Pioneer PL-7 User manual

Service
PMALEVINIED
REPAIR
&
ADJUSTMENTS
ORDER
NO.
ART-701-0
STEREO TURNTABLE
L=— 7
PL-720
MODEL PL-7 COMES IN SEVEN VERSIONS DISTINGUISHED AS FOLLOWS:
Voltage Remarks
120V only U.S.A. model (Without cartridge)
120V only Canada model (Without cartridge)
220V — 240V Europe model
220V — 240V United Kingdom model
220V — 240V Oceania model
110V—120V/220V—240V (Switchable) General export model
110V-120V/220V—240V (Switchable) U.S. military model
MODEL
PL-720(which
is
minor
change
in
design
from
PL-7)
COME
IN
FIVE
VERSIONS
DISTINGUISHED
AS FOLLOWS:
Voltage Remarks
220V — 240V Europe model
220V — 240V United kingdom model
220V — 240V Oceania model (Without dust cover)
110V—1 20V/220V—240V (Switchable) General export model (Without dust cover)
110V—1 20V/220V—240V (Switchable) U.S. military model (Without dust cover)
a This is the service manual for model PL-7/KUT. For servicing of the other types,
please refer to the additional service manual.
= Ce manuel d’instruction se refére au mode de réglage, en francais.
= Este manual de servicio trata del método de ajuste escrito en espafiol.
PIONEER ELECTRONIC CORPORATION
FU ©APR. 1981 Printed in Japan

= For the circuit and mechanism descriptions, please refer to the supplement of model PL-7 service manual
(ART-768).
CONTENTS
1. SPECIFICATIONS .............. 00000 2
2. FRONT PANEL FACILITIES. ............. 3
3. DISASSEMBLY .. 1... ee ee ee eee 4
4, TROUBLESHOOTING..............5008- 7
5, PRECAUTIONS FOR REASSEMBLY........ 15
6. ELECTRICAL PARTS LIST.............. 18
7, BLOCK DIAGRAM...............-400- 20
1. SPECIFICATIONS
Motor and Turntable
DriVE SYSTEM <5 eles: na see Dee ee ka ee a oS Direct-drive
MOTOR 22 oie! edit ancivtenas st tl end tern aca, Serb Deteda, Quartz PLL Hall motor
Turntable Platter ......... 310mm diam. aluminum alloy die-cast
SPOOUS? os ei isende s seect scat a8 a ered teestcayh RE aye a ele a 33-1/3 and 45rpm
Wow and Flutter ..............2.05. Less than 0.025% (WRMS)
Signal-to-Noise Ratio................ More than 78dB (DIN-B)
(with Pioneer cartridge model PC-3MC)
Tonearm
TYPO sx esiyt Ma vedle hie laee Static-balance type, Straight pipe arm
Effective Arm Length. .......... 0.002000 eee ee ee eee 221mm
OVErHANG Seidink onto aces Sa ee she ahha ehotaw ele 15.5mm
Usable Cartridge Weight................ 3g (min.) to 8g (max.)
Subfunctions
Full auto mechanism, Anti-skating force control, Stylus pressure
direct-readout counterweight, Cueing device, Strobe light, Free stop
hinges
8. P.C. BOARDS CONNECTION DIAGRAM .... 21
9. SCHEMATIC DIAGRAM ................ 23
10. EXPLODED VIEWS ................40. 25
11. ADJUSTMENTS. ......... 0.00000 eee 30
REGIAGE. oF cco hes eina bdo 32
AJUS TE: ccs he eee te is oa ee walter ae 3 34
Miscellaneous
Power Requirements... ......2.0 2 2 peewee AC120V, 60Hz
Power Consumption .............000 000000 be ee Sw
Dimensions .............. 420(W) X 108(H) xX 367(D)mm
16-1/2(W) X 4-1/4(H) X 14-7/16(D)in.
Weight: 04) gcse a Pie eee Ba aes 5.9kg/13 tb
Accessories
EP Adapter: 3.25023 ssn Aiea fae es aa 2 ad POE per et 1
Operating Instructions... .. . ee 1
NOTE:
Specifications and design subject to possible modification without
notice, due to improvements.

