Test Mode; Tel 13942296513 - Sony HCD-GNX60 Service Manual

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[GC TEST MODE]
• This mode is used to check the fluorescent indicator tube,
LEDs, keys, MASTER VOLUME jog, OPERATION
DIAL jog, AMS jog, destination, software version and
VACS level.
Procedure:
1. Press x button, [ENTER] button and [DISC 2] button
simultaneously.
2. All LEDs and segments in fluorescent indicator tube are lighted
up. All LEDs are lighted up in red color. If the system is turned
on, the `/1 LED is lighted up in green color.
3. When you want to enter the software version display mode,
press [DISC 1] button. The model and destination are displayed.
4. Each time [DISC 1] button is pressed, the display changes from
MC version, GC version, SYS version, CD version, CDDM
version, CDMA version, CDMB version, BDA version, BDB
version, ST version, TC version, TA version and TM version
in this order, and returns to the MC version display.
5. When [DISC 3] button is pressed while the version numbers
are being displayed except model and destination, the date of
the software creation appear. When [DISC 3] button is pressed
again, the display returns to the software version display. When
[DISC 1] 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 [DISC 2] button, the key check mode is activated.
7. In the key check mode, the fluorescent indicator tube displays
"K 0 J0V0E0 X0".
Each time a button is pressed, "K" value increases. However,
once a button has been pressed, it is no longer taken into
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account.
"J" value increases in the manner of 0,1, 2, 3 ... if [OPERATION
DIAL] knob is turned clockwise, or it decreases in the manner
of 0, 9, 8, 7 ... if [OPERATION DIAL] knob is turned counter-
clockwise.
"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 counter-clockwise.
"E" value increases in the manner of 0,1, 2, 3 ... if
knob is turned clockwise, or it decreases in the manner of 0,
9, 8, 7 ... if
.
8. When [DISC 3] button is pressed after all LEDs and segments
in fluorescent indicator tube light up, the fluorescent indicator
tube displays "VACS A+B APCC". A is VACS level which is
triggerd by signal level, B is VACS level which is triggerd by
temperature and CC is VACS level which is triggerd by
APVACS (Abuse Protection VACS).
The signal level, which will trigger VACS A is shown in the
center area of fluorescent indicator tube.
9. When [EX-CHANGE/DISC SKIP] button is pressed after all
LEDs and segments in fluorescent indicator tube light up,
alternate segments in fluorescent indicator tube would light
up. If you press [EX-CHANGE/DISC SKIP] button again, another
half of alternate segments in fluorescent indicator tube would
light up. Pressing [EX-CHANGE/DISC SKIP] button again
would cause all segments lights up.
10. To release this mode, press three buttons in the same manner
as step 1, or disconnect the power cord.
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SECTION 4

TEST MODE

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[MC TEST MODE]
• This mode is used to check operations of the respective sections
of Amplifier, Tuner, and Tape.
Procedure:
* To enter MC Test Mode
1. Press x button, [ENTER] button and [DISC 3] button
simultaneously.
2. The CD ring indicators, TAPE A and TAPE B indicators flash
on the fluorescent indicator tube. The function is changed to
VIDEO.
* Check of Amplifier
1. Press [EQ BAND] button repeatedly until a message "GEQ
MAX" appears on the fluorescent indicator tube. GEQ
increases to its maximum.
2. Press [EQ BAND] button repeatedly until a message "GEQ
MIN" appears on the fluorescent indicator tube. GEQ decreases
to its minimum.
3. Press [EQ BAND] button repeatedly until a message "GEQ
FLAT" appears on the fluorescent indicator tube. GEQ set to
flat.
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 fluorescent
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 fluorescent
indicator tub.
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* Tape function
1. When a tape is inserted in Deck B and recording is started, the
function is changed to VIDEO automatically. When [CD SYNC]
button is pressed during recording in function, ALC (Automatic
Level Control) is turned on.
2. During recording, turn
rotation will change the function to TAPE B and rewind the
tape in deck B until the recording start position and playback
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of the tape in deck B is started. If the [REC PAUSE/ START]
button is pressed for a pause and pressed again to resume
recording during recording time, when the tape in deck B is
rewind, the tape in deck B will be rewind until the position
where the pause is applied.
* To release MC Test mode.
1. To release this mode, press
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 x button, [ENTER] button, and
simultaneously.
2. The fluorescent indicator tube becomes blank for a while, and
the set is reset.
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