Test Mode - Sony HCD-GTR333 Service Manual

[PANEL TEST MODE]
• This mode is used to check the fl uorescent indicator tube,
LEDs, keys, [MASTER VOLUME] jog, model, destination
and software version.
Procedure:
1. Press [TV] button and [OPTION] button simultaneously
and hold 3 seconds.
2. All LEDs and segments in fl uorescent indicator tube are
lighted up.
3. When you want to enter to the software version display
mode, press [PRESET EQ] button. The model information
appears on the fl uorescent indicator tube.
• "GFX 2" is shown for MHC-GTR333.
• "GFX 3S" is shown for MHC-GTR555.
• "GFX 4S" is shown for MHC-GTR777.
• "GFX 7S" is shown for MHC-GTR888.
Press [PRESET EQ] button again to view the destination
information.
4. During the destination information display, press [PRESET
EQ] button. Each time [PRESET EQ] button is pressed,
the fl uorescent indicator tube shows the version of each
category software in the following sequence: SC, MTK
(DMB Board fi rmware version), UI, PF, SYS, CD, CDMA,
CDMB, ST, TA TAS, TM and return back to model
information display.
5. When [SEARCH] button is pressed while the version
numbers are being displayed except model and destination,
the date of the software creation appears. When [SEARCH]
button is pressed again, the display returns to the software
version display. When [PRESET EQ] button is pressed
while the date of the software creation is being displayed,
the date of the software creation is displayed in the same
order of software version display.
6. Press [GROOVE] button, the key check mode is activated.
7. In the key check mode, the fl uorescent indicator tube displays
"K 0 V0".
Each time a button is pressed, "K" value increases. However,
once a button has been pressed, it is no longer taken into
account.
"V" value increases in the manner of 0, 1, 2, 3 ... if
[MASTER VOLUME] knob is turned clockwise, or it
decreases in the manner of 0, 9, 8, 7 ... if [MASTER
VOLUME] knob is turned counterclockwise.
8. When [DJ EFFECT] button is pressed after all LEDs and
segments in fl uorescent indicator tube light up, alternate
segments in fl uorescent indicator tube and LEDs would
light up. If you press [DJ EFFECT] button again, another
half of alternate segments in fl uorescent indicator tube and
LEDs would light up. Pressing [DJ EFFECT] button again
would cause all segments in fl uorescent indicator tube and
LEDs light up.
9. To release from this mode, press three buttons in the same
manner as step 1, or disconnect the power cord.
[COMMON TEST MODE]
• This mode is used to check operations of the Amplifi er
section.
Procedure:
• To enter Common Test Mode
1. Press [USB/USB SELECT] button and [GROOVE] button
simultaneously and hold for 3 seconds.
2. The bar segment fl ash on the fl uorescent indicator tube.
The function is changed to TV and the volume is changed
to VOLUME MIN.
• Check of Amplifi er
1. Press [PRESET EQ] button repeatedly until a message
"GEQ MAX" appears on the fl uorescent indicator tube.
GEQ increases to its maximum.
HCD-GTR333/GTR555/GTR777/GTR888
SECTION 3

TEST MODE

2. Press [PRESET EQ] button repeatedly until a message
"GEQ MIN" appears on the fl uorescent indicator tube.
GEQ decreases to its minimum.
3. Press [PRESET EQ] button repeatedly until a message
"GEQ FLAT" appears on the fl uorescent indicator tube.
GEQ is set to fl at.
4. When the [MASTER VOLUME] knob is turned clockwise
even slightly, the sound volume increases to its maximum
and a message "VOLUME MAX" appears on the fl uorescent
indicator tube.
5. When the [MASTER VOLUME] knob is turned counter-
clockwise even slightly, the sound volume decreases to its
minimum and a message "VOLUME MIN" appears on the
fl uorescent indicator tube.
• To release from Common Test Mode
1. To release from this mode, press [POWER] button.
2. The cold reset is enforced at the same time.
[COLD RESET]
• The cold reset clears all data including preset data stored
in the EEPROM to initial conditions. Execute this mode
when returning the set to the customer.
• Procedure:
1. Press [POWER] button to turn on the system.
2. Press [
for 3 seconds.
3. "COLD RESET" appears on the fl uorescent
indicator tube. After that, the fl uorescent indicator
tube becomes blank for a while, and the system is
reset.
[TUNER STEP CHANGE]
• The step interval of AM channels can be toggled between
9 kHz and 10 kHz. This mode is not available for Saudi
Arabian, European and Russian models.
• Procedure:
1. Press [POWER] button to turn on the system.
2. Press [FUNCTION] button repeatedly to select the
"AM".
3. Press [POWER] button to turn off the system.
4. Press [SEARCH] button and [POWER] button
simultaneously. The system turns on automatically.
The message "AM 9K STEP" or "AM 10K STEP"
appears on the fl uorescent indicator tube and thus
the channel step is changed.
[CD SHIP MODE (WITH MEMORY CLEAR)]
• This mode moves the optical pick-up to the position durable
to vibration and clears all data including preset data stored
in the EEPROM to initial conditions during the next
AC-In. Use this mode when returning the set to the customer
after repair.
• Procedure:
1. Press [POWER] button to turn on the system.
2. Select CD function.
3. Press [GROOVE] button and [POWER] button
simultaneously for 3 seconds. The system turns off
automatically.
4. Message "MECHA LOCK" is displayed on the
fl uorescent indicator tube and the CD ship mode
is set.
[CD SHIP MODE (WITHOUT MEMORY CLEAR)]
• This mode moves the optical pick-up to the position
durable to vibration. Use this mode when returning the set
to the customer after repair.
] button and [POWER] button simultaneously
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