Brand: YAMAHA
Category: Audio/Video
Document Type: Manual
Language: EN
Manual for PW3000MA
Uploaded: Nov. 21, 2025, 7:05 p.m.
Manual Publish Date: 2000-02-01
Warranty Information
Components with special characteristics are marked and must be replaced with parts of equal specification.
Operation Summary
This manual provides comprehensive information for the YAMAHA PW3000MA power supply. It includes specifications, panel layouts, disassembly procedures, circuit diagrams, inspections, and parts lists. Key operations involve connecting the unit, checking output voltages, ensuring monitor LEDs and fans are operational, and verifying transformer function. The manual also details the internal components and their locations.
Troubleshooting and error codes
| No. | Check Item | Condition | Details | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | CONNECTION | Connect the measuring resistance. (Fig. 1) | Diagram provided in manual. | ||||||||||
| 2 | OUTPUT VOLTAGE | Check voltage at both ends of load resistance within the specified range. Use a voltmeter with 100k ohms or more impedance. |
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| 3 | MONITOR LED | Check that all monitor LEDs light up. | As described in section 2. | ||||||||||
| 4 | FAN | Check that the fans on the right and left are running. | As described in section 2. | ||||||||||
| 5 | OUTPUT VOLTAGE (PARALLEL DC INPUT) | Check that the voltages obtained at the PARALLEL DC INPUT terminal are the same as those in section 2. | Note: Do not connect a load resistance to the DC OUT terminal and the PARALLEL DC INPUT terminal at the same time. | ||||||||||
| 6 | TRANSFORMER | Check that the transformer does not beat (hum) in the state as described in section 2. | None |