wi
H 8.2mS 4.1ms 0.51mS
eae
——
ee
2.05mS
[e} ° 1 1 t ° 1 ie}
8.0yS
23.9yS
8.2mS or 0.5imS
fe = tfosce/12 = 42 kHz
@ Data structure
LEADER CODE CUSTOM CODE CUSTOM CODE DATA CODE DATA CODE
Fig. 4-11 Format and Data Structure of the Remote Control Signal
12

PL-V70,PL-L90
The remote control signal is received at the
remote
control
signal
receiver
section
of
the
SA-
V70,
and
sent
through
the
SA-V70’s
internal
wave-
form
shaping
circuit
and
buffer
to
the
REM
IN
terminal
of
the
PL-V70.
The
data
is
then
applied
via
a
protection
circuit
made
up
of
D15
through
D17,
to
pins
7
and
21
of
Q2.
The
input
signal
pattern
at
this
stage
is
as
shown
in
figure
4-11.
This
signal
is
decoded
by
Q2(PDE003)
into
the
logical
format
described
in
figure
4-12
and
output
to
Q1
(PD
6037),
the
system
control
IC.
The
signal
is
sent
for
at
least
96
msec.
If
you
keep
pressing
the
commander key, however, the signal is continu-
ously sent from Q2 until the commander key is
released.
Commander logic of PDE003
input key
—-
10 It 12
——+ |
4.
1
Lr} Epa ee ee ee yp a ep | pe re a Oe ce Qe Os Oe ld Oe Oe Oe eS
Check
Mode
of
the
Remote
Controller
Decoder
Section
This
mode
is
used
to
check
whether
the
decoder
Ae
Aa
Ir
section
of
the
remote
controller
operates
norma:
If
the
PL-V70
is
used
alone,
the
decoder
sectic
petoees
can
be
checked
only
in
this
mode.
1.
Remove
the
casing
from
the
PL-V70.
Fig.
4-12
9.Ground
pin
6
(REM)
of
connector
CN4,
and
turn
the
power
on.
(This
makes
the
remote
signal
receiver
unit
of
the
remote
control
com-
mander unnecessary.)
3.
Every
time
the
REM
IN
(JK1)
terminal
or
REM
OUT
(JK2)
terminal
is
grounded,
the
LEDs
turn
on or off as follows:
Program 1 LED turns on > Program 2 LED
turns on—> Program 3 LED turns on —~
Clear (LED turns off)
Eley cy UTD) Ly SILL] TIryr yer yc ley oye ir ye
rilrijr fry cy cl] cyer] cy cy] ep Tey eye
Q1 PD6037
Remote controller decoder circuit
4)
@)_ XN Ne)
Fig. 4-13 Remote Controller Decoder Circuit
13

L-V70,PL-L90
@ Functions of PDE003 pins
Symbol
Pin
name
Description
Individual output (Valid only when the component
t
Guips code is A3.)
Individual output (Valid onty when the component
t
Outs code is A3.)
“HH” when in
Individual output (Valid only when the component standby mode.
code is A3.}
Output
Individual output (Valid only when the component
code is A3.)
Clock input, pin for external oscillator. Ceramic oscil-
lator, 800kHz.
REM INI Connected to pin 22 (REM IN II), receives remote
control signals.
RESET Initial reset input.
Output DATA LO
DATA L1 Decode data output pin.
Output
DATA
L2
“Hi”
when
in
——$—<—$————|
standby
mode.
DATA L3
Ve [| | Greundes
BE = 3|
DATA HO
| Output | DATA H1 Decode data output pin. eat .
| Output | DATA H2 H” when in
standby mode.
Output DATA H3
Output ANS. LED Output for indicating ‘Data being output”. Standby pooh oe eck
Remote control
signal
Input COMPO I Pin for setting component code. Valid only etiey:
tial reset time.
Valid only at ini-
tial reset time.
DECODE/ | pin for switching decode/check mode. DECODE | CHECK | V2lid only atini-
CHECK tial reset time.
