McIntosh MA 5100 - Measurement Conditions and Component Specifications; Preamp Section Circuitry; Preamp Section Printed Circuit Board Diagram

Unless
otherwise specified,
resistance values
are in
ohms, L/2
watt,
and
I0% tolerance. Capacitance
values
smaller than I
are
in
microfarads
(mfd);
values
greater
than t
are
in
pico-
farads
(pF.
)
.
The terminal numbering
of rotary switches
and
printed
circuit
board
wires is
for reference
only.
A11
voltages
are measured under
the following
conditions:
1. Use of an
lO-megohm
input
impedance
VTVM voltmeter.
2.
AII voltages
!LO%
with
respect to
chassis
ground.
3.
No signal at input
terminals.
4.
AC
input at
LL7
volts, 50/60 cycles.
5. Front
panel
controls
at:
Input Selector
AIIX
Mode
Selector STEREO
Tape
Phase
Speaker
Power
LF
Filter
HF
Filter
Iroudness
NOR}iIAL
oo
ON
ON
FLAT
FI,AT
NORMAL
Volume
Balance
Bass
TrebIe
Comp
IVIAX
ZERO
FI,AT
FI,AT
RTAA
PREAMP, SECTION PRINTED
CIRCUIT BOARD
O43-723
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