Sony DHC-NXM4D / HCD-NXM4D Service Manual ▷ View online
17
HCD-NXM4D
SECTION 4
TEST MODE
[Change-over of AM Tuner Step between 9 kHz and 10 kHz]
• 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 x button continuously, then press
?/1
button. The
set will POWER on automatically, and the display of
fluorescent indicator tube changes to “AM 9 kHz step” or “AM
10 kHz step”, and thus the channel step is changed over.
fluorescent indicator tube changes to “AM 9 kHz step” or “AM
10 kHz step”, and thus the channel step is changed over.
[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.
returning the set to the customer.
Procedure:
1. Press x button continuously, then press [DIMMER]
and
?/1
buttons.
[Switching MD/VIDEO Functions]
Procedure:
1. Press the
?/1
button to turn the set ON.
2. Press the
?/1
button while holding the VIDEO/SAT button
depressed to toggle between “SAT” and “VIDEO.” The
selected mode is displayed.
selected mode is displayed.
[Aging Mode]
This mode can be used for operation check Tape deck section.
This mode can be used for operation check Tape deck section.
• If an error occurred:
The aging operation stops and is displayed status.
• If no error occurs:
The aging operation continues repeatedly
Aging mode in Tape Deck section
Procedure:
1. Load the tapes into the decks A and B respectively.
2. Press
?/1
button on the set ON
3. Select the function “TAPE A”
4. Press x button continuously, then press X and [TAPE A/B]
buttons. and aging mode is started.
5. To exit from the aging mode perform [Cold Reset].
• In the aging mode ,the program is executed in the following
sequence.
Step
Operation
Display
1
Rewind the TAPE A
TAPE A AG-1
2
Rewind the TAPE B
TAPE B AG-1
3
Play the TAPE A (t) (2 minute)
TAPE A AG-2
4
F•F. (AMS) the TAPE A
TAPE A AG-3
5
Play the TAPE A (T) (2 minute)
TAPE A AG-4
6
Rewind the TAPE A
TAPE A AG-5
7
Play the TAPE B (t) (2 minute)
TAPE B AG-2
8
F•F.(AMS) the TAPE B
TAPE B AG-3
9
Play the TAPE B (T) (2 minute)
TAPE B AG-4
10
Rewind the TAPE B
TAPE B AG-5
[GC Test Mode]
• All fluorecent segments and LEDs are tested.
• Microprocessor virsion.
• Keyboard and jog check.
• Display check.
• Microprocessor virsion.
• Keyboard and jog check.
• Display check.
Procedure:
1. To enter the test mode, press x button coutinuously, then
press X and [TUNER/BAND] buttons.
2. All segments and LEDs (without STANDBY LED) are turned
on.
3. Press the [TUNING -] button to increment the microprocessor
software version.
4. Press the [TUNING -] button to change the indication for the
microprocessor software version.
3. Press the b B button to set the check mode for the entries
(KEY, JOG, etc.).
4. Press the X button to display the current VACS level.
7. Press the x button to enter the mode to check the display. If
you press this button repeatedly, the display will change
sequentially as the button is pressed.
sequentially as the button is pressed.
8. Press x button coutinuously, then press X and [TUNER/BAND]
buttons.
[MC Test Mode] (Amplifier SECTION)
• This mode is used to test the function of the amplifier section.
Procedure:
1. Press
?/1
button to turn the set ON.
2. To enter the test mode, press x button coutinuously, then
press X and z START buttons.
3. Turn [VOLUME] knob to counter-clockwise, the function of
the equalizer is set to “MIN”.
4. Turn [VOLUME] knob to clockwise, the function of the
equalizer is set to “MAX”.
5. Whenever turn [SOUND MODE] knob to clockwise, the display
switches as follows.
“TONE MAX” t“TONE MIN” t“TONE FLAT”
6. Press [DSGX] button to select DBFB ON or OFF.
7. To exit from this mode, press
?/1
button to turn the set
OFF.
8. Press
?/1
button to turn the set ON.
