Sony HCD-MD555 Service Manual ▷ View online
— 37 —
SECTION 5
TEST MODE
PRECAUTIONS FOR USE OF TEST MODE
•
Loading is performed regardless of the test mode operation. Therefore, be sure to check that the disc has stopped rotating before inserting
or removing the disc.
The disc does not stop rotating during continuous play, continuous record, and other modes even if you press the MD
or removing the disc.
The disc does not stop rotating during continuous play, continuous record, and other modes even if you press the MD
§ , so the disc will
be ejected while it is rotating.
Therefore, always press the MENU/NO button first, and then after the disc has stopped completely press the MD
Therefore, always press the MENU/NO button first, and then after the disc has stopped completely press the MD
§ button.
Modes and Button Operations in Which Recording Laser Emits Light
•
Continuous recording mode (CREC MODE)
•
Laser power check mode (LDPOWER CHECK)
•
Laser power adjustment mode (LDPOWER ADJUST)
•
Traverse (MO) check (EF MO CHECK)
•
Traverse (MO) adjustment (EF MO ADJUST)
•
When the REC button is pressed
SETTING THE TEST MODE
There are two ways of entering the test mode.
Method 1:
Turn on the power and select the MD function. Press the three buttons simultaneously, i.e., the ENTER/YES , NAME EDIT
, and MD3 buttons to activate the test mode.
“[Check]” appears, indicating that the test mode is activated. You can select the four test groups sequentially in order by
rotating MULTI JOG :
, and MD3 buttons to activate the test mode.
“[Check]” appears, indicating that the test mode is activated. You can select the four test groups sequentially in order by
rotating MULTI JOG :
N n Check N n Adjust N n Service N n Develop N n ......
Method 2:
Turn on the power and select the MD function. Press the three buttons simultaneously, i.e., the ENTER/YES , NAME EDIT
, and MD5 buttons to activate the test mode.
“TEMP CHECK” appears, indicating that the test mode is activated. When the test mode is activated using this method, the
contents of the “Check” group only that is described in the above Method 1 can be executed.
, and MD5 buttons to activate the test mode.
“TEMP CHECK” appears, indicating that the test mode is activated. When the test mode is activated using this method, the
contents of the “Check” group only that is described in the above Method 1 can be executed.
EXITING THE TEST MODE
Press the REPEAT button. If the disc has already been loaded, the disc is ejected to exit the test mode and return to the normal operation.
BASIC OPERATIONS OF THE TEST MODE
All operations of the test mode are performed using the MULTI JOG dial, ENTER/YES button, and MENU/NO button.
The functions of these buttons and dial are as follows.
The functions of these buttons and dial are as follows.
Function Name
Function
AMS dial
Changes parameters and operating modes.
YES button
Proceeds to the next step. Finalizes input.
MENU/NO button
Returns to previous step. Stops operations.
How to Insert and Remove the Disc during the Test Mode
1. Slot 1 only can be used during the test mode.
2. Press the MD
2. Press the MD
§ button to load a disc.
3. Press the MD
§ button to eject a disc also.
— 38 —
SELECTING THE TEST MODE
There are 31 different types of test mode as shown below. First, select a desired test group by turning the MULTI JOG dial. When the
desired test group is selected, press the ENTER/YES button to set it. After entering a group, select a desired test mode by turning the
MULTI JOG dial. For the contents of the selected test mode, refer to the column “Group” in the following table.
All operations that are required during service and maintenance are included in group “S”. Be careful not to enter any group other than “S”
by mistake.
desired test group is selected, press the ENTER/YES button to set it. After entering a group, select a desired test mode by turning the
MULTI JOG dial. For the contents of the selected test mode, refer to the column “Group” in the following table.
All operations that are required during service and maintenance are included in group “S”. Be careful not to enter any group other than “S”
by mistake.
Display
No.
Contents
Mark
Group (*)
TEMP CHECK
01
Temperature compensation offset check
C
S
LDPER CHECK
02
Laser power check
C
S
EF MO CHECK
03
Traverse (MD) check
C
S
EF CD CHECK
04
Traverse (CD) check
C
S
FBIAS CHECK
05
Focus bias check
C
S
Scurve CHECK
06
S-curve check
(
×
)
C
VERIFY MODE
07
Non-volatile memory check
(
×
)
C
DETRK CHECK
08
Detrack check
(
×
)
C
TEMP ADJUST
09
Temperature compensation offset adjustment
A
S
LDPWR ADJUST
10
Laser power adjustment
A
S
EF MO ADJUST
11
Traverse (MD) adjustment
A
S
EF CD ADJUST
12
Traverse (CD) adjustment
A
S
FBIAS ADJUST
13
Focus bias adjustment
A
S
EEP MODE
14
Non-volatile memory control
(
×
) (!)
D
MANUAL CMD
15
Command transfer
(
×
)
D
SVDATA READ
16
Status display
(
×
)
D
ERR DP MODE
17
Error history display, clear
S
SLED MOVE
18
Sled check
(
×
)
D
ACCESS MODE
19
Access check
(
×
)
D
0920 CHECK
20
Outermost circumference check
(
×
)
D
HEAD ADJUST
21
Head position check
(
×
)
D
CPLAY2 MODE
22
Same function as CPLAY MODE
(
×
)
D
CREC2 MODE
23
Same function as CREC MODE
(
×
)
D
ADJ CLEAR
24
Initialization of adjustment value in non-volatile memory
A
S
AG Set (MO)
25
Auto gain output level adjustment (MO)
A
S
AG Set (CD)
26
Auto gain output level adjustment (CD)
A
S
Iop Read
27
IOP data display
C
S
Iop Write
28
IOP data write
A
S
INFOMATION
29
Microprocessor version display
C
S
CPLAY MODE
30
Continuous playback mode
C
A
S
D
CREC MODE
31
Continuous recording mode
C
A
S
D
•
If you enter a wrong mode by mistake, immediately exit the mode by pressing the MENU/NO button.
