Phase Linear 3000 Series Two Service Manual

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3000 SERIES TWO
PREAMPLI FIER

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-l-*
flail 57(5)!!!

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3000 SERIES TWO PREAMPLIFIER

SERVICE MANUAL

CONTENTS
l-O. Specifications ....................... . ...... 3
2-0. Schematics and Diagrams ..................... 5
3-0. Circuit Descriptions ............. . .......... 14
4-0. Disassembly Procedure ....................... 17
5-0. Test Procedure .............................. 20
6-0. Troubleshooting Guide .................. .....23
7-0. Parts List .................................. 32
8-0. Service Bulletins and Supplements .. ......... 33

***********k********** CAUTION ***********************

THIS MANUAL IS INTENDED FOR USE ONLY BY QUALIFIED SERVICE
PERSONNEL. HAZARDOUS VOLTAGES MAY BE ENCOUNTERED IN THE
SERVICING OF THE 3000 SERIES TWO PREAMPLIFIER. USE
EXTREME CAUTION: READ ALL INSTRUCTIONS CAREFULLY.

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l-l.2.

LOW FILTER CHARACTERISTICS: 3-pole Butterworth with -leB/

octave (-60dB/decade) slope.
Corner Frequency: 15Hz

Attenuation: 20Hz - 0.5dB
lSHz - 3.0dB
4H2 - 35dB

HEADPHONE AMPLIFIER:
Power Output: 200mw into 8 ohms with less
than 0.07% THD from 20Hz-20K Hz,
both channels driven.
Signal-to-Noise: greater than 90dB re ZOOmW output.

General

POWER REQUIREMENTS: 120V 60Hz (USA & Canadian models) or
100-120/220-240V AC, 50/60Hz.

POWER CONSUMPTION: 8 Watts (70mA)

AC OUTLETS: 2 unswitched, 600 watts maximum; 4 switched,
600 watts max.

DIMENSIONS: 19"w X 3%"h X 8"d (48.3cm X 9cm X 20.3cm)

WEIGHT: lOlbs. (4.5kg)

SEMICONDUCTOR COMPLEMENT: 16 Integrated Circuits, 22 Transistors,

37 Diodes, and 11 L.E.D.'s.