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Nakamichi PA-304 Service Manual

Nakamichi PA-304
13 pages
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service
Manual
Nakamichi
Nakamichi
PA-304
Mobile
Power
Amplifier
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Nakamichi PA-304 Specifications

General IconGeneral
Total Harmonic Distortion0.05%
Signal-to-Noise Ratio100 dB
Input Impedance20 kOhms
Channels4
RMS Power at 4 Ohms150W x 4
Input Sensitivity0.2V - 5V
Damping Factor>200
Power Output150W x 4
Frequency Response10Hz - 40kHz
Crossover Frequency50Hz - 250Hz
Bass Boost0 to +18 dB

Summary

1. GENERAL

1.1. Notes on Order of Spare Parts

Details on ordering specific parts not included with PCB assemblies.

3. ADJUSTMENTS

3.1. Parts Location for Adjustment

Identifies VR potentiometers and test points on PCBs for adjustment procedures.

3.2. Adjustment Procedures

Step-by-step instructions for setting output voltage and idling current.

4. MECHANISM ASS'Y AND PARTS LIST

4.1. Synthesis

Exploded view and parts list for the main assembly and sub-assemblies.

4.2. TR Block Ass'y B (A01)

Parts list and diagram for TR Block Assembly B.

4.3. TR Block Ass'y C (A02)

Parts list and diagram for TR Block Assembly C.

4.4. TR Block Ass'y A (A03)

Parts list and diagram for TR Block Assembly A.

5. MOUNTING DIAGRAMS

5.1. Power Supply P.C.B. Ass'y

Diagram showing the mounting of the Power Supply PCB.

5.2. Main P.C.B. Ass'y

Diagram showing the mounting of the Main PCB.

5.3. Fuse P.C.B. Ass'y

Diagram showing the mounting of the Fuse PCB.

5.4. BTL Switch P.C.B. Ass'y

Diagram showing the mounting of the BTL Switch PCB.

6. WIRING DIAGRAM

7. SCHEMATIC DIAGRAM

8. BLOCK DIAGRAM

9. SPECIFICATIONS

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