CDrqoNeerr - s. · PDF fileOPERATING PRINCIPLES CIRCUIT DESCRIPTION ... The stroboscope appears ... Operation button Button unit PAD.OI 1 Knob (SPEED ADJ)

CDrqoNeerr

PL.5iEicl

lIItIIr

MODEL PL-550 COMES IN THREE VERSIONS DISTINGUISHED AS FOLLOWS:

This seruice manual is applicable to the PL-550/5, ST type. Whenrepairing the PL-550/HGT type please see the manual on pages43-48.

Type Voltage Remarks

HGT 22OY and 240V (Switchablel SEMKO (Sweden), NEMKO (Norway),

DEMKO (Denmark) and El (Fin land) approved

model without phono cartridge.

S 1 10V, 120V, 22OV and 240V (Switchablel General export model wi th phono cart r idge

ST 11OV, 120V,22OV and 240V (Switchable) General export model without phono cartridge

CONTENTS1 . SPECTFTCAT |ONS. . . . 4

2 . PANEL FACIL IT IES . . . 5

3 . PARTS LOCATIONS . . . . 7

4 . EXPLODED V IEW 11

5. NOMENCLATURE OF SCREW, WASHERS AND NUT . 16

6. SCHEMATIC DIAGRAMS, P.C. BOARD PATTERNSAND PARTS LIST

6.1 Schematic Diagram 17

6.2 Drive Control Assembly (PWG-008) . . . 19

6.3 Power Supply Assembly (PWR-822) 22

6.4 Positional Detector Assembly (PWX-006) 24

7. PACKING 25

8 . OPERATING PRINCIPLES C IRCUIT DESCRIPTION

8.1 Block Diagram 27

8.2 Motor Operation 29

8.3 Waveforms 36

9 . TROUBLE SHOOTING GUIDE

9.1 Motor Does Not Rotate 37

9.2 Motor Run-away 38

9.3 Motor Alternates Between Forward And Reverse Rotation 39

9.4 Unstable Rotation Near Rated Speed 39

10. ADJUSTMENT PROCEDURES 40

11 . D .D MOTOR EXPLODED V IEW . .

PL-550 Additional Service M'anual Enclosed Herewith

PL-550X/ST differs from PL-550at the point of cabinet appearance;it is black cabinet. Except packing case and cabinet all of compo-nents are same as PL-550.

J

1. SPECIFICATIONSMotor and Turntable SemiconductorsM o t o r . . . . . Q u a r t z P l l H a l l m o t o r l C s . . . 2Turntabfe Plat ter . .324mm diam. a luminum al loy d ie-cast Transis tors gMoment of Iner t ia . . . 340kg.cm2 ( inc luding p lat ter mat) Diodes 1 1Speeds . . 33-113 and 45rpm Hal l e lements 3Speed Control Range . . . . . . !6%oWow and Flutter Less than O.O2|yo (WRMS) AccessoriesSignal-to-Noise Ratio More than 70dB (D|N-B) 45rpm Adaptor . . . . . . l

Overhang gauge . 1Rotational Characteristics Screwdriver 1Bui ld-up Time . . . . . . Wi th in24o" rotat ion at33-1 l3rpm Sub weight lSpeed Deviation . . . Less than 0.003% Cartridge mounting screws (ST, HGT type) . 6Speed vs. Load Character is t ics. . . . Stable up to 120 grams Cart r idge mount ing nuts (ST, HGT type) 2

drag load Cartridge mounting washers (ST, HGT type) 2Speed Drift . . Less than 0.0003% lh at 33-1 l3rpm Operating instructions I _

Less than 0.00004%/degree temp. change at33-1l3rpmMiscel laneous

Tonearm Power Requirements . . . . Ac 110-120-22o-240y 5ol60HzType . Static-balance type, S-shaped pipe arm Power Consumption . . . 5WEffect ive Arm Length . . . . 221mm Dimensions 490(W) x 1S5(H) x 390(D)mmoverhang . . 15 .5mm l9 -s l16 (W) x7 -s116 (H) x l s -3 l s (D ) i n .UsableCart r idgeWeight . 49 (min.) to 14.59 (max.) Weight , t2kgl26tb6oz

(For cartridge weighs over 9.5g, attach the sub weight)Arm Height Adjust Range t5mm

lfLfri"trr"rs and design subject to possibre modification.. without notice, due to improuements.

)uDTUnct lons

Anti-skating force controlLateral balancerStylu s pressure d irect-readout counter weigh tArm height adjusting deviceCueing deviceHeadshel l s tandStrobe lightFree stop hingesInsulator feet

Furnished Cartridge (S type)T y p e . . . . . M o v i n g m a g n e t t y p e P C - 5 5 0 E / l lR e p l a c e m e n t s t y l u s . . . . P N - 5 5 0 E / l lS t y l u s T i p . . . 0 . 3 x 0 . 7 m i l d i a m o n dOutput Vol tage. . . . 3mV (at 1kHz,50mm/s RMS)Tracking Force . 1 .0g to 1.8g (proper 1.5g)Frequency Response 10 to 30,000H2

2. PANEL FACILITIES

HEADSHELL STANDConvenient s tand for s tor ing a spare car t r idge. Al ighheadshel l guide p in wi th s lot of s tand and inser t . Avoidstor ing here i f the headshel l is too large to a l low the dustcover to be closed fully. The 45rpm adaptor can also beplaced here.

45 RPM ADAPTORPlace on center shaft when playing 45 rpm records (withlarge center hole).

STROBE LTGHT---- - ' -- -.- '- '" ' , ,*

Lights to i l luminate st roboscope when POWER/ARMELEVATION lever is set to ON. The st roboscope appearsto become stationary when the Quartz LOCK button isset to ON.

PLATTER MAT COVER ]ARM REST -,- -.- -"^. - - , . -. , , , -.-.1

Supports the tonearm. Gent ly press tonearm in d i rect ionshown by arrow to c lamp. Be sure to c lamp when notp lay ing records.

""'Cf**

@-

PL-E'5cl

QUARTZ LOCK BUTTONQuartz PLL system funct ions when but ton is depressed toON. Plat ter rotat ion becomes precisely locked to thespeed selected by the SPEED but tons.

SPEED ADJ. CONTROLCan be used to increase or decrease the speed with respectto the selected rotat ion. Set Quartz LOCK but ton to OFFand turn th is contro l toward the + d i rect ion to increasespeed (maximum 6%) and toward the - d i rect ion todecrease speed (maxim um 6ok) .

