Akai AP-B21 User Manual

KAT Service manua
SS SSS som
S25Be seu
AUTO-RETURN TURNTABLE
move.
AP-B21/C
DIRECT
DRIVE
AUTO-RETURN
TURNTABLE
|
moon. AP-D33/C
QUARTZ LOCK DIRECT DRIVE AUTO-RETURN TURNTABLE
_ MODEL AP-Q5 5/ C

Akai AP-B21 Specifications

General

Platter	Aluminum die-cast
Motor	DC servo motor
Overhang	15 mm
Speed	33 1/3 and 45 RPM
Tonearm	Static balance
Output	RCA
Cartridge Weight Range	4 to grams
Power Supply	AC 120V, 60Hz

Summary

AUTO-RETURN TURNTABLE MODEL AP-B21/C SERVICE MANUAL

I. TECHNICAL DATA

Detailed specifications for the AP-B21/C turntable, including speed, rumble, and dimensions.

II. MECHANISM ADJUSTMENTS

Procedures for adjusting key mechanical components like the capstan and tone arm lifter.

III. CLASSIFICATION OF VARIOUS P.C BOARDS

Identification and composition details for the Printed Circuit Boards used in the unit.

DIRECT DRIVE AUTO-RETURN TURNTABLE MODEL AP-D33/C QUARTZ LOCK DIRECT DRIVE AUTO-RETURN TURNTABLE MODEL AP-Q55/C SERVICE MANUAL

I. TECHNICAL DATA

Specifications for AP-D33/C and AP-Q55/C turntables, covering performance and physical attributes.

II. DISMANTLING OF UNIT

Step-by-step guide on how to disassemble the turntable for servicing or repair.

III. CONTROLS

Identification and explanation of all user-accessible controls and buttons on the AP-D33/C model.

IV. PRINCIPAL PARTS LOCATION

Diagrams showing the placement of major internal components for the AP-D33/C model.

V. VOLTAGE AND CYCLE CONVERSION

Instructions for converting the unit's power voltage and cycle settings for different regions.

VI. MECHANICAL ADJUSTMENTS

Procedures for adjusting stylus pressure, overhang, auto-return, and arm lifter mechanisms.

VII. ELECTRICAL ADJUSTMENTS

Steps for calibrating electrical parameters like offset voltage, torque difference, and speed.

VIII. CLASSIFICATION OF VARIOUS P.C BOARDS

Lists and details of Printed Circuit Boards for AP-D33/C and AP-Q55/C models.

SECTION 3 PARTS LIST

HOW TO USE THIS PARTS LIST

Guide on how to interpret and use the parts list for ordering components and parts.

AC INLET SYSTEM

Information about the AC inlet system and cord set compatibility for different regions.

SECTION 4 SCHEMATIC DIAGRAM

SCHEMATIC DIAGRAM

Technical diagrams illustrating the electrical circuitry and component interconnections.