Heathkit AA-1214 User Manual

COMPONENT HEATH MANUFACTURER'S
PART NUMBER
PART NUMBER
Ql02L, Ql04L, Ql09L,
Ql02R, Ql04R, Ql09R 417-201 X29A829
QlOlL, Ql03L,
QlOl R, Ql03R 417-213
2N5249A
Ql05L, Ql06L,
Ql05R, Ql 06R 417-221 TZ582
Q201L, Q201R 417-222 2N5308
Ql 07L, Ql07R,
Ql08L, Ql08R,
Qll 4
417-110
S2090
QllOL, QllOR,
QlllL, QlllR
417-298
TlP41B
!Cl 01
442-41 739
U6A773939
SN76131N
-
64
BASE DIAGRAM
FLAT
OR
~~
[CB [CB
~ :
a
\\\ [
B
C
1
7
onnnnnn
t
BO TTOM
V I [ W
½luuuuuy
~ HEATHKIT I
=tMttM@MI
NOTES:
l. RESISTOR AND CAPACITOR NUMBERS ARE IN THE FOLLOWING GROUPS.
101-199 PARTS ON THE AMPLIFIER CIRCUIT BOARD.
201-299 PARTS ON THE TONE CIRCUIT BOARD.
2. RESISTORS AND CAPACITORS ARE DIVIDED AS FOLLOWS.
ODD NUMBERS ARE IN THE LEFT CHANNEL CIRCUIT.
EVEN NUMBERS ARE IN THE RIGHT CHANNEL CIRCUIT .
3. REFER TO THE CHASSIS PHOTOGRAPH AND CIRCUIT BOARD X-RAY VIEWS FOR
THE PHYSICAL LOCATION OF PARTS.
4. ALL RESISTORS ARE 1/4 WATT UNLESS MARKED OTHERWISE. RESISTOR
VALUES ARE IN OHMS (K = 1000, M = l ,000,000).
5. ALL CAPACITOR VALUES LESS THAN l ARE IN uF. ALL CAPACITOR VALUES
OF l OR ABOVE ARE IN pF UNLESS MARKED OTHERWISE.
6. THE SWITCHES ARE SHOWN WITH THE AMPLIFIER IN THE PHONO POSITION.
7. DC VOLTAGE MEASUREMENTS WERE TAKEN WITH A HIGH IMPEDANCE INPUT
VOLTMETER FROM THE POINT INDICATED TO THE CHASSIS GROUND. VOLTAGES
MAY VARY ±20 %. LINE VOLTAGE 240 VAC.
8. ALL VOLTAGE READINGS WERE MADE UNDER NO SIGNAL CONDITIONS AND MAY
VARY WITH A SIGNAL APPLIED.
9.
10.
11.
12.
13.
14.
15 .
THIS SYMBOL INDICATES A DC VOLTAGE.
THIS SYMBOL INDICATES CIRCUIT BOARD GROUND.
THIS SYMBOL INDICATES CHASSIS GROUND.
THIS SYMBOL WITH A LETTER IN IT INDICATES A WIRE CONNECTED
TO THE CIRCUIT BOARD.
THIS SYMBOL WITH A NUMBER IN IT CORRESPONDS TO A TEST POINT
IN THE
11
STAGE-BY-STAGE HUM INJECTION" SECTION.
THIS SYMBOL WITH A NUMBER IN IT INDICATES THAT THE PART IS
LOCATED ON THE CHASSIS, EVEN THOUGH THE NUMBER MAY SUGGEST
THAT THE PART IS LOCATED ON THE CIRCUIT BOARD.
AN ARROW ACROSS THE WIPER OF A CONTROL INDICATES THE
CLOC K WISE ROTATION OF THE CONTROL.

Heathkit AA-1214 Specifications

General

Brand	Heathkit
Model	AA-1214
Category	Amplifier
Language	English