Mcintosh c 35 service manual

Page 1

3??qu '

mafia:

C35

SYSTEM CONTROL CENTER

i

W J lflllnlush ' "fl 9

,p ,W Q (.30 svsw'em CONTROL mmm: i: Q 1

W W

i

i

i

w K m m lsfatfitzi i

.,©©©©©© i

o i!!---i Z O i

1! WC

i

i

CONTENTS

Performance Specifications ........................ 2
Mechanical Views ............................... 3-4

General Notes ................................... 4

Block Diagram .................................. 5-6 i

Section Locations ................................ 6
Front Panel and Trim Parts List .................... 7
Installation Hardware Parts List .................... 7
Section 1-interconnection Diagram .............. 7-9
Section 2-Signai Switching (Left channel) ....... 10-14
Section 3-Signal Switching (Right channel) ..... 15-19
Section 4-input and Mode Switches .............. 20
Section 5-Volume Control Switches .............. 21
Section 6-Control ............................ 21-25

Section 7-Status Display ..................... 26-28 '
Section 8--Preamp and Power Supply ........... 2931
Section 9-Outputs ........................... 32-36
Section 10-Backup Power Supply .............. 37438
Repacking Instructions ........................... 39

IIIIIntus Service Manual

Page 2

Performance
Specifications

FREQUENCY RESPONSE
+0, -0.5di3 From 20Hz to 20,000Hz

RATED OUTPUT
2.5V

OUTPUT IMPEDANCE
Balanced 600 ohm
Unbalanced 600 ohm

MAXIMUM VOLTAGE OUTPUT
Main and Tape Output- 8V from 20 to
20,000Hz

TOTAL HARMONIC DISTORTION
0.002% maximum from 20 to 20,000HZ at
rated output

SENSITIVITY
Phono- 2.5mV for 2.5V rated output
(0.5mV IHF High Levele ZBOmV for 2.5V
rated output (SOmV IHF)

SIGNAL TO NOISE RATIO, A-WEIGHTED
Phones 90dB below 10mV input (8th
IHF)

High Level- iOSdB below rated output
(95dB IHF)

MAXIMUM INPUT SIGNAL
Phono- 90mV
High Level- 10V

INPUT IMPEDANCE
Phonry 47K ohms and 65oF capacitance
High Leve1~ 22k ohms

VOLTAGE GAIN
Phono to Tape- 40(18
Phono to Main- 60dB
High Level to Tape- OdB
High Level to Main- 20dB

EOUALIZER CONTROLS
Variable TZdB boost to erB cut at
center frequencies of 30, 150, 500, 1500
TORHZ

GENERAL INFORMATION

SEMICONDUCTOR COMPLEMENT
b9 Bipolar Transistors
73 Field Effect Transistors
35 Integrated Circuits
HZ Diodes

AC POWER OUTLETS
4 Black, switched, and 1 red,
unswitched, 1500 watts total capacity

POWER REQUIREMENTS
120 Volts, 50/60HZY 25 watts

MECHANICAL INFORMATION

SIZE:
Front panel measures T6-I/8 inches Wide
(1:1 cm) by 57/16 inches high (13.8
cm) by 13 inches deep (33 cm),
including connectors. Knob clearance
required is 1-3/8 inches (3.5 cm) in
front of mounting panel.

WEIGHT
18 pounds (8.2 kg) net, 30 pounds (13.6
kg) in shipping carton.