Output |LOCATE(F) Individual output (Valid only when the component code OFF |_ON
is A3.)
Output |LOCATE(F) Individual output (Valid only when the component code re)
is A3.)
fe)
tnput REM IN II Connected to REM In I, receives remote control signals.
COMPO II Pin for setting component code.
ma) a) <
x
> a
Fi “H" when in
FF
FF ON
Output SPEED Individual output (Valid only when the component code FF ON standby mode,
is A3.)
FF ON
Output SIZE ee output (Valid only when the component code
is A3.
Fig. 4-14
N ~
= ~
14

4.2
CONT
ROL
PANEL
EXPLANATION
® KEY SW (Control Switches)
The
control
panel
of
this
player
is
as
shown
in
figure
4-15.
It
performs
the
following
functions:
PLAY
ARM
POWER
33
AUTO4S
REPEAT
LOCATE
/STOP
EJECT
[
)S-00~68"
co
[ee]
ARM EV
Fig. 4-15 KEY location
4.2.1 Power SW (Power Switch)
This
switch
turns
on
the
power,
resets
the
player,
and
returns
the
tonearm
to
the
rest.
(When
the
slide
base
is
opened,
the
unit
resets
and
returns
the
arm
to
the
rest.)
©
The
UP
light
is
on
All
others
are
off.
©
The
phono
motor
is
stationary.
4.2.2 Speed SW (Speed Selector)
Sliding
the
speed
selector
to
either
33
or
45
sets
the
phono
motor
rpms
to
33
or
45
respectively.
If
the
slide
base
is
closed
with
this
switch
in
the
AUTO
position,
and
then
the
unit
is
set
to
fully
automatic
or
program
selection
mode,
the
player
will
select
the
motor
speed
automatically,
based
on
the
size
of
the
record.
Record sized:
80cm 3331/3 rpm
25cm 3331/3 rpm
17cm 45 rpm
If
you
use
the
locate
switch
to
play
records
manually
(without
using
the
automatic
or
program
selection
functions),
the
turntable
will
play
all
records
at
33
1/3
rpm
while
the
speed
selector
is
in
the
AUTO
position.
If
the
slide
base
is
opened
after
the
size
has
been
set,
the
rpm
setting
will
be
reset
to
33
1/3
rpm.
(If
the
speed
selector
is
set
to
83
or
45,
however,
the
rpm
setting
will
not
change
even
when
the
slide
base
is
closed.)
4.2.3
1
—
8
SW
(Program
Selection
Switches)
@
These
are
pressed
for
program
selection.
@
Selection
repeat
(up
to
8
times)
and
program-
ming
(up
to
15
steps)
are
possible).
@
Pressing
any
of
the
buttons
1
through
8
will
cause
the
tonearm
to
begin
to
search.
It
will
move
from
the
rest
to
the
end
of
the
record.
When
it
has
finished,
the
LED
display
will
begin
to
blink,
and
the
tonearm
will
proceed
to
the
first
selection
on
the
program.
However,
if
the
tonearm
has
already
searched
after
the
slide
base
is
closed,
then
the
LED
display
will
start
blink-
PL-V70,PL-LSO
ing without an additional search taking place. It
will proceed directly to the first selection on the
program. (If the slide base is opened, however,
that search data will be cleard.)
@ It is possible to add more selections to the
program at any time. (Regardless of whether the
tonearm is leading-in tracing or searching.)
Moreover, when the selections have finished, or
when the tonearm is returned with the S/S
switch or the CLR switch, it is possible to
reprogram selections even with the slide base
out. The tonearm will return to the rest. And if
the slide base is in position, the unit will begin
to lead in or search.
@ Reprogramming is not possible during fully
automatic selection playing.
4.2.4 CLR SW (Clear Switch)
@ Pressing this button clears all previously program-
med selections.
@ It can be used at any time. Like theS/S switch,
the CLR switch interrupts the program that is
being played. (The tonearm will return to the
rest.
