Akai AP-206 Bedienungsanleitung

AP-206

,.:

AP-306

AKAI DIRECT DRIVE TURNTABLE

AND

AI{AI DIRECT DRIVE QUARTZ LOCK TURNTABLE

MODEL

AP·206

AP·306

ALSO APPLICABLE TO BLACK MODEL

SECTION 1 SERVICE MANUAL . . . . . . . . . . . . . . . . . . . . . . .. 3

SECTION 2 PARTS LIST 31

SECTION 3 SCHEMATIC DIAGRAM 48

SECTION 1

SERVICE MANUAL

TABLE OF CONTENTS

I. TECHNICAL DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4

1. MODEL AP-206/C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 4

2. MODEL AP-306/C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5

11. DISMANTLING OF UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6

Ill. CONTROLS 7

1. MODEL AP-206/C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 7

2. MODEL AP-306/C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 8

PRINCIPAL PARTS LOCATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9

1. MODEL AP-206/C 9

2. MODEL AP-306/C 10

V. BLOCK DIAGRAM 11

1. MODEL AP-206/C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11

2. MODEL AP-306/C- " 11

VI. CIRCUIT OPERATION 12

1. GENERAL 12

2. SERVO CIRCUIT 12

3. STROBE LIGHT CIRCUIT 13

VII. MECHANICAL ADJUSTMENT 14

1. STYLUS PRESSURE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . .. 14

2. OVER HANG ADJUSTMENT 15

3. SLEEVE POSITION ADJUSTMENT 16

4. PU PLATE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 16

5. LIFTER HEIGHT ADJUSTMENT 17

6. AUTOMATIC RETURN POSITION ADJUSTMENT 17

VIII. ELECTRICAL ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 18

1. DIRECT DRIVE P.C BOARD ADJUSTMENT 18

2. PLL P.C BOARD ADJUSTMENT 19

CLASSIFICATION OF VARIOUS P.C BOARDS 21

1. P.C BOARD TITLE AND IDENTIFICATION NUMBER 21

2. COMPOSITION OF VARIOUS P.C BOARDS 22

I. TECHNICAL DATA

MODEL

AP-206jC

TURNTABLE 314 mm aluminum alloy die-cast

DRIVE SYSTEM Direct drive, Auto-return J-

MOTOR DC Servo Motor

SPEED

PITCH CONTROL 33-1/3 and 45 rpm ±2.5%

SPEED ACCURACY 1,000 Hz ±0.15%

WOW AND FLUTTER 0.035% (DIN), 0.025% (JIS)

RUMBLE Better than 49 dB (DIN A), 70 dB (DIN B)

TONE ARM Static-balanced type with Anti-skating Adjuster

ARM LENGTH 220 mm

STYLUS PRESSURE ADJUSTMENT RANGE

to 3 grams

APPLICABLE CARTRIDGE WEIGHT 4 to 12 grams

ARM LIFTER Oil-damped

OVERHANG 15 mm

OFFSET ANGLE 22°30'

HORIZONTAL TRACKING ERROR ANGLE ±2°

SHELL WEIGHT 7.8 grams

CARTRIDGE (AP-206C only: Model AP-206 does not include cartridge) Induced

magnet type

CARTRIDGE WEIGHT 6.4 grams

FREQUENCY RESPONSE 25 Hz to 30,000 Hz

OUTPUT VOLTAGE 5 mV

CHANNEL SEPARATION More than 23 dB

OPTIMAL STYLUS PRESSURE 2 grams

DYNAMIC COMPLIANCE 8 x 10-

cm/dyn vertical

8 x 10-

cm/dyn horizontal

POWER REQUIREMENTS' 120V, 60 Hz for U.S.A. and Canada

220V, 50 Hz for European countries except U.K.

240V, 50 Hz for U.K. and Australia

1'10 to 120V, 220 to 240V switchable 50/60 Hz for other countries

DIMENSIONS 440(W) x 158(H) x 350(D) mm

WEIGHT 7.4 kg

STANDARD ACCESSORIES

45 rpm Adapter .

Minus driver ....

Operator's Manual

For improvement purposes, specifications and design are

subject to change without notice.

2. MODEL AP-306jC

TURNTABLE 314 mm aluminum alloy die-cast

DRIVE SYSTEM Quartz Lock Direct Drive, Auto-Return, .

",.

MOTOR DC Servo Motor J'

. "

SPEED

PITCH CONTROL 33-1/3 and 45 rpm ±2.5%

SPEED ACCURACY 1,000 Hz ±0.08%

WOW AND FLUTTER 0.035% (DIN), 0.025% (JIS)

RUMBLE Better than 49 dB (DIN A), 70 dB (DIN B)

MOMENT OF INTERIA 230 kg.cm?

TONE.,ARM Static-balanced type with Anti-skating Adjuster

ARM LENGTH 220 mm.

