Sony CMT-CP500MD / HCD-CP500MD Service Manual ▷ View online
21
HCD-CP500MD
MD SECITON
1. PRECAUTIONS FOR USE OF TEST MODE
• As operations related to loading 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 Z (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 Z (MD) button after pressing the
Even if the Z (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 Z (MD) button after pressing the
MENU/NO “R”
button and the rotation of disc is stopped.
1-1. Recording laser emission mode and operating buttons
• Continuous recording mode (CREC 1MODE)
• Laser power check mode (LDPWR CHECK)
• Laser power adjustment mode (LDPWR ADJUST)
• Comparison with initial Iop value written in nonvolatile memory (Iop Compare)
• Write current Iop value in read nonvolatile memory using microprocessor (Iop NV Save)
• Traverse (MO) check (EF MO CHECK)
• Traverse (MO) adjustment (EF MO ADJUST)
• When pressing the z
• Laser power check mode (LDPWR CHECK)
• Laser power adjustment mode (LDPWR ADJUST)
• Comparison with initial Iop value written in nonvolatile memory (Iop Compare)
• Write current Iop value in read nonvolatile memory using microprocessor (Iop NV Save)
• Traverse (MO) check (EF MO CHECK)
• Traverse (MO) adjustment (EF MO ADJUST)
• When pressing the z
MD
button.
2. SETTING THE TEST MODE
The following are two methods of entering the test mode.
Procedure : 1. Press the
Procedure : 1. Press the
?
/1
button to turn the power on.
2. Press the
[FUNCTION]
button to set the MD function.
3. Press three buttons of
ENTER/START
,
>
, and z
REC
(MD) simultaneously.
When the test mode is set, “[Check]” will be displayed. Pressing the
.
“R”
or
>
“R”
button between the following three
groups; ···
Tt [Check] Tt [Service] Tt [Develop] Tt ···.
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
If used, the unit may not operate normally.
If the [Develop] group is set accidentally, press the
MENU/NO “R”
button immediately to exit the [Develop] group.
3. RELEASING THE TEST MODE
Press the
[REPEAT STEREO/MONO]
button twice to display “Initialize”, then release the MD test mode.
4. BASIC OPERATIONS OF THE TEST MODE
All operations are performed using the
.
“R”
,
>
“R”
,
ENTER/YES “R”
and
MENU/NO “R”
.
The functions of these buttons are as follows.
Function name
Function
.
“R”
, >
“R”
buttons
Changes parameters and modes
ENTER/YES “R”
button
Proceeds onto the next step. Finalizes input
MENU/NO “R”
button
Returns to previous step. Stops operations
22
HCD-CP500MD
5. SELECTING THE TEST MODE
There are 26 types of test modes as shown below. The groups can be switched by pressing the
.
“R”
or
>
“R”
button. After selecting the
group to be used, press the
ENTER/YES “R”
button. After setting a certain group, pressing the
.
“R”
or
>
“R”
button switches modes
shown below.
Refer to “Group” in the table for details can be selected.
All items used for servicing can be treated using group [Service]. So be carefully not to enter other groups by mistake.
Refer to “Group” in the table for details can be selected.
All items used for servicing can be treated using group [Service]. So be carefully not to enter other groups by mistake.
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
If used, the unit may not operate normally.
If the [Develop] group is set accidentally, press the
MENU/NO “R”
button immediately to exit the [Develop] group.
• For details of each adjustment mode, refer to “5. Electrical Adjustments”.
For details of “Err Display”, refer to “Self-Diagnosis Function” on page 3.
• If a different mode has been selected by mistake, press the
MENU/NO “R”
button to release that mode.
• Modes with (
×
) 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 “R”
button to release the mode immediately.
