Pioneer pl 420 service manual

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GD PIONEER'

ORDER NO.
ART-705-O

STEREO TURNTABLE

L-5
PL-420

MODEL PL-S COMES IN FOUR VERSIONS DISTINGUISHED AS FOLLOWS:

Type 1 Voltage [ Remarks
KUT- " 1- 1-20FVonly m M WWII- 7 A I U. S. A. model(Without cartridge)
«:1 7 120v 0.... Eng; :NIZIIEQQLIQQanmi
R 1 10V-12OV/22CTV-240V (Switchable) General export model

-RTG-- -+ 1 10V-12OV/220V-240V (Switchable) v77 7 Orrsimilitary model

MODEL PL-420(which Is minor change In design from PL- 5) COMES IN THREE VERSIONS
DISTINGUISHED AS FOLLOWS.

Typo Voltage J- Remarks

KU j 120v only - F . . U.S.A. model

Rme-WMMTIOV-l20V1220V-240V (Switchable) E General export model (Without dust cover) 7
#RmF/G 1 lOV-l 20V/220V-240V (Switchable) WW I U.S. military model» (Without dust cover)

I This is the service manual for model PL-5/KUT. For servicing of the other types,
please refer to the additional service manual.

I Ce manuel dinstructicn se refére au mode de réglage, en francais.

I Este manual de servicio trata del método de ajuste escrito en espafiol.

o For the circuit and mechanism descriptions, please refer to the supplement of model
PL-7 service manual (ART-768).

FIONEER ELECTRON'C CORPORAT'ON 4 . Mang 1 Chemo. Moguro nu Yokyo 153. Japan
U... m." "cm MAW 85 OI'OVO Orwe Moonnchre. Naw Jersey 07074,)..1 S A

m. "cm CUM) ~.V. Luci huge! riuvuri 9 203C) Anzwarp 8059,.

ms "monoc- Au-TQAUA m. LTD. 1 7'8 I 841 Beundw y Rood. Braces-dc. Victoria 31 9:3 Austrono

FU©MAY (98) Printed in Japan

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CONTENTS

I. SPECIFICATIONS ..................... 2
2.FRONTPANELFACHIHES .............. 3
3. DISASSEMBLY ....................... 4
4. TROUBLESHOOTING .................. 7
5. PRECAUTIONS FOR REASSEMBLY ........ 14
6. RC. BOARDS CONNECTION DIAGRAM ..... 17
'7. SCHEMATIC DIAGRAM ................ 19

1. SPECIFICATIONS

Motor and Turntable
Drive System ................................. Direct-drive
Motor .......................... DC servo motor
Turntable Platter ......... 310mm diam. aluminum alloy die-cast
Speeds ................................. 33-1/3 and 45mm
Wow and Flutter .................. Less than 0.025% (WRMSI
Signal-to-Noise Ratio ................ More than 78dB (DIN-8)
(with Pioneer cartridge model PC-3MC)
Tonearm
Type .................. Static-balance type, Straight pipe arm
Effective Arm Length .............................. 221 mm
Overhang .............................. ' ......... 15.5mm
Usable Cartridge Weight ................ 39 lmin.) to 89 lmex.)
Subtunctions

Full auto mechanism, Anti-skating force control, Stylus pressure
direCt-readout counterweight, Cueing device, Strobe light, Free stop
hinges

8. BLOCK DIAGRAM .................... 21
9. ELECTRICAL PARTS LIST .............. 22
10. PACKING .......................... 23
11. EXPLODED VIEWS ................... 23
12. ADJUSTMENTS ...................... 29
RéG LAGE .......................... 31
AJUSTE ........................... 33
Miscellaneous
Power Requirements ................... AC120V, 60Hz
Power Consumption .......................... 9w
Dimensions ............. 420(W) X 108(H) X 367(DImm
16o1/2lW) x 4-1 /4(HI X 14-7/16lDIin.
Weight ............................. 5.9kg/1 3 lb
Accessories
EP Adapter .......................................... 1
Operating Instructions .................................. 1
NOTE:

Specifications and design subject to possible modification without
notiw, due to improvements.