9. To enter the test mode, press x button coutinuously, then
press X and z START buttons.
10. Select SOUND FIELD mode by turn the SOUND MODE
knob.
11. Change the speaker output by turn the SOUND SELECT knob.
[MC Test Mode] (Tape section)
• This mode is used to test the functions of the Tape Section.
Procedure:
1. Press
?/1
button to turn the set ON.
2. To enter the test mode, press x button coutinuously, then
press X and z START buttons.
3. While holding the [DIMMER] button depressed, turn the ALC
ON.
4. Press the z START button to start REC (recording).
5. While recording, press the [TUNING +] button to perform
5. While recording, press the [TUNING +] button to perform
automatic rewind and automatic playback (for FF version).
Also, press the [TUNING -] button to perform automatic rewind
and automatic playback (for FR version).
Also, press the [TUNING -] button to perform automatic rewind
and automatic playback (for FR version).
6. Select the function “TAPE A” or “TAPE B”
18
HCD-NXM4D
7. Press the [CD SYNC] button while “TAPE A” or “TAPE B”
is selected, to perform AMS check. “EDG[ ]” is displayed.
A number appears inside[ ].
A number appears inside[ ].
8. To exit from this mode, press ^/1 button to turn the set OFF.
[DVD Ship Mode (LOCK) ]
• This mode moves the pick-up to the position durable to
vibration. Use this mode when returning the set to the customer
after repair.
after repair.
Procedure:
1. Press ^/1 button to turn the set ON.
2. Select the function “DVD”.
2. Select the function “DVD”.
3. Press x button and [DVD] button simultaneously.
4. The “STANDBY” display blinks instantaneously, and the DVD
4. The “STANDBY” display blinks instantaneously, and the DVD
ship mode is set.
5. To fluorescent indicator tube displays ‘‘LOCK’’.
[DVD Ship (LOCK) & COLD RESET MODE]
Procedure:
1. Press ^/1 button to turn the set ON.
2. Select the function “DVD”.
2. Select the function “DVD”.
3
Press x button continuously, then press X and VIDEO/SAT
buttons.
buttons.
4. The “STANDBY” display blinks instantaneously and DVD
ship mode is set.
5. To fluorescent indicator tube displays “LOCK” and the set is
reset.
[DVD power -manage function]
• This mode let you switch on or off power supply to the BU
during TUNER function.
• When DVD POWER is set to OFF, the power supply to the
BU is cut off during TUNER function. It will increase the
time taken to access DVD when function change from TUNER
to DVD but it will improve tuner reception.
time taken to access DVD when function change from TUNER
to DVD but it will improve tuner reception.
• When DVD POWER is set to ON, the power supply to the
BU is not cut off during TUNER function. It will reduce the
time taken to access DVD when function change from TUNER
to DVD but it will decrease tuner reception performance.
time taken to access DVD when function change from TUNER
to DVD but it will decrease tuner reception performance.
Procedure:
1. Press ^/1 button to the set ON.
2. Select the function “DVD”.
2. Select the function “DVD”.
3. Press ^/1 button to turn the set OFF.
4. Press x button continuously, then press ^/1 button.The set
will POWER on automatically, and the display of fluorescent
indicator tube changes “DVD POWER OFF” or “DVD
POWER ON”.
indicator tube changes “DVD POWER OFF” or “DVD
POWER ON”.
5. Press ^/1 button to turn the set OFF.
[DISC Tray Lock]
Procedure:
1. Press ^/1 button to the set ON.
2. Select the function “DVD”.
2. Select the function “DVD”.
3. Press x button continuously, then press DVD Z button for
5 seconds.
And the displays of fluorescent indicator tube changes to
“LOCKED” or “UNIOCKED”.
And the displays of fluorescent indicator tube changes to
“LOCKED” or “UNIOCKED”.
4. Press ^/1 button to turn the set OFF.
[DVD Repeat 5 Times Limit Release Mode]
Procedure:
1. Press ^/1 button to turn the set ON.
2. Select the function “DVD”.
2. Select the function “DVD”.
3. Press x button continuously, then press [CD SYNC]
button.