2. FRONT PANEL FACILITIES
() START/STOP switch
Depress
this
switch
when
starting
auto
play
or
when
stopping play.
2) REPEAT switch
Set this switch for repeat play.
8) DISC SIZE switch
Set this switch in accordance with the size of the record
which is to be played.
[7’’ 17] (released position):
({12’’ 30] (depressed position) :
(4) Quartz lock indicator
This lights when the platter is rotating at exactly 33-1/3
or 45 revolutions per minute.
(6) SPEED switch
Set this switch in accordance with the speed of the re-
cord which is to be played.
[33] (depressed position): For 33-1/3 rpm records
[45]
(released
position):
For
45
rpm
records
(6) Cartridge
For 17 cm EPs
For 30 cm LPs
(7) Headshell
(8) Tonearm
©SSe O98
@)ARM ELEVATION lever
Operate this lever when starting manual play or when
temporarily suspending play.
ANTI-SKATE control
This is rotated when performing the anti-skating adjust-
ment.
(1) Arm rest
This serves to hold and clamp the tonearm, When
moving the tonearm, release the clamp.
(2 Tracking force adjustment weight
This is used when adjusting the tracking force.
(3) Platter
(4 Platter mounting shaft
(15) Rubber mat
(6) EP adapter
This is used when playing records without a ‘‘middle.”’
(7) Cabinet
Dust cover

3. DISASSEMBLY
3.1 PANEL AND BASE
In removing the panel, follow the below listed
steps in the order given. Using any unnecessary
force will result in bending the springs or damaging
other parts.
Panel removal steps
1. Remove the headshell and weight assembly,
and the weight shaft assembly.
The weight shaft assembly is removed by
loosening screw (hexagone socket screw) and
the headshell by loosening screw @.
2. Lift off the turntable platter.
Turntable
platter
Dust cover
3. Loosen insulator attachment screws @ and
remove the insulator. (Do not mix the color-
coded float springs. They must be replaced
with their original insulators during reassemb-
ly.)
. Set the record size selector switch to ‘‘380cm’’.
. Release the arm clamp and move the tonearm
as far as it will go toward the center. Then
rotate the motor center shaft clockwise return-
ning the tonearm to the arm rest. Stop the
center shaft.
6. Remove the rear panel PU cord strain relief.
Weight assembly
Weight shaft ©
assembly
3
a Rubber bush
AA.
~ Tonearm
section
Ground wire
ise Insulator
Le
Fig. 3-1 Disassembly

7. Unplug the 2P, 2P and 6P connectors.
8. Completely remove the PU cord from the panel.
9. Lift up the headshell end of the tonearm,
and taking care not to damage the tonearm,
remove it from the panel. (Hold the tonearm
steady.)
3.2 D.D MOTOR ASSEMBLY
After the panel has been removed, loosen the
three motor attachment screws © and remove
the motor.
3.3 TONEARM SECTION
Remove the tonearm section by taking out the
three arm base attachement screws @ and one
ground wire securing screw @.
3.4 CONTROL MECHANISM SECTION
After the tonearm section has been removed,
loosen the three control mechanism attachment
screws @and remove the assembly.
Tonearm
Screwdriver \\\ ~~
3.5 TONEARM
1. Disconnect the tonearm lead wires from the
PU board (See Fig. 3-2).
Note that some of the lead wires have been
soldered to the PU board, and must be discon-
nected with care.
2. Loosen the set screw @ _ with a screwdriver
to remove the PU plate under the arm base
(See Fig. 3-3).
3. Undo the screw @securing the tonearm to the
arm base (See Fig. 3-3).
Tonearm
lead wires
Fig. 3-3 Remove tonearm

3.6 PANEL AND BASE REASSEMBLY
1.Turn the center shaft clockwise so that the
mechanism assembly is set to the reset posi-
tion.
2. Hook the driver lever spring to the panel boss.
3. Lift the forward of the panel and plug in the
2P and 6P connectors.
4. Clamp the tonearm in the arm rest and push
the START/STOP buttom.
Driver lever
Boss ’
| Le |!
t
i
I
h
il
i lever i
Driver te g
spring ‘S) |
wh
0®@
| flee
aL of {A
B tl Inlz
Seno | BLILE
ee
| Ee -
ie
;
5 a y
Fig. 3-4 Spring positioning
. Attach the PU cord stopper.
Attach the insulators. (Make certain the color-
6.
coded float springs are attached to the correct
insulators.)
7. Attach the weight shaft assembly.
Start lever
Fig. 3-5 Positioning the spring

