Voltage Conversion; Test Mode - Akai TX-500 Service Manual

* INFORMATIONS
SYMBOLS FOR PRIMARY DESTINATION
Unit destinations are indicated with letters as shown below.
Symbols | Principal Destinations
U.S.A
Canada
Europe (except U.K.
Japan
Australia
German
UniversalArea
ustom version
o
Cc ~
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VOLTAGE CONVERSION
(U5,U8 and Y7 version models only)
Before connecting the power cord, set the VOLTAGE
SELECTOR, located on the rear panel of the unit, so that the
correct voltage for your area is indicated.
eo
AC IN
[ea]
VOLTAGE SELECTOR
00
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er SERVICE MANUAL
4
TEST MODE
Various kinds of test modes are installed in this unit's micro-
computer in order to test them on the production line.
Following test modes among the various test modes can be
used for adjustment, operation check or maintenance. To
terminate the test mode, simply press the "POWER ON/
STANDBY" button or disconnect the AC power cord from the
AC outlet.
1. DECK TEST MODE
This test mode can be used for tape speed adjustment as
well as bias oscillator frequency adjustment in the TAPE
DECK section.
While pressing and holding the "TAPE II" and "m" (stop)
buttons, connect the AC power cord to the AC inlet of this
unit. The function turns to "TAPE |" and "DUBX1" as well as
"| >", "ll B" tape direction indicators on the FLD light when
this mode is engaged.
Corresponding further information is shown on page 21.
2. DECK CLEANING MODE
This test mode can be used for cleaning the TAPE DECK
mechanism.
Because, this mode enables engaging of the playback, fast
forward (FF), and rewind (RWD) modes without a cassette
tape, it makes the cleaning (such as the capstan shaft,
magnetic head, pinch roller etc.,) easier.
(further more, the cassette lid remains open even if the
playback or FF, RWD made is engaged on the AC-600 series
models).
While pressing and holding the "TAPE |" and "wm" (stop)
buttons, connect the AC power cord to the AC inlet of this
unit. The "TAPE 1|","| >", "il" tape direction indicators on the
FLD light when this mode is engaged. (Further more, the
cassette lid will open automatically on the AC-600 series
models.)
3. CD TEST MODE
This mode can be used for the operation check (step by
step) or adjustment of the CD PLAYER section. Corresponding
further information is shown on page 22.
While pressing and holding the "CD 1" and "as" (stop)
buttons, connect the AC power cord to the AC inlet of this
unit. The "TEST" indicator on the FLD will light. Only the "1"
# OPEN/CLOSE button can be used for loading the DISC in
this mode, so the disc must be set on the "DISC 1" tray.