45 RPM SPEED BUTTONPress to play 45 rpm records.

33 RPM SPEED BUTT'ONPress to p lay 33-1 13 rpm records.

POWER/ARM ELEVATTON LEVERCombines power swi tch and tonearm elevat ion swi tch.O F F . .ON-UP

DOWN

Power is cut off.Power is turned on (p lat ter rotates) .When moved from DOWN to this posi-

tion, the tonearm is raised.Tonearm is gent ly lowered.

o

3. PARTSTOP VIEW

LOCATIONS

CabinetPMM-056

Headshell standPNW.O73

PMM-062 (ST typeof PL-550X)

PlatePAN-029

Control panelPXT.O98

Knob (ANTI-SKATE)PAA.O14

Headshell assemblyPXA.630

BOTTOM VIEW

Line voltage selectorPSB-001

Power transformerPTT,O14

D.D. motorPXtV-029

PL-E'5'O

Power transformerPTT.O,I4

.a .?

Power supply assemblyPWR,822

Drive control assemblyPWG.OO8

i i ' , , '

torI

' * l

,t\* |

Neon lampPE L .OI l

4. EXPLODED VIEW

PT4x10

Dust coverPNV-011

Platter mat coverPEC.033

Rubber cushionPNT{08

OCM4x10

PlatterPNR.O31 Screw

PBA-033

l'-.- Strobe unit\- PXT-I74

Plste (B)PNB.064

PlatePAN.O29

?e -i?

d@

PSA4x 10

D.D. motorPXM-029See page 39

Hexagon socket screwM4x25

Neon lampPEL.Ol T

. /Name plate

t -

. - Bottom plate assomblyPXA.133

PART 1 see page 1 1

6 Prax1o

Bottom PlatePNW-096

." 6..." Screw Y

PBA-037 A--.-Z^ScrgtPBA4 <

IAE

le€

@

g//o\g

@ ScrewPBA.O37

NOTE:Part indicated in green type cannot be supplied.

AC power cordPDG-OO4

Hinge assemblyPXA.171

Strain reliefE32.056

RM3.PSA3x8

Line voltage selectorPSB-001

PlatePAM.O41

R M 3 . 1 x 1 3

Plate (B)PNB-064 -ry7 Screw

PB4-034

Plate (A). PNB.063

:'uo,..>< Knob (ANTI-SKATE)PAAO14Control panelPXT{g8

Part 3 see pagePlatePAT.O22

J r CabinetPMM.O66PMM.062 (ST type

.. of PL-550X1

ScrewPBA{37

\

\. CW3.1 x 13

I'-1\...]

Part 2 see page 12PXA-237 (S-type)

I

I.9.g

@

Part 3 s€e page 13ScrewPBA.O37 Foot aisembly

PXA- I 15

ge

PT4x16

TerminalKKC-021 #

I

Strain reliefKNK.244

.6go

PT3x6

PT4xl6

PL-s5Cl

A A

B

c c

D D

4.1 PART 1 NOTE:Parts indicated in green type cannot be supplied.

lk\

$-l.-RU

, P.C. Board holderI r 821-0OB

P.c. Board holder +K N K . 1 8 6 V

l_

Drive control assemblyPWG-008

vv)

Power supply assemblyPWR-822

Power transformerPTT.O14

dPSA4x6

FgU

0

IJ-, Rnuou".. *rtrionflu eee.oar\J ,g

I fl *","'"CJ- rea.ozs

-t--e

//6 1 6

,,-.2<A>-Slr';d:";,<


PXA-237ln assembly

!.Operation button

Button unitPAD.OI 1

Knob (SPEED ADJ)PAA.OO9

SpringPBH.O19

Micros,witchKSF-023

II

l

PSA3x 1 4St€el ball Spring

PBH.O17

Spring

PAD-01 3 (without assemblY)

Push switch (Ouarz LocklPSG-001PBH-018

Variable resistorPCS.O03

FW4

ffiw,l%M icrosi\rr, itc hKSF-023

EW3

@-ewa

B

c

D

A

B

c

D

PL-55Cl


Tonearm assemblyPPD-543

llx";.t"tn' il,il8!B"'ScrewPLA.567

Cartridge mounting screwPBA.9O5

Headshell assemblyPXA-630

Weight assemblyPXA-580

EV assemblyPXA- 165

EV sheet assemblyPXA.O86

Arm restPNW-170

?il

dr tt

v:3x4

Arm rest assembly pT4x16PXA-164

N4

PT4xl6

. - € ,

r A

*g'lm'lu, iffffiTo''-l

l

Washer822.650Nut '

PBN,OO4

AS leverPNW.071

SpringPBH-023

Plate1 PXA-088

Ag

N'*'LeverPNW-07O

Cam un i tPNW.070

g(9 Washer

EW2 PNB-527

PT4x16

A A

B

c

D D

1 5

5. NOMENCLATURE OF SCREW, WASHERS AND NUTThe following symbols stand for screws, washers and nuts as shown in exploded view.

Symbol Dercription Shape

RT Brazier head tapping screw

PT Pan head tapping screw

BT Einding head tapping screw $=CT Countersunk head tapping screw

TTa

Truss head tapping screw

ocr Oval countersunk head tappingscrew F

PM Pan head machine screw

CMCountersunk head machinescrew f==

ocM Oval countersunk headmachine screw CIE

TM Truss head machine screw FBM Binding head machine screw

PSAPan head screw with springlock washer

PSBPan head screw with springlock washer and f lat washer

PSF Pan head screw with f lat washer

Symbol D€scription Shape

EW E type washer P\D

lH

FW Flat washer rdSW Spring lock washer \v TN N u t o F

TJ

WN Washer faced nut @ mITW Internal toothed lock washer A

v

OTW Outernal toothed lock washer tA?.avJ

II

sc Slot ted set screw (Cone point) e -D

S F Slot ted set screw (Flat point) e E}

HSHexagon socket headless setscrew @ @

ocw Oval countersunk head woodscrew

CW Countersunk head wood screw

RW Round head wood screw

EXAMPLE

Symbol

trffi"

TTI

- l e n g t h i n m m ( / )

I diameter in mm ( d )

F W ' 9 0 x l '- r T " - ^ ^ - ; ^ ^ - t a r . _ ' l '

| | I t h i c k n e s s i n m m ( r ) : - i '

