Marantz MM8077 Service Manual

2
CONTENTS
ABOUT THIS MANUAL .............................................................3
What you can do with this manual ............................................3
Using Adobe Reader (Windows version) ..................................4
SAFETY PRECAUTIONS ..........................................................7
TECHNICAL SPECIFICATIONS ................................................8
DIMENSION ...............................................................................8
DISASSEMBLY ..........................................................................9
1. FRONT PANEL ASSY .........................................................10
2. CPU PCB ASS'Y .................................................................10
3. TRANS ................................................................................10
4. STBY.PCB ASS'Y-2 .............................................................10
5. INPUT PCB-2 ......................................................................11
6. INPUT PCB-1 ......................................................................12
7. POWER PCB ASSY ............................................................12
8. AMP UNIT ...........................................................................13
special mode ...........................................................................15
Special mode setting button ....................................................15
1. CPU Version check .............................................................16
2. Cooling FAN active ..............................................................17
3. SYSTEM ERROR ................................................................18
VERSION UPGRADE PROCEDURE OF FIRMWARE ............ 19
ADJUSTMENT .........................................................................25
TROUBLE SHOOTING ............................................................26
1. POWER ..............................................................................26
2. AUDIO .................................................................................27
BLOCK DIAGRAM ..................................................................30
LEVEL DIAGRAM ....................................................................31
PRINTED WIRING BOARDS ...................................................33
SCHEMATIC DIAGRAMS ........................................................40
WIRING DIAGRAM ..................................................................48
EXPLODED VIEW ....................................................................49
PARTS LIST OF EXPLODED VIEW ........................................50
PACKING VIEW .......................................................................51
PARTS LIST OF PACKING & ACCESSORIES .......................51
semiconductors ......................................................................52
1. IC's ......................................................................................52
PARTS LIST OF P.C.B. UNIT ..................................................60
FRONT P.W.B. UNIT ASS'Y ....................................................60
AMP B P.W.B. UNIT ASS'Y .....................................................61
AMP C P.W.B. UNIT ASS'Y .....................................................66
INPUT P.W.B. UNIT ASS'Y ......................................................72
POWER P.W.B. UNIT ASS'Y ...................................................76
CPU P.W.B. UNIT ASS'Y .........................................................79
STANDBY P.W.B. UNIT ASS'Y ................................................82

Marantz MM8077 Specifications

General

Damping factor	100
Amplifier class	-
Frequency range	10 - 100000 Hz
Output impedance	8 Ω
Input sensitivity	1200 mV
Audio output channels	- channels
Peak power per channel	- W
Signal-to-Noise Ratio (SNR)	105 dB
Total Harmonic Distortion (THD)	0.03 %
RMS power output per channel (8 Ohm)	150 W
Pre out port	No
Line inputs (RCA)	1
Speakers connectivity type	RCA
Purpose	Home
Material	Aluminium, Glass, Metal
Product color	Black
Channels quantity	7 channels
Connectivity technology	Wired
Power consumption (standby)	0.4 W
Power consumption (typical)	880 W

Weight and Dimensions

Depth	384 mm
Width	440 mm
Height	185 mm
Weight	18000 g