HHB CDR-850 Service Manual page 55

6.4.2 CD-R Record Power Adjustment
Test Point Pickup objective lens
Adjustment Point
Adjustment Value
[Procedure]
(1) Turn VR102 and VR103 completely 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 green.
(4) Press the REC MUTE button. The LED for confirmation of LD emission will light in red. The LD is emitting in this status.
Adjustment of CD-R record power
(5) Turn VR102 clockwise until the adjusted value is 4.60 mW ± 0.1 mW.
Adjustment of CD-R overdrive power
(6) Turn VR103 clockwise until the adjusted value becomes adjustment value at Step 5 above + (0.1 mW ± 0.01 mW).
(7) Press the STOP button to shut off the LD.
6.4.3 CD-RW Record Power Adjustment
Test Point Pickup objective lens
Adjustment Point
Adjustment Value
[Procedure]
(1) Turn VR104, VR105 and VR106 completely 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" appears on the FL display.
(3) Press the RECORD button. The LED for confirmation of LD emission will light in green.
(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 VR104 clockwise until the adjusted value is 0.40 mW ± 0.05 mW.
Adjustment of CD-RW record power
(6) Turn VR106 clockwise until the adjusted value is 2.0 mW ± 0.1 mW. * Serial No. 1-19 (MY Type), 1-27 (KU/CA Type) 2.4 mW ± 0.1 mW
Adjustment of CD-RW erase power
(7) Turn VR105 clockwise until the adjusted value is 5.7 mW ± 0.1 mW. * Serial No. 1-19 (MY Type), 1-27 (KU/CA Type) 5.9 mW ± 0.1 mW
(8) Press the STOP button to shut off the LD.
* CD-RW Record power adjustment value is different according to
the part number used for IC316.
VR102 (R REC. PW1), VR103 (R REC. PW2)
VR102 : 4.60 mW ± 0.1 mW
VR103 : Addition of 0.1 mW ± 0.01 mW to the adjustment value of VR102
VR104 (RW REC. PW0), VR106 (RW REC. PW2), VR105 (RW REC. PW1)
VR104 : 0.40 mW ± 0.05 mW
VR106 : 2.0 mW ± 0.1 mW
VR105 : 5.7 mW ± 0.1 mW
DANGER – LASER RADIATION WHEN OPEN.
AVOID DIRECT EXPOSURE TO BEAM.
DANGER – LASER RADIATION WHEN OPEN.
AVOID DIRECT EXPOSURE TO BEAM.
* Serial No. 1-19 (MY Type), 1-27 (KU/CA Type)
* VR106 : 2.4 mW ± 0.1 mW
* VR105 : 5.9 mW ± 0.1 mW
IC316 PDK033A
VR106 2.4 mW
VR105 5.9 mW
1-19 (MY Type)
Serial No.
1-27 (KU/CA Type)
CDR-850
PDK041A
2.0 mW
5.7 mW
20- (MY Type)
28- (KU/CA Type)
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