4. TROUBLESHOOTING
Use the following directions to find the cause of
each type of breakdown. Improper adjustment
units should be completely readjusted.
« DOES NOT LEAD IN
Motor does not rotate.
;
™m n
Arm clamp is not released.
YES
Depression in EV rubber sheet.
m
”
Tracking force is too heavy.
YES
Insufficient torque on the lead-in
latch. (See section 1)
PU plate is not properly attached.
=» DOES NOT REPEAT
Repeat switch is not ON.
The start lever unit pin is separated
from the driving lever unit section.
(See section 2)
Control lever SP is weak.
Section 2
As shown in figure 4-2, if the start lever unit
pin is out of line in the direction of @) , repeat will
not operate. If it is too far in the direction of (B) ,
the unit will not start. In these cases, assemble
referring to the method of joining the panel and
bottom panel (lid).
NO Refer to the ‘‘Motor does not rotate’”’
section.
Section 1
As shown in figure 4-1, if the force required
to turn over the lead-in latch is less than 180g at a
point 13mm from the center, band the click leaf
spring toward until the force is 180 — 320g.
Bend
“(180 — 320g)
Click leaf spring
EV cam
Fig. 4-1 Adjustment of lead-in latch with insufficient
torque
Driving lever (B)
Orn Pin
Driving lever spring
Surface Ax
ras ~ '
Control U Start lever unit
base
Fig. 4-2 Misaligned pin of start lever unit

= REPEAT FUNCTION IS REPEATED
Separate the panel section and bottom panel
and, as shown in figure 4-3, apply a tension of
10g to the start lever unit pin in direction(A) If
the repeat function operates, the selector and reset
plate sections are not moving properly. If the unit
stops, the driving lever (B) is not moving properly.
Driving lever (B) is not moving pro-
perly.
Start lever is not moving properly.
YES
Selector is not moving properly.
(See section 3)
—_ 15 @
Sub-panel
Start
lever unit
(A)
A)
Fig. 4-3 Check of repat operation.
Driving lever (B) shaft is bent.
Start lever is warped.
Plastic protrusions on cut surfaces of
the sub-panel of the selector slide
section,
Protrusions on reset plate pressure
pin.
| Reset plate SP is weak.
Section 3
If
there
are
protrusions
remaining
from
the
original-pressing
process
on
surfaces
@,®@),
and
(of
the
sub-panel
which
slides
with
the
selector,
the
movement
of
the
selector
will
be
adversely
affected.
Therefore,
these
protrusions
must
be
removed
(Fig.
4-4).
Section
4
If there are plastic protrusions on the pressure
pin section of section (D) of the reset plate, these
protrusions will come in contact with the lower
surface of the driving panel when the reset plate
moves in direction (E) and the movement of the
reset plate will be adversely affected. Therefore,
these protrusions must be removed (Fig. 4-4).
s AUTO-RETURN DOES NOT WORK
Section 5
After performing the return operation, if the
curved section of the signal plate and curved sect-
ion of the starting plate are not in contact with
surfaces ‘) and respectively of the cam, reset
will be incomplete and the starting position will
be late. As a result, the return function may not
operate at times. In this case, bend the signal
plate C)so that dimension A is 0.5mm or larger.
8B
pas Sub-panel
De
Se
Boot:
REN Reset plate SP
< NO
SQ ~~ Reset
plate
e
Fig. 4-4 Improper movement of selector
Signal plate
j
y
/
Cam
At least 0.5mm
Fig. 4-5 Incomplete reset of starting and signal plates

Change in starting position adjust-
ment.
YES
Starting plate does not follow the NO Too much grease between the signal
signal plate. plate and the cam.
YES
Inner diameter of the starting plate
hole is small.
Protrusions on the caulk section of
the starting plate hole.
Not enough grease between the
starting plate and signal plate.
The curved section of the signal
plate is deformed.
After starting, incomplete reset of the
signal plate. (See section 5)
YES
The inner areas of records can not 7
batracked: Arm lead wire is caught on something.
YES
PU cord is touching the PU plate.
Operator of the detection lever is
not smooth.
Looseness in the PU plate attach-
ment.
# RETURN IS FAST (RETURN AT 1mm PITCH)
Protrusions on the pinion gear section
(See section 6)
Section 6 ks =a Pinion gear
If there are tough areas of plastic protruding @— Protruding
from the (A) section of the protruding section of section
the pinion gear, the return function may operate
at a pitch of only 1mm. In this case, remove the Fig. 4-6 Elimination of pinion
plastic protrusions completely (Fig. 4-6). gear protrusions