I I d iameter in mm (d ) f - J|

:]Symbol

1 6

6.6.1

SCHEMATIC DIAGRAMS, P.C. BOARD PATTERNS ANDSCHEMATIC DIAGRAM

DRtvE C0NTRoL ASST PWG-oo8

Q,.0 ,2Sci3r2 x 2

l 5+ $20v-l t'#' ON

Sroi ,l vRn r l 0 r<o (E )I SPEID FINE I -ONTROt

sy6be POI{ER SUPPLY Ass'/ PwR-822l _ _ - _ _- -

0 , , -0, -

q-6I1 i5Vr::-r 2SC3'l2xz 250234

os P0l00tC-6-02/s0 6.33v i------

#uP0.2/50

- -: c i :

1 a Y Y qI J

Y

t

cr,l-2o0P

Rn39K I lVRr

6

6

9

E

Rr33 Crs 33/25

- - - ' l Rn 3.3K (3Yt)

ERNS AND PARTS LIST

PL-sscl

CAUTIONWhen Handling lC PDl001, Please Observe:IC PD1001 (Qb in the Drive Control Ass'y PWG-008)is a C-MOS IC of extremely low power consumptionand very high input impedance. Unless handled withspecial care, it could be damaged by static electricityinduction. This IC is supplied with a shorting cap (ofaluminum foil) attached. When soldering or perform-ing other repair work, always attach this cap as shownbelow. Remove the cap after the repair has been com-pleted.Also, this type of IC must not be inserted in a poly-st5lrene package for storage.

_l

I

Miscellaneous Parts List

: J W I T O H E S IS r o r : P O W E R O F F - 0 N

Sror : SPEE0 SiELECT0R 33rpm - 45r^prnSros : QUARTZ LOCK OfF - 0N

R I S I S I O R S ;lN t lHM Z+W t5% T0-ERANCE UNLESS 0THERWISEN O T E D K : K S i , I ' 1 : M S L

LAPAT] IT t )R5;IN 1 lF UNLE: IS CITHERWISE NOTED P :PF

r80ZUV

0s, Qr2SC945x2

RED

lurlt l

5.r0\ 2

5.?2l 3

5.$I4

?0rl 5

s23ss0l5.r4

l 8s.0t-rI

N

0s PA200l', J . . - -

- - - . |

A /Y \

d,i iv \jfta (. ib.$.A lr1U^v (

Itu9 (

I

I

L - - - - - -

4 J J . ! 2 3

St1

BRN

PoslTloNAI_ DETECToR ASSTPwx - 006

r0 H c +VLT rf8

9 Gz S H c -

8l K l0'r tr4$,l

o

UPNK ir

) - - ll / n a - l -I a o v l

5 Ep* | "o Rnr

l l T : 6 0#l 0 L c

-| . o R l l

? I

tb RurJ

1 '

i t r(5 JS5 f1g+

Bl il

lL

2

4 . . L a

YEL !I_c 1Tr-l

L._dil

c0

LJ f1A +

WHTr2

2 L rGRN

i r l l)3/2s I I

I h r - IqffiRr33 Cu 33/25

--lt-l l l

3ndcot L

I- "aa{30,,-

uO\ ^

1 Drive control assembly

I Positional detector assembly

I Power supply assemblyI Power transformerI

S10l ] Microswitch (Power)

IVR101 | Var iable resistor

5102 Microswitch {Soeed selector}

5103 Push switch {Ouartz Lock}

PWG.OOSPWX-006PWR.822PTT.OI4

KSF{23KSF-023PSG-OO1

PEL{1 1PSB-001

PCS-003

4

1 8

6.2 DR IVE CONTRO L ASSEIVIBLY (PWG-OO8)

+ l t + + l

O O 6 0 @ OJ I

c l o @ r @ o < f o d

9L/Ln$)

Oz

9

I

-J

t )+{c,

o <),;.n

. t d

Y

@

3

d

c{e,

d r J:4,

o c .

I6a

.tO-

ooo O

d o -

c 9/ozz,rl

q v l r iu 'd

3 p

v ls 6zu

q r ' n L 1

l-ro

: _ =

aFa

Fq

t

i ! \

0t / r t t l

y g s s r 8 g t / a z r \ )

t 'J

-=i =1. ff" l -13 |

n t + t o t Nr - - - G - - C - { - r

uf 0.0 6l cL

dcc oL l

ycl rt

1 9

Ouartz Lock

O N I I O F F

Speed selectorzza

PWR.822 0

PWR-822 0SPEED ADJ.

33 T T45SDeed detector

P1,\tR-822 strobe Speed

PD 1001PWX-006 No.l1PV\lX-fi)6 No.10

PlWx-oOO No.9

PWX-006 No.8Pl,\lX-oOO No.7

PWX-006 No.6PWX-0O6 No.S

PA2001

2SC1312

2SC945

t5>rE^uFe"

hrVX-006 No.4PwX-006 No.3

PWX-006 No.2

PWX-0O6 No.1

d;

Parts List of Drive Control Assembly (PWG-008)

SEMICONDUCTORS

Symbol Description Part No.

u l

a2o304o5

o6

D

Tra nsistorTransistorTransistorTransistor

t c

Diode

2 S C 1 3 1 2 H o r G2 S C 1 3 1 2 H o r G2SC945 R, O or P2SC945 R, Q or PP D 1 0 0 1

PA2001

152473

PL-E'5ct


R36R37R38R39R40

Carbon f i lm 33Carbon f i lm 180

Carbon f i lm 6 .8kCa rbon f i lm 1 .8kCa rbon f i lm 10k

RDTaPS 330JRD74PS 181JRD74PS 682JRD/rPS 182JRDz4PS 1O3J

RESISTORS


V R 1VR2

R 1R 2R3R4R 5

R6a7R8R9R 1 0

R l 1R12R 1 3R 1 4R 1 5

R 1 6R 1 7R 1 8R 1 9R20

R21R22R23R24R25

R26R27R28R29R30

R 3 1R32R33R34R35

Semi-f ixedSemi- f ixed

15k-B680-B

Carbon f i lm 10kCarbon f i lm 180kCarbon f i lm 82kCarbon f i lm 10kCarbon f i lm 180k

Carbon film a2kCarbon f i lm 1MCarbon f i lm 1MCarbon f i lm 47kCarbon f i lm 4.7M

Carbon f i lm 1 .5kCarbon f i lm 56kCarbon f i lm 56kCarbon f i lm 56kCarbon f i lm 56k