4. The message “LIMIT OFF” is displayed.
5. Press ^/1 button to the set OFF.
19
HCD-NXM4D
[GENERAL DESCRIPTION]
The Test Mode allows you to make diagnosis and adjustment easily
using the remote commander and monitor TV. The instructions,
diagnostic results, etc. are given on the on-screen display (OSD).
The Test Mode allows you to make diagnosis and adjustment easily
using the remote commander and monitor TV. The instructions,
diagnostic results, etc. are given on the on-screen display (OSD).
[STARTING TEST MODE]
1. Press the +/1 button to turn the power on, and set the function
to DVD.
2. While pressing the x and Z button, turn the [VOLUME]
knob clockwise to enter the test mode.
3. It displays “SERVICE IN” on the liquid crystal display, and
displays the Test Mode Menu on the monitor screen as follows.
(At the bottom of the menu screen, the model name and
revision number are displayed)
(At the bottom of the menu screen, the model name and
revision number are displayed)
Test Mode Menu
0. Syscon Diagnosis
1. Drive Auto Adjustment
2. Drive Manual Operation
3. Mecha Aging
4. Emergency History
5. Mecha Error History
6. Version Information
7. Video Level Adjustment
1. Drive Auto Adjustment
2. Drive Manual Operation
3. Mecha Aging
4. Emergency History
5. Mecha Error History
6. Version Information
7. Video Level Adjustment
Exit: POWER Key
Model :DHC-NXMxx
Revision :x.xx
Revision :x.xx
4. To execute each function, select the desired menu and press
its number on the remote commander.
5. To release from test mode, press the +/1 button and turn the
power off.
[OPERATING TEST MODE]
0.
SYSCON DIAGNOSIS
The same contents as board detail check by serial interface can be
checked from the remote commander operation.
On the Test Mode Menu screen, press [10/0] key on the remote
commander, and the following Check Menu will be displayed.
checked from the remote commander operation.
On the Test Mode Menu screen, press [10/0] key on the remote
commander, and the following Check Menu will be displayed.
### Syscon Diagnosis ###
Check Menu
0. Quit
1. All
2. Version
3. EEPROM
4. GPIO
5. SD Bus
6. Video
1. All
2. Version
3. EEPROM
4. GPIO
5. SD Bus
6. Video
0-0. Quit
Quit the Syscon Diagnosis and return to the Test Mode Menu.
Quit the Syscon Diagnosis and return to the Test Mode Menu.
0-1. All (All items continuous check)
This menu checks all diagnostic items continuously. Normally, all
items are checked successively one after another automatically
unless an error is found, but at a certain item that requires judgment
through a visual check to the result, the following screen is displayed
for the key entry.
This menu checks all diagnostic items continuously. Normally, all
items are checked successively one after another automatically
unless an error is found, but at a certain item that requires judgment
through a visual check to the result, the following screen is displayed
for the key entry.
• Example display
### Syscon Diagnosis ###
Diag All Check
No.2 Version
2-3. ROM Check Sum
Check Sum = xxxx
Press NEXT Key to Continue
Press PREV Key to Repeat
Press PREV Key to Repeat
For the ROM Check, the check sum calculated by the Syscon is
output, and therefore you must compare it with the specified value
for confirmation.
Following the message, press the [NEXT ] button to go to the
next item, or press the [ PREV] button to repeat the same
operation again.
To quit the diagnosis and return to Check Menu screen, press the
[RETURN] key on the remote commander to display Check Menu.
output, and therefore you must compare it with the specified value
for confirmation.
Following the message, press the [NEXT ] button to go to the
next item, or press the [ PREV] button to repeat the same
operation again.
To quit the diagnosis and return to Check Menu screen, press the
[RETURN] key on the remote commander to display Check Menu.
• Error occurred
If an error occurred, the diagnosis is suspended and error is displayed.
Press the [RETURN] key on the remote commander to quit the
diagnosis, or press the [ PREV] button to repeat the same check
where an error occurred, or press the [NEXT ] button to continue
the check from the item next to faulty item.