•
The test groups with a (
×
) mark in the Mark column are not described in detail because these test groups are not used for servicing. If you
enter one of these groups by mistake, immediately exit the mode by pressing the MENU/NO button.
Be very careful not to enter any test groups with an exclamation mark (!) in the Mark column because the non-volatile memory can be
written in these test groups and the HCD-MD555 will not work correctly.
Be very careful not to enter any test groups with an exclamation mark (!) in the Mark column because the non-volatile memory can be
written in these test groups and the HCD-MD555 will not work correctly.
Displays on Screen when the Test Mode is Selected
•
Name of the selected test mode appears on the upper display.
•
MD1- appears in the lower display.
↑
Indicates the test mode number.
(*) Group
C: Check
C: Check
A: Adjust
S: Service
D: Develop
— 39 —
OPERATING THE CONTINUOUS PLAYBACK MODE
1. How to Enter the Continuous Playback Mode
1 Insert a disc in slot 1. (Either a recordable disc or playback-only disc can be used.) Press the MD§ button to load the disc.
2 Turn the MULTI JIG dial until “CPLAY MODE” (30) appears on the display.
3 Press the ENTER/YES button and the display changes to “CPLAY MID”.
4 When the disc is accessed, the display changes to “C=
3 Press the ENTER/YES button and the display changes to “CPLAY MID”.
4 When the disc is accessed, the display changes to “C=
AD=
”.
Note:
The number in the “ ” area on the display indicates the error rate and “ADER”.
2. How to Change the Playback Segment
1 If you press the ENTER/YES button during continuous playback, the display changes as shown below and a different segment can
be played back.
“CPLAY MID”
n “CPLAY OUT” n “CPLAY IN”
2 When access to the segment is completed, the display changes to “C=
AD=
”.
Note:
The number in the “ ” area on the display indicates the error rate and “ADER”.
3. Ending the Continuous Playback Mode
1 Press the EDIT/NO button. The display changes to “CPLAY MODE”.
2 To remove the disc, press the MD§ button.
2 To remove the disc, press the MD§ button.
Note:
The playback start addresses for IN, MID, and OUT are as follows.
IN
: 40h cluster
MID : 300h cluster
OUT : 700h cluster
OUT : 700h cluster
n
— 40 —
OPERATING THE CONTINUOUS RECORDING MODE (Use the following mode for the self record-and-playback check
only)
only)
1. How to Enter the Continuous Recording Mode
1 Insert a disc that can be used for recording, in slot 1. Press the MD§ button to load the disc.
2 Turn the MULTI JOG dial until “CREC MODE” (31) appears on the display.
3 Press the ENTER/YES button and the display changes to “CREC MID”.
4 When the disc is accessed, the display changes to “CREC (
3 Press the ENTER/YES button and the display changes to “CREC MID”.
4 When the disc is accessed, the display changes to “CREC (
” and
REC
turns on.
Note:
The number in the “ ” area on the display indicates the address of the recording segment.
2. How to Change the Recording Segment
1 If you press the ENTER/YES button during continuous recording, the display changes as shown below and a different segment can
be recorded.
“CPLAY MID”
n “CPLAY OUT” n “CPLAY IN”
2 When access to the segment is completed, the display changes to “CREC (
” and
REC
turns on.
Note:
The number in the “ ” area on the display indicates the address of the recording segment.
3. Ending the Continuous Recording Mode
1 Press the MENU/NO button. The display changes to “CREC MODE” and
REC
is turned off.
2 To remove the disc, press the MD§ button.
Note 1:
The recording start addresses for IN, MID, and OUT are as follows.
IN:40h cluster
MID: 300h cluster
OUT: 700h cluster
IN:40h cluster
MID: 300h cluster
OUT: 700h cluster
Note 2:
The MENU/NO button remains valid at all times and can be used to stop recording at any time.
Note 3:
Do not perform continuous recording for longer than 5 minutes.
Note 4:
Be careful not to give vibration during continuous recording.
Non-volatile Memory Mode (EEP Mode)
This mode is used to read and write the contents of the non-volatile memory.
This mode is not used during servicing. If you enter this mode by mistake, press the MENU/NO button immediately to exit it.
This mode is not used during servicing. If you enter this mode by mistake, press the MENU/NO button immediately to exit it.
FUNCTIONS OF OTHER BUTTONS
Function Name
Contents
fl
When pressed in the STOP state, continuous playback mode is entered. When pressed during continuous
playback, it turns on and off the tracking servo.
playback, it turns on and off the tracking servo.
p
Stops the continuous playback operation and continuous recording operation.
)
While this button is kept pressed, the sled moves to the outer circumference.
0
While this button is kept pressed, the sled moves to the inner circumference.
CLEAR
Toggles between pit and groove.
PLAY MODE
Switches the spindle servo modes. (CLV S
↔
CLV A).
LOWER DISPLAY
Changes the display contents.
MD
§
Ejects a disc.
PEREAT
Exits the test mode.
n
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