Sony DCR-DVD105 (serv.man3) Service Manual ▷ View online
6-66
DCR-DVD105
2-8-5.
DVD-RW Adjust
Terms
FE: Focus Error
FE: Focus Error
TE: Tracking Error
PD: Photo Detector
BLER: Block Error Rate
Wobble: Meander of a guide groove made in a disc in advance. The address information, etc. can be obtained by the wobble.
DPP: Differential Push Pull (A method for detecting the TE)
DPP: Differential Push Pull (A method for detecting the TE)
OP Sensitivity
Purpose
Adjust the gain of main beam
to correct the dispersion in OP
sensitivity
to correct the dispersion in OP
sensitivity
Trouble Symptom
Cause
OP
RF IC
RF IC
Repair
Replace MD block
Replace IC
Replace IC
Offset Adjust
Purpose
Cancel the FE/TE offset that
occurs in OP, RF amplifiers
occurs in OP, RF amplifiers
Trouble Symptom
Cause
RF IC
OP
OP
Repair
Replace IC
Replace MD block
Replace MD block
FE Balance
Purpose
Adjust the gain balance between
+ side and - side of PD Focus
Error
+ side and - side of PD Focus
Error
Trouble Symptom
Cause
OP
RF IC
RF IC
Repair
Replace MD block
Replace IC
Replace IC
Write FE Balance
Purpose
Adjust to the FE balanced value
that minimizes the wobble jitter
that minimizes the wobble jitter
Trouble Symptom
Cause
OP
RF IC
RF IC
Repair
Replace MD block
Replace IC
Replace IC
Servo Adjust
Purpose
Adjust DPP balance, TE
balance, FE gain, and TE gain
balance, FE gain, and TE gain
Trouble Symptom
Cause
OP
RF IC
RF IC
Repair
Replace MD block
Replace IC
Replace IC
Disc Distinction Threshold
Purpose
Adjust the threshold to
distinguish a disc
distinguish a disc
Trouble Symptom
OK at all time
Cause
Repair
Write Offset
Purpose
Cancel the FE, TE offset of
write power
write power
Trouble Symptom
OK at all times
Cause
Repair
Jitter & BLER
Purpose
Measure DVD-RW self
recording jitter and BLER
recording jitter and BLER
Trouble Symptom
Cause
OP
RF IC
RF IC
Repair
Replace MD block
Replace IC
Replace IC
6-67
DCR-DVD105
2-8-6.
DVD+RW Adjust
Terms
FE: Focus Error
FE: Focus Error
TE: Tracking Error
PD: Photo Detector
BLER: Block Error Rate
Wobble: Meander of a guide groove made in a disc in advance. The address information, etc. can be obtained by the wobble.
DPP: Differential Push Pull (A method for detecting the TE)
DPP: Differential Push Pull (A method for detecting the TE)
Wobble BPF Adjust
Purpose
Adjust the RF AMP wobble
BPF center frequency that
causes the dispersion in wobble
delay amount
BPF center frequency that
causes the dispersion in wobble
delay amount
Trouble Symptom
Cause
RF IC
OP
OP
Repair
Replace IC
Replace MD block
Replace MD block
Jitter & BLER
Purpose
Measure DVD+RW self
recording jitter and BLER
recording jitter and BLER
Trouble Symptom
Cause
OP
RF IC
RF IC
Repair
Replace IC
Replace MD block
Replace MD block
6-68
DCR-DVD105
6-3. SERVICE MODE
3-1.
ADJUSTMENT REMOTE COMMANDER
(RM-95)
(RM-95)
The adjustment remote commander (RM-95) is used for changing
the calculation coefficient in signal processing, EVR data, etc. .The
adjustment remote commander (RM-95) performs bi-directional
communication with the unit using the remote commander signal
line (LANC). The resultant data of this bi-directional communica-
tion is written in the non-volatile memory.
the calculation coefficient in signal processing, EVR data, etc. .The
adjustment remote commander (RM-95) performs bi-directional
communication with the unit using the remote commander signal
line (LANC). The resultant data of this bi-directional communica-
tion is written in the non-volatile memory.
1.
Using the Adjustment Remote Commander (RM-95)
1) Connect the adjustment remote commander to the LANC ter-
minal.
2) Set the HOLD switch of the adjustment remote commander
(RM-95) to “HOLD” (SERVICE position). If it has been prop-
erly connected, the LCD on the adjustment remote commander
(RM-95) will display as shown in Fig. 6-3-1.
erly connected, the LCD on the adjustment remote commander
(RM-95) will display as shown in Fig. 6-3-1.
Fig. 6-3-1
3) Operate the adjustment remote commander (RM-95) as fol-
lows.
•
Changing the page
The page increases when the EDIT SEARCH+ button is
pressed, and decreases when the EDIT SEARCH
The page increases when the EDIT SEARCH+ button is
pressed, and decreases when the EDIT SEARCH
−
button is
pressed. There are altogether 16 pages, from 0 to F.