If an error occurred, the diagnosis is suspended and error is displayed.
Press the [RETURN] key on the remote commander to quit the
diagnosis, or press the [ PREV] button to repeat the same check
where an error occurred, or press the [NEXT ] button to continue
the check from the item next to faulty item.
General Description of Checking Method
Selecting 2 and subsequent items calls the submenu screen of each
item. And selecting 2 and subsequent items executes respective
menus and outputs the results.
For the contents of each submenu, see “Check Items List” as below.
Selecting 2 and subsequent items calls the submenu screen of each
item. And selecting 2 and subsequent items executes respective
menus and outputs the results.
For the contents of each submenu, see “Check Items List” as below.
Check Items List:
0-2.
Version
0-2-1.
All
0-2-2.
Revision
0-2-3.
ROM Check Sum
0-2-4.
Model Type
0-2-5.
Region
0-3.
EEPROM Check
0-3-1.
Sampling Check
0-3-2.
Detail Check
0-4.
GP I/O Check
0-5.
SD Bus Check
0-6.
Video Check
0-2. Version
0-2-2.
0-2-2.
Revision
The revision number of ROM (IC206) that the program
for the DVD system processor (IC207) is stored.
The revision number of ROM (IC206) that the program
for the DVD system processor (IC207) is stored.
0-2-3.
ROM Check Sum
Check sum is calculated.
(4 digits hexadecimal number)
Check sum is calculated.
(4 digits hexadecimal number)
0-2-4.
Model Type
Model name is displayed. (DHC-NXMXX)
Model name is displayed. (DHC-NXMXX)
>
.
>
.
DVD OSD Test Mode
20
HCD-NXM4D
0-2-5.
Region
Model destination code is displayed. (2 digits number)
Model destination code is displayed. (2 digits number)
0-3. EEPROM Check
0-3-1.
0-3-1.
Sampling Check
EEPROM check at every 64 words.
It compares read data with write data of each address.
When there are discrepancies between two data, it displays
error.
EEPROM check at every 64 words.
It compares read data with write data of each address.
When there are discrepancies between two data, it displays
error.
0-3-2.
Detail Check
EEPROM check at every 1 word.
It compares read data with write data of each address.
When there are discrepancies between two data, it displays
error.
EEPROM check at every 1 word.
It compares read data with write data of each address.
When there are discrepancies between two data, it displays
error.
0-4. GP I/O Check
Pull up/down setting check of the DVD system processor (IC207)
pin 150, 151 and 154 (for clock setting port).
Pull up/down setting check of the DVD system processor (IC207)
pin 150, 151 and 154 (for clock setting port).
0-5. SD Bus Check
SD bus data check between DVD decoder (IC701) and D-RAM
(IC706).
SD bus data check between DVD decoder (IC701) and D-RAM
(IC706).
0-6. Video Check
Output the color bars for video level adjustment.
Output the color bars for video level adjustment.
1.
DRIVE AUTO ADJUSTMENT
On the Test Mode Menu screen, press the [1] key on the remote
commander, and the Adjustment Menu will be displayed.
commander, and the Adjustment Menu will be displayed.
•Use DVD reference disc unless othermise indicated.
[DVD reference disc]
• LUV-P01 (4-999-032-01) (CD)
•TDV-540C (J-2501-235-A) (DVD-DL)
• TDV-520CSO (J-2501-236-A) (DVD-SL)
•TDV-540C (J-2501-235-A) (DVD-DL)
• TDV-520CSO (J-2501-236-A) (DVD-SL)
## Drive Auto Adjustment ##
Adjustment Menu
0. ALL
1. DVD-SL
2. CD
3. DVD-DL
1. DVD-SL
2. CD
3. DVD-DL
Exit: RETURN
Normally, [10/0] is selected to adjust DVD (single layer), CD and
DVD (dual layer) in this order. But, individual items can be adjusted
for the case where adjustment is suspended due to an error. In this
mode, the adjustment can be made easily through the operation
following the message displayed on the screen.
