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Pioneer PL-L1000 Service Manual

Pioneer PL-L1000
71 pages
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Pioneer PL-L1000 Specifications

General IconGeneral
PlatterAluminum die-cast
TonearmLinear tracking
Speeds33 1/3, 45 RPM
MotorDC servo motor
Wow and Flutterless than 0.025% WRMS
Signal-to-Noise Ratio78 dB (DIN-B)

Summary

Specifications

Motor and Turntable

Details on drive system, motor, platter, speeds, and wow/flutter.

Rotational Characteristics

Specifications for build-up time, speed deviation, and speed stability.

Speed Drift

Information on speed variation due to time and temperature changes.

Tonearm

Type, effective arm length, overhang, and weight of the tonearm assembly.

Subfunctions

Lists automatic functions like auto lead-in, auto-return, and quick play.

Semiconductors

List of ICs, transistors, diodes, and Hall elements used.

Miscellaneous

Power requirements, dimensions, weight, and accessories included.

Panel Facilities

POWER SWITCH

Description of the main power on/off switch functionality.

QUARTZ LOCK INDICATOR

Explains the function of the quartz lock indicator light.

SPEED SWITCH

How to select between 33-1/3 and 45 RPM speeds.

DISC SIZE SWITCH

How to set the turntable for different record sizes (12", 10", 7").

REPEAT SWITCH

Functionality of the repeat play mode switch.

ARM ELEVATION SWITCH

Controls the manual raising and lowering of the tonearm.

START/STOP SWITCH

Initiates auto play and stops the operation.

REMOTE OPERATION KNOB

Knob for manual remote control of tonearm movement.

TONEARM

Explanation of the tonearm's purpose and manual/remote operation.

ARM CLAMP

Secures the tonearm during transport or storage.

ARM REST

Holds the tonearm pipe when not in use.

PLATTER/RUBBER PLATTER MAT

Discusses the platter's rotation and the mat's function.

DUST COVER

Protective cover for the turntable and records.

Disassembly

PANEL

Steps to remove the main panel and top cover.

D.D MOTOR

Procedure for removing the direct-drive motor.

TONEARM

Instructions for disassembling and removing the tonearm.

CdS DETECTOR AND LAMP

Steps for removing the CdS detector and lamp components.

Parts Locations

Exterior Parts Locations

Visual identification of external parts and their part numbers.

Internal Component Locations

Visual identification of internal components like motor and control assembly.

Block Diagram

Tonearm Control Stage

Details the operation of the tonearm control logic.

End Detector Stage

Describes the circuit for detecting the end of a record.

Arm Elevation Control Stage

Explains the logic for raising and lowering the tonearm.

Size Selector Stage

Logic for automatic switching based on record size.

Repeat Control Stage

Functionality of the repeat play mode control.

Lowering Position Detector, Plunger Control Stage, and Descend Signal Generator

Circuitry for detecting record position and controlling descent.

Display Stage and Plunger Driver

Circuit for LED display and plunger operation.

Manual Drive Stage

Operation of the manual tonearm movement stage.

Tracking Sensor Stage and Tonearm Driver Stage

How the tracking sensor drives the tonearm.

D.D. Motor Control Stage and D.D. Motor Stop Control

Control logic for the direct-drive motor.

Circuit Descriptions

Full Auto Logic

Detailed description of the full automatic operation logic.

Tonearm Drive

Description of the circuit responsible for tonearm movement control.

Adjustments

D.D. MOTOR OPERATING POINT ADJUSTMENT

Adjusting the motor's operating point for stable rotation.

AUTO LEAD-IN TIMING ADJUSTMENT

Setting the correct timing for the tonearm's auto lead-in.

END SENSOR SENSITIVITY ADJUSTMENT

Adjusting the sensitivity of the end-of-record sensor.

END TIMER ADJUSTMENT

Calibrating the timer for end-of-record detection.

TRACKING SENSOR ZERO POINT ADJUSTMENT

Setting the zero point for the tracking sensor.

TRACKING SENSOR GAIN ADJUSTMENT

Adjusting the gain of the tracking sensor.

LEAD-IN AND RETURN SPEED ADJUSTMENT

Setting the correct speeds for lead-in and return operations.

Timing Chart

LEAD IN PLAY

Timing sequence for the lead-in and playback operation.

REJECT

Timing sequence for the reject (return) operation.

REPEAT

Timing sequence for the repeat playback function.

Troubleshooting

Circuit Block Troubleshooting

Guides for diagnosing issues within the device's electronic circuits.

Mechanism Block Troubleshooting

Guides for diagnosing issues related to the turntable's mechanical components.

Exploded Views

EXTERIOR

Visual breakdown of the turntable's external components.

TONEARM

Visual breakdown of the tonearm assembly.

EV MECHANISM

Visual breakdown of the EV mechanism components.

BOTTOM PLATE

Visual breakdown of the turntable's bottom plate and associated parts.

Packing

Parts List

List of items included in the packing for shipment.

Accessories

List of included accessories such as tools and adapters.

Schematic Diagram (HET,HBT MODEL)

P.C. BOARD CONNECTION DIAGRAM (HET,HBT MODEL)

Parts List of P.C. BOARD ASSEMBLY (HET,HBT model)

SEMICONDUCTORS

List of semiconductor components used on the PCB.

RESISTORS

List of resistors used on the PCB with their part numbers.

CAPACITORS

List of capacitors used on the PCB with their part numbers.

Schematic Diagram (S/G model)

P.C. BOARD CONNECTION DIAGRAM (S/G model)

Parts List of P.C. BOARD ASSEMBLY (S/G model)

SEMICONDUCTORS

List of semiconductor components used on the PCB for S/G model.

RESISTORS

List of resistors used on the PCB for S/G model.

CAPACITORS

List of capacitors used on the PCB for S/G model.

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