•
Changing the address
The address increases when the FF (M) button is pressed,
and decreases when the REW (m) button is pressed. There
are altogether 256 addresses, from 00 to FF.
The address increases when the FF (M) button is pressed,
and decreases when the REW (m) button is pressed. There
are altogether 256 addresses, from 00 to FF.
•
Changing the data (Data setting)
The data increases when the PLAY (N) button is pressed,
and decreases when the STOP (x) button is pressed. There
are altogether 256 data, from 00 to FF.
The data increases when the PLAY (N) button is pressed,
and decreases when the STOP (x) button is pressed. There
are altogether 256 data, from 00 to FF.
•
Writing the adjustment data
The PAUSE button must be pressed to write the adjustment
data in the nonvolatile memory. (The new adjusting data will
not be recorded in the nonvolatile memory if this step is not
performed)
The PAUSE button must be pressed to write the adjustment
data in the nonvolatile memory. (The new adjusting data will
not be recorded in the nonvolatile memory if this step is not
performed)
4) After completing all adjustments, turn off the main power sup-
ply (8.4 V) once.
Page
Data
Address
Hexadecimal
notation
notation
LCD Display
Decimal notation
conversion value
conversion value
0 1 2 3 4 5 6 7 8 9 A B C D E F
0 1 2 3 4 5 6 7 8 9 A b c d E F
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
2.
Precautions Upon Using the Adjustment Remote
Commander (RM-95)
Commander (RM-95)
Mishandling of the adjustment remote commander may erase the
correct adjustment data at times. To prevent this, it is recommended
that all adjustment data be noted down before beginning adjust-
ments and new adjustment data after each adjustment.
correct adjustment data at times. To prevent this, it is recommended
that all adjustment data be noted down before beginning adjust-
ments and new adjustment data after each adjustment.
6-69
DCR-DVD105
3-2.
ADJUSTMENT REMOTE COMMANDER
(NEW LANC JIG)
(NEW LANC JIG)
The adjustment remote commander (New LANC Jig) is used for
changing the calculation coefficient in signal processing, EVR data,
etc. The adjustment remote commander (New LANC Jig) performs
bi-directional communication with the unit using the remote com-
mander signal line (LANC). The resultant data of this bi-direc-
tional communication is written in the non-volatile memory.
changing the calculation coefficient in signal processing, EVR data,
etc. The adjustment remote commander (New LANC Jig) performs
bi-directional communication with the unit using the remote com-
mander signal line (LANC). The resultant data of this bi-direc-
tional communication is written in the non-volatile memory.
1.
Using the Adjustment Remote Commander
(New LANC Jig))
(New LANC Jig))
1) Connect the adjustment remote commander (New LANC Jig)
to the LANC terminal via the LANC cable (J-6082-442-A).
2) Set the slide switch of the adjustment remote commander (New
LANC Jig) to “SERVICE” (SERVICE position). If it has been
properly connected, the LCD on the adjustment remote com-
mander (New LANC Jig) will display as shown in Fig. 6-3-2.
properly connected, the LCD on the adjustment remote com-
mander (New LANC Jig) will display as shown in Fig. 6-3-2.
Fig. 6-3-2
3) Operate the adjustment remote commander (New LANC Jig)
as follows.
•
Changing the page
The page increases when the Page+ (M) button is pressed,
and decreases when the Page
The page increases when the Page+ (M) button is pressed,
and decreases when the Page
−
(m) button is pressed.
•
Changing the address
The address increases when the ADD+ (N) button is
pressed, and decreases when the ADD
The address increases when the ADD+ (N) button is
pressed, and decreases when the ADD
−
(X) button is
pressed. There are altogether 256 addresses, from 00 to FF.
•
Changing the data (Data setting)
The data increases when the Data+ button is pressed, and
decreases when the Data
The data increases when the Data+ button is pressed, and
decreases when the Data
−
button is pressed. There are alto-
gether 256 data, from 00 to FF.
•
Writing the adjustment data
The Write (x) button must be pressed to write the adjust-
ment data in the nonvolatile memory. (The new adjusting
data will not be recorded in the nonvolatile memory if this
step is not performed)
The Write (x) button must be pressed to write the adjust-
ment data in the nonvolatile memory. (The new adjusting
data will not be recorded in the nonvolatile memory if this
step is not performed)
4) After completing all adjustments, turn off the main power sup-
ply (8.4 V) once.
2.
Precautions Upon Using the Adjustment Remote
Commander (New LANC Jig)
Commander (New LANC Jig)
Mishandling of the adjustment remote commander (New LANC
Jig) may erase the correct adjustment data at times. To prevent
this, it is recommended that all adjustment data be noted down
before beginning adjustments and new adjustment data after each
adjustment.
Jig) may erase the correct adjustment data at times. To prevent
this, it is recommended that all adjustment data be noted down
before beginning adjustments and new adjustment data after each
adjustment.
Page
Address
Data
p:00 a:00 d:00
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