HCD-VP700 - Sony Audio Service Manual (repair manual). Page 13

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13
HCD-VP700
SECTION 3
TEST MODE
[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 three buttons  x  ,  DISPLAY  , and  DISC 1
simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously,
and the set is reset.
[Tuner Step Change] (Except for European and Middle Eastern
models)
• A step of AM channels can be changed over between 9 kHz and
10 kHz.
Procedure:
1. Press  `/1  button to turn the set ON.
2. Select the function “TUNER”, and press  TUNER/BAND  button
to select the BAND “AM”.
3. Press   `/1  button to turn the set OFF.
4. Press  ENTER  and   `/1  buttons simultaneously, and the
display of fluorescent indicator tube changes to “AM 9 k ST”
or “AM 10 k ST”, and thus the channel step is changed over.
[GC Test  Mode]
• This mode is used to check the software version, FL tube, LED,
keyboard and VACS.
Procedure:
1. Press three buttons   x  ,  DISPLAY , and  DISC 2
simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
3. When you want to enter the software version display mode,
press  DISC 1 .The model number and destination are displayed.
4. Each time  DISC 1  is pressed, the display changes stating from
MC version, GC version, CD version, CDD, CDM version BD,
ST version, TA version, TM version, TC version, in this order,
and returns to the model number and destination display.
5. When  DISC 3  is pressed while the version numbers are being
displayed except model number and destination, year, month
and day of the software creation appear. When  DISC 3  is pressed
again, the display returns to the software version display. When
DISC 1  is pressed while year, month and day of the software
creation are being displayed, the year, month and day of creation
of the software versions are displayed in the same order of
version display.
6. Press  DISC 2  button, and the key check mode is activated.
7. In the key check mode, the fluorescent indicator tube displays
“KOJOVO”. Each time a button is pressed, “KEY” value
increases.
However, once a button is pressed, _it is no longer taken into
account.
“VOL” value increases like 1, 2, 3...if rotating VOLUME knob
in “+” direction, or it decreases like 0, 9, 8...if rotating in
“_”direction.
8. Also when  DISC 3  is pressed after lighting of all LEDs and FL
tubes, value of VACS appears.
9. To exit 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
1. Press the  `/1  button to turn on the set.
2. Press the three buttons of  x   ,  DISPLAY  and  DISC 3
simultaneously.
3. Cursor segment flash on the FL display tube. The input
FUNCTION is changed to GAME.
* Check of Amplifier
Initial settings: Input
, GAME
EQ
, FLAT
Mode
, MUSIC
VA CS
, OFF
Output channel switching:
MUSIC key: L
,  L
, R through
MOVIE key: L
, SL
, SR through
GAME key:L
, L, SL, C R , R, SR, SW through
TOOL MODE key: L 
,  C
, SW through
1. When the  VOLUME  control knob is turned clockwise even
slightly, the sound volume increases to is maximum and a
message “VOLUME MAX” appears for two seconds, then the
display returns to the original display.
2. When the  VOLUME  control knob is tuned counter-clockwise
even slightly, the sound volume decreases to its minimum and a
message “VOLUME MIN” appears for two seconds, then the
display returns to the original display.
* Tuner function
1. In the test mode, the default-preset channel is called even when
the TUNER is selected and an attempt is made to call the preset
channel that has been stored in memory. (It means that the
memory is cleared.)
2. The minimum, center and maximum frequency of each band is
set then.
* Tape recording test
1. To enter the MC Test Mode.
2. Load tapes in both tape decks A and B.
3. Press the REC button to start recording.
4. Pressing the  M  ,  m  buttons during recording returns the
tape to the recording start position and stops it at this position.
5. Pressing the “High Speed Dubbing” key while playing back the
tape of deck B switches the playback speed between “Normal
Speed” and “High Speed”.
Note:
When the playback direction of the tape is set to other than “ONY
WAY”, the restriction on the number of times playback which can
be repeated will be cleared.
* AMS Test Mode
1. Set TAPE function
2. Select the desired loop by pressing the  PLAY MODE  button.
Insert a test tape AMS-110A or AMS-120 to Deck A.
3. Press the  SPECTRUM  or  KARAOKE PON  button to enter
the AMS test mode.
4. After a tape is rewound first, the FF AMS is checked, and the
mechanism is shut off after detecting the AMS signal the AMS
signal twice.
5. Then the REW 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.
* To return to normal mode again.
1. When you want to exit this mode, press the  `/1  button.
2. The cold reset is enforced at the same time.
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