= TONEARM DOES NOT LOWER IN CORRECT POSITION
Incorrect adjustment.
YES
PU plate operation is not smooth. PU lever A and PU lever B are not
ore moving smoothly.
E
Location of stylus was changed
during cartridge replacement.
= RECORD SIZE SELECTOR DOES NOT WORK
Tonearm descends at 17cm location when
record size selector is set at 30cm.
Size select SP is warped.
YES
Size select lever does not operate
smoothly.
Tonearm descends at 30cm location when record
size selector is set at 17cm.
Size select return SP is warped.
YES
Select lever does not operate smooth-
ly.
Size select lever is warped.
Plastic protrusions in auto-stop
mechanism resin section of the select
lever sliding surface.
Plastic protrusions on the select lever.
Index cam does not operate smoothly. No Index cam stopped hooked section
has fallen over.
YES
Size select SP is weak.
= MOTOR DOES NOT ROTATE
2P, 2P or 6P connectors are not at-
tached.
YES
Connector(s) is not properly installed.
10

=» WITH THE RECORD SIZE SET AT 17cm, THE TONEARM IS
RETURNED TO THE ARM REST.
Detector lever and signal lever are
touching,
Detector lever is bent.
« AUTO OPERATION REPEATS
Detector lever and leaf spring (start
plate) are touching at the mechanism
stop location.
Leaf spring (start plate) is deformed.
=» MOTOR DOES NOT STOP
Start panel is not moving properly.
YES
The switch lever and switch locker
are not locking (See section 7).
Section 7
In order to turn the power OFF, the PU plate
shaft touches-surface (A) of the switch locker
pushing it over so it locks with the switch lever
turning the microswitch OFF (Fig. 4-7), If
the amount of push on the switch locker is insuf-
ficient, it can not lock with the switch lever.
With the tonearm locked in the arm rest, as shown
in figure 4-8, attach the PU plate precisely mid-
way between the first and second points from the
arm base scale mark counting away from you.
switch lever
Fig. 4-7 Adjustment of switch locker
Arm base
scale mark
Fig. 4-8 Adjustment of PU plate
14

s MOTOR ASSEMBLY
NOTE:
The IC PA2008 used in the PXM-091 does not have a dedicated ground pin for
its internal circuitry, but uses the thermal fan ground. When replacing the IC, make
sure the securing screws retaining the ground line between the IC and thermal
dissipator and between the thermal dissipator and motor base, and base to circuit
board is securely tightened.
e Motor Does not Turn
Is Vec 1 28.8 volts? he er ee ren
YES
Is output of PA2008 term- {NO NO
inal@10—11 volts? PA2008 defective.
Component connected to
PA2008 terminal @ defec-
tive.
YES
Is PA2007 terminal @ less |no| PA2007 pede ae Poor PA2008 Tab terminal
than 3.5 volts? connected pee to GND contact (See note).
YES terminal 4) defective.
Be 00S pennies e PA2008 defective.
over 1.0 volt?
(Refer to Pg. 31)
e Unsteady Rotation
Connect PA2007 terminal
@ and @ to a oscilloscope
and check for phase syn-
chronization.
Adjust VR1 and VR2.
PD1008 defective or X tal
OSC defective.
YES (Refer to Pg. 20)
PA2008 defective.
e Lock Indicator Blinking
Perform the steps in the
above procedure.
Is prescribed waveform
output from PA2007 ter-
minal @?
LED defective or LED
related parts defective.
12

e Motor Runs away
Is Vee 1 28.8 volts?
YES
Is PA2008 terminal @10—
11 volts?
YES
NO
Is FG signal input to TP 1?
YES
Is FG signal input to NO
PA2007 terminal 43?
YES
Is FG signal output from
PA2007 terminal 4 over
1.2V p-p?
NO
YES
Slow down the motor at
about 33 1/3 rpm with a NO
hand, is the prescribed
waveform output from
PA2007 terminal @)?
YES
(Refer
to
Pg.20)
Slow down the motor at
about 338 1/3 rpm with a NO
hand, is the prescribed
waveform output from
PA2007 terminal @)?
YES (Refer to Pg.20)
When the motor is stopped
by hand, is the output |NO
from PA2007 terminal @
less than 3.5 volts?
YES
PA2008 defective.
Power supply circuit de-
fective.
PA2008 defective.
PC pattern open in FG.
C12, RY, C26, C13 defect-
ive or PC pattern open.
PA2007 defective or C10,
R7, R9 defective.
PA2007 defective or C5
defective.
PA2007 defective or C8
defective.
Is the potential between
PA2007 terminal © -€6)
0.5—0.8 volts?
Parts connected to PA2008
terminal @ defective.
PA2007 defective, or C7,
C6 defective, or parts con-
nected between PA2007
terminal ©)—©) defective.
13

