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Model
HCD-VX99 MHC-VX99
Pages
82
Size
8.47 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-vx99-mhc-vx99.pdf
Date

Sony HCD-VX99 / MHC-VX99 Service Manual ▷ View online

12
SECTION 4
TEST MODE
[MC 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  ,  ENTER , and ?/1 simulta-neously.
2. The fluorescent indicator tube displays “COLD RESET” and
the set is reset.
[CD Ship Mode]
• This mode moves the pickup to the position durable to vibra-
tion. Use this mode when returning the set to the customer after
repair.
Procedure:
1. Press ?/1 button to turn the set ON.
2. Press  CD  button and ?/1 button simultaneously.
3. After the "STANDBY" display blinks six times, a message
“LOCK” is displayed on the fluorescent indicator tube, and the
CD ship mode is set.
[MC Hot Reset]
• This mode resets the set with the preset data kept stored in the
memory.  The hot reset mode functions same as if the power
cord is plugged in and out.
Procedure:
1. Press three buttons x ,  ENTER , and  DISC 1  simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously,
and the set is reset.
[CD Service Mode]
• This mode can run the CD sled motor freely. Use this mode, for
instance, when cleaning the pickup.
Procedure:
1. Press ?/1 button to turn the set ON.
2. Select the function “CD”.
3. Press three buttons x ,  ENTER , and  OPEN/CLOSE  simul-
taneously.
4. The CD service mode is selected.
5. With the CD in stop status, turn the shuttle knob clockwise to
move the pickup to outside track, or turn the shuttle knob
counter-clockwise to inside track.
6. To exit from this mode, perform as follows:
1) Move the pickup to the most inside track.
2) Press three buttons in the same manner as step 2.
Note: • Always move the pickup to most inside track when exiting from
this mode.  Otherwise, a disc will not be unloaded.
• Do not run the sled motor excessively, otherwise the gear can be
chipped.
[VACS ON/OFF Mode]
• This mode is used to switch ON and OFF the VACS (Variable
Attenuation Control System).
Procedure:
Press the  ENTER  and  SPECTRUM  buttons simultaneously.  The
message “VACS OFF” or “VACS ON” appears.
[Change-over of MW Tuner Step between 9 kHz and
10 kHz]
• A step of MW 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 “MW”.
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 “MW 9 k STEP” or
“MW 10 k STEP”, 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 ,  ENTER  , 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 starting
from MC version, GC version, VC version, CD version, CM
version, ST version, TC version, TA version, TM version and
BR 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
“KEY
0 VOL0”.  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.
13
[MC Test  Mode]
• This mode is used to check operations of the respective sections
of Amplifier, Tuner, CD and Tape.
Procedure:
1.
Press the  ?/1  button to turn on the set.
2.
Press the three buttons of x , ENTER and DISC 3
simultaneously.
3.
A message “TEST MODE” appears on the FL display tube.
4
 When  f (CURSOR UP)  button is pressed, GEQ increases to
its maximum and a message “GEQ ALL MA” appears.
5.
When  F (CURSOR DOWN)  button is pressed, GEQ decreases
to its minimum and a message “GEQ ALL M1” appears.
6.
When  g (CURSOR LEFT)  or  G (CURSOR RIGHT)  button
is pressed, GEQ is set to flat and a message “GEQ FLAT”
appears.
7.
When the VOLUME control knob is turned clockwise even
slightly, the sound volume increases to its maximum and a
message “VOLUME MAX” appears for two seconds, then the
display returns to the original display.
8.
When the VOLUME control knob is turned 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.
9.
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, by operating the Shuttle
knob.  (It means that the memory is cleared.)
10. When CD is selected and the  EDIT  button is pressed, the disc
that is being chucked at this moment becomes the default
setting.  It means that the default disc only is accessed when
any other discs are selected even though the display indication
changes accordingly.  At the same time, the  DISC SKIP EX-
CHANGE  and  OPEN/CLOSE  cannot be accepted.  (It means
that the tray motor and the turntable motor are disabled of their
operation.)
11. When a tape is inserted in Deck B and recording is started, the
input source function selects VIDEO automatically.
12. When x button is pressed to stop recording, the Tape (Deck)
B is selected and tape is rewound using the Shuttle knob, tape
is rewound, tape is stops at around the record-starting position
and playback of the recorded portion of the tape is started.  If
PAUSE is inserted even once during recording, tape is rewound
to the position around the PAUSE position and is played back.
13. When the  CD SYNC HI-DUB  Button is press during playback
of Deck B, either normal speed or high speed can be selected
by this button.
14. Select the desired loop by pressing the  PLAY MODE  button.
Insert a test tape AMS-110A or AMS-RO to Deck A.
15. Press the  SPECTRUM  button to enter the AMS test mode.
16. After a tape is rewound first, the FF AMS is checked, and the
mechanism is shut off after detecting the AMS signal twice.
17. Then the REW AMS is checked and the mechanism is shut off
after detecting the AMS signal twice.
18. When the check is complete, a message of either OK or NG
appears.
19. When you want to exit this mode, press the  ?/1  button twice.
The cold reset is enforced at the same time.
14
[Aging Mode]
This mode can be used for operation check of CD section and tape deck section.
• If an error occurred:
The aging operation stops and display status.
• If no error occurs:
The aging operation continues repeatedly.
1.
Operating method of Aging Mode
Turn on the main power and select “CD” of the function.
1) Set a disc in DISC1 tray.  Select ALL DISC CONTINUE, and REPEAT OFF.
2) Load the tapes recording use into the decks A and B respectively.
3) Press three buttons x ,  ENTER ,  and
DISC SKIP/EX-CHANGE  simultaneously.
4) Aging operations of CD and tape are started at the same time.
5) To exit the aging mode, perform [MC Cold Reset].
3. Aging Mode in CD section
1) Display state
• No error occurs
Note:
[*][*][*][*] :  Number of aging operations
Error display
E
** s ## $$ %%
1 2 3 4 5
• When the buttons x ,  ENTER  and  DISC 1  are pressed simultaneously, number of time of the mechanism error and the NO DISC error
can be checked.
Display:
EMC**EDC**
**:
Number of times of error (Maximum three times)
EMC: Mechanism error
EDC: NO DISC error
• When aging operation is complete, be sure to perform the MC Cold Reset to reset the error history.
D: No disc error
01: FOCUS ERROR
02: GFS ERROR
03: SETUP ERROR
01: NO DISC judgment without chucking retry
02: NO DISC judgment after chucking retry
Status at the time of NO DISC judgment
(High order digits only)
1:
STOP
2:
SETUP
3:
TOC READ
4:
ACCESS
5:
PLAY BACK
6:
PAUSE
7:
MANUAL SEARCH (PLAY)
8:
MANUAL SEARCH (PAUSE)
AGING[*][*][*][*]
1
 
