Sony HCD-CL5MD Service Manual page 43

6-14. ERROR RATE CHECK
6-14-1. CD Error Rate Check
Checking Procedure :
1. Load a check disc (MD) TDYS-1.
2. Move ./> and display "CPLAY1MODE" (C34).
3. Press the ENTER/YES button and display "CPLAY1 MID".
4. The display changes to "C1 =
5. Check that the C1 error rate is below 20.
6. Press the MENU/NO button, stop playback, press the Z button,
and remove the test disc.
6-14-2. MO Error Rate Check
Checking Procedure :
1. Load a continuously recorded test disc (MDW-74/GA-1).
(Refer to "6-5. Using the Continuously Recorded Disc".)
2. Move ./> and display "CPLAY1MODE" (C34).
3. Press the ENTER/YES button and display "CPLAY1MID".
4. The display changes to "C1 =
5. If the C1 error rate is below 20, check that ADER is 00.
6. Press the MENU/NO button, stop playback, press the Z button,
and remove the test disc.
6-15. FOCUS BIAS CHECK
Change the focus bias and check the focus tolerance amount.
Checking Procedure :
1. Load a continuously recorded test disc (MDW-74/GA-1).
(Refer to "6-5. Using the Continuously Recorded Disc".)
2. Move ./> and display "CPLAY1 MODE"(C34).
3. Press the ENTER/YES button and display "CPLAY1 MID".
4. Press the MENU/NO button when "C1 =
displayed.
5. Move ./> and display "FBIAS CHECK"(C16).
6. Press the ENTER/YES button and display "
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 button and display "
Check that the C1 error is below 100 and ADER is below 2.
8. Press the ENTER/YES button and display "
Check that the C1 error is below 100 and ADER is below 2
9. Press the MENU/NO button, next press the Z button and
remove the continuously recorded disc.
Note 1 : If the C1 error and ADER are above other than the speci-
fied value at points a (step 8. in the above) or b (step 7. in
the above), the focus bias adjustment may not have been
carried out properly. Adjust perform the beginning again.
AD = ".
AD = ".
AD = " is
/ c = ".
/ b = ".
/ a = ".
6-16. AUTO GAIN CONTROL OUTPUT LEVEL
ADJUSTMENT
Be sure to perform this adjustment when the Optical pick-up is re-
placed.
If the adjustment results becomes "Adjust NG!", the Optical pick-
up may be faulty or the servo system circuits may be abnormal.
6-16-1. CD Auto Gain Control Output Level Adjustment
Adjusting Procedure :
1. Insert the check disc (MD) TDYS-1.
2. Move ./> to display "AG Set (CD)" (C11).
3. When the ENTER/YES button is pressed, the adjustment will
be performed automatically.
"Complete!" will then be displayed momentarily when the value
is recorded in the non-volatile memory, after which the display
changes to "AG Set (CD)" (C11).
4. Press the Z button and remove the disc.
6-16-2. MO Auto Gain Control Output Level Adjustment
Adjusting Procedure :
1. Insert the reference disc (MDW-74/GA-1) for recording.
2. Move ./> to display "AG Set (MO)" (C10).
3. When the ENTER/YES button is pressed, the adjustment will
be performed automatically.
"Complete!" will then be displayed momentarily when the value
is recorded in the non-volatile memory, after which the display
changes to "AG Set (MO)" (C10).
4. Press the Z button and remove the disc.
HCD-CL5MD
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