STYLUS PRESSURE ADJUSTMENT RANGE

to 3 grams

APPLICABLE CARTRIDGE WEIGHT 4 to 12 grams

ARM LIFTER Oil-damped

OVERHANG 15 mm

OFFSET ANGLE 22°30'

HORIZONTAL TRACKING ERROR ANGLE ±2°

SHELL WEIGHT 7.8 grams

CARTRIDGE (AP-306C only: Model AP-306 does not include cartridge) Induced

magnet type

CARTRIDGE WEIGHT 6.4 grams

FREQUENCY RESPONSE 25 Hz to 30,000 Hz

OUTPUT VOLTAGE 5 mV

CHANNEL SEPARATION More than 23 dB

OPTIMAL STYLUS PRESSURE 2 grams

DYNAMIC COMPLIANCE 8 x 10-

cm/dyn vertical

8 x 10-

cm/dyn horizontal

POWER REQUIREMENTS 120V, 60 Hz for U.S.A. and Canada

220V, 50 Rz for European countries except U.K.

240V, 50 Hz for U.K. and Australia

110 to 120V, 220 to 240V switchable 50/60 Hz for other countries

DIMENSIONS 440(W) x 158(H) x 350(D) mm

WEIGHT 7.9 kg

ST ANDARD ACCESSORIES

45 rpm Adapter .

Minus driver. . . .

Operator's Manual

For improvement purposes, specifications and -design are

subject to change without notice.

11.DISMANTLING OF UNIT

case of trouble, etc. necessitating dismantling, please

dismantle in the order shown in the photographs.

Reassemble in reverse order.

CARTRIDGE

BOTTOM COVER

SCREWS

NOTE:

Photos of dismantling are those of AP-306, but the order applies to AP-306C and AP-206jC also .

Ill. CONTROLS

1. MODEL AP-206/C

Fig. 1

1. HINGE

2.. SPINDLE

3. TONE ARM

4. TONE ARM REST

5. TONE ARM lIFTER

6. MAIN WEIGHT

7. 45 rpm ADAPTER HOLDER

8. HINGE

9. STYLUS PRESSURE SCALE RING

10. ANTI·SKATING ADJUSTER

11. BUILT·INSTROBE LIGHT

12. 45/33·1/3 rpm Speed Selector (.•. 33 .-.45)

13. PITCH CONTROL (45 rpm)

14. PITCH CONTROL (33·1/3 rpm)

15. TURNTABLE PLATTER

16. STROBE MARKINGS

17. RUBBER MAT

18. CARTRIDGE SHELL

19. CARTRIDGE SHELL FINGER LEVER

20. LOCKING NUT

21. START/CUT LEVER

22. TONE ARM lIFTER LEVER

( .Y

to Lower ~ to Lift)

NOTE:

AP-206 is not equipped with a cartridge.

2. MODEL AP-306/C

01-------;.

®f-----~~

(j)f--------=--------1.

®r-----::==---

9f------../

Fig. 2

1. HINGE

2 RUBBER MAT

3. SPINDLE

4. TURNTABLE PLATTER

5. STROBE MARKINGS

6. BUI LT-I N STROBE LIGHT

7. SPEED SELECTOR SWITCH

8. QUARTZ LOCK SWITCH

9. PITCH CONTROL

10. 45

rpm

ADAPTER HOLDER

11. HINGE

12. MAIN WEIGHT

13. STYLUS PRESSURE SCALE RING

14. ANTI-SKATING ADJUSTER

15. TONE ARM LlFTER

16. TONE ARM REST

17. TONE ARM

18. TONE ARM LlFTER LEVER

19. LOCKING NUT

20. START/CUT LEVER

21. CARTRIDGE SHELL FINGER LEVER

22. CARTRIDGE SHELL

NOTE: AP-306 is~ot equipped with a cartridge.

r:.

IV. PRINCIPAL PARTS LOCATION

1. MODEL AP-206jC

AUTO CLUTCH IA I

AUTO CLUTCH IB I

.:,.

,,"

••~---"'+-+-

MAIN WEIGHT

••••• II--'''''--I---'f- ~gt~S ~~~SSURE

()

'" •• ••

~. GEAR

t«

(i,

. I

TONE ARM LI FTER

"".t--I-----1f--+- TONE ARM

•••..•=c===i--t-

TONE ARM REST

REJECT LEVER·- --~-r------1-----~~

BUILT-IN

STROBE LIGHT

45/33 rpm

SPEED SELECTOR

RELAY P.C BOARD

IAP- 26521

PU PLATE IAI

PU PLATEIBI

SEESAW LEVER

'-'

PITCH CON~RO_ 45rpm)

PITCH CON

ROL,33rpm

TONE ARM

LlFTER LEVER

".".;c=~~----1f---7-CARTRIDGE SHELL

Fig. 3 AP-206jC Top View with Dust Cover Removed

MICRO SWITCH I SW901 1 POWER SUPPLY P.C BOARDIAP-26411

POWER TRANS (T901 1

AUTO LEVER --~~~---1~~~~----

LlFTER SPRING O- ~H--D.D P,C BOARD

IAP- 26421

,,*~-~~H-MOTOR BLOCK(DDM-331

NEON LAMP P.C BOARD

IAP- 26531

Fig.4 AP-206jC Bottom View with Bottom Case Removed

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