HCD-PX333
9.Press the ENTER/YES “R” button to display “EFB = 
MO- P”.
Then, the optical
10.Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not press the . “R” or
>“R” button.
Traverse Waveform
A
VC
B
Specified value : Below 10% offset value
Offset value (%) = | IA – BI | X 100 |
|
2 (A + B)
11.Press the ENTER/YES “R” button to display “EF MO CHECK” (C14).
The disc stops rotating automatically.
12.Press the Z (MD) button and take out the disc.
13.Load the check disc
14.Press the . “R” or > “R” button and display “EF CD CHECK” (C15).
15.Press the ENTER/YES “R” button to display “EFB = 
CD”. Servo is imposed automatically.
16.Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not press the . “R” or
>“R” button.
Traverse Waveform
A
VC
B
Specified value : Below 10% offset value
Offset value (%) = | IA – BI | X 100 |
|
2 (A + B)
17.Press the ENTER/YES “R” button to display “EF CD CHECK” (C15).
18.Press the Z (MD) button and take out the check disc
Checking Location: BD (MD) board (see page 47)
6-7. Focus Bias Check
Change the focus bias and check the focus tolerance amount.
Procedure:
1.Load the test disc
2.Press the .“R” or >“R” button to display “CPLAY2MODE” (C36).
3.Press the ENTER/YES “R” button to display “CPLAY2MID”.
4.Press the MENU/NO “R” button when “C = 
AD = 
)” is displayed.
5.Press the . “R” or > “R” button to display “FBIAS CHECK” (C16).
6.Press the ENTER/YES “R” button to display “
/
c = 
”. The first four digits indicate the C1 error rate, the two digits after [/] indicate ADER, and the 2 digits after [c =] indicate the focus bias value.
Check that the C1 error is below 20 and ADER is below 2.
7.Press the ENTER/YES “R” button to display “
/
b = 
”. Check that the C1 error is about 200 and ADER is below 2.
8.Press the ENTER/YES “R” button to display “
/
a = 
”. Check that the C1 error is about 200 and ADER is below 2.
9.Press the MENU/NO “R” button, then press the Z (MD) button and take out the test disc.
6-8. C PLAY Check
MO Error Rate Check
Procedure:
1.Load the test disc
2.Press the .“R” or >“R” button to display “CPLAY2MODE” (C36).
3.Press the ENTER/YES “R” button to display “CPLAY2MID”.
4.The display changes to “C = 
AD = 
)”.
5.If the C1 error rate is below 20, check that ADER is 00.
6.Press the MENU/NO “R” button to stop playback, then press the Z (MD) button and take out the test disc.
CD Error Rate Check
Procedure:
1.Load the check disc
2.Press the .“R” or >“R” button to display “CPLAY2MODE” (C36).
3.Press the ENTER/YES “R” button to display “CPLAY2MID”.
4.The display changes to “C = 
AD = 
)”.
5.Check that the C1 error rate is below 20.
6.Press the MENU/NO “R” button to stop playback, then press the Z (MD) button and take out the check disc.
6-9. Self-Recording/playback Check
Prepare a continuous recording disc using the unit to be repaired and check the error rate.
Procedure:
1.Load a recordable disc (blank disc).
2.Press the . “R” or > “R” button to display “CREC 2MODE” (C37).
3.Press the ENTER/YES “R” button to display “CREC 2MID”.
4.When recording starts, lights up “ REC ” and display “CREC 2
@@@@” (@@@@ is the address).
5.About 1 minute later, press the MENU/NO “R” button to stop continuous recording.
6.Press the . “R” or > “R” button to display “CPLAY2 MODE” (C36).
7.Press the ENTER/YES “R” button to display “CPLAY2 MID”.
8.“C = 
AD = 
)” will be displayed.
9.Check that the C1 error becomes below 20 and the AD error below 2.
10.Press the MENU/NO “R” button to stop playback, then press the Z (MD) button and take out the disc.
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