53
PDR-509
6.4 ADJUSTMENT 1 (LASER DIODE POWER ADJUSTMENT)
[Procedure]
(1) Check that "CD" is displayed on the FL display. If "CD-R" or "CD-RW" is displayed, press the STOP button repeatedly until "CD" is
displayed.
(2) Press the RECORD button.
(3) Press the REC MUTE button. The LED for confirmation of LD emission will light in red. The LD is emitting in this status.
(4) Turn VR101 clockwise until the adjustment value to be reached is obtained.
(5) Press the STOP button to shut off the LD.
6.4.1 Playback Power Adjustment
Pickup objective lens
Test Point
Adjustment Point
Adjustment Value
VR101 (PB. PW)
0.60 mW
±
0.05 mW
Fig. 4 Adjustment points
Playback power
Playback
CD-R recording
CD-R overdrive
CD-R record
power
CD-RW record power
CD-RW bias
power
CD-RW recording
Fig.5 Output power of the laser diode
CD-RW erase
power
Note 1 : Attach the remote sensor of the laser power meter to a
point angled away about 10 degrees against the pickup
lens and where the maximum power is detected, so that
there will be no light reflected onto the pickup.
Note 2 : When adjusting with VRs, first turn them completely
counter-clockwise and then adjust clockwise, so that the
value to be reached is not exceeded.
The following adjustments 1 through 3 must be done with the Input
Selector set to the Analog position (LD power adjustment mode).
CN102
VR101
PB. PW
VR164
RW ERASE
VR163
R REC
VR141
RW BIAS
VR162
R O.D.
VR161
RW REC
1
1 : RF
2 : VC
3 : MPP
4 : TE
5 : VC
6 : FE
6
CD-R CORE ASSY
DANGER – LASER RADIATION WHEN OPEN.
AVOID DIRECT EXPOSURE TO BEAM.
Summary of Contents for PDR-509
Page 19: ...PDR 509 19 A B C D 5 6 7 8 5 6 7 8 CDR SERVO AMP MULTI PLEXER A1 5 A4 5 A3 5 A1 5 1 3 5 A ...
Page 43: ...PDR 509 43 A B C D 5 6 7 8 5 6 7 8 PNP1466 A Q701 Q704 PNP1466 A CN51 J SIDE A SIDE B I ...
Page 45: ...PDR 509 45 A B C D 1 2 3 4 1 2 3 4 J K PNP1466 A POWER SUPPLY ASSY J REG ASSY K SIDE B ...
Page 68: ...68 PDR 509 FL TUBE 7 2 2 DISPLAY PEL1099 FUNCTION ASSY V701 Anode Grid Assignment 1 35 ...
Page 69: ...69 PDR 509 Pin Assignment ...
Page 73: ...73 PDR 509 MONITOR DIGITAL REC LEVEL ANALOG REC LEVEL INPUT SELECTOR TIME REPEAT ...