DOWNLOAD Sony DHC-NX5MD / HMC-NX5MD Service Manual ↓ Size: 5.53 MB | Pages: 86 in PDF or view online for FREE

Model
DHC-NX5MD HMC-NX5MD
Pages
86
Size
5.53 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
dhc-nx5md-hmc-nx5md.pdf
Date

Sony DHC-NX5MD / HMC-NX5MD Service Manual ▷ View online

21
[LED All Lit, Key Check Mode]
Procedure:
1. Press the
?/1
button to turn the power ON.
2. Press three buttons of
G
(MD),
A
(DISC 1), and 
[DISC 5]
simultaneously.
3. LEDs are all turned on.
Press the
G
(CD) button, and the key check mode is activated.
4. To release from this mode, press three buttons in the same
manner as step 2, or remove the power cord.
[CD Delivery 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
?/1
button to turn the power ON.
2. Press the
G
(MD) and 
[DISC 1]
 buttons simultaneously.
3. A message “LOCK” is displayed on the liquid crystal display
of the STR-NX5MD, and the CD delivery mode is set.
[CD/MD Test  Mode]
(In case of connected to the STR-NX5MD)
• If connected to the STR-NX5MD, the mode also acts as the
STR-NX5MD amplifer test mode.
Procedure:
1. Press the
?/1
button to turn the power ON.
2. Press three buttons of [ENTER/YES] + [DEMO] and [BAND] of
the STR-NX5MD simultaneously.
3. On liquid crystal display of the STR-NX5MD, the disc calendar
blinks, then the function which was set before the test mode
became active is displayed.
[CD/MD Test  Mode]
(In case of connected to the power feed jig)
Procedure:
1. Turn on the Power switch on the power feed jig.
2. Press three buttons of G (MD), A (DISC 1), and s (CD)
simultaneously.
3. Also, the other functions are enabled by pressing two buttons
simultaneously.
A combination of respective functions and buttons is as follows.
function
button
CD
AMS –
AMS –
AMS +
AMS +
FR
m
FF
M
MD AMS –
AMS –
AMS +
AMS +
FR
m
FF
M
SECTION 4
TEST MODE
[COLD RESET]
Procedure:
1. Press the
?/1
button to turn the power ON.
2. Press  CLEAR  (MD) and
s
(CD) buttons simultaneously.
22
Function name
MENU/NO button
ENTER/YES button
AMS
Left or Right
knob
Push
Function
Cancel or move to top hierarchy
Set
Select
Set submenu
4-1. PRECAUTIONS FOR USE OF TEST MODE
• As loading related operations will be performed regardless of the test mode operations being performed, be sure to check that the disc
is stopped before setting and removing it.
Even if the  A  (MD) button is pressed while the disc is rotating during continuous playback, continuous recording, etc., the disc will not
stop rotating.
Therefore, it will be ejected while rotating.
Be sure to press the  A  (MD) button after pressing the  MENU/NO  button and the rotation of disc is stopped.
4-1-1. Recording laser emission mode and operating buttons
• Continuous recording mode (CREC 1MODE) (C35)
• Laser power check mode (LDPWR CHECK) (C13)
• Laser power adjustment mode (LDPWR ADJUS) (C04)
• Iop check (Iop Compare) (C27)
• Iop value nonvolatile writing (Iop NV Save) (C06)
• Traverse (MO) check (EF MO CHECK) (C14)
• Traverse (MO) adjustment (EF MO ADJUS) (C07)
• When pressing the  REC MODE  button.
4-2. SETTING THE TEST MODE
The following are two methods of entering the test mode.
Procedure: Pressing the  ENTER/YES  button and the  A  (DISC 5) button while pressing the  m  (MD) button causes the program to
enter test mode.
When the test mode is set, “[Check]” will be displayed. Rotating the  MD JOG  knob switches between the following three
groups; ··· y Check y Service y Develop y ···.
NOTE: Do not use the test mode in the [Develop] group.
If used, the unit may not operate normally.
If the [Develop] group is set accidentally, press the  MENU/NO  button immediately to exit the [Develop] group.
4-3. EXITING THE TEST MODE
Press the  REPEAT  button. The disc is ejected when loaded, and “Standby” display blinks, and the STANDBY state is set.
4-4. BASIC OPERATIONS OF THE TEST MODE
All operations are performed using the  MD JOG  knob,  ENTER/YES  button, and  MENU/NO  button.
The functions of these buttons are as follows.
23
Display
AUTO CHECK
Err Display
TEMP ADJUS
LDPWR ADJUS
Iop Write
Iop NV Save
EF MO ADJUS
EF CD ADJUS
FBIAS ADJUS
AG Set (MO)
AG Set (CD)
TEMP CHECK
LDPWR CHECK
EF MO CHECK
EF CD CHECK
FBIAS CHECK
ScurveCHECK
VERIFYMODE
DETRK CHECK
0920 CHECK
Iop Read
Iop Compare
ADJ CLEAR
INFORMATION
CPLAY1MODE
CREC 1MODE
Details
Automatic self-diagnosis
Error history display, clear
Temperature compensation offset adjustment
Laser power adjustment
Iop data writing
Writes current Iop value in read nonvolatile memory using microprocessor
