Sony DCR-DVD108 (serv.man3) Service Manual ▷ View online
6-42
DCR-DVD108_ADJ
Order
Adjustment item
Message
Disc
Operation
1
No Disc
Click the
[START]
button of “SERVO
Adjustment”.
2
Servo Param
Initialize
Set the DVD-RW Reference + DOW Disc, and
with the disc cover left open, click the
with the disc cover left open, click the
[OK]
button in the message window.
3
-RW Ref
(If the adjustment result of previous item is
OK, this item is executed successively.)
OK, this item is executed successively.)
4
-RW Self
(If the adjustment result of previous item is
OK, this item is executed successively.)
OK, this item is executed successively.)
5
-R Self
DVD-R Disc
for Self Jitter
for Self Jitter
Remove the DVD-RW Reference + DOW
Disc, and set the DVD-R Disc for Self Jitter,
and then close the disc cover and click the
Disc, and set the DVD-R Disc for Self Jitter,
and then close the disc cover and click the
[OK]
button in the message window.
6
+RDL Self
Remove the DVD-R Disc for Self Jitter, and
set the DVD+RDL Self Disc, and then close
the disc cover and click the
set the DVD+RDL Self Disc, and then close
the disc cover and click the
[OK]
button in the
message window.
7
Data Dump
(If the adjustment result of previous item is
OK, this item is executed successively.)
OK, this item is executed successively.)
8
No Disc
Remove the DVD+RDL Self Disc.
(On the AUDIT screen, if the status lamps of
respective adjustment buttons are all lit in
green, the adjustment is over.)
(On the AUDIT screen, if the status lamps of
respective adjustment buttons are all lit in
green, the adjustment is over.)
Note: Before exiting the AUDIT, click the
[SET]
button of “After completing the TEST” to cancel the TEST mode.
DVD-RW
Reference + DOW
Disc
Reference + DOW
Disc
DVD+RDL
Self Disc
Self Disc
2-5-2.
Adjusting Method
6-43
DCR-DVD108_ADJ
2-6.
TROUBLESHOOTING
2-6-1.
Fundamental Troubleshooting Flow
Yes
No
No
Yes
End
OK?
Execute <ADJUST>
Faulty part isolation processing
OK?
Execute <DIAGNOSIS>
Initial inspection
VC Board recovery processing
Yes
No
OK?
Execute <ADJUST>
(MD Block is faulty)
Return to initial inspection
Replace MD Block
Faulty part isolation processing
6-44
DCR-DVD108_ADJ
Priority varies depending on the isolated item
Execute <ADJUST>
Restore original MD Block
Replace Driver IC
Replace DSP IC
Yes
No
End
OK?
Yes
No
OK?
Execute <ADJUST>
Replace RF IC
Replace MD Block
VC Board recovery processing
6-45
DCR-DVD108_ADJ
Sensor
Purpose
Trouble Symptom
Cause
Repair
Faulty OP
Replace the MD block
Faulty Driver IC
Replace the VC board
Faulty connection of flexible
board
board
Check flexible board
Faulty OP
Replace the MD block
Faulty sensor, Faulty
connection of flexible board
connection of flexible board
Temperature sensor
t Replace the MD block
Dew sensor
t Check flexible board
Shock sensor
t Replace the VC board
t Replace the MD block
Dew sensor
t Check flexible board
Shock sensor
t Replace the VC board
OP age-based change
Replace the MD block
Faulty operation of
mechanism
mechanism
Replace the MD block
Faulty DSP IC
Replace the VC board
Faulty RF IC
Replace the VC board
Seek
Purpose
Trouble Symptom
Cause
Repair
Check the seek performance
OP age-based change
Readjust
Faulty mechanism
Replace the MD block
Faulty DSP IC
Replace the VC board
Faulty RF IC
Replace the VC board
Read
Purpose
Trouble Symptom
Cause
Repair
Check the read performance
OP age-based change
Readjust
LPP Error Rate, RF Jitter
Faulty mechanism
Replace the MD block
Faulty DSP IC
Replace the VC board
Faulty RF IC
Replace the VC board
Write
Purpose
Trouble Symptom
Cause
Repair
Check the write performance
OP age-based change
Readjust
Faulty mechanism
Replace the MD block
Faulty DSP IC
Replace the VC board
Faulty RF IC
Replace the VC board
Check operation of OP
(Focus, Tracking, Sled,
Spindle)
(Focus, Tracking, Sled,
Spindle)
Check the emission of laser
diode
diode
During LPP/ADIP Error Rate,
RF Jitter
RF Jitter
The following diagnosis is performed with DVD-R, DVD-RW and DVD+DLR
The diagnosis of DVD+RDL is performed with L0/L1 layer each layer.
The diagnosis of DVD+RDL is performed with L0/L1 layer each layer.
Check various sensors
(Dew sensor, Temperature
sensor, Shock sensor)
(Dew sensor, Temperature
sensor, Shock sensor)
(Seek between 2 points)
x
5
x
2 patterns
t Calculation of
average time
average time
Disc type check
(only DVD-R)
(only DVD-R)
2-6-2.
Diagnosis
Click on the first or last page to see other DCR-DVD108 (serv.man3) service manuals if exist.