DOWNLOAD Sony DCR-DVD105 (serv.man3) Service Manual ↓ Size: 1.63 MB | Pages: 82 in PDF or view online for FREE

Model
DCR-DVD105 (serv.man3)
Pages
82
Size
1.63 MB
Type
PDF
Document
Service Manual
Brand
Device
Movie / SECTION 6 ADJUSTMENTS BRAZIL
File
dcr-dvd105-sm3.pdf
Date
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6-62
DCR-DVD105
+RW Seek
Purpose
Check the seek performance
when DVD-RW disc is used
(Seek between 2 points) x 6 x 2
patterns = Total time
Trouble Symptom
Cause
Repair
+RW Read
Purpose
Check the read performance
when DVD-RW disc is used
RF Jitter (DSP Jitter), BLER,
ADIP Error
Trouble Symptom
Cause
Repair
+RW Write
Purpose
Check the write performance
when DVD-RW disc is used
Wobble Jitter, RF Jitter (DSP
Jitter), BLER
Seek Check
Read/Write
Trouble Symptom
Specification of seek time
Specification of RF Jitter,
BLER, etc.
Cause
Repair
2-axis operation check
Purpose
Trouble Symptom
Cause
MD block
Driver IC
DSP IC
Repair
Additional power output check
Purpose
Read power, Write power
Trouble Symptom
Cause
Check flexible board
OP
RF IC
Repair
6-63
DCR-DVD105
2-8-3.
Power Adjust
Terms
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)
Preset & Power Meter
Purpose
Initialize adjustment data
Power meter Q8230 initialization
Trouble Symptom
Cause
Faulty Flash IC
Faulty connection to power
meter
Repair
Replace the VC board
Check connection to power
meter, Check power supply
Read Power
Purpose
Adjust the read power
Trouble Symptom
Cause
Faulty connection to power
meter
Faulty installation of power
sensor jig
OP
RF IC
Repair
Check connection to power
meter, Check power supply
Check installation of power
sensor jig
Check flexible board, Replace
MD block
Replace IC
R Write Power
Purpose
Adjust the DVD-R write power
Trouble Symptom
Cause
Faulty connection to power
meter
Faulty installation of power
sensor jig
OP
RF IC
DSP IC
Repair
Check connection to power
meter, Check power supply
Check installation of power
sensor jig
Check flexible board, Replace
MD block
Replace IC
Replace IC
R OFF Power
Purpose
Adjust DVD-R OFF power
(cooling power)
Trouble Symptom
Cause
Faulty connection to power
meter
Faulty installation of power
sensor jig
OP
RF IC
DSP IC
Repair
Check connection to power
meter, Check power supply
Check installation of power
sensor jig
Check flexible board, Replace
MD block
Replace IC
Replace IC
RW Erase Power
Purpose
Adjust the erase power of
DVD-RW/DVD+RW
Trouble Symptom
Cause
Faulty connection to power
meter
Faulty installation of power
sensor jig
OP
RF IC
DSP IC
Repair
Check connection to power
meter, Check power supply
Check installation of power
sensor jig
Check flexible board, Replace
MD block
Replace IC
Replace IC
6-64
DCR-DVD105
ANMON & RW Bias Power
Purpose
Adjust the constant for laser
power staring characteristic
when DVD-R writing starts.
Adjust bias power of DVD-RW/
DVD+RW
Trouble Symptom
Cause
Faulty connection to power
meter
Faulty installation of power
sensor jig
OP
RF IC
DSP IC
Repair
Check connection to power
meter, Check power supply
Check installation of power
sensor jig
Check flexible board, Replace
MD block
Replace IC
Replace IC
RW Peak Power
Purpose
Adjust peak power of
DVD-RW/DVD+RW
Trouble Symptom
Cause
Faulty connection to power
meter
Faulty installation of power
sensor jig
OP
RF IC
Repair
Check connection to power
meter, Check power supply
Check installation of power
sensor jig
Check flexible board, Replace
MD block
Replace IC
Shock Sensor
Purpose
Check operation of Shock
sensor
Trouble Symptom
Cause
Faulty sensor
CPU port broken
Repair
6-65
DCR-DVD105
2-8-4.
DVD-R Adjust
Terms
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)
OP Sensitivity
Purpose
Adjust the gain of main beam
to correct the dispersion in OP
sensitivity
Trouble Symptom
Cause
OP
RF IC
Repair
Replace MD block
Replace IC
Offset Adjust
Purpose
Cancel the FE/TE offset that
occurs in OP, RF amplifiers
Trouble Symptom
Cause
RF IC
DSP IC
OP
Driver IC
Repair
Replace IC
Replace IC
Replace MD block
Replace IC
Wobble BPF Center
Purpose
Adjust the RF AMP wobble
BPF center frequency that
causes the dispersion in wobble
delay amount
Trouble Symptom
Cause
RF IC
OP
Repair
Replace IC
Replace MD block
FE Balance
Purpose
Adjust the gain balance between
+ side and - side of PD Focus
Error
Trouble Symptom
Cause
OP
RF IC
DSP IC
Driver IC
Repair
Replace MD block
Replace IC
Replace IC
Replace IC
Write FE Balance
Purpose
Adjust to the FE balanced value
that minimizes the wobble jitter
Trouble Symptom
Cause
OP
RF IC
DSP IC
Repair
Replace MD block
Replace IC
Replace IC
Disc Distinction Threshold
Purpose
Adjust the threshold to
distinguish a disc
Trouble Symptom
OK at all times
Cause
Repair
Servo Adjust
Purpose
Adjust DPP balance, TE
balance, FE gain, and TE gain
Trouble Symptom
Cause
OP
DSP IC
RF IC
Repair
Replace MD block
Replace IC
Replace IC
Jitter & BLER
Purpose
Measure DVD-R self recording
jitter and BLER
Trouble Symptom
Cause
OP
DSP IC
RF IC
Repair
Replace MD block
Replace IC
Replace IC
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