4.2.5 REP SW (Repeat Switch)
@ This switch is used to repeat (or stop repeating)
a selection.
@ A selection may be repeated up to 1 maximum
of 8 times. (During both program sedection and
fully automatic selection playing.) The LED
display will start blinking when the weight
repeat has been programmed.
@ It can can be used at any time. (It turns ON or
OFF with each press of the button) When the
unit receives a “REP ON” comman¢ after it has
finished playing a selection, or when thetonearm
is returning after pressing the S/S switch, it will
interpret this to mean that it should repeat
starting with the next selection. Whe the ‘“REP
ON” command is made (except when the
tonearm is on the rest) the player wil first finish
playing the entire side (when on automatic) or
complete the entire program (when on program),
return to the rest, and then lead in again.
4.2.6 EV SW (Cueing Switch)
@ This switch raises and lowers the tonaym.
@ The cueing switch will respond when th etonearm
is all the way UP or tracing (all the way down,
or moving down). When it is all the way up, it
will respond to a down command, ani when it is
tracing, or moving down, it will repond to an
up command. It won’t respond to cummands at
any other time.
15

L-v70,PL-L90
4.2.7 P/S SW (PLAY/STOP Switch)
@ This switch is used to begin automatic playing
and to end automatic or programmed playing.
@ It can be used at any time.
When the slide base is open:
If the tonearm is on the rest, automatic playing
will begin.
When the slide base is closed:
When the tonearm is not on the rest, playing will
stop and any repeat commands will be cleared.
The tonearm will then return to the rest.
All programming and repeat commands will be
cleared.
4.2.8 << , => SW
This switch has two separate functions
1. Function 1... Locate.
During automatic playing (when the tonearm is
on the rest and the player is started using the S/S
SW) and during manual playing (when the tonearm
is on the rest and the player is started using the
SW), this switch performs a locate function.
<SW ON... The tonearm will move toward the
center of the record.
>SW ON ... The tonearm will move toward the
outside edge of the record.
2. Function 2... Skip
During programmed playing (when the player is
started using the program SW), this switch performs
a skip function.
< SW (+SKIP) .. . Player stops playing present
selection and goes on to the next. It will skip one
selection for each time it is pushed.
>SW (—SKIP) . . . When pressed once it will
return to the beginning of the present selection. If
pressed N times, then it will go back N — 1 selec-
tions.
oa
Example: G]—2]—@1—E]—-@J—-&) When programmed to play selections 1, 2, 4, 5, 7, 8
: —
Now playing
Record surface
Three
times
With +SKIP button pressed
Selection 8 | Selection 7|Selection 6|Selection 5
=>
With —SKIP button pressed
Three
Selection 4)Selection 3] Selection 2| Selection 1
Fig. 4-16
4.3 MODE TRANSITION
4.3.1 Initial Reset
STOP
STATUS
Power ON
+B: SV generated
+B, :12Vgenerated
Phono
motor is
stationary
The tonearm
returns to
the rest
Initial reset
complete
Fig. 4-17
16

4.3.2 Mode Transition Chart 1
®@ When using automatic playing (no standby input)
POWER ON
Initial reset
REP SW can be used at any
time
_ __]| Tonearm is
__. | Locate switch or
See
P/S
switch
in
ON
center of record
f
SENT AED SS — — ~~ -_] Tonearm moves toward
Is record & Size detection takes place
on turntable? ™ (whether there is a record or
| not), and when there is a
tats a eas | Weta ete ee record, the tonearm lowers
onto the record surface ap-
I proximately 7mm beyond the
7 first selection.
the tonearm
come down on the
record-center side
of the groove?
The tonearm moves toward
the outside edge of the record.
Did
the tonearm
come down in the
proper place?
Fig. 4-18-1
17
PL-V70,PL-L90
®
y
Oo} @
Down trace mode (c)
Playing selection
No
Locate SW ON
Yes
—
as
End of record?
