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Model
CX-JN77 JAX-N77 JAX-PK77
Pages
80
Size
6.28 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cx-jn77-jax-n77-jax-pk77.pdf
Date

Sony CX-JN77 / JAX-N77 / JAX-PK77 Service Manual ▷ View online

17
CX-JN77
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 the
I
/
1
button to turn the power ON.
2. Press three buttons of
x
[P FILE]
 and 
[DISC 1]
 simulta-
neously.
3. The message “COLD RESET” is displayed on the fluorescent
indicator tube momentarily, then becomes standby states.
TUNER  STEP  CHANGE-OVER
(Except AEP, UK, CIS)
• A step of AM channels can be changed over between 9 kHz and
10 kHz.
Procedure:
1. Press the
I/1
button to turn the power ON.
2. Press the 
[TUNER/BAND]
 button to select “AM”.
3. Press the
I/1
button to turn the power OFF.
4. Press two buttons of 
[PLAY MODE/TUNING MODE]
 and
 
I/1
simultaneously.
5. The message “AM 9K STEP” or “AM 10K STEP” is displayed
on the fluorescent indicator tube, and thus the channel step is
changed over.
CD  SHIP (LOCK)  MODE
• 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.
Procedure:
1. Press the
I/1
button to turn the power ON.
2. Press the 
[CD]
 button to select “CD”.
3. Press two buttons of 
[CD]
 and 
[POWER]
 simultaneously.
4. The message “LOCK” is displayed on the fluorescent indica-
tor tube, and the CD ship mode is set.
CD  SHIP (LOCK)  MODE  &  COLD  RESET
• This mode is used to perform CD chip (lock) mode and cold
reset simultaneously.
Procedure:
1. Press the
I
/
1
button to turn the power ON.
2. Press the 
[CD]
 button to select “CD”.
3. Press three buttons of
x
[CD]
  and 
[DISPLAY]
  simulta-
neously.
4. The message “COLD RESET” is displayed on the fluorescent
indicator tube momentarily, then becomes standby states.
CHANGE-OVER  FUNCTION  OF  MD/VIDEO
• This mode is used to enable function of external input to change
over between MD and VIDEO.
Procedure:
1.
Press the
I/1
button to turn the power ON.
2.
Press two buttons of
VIDEO (MD)
and
I
/
1
simultaneously.
3.
The message “MD” or “VIDEO”is displayed on the fluores-
cent indicator tube, and the function of external input is
changed over.
CD  TRAY  LOCK  MODE
• This mode is used to unable to take sample disc out of tray in
the shop.
Procedure:
1. Press the
I/1
button to turn the power ON.
2. Press the 
[CD]
 button to select “CD”.
3. Set disc on the CD tray, press two buttons of
x
and
Z
for 5
seconds.
4. The message “LOCKED” is displayed on the fluorescent in-
dicator tube and the CD tray is locked. (Even if pressing
the
Z
button, the message “LOCKED” is displayed on the
fluorescent indicator tube and the CD tray is locked)
5. To release from this mode, press two buttons of
x
and
Z
for
5 seconds.
6. The message “UNLOCKED” is displayed on the fluorescent
indicator tube and the CD tray is unlocked.
AMP  TEST  MODE
• This mode is used to display the parameter of amplifier IC and
display the VACS status.
Procedure:
1. Press the
I/1
button to turn the power ON.
2. Press three buttons of
x
[P FILE]
 and 
[PLAY MODE/
TUNING MODE]
 simultaneously.
3. When the AMP test mode is activated, the message “AMP
TEST IN” is displayed on the fluorescent indicator tube
momentarily, then amplifier adjustment mode is displayed on
the fluorescent indicator tube.
4. Press the 
[DISPLAY]
 button to changed over between VACS
status display mode and the amplifier IC parameter display
mode.
