Fostex CR300 Service Manual page 15

3-4-2. CD-R Record Power Adjustment
Test Point Pickup objective lens
Adjustment Point
VR102 (R REC. PW1), VR103 (R REC. PW2)
VR102: 4.60 mW ± 0.1 mW
Adjustment Value
VR103: Addition of 0.1 mW ± 0.01 mW to the adjustment value of VR102
[Procedure]
(1) Turn VR102 and VR103 fully counterclockwise to set their power output to minimum.
(2) Press the ERASE button once so that "CD-R" appears on the FL display. If the indication is "CD" or "CD-RW",
press the ERASE button repeatedly until "CD-R" is displayed on the FL display.
(3) Press the RECORD button. The LED for confirmation of LD emission will light in orange.
(4) Press the REC MUTE button. The LED for confirmation of LD emission will light in red. The LD is emitting in this
status.
CD-R record power adjustment
(5) Turn VR102 clockwise until the adjusted value is 4.60 mW ± 0.1 mW.
CD-RW overdrive power adjustment
(6) Turn VR103 clockwise until the adjusted value becomes adjusted value at Step 5 above + (0.1 mW ± 0.01 mW).
(7) Press the STOP button to shut off the LD.
3-4-3. CD-RW Record Power Adjustment
Test Point
Pickup objective lens
Adjustment Point
VR104 (RW REC. PW0), VR106 (RW REC. PW2), VR105 (RW REC. PW1)
VR104: 0.40 mW ± 0.05 mW
Adjustment Value
VR106: 2.40 mW ± 0.1 mW
VR105: 5.90 mW ± 0.1 mW
[Procedure]
(1) Turn VR104, VR105 and VR106 fully counterclockwise to set their power output to minimum.
(2) Press the ERASE button twice so that "CD-RW" appears on the FL display. If the indication is "CD" or "CD-R",
press the ERASE button repeatedly until "CD-RW" is displayed on the FL display.
(3) Press the RECORD button. The LED for confirmation of LD emission will light in orange.
(4) Press the REC MUTE button. The LED for confirmation of LD emission will light in red. The LD is emitting in this
status.
(5) Turn the VR104 clockwise until the adjusted value is 0.40 mW ± 0.05 mW.
CD-RW record power adjustment
(6) Turn VR106 clockwise until the adjusted value is 2.40 mW ± 0.1 mW.
CD-RW erase power adjustment
(7) Turn VR105 clockwise until the adjusted value is 5.90 mW ± 0.1 mW.
(8) Press the STOP button to shut off the LD.
DANGER - LASER RADIATION WHEN OPEN.
AVOID DIRECT EXPOSURE TO BEAM.
DANGER - LASER RADIATION WHEN OPEN.
AVOID DIRECT EXPOSURE TO BEAM.
CR300
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