Sony HCD-CP500MD Service Manual page 37

14. ERROR RATE CHECK
14-1. CD Error Rate Check
Procedure:
1. Load the check disc (TDYS-1).
2. Press the or
. "R" > "R"
MODE" (C34).
3. Press the
ENTER/YES "R"
MID".
4. The display changes to "C =
5. Check that the C1 error rate is below 50.
6. Press the button to stop playback, then press the
MENU/NO "R"
Z (MD) button and take out the check disc.
14-2. MO Error Rate Check
Procedure:
1. Load the continuously-recorded disc. (Refer to "5. USING
THE CONTINUOUSLY RECORDED DISC" (See page 31))
2. Press the . "R" or > "R"
MODE" (C34).
3. Press the
ENTER/YES "R"
4. The display changes to "C1 =
5. If the C1 error rate is below 50, 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 disc.
15. FOCUS BIAS CHECK
Change the focus bias and check the focus tolerance amount.
Procedure:
1. Load the continuously-recorded disc. (Refer to "5. USING
THE CONTINUOUSLY RECORDED DISC" (See page 31))
2. Press the or
. "R" > "R"
MODE" (C34).
3. Press the
ENTER/YES "R"
MID".
4. Press the button when "C1 =
MENU/NO "R"
is displayed.
5. Press the or
. "R" > "R"
CHECK" (C16).
6. Press the
ENTER/YES "R"
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 50 and ADER is below 2.
7. Press the ENTER/YES "R"
".
Check that the C1 error is below 100 and ADER is below 2.
8. Press the ENTER/YES "R"
".
Check that the C1 error is below 100 and ADER is below 2
button, then press the Z (MD) button
9. Press the MENU/NO "R"
and take out the disc.
Note: If the C1 error and ADER are above other than the specified
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 prop-
erly. Adjust perform the beginning again.
button and display "CPLAY1
button twice and display "CPLAY1
AD = )".
button to display "CPLAY1
button to display "CPLAY1MID".
AD = )".
button to display "CPLAY1
button twice to display "CPLAY1
AD =
button to display "FBIAS
button to display " / c =
button and display " /
button and display " /
16. AUTO GAIN CONTROL OUTPUT LEVEL
ADJUSTMENT
Be sure to perform this adjustment when the optical pick-up is
replaced.
If the adjustment results becomes "Adjust NG!", the optical pick-
up may be faulty or the servo system circuits may be abnormal.
16-1. CD Auto Gain Control Output Level Adjustment
Procedure:
1. Load the check disc (TDYS-1).
2. Press the
. m "R"
Set (CD)" (C11).
3. When the
ENTER/YES "R"
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 (MD) button and take out the check disc.
16-2. MO Auto Gain Control Output Level Adjustment
Procedure:
1. Load the test disc (MDW-74/GA-1).
2. Press the . "R"
(C10).
3. When the ENTER/YES "R"
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 (MD) button and take out the test disc.
)"
".
b =
a =
HCD-CP500K/CP500MD
or button to display "AG
M > "R"
button is pressed, the adjustment
or > "R" button to display "AG Set (MO)"
button is pressed, the adjustment
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