Yes
Noe“1 ocate SW ON
2 Locate SW ON
Yes
No
Yes
s A
REP clear
Yes
Me ae Ee cg ey pa is Tonearm Up return
to rest
Did thé
tonearm reach
the rest?
When the tonearm is returning and REP ON is commanded with the
-eoor ee REP SW, the unit won't restart. The repeat operation will end after
a maximum of 8 times.
Is the
REP SW ON?
Fig. 4-18-2
18

PL-V70,PL-L9O
4.3.3 Mode Transition Chart 2
@ Using programmed playing (no standby input)
REP SW can be used at any time
The tonearm is
on the rest
No Locate or
P/S SW ON
No n~o@ Yes
SW
ON
——-—|-—-
—-—-——
-
Program
SW
ON
Yes @
Fully automatic
Manual
No Search alread
completed?
yp .————-
a ae
Se
Yes
The tonearm begins searching when the
program SWs (1 through 8) have been
pushed. The search is completed at a
level close to the surface of the record.
-———-———-
Record surface
proximity (about ¢112mm)
Close to
the end of the
record?
Yes
No
Is there a record?
Yes
in
Bg
The
tonearm
moves
Se
11
et
Br
Ss
Bek
(3
a)
ee
FS
ea
toward
the
outside
edge
of
the
record
and
goes
beyond the specified
selection by about 7mm
Specified selection
——_ =
Is the tone- :
arm beyond the No je + 7m
specified selection?
|
The tonearm toward
the center of the record
to the specified selec-
tion.
Specified selection
-—>
Did the tone-
arm arrive at the
sepeficied
selection?,
No
Fig. 4-19-1
19
<~©
|
a
Specified
No b Spar
selection finished?
End of record?
Yes
Is next
selection closer
to record edge?
oS a
Did the |
tonearm arrive
at the rest?
a maximum of 8 times.
Fig. 4-19-2
20
Ae
ee
1
through
ts
there
_
8
clear
another
Ske
program?
a
“N
The tonearm lowers and detects
the specified selection band cen-
ter.
Muting is ON
Band
input |
Zero
cross To +a
“ Finish playing
~ specified selection
“---| and go to next
selection
Or return
When the tonearm is returning and REP ON is commanded with the
REP SW, the unit won't restart. The repeat operation will end after

44 OPERATION MODE EXPLANATIONS
4.4.1 Power ON
When the power is turned on or the cover is
opened, the PL-V70 performs the following opera-
tions.
1. It returns the tonearm to the rest.
2.It turns off the program display (1 through 8)
and the REP display LEDs and turns on the UP
display LED.
3. It stops the phono motor rotation.
4, It turns the muting on.
Note:
In case of PL-V70, the UP LED blinks while the
arm is moving.
4.4.2 Rest Mode
With the PL-V70 on and awaiting input, all of
the functions work with the exception of the EV
SW. During the rest mode, the buttons, when
pushed, perform the following functions.
1. SWs 1 through 8
Pushing any of these will start the search mode.
When searching has already been completed the
lead-in mode will begin.
2. REP SW
This turns the repeat function ON and OFF
alternately.
3.<< SW
This turns the turntable and moves the tonearm
toward the record center. With manual playing,
it works as a locate SW.
.P/S SW
This starts the lead-in operation during auto-
matic playing. (The turntable rotates and player
switches to lead-in mode) ’
=
4.4.3 Search Mode
fos]
ee aR
It does the following while moving the tonearm
from the rest to the center of the record.
1. It determines the size of the record. (And the
speed as well)
9. It records the band address.
3. It detects programmed selection.
PL-V70,PL-L9O0
When the speed SW is set to AUTO, the speed
for 30cm and 25cm records is 33rpm. When the
search mode detects a 17cm record, then it sets the
speed to 45rpm. However, at this point, the
turntable is not yet spinning.
When the tonearm gets to the 17cm size area
and detects no record, it then clears the program
and repeat(s) (if any) and returns to the rest.
(Switches to return mode.)