5. In the amplifier IC parameter display mode, press the 
[i-BASS]
button to changed over DBFB ON/OFF, and when it is ON,
the character “D” is displayed on the fluorescent indicator tube.
6. In the amplifier IC parameter display mode, press the
[SURROUND]
 button to changed over surround ON/OFF, and
when it is ON, the character “S” is displayed on the fluorescent
indicator tube.
7. In the amplifier IC parameter display mode, turn each knob of
[BASS]
[MIDDLE]
 and 
[TREBLE]
 causes respective param-
eters to be changed, as well as change-over of the display on
the fluorescent indicator tube.
18
CX-JN77
AGING  MODE
• This mode can be used for operation check of CD section and
tape deck section.
CD section and tape deck section work in parallel.
If an error occurred:
The aging operation stops only an error occurred sections and
display then status.
If no error occurs:
The aging operation continues repeatedly.
Procedure:
1. Press the
I/1
button to turn the power ON.
2. Press the 
[CD]
 button to select “CD”.
3. Set disc on the CD tray and set tape into the deck.
4. Press three buttons of
x
[P FILE]
 and 
[DISC SKIP/EX-
CHANGE]
 simultaneously.
5. Aging operations of CD and tape are started at the same time.
6. To release from this mode, press the
I/1
button to turn the
power OFF and press the function buttons.
1. Display at the Aging Mode
Display operating state of CD section and tape deck section alter-
nately.
If an error occurred, stop display which that section.
2. CD Section
The sequence during the aging mode is following as below.
Display at the aging mode is the same as the normal operation.
Aging mode sequence (CD section) :
Start (from disc 1)
Disc chucking
TOC read
Play first track for 2 seconds
Play last track for 2 seconds
EX-change open/close
Open the disc tray
Disc skip
Close the tray
Change the next disc.
3. Tape Deck Section
The sequence during the aging mode is following as below.
If an error occurred, stop display that step.
Aging mode sequence (tape deck section) :
Rewind the tape A and B
“TAPE AAG-1 or TAPE BAG-2”
Shut off
FWD play the tape A
“TAPE AAG-3”
2 minutes
Rewind the tape A
“TAPE AAG-6”
Shut off
FWD play the tape B
“TAPE BAG-3”
2 minutes
Rewind the tape B
“TAPE BAG-6”
Shut off
Note:
 “TAPE 
*
AG-
*
” is display of each step.
PANEL  TEST  MODE
• This mode is used to check the fluorescent indicator tube, LEDs
and buttons.
Procedure:
1. Press the
I/1
button to turn the power ON.
2. Press three buttons of
x
[P FILE]
  and 
[ENTER]
  simulta-
neously.
3. Fluorescent indicator tube and LEDs are all turned ON.
4. Press two buttons of
X
and 
[ENTER]
 simultaneously, mode
is changed over.
5. In the key check mode, press each key, the defined key num-
ber of every each key list is displayed on the fluorescent
indicator tube.
6. In the key count check mode, “KEYCNT 
0” is displayed on
the fluorescent indicator tube. Each time a key is pressed, “K”
value increases. However, once a key is pressed, it is no longer
taken into account.
7. In the headphone input check mode, connect the headphone,
the message “H_P ON” is displayed on the fluorescent indica-
tor tube, and disconnect the headphone, the message “H_P
OFF” is displayed on the fluorescent indicator tube.
8. In the volume check mode, “VOLUME FLAT” is displayed
on the fluorescent indicator tube. Turn the 
[VOLUME]
 knob
clockwise, the message “VOLUME UP” is displayed on the
fluorescent indicator tube momentarily and turn the 
[VOLUME]
knob counterclockwise, the message “VOLUME DOWN” is
displayed on the fluorescent indicator tube  momentarily.
19
CX-JN77
MC  TEST  MODE
• This mode is used to check operations of microprocessor.
Procedure:
1. Press the
I
/
1
button to turn the power ON.
