Mcintosh c 2200 service manual

Page 1

:w C2200

TUBE PREAMPLIFIER

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CONTENTS

Balanced Schemafil: and PCB .
Tone Schematic and PCB
Data Schematic and PCB .
Pushbulton Schema: and PCB 35 - 36

Performance Specifications 2
2
3
3
4 - 6 Meter Lamp Schematic and PCB 35 , 35
7 s
- 2
a

Nuxes .....
Rear Panel ,
Section anafian
Block Diagram ,
lnterconnectiun Diagram
Main Schematic and PCB
Display Schemafic and PCB

29-32
31»32
33x34

Pans Lisl..... 37 - 42
Exploded Views and Pans Liss 43 V 45

Repacking Instruction 47

SERVICE MANUAL

Page 2

PERFORMANCE SPECIFICATIONS

Frequency Mneme
+0, -05dB from 20sz 20.000141

Total Harmonic Dislnru'on
008% from 20Hz m 20,000HZ

Signal To Noise Ratio
Phone. ZOdB
High Level. 93dB

Maximum Voltage Output
SVn-ns Unbalancod. 16Vrms Balanced

Output Impulnnm
250 ohms Unbalanced, 500 ohms Balanced

Sensitivity
Phcno MM. 4.4mV for 2.5V rated Output
High Level. 450mV for 2.5V rated output

hipulmpedance
Phone MM. 47k ohms. 65pF
High Level, 22k Unbalanced. 47k Balanced

Maximum Input Signal
Phone MM,50mV (3 1.000111
High Level. 5V Unbalanced. 10V Balanced

Power Requirements

lOOVolLs, 50/601-[2 at 70 watts
110 Volls, 50/60Hz a! 70 watts
120 Volts. SWSOHZ at 70 watts
220 Volts. 50/sz at 70 watts
230 Volts. 50/60Hz at 70 watts
240 Volts. 50/60Hz at 70 watts

Nmz: Ref :0 m: rear panel of th: C2200 far m: mm: voltage.

'lhheComplimem
Phone Circuitry:

2 - I2AX7A

2 - HAT/A

HighlevelCirwiu'y:
2»12AX7A
2- l2AT7A

Overall Dimensions
17- [12 inches (44,5cn1) W. 7-5/8 inchcs (19.37cm) H. 20
inches (,5c1n) D (including clearance for connectors)

Weight
26.75 pounds (1214) net. 47.75 pounds (21 .67kg) in
shipping canon

NOTES

. The heavy lines on the schematic denote the primary
signal path.

, Unless oLherwise noted. all voltage: indicated on the
schematics are measured under the following conditions:
a. AC input at 120 volts. 50/60Hz.
b. All voltages are +/-10% with respect to ground. A
high impedance (10 megaohm) voltmeter mus! be used.

4. On PC board drawings. Square pad indicates:
a. Polaximd Capacilm's ~ PosiLive
b Diodes , Calhnde
c. Olhexs , Pin 1

5. WARNING
Pans marked with the symbol have critical
chaxacterisfics. Use only replacement parts recom-
mended by the manufacturer.