Sony HCD-C5 Service Manual page 29

IOP DATA RECORDING AND DISPLAY WHEN OPTI-
CAL PICK-UP AND NON-VOLATILE MEMORY (IC195
OF BD (MD) 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 ?/1 button to turn the power on.
2. Press the FUNCTION z button to set the MD function.
3. Press three buttons of VOL - , x and CD SYNC HIGH ,
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 num-
ber) and the numbers which can be changed will blink.
8. Input the IOP value written on the optical pick-up.
To select the number : Press the
. "R" or > "R" button.
Press two buttons of VOL - and
To select the digit :
CD Z simultaneously.
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 "R" button, or press two buttons of
VOL - and MD Z simultaneously. to complete. "Initialize"
will be displayed and release the MD test mode.
Display Precedure:
1. Press the ?/1 button to turn the power on.
2. Press the FUNCTION z button to set the MD function.
3. Press three buttons of VOL - , x , and CD SYNC HIGH
simultaneously to enter the MD test mode and display
"[Check]".
4. Press the . "R" or > "R" button to display "[Ser-
vice]".
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 dis-
played.
@@.@ : Indicates the Iop value labeled on the pick-up.
##.# : Indicates the Iop value after adjustment.
8. Press the REPEAT "R" button to complete. "Initialize" will
be displayed and release the MD test mode.
WHEN MEMORY NG IS DISPLAYED
If the nonvolatile memory data is abnormal, "E001 MEMORY NG"
will be displayed so that the MD deck does not continue opera-
tions. In this case, set the test mode promptly and perform the
following procedure.
Procedure:
1. Enter the MD test mode.
2. Normally a message for selecting the test mode will be displayed.
However if the nonvolatile memory is abnormal, the following
will be displayed "INIT EEP?".
3. Press the and MD Z buttons simultaneously.
x
4. Press the or
. "R" > "R"
5. Press the
ENTER/YES "R"
successfully overwritten, the normal MD test mode will be set
and a message to select the MD test mode will be displayed.
HCD-C5
button to display "MDM-7B4M".
button. If the nonvolatile memory is
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