Sony HCD-J300 Service Manual page 25

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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.
Procedure:
1. Press the . "R"
2. Press the
ENTER/YES "R"
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.
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).
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".
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.
9. INFORMATION
Display the software version.
Procedure:
1. Press the . "R"
2. Press the
ENTER/YES "R"
3. The software version will be displayed.
4. Press the MENU/NO "R"
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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.
Record Procedure:
1. Press the / button to turn the power on.
? 1
[FUNCTION]
2. Press the
3. Press three buttons of
4. Press the
.
"R"
5. Press the
ENTER/YES "R"
6. Press the
ENTER/YES "R"
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.
To select the number
To select the digit
9. When the
ENTER/YES "R"
10. As the adjustment results are recorded for the step 9 value. Leave it as it is and press the
11. "Complete!" will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become "Iop
Write".
[REPEAT STEREO/MONO]
12. Press the
Display Precedure:
1. Press the button to turn the power on.
? / 1
[FUNCTION]
2. Press the
3. Press three buttons of
www
4. Press the
.
"R"
5. Press the
ENTER/YES "R"
6. Press the
ENTER/YES "R"
7. "@@.@/##.#" is displayed and the recorded contents are displayed.
.
@@.@ : Indicates the Iop value labeled on the pick-up.
##.# : Indicates the Iop value after adjustment.
[REPEAT STEREO/MONO]
8. Press the
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or > "R" button to display "AUTO CHECK" (C01).
button. If "LDPWR
or > "R" button to display "INFORMATION" (C31).
button.
button to end this mode.
button to set the MD function.
[SYNCHRO REC]
(MD), (TAPE) and
x m
or button to display "[Service]".
>
"R"
button to display "AUTO CHECK", and press the
button.
: Press the . or >
"R"
[REC MODE]
: Press the
button is pressed, the display becomes "Measu=@@@.@" (@ is an arbitrary number).
button twice to complete. "Initialize" will be displayed and release the MD test mode.
button to set the MD function.
[SYNCHRO REC]
(MD), (TAPE) and
x m
or button to display "[Service]".
>
"R"
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button to display "AUTO CHECK", and press the
y
button.
i
button twice to complete. "Initialize" will be displayed and release the MD test mode.
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2 9
8
" is displayed, it means that the laser power check has not been performed.
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simultaneously to enter the MD test mode and display "[Check]".
>
"R"
button.
"R"
button.
simultaneously to enter the MD test mode and display "[Check]".
co
>
"R"
.
HCD-J300
9 4 2 8
0 5 8 2 9 9 4 2 8
button to display "Iop Write".
button.
ENTER/YES "R"
m
button to display "Iop Read".
9 9
9 9
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