**
2
 s
3
 
##
4
 
$$
5
 
%%
M: Mechanism error
Don’t care
High order digits only
D: Stopped during closing due to problems other than mechanism.
E: Stopped during opening due to problems other than mechanism.
C: Stopped during chucking due to problems other than mechanism.
F: Stopped during EX-opening due to problems other than mechanism.
Emergency related errors (High order digits only)
1:
Stopped during chuck-up
2:
Stopped during chuck-down
3:
Time out by EX-OPEN
5:
Time out by EX-CLOSE
The error No. 00 indicates the newest error.  As the error No. increases, it means the older error.
When you want to retrieve the error history, press the  PLAY MODE  button in the case of mechanism error.
Or press the  REPEAT  button in the case of NO DISC error.
Display
15
2)  Operation during aging mode
In the aging mode, the program is executed in the following
sequence.
(1)
The disc tray opens and closes.
(2)
The mechanism accesses DISC 2 and makes an attempt to
read TOC.  However, since there are no discs, a message
“CD2 NO DISC” appears.
(3)
The mechanism accesses DISC 3 and a message “CD3 NO
DISC” appears.
(4)
The disc tray turns to select a disc1.
(5)
A disc is chucked.
(6)
TOC of disc is read.
(7)
The pickup accesses to the track 1, and  playing 2 seconds.
(8)
The pickup accesses to the last track, and playing 2 seconds.
(9)
Every time when an aging operation of step 1 to step 8 is
complete, the display “AGING[*][*][*][*]” value increases
as the number of aging operations is counted up.
(10) Returns to step 1.
3. Aging Mode in Tape Deck section
1) Display state
• No error occurs
Display action now
• Error occurred
Display action last time
2)  Operation during aging mode
In the aging mode, the program is executed in the following
sequence.
(1) Rewind is executed up to the top of tape A and B.
(2) A tape on FWD side is played for 2 minutes.
(3) FF is executed up to either made for 20 second or the end of
tape.
(4) A tape is reversed, and the tape on REV side is played for 2
minutes.
(5) Rewind is executed up to the top of tape.
(6) Returns to step 2, and repeat steps from 2 to 5.
[Function Change Mode]
* elect either VIDEO or MD of the external FUNCTION input.
Procedure:
1.
Turn on the power.
2.
Press the two buttons  ENTER  and  ?/1  at the same time.
The main power is turned on and the other function of the
previous function is selected and displayed.  “MD” or
“VIDEO”.
NO. Display action
Action contents
Final timing
1
TAPE A AG-1
Rewind the TAPE A, B
The top of tape
2
TAPE A AG-2
FWD play the TAPE A
2 minutes playing
3
TAPE A AG-3
F.F. the TAPE A
20 second FF or the end
of tape
4
TAPE A AG-4
REV play the TAPE A
2 minutes playing
5
TAPE A AG-5
Rewind the TAPE A
The top of tape
6
TAPE B AG-2
FWD play the TAPE B
2 minutes playing
7
TAPE B AG-3
F.F. the TAPE B
20 second FF or the end
of tape
8
TAPE B AG-4
REV play the TAPE B
2 minutes playing
9
TAPE B AG-5
Rewind the TAPE B
The top of tape
Page of 82
Display

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