DVR-104
41
5
7
8
5
7
8
C
D
F
A
B
E
[Write Power High Adjustment]
"0AW"
Adjust with UP/DN command so that the indication of light power meter becomes 10.19
±
0.1mW.
"EE" (Store the adjustment value in the nonvolatile memory)
[
Erase Power Low Adjustment]
"3AW"
Adjust with UP/DN command so that the indication of light power meter becomes 3.74
±
0.1mW.
"EE" (Store the adjustment value in the nonvolatile memory)
[Erase Power High Adjustment]
"2AW"
Adjust with UP/DN command so that the indication of light power meter becomes 6.97
±
0.1mW.
"EE" (Store the adjustment value in the nonvolatile memory)
About the following adjustment items, a microcomputer performs automatic adjustment.
[Write Power Low PD Gain Adjustment]
[Write Power High PD Gain Adjustment]
[Erase Power Low PD Gain Adjustment]
[Erase Power High PD Gain Adjustment]
[Procedure]
"0DT" (Selects CD-ROM mode)
Adjust VR2 so that the indication of light power meter becomes 1.44
±
0.03mW.
0.06mW, there is not a problem.
(2) CD Power Adjustment
• Set the wavelength of the light power meter to 780 nm, and shine the sensor to the objective lens.
(2.1) Playback Power Adjustment
Shine the light emitted from the objective
lens on the light power meter sensor.
Wavelength 780nm Ave. mode
Wavelength 780nm,
1.44
±
0.03mW (Ave.)
Player state
STOP
Adjustment
VR2
location
Disc
None needed
Measurement Instru-
ment connections
Adjustment standard
value
Objective
Symptom when out
of adjustment
To optimize the playback power of laser diode (LD).
When a gap is terrible : Player does not playback, track search is impossible
When a gap is light : RF waveform is dirty.
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