Display
AUTO CHECK
Err Display
TEMP ADJUST
LDPWR ADJUST
Iop Write
Iop NV Save
EF MO ADJUST
EF CD ADJUST
FBIAS ADJUST
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
CPLAY 1MODE
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
Auto gain output level adjustment (MO)
Auto gain output level 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
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
23
HCD-CP500MD
Function
N X MD
x (MD)
M
“R”
m
“R”
PLAY MODE
REC MODE
MD Z
REPEAT STEREO/MONO
5-1. Operating the Continuous Playback Mode
1. Entering the continuous playback mode
(1)
(1)
Set the disc in the unit. (Whichever recordable discs or discs for playback only are available)
(2)
Press the
.
“R”
or
>
“R”
button to display “CPLAY 1MODE” (C34).
(3)
Press the
ENTER/YES “R”
button to change the display to “CPLAY1MID”.
(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)
(1)
Press the
ENTER/YES “R”
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)
(1)
Press the
MENU/NO “R”
button. The display will change to “CPLAY 1MODE” (C34).
(2)
Press the Z (MD) button and take out the disc.
Note:
The playback start addresses for IN, MID, and OUT are as follows.
IN
: 40h cluster
MID
: 300h cluster
OUT
: 700h cluster
5-2. Operating the Continuous Recording Mode (Use only when performing self-recording/palyback check)
1. Entering the continuous recording mode
(1)
(1)
Set a recordable disc in the unit.
(2)
Press the
.
“R”
or
>
“R”
button to display “CREC 1MODE” (C35).
(3)
Press the
ENTER/YES “R”
button to change the display to “CREC 2MID”.
(4)
When access completes, the display changes to “CREC (1
)” and “REC” is displayed.
Note:
The numbers “ ” displayed shows you the recording position addresses.
2. Changing the parts to be recorded
(1)
(1)
When the
ENTER/YES “R”
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 “CREC (1
)” and “REC” is displayed.
Note:
The numbers “ ” displayed shows you the recording position addresses.
3. Ending the continuous recording mode
(1)
(1)
Press the
MENU/NO “R”
button. The display changes to “CREC 1MODE” (C35) and “REC” goes off.
(2)
Press the Z (MD) button and take out 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 “R”
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.
6. FUNCTIONS OF OTHER BUTTONS
“CPLAY 1MID”
t “CPLAY 1OUT” t “CPLAY 1IN”
“CREC 1MID”
t “CREC 1OUT” t “CREC 1IN”
Contents
Sets continuous playback when this is pressed in the STOP state. When this is pressed during continu-
ous playback, playback position moves.
ous playback, playback position moves.
Stops continuous playback and continuous recording
The sled moves to the outer circumference only when this is pressed
The sled moves to the inner circumference only when this is pressed
Switches the spindle servo mode (CLV S
y CLV A)
Switches the displayed digit each time the button is pressed
Ejects the disc
Releases the test mode
24
HCD-CP500MD
8. AUTOMATIC SELF-DIAGNOSIS FUNCTION
This test mode performs CREC and CPLAY automatically for mainly checking the characteristics of the optical pick-up.
To perform this test mode, the laser power must first be checked.
Perform AUTO CHECK after the laser power check and Iop Compare.
To perform this test mode, the laser power must first be checked.
Perform AUTO CHECK after the laser power check and Iop Compare.
Procedure:
1.
1.
Press the
.
“R”
or
>
“R”
button to display “AUTO CHECK” (C01).
2.
Press the
ENTER/YES “R”
button. If “LDPWR
” is displayed, it means that the laser power check has not been performed.
In this case, perform the laser power check and Iop Compare, and then repeat from enter the MD test mode.
3.
If a disc is in the mechanical deck, it will be ejected forcibly.
“DISC IN” will be displayed in this case. Load a test disc (MDW-74/GA-1) which can be recorded.
“DISC IN” will be displayed in this case. Load a test disc (MDW-74/GA-1) which can be recorded.
4.
If a disc is loaded at step 3, the check will start automatically.
5.
When “XX CHECK” is displayed, the item corresponding to XX will be performed.
When “06 CHECK” completes, the disc loaded at step 3 will be ejected. “DISC IN” will be displayed. Load the check disc (TDYS-1).
When “06 CHECK” completes, the disc loaded at step 3 will be ejected. “DISC IN” will be displayed. Load the check disc (TDYS-1).