e Motor Dead Spot
Hall element defective or
Hall element bias resistor
defective.
When the motor is rotated
by hand, is Hall voltage
(Ha, Hb) generated?
Is Hall voltage DC bias Ha:
19— 20 volts; Hb; 4-6
volts:
With power OFF, is DC
resistance between PA2008
terminals —@. and@-@®
60 ohms?
If resistance is high, coil
wire is open; if resistance
‘is low, PA2008 is defective
or coil is shorted.
R10 defective or printed
circuit open.
With power OFF, is DC
resistance between PA2008
terminals @—@) 3.9 ohms
PA2008 defective.
14
ae

5. PRECAUTIONS FOR REASSEMBLY
Follow these directions and precautions when
reassembling a unit after completing repairs. Be
sure to lubricate as required, make no mistakes
when attaching parts, and avoid all other careless
mistakes that may be the cause of trouble later on.
5.1 AREAS THAT REQUIRE LUBRICATION
NOTE:
Types of lubricants and areas where they are used are
listed in table 1.
Table 1
Type of Oil Areas used
Silicon Oil #100000
(GEM-002)
raising shaft
GYA-008 all other areas
Lubrication points are specified for oils other
than GYA-008. Never use a different type of oil.
e Cam Section
Apply oil to the heart-shaped grooved section
(rear side of the cam) and lock plate sliding section
in order to minimize wear on the sliding section
and the burden on the mechanism.
e Driving Plate Assembly
Decrease the burden on the mechanism and the
wear on the sliding section.
R Sides, top, and bottom surfaces
(sliding section of auto-stop
mechanism)
Sides surface
(sliding section of
auto-stop mechanism)
Top and side
EV cam side surface
(sliding section of elevation cam)
Fig. 5-1 Driving panel assembly section switch locker
section
¢ Switch Locker Section
Apply oil to the switch locker (opening) and
sub-panel base sliding section to decrease the
burden on the mechanism.
When applying oil to the opening (shaft hole),
do not apply any oil 2—8mm from the bottom
surface. If oil is applied 2—3mm within the
bottom surface, it may come out the bottom and
go between the switch lever and sub-panel base
causing the switch lever to operate ineffectively.
Switch locker
Fig. 5-2 Switch locker section
e Selector Section
Apply oil to the surface of the sub-panel base
of the selector sliding section to decrease the
burden on the mechanism and wear on the sliding
section.
Side surface
Sub-panel
Top
surface
Side surfaces
Fig. 5-3 Selector section
@ Reset Plate Section
Apply oil to the sub-panel base (shaft) and
sliding section of the reset plate to decrease the
burden on the mechanism.
Reset plate
Sub-panel base
<—
Apply oil cracon—_ A'S
to shaft section
Fig. 5-4 Reset plate section
e Index Cam Section
Apply oil to the index cam, sub-panel shaft
section, and lower surface of the hooked section
to decrease the burden on the mechanism.
15

Index cam
(aR Spring washer
Lower surface of
S) hooked section
Shaft section
Fig. 5-5 Index cam section
e EV Lever Unit Section
Apply oil to the sliding section of leaf spring
(A) and EV lever unit to decrease the burden on
the mechanism.
Leaf spring (A)
sliding section
EV lever unit
EV lever unit
sliding section
|___ Arm base
Fig. 5-6 EV lever unit section
e Elevation Cam Section
Apply oil to the elevation cam and sliding sec-
tion of the raising shaft to decrease the burden
when operated.
Elevation cam
Fig. 5-7 Elevation cam section
e@
EV
Sheet
Section
Apply
oil
to
the
raising
shaft
and
sliding
section
of
the
bearing
to
assure
stability
in
the
elevation
lowering
speed.
16
Apply all around
at a width of 1mm
Half of the grooved
section
EV sheet assembly
Fig. 5-8 EV sheet section
e Driving Lever (B) Section
Apply oil to the driving lever (B), control base,
and the sliding section of the driving lever shaft to
decrease the burden when operated.
Top surface
Fig. 5-9 Driving lever (B) section 1
Driving lever (B) range of movement
} 7 Drivir g lever (B)
A ee
Start lever unit
Control base
Fig. 5-10 Driving lever (B) section 2
5.2 PRECAUTIONS FOR ATTACHMENT OF
PARTS AND REASSEMBLY
e Reset Plate SP Attachment
As shown in figure 5-11, the reset plate SP
hook is attached by putting the open section on
the sub-panel base side.
Sub-panel
Reset plate SP
Reset plate :
Fig. 5-11 Reset plate SP attachement

