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Teac AG-680 Service Manual

Teac AG-680
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TEAC
SERVICE
MANUAL
AG-680
AM/FM
Stereo
Receiver
*
PC
boards
shown
are
viewed
from
parts
side.
¢
The
parts
with
no
reference
number
or
parts
number
in
the
exploded
views
are
not
supplied.
¢
As
regards
the
resistors
and
capacitors,
refer
to
the
circuit
diagrams
contained
in
this
manual.
*
A\
Parts
marked
with
this
sigh
are
critical
components.
They
must
be
replaced
with
identical
components
-
refer
to
the
appropriate
parts
list
and
ensure
exact
replacement.
e
Parts
of
[
]
mark
can
be
used
only
with
the
version
designated.
[J]:
JAPAN
[US]:U.S.A.
[C]:
CANADA
{E]:
EUROPE
[UK]:U.K.
[GE]:
GENERAL
EXPORT
NOTES
9A07472100

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Questions and Answers:

Teac AG-680 Specifications

General IconGeneral
BrandTeac
ModelAG-680
CategoryStereo Receiver
LanguageEnglish

Summary

Specifications

AMP Section

Details power output, distortion, S/N ratio, input sensitivity, and maximum input level for the amplifier section.

FM Section

Covers tuning range, usable sensitivity, image rejection, distortion, and S/N ratio for the FM receiver.

AM Section

Details tuning range, usable sensitivity, selectivity, image rejection, distortion, and S/N ratio for the AM receiver.

General

Provides technical specifications for power consumption, power requirements, physical dimensions, and net weight.

Standard Accessories

Lists included accessories such as the remote control unit and operator's manual.

Integrated Circuit Pin Functions

ANAM1267T IC Pin Assignments

Details the pin assignments, I/O direction, and descriptions for the ANAM1267T integrated circuit.

System Block Diagram

Tuner IC Block Diagram

Alignment Procedures

Adjustment Point Identification

Measurements and Calibration

FM/AM Tracking Voltage Adjustments

Describes voltage adjustments for FM and AM tracking using a DC voltmeter and specific test points.

AM RF Adjustment Procedures

Details AM RF adjustment steps using a signal generator, loop antenna, and oscilloscope for maximum sensitivity.

FM RF Adjustment Procedures

Outlines FM RF adjustment steps using a signal generator and dummy antenna for maximum sensitivity.

FM Mono Distortion Adjustment

Explains distortion adjustment for FM mono using a signal generator, choke coil, and distortion meter.

FM/AM Auto Stop Level Adjustment

Details FM/AM auto stop level adjustments using signal generators, tuning displays, and specific adjustment points.

Wiring Diagram

Main Block Diagram

Functional Block Diagram

Schematic Diagram

Printed Circuit Board Layouts

Exploded Parts View

Included Accessories List

Component Numbering Systems

Resistor Numbering System

Explains the numbering system for resistors, including type, wattage, shape, tolerance, and value codes.

Capacitor Numbering System

Details the numbering system for capacitors, covering type, voltage, value, tolerance, and peculiarity codes.

Printed Circuit Board Assemblies

Main PCB Assembly

References the part number and description for the main printed circuit board assembly.

Front PCB Assembly

References the part number and description for the front printed circuit board assembly.

Power PCB Assembly

References the part number and description for the power printed circuit board assembly.

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