6.
When the disc is loaded in step 5, the check will automatically be resumed from “07 CHECK”.
7.
After completing to “0C CHECK” of test item 12, check OK or NG will be displayed. If all items are OK, “CHK ALL OK” will be
displayed. If any item is NG, it will be displayed as “NG:xxxx”.
displayed. If any item is NG, it will be displayed as “NG:xxxx”.
When “CHK ALL OK” is displayed, it means that the optical pick-up is normal. Check the operations of other parts (spindle motor, sled
motor, etc.).
When displayed as “NG:xxxx”, it means that the optical pick-up is faulty. In this case, replace the optical pick-up.
motor, etc.).
When displayed as “NG:xxxx”, it means that the optical pick-up is faulty. In this case, replace the optical pick-up.
9. INFORMATION
Display the software version.
Procedure:
1.
1.
Press the
.
“R”
or
>
“R”
button to display “INFORMATION” (C31).
2. Press the
ENTER/YES “R”
button.
3. The software version will be displayed.
4. Press the
4. Press the
MENU/NO “R”
button to end this mode.
10. IOP DATA RECORDING AND DISPLAY WHEN OPTICAL PICK-UP AND NON-VOLATILE MEMORY (IC195 OF BD
BOARD) ARE REPLACED
The IOP value labeled on the optical pick-up can be recorded in the non-volatile memory. By recording the value, it will eliminate the need
to look at the value on the label of the optical pick-up. When replacing the optical pick-up or non-volatile memory (IC195 of BD (MD)
board), record the IOP value on the optical pick-up according to the following procedure.
to look at the value on the label of the optical pick-up. When replacing the optical pick-up or non-volatile memory (IC195 of BD (MD)
board), record the IOP value on the optical pick-up according to the following procedure.
Record Procedure:
1. Press the
1. Press the
?
/
1
button to turn the power on.
2. Press the
[FUNCTION]
button to set the MD function.
3. Press three buttons of
[ENTER/START]
,
>
and z
REC
(MD) simultaneously to enter the MD test mode and display “[Check]”.
4. Press the
.
“R”
or
>
“R”
button to display “[Service]”.
5. Press the
ENTER/YES “R”
button to display “AUTO CHECK”, and press the
>
“R”
button to display “Iop Write”.
6. Press the
ENTER/YES “R”
button.
7. The display becomes “Ref= @@@.@” (@ is an arbitrary number) and the numbers which can be changed will blink.
8. Input the IOP value written on the optical pick-up.
8. Input the IOP value written on the optical pick-up.
To select the number
: Press the
.
“R”
or
>
“R”
button.
To select the digit
: Press the
[REC MODE]
button.
9. When the
ENTER/YES “R”
button is pressed, the display becomes “Measu=@@@.@” (@ is an arbitrary number).
10. As the adjustment results are recorded for the step 9 value. Leave it as it is and press the
ENTER/YES “R”
button.
11. “Complete!” will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become “Iop
Write”.
12. Press the
[REPEAT STEREO/MONO]
button twice to complete. “Initialize” will be displayed and release the MD test mode.
Display Precedure:
1. Press the
1. Press the
?
/1
button to turn the power on.
2. Press the
[FUNCTION]
button to set the MD function.
3. Press three buttons of
[ENTER/START]
,
>
and z
REC
(MD) simultaneously to enter the MD test mode and display “[Check]”.
4. Press the
.
“R”
or
>
“R”
button to display “[Service]”.
5. Press the
ENTER/YES “R”
button to display “AUTO CHECK”, and press the
>
“R”
button to display “Iop Read”.
6. Press the
ENTER/YES “R”
button.
7. “@@.@/##.#” is displayed and the recorded contents are displayed.
@@.@ : Indicates the Iop value labeled on the pick-up.
##.#
##.#
: Indicates the Iop value after adjustment.
8. Press the
[REPEAT STEREO/MONO]
button twice to complete. “Initialize” will be displayed and release the MD test mode.
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