Marantz 2275 Service Manual

Page 2

5,!

,u

Ian-ant:

TABLE OF CONTENTS

SECTION PAG E
Introduction
Service Notes
AM Tuner
FM Tuner
Phone and Tone Amplifiers -----
Power Ampfifier ...................
Power Protection Circuit
Speaker Protector Relay Circuit -------
Suggestions for Troubleshooting the Power Amplifier
Test Equipment Required for Servicing ------------
AM Alignment Progedures ...............................
FNLAIignment Procedures ---------------
Stereo Separation Alignment
Muting Circuit Alignment
FM Dolby Level Adjustment
Audio Adjustments -------
Parts List
Technical SpecifIcatIons -------------
Servicing Informations for European Model

mmoooocnuuoammmolnaa-I

35~37,39 a;

I
LIST OF ILLUSTRATIONS K
: FIGURE PAGE
' 1 Block Diagram of the HA1156 4
2 Dia| Stringing ................................ 'IO
3 Front Panel Adjustments and Component Locations ....... 11
4. Main Chassis Component Locations (Top View) ----- 11
5. Rear Panel Jacks and Component Locations 12
6 Main Chassis Component Locations (Bottom View) 12
7. FM Front End Assembly P100 Component Locations 13
8. AM Tuner Assembly P150 Component Locations ................. 13
9. FM IF Amplifier Assembly P200 Component Locations 13
10. MPX Stereo Decoding Amplifier Assembly P300 Component Locations 14
11. Dolby FM Level Amplifier Assembly PC01 Component Locations 14
12. Phone Amplifier Assembly P400 Component Locations 14
13. Power Amplifier Assembly P700 Component Locations 15
14. Power Supply and Protection Relay Circuit Assembly P800 Component Locations 15
15. Pre and Tone Amplifier Assembly PE01 Component Locations ------------------------------------ 16
16. Dolby FM, Mono L, R, Multipath and Tape Monitor Switches Assembly
P801 Component Locations 15
17. Muting, Speaker, Loudness, Power, Hi and Low FIIter SWItches PT01
Component Locations 16
i 18. Function Lamps Assembly PY01 Component Locations 17 )3
~53 19. Muting Level and Antenna Attenuator Assembly PU01 Component iv, {

Locations
. I 20 Dial Scale Illuminator Assembly P201 Component Locations
21. Exploded Mechanical Diagram