Carbon f i lm 47kCarbon f i lm 39kCarbon f i lm 1MC a r b o n f i l m 1 1 0 kC a r b o n f i l m 1 1 0 k

Carbon f i lm 39kCarbon f i lm 9 ' l k

Ca rbon f i lm 10kCarbon f i lm 13k

Carbon f i lm 27k

Carbon f i lm 75kCarbon f i lm 33kCarbon f i lm 5.6kCa rbon f i lm 5 .1kCa rbon f i lm 5 .1k

Ca rbon f i lm 5 .1kCa rbon f i lm 5 .1kCarbon f i lm 4.7 %WCarbon f i lm 33Carbon f i lm 33

PCP-006PCP-007

RD74PS 1O3JRDz4PS 184JRD%PS 823JRD'/4PS 1O3JRD74PS 184J

RD''/4PS 823JRDlzaPS 105JRD''/4PS 1OsJRD74PS 473JRD/cPS 475J

R DZaPS 1 52JRD74PS 563JRD'/4PS 563JRD74PS 563JRD%PS 563J

RD'/rPS 473JRD74PS 393JRDZaPS 105JRD/aPS 114JRDy4PS ,I 14J

RD74PS 393JRD%PS 91 3JRDy4PS 1O3JRD,/4PS 133JRD%PS 273J

RDY4PS 753JRD%PS 333JRD%PS 562JRD%PS 51 2JRD/4PS 512J

RD%PS 512JRD%PS 512JRD%PS 4R7JRD/4PS 33OJRD%PS 33OJ

CAPACITORS


c1c2c3c4c5

c6c7c8c9c 1 0

c 1 1c12c 1 3c't4c l 5

c 1 6c17c l 8c 1 9c20

c21c22c23c24c25

c26c27c28c29c30

c31c32

Ef ectro lyt ic O.22My la r 0 .1Mylar 0.068Ceramic O.O47Ceramic 33p

Ceramic 47p 50VMylar 0.033 50VMylar 0.0012 50VElectrolyt ic 1 50VElectrolyt ic 1 0 16V

Electro lyt ic

Electro lyt icElectro lyt icElectro lyt icElectro lyt ic

Electro lyt icElectro lyt icElectro lyt icElectro lyt icElectro lyt ic

Electro lyt icElectro lyt icElectro lyt icElectro lyt icElectro lyt ic

Electro lyt icElectro lyt ic

4 7 1 0 V4 7 1 0 V22 lov3 3 1 0 Vo.22 10V

25V1 6 V

0.33 35V2.2 16V1 50V2.2 16V0.33 50V

o.22 50V220 6V33 25V33 25V33 25V

4733

10v50v50v50v50v

E lectro lyt ic 4.7 25VElectro lyt ic 1 50V

Electro lyt ic 1 50V

Electro lyt ic 1 50V

Ceramic O.O47 50V

cEA 470P 10cEA 470P 10cEA 220P 10cEA 330P 10CEA R22M sONP

CEA R22M sONPcoMA 104K 50coMA 683K 50CKDYF 473250ccDcH 330J 50

ccDcH 470J 50coMA 333K 50coMA 122J 50CEA OlOM sONPcEA 100P 16

cszA R33M 35CSZA 2R2M 16cEA 010P 50CSZA 2R2M 16CEA R33M sONP

CEA R22M sONPcEA221P 6cEA 330P 25cEA 330P 25cEA 330P 25

cEA 4A7P 25CEA OlOM sONPCEA OlOM sONPCEA O1OM SONPCKDYF 473250

cEA 470P 25cEA 330P 16

OTHERS


CrystalHea t s i nkAng leConnector socket assembly (G)

Connector p in (A)

Connector p in (E)

Connector p in (F)

PSS-001PNS-OO2P N B - 1 9 5PXA-169PKP{08

PKP.O1 1PKP.O12

e l

6.3 POWER SUppLy ASSEMBLY (pWR-822)

Parts List

2502342SC3.'225C3'72

a ,

L-----r

ta

6O

r-

(f

aG

cn

)<

t6

(t

Ds WZ-061R ro 3.3K

Oc!<!

da

Ro 4. ' lK

SEMICONDUCTORS


o1a2o3o4o5

D 1D2D5D 1 0

TransistorTransistorTransistorTransistorTransistor

Bridge rectif iersBridge rectif iersZener diodeDiode

25D23425C372-Y25C372-Y25C1279-525C372-Y

PCX-010PCX-011w2-0611S-1887

R ESISTORS


R 1R2R3R4R 5

R6R7R8R9R 1 0

R 1 1R12R 1 3

Carbon f i lm 47

Carbon f i lm 1 .8kCarbon f i lm 1 .8kC a r b o n f i l m 5 . 1 k

Carbon f i lm 10kCarbon f i lm 2 .7kCarbon f i lm 4 .7kCarbon f i lm 100kMetal oxide 3.3k 3W

Carbon f i lm 22OkCarbon f i lm 4JkCarbon f i lm 1 .8k

RD',/.PS 470J

RD%PS 182JRD%PS 182JRDI/cPS 512J

RDZaPS 103JRDY4PS 272JRD%PS 472JRD74PS 1O4JRS3P 332J

RD%PS 224JRD%PS 472JRDZcPS 182J

CAPACI TORS


c1c3c4c5c6

c7c8

Myler 0.033 250VCeramic 0.01 250VElectro lyt ic 47O 50VElectro lyt ic 33 35VEf ectrolytic 100 25V

Electrolytic 4.7 250VElectrolytic 2.2 25V

PCL-013ACG-001cEA 471 P 50cEA 330P 35c E A 1 0 1 P 2 5

CEA 4R7P 250CEB 2R2P 25

OTH ERS


FU1FU2FU3

Fuse c l i pFuse 300mAFuse 5O0mAFuse 1O0mA

Heat s ink

K91-006AEK-023PEK-OO1PEK.OO3

PNS-OO1

PL-55c,

AC 110V120V220V240V

Power switch

Power transformer

PWG-008No.15

PWG-008No.16

PWG.008No.20

25D234 E

B

25C372

2S,C1279

@?@'€

6.4 POSITlONAL DETECTOR ASSEMBLY (PWX.OO6}

PIIVG-008 No. l0

MG-008 No.9PWG-008 No.3

RIVG-q)8 No.1Rt/G-008 No.5

PIVG-(X)8 No.7PWG-oO8 No.6

Pt/tlG.OO8 No.1 1

Parts List

5

It -

l*:I

l_i["i

{

E :a

h

._.J

RESISTORS

Symbol D.lFription Part No.

