Fisher 700-T User Manual

| 1489-3 DRIVER |
PARTS DESCRIPTION LIST
CAPACITORS
Symbol Description Part No.
C851, 852 Electrolytic, 25uF, 15V C508637-6
C853 Electrolytic, 200uF, 35V C50483-7
RESISTORS
Deposited carbonin ohms, 5% tolerance, 4 watt,
unless otherwise noted, K=Kilohms, M=Megohms.
Symbol Description Part No.
R851 15K R50DC1534
R852 8.2K R500C8225
R853 Composition, 3.9K RC20BF3925
R854 56K R50DC563J
R855 . 220 R50DC221J
R856 Composition, 82° RC20BF8205
R857 Por., 300, 20%, Center Voltage
Adjust R50B499-1
R858 Pot., 300, 20%, Output Bios Adjust R50B499-1
R859 2.2K R500C2225
R860 . 3.3K R50DC332J
R861 Composition, 82 RC206F8205
R862 56K R500C563J
R863 Composition, 120 “ RC20BFI215
R864 Composition, 82 RC20BF820J
MISCELLANEOUS
Symbol Description Part No,
CR85) Diode, Silicon S$1D50894
. CRB52,853 Diode, Zener, 6.8V, 5%, 1W ZR50921-2
CR854,855 Diode, Silicon $1D50894
Q851, 852 Transistor, TRIO005S ° TR1005
Q853 Transistor, TR1004 TR1004
POWER AMPLIFIER CENTER
VOLTAGE ADJUSTMENT
@ Connect two 10K, 1% resistors in series across capacitor
C19 (2500uF). Connect the common lead of a DC VTYM to the
junction of the two resistors,
@ Connect OC VTVM to the junction of resistors R37 and
R39. Adjust Center Voltage Adjust Pot, R857 on left channel
driver board for meter reading of 0 +0.5 VDC.
@ Connect DC VTVYM to the junction of resistors R38 and R40,
Adjust Center Voltage Adjust Pot. R857 on right channel
driver board for meter reading of 0 +0.5 YDC.
@ Disconnect 10K resistors.
POWER AMPLIFIER IDLING
CURRENT ADJUSTMENT
NOTE: This adjustment is to be performed only after com-
pleting Center Voltege Adjustment.
@ Connect OC VTVM across resistor R37, Adjust nat Bias
Adjust Pot. R858 on Jeft channel driver board for meter read-
ing of 40 #10mV OC.
@ Connect DC VTVM across resistor R38, Adjust Output Bias
Adjust Pot. R858 on right chonnel driver board for meter read
ing of 40 t10mV OC.
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ir —@ eer arenes ea oe OF Q3(Q1)
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Raga O OF Q3 (QI)
INS 388
* FOR VALUE SEE PARTS LIST P1489 -2
Pi4a9-3
%* SEE SCHEMATIC i
s3-semiost(-t)

Fisher 700-T Specifications

General

Brand	Fisher
Model	700-T
Category	Receiver
Language	English