2. Press three buttons of
x
[P FILE]
 and 
[DISC 3]
 simulta-
neously.
3. When the MC test mode is activated, VACS level is displayed
on the fluorescent indicator tube momentarily.
4. Turn the 
[AMS/TUNING]
 knob clockwise, the message “ALL
EQ MAX” is displayed on the fluorescent indicator tube mo-
mentarily and turn the 
[AMS/TUNING]
  knob counterclock-
wise, the message “ALL EQ MIN” is displayed on the fluo-
rescent indicator tube momentarily.
5. Press the 
[PRESET EQ]
 button, the message “ALL EQ FLAT”
is displayed on the fluorescent indicator tube momentarily.
6. Turn the 
[VOLUME]
 knob clockwise, the message “VOLUME
MAX” is displayed on the fluorescent indicator tube momen-
tarily and turn the 
[VOLUME]
 knob counterclockwise, the mes-
sage “VOLUME MIN” is displayed on the fluorescent indica-
tor tube momentarily.
7. Press the 
[i-BASS]
 button to changed over VACS ON/OFF.
8. When the 
[REC PAUSE/START]
 button is pressed twice with
a tape set in the deck-B, the function is switched “MD” or
“VIDEO” and recording starts. When the
m
or
M
button
is pressed during recording, the tape is rewound back to the
beginning of recording, the function is switched to “TAPE B”,
then playback starts.
9. When the 
[CD SYNC]
 key is pressed with the test tape (AMS-
100, AMS-110A) in the deck, number of space between tunes
is counted, then if AMS-110A is set, “OK” is displayed on the
fluorescent indicator tube and if AMS-100 is set, “NG” is dis-
played on the fluorescent indicator tube.
10. Press the
I
/
1
button to release from this mode, then cold re-
set is performed.
VERSION  DISPLAY  MODE
• This mode is used to check the model, destination and software
version.
Procedure:
1. Press the
I
/
1
button to turn the power ON.
2. Press three buttons of
x
[P FILE]
 and 
[DISC 2]
 simulta-
neously.
3. When this mode is activated, model and destination is displayed
on the fluorescent indicator tube.
4. Press the 
[DISPLAY]
  button to changed over between soft-
ware version and year, month, day of the software creation
display mode and model and destination display mode.
5. To release from this mode, press three buttons of
x
[P FILE]
and 
[DISC 2]
 simultaneously.
CD  ERROR  CODE  DISPLAY  MODE
• This mode can be used for error code display of CD section.
Procedure:
1. Press the
I
/
1
button to turn the power ON.
2. Press the 
[CD]
 key to select “CD”.
3. Press three buttons of
x
[CD]
 and 
[DISC 1]
 simultaneously.
4. When this mode is activated, mechanism deck error code is
displayed on the fluorescent indicator tube.
5. Press the 
[i-BASS]
  button to changed over between optical
pick-up error code display mode and mechanism deck error
code mode.
6. Turn the 
[AMS/TUNING]
 knob to change over display of  er-
ror history.
1. Mechanism Deck Error Code Mode
• When this mode is entered, mechanism deck error code is dis-
played with the 10-character format on the fluorescent indica-
tor tube.
The first digit from the left indicates:
The first digit from the left indicates which mode the error history
is. In the mechanism deck error code mode, “M” is displayed on
the fluorescent indicator tube.
The second digit from the left indicates:
(Error history No. display)
The second digit from the left indicates which order the error history
is. “1” indicates the latest error history, and each time the number
increases by one, the error history goes back to one-previous error.
The third and 4th digit from the left indicates:
(Error status display)
The third and 4th digit from the left indicates which error status is
indicated.