Traverse (MO) adjustment
Traverse (CD) adjustment
Focus bias adjustment
Focus, tracking gain adjustment (MO)
Focus, tracking gain adjustment (CD)
Temperature compensation offset check
Laser power check
Traverse (MO) check
Traverse (CD) check
Focus bias check
S-curve check
Nonvolatile memory check
Detrack check
Most circumference check
Iop data display
Comparison with initial Iop value written in nonvolatile memory
Initialization of nonvolatile memory for adjustment values
Display of microprocessor version, etc.
Continuous playback mode
Continuous recording mode
4-5. SELECTING THE TEST MODE
There are 26 types of test modes as shown below. The groups can be switched by rotating the  MD JOG  knob. After selecting the group to be
used, press the  ENTER/YES  button. After setting a certain group, rotating the  MD JOG  knob switches between these modes.
Refer to “Group” in the table for details selected.
All adjustments and checks during servicing can be performed in the test mode in the Service group.
• For details of each adjustment mode, refer to “5. Electrical Adjustments”.
For details of “Err Display”, refer to “Self-Diagnosis Function” on page 2.
• If a different mode has been selected by mistake, press the  MENU/NO  button to exit that mode.
• Modes with (X) in the Mark column are not used for servicing and therefore are not described in detail. If these modes are set acciden-
tally, press the  MENU/NO  button to exit the mode immediately.
No.
C01
C02
C03
C04
C05
C06
C07
C08
C09
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C25
C26
C27
C28
C31
C34
C35
Mark
Group
Check
Service
NOTE: Do not use the test mode in the [Develop] group.
If used, the unit may not operate normally.
If the [Develop] group is set accidentally, press the  MENU/NO  button immediately to exit the [Develop] group.
24
4-5-1. Operating the Continuous Playback Mode
1. Entering the continuous playback mode
1
Set the disc in the unit. (Whichever recordable discs or discs for playback only are available.)
2
Rotate the  MD JOG  knob and display “CPLAY1MODE” (C34).
3
Press the  ENTER/YES  button to change the display to “CPLAY1 MID”.
4
When access completes, the display changes to “C = 
 AD = 
”.
Note : The numbers “ ” displayed show you error rates and ADER.
2. Changing the parts to be played back
1
Press the  ENTER/YES  button during continuous playback to change the display as below.
When pressed another time, the parts to be played back can be moved.
2
When access completes, the display changes to “C = 
 AD = 
”.
Note : The numbers “ ” displayed show you error rates and ADER.
3. Ending the continuous playback mode
1
Press the  MENU/NO  button. The display will change to “CPLAY1MODE”(C34).
2
Press the  A  (MD) button to remove the disc.
Note : The playback start addresses for IN, MID, and OUT are as follows.
IN
40h cluster
MID 300h cluster
OUT 700h cluster
4-5-2. Operating the Continuous Recording Mode (Use only when performing self-recording/palyback check.)
1. Entering the continuous recording mode
1
Set a recordable disc in the unit.
2
Rotate the  MD JOG  knob and display “CREC 1MODE” (C35).
3
Press the  ENTER/YES  button to change the display to “CREC1 MID”.
4
When access completes, the display changes to “CREC1 (
)” and  
REC
  lights up.
Note : The numbers “ ” displayed shows you the recording position addresses.
2. Changing the parts to be recorded
1
When the  ENTER/YES  button is pressed during continuous recording, the display changes as below.
When pressed another time, the parts to be recorded can be changed.   
REC
  goes off.
2
When access completes, the display changes to “CREC1 (
)” and  
REC
  lights up.
Note : The numbers “ ” displayed shows you the recording position addresses.
3. Ending the continuous recording mode
1
Press the  MENU/NO  button. The display changes to “CREC 1MODE” (C35 ) and  
REC
  goes off.
2
Press the  A  (MD) button to remove the disc.
Note 1 : The recording start addresses for IN, MID, and OUT are as follows.
IN
40h cluster
MID
300h cluster
OUT
700h cluster
Note 2 : The  MENU/NO  button can be used to stop recording anytime.
Note 3 : Do not perform continuous recording for long periods of time above 5 minutes.
Note 4 : During continuous recording, be careful not to apply vibration.
“CPLAY1 MID” t “CPLAY1 OUT” t “CPLAY1 IN”  
“CREC1 MID” t “CREC1 OUT” t “CREC1 IN”  
Page of 86
Display

Click on the first or last page to see other DHC-NX5MD / HMC-NX5MD service manuals if exist.