R101R 102R10:]R1(X

Carbon filrn 360Carbon tilm 360Carbon film 360Corbon film 680

RD'/.PS 36,tJRDi/.PS 361JROv.PS 361JRD'/.PS 6A1J

OTHE RS

Symbol Da.cription P.n No.

HAHBHC

Hall elornontHallalsmontHall alamsnt

PCX-012rcx-012FCX-012

24

7. PACKING

Protector (A)PHA.028

Protector (PHA.029

StopperKNK-403

Vinyl coverH56-603

NOTE:Parts indicated in green type cannot be supplied,

Rubber mat assemblyPEA-014

-Upper boardPHC-O24

Operati ng instructionsPR8-040 (S type)PR8-042 (ST type)

Viny l bag

Protector (A)PHA-028

CasePHN.OO5

i cou",PHN.OO2

Protector (B)PHA-029

--p6sking casePHG-146PHG-I38 (ST typeof PL-550X)

Viny l bagPH L .012

/'?-

25

ACCESSORY

ScrewdriverKEX-OO2

CasePH N-OO5

PL-E'5cl

Lateral weightKLA.438

Headshe l l assemblyPXA.630

Overhang gaugePEC-012

Sub weightPLA.564

WeightPXA.580

45 AdaptorKNK-055 H!| tvoe onrv

tr idge mounting screws-6nuts-2, washers-2

Sc rew (15mm) B11 -657(11mm) KBA-044( 8mm) KBA-045

Washer 823-642Nu t 871 -053

1 O

8.8.1

OPERATING PRINCIPLES. CIRCUIT DESCRIPTIONSBLOCK DIAGRAM

P D r00l

I

q lJ I

b

t1

t 5 i

Stroboscopic LamP*B 20v

E---ozo--!{: ncv J

TTv , 2

IIIL

122

SW

Power SuPWR.€

Ampl i f ie r I

FrequencyDivision Selector I l

1 / 2 0 1 1 2 71' l

_q

;

IIIIII

III

Ouartz/ RC

Oscil lator Switch3O72 kHz

Ouar tz Osc i l la to r

Frequency D iv is ion

Se lec tor I 1 /80 1 /108

2

27

-J

IS

Voo12 .5V

Crr

Power Supp ly Ass 'yPWR-822

Rtr

?_

I

IIIIIIIt ,

J i

3. .Jr0r0- I

i\- '/' I!

\eosi t ional Detector Ass'yPWX-O06

+B 2OVs w r . S P E E DSWz. OuartzV R r , V R z . A D J .V R I S P E E D

SELECTOR switchLock(OFF) switch

ADJ.

PA 2001 lsI

, , It l l03 04 Voltage

Stabi I izer

RC Ci rcu i t I Pos i t ion S igna lFormat ion

Ci rcu i t

RC Ci rcu i t I l

I Orive Controt Ass'y

I PWG-008I

8.2 MOTOR OPERATION1 Motor Construction1. The PXM-029 is an outer-rotor brushless DC

motor with 6 poles and 9 slots.2. Motor windings are arranged in a 3-phase Y con-

figuration. For detection of the platter posi-tion, 3 Hall elements are mounted at 40' inter-vals.

3. As the motor rotates, these Hall elementsgenerate an AC voltage dependent upon thestrength and direction of the magnetic flux.

4. The bottom side of the rotor magnet possesses200 magnetic poles. As these rotate above thespeed detection plate, an AC voltage is generatedwhich serues as the speed detection signal.

5. The inner surface of the rotor magnet possesses6 magnetic poles. As shown in Fig. 2, these aretilted by 10' relative to the vertical axis.

Rotor Magnet

Speed Detection Plate Hal l E lementF ig . 1

Fig. z

2. Principle of Motor Rotation

1. Let us assume that the motor is at standstill,in the position shown in Fig. 3.

2. In this position, Hall element Ha is locatednext to a borderline between south and northpoles, Hs next to a south pole, and Hs next toa north pole.

3. When the unit is switched on, the outputvoltages of the respective Hall elements will beas shown in Fig. 13-a, page 33.

4. The Hall element output is applied to thePosition Signal Combination Circuit containedin IC PA2001 and utilized to control the cur-rent flowing to the motor drive coils.For further details, see paragraph "Drive Cir-cuit." on page 30.

5. The output from the Hall elements undergoeswaveform formation in the Position SignalCombination circuit. The resulting waveformsare shown in Fig. 13-b, page 33.

6. These composite signals are used to switch thedrive current in such a way that each motorwinding receives the proper current to polarizethe magnetic poles for north, south, or OFF inthe correct sequence.

In actual rotation, this happens as follows.

7. As the pole of coil Le becomes a south pole,that of L" becomes north, and Ls, neutral.

8. Repulsion between the S pole at Lo and therotor S pole, and attraction between the Ls Npole and the rotor S pole exert a propulsiveforce on the rotor.

9. As the rotor tums thrgugh 2O" of arc, theoutput from the Hall elements changes.

10. LB now enters OFF state, Ls becomes a Npole, and La a S pole.

11. The Lc N pole now attracts the rotor S pole,and the L6 S pole attracts the rotor N pole.Rotation continues.

12. Correspondences between rotor positions and.coil polarities are shown in Fig. 4, a'f .

F is . 3

2 9

Fig .4-a

F ig .4 -b

Fig. 4-c

PL-s5C,

F i g . 4 €

Fis.4- f

3. Speed Detection S€ction1. The speed detection plate has two rows of

"detection pattems. "2. The bottom surface of the rotor is magnetized

with 200 magnetic poles, and these rotat€ at ashort distance above the speed det€ction plate.

3. The output voltages obtained from the innerand outer detection patt€ms differ 90" in phase.

4. The output voltage from the det€ction pattemshas a frequency of 55.5H2 at 33-1/3 rpm, andof 75Hz at 45 rpm,

5. The two signals are amplified by transistors Q1and Q2, respectively, and then supplied to ICPD1001.

4. Functions of |C=PD10011. When the power is tumed on, the Quartz

Oscillator supplies a quartz+ontrolled signal of3O72kHz.

2. This frequency is divided by 572 gf2 = 2e 1,becoming 6kHz. This signal then passesthrough the Quartz/RC Oscillator Switch andon to the Frequency Division Selector II.

