Fisher CA 2221 Service Manual

Page 1

CONTENTS

Functional Block Diagram ............................................. 2
Specifications ....................................................... 3
Cabinet & Chassis Exploded View ....................................... 4
Parts List .......................................................... 5
Recommended Test Equipments ........................................ 6
Harmonic Distortion Test .............................................. 6
Adjustment of Power Amplifier P.C.Board ................................. 7
Printed Circuit Board (Bottom View) & Parts List ............. 8,9,10,11,12,13,14
Point to Point Wiring Diagram ....................................... 15,16
Schematic Diagram ................................................ 17,18
Semiconductor Lead Identification ..................................... 19

FUNCTIONAL BLOCK DIAGRAM

Power Level

V

Function Tme Mode Volume Tone AMP Power AMP

E0 AMP SW Monitor SW Tone SW
PHONO D

33'3" STK~0040

SPEA KE RS
SYSTEM

Bass Treble

TUNER

AUX

TAPE 1

TAPE 2

Page 2

SPECIFICATIONS

AMPLIFIER CA-2221

POWER AMPLIFIER SECTION
Continuous RMS sine wave power per
channel within stated bandwidth at no 30 Watts
more than stated distortion and with
an 8 ohm load.
Power Band Width 20 Hz - 20 kHz
Total Harmonic Distortion at Hated Power 0.03 36
IN. Distonion 0.03 %
Speaker Damping 50
PREAMPLIFIER SECTION

Phone (20 Hz - 20 kHz) :05 dB
Frequency Response

Aux. (20 Hz -20 kHz) $0.5 dB
Input Sensitivity Phono 2.5 mV/50k n

and Impedance Tape Monitor 1

150 mV/50k fl

Tape Monitor 2

150 mV/SOk SZ

Tuner 150 mV/SOk (2
Auxiliary 150 mV/SDk a
Phone Max. Input Capability
Phone 230 mV
Tone Control Bass (100 Hz) 210 dB
TreblelIOkHZ) :IOdB
Loudness Contour (100Hz/10kH2) +8 dB/+3 dB
Hum and Noise Phone 80 dB
(IHF Short Circuit, .
A Net Work) Tape Monitor 95 dB
Tuner 95 dB
Auxiliary 95 dB
GENERAL
AC: 110/720 V
Power Requirements
200 W/250 VA

Dimensions (W x D x H)

440 x 310 x 89.5 mm

Weight (approx)

7.6 kg

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