Test Mode - Sony HCD-GTK1i Service Manual

UI TEST MODE
• This mode is used to check LCD display, keys, VOLUME
jog, model, destination, and software version.
Procedure:
1. Press [FUNCTION] button and [. m TUNING –]
button simultaneously and stay for 5 seconds.
2. All segments in the LCD are lighted up.
3. When press [. m TUNING –] button, the display
changes to model name. When press [. m TUNING –]
button again, the display will change to model destination.
When continue press [. m TUNING –] button again,
the display will show software version of the software
creation. The sequence is model name, model destination,
SC, SY, PF, UI, M1, M2, I1, I2, TA, and ST, in this order,
and returns to the model name display.
4. When you want to know the release date of the software
version, press [PRESET EQ] button during display
software version. Press [PRESET EQ] button again, the
same software version will display on the LCD.
5. When [M > TUNING +] button is pressed, half of
alternate segments in the LCD are lighted up.
If you press [M > TUNING +] button again, another
half of alternate segments in the LCD are lighted up.
Press [M > TUNING +] button again, all segments
will lights off and press [M > TUNING +] button
again, all segments will lights up.
6. Press [u] button, the key check mode is activated. In
the key check mode, the LCD displays "K 0 V0". Each
time a button is pressed, "K" value increases. Press other
keys on main unit to check whether the key is detected.
However, once a button has been pressed, it is no longer
taken into account. When all the keys on the main unit
have been pressed, the LCD display will show "OK" and
"K 8" alternately. For US and Canadian model, the LCD
display will show "OK" and K 7" alternately.
"V" value increases in the manner of 0, 1, 2, 3 ... if
[VOLUME] knob is turned clockwise, or it decreases in
the manner of 0, 9, 8, 7 ... if [VOLUME] knob is turned
counterclockwise.
• To release from UI Test mode
1. To release from this mode, Press [FUNCTION] button
and [M > TUNING +] button simultaneously and
stay for 5 seconds or disconnect the power cord.
MC TEST MODE
• This mode is used to check operations of the respective
sections of Amplifi er.
Procedure:
• To enter MC Test Mode
1. Press [M > TUNING +] button and [PRESET EQ]
button simultaneously and stay for 5 seconds.
2. The upper segments of LCD will blink. The function is
changed to AUDIO IN.
• Check of Amplifi er
1. Press [PRESET EQ] button repeatedly until a message
"GEQ MAX" appears on the LCD. GEQ increases to its
maximum.
2. Press [PRESET EQ] button repeatedly until a message
"GEQ MIN" appears on the LCD. GEQ decreases to its
minimum.
3. Press [PRESET EQ] button repeatedly until a message
"GEQ FLAT" appears on the LCD. GEQ is set to fl at.
SECTION 3

TEST MODE

4. When the [VOLUME] knob is turned clockwise even
slightly, the sound volume increases to its maximum and
a message "VOL MAX" appears on the LCD.
5. When the [VOLUME] knob is turned counterclockwise
even slightly, the sound volume decreases to its minimum
and a message "VOL MIN" appears on LCD.
• To release from MC Test mode
1. To release from this mode, press [u] button and
[GROOVE] button simultaneously and stay for 5 seconds.
2. The cold reset is enforced at the same time.
COLD RESET
• The cold reset clears all data including preset data stored
in the RAM to initial conditions. Execute this mode when
returning the set to the customer.
Procedure:
1. Press [u] button and [GROOVE] button simultaneously
and stay for 5 seconds.
2. The LCD becomes blank for a while, and the set is reset
when power off.
3. The LCD will show "RESET", and the set is reset when
power on.
VACS ON/OFF
• This mode is used to switch ON and OFF the VACS (Variable
Attenuation Control System).
Procedure:
1. During power on, press [FUNCTION] button and
[GROOVE] button simultaneously and stay for 5 seconds.
The message "VACS ON" or "VACS OFF" appears on
the LCD for 2 seconds.
TUNER STEP CHANGE
• The step interval of AM channels can be toggled between
9kHz and 10kHz.
Procedure:
1. During power on, press [TUNER/BAND] button on
the remote control or [FUNCTION] button until show
"TUNER AM" on the LCD.
2. Press [u] button and [PRESET EQ] button
simultaneously and stay for 5 seconds. The message "9K
STEP" or "10K STEP" appears on the LCD and thus the
channel step is changed.
VACS DISPLAY
• This mode is used to check the VACS level.
Procedure:
1. During Power on, Press [u] button and
[. m TUNING –] button simultaneously and stay
for 5 seconds.
2. The VACS Level Display as "VA APB". "V" represents
VACS, A represent VACS level which is triggered by
signal level, "AP" represents APVACS (Abuse Protection
VACS) and "B" represents APVACS level which is
triggered.
• To release from VACS DISPLAY
1. To release from this mode, press [u] button and
[. m TUNING –] button simultaneously and stay
for 5 seconds or disconnect the power cord.
HCD-GTK1i/GTK2i
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