IFis. 4-d

Sl Waveform

52 Waveform

f:r---\-, v vF i g . 5 - a

Sl Speed Detection Signals after wave'shaping

52 Speed Detection Signals after wave-shaping

Composite Waveform I

3. The Frequency Division Selector I supplies asignal for the stroboscopic lamp. For thispurpose, it divides by 80 (giving a signal of75Hz for 45 rpm) or by 108 (giving a signalof 55.5H2 for 33-1/3 rpm).

4. Division in the Frequency Division Selector IIis by 20 (giving 300H2 for 45 rpm) or by 27(giving 222H2 for 33 rpm). The output signalis then passed on to the Phase Comparator andthe Frequency Comparator where it is com-pared with the speed detection signal.

5. The speed detection signals, after amplificationby Q1 and Q2 (waveforms shown in Fig. 5-a)undergo waveform formation in amplifiersAMP I and AMP II. The resultant waveformsare shown in Fig. 5-b. They then enter theFrequency Multiplication Block.

Fig. 5-b

Composite Waveform Il

Fig . 5 -c

In the Frequency Multiplier, the 90" phasedifference between the two signals is utilizedto produce, in a logic circuit, a compositesignal of double frequency; this is then multi-plied by 2 once again, resulting in four timesthe original frequency. See Fig. 5-c.This Speed Detection Signal x 4 is then com-pared with the quartz-derived reference signalin the Phase and Frequency Comparators.

8. If the phase of the detection signal lags that ofthe reference signal, the combined PC outputvoltage (at pins 21 and 22 of PD-1001) will rise;conversely, if the detection signal phase leadsthat of the reference signal, PC output will drop.See Fig. 6-a. The former case indicates thatturntable rotation is too slow. The latter casemeans that the turntable is rotating too fast.

9. Similarly, if the frequency of the detectionsignal is lower than that of the reference signal,the voltage of the combined FC output signal(pins 18 and 19 of PD1001) will drop. Converse-ly, this voltage will rise if the detection signalfrequency is higher than the reference signalfrequency. See Fig. 6-b. Again, the former caseindicates slower than rated turntable rotation,while the latter case means faster than ratedrotation.

Phase dif ference Phase advancepractical ly zero.

P i n ( 2 1 ) Phase delay

_l_Jr_llJlJrJl''"''o'-l-Tl- ljljlll

Compositeoutputvol tage -

\_Output of Phase Comparator

Fig . 6 -a

Lower HigherFrequency FrequencyP i n ( 1 9 )

P i n ( 1 8 )

ldent ica lFrequency

2.5ms

6 .

7 .

, 2.5msCompositeoutput voltage

Output of Frequency Comparator Fiq. 6_b

10.The RC Oscillator is a 6kHz nonstable multi-vibrator. With the Quartz Lock switch in OFFposition, the reference signal is obtained fromthe RC Oscillator and passed on to the Phase

3 1

and Frequency Comparators via the FrequencyDivision Selector II, much in the same way aswith the quarbz-derived signal.

11.In QUARTZ LOCK OFF position, the fre-quency of the RC Oscillator can be adjustedwith the SPEED"ADJ control by !6Vo.

12. This adjustment of the RC oscillator derivedreference frequency results in an equivalentchange in tumtable speed.

5. The Active Filter1. The output from the Phase and Frequency

Comparators contains unwanted harmonicsresulting from the reference frequency and the(multiplied) speed detection signal frequency(222,3OOH2\.

2. In order to remove these harmonics. an activefilter is provided in the IC PA20b1 (as an RCcircuit in the Operation Amplifiers I & II).

3. To remove these harmonics with a low passfilter, it is necessary to provide a large amountof attenuation at the higher frequencies withoutcausing major phase changes at the low fre-quencies.

4. For the output of the Phase Comparator, thisattenuation is obtained in two steps: a1.2dBloct.active filter made up of a RC circuit I andOperation Amplifier I; and a passive 6dB/oct.filter consisting of R28 and C17; resulting in anoverall attenuation of 18dB/oct. See Fig. 7-a.

5. For the output of the Frequency Comparator,the necessary attenuation of 12dB/oct. isobtained in the active filter formed by RC cir-cuit II and Operation Amplifier II. The signalthen passes through R25 and is combined withthe Phase Comparator output.

6. Since the Frequency Comparator output passesthrough two active (and one passive) filters,its total high range attenuation amounts to30dB/oct. See Fig. 7-b.

7. The cut-off frequency of each filter is set atl2Hz.

8. The active filters also function as invertingamplifiers. Their output phases are invertedrelative to the Phase Comparator output. Theoutput is the supplied to the Comparator Con-trol Circuit.

t 2 t l z

PC output' F ig. 7-a

1 2 N t

FC outputFis . 7-b

6. Comparator Control and Forward/Reverse Com-mand Circui t

1. Two inputs are supplied to the Control Com-parator: a) a 5V reference voltage from the volt-age stabilizer; and b) the output from the activefilters, which serves as the detection signal.

2. If the tumtable rotates faster than rated speed,the detection signal is higher than the 5Vreference.

3. When this happens, the Comparator Controlsends a command to the Forward/Reverse Com-mand Circuit, telling it to apply a reverse torqueto the motor to slow it down.

4. Conversely, if lumtable rotation is below ratedspeed, the detection signal voltage will be belowthe 5V reference.

5. In this case, the Comparator Control indicatesto the Forward/Reverse Command Circuit thatforward torque must be applied to the motor toaccelerate it.

Operating point at zero load

+

6 Inprtt voltage differential betweenV18 . . . Vo l t age a t p i n (18 )V19 . . . Vo l t age a t p i n (19 )7. Drive Circuit1. Switching signals obtained from the three Hall

elements and having been processed in the Posi-tion Detection Signal Formation Circuit, appliedto terminals a, b and c in Fig. 9, in order toswitch transistors Q2 - Q7.

2. These signals are step waves as shown in Fig. 10,with relative phase differences of 120" betweenthem.

ControlI nputTerminal

Fig. 9

p ins (18 ) and (19 )F i s . 8

32

Fis . 10

3. Because of the low potential at pin (a), Q2 isON. Pin (b) is at high potential, so Q6 and Q9are ON. Pin (c) is at standard potential - astandard bias is applied which keeps transistorsQ4, Q7 and Q10 OFF.

4. A current caused by voltage Vgs flows throughq2 - e) - coil La - coil L" - (4) - Q9, caus-ing a north pole to appear at L" and a souttrpole at LA.