The disc used for adjustment must be the one specified for
adjustment.
DVD (dual layer) in this order. But, individual items can be adjusted
for the case where adjustment is suspended due to an error. In this
mode, the adjustment can be made easily through the operation
following the message displayed on the screen.
The disc used for adjustment must be the one specified for
adjustment.
1-0. ALL
Press the [10/0] key on the remote commander, and the servo set
data in EEPROM will be initialized. Then, 1. DVD-SL disc, 2. CD
disc and 3. DVD-DL disc are adjusted in this order.
Each time one disc was adjusted, it is ejected. Replace it with the
specified disc following the message. You can finish the adjustment
by pressing the [RETURN] button on the remote commander.
Press the [10/0] key on the remote commander, and the servo set
data in EEPROM will be initialized. Then, 1. DVD-SL disc, 2. CD
disc and 3. DVD-DL disc are adjusted in this order.
Each time one disc was adjusted, it is ejected. Replace it with the
specified disc following the message. You can finish the adjustment
by pressing the [RETURN] button on the remote commander.
Note: During adjustment of each disc, the measurement for disc type judg-
ment is made. As automatic adjustment does not judge the disc
type unlike conventional models, take care not to insert wrong type
discs. Also, do not give a shock during adjustment.
type unlike conventional models, take care not to insert wrong type
discs. Also, do not give a shock during adjustment.
1-1. DVD-SL (single layer)
Press the [1] key on the remote commander and insert a DVD single
layer disc following the message. Then the adjustment will be made
through the steps below, then adjusted values will be written to the
EEPROM.
Press the [1] key on the remote commander and insert a DVD single
layer disc following the message. Then the adjustment will be made
through the steps below, then adjusted values will be written to the
EEPROM.
DVD Single Layer Disc Adjustment Steps:
1.
Sled reset
2.
Disc check memory SL
3.
Wait 300 msec
4.
Set disc type SL
5.
LD on
6.
Spindle start
7.
Wait 1 sec
8.
Focus servo on 0
9.
Auto track offset adjust
10. CLVA on
11. Wait 500 msec
12. Tracking on
13. Wait 1 sec
14. Sled on
15. Check CLV on
16. Auto focus offset adjust
17. Auto focus gain adjust
18. Auto focus offset adjust
19. EQ boost adjust
20. Auto track gain adjust
21. All servo stop
22. EEP copy loop filter offset
11. Wait 500 msec
12. Tracking on
13. Wait 1 sec
14. Sled on
15. Check CLV on
16. Auto focus offset adjust
17. Auto focus gain adjust
18. Auto focus offset adjust
19. EQ boost adjust
20. Auto track gain adjust
21. All servo stop
22. EEP copy loop filter offset
1-2. CD
Press the [2] key on the remote commander and insert a CD disc
following the message. Then the adjustment will be made through
the steps below, then adjusted values will be written to the EEPROM.
Press the [2] key on the remote commander and insert a CD disc
following the message. Then the adjustment will be made through
the steps below, then adjusted values will be written to the EEPROM.
CD Adjustment Steps
1.
Sled tilt rest
2.
Disc check memory CD
3.
Wait 500 msec
4.
Set disc type CD
5.
LD on
6.
Spindle start
7.
Wait 500 msec
8.
Focus servo on 0
9.
Auto track offset adjust
10. CLVA on
11. Wait 500 msec
12. Tracking on
13. (TC display start)
14. Wait 1 sec
15. Sled ON
16. Check CLV on
17. Auto focus offset adjust
18. Auto focus gain adjust
19. Auto focus offset adjust
20. EQ boost adjust
21. Auto track gain adjust
22. All servo stop
11. Wait 500 msec
12. Tracking on
13. (TC display start)
14. Wait 1 sec
15. Sled ON
16. Check CLV on
17. Auto focus offset adjust
18. Auto focus gain adjust
19. Auto focus offset adjust
20. EQ boost adjust
21. Auto track gain adjust
22. All servo stop
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