Marantz 74 PM40 - User Manual

MARA-00579
74 PM40/ isos B/02B/05B/07B
10B/12B/15B/17B
Stereo amplifier
PM-40 PM-40SE
TABLE OF CONTENTS
Section | Page
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5. HOW TO CHANGE THE SUPPLY VOLTAGE 01B/02B/05B/07B .............. eee eee ee 14
6. TEST EQUIPMENT REQIRED FOR SERVICING ............ 0.00 cece eee e ee ee ee eae ates wana 15
7: WOLTAGE CONVERSIONS cuts & Pee Bah ee Sens Ge SES or Res Ba oa ees Bs iat tee 15
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model PM-40/PM-40SE |
First issue: 1990
4822 725 50913 |

Summary

Block Diagram

Schematic Diagram and Parts Location

Exploded View and Parts List

Idling Current Adjustment

Procedure to adjust idling current, specifying test points and target values.

How to Change the Supply Voltage

Instructions for changing the unit's supply voltage between 220V and 240V.

Test Equipment Required for Servicing

Voltage Conversion

Electrical Parts List

Marantz 74 PM40 Specifications

General

Frequency response	10Hz to 50kHz
Input sensitivity	2.5mV (MM), 150mV (line)
Weight	8.5 kg
Total harmonic distortion	0.03%
Signal to noise ratio	> 100 dB
Power output	40W per channel into 8Ω