Display
Status
0 0
No error
0 8
Table operation time-out (Table does not move to
the target position within the specified time)
1 6
In the chucking down operation, the operation was
retried by the maximum number of times but the
operation could not be completed
1 7
In the chucking up and down operation, the reverse
recovery processing was attempted but it could not
be recovered
1 8
In the chucking up operation, the operation was
retried by the maximum number of times but the
operation could not be completed
2 0
Loading operation time-out (Table does not move
to the target position within the specified time)
2 2
As the chuck was in the ex-open status at the
initialization, the closing was attempted but could
not be completed
The 5th and 6th digit from the left indicates:
(Present status display)
The 5th and 6th digit from the left indicates which operating status
when an error occurred is indicated.
Display
Status
0 1
Open completion status
0 2
From open status, the movement to chucking down
position is under way
0 3
From chucking down position, the open operation
is under way
0 4
Chucking down completion status
1 0
The chucking down operation is under way
1 1
The chucking up operation is under way
1 2
Close completion status
1 3
From close status, the ex-open operation is under
way
1 4
From ex-open status, the close operation is under
way
1 8
Ex-pen completion status
20
CX-JN77
The 5th and 6th digit from the left indicates:
(Error step display)
The 5th and 6th digit from the left indicates which processing when
a trouble occurred
Display
Contents
0 1
Power OFF in progress
0 2
Initialize in progress
0 3
Oscillation stopping
0 4
From oscillation stop, oscillation starting
0 5
Stopping
0 6
Stop operation is under way
0 7
Start operation in progress
0 8
TOC read in progress
0 9
Search operation is under way
0 A
Playback operation is under way
0 B
Pause operation is under way
0 C
Playback manual search operation is under way
0 D
Pause manual search operation is under way
0 E
The 7th and 8th digit from the left indicates:
The 7th and 8th digit from the left indicates which operation in
progress when a trouble occurred. (Step of each processing of the
5th and 6th digits is indicated)
5  REPEAT  LIMIT  CANCEL  MODE
• Number of repeat for CD playback is 5 times when the repeat
mode is “REPEAT”. This mode is used to enables CD to repeat
playback for limitless times.
Procedure:
1. Press the
I
/
1
button to turn the power ON.
2. Press the 
[CD]
 button to select “CD”.
3. Press three buttons of
x
[CD]
 and 
[ENTER]
 simultaneously.
4. The message “LIMIT OFF” is displayed on the fluorescent
indicator tube momentarily, CD repeat 5 limit is cancelled.
The 7th and 8th digit from the left indicates:
(Motor status display)
The 7th and 8th digit from the left indicates which motor output
status when an error occurred is indicated.
Display
Status
× 0
No table motor output
× 1
Table motor forward output
× 2
Table motor backward output
× 3
Table motor break output
0
×
No loading motor output
1
×
Loading motor forward output
2
×
Loading motor backward output
3
×
Loading motor break output
The 9th and 10 th digit from the left indicates:
(Tray status display)
The 9th and 10th digit from the left indicates which target
processing when an error occurred is indicated.
Display
Status
0 1
Open operation
1 2
Close operation
1 8
Ex-open operation
2. Optical Pick-up Error Code Mode
• When this mode is entered, optical pick-up error code is dis-
played with the 8-character format on the fluorescent indicator
tube.
The first digit from the left indicates:
The first digit from the left indicates which mode the error history
is. In the optical pick-up error code mode, “D” is displayed on the
fluorescent indicator tube.
The second digit from the left indicates:
(Error history No. display)
The second digit from the left indicates which order the error history
is. “1” indicates the latest error history, and each time the number
increases by one, the error history goes back to one-previous error.
The third and 4th digit from the left indicates:
(Error status display)
The third and 4th digit from the left indicates which error status is
indicated.
Display
Status
0 1
Not focused (TOC read without a disc)
0 2
GFS NG (TOC read with a disc chucked)
0 3
Start operation time-over
0 4
Defocused continuously (Defocused during TOC
reading)
0 5
Q code not entered for specified time
0 6
Tracking not turned ON
0 7
Blank disc (Blank disc TOC read)
Page of 80
Display

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