Test Mode By Operating The Keys Of The Main Unit - Kenwood A-58 Service Manual

A-58/68
CIRCUIT DESCRIPTION
2. Test mode by operating the keys of the main unit
2-1. Setting method
e With the PRESENCE OFF key pressed, connect the
AC power plug.
2-2. Resetting method
© Disconnect the AC power plug, and the TEST MODE
is reset and the system is initialized.
2-3. Contents
@ Auto power on
e If the AC power plug is connected with the PRES-
ENCE OFF key pressed, the power is turned on and
all the functions are initialized.
The operations used while the power is turned on
(MUTE, IC control, etc.) are executed as in the nor-
mal operation mode. (If the power is turned on with-
out turning on the MUTE, the protection may work
and inspection may not be executed.)
@ ALL LED ON mode
If the AC power plug is connected with the PRES-
ENCE OFF key pressed, all the FL and LED seg-
ments light up. Then, if any key of the main unit is
pressed, they are set under the normal indicating
condition.
® Confirmation of effectiveness of keys of the main
unit
e It can be confirmed that the keys of the main unit are
accepted.
@ Operations of the keys and switches which operate
differently in the TEST MODE from themselves in
the normal condition.
The keys and switches other than the following op-
erate normally.
BALANCE L:
3-stage setting used to set to R ~ CENTER > L.
BALANCE R:
3-stage setting used to set to L > CENTER > R.
DISPLAY KEY
Change of bar display mode of FL tube
The bar display mode of FL tube is changed cyclically
as shown below.
EQ display > Inverted SPE.ANA. display (Normal display mode)
Niagara display
CD REC KEY
3-stage setting of CENTER SPEAKER VOLUME
LEVEL
The center speaker volume level is changed cycli-
cally as shown below in the DOLBY SURROUND,
DOLBY 3-STEREO mode.
MINI > CENTER
MAX
Al KEY
3-stage setting of REAR SPEAKER VOLUME LEVEL
The rear speaker volume level is changed cyclically
as shown below in the DOLBY SURROUND, DOLBY
3-STEREO mode.
MINI > CENTER
MAX
CHARACTER KEY
3-stage setting of DELAY TIME
The delay time is changed cyclically as shown below
in the DOLBY SURROUND, DOLBY 3-STEREO
mode.
15msec — 20msec
30msec
POPS KEY
EQ LEVEL FLAT
The EQ level is set to 0 aB.
ROCK KEY
EQ LEVEL MAX
The EQ level is set to maximum.
JAZZ KEY
EQ LEVEL MINI
The EQ level is set to minimum.
CLASSIC KEY
TEST TONE ON/OFF
The test tone is turned on/off only in the DOLBY
SURROUND, DOLBY 3-STEREO mode.
MOVIE KEY
ALL FL DISPLAY SEGMENTS PUTTING OUT ON/
OFF
All putting out and normal putting out of the FL dis-
play segments are selected alternately.
© Output of MUTE signal
e¢ The MUTE signal operates normally.
© Relay control in DOLBY mode
e The relays are controlled in the DOLBY mods as in
the normal operation mode.
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