Save The Error Status; Analyze And Repair The Errors Due To Mechanical Causes; Analyze And Repair The Errors Due To Electrical Causes - Sony MVC-CD300 Service Manual

2. Error Analysis and Repair Work Flow
2-1.

Save the Error Status

1. Execute [Error Log File].
Check and save the error logs by executing [Error Log File].
Then analyze the error contents more in detail referring to the
error code table.
2. Execute [EEPROM Menu].
Check and save the error logs by executing [EEPROM Menu].
Then analyze the error contents more in detail referring to the
error code table.
2-2. Analyze and Repair the Errors due to
Mechanical Causes
1. Check the outside appearance for defects.
Inspect the outside appearance of the mechanism. Replace the
defective parts when necessary.
2. Check operations of the machine for any defective
operation.
• Execute [Skew Adjust].
Play the CD back and check that the CD can be played back
correctly and no abnormal sound is generated, by executing
[Skew Adjust]. (Do not perform any adjustment in this step.
Adjustments are performed in the later steps in the work flow.)
Replace the defective parts when necessary.
• Execute [Seek Check] of [Write (CDR) Adjust].
Seek the CD-R and check that the seek operation can be
execute correctly and no abnormal sound is generated, by
executing [Seek Check] of [Write (CDR) Adjust]. Replace
the defective parts when necessary.
2-3. Analyze and Repair the Errors due to
Electrical Causes
1. Perform the electrical adjustments to locate and
analyze the cause of error.
• Perform all the electrical adjustments to reduce and to check
the trouble symptom. (However, never perform [EEPROM
initialize]. Perform [SKEW adjust] to check operation only
and do not perform the skew adjustment.)
If any item of the electrical adjustments cannot produce the
specified adjustment value, we can locate the cause of defect
if error is caused by the OP (optical device) or by any parts
other than the OP.
2. Adjustments after the OP (Optical device) is replaced
1. Execute [EEPROM initialize].
When [EEPROM initialize] is executed, all data is initialized.
2. Execute [Laser Power Adjust].
3. Execute [Skew Adjust].
When [Skew Adjust] is executed, the skew is adjusted.
4. Execute [Read (CD) Adjust].
When the [RF Jitter Check] results in error during [SKEW
Adjust], the [SKEW Adjust] is incorrect, Execute [SKEW
Adjust] again. (See Note.)
5. Execute [Write (CDR) Adjust].
When the [Self RF Jitter Check] results in error during [Write
(CDR) Adjust], the [SKEW Adjust] is incorrect, Execute
[SKEW Adjust] again. (See Note.)
6. Execute [Write (CDRW) Adjust].
When the [Self RF Jitter Check] results in error during [Write
(CDRW) Adjust], the [SKEW Adjust] is incorrect, Execute
[SKEW Adjust] again. (See Note.)
Note: If [RF Jitter Check] and/or [Self RF Jitter Check] results in error
even after the [SKEW Adjust] is executed again, return the original
OP (optical device) back into the machine and replace the MD-083
board and see the result of the MD-083 board replacement.
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