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JVC QL-A75

JVC QL-A75
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JVC QL-A75 Specifications

General IconGeneral
MotorDC Servo Motor
Drive systemBelt Drive
Speeds33 1/3, 45 RPM
Overhang15 mm
CartridgeNot Included
Wow and flutter0.025% (WRMS)
PlatterAluminum
TonearmStatic balance type
Tracking force range0 to 3g
Signal to noise ratio78 dB (DIN-B)

Summary

1. Specifications

2. Service Precautions

3. Main Parts Locations

4. Removal Procedures

4-(1) Removal of Tonearm Base Unit

Step-by-step guide for safely removing the tonearm base unit from the turntable.

5. Adjustment Procedures

5-(1) Tonearm Height Adjustment

Procedure to set the correct vertical tracking angle by adjusting tonearm height.

5-(2) Tonearm Elevator Height Adjustment

How to adjust the tonearm elevator for proper stylus tip to record surface clearance.

5-(3) Overhang Adjustment

Method for aligning the cartridge overhang for optimal tracking and reduced distortion.

5-(4) Tracking Force Adjustment

Steps to properly set the stylus tracking force using the counterweight and dial.

5-(5) Anti-skating Adjustment

Instructions for setting the anti-skating force to counteract lateral tracking error.

5-(6) Auto-up Position Adjustment

Procedure to calibrate the automatic tonearm lift-up mechanism at the end of playback.

5-(7) Motor Phase Adjustment

Guidance on adjusting the motor phase for stable quartz-locked rotation, especially after IC replacement.

6. Block Diagram

7. Repair of Tonearm Elevator

8. Cleaning and Repairing the Cabinet

9. Troubleshooting

9-(1) When Tonearm Action is Abnormal

Diagnostic steps for resolving issues with the tonearm's automatic movement or manual operation.

9-(2) When Turntable Operation is Abnormal

Troubleshooting guide for when the turntable motor or platter fails to operate correctly.

10. Connection Diagram

11. Exploded Views and Part Numbers

11-(1) Platter and Cabinet

Exploded view and part list for the turntable's platter, base, and cabinet components.

11-(2) Tonearm

Exploded view and part identification for the tonearm assembly and its parts.

11-(3) Mechanism Assy

Exploded view and part list for the turntable's internal mechanism assembly.

12. Printed Circuit Board Assy and Parts List

12-(1) MDC-955 A Motor Drive P.C. Board Assy

Detailed parts list and diagram for the motor drive printed circuit board.

12-(2) TXX-375 Main Amplifier, Power Supply & Control P.C. Board Assy

Parts list and diagram for the main amplifier, power supply, and control PC board.

13. Packing Materials and Part Numbers

14. Accessories List

15. Power Cord Connections in Different Areas

How to Handle the Solderless Connector

Procedure for safely replacing or installing solderless connectors for power cord attachments.

16. Parts List with Specified Numbers for Designated Areas

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