5. This magnetism causes the rotor to start rotat-ing. After 20 degrees of rotation, the signallevels at terminals a, b and c will be come as

shown in Fig. 11-b II, and the current path ofthe drive current is changed. After another 20degrees of rotation, the signals become as in Fig.11-c III, and the drive curent path is changedagain. This process continues, with cunent pathchanges every 20 degrees and sigrral levels as inFigs. 11-d IV, 11-e V, and 11-f VI, whereuponthe cycle retums to 11-a and repeats.

6. Also, a control sigrral from the Forward/ReverseCommand Block is applied to the control inputterminal. and this controls the current flowthrough the motor windings.

Fig . 11-a

F iq . 1 1 .b

F ig . 1 1 -c

Fis. 1 ld

o

E

o()

F

o

E

(J

0r o3___R - (P

t v" l* l-l]

r*t It -@>.,'QbQ1

G n d

a:

lr€ 0 4 II

)@

.l] ,"F\@>.,klk I

o{

G

.EE

c

-

EF

sEc

te\Etrtr\

x/ asL. l

J

8. Stroboscope Pulse Circu it1. The platter has only a single row of stroboscopic

markings. Switchover for 45 and 33 rpm is ef-fected by changing the frequency of the pulseto the stroboscopic lamp.

2. From the Frequency Divider Selector I, a fre-quency of either 75Hz (for 45 rpm, representing1/80 of 6000H2) or 55.5H2 (for 33 rpm, repre-senting 1/108) is obtained and supplied to thetransistor that drives the stroboscopic lamp.

9. Reverse Rotation Prevention1. PXM-029 operates indiscriminately in regard to

the direction of rotation. If the platter is tumedslowly in the reverse direction by hand, a for-ward torque will be applied until the platterstops, reverses its rotation and reaches ratedspeed in the proper direction.

2. If, however, the rotational speed in the reversedirection is in excess of 33 or 45 rpm, theForward/Reverse Command Block may ,,mis-

read" this as simply excessive speed (',overrun,')and apply a reverse torque until rated speed isattained.

3. This reverse torque will further accelerate thetumtable rotation in the reverse direction. Thisis known as "reverse run-away."

4. To prevent this from happening, a ReverseRotation Prevention circuit has been included.

5. This Reverse Rotation Prevention circuit con-sists of two flip-flops and AND gates See Fig. 12.

6. The input for this circuit is derived from theHa.ll element position detection signals processedin the Reverse Rotation Prevention circuit.

PL-E'5cl

Fig . 1 1 -e

Lc

F iq . 1 l - f

7. As long as the platter is rotating in the properdirection, this pulse enters in the order B - A -C, and no "reverse" command is generated.

8. If, however, the platter rotates in the reversedirection, the pulse order becomes A - B - C,and a corrective command is given to the For-ward/Reverse Command Circuit.

! . t: 4

| | L"dj"t L 1I

o -o@

&">,,'Q€ iLd€

Fig. '12

F F rC

AN I ) F F z

R a o l o u t 2 o u t au o I o I o o o

I o I o o o o

C o o I o I I o 1

1 o I o o o o

t l o 1 o 1 o o o

c o o o 1 1 o I oFig . l2 Tru th tab le

Hezl

Hczl

Hcr l

o)E

THAt

o

Eb H eq)

o3

5 H so

- L4(H41+

E

+o)o=q)

. f i ts{Hr. '+ooEoOL6(Ha2+

( H a

1""I

HB:

I Hcl

l H o\ H c

f H o1""I Hn 't -

I ""'1""t H c

. F Ao

CE

(q

3O CtL

. 9 A(o

C E BQ)

L6 ) f> wq)

r

F o r w a r d R o t a t i o n E + A - cR e v e r s e R o t a t i o n A + B - c

F i g . 1 4

35

8.3 WAVEFORMS <PWG-008>

20v

:s P0 l00 l

tNF r0.n/50

, t t 6

337., r pm- 55 .55Hr

I

r0

I

E

5

3

2

I

@@

o2.5V

O V

l? .5v

25V

6.25V ] , ,

, , ' - '

r p m Speed up Speed down

6KHr

- 0 v

Approx 4O0mVp-p

3O72kHz

Increasing LoadOvershoot

- l E r /

l l

a1 2

nr3E]

{l}

;l 6

t?

f q I I a

t l

2. L-- - - - - : * -R:. 13 . in 33, ?5

I

at 3 Cr: 33, 25

36

4.5 ms

12.5 v

PL-s5cl

9.9.1

TROUBLESHOOTING GUIDEMOTOR DOES NOT ROTATE

Power Supply Ass'y PWR-822 defective

+20V between pins (15)and (16) of Drive ControlAss'y PWG-008?

PA2001 defective.]-2.5V at Emitter of Q3? 10V at pin (11) of PA2001?

Q4 or Q3 defective.

5V at pin (18) of PA2001? R29, R30 or C18 defective.

PD1001 defective.1.5- 3V between pins (17)-(18) of PA2001?

Check output of PD1001.See page 18.

Low pass filter defective.

Check potential at Hallelements (400mVp-p) andcenter point (3.8- 4V).

Motor defective.

With power OFE, resistancebetween terminals (2) and(4), (4) and (6), (2) and(6) on Drive Control Ass'yPWG-008 should be 64ohms.

Motor defective.

PA2001 defective.

9.2 MOTOR RUN-AWAY

Check if Q3 emitter volt-age is 12.5V.

Rotate platter at approxi-mately 33 rpm by hand.Check if 55.5H2 signals at0.3V are obtained at col-lectors of Q1 and Q2 (with90" phase difference).

Check if 0.75mV AC pre-sent at emitters of Ql andq2.

Motor defective.

Q1 or Q2 defective.

Check if 0.3VAC voltage ispresent between pins (1)and (3) PD1001.

C5 or CG defective.

Check if 3.4VAC is presentbetween (2\ and (4) ofPD1001.

PD1001 defective.

Check output signal ofDrive Control Ass'y PWG-008 pin (20) 55Hz (33rpm),75H2 (45rpm).

PD1001 defective.

Rotate platter by hand at33rpm. Check output sig-nals at pins (18) thru (21)of PD1001.

PD1001 defective.

Check for 1.5 - 3V volt-age between pins (17) and(18) of PA2001.

Low pass filter defective.

PA2001 defective.

3A

Check output signgl at pin(2O) of Drive ControlAsp'y-55.5H2 (33rpm),75Hz (45rpm),

Quartz Oscillator or PD1001defective.

RC Oscillator or PD1001defective.