e Cam Assembly Attachment
The cam assembly is attached by letting the
lock plate go in the direction A as shown in figure
5-12.
Driving
Sub-panel base
Fig. 5-12 Cam assembly attachment
e Motor Attachment
When installing the motor, set the cam in the
mechanism stop location and verify that the
starting plate section does not protrude be-
yond surface of the cam. If the motor is at-
tached with the starting plate section (B) protrud-
ing, the starting plate may be deformed, the motor
pinion gear may be scratched, and the return
function may be damaged.
Fig. 5-13 Motor attachment
e PU Plate Attachment
Push the PU plate into place so that the PU
plate bearing section touches the revolution shaft
attachment nut. Installation direction is as shown
in figure 5-14.
Fig. 5-14 PU plate attachment
e AS Knob Attachment
When installing the AS knob, put the AS knob
rib against the AS knob revolution control stopper
(attached to the arm base) and affix with the
screw. As the stopper may break, be sure to press
the AS knob down firmly when installing it.
Stopper
A
Bee
Fig. 5-15 AS knob attachment
e Arm Base Attachment
When attaching the arm base section to the
mechanism section, put the mechanism section
switch locker and switch lever in the locked posi-
tion and verify that the tonearm is in the arm rest
location. Also be sure to put the manual elevation
lever in the up position and check that the PU
plate shaft is in the position shown in figure 5-16.
PU plate shaft
Switch
lever
Switch
locker
Fig. 5-16 Arm base attachment
e Start Lever Unit Attachment
Attach the shaft section of the start lever unit
as shown in figure 5-17 so that it comes between
the reset plate and start panel.
Reset plate SP
Selector
Start lever unit shaft
Driving plate
ass’y
Fig. 5-17 Start lever unit attachment
17
e Wiring the Connector
When attaching the wires to the 2P connector
from the microswitch, bend the lead wires from
the connector housing as shown in figure 5-18
before attaching.
Lead wires
Connector
housing
Fig. 5-18 Wiring the connector
6. ELECTRICAL PARTS LIST
NOTES:
e When ordering resistors, first convert resistance values into code form as shown in
the following examples.
Ex. 1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm
and 47k ohm (tolerance is shown by J=5%, and K=10%).
5602. 56 x 10! 561..... RD‘PS BAM J
47kQ 47 x 10° 473..... RD%PS Za J
0.52 5) 1s are oo ee RN2H ORE) K
12 ODO arcs Sisce eb peck eee els asd RSiP (al K
Ex. 2 When there are 3 effective digits (such as in high precision metal film
resistors).
5.62kQ. 562 x 10! 5621 .... RN“SR BERD F
e The 3, mark found on some component parts indicates the importance of the
safety factor of the part. Therefore, when replacing, be sure
identical designation.
e For your Parts Stock Control, the fast moving items are indicated with the
marks ** and *® .
*x%* GENERALLY MOVES FASTER THAN *
This classification shall be adjusted by each distributor because it depends on
model number, temperature, humidity, etc.
POWER SUPPLY ASSEMBLY (XWR-005)
CAPACITOR
Mark Part No. Symbol & Description Mark
4 PCL-036 C1 Capacitor
CONTROL ASSEMBLY (XWM-056)
SWITCH AND SEMICONDUCTORS
Mark
Part
No.
Symbol!
&
Description
*&* PSG-029 $2 Push switch
*&* 2SD985 Q1
*& % =28C1815 Q2 Mark
(2SC945)
* PCX-010 D1
(WLO2)
* W2Z-300 D2
(MZ-300)
CAPACITORS AND RESISTORS
to use parts of
Part No. Symbol & Description
CEA 102M 50L C2
CEA 470M 35L C3
CKDYF 1032 50 c4
CEA 330M 6.3L C6
RS1PF222J R1
RD1/4PM622J R2
RD1/4PM562J R3
LED ASSEMBLY (XWX-061)
Part No. Symbol & Description
* GL-9PR2 D3 LED
18

