Fisher CA 856 Service Manual
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Extracted text from Fisher CA 856 Service Manual (Ocr-read)
Page 1
SERVICE MANUAL - FISHE
INTEGRATED
STEREO AMPLIFIER C A_856
IU.S.A.)
132311 21
SPECIFICATIONS
POWER AMPLIFIER SECTION High Filter (Above 7 kHz) -6 dB/Oct.
Minimum RMS sine wave power per channel Subsonic Filter (Below 30 Hz) -1 2 dBrOct.
within stated bandwidth at no more than stated Loudness Contour (100 Hz/10 kHz) +8 dB/+4 dB
distortion and with 8-ohm load 100 Watts Hum 8. Noise (IHF Short Circuit. A Network)
Power Bandwidth 20 Hz - 20 kHz Phono 65 dB
Total Harmonic Distortion 0.09 It; Tape Monitor 85 dB
|.M. Distortion 0.09 as Tu ner/Video/Aux/CD 85 dB
Speaker Damping > 20 GENERAL
PREAMPLIFIEB SECTION Power Requirements (50/60 Hz) 120 VAC +10 it.
Frequency Response Power Consumption 470 Watts
Phono (RIAA) :1 dB AC Outlets 1
VideorAux (20 Hz - 20 kHz} :1 dB Dimensions (W x H x D) 17.33 x 4.25" x124"
Input Sensitivity and Impedance Weight (approx.) 16.5le.
Phono 2.5 mV/5O kt).
Tape Monitor 1 50 mil/50 k0
Tu ner/Video/Aux/CD 150 mV/SO k1!
Phono Max. Input Capability 150 mV
- Specifications subject to change without notice.-
WM-17776
Page 2
CONTENTS
Functional Block Diagram ....................................................................... 2
Cabinet & Chassis Exploded View ............................................................ 3,4
Cabinet 8 Chassis Parts List .................................................................... 5
Power Amplifier Adjustment ..................................................................... 6
Integrated Circuit Block Diagram ............................................................. 6.7
P.C.Board Parts List .................................................................... 8,9,10,11
Printed Circuit Board (Bottom View) ................................................... 12.13.14
PointtoPointWiringDiagram ................................ 15.16
Schematic Diagram .......................................................................... 17,18
Semiconductor Lead Identification ............................................................ 19
FUNCTIONAL BLOCK DIAGRAM
FUNCTION
E0. Amp. ON
PHONO @ . 010
on .
TUNER©-o-<:\o
OFF
ON .
co @ ..
cko OFF
AUX ON .
VIDEO OFF
TAPE © ..
REC our
BALANCE VOLUME
I
E Orr
Model Eo-ase I
TAPE Graphic E0. Amp.
MON'TOR I Hthilter
° : ' g
5 III I
I
-l
O 0
Graphic EO. VFl. . .
L __________ J Low Filter
f
TAPE
PLAY BACK Meter Drive IC A}, p0wc,
A Level Meter
W
Speaker
System
A
Power Amp Speaker -
Selector .
. Protector
Protector FUSE
Circuit
Flighl
LOUDNESS Charm Headphone