Heathkit AJ 1510A Schematic

Page 1

MASTER CIRCUIT BOARD
AND
WIRING SCHEMATIC

NOTES:

1.

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2.3:

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ALL RESISTORS ARE l/Z-WATT 57¢ UNLESS OTHERWISE SPECIFIED.

ALL CAPACITOR VALUES LARGER THAN LII ARE IN {IT UNLESS
OTHERWISE SPECIFIED. CAPACITOR VALUES LESS THAN 1.0
ARE IN HF,

REFER TO THE-CHASSIS PHOTOGRAPHSIANDCIRCUIT BOARD
X-RAV VIEWS'FOR THE PHYSICAL lDCATION 0F PARTS.

THE ARROW INDICATES CLOCKWISE ROTATION OT A CONTROL
OR SWITCN AS VIEWED FROM THE KNOB END OR AS SHOWN
FDR CIRCUIT BOARD CONTROLS. THE CIRCUIT BOARD CON»

CARD

CARD READER
READER c

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KEYBOARD FRI-PROGRAM
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KEYBOARD

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INDICATES A LETTERED WIRE CONNECTION ID A CIRCUIT
BOARDI WHEN THE SYMBOL IS NOT USED IN CONJUNCTION
WITH A RARTICULAR CIRCUIT, THE CONNECTION IS TO THE
MASTER CIRCUIT BOARD.

INDICATES A CIRCUIT BOARD GROUND.
INDICATES A CHASSIS GROUND.

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1-49 PARTS MOUNTED 0N

RESISTORS CAPACITORS, AND COMPONENT NUMBERS ARE IN
THE FOLLOWING GROUPS:

MASTER CIRCUIT BOARD.

PREIOAD DECODER CIRCUIT BOARD.

PLL-MULTIPLEXER DEMODULATOR CIRCUIT BOARD

SIT-7! CHASSIS,

10er " " POWER SUPPLV CIRCUIT BOARD.
200-299 " " " PROGRAMMER CIRCUIT BOARDI
300-399 " " "

400199 " " " GEN-DIV'OSC CIRCUIT BOARD,
500-579 " " TUNER-ILL CIRCUIT BOARD.
MID-WV " II " I-F CIRCUIT BOARD.

TDD-7W " "

BOD-BIB " " " KEYBOARD CIRCUIT BOARD.
HOD-WV " " " READOUT CIRCUIT BOARD.

TROL IUG NUMBERS CORRESPDND TO THOSE SHOWN ON THE
SCHEMATIC AND X'RAY VIEWS.

#1815 LAMPS ARE USED FOR PIS}. PLEA. PL55.
31} LAMPS ARE USED FOR PLSI, PLSZ. PISA.

SCHEMATIC OF THE

HEATHK|T®

DIGITAL FM STEREO TUNER

MODEL AJ-1510

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