Test Mode - Sony HCD-GN90D Service Manual

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HCD-GN90D/GN100D
[GC TEST MODE]
• This mode is used to check the fluorescent indicator tube, LED,
model, destination, software version, volume, key, jog, encoder
and VACS level.
Procedure:
[ENTER]
1. Press
button,
x
simultaneously.
2. All LEDs and segments in fluorescent indicator tube are lighted up.
3. When you want to enter the software version display mode,
[DISC1]
press
button. The model and destination are displayed.
[DISC1]
4. Each time
button is pressed, the display changes from
MC version, GC version, CD version, ST version, TC version,
TA version, TM version in this order, and returns to the MC
version display.
[DISC3]
5. When
button is pressed while the version numbers are
being displayed except model and destination, the date of the
software creation appear. When
the display returns to the software version display. When
[DISC1]
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.
[DISC2]
6. Press
button, the key check mode is activated.
7. In the key check mode, the fluorescent indicator tube displays
"K0 J0 V0 E0".
Each time a button is pressed, "K" value increases. However,
once a button has been pressed, it is no longer taken into account.
"J" value increases in the manner of 0,1, 2, 3 ... if
knob is turned clockwise, or it decreases in the manner of 0, 9,
[MULTI JOG]
8,7 ... if
knob is turned counter-clockwise.
"V" value increases in the manner of 0, 1, 2, 3 ... if
knob is turned clockwise, or it decreases in the manner of 0, 9,
[VOLUME]
8,7 ... if
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
knob is turned counter-clockwise.
.>
[DISC3]
8. When
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
trigger by signal level, B is VACS level which is trigger by
temperature and CC is VACS level which is trigger by APVACS
(Abuse Protection VACS).
[EX-CHANGE/DISC SKIP]
9. When
LEDs and segments in fluorescent indicator tube light up,
alternate segments in fluorescent indicator tube would light up.
[EX-CHANGE/DISC SKIP]
If you press
half of alternate segments in fluorescent indicator tube would
[EX-CHANGE/DISC SKIP]
light up. Pressing
would cause all segments lights up.
10. To release from this mode, press three buttons in the same
manner as step 1, or disconnect the power cord.
[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
[ENTER]
1. Press
button,
x
simultaneously.
2. The DVD ring indicators and TAPE A and B indicators flash on
the fluorescent indicator tube. The function is changed to
VIDEO.
18
SECTION 4

TEST MODE

[DISC2]
button and
button
[DISC3]
button is pressed again,
[MULTI JOG]
[VOLUME]
.>
button is pressed after all
button again, another
button again
[DISC3]
button and
button
* Check of Amplifier
1. Press [EQ EDIT] button repeatedly until a message "GEQ MAX"
appears on the fluorescent indicator tube. GEQ increases to its
maximum.
2. Press [EQ EDIT] button repeatedly until a message "GEQ MIN"
appears on the fluorescent indicator tube. GEQ increases to its
minimum.
3. Press [EQ EDIT] button repeatedly until a message "GEQ FLAT"
appears on the fluorescent indicator tube. GEQ set to flat.
4. When the [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 [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
tube.
* 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
Logic Control) is turned on.
2. During recording, turn
m M
stop the recording and the function is changed to TAPE B and
rewind the tape in Deck B until the recording start position and
playback of the tape 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 is rewind, the
tape will be rewind until the position where the pause is applied.
* AMS Test Mode
1. Select the function "TAPE A" or "TAPE B".
2. Select Loop or Relay direction mode by pressing the
[DIRECTION] button. Insert a test tape AMS-110A or AMS-120
to selected tape deck.
3. Press the [AMP MENU] button to enter the AMS test mode.
4. After the test tape is rewind to the beginning of the tape, the
AMS+ is checked, and the mechanism is shut off after detecting
the AMS signal twice.
5. Then the AMS- is checked and the mechanism is shut off after
detecting the AMS signal twice.
6. When the check is complete, a message of either OK or NG
appears on the fluorescent indicator tube.
* To release from MC Test mode
1. To release from 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.
Procedure:
button, [ENTER] button, and
1. Press
x
simultaneously.
2. The fluorescent indicator tube becomes blank for a while, and
the set is reset.
knob counterclockwise will
button.
?/1
button
?/1

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