Marantz MM9000 Service Manual

Power Amplifier
MM9000
310J855010 MIT
3120 785 22220
First Issue 1999.11
TABLE OF CONTENTS
SECTION PAGE
1. TECHNICAL SPECIFICATIONS ................................................................................................................. 1
2. IC DATA ...................................................................................................................................................... 1
3. BLOCK DIAGRAM ....................................................................................................................................... 2
4. WIRING DIAGRAM ..................................................................................................................................... 3
4. SCHEMATIC DIAGRAM .............................................................................................................................. 5
6. PARTS LOCATION (Pattern Side) ............................................................................................................ 10
7. EXPLODED VIEW AND PARTS LIST ....................................................................................................... 19
8. ELECTRICAL ADJUSTMENT ................................................................................................................... 23
9. TECHNICAL DESCRIPTION ..................................................................................................................... 25
10. ELECTRICAL PARTS LIST ....................................................................................................................... 26
Service
Manual
MM9000 /K1G, /N1G, /S1G
/N1B, /U1B
R
M
MM9000
Printed in Japan
Please use this service manual with referring to the user guide ( D.F.U. ) without fail.
FRONT L CENTER RONT R
POWER
SURR L
PEAK
ST NDBY
SURR R
ON OFF
5CH POWER AMPL F ER MM9000
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Marantz MM9000 Specifications

General

Type	Power Amplifier
Number of Channels	5
Signal-to-Noise Ratio	110 dB
Input Sensitivity	1.2 V
Damping Factor	100
Total Harmonic Distortion (THD)	0.03%
Input Impedance	20k ohms
Power Output (8 ohms)	150 W (20 Hz - 20 kHz, 0.08% THD)
Frequency Response	8 Hz - 100 kHz (+0, -3 dB)

Summary

Marantz Design and Service

Technical Specifications

IC Data

Block Diagram

Wiring Diagram

Schematic Diagram

Parts Location on Pattern Side

Exploded View and Parts List

Electrical Adjustment Procedures

DC Offset Adjustment

Adjusts the DC offset of the amplifier's output.

Idling Current Adjustment

Adjusts the bias current for amplifier stages.

Thermostat Circuit Confirmation

Verifies the function of the thermostat circuit.

Cooling Fan Confirmation

Checks the cooling fan operation and sensors.

Technical Circuit Description

Electrical Parts List