MOTOR ASSEMBLY (PWM-061)
CAPACITORS
Mark Part No.
CCDCH 330J 50
CKDYF 103Z 50
CCDCH 560J 50
CQMA 123K 50
CKDYF 1042 50
COMA 473K 50
CEA R47P 50
CEA 101P 10
CSZA R22M 35
CEANL R22M 50
CEA 100P 16
CEA 100P 35
CKDYF 2032 50
CEA 010P 50
RESISTORS
Symbol & Description
C1
C2,C4,C10,C23
C3
C5
C6,C7
c8
C15
C12
C16
C14
C24
C18 — C22
C11,C13,C25,C26
C27, C28
NOTE: When ordering resistors, convert the resistance value
into code form, and then rewrite the part no. as before.
Mark Part No.
RD 1/4 PMOOOJ
RN 1/4 PR OOOG
RD 1/2 PS3R9J
* PCP-052
SEMICONDUCTORS
Mark Part No.
*& & PA2007
* & PA2008
* & PD1003
* WZ-050
(RD5.1EB)
OTHERS
Mark Part No.
* PCX-039
%* PSS-003
$D-5049-06A
SD-5046-02A
Symbol & Description
R1,R2,R5—R8,R9,R11—-R15
R3
R10
VR1,VR2 (47k-B)
Symbol & Description
1C4
1C2
1C3
Di
Symbo! & Description
HA,HB Hall element
X'tal
Connector
Connector
19

7. BLOCK DIAGRAM
ROTATIONAL CONTROL
®P-V CONVERTER — CONVERTS REFERENCE PHASE TO
PA2007
VOLTAGE (OC).
FG AMP
LOCK
SF -V CONVERTER — CONVERTS FREQUENCY TO BeSCRIMINATOR
CIRCUIT
VOLTAGE (DC).
MOTOR ORIVE
ROTATIONAL
DIRECTION
INDICATOR
CIRCUIT
vec2 !0V
CONSTANT
VOLTAGE
CIRCUIT
ABSOLUTE
VALUE
AMP
REVERSE
ROTATION
DETECTION
CIRCUIT
POSITIONAL
SIGNAL
FORMATION
4~ PHASE
DRIVE
CIRCUIT
(HALL
SPEED ELEMENT)
DETECTION
PA2008
P-v
CONVERTER
STOP
DISC RMINATOR
CIRCUIT
QUARTZ
LOCK IND
55.5Hz OSCILLATOR/FREQUENCY
PD1003 DIVIDER
X’TAL
6.144 MHz
1/4096
1.4.5.7. 11~ vec2
6,8.10.16 ~GND
AC LINE val
$1
+
POWER SUPPLY ea
eet ee |
fos i
20
U Veco 1
28.8V
[ tc PA2O07 TERMINAL WAVEFORMS
(AT CONSTANT SPECIFIED
(V3 ROTATION }
714
© 5.0
3.6
64
®
5.0
®
© 714
0.86mS
@) 22 18 mS.
1.0
ABOUT ImV rms
(13) ee ee
6.9
Og a=
WAVEFORMS IN (1) THRU @) ARE
PASSED THROUGH BUFFER AMP

_I
8.
A
21
‘ 2 3 : 4 5
P.C.BOARDS CONNECTION DIAGRAM
MOTOR Ass’y(PWM-O61) LED Ass’y
GL-2PR1
; I :
© 133/3rpm 30°
i
ae I!
!
¢3
a A
Di SIRBAIO oH?
(PCX-010) 4/98
40,01..38.0
fo
POWER TRANSFORMER
WHT fo\ A} eo RED
Si: POWER
BRN BS RED
ACI 20V
6OHz
~
POWER SUPPLY Ass’y(A) (XWM-O56)
- Q2
cas
33/63:
28:8:
"Re 6.2K
oy
Ri 2.2K
‘ oe Cw
| WZ-300
*hl2
1000/50
ow
R3 5.6K
Ants
LED Ass’y
(XWX-O6 1)