When the tonearm comes to the end of a record
and it has programmed selection number that is
higher than the actual number of record selections,
it clears those numbers from its memory and
begins the lead-out operation. (Switches to lead-out’
mode) For example, if the number of actual
selections are programmed, then the numbers
above 6 are cleared from the memory.
In the search mode, all functions work with the
exception of EV, << , —>SWs.
1. SWs 1 through 8
Repeat input is possible, and up to 15 steps can
be programmed into the PL-V70.
2. CLR SW
It clears everything in the memory and the
search operation will continue.
38. REP SW
It turns the repeat ON and OFF alternately.
4.P/SSW
It clears programmed selections and/or repeats
and starts the return operation. (Switches to
return mode.)
4.4.4 Lead-Out Mode
@ During automatic playing
This moves the tonearm toward the outside edge
of the record until it addresses the first selection.
Then it stops moving the tonearm, and starts to
move it DOWN. (Switches to down trace mode.)

PL-V70,PL-L90
@ During programmed selection playing
If the EV is DOWN, then it brings the tonearm
UP and moves it toward the outside edge of the
record. However, depending on whether it is
pushed during the first selection of a program or
after that, the operations change.
1. When pushed during the first selection of a
program. It moves the tonearm to the address of
the first selection, and thereafter operates as
with automatic selection playing.
2. When pushed during subsequent selections of a
program. It moves the tonearm back 64 address
units from the selection address (approximately
7.8mm toward the outside edge of the record)
where it changes direction and begins the lead-in
operation. (Switches to lead-in mode.)
In the lead-out mode the REP and S/S SWs
work, but the other functions, program SWs (1
through 8) and the CLR only work during program-
med selection playing.
1.[REP|Sw
This turns the repeat ON and OFF alternately.
2.[P/S|Sw
This clears any programming and/or repeat(s)
and starts the retung operation. (Switches to the
return mode.)
3. SWs[1|through[8]
These permit repeating the same selection and
the addition of more programming (up to 15
steps) during programmed selection playing.
4.[CLR|SW
This clears programming. After that, it switches
to automatic playing. (It starts leading out to
the first selection)
4.4.5 Lead-In Mode
G——
Sk
® During fully automatic playing
If the size of the record has not yet been deter-
mined, the tonearm does this while moving to the
address of the first selection +64 address units,
(approximately 7.3mm closer to the center of the
record). These is changes direction and begins to
lead out. (Switches to lead-out mode.)
®@ During programmed selection playjng
This mode moves the tonearm toward the center
of the record. Depending on whether the button is
pushed during the first selection of a program or
duing subsequent selections, the operations change
as follows.
22
1. When pushed during the first selection of a
program. It moves the tonearm to the address of
the first selection +64 address units (approxi-
mately 7.8mm toward the center of the record),
changes direction, and starts to lead out. (Switch-
es to lead-out mode.)
2. When pushed during subsequent selections of a
program. It moves the tonearm toward the
center of the record, to the programmed selection
address —16 address units (approximately
1.8mm toward the outside edge of the record),
where it begins detecting the band.
While moving the tonearm toward the center of
the record it detects a trailing signal ( Y_ )as
shown in figure 4-20, The tonearm stops when it
has detected the signal, and then lowers. (Switch-
es to pre-down mode.)
When the tonearm doesn’t detect a band even
after going to the programmed selection address
+16 address units (about 1.8mm closer to the
center than the band) then it begins leading out.
(Switches to lead-out mode.)
When the tonearm has not detected the selection
band after repeating the lead-in/lead-out sequence
4 times it goes on to the next programmed
selection.
Tonearm
=a
Lead in
Band signal
Band
differential
output
‘
t
'
Record : :
QWIVPLLPPLT VP IVI IS
suface
Band
Fig. 4-20
In the lead in mode, as with the lead out mode,
the REP and P/S switches work, but the ohher
functions, program switches (Gi) through (8) and the
CLR only work during programmed selecion
playing. The operations performed after the
commands are received are the same as with the
lead out mode.