Check output at pin (14)of PD1001 - 6kHz.

9.3 MOTOR ALTERNATES BETWEEN FORWARD AND REVERSE ROTATION

9.4 UNSTABLE ROTATION NEAR RATED SPEED

PL-sEicl

Check power supply volt-ages +20V, +12.5V

Check signals at pins (1),(3) of PD1001 and atcollectors of Q1, Q2. Alsocheck for proper phase re-lationships.

PD1001 or Ql, q2 de-fective.

39

10. ADJUSTMENT PROCEDURES1. Adjustment of PA2001 Operating PointThis adjustment is necessary whenever PA2001 hasbeen replaced or repairs have been performed onthe RC low pass filter ass'y or the power supplycircuits.As the PXM-029 utilizes a phase comparator andfrequency comparator combination, the operatingpoints of these comparators must be adjusted.o Set unit in QUARTZ LOCK ON mode, 33 rpm.o Unplug jumper connector from Drive Control

Ass'y PWG-008.r Adjust white potentiometer VR2 until strobo-

scope comes to a standstill. See Fig. 15.

F i s . 1 5

2. Speed AdjustmentThis adjustment is needed when proper speed can-not be obtained with the SPEED ADJ control inQUARTZ LOCK OFF mode.o Set SPEED ADJ control at mechanical center

position.o Adjust blue potentiometer VR1 on Drive Con-

trol Ass'y PWG-008 until stroboscope comes toa standstill. See Fig. 16.

F is . 16

PL-s5cl

11. D.D. OTOR EXPLODEDPT2.6x6

VIEWNOTE:Parts indicated in green type cannot be supplied.I

CoverPNW- 175

vSpeed detector assemblyPNP.O27

Positional detector assemblvPWX-OO6

o*s,...]R!<-

dJ.

"19--rYConnector pin (A)PKP.OOS

X'talPSS.001

1M

'WaPNW-147

A A

B

c c

D D

PL-s5cl

The following locations in the text are incorrect. Please perform the corrections shownbelow.

4 EXPLODED VIEW (on page 11, 12l .

o Please paste the following illustration below the table on page 18 (in 6-D).

Incorrect Correct

Page 11 2-B D.D. Motor(see page 39) D.D Motor (see page 41)

Page 77 2-C PART 1 (see page 11) PART 1 (see page 13)

Page! 2 5-B PART 3 (see page 13) PART 3 (see page 15)

Page12 5-C PART 2 (see page 12) PART 2 (see page 14)

Page126-D PART 3 (see page 13) PART 3 (see page 15)

ll.S\

DIRECT DRIVE TURNTABLE

PLI55OHGT

Additional

JoruicMnunl

()ProNEEFl'

A

c

D

A

B

c

D

12. HGT TYPE EXPLODED VIEW

Power supply assemblYP1^/R-823(on page 47)

,-6.-:\{ \r"fcPl

Power transformerPTT-015

AC inletPKP.O14

PSA3x8

Ang le

Line voltage selectorPSH.OOl

NOTE:Parts indicated in green type cannot be supplied.

PSA3x10

OCW3.1x 10

PlatePAM.O44

- - CabinetPMM.OTO

Function assemblyPXA.233(on page 45)

O OTHER PARTS

Packing cas€ PHG'147

Operating instructions PRB-041 (English)PRD-020 (French/German)

OCW3.1x10

P|--5scl /HGiT

A A

B

c c

D D

3

3

aTg

OVlll lg

Function Assembly (PXA-233)

MicroswitchKSF.O23

A

B

c

D

A

B

c

D

13. HGT TYPE SCHEMATIC DIAGRAM, P. C. BOARDPATTERN AND PARTS LIST

13.1 SCHEMATIC DIAGRAM

a

G '

a

f-

t t EL.-j r l

: r -

3 '

- d - tY ' ?

! ' : ' a <

- ' a : a '

. ? .

: i t 5 5

,

i

o 6

a...

&

z

IIII

:

46

Pl.-5rC'/HGlT

13.2 POWER SUPPLY ASSEMBLY (PWR.823I

AC 220V240V

Power switch Powerswitch

PWG.m8No. l5

nvG.008No.16

Pl rc-(xt8No.20

Symbol D6scription Part No.

o102o3o4o5

D 1D2D5D 1 0

TransistorTransistorTransistorTransistorTransistor

Br idge rect i f iersBr idge rect i f iersZener d iodeDiode

25D23425C372-Y25C372-Y2SC1279-S25C372-Y

PCX-010PCX-01 1w2-0611 S-1 887

Parts List of Power Supply Assembly (PWR-823)

SEMICONDUCTORS

CAPACITORS


c1c2c3c4c5c6c7c8

Mylar 0.033 250VMylar 0.033 250VCeramic 0.01 250VEfectrolytic 47O 50VElectro lyt ic 33 35VEf ectrolytic 100 25V

Ef ectro lyt ic 4.7 250VElectrolytic 2.2 25V

PCL-013PCL-013ACG-001cEA 471 P 50cEA 330P 35c E A 1 0 1 P 2 5CEA 4R7P 25OCEB2R2P 25

RESISTORS


R 1R 2R3R4R 5

R6R7R8R9R 1 0

R 1 1Rl2R 1 3

Carbon f i lm 4.7

Carbon f i lm 4.7Carbon f i lm 1.8k

Carbon f i lm 1.8kCarbon f i lm 5.1 k

Carbon f i lm 10kCarbon f i lm 2.7kCarbon f i lm 4.7kCarbon f i lm '100k

Metal oxide 3.3k 3w

Carbon f i lm 22OkCarbon f i lm 4.7kCa rbon f i lm 1 .8k

RD/rPS 470J

RD1/4PS 47OJRDT.PS 182J

RD%PS 182JRD'/ .PS 512J

RD%PS 1O3JF..D%PS 272JRD%PS 472JRD'/'PS 1O4JRS3P 332J

RD%PS224JRD%PS 472JRD/aPS l82J

OTHERS

Symbol D6cription Part No,

F U lFU2FU3

Fuse c l ipFuse 31 5mAFuse 500mAFuse 100mA

Heat s ink

KKR.OOlKEK.OOEPEK-OO7PEK.OOS

PNS-OO1

4 8

Documents

CDrqoNeerr - s. · PDF fileOPERATING PRINCIPLES CIRCUIT DESCRIPTION ... The stroboscope appears ... Operation button Button unit PAD.OI 1 Knob (SPEED ADJ)