Sony RCD-W3 Service Manual

16
RCD-W3
Laser Power Adjustment (CD-R Only)
In case of the following parts are replaced, this adjustment is required.
1. CD-R optical pick-up block (KRS-220C)
2. IC208 (EP- ROM)
Specification of Dragon Program Usage Environment
The Dragon Program programmed by API function of Windows 95 can be surely operated on the Windows 95/98 platform.
It isn’t guaranteed on the other platform.
Start up
Procedure:
1. Connect the PC connection jig with the RS-232C cable between the test connector (PN105) on CD-R of RCD-W3 and COM port on
PC.(Check SW501 on the PC connection jig to “D” side.)
2. Turn power on RCD-W3.
3. Execute Dragon_dv810_svc.exe on Windows.
(Two files Dragon_dv810_svc.exe and Dragon_dv810.cfg are displayed on the setup menu window.)
4. Select “Setup I/F” on “Setup” pull-down menu, then “Select I/F Method” window is open.
5. Select Com Port matching to the Com Port connected the PC connection jig.
6. Select “38400” of “Select Transfer Rate”.
7. Click OK.
Fig 1 : Dragon menu and setup menu windows
Fig 2 : Select I/F method window
LD Power Adjustment
Jigs used on this adjustment
• LD Power Meter
A laser power meter 10mW or more measurable is required. Don’t use the laser power meter for Mini disc because of 10mW max.
Optical power meter (TQ8210): Product of ADVANTEST (on the market).
A thin type optical sensor (Q82017A): Product of ADVANTEST (on the market).
• PC Connection Jig (J-2501-210-A)
• Test Program FD
Dragon program Tool DV810 Ver. 0.9A
(This test program is distributed with the service manual.)
• PC (Windows 95/98)
• RS-232C Cable (on the market) D-SUB 9 pin, straight type
• Test Disc for Operation Check
A low reflecting rate disc for checking playback performance. OK: It can be played back.
• Low reflecting CD-R disc: TCD-R082LMT (J-2502-063-1)
• Low reflecting CD-RW disc: TCD-W082L (J-2502-063 -2)
• CD test disc (YEDS-18) (3-702-101-01)
• Extension cable (4p, 1.0mm) (J-8000-023-A)
SECTION 4
ELECTRICAL ADJUSTMENT

Sony RCD-W3 Specifications

Power

power requirements	U.S.A. and Canada 120 V AC, 60 Hz
power requirements other countries	110 – 240 V AC, 50/60 Hz
power consumption	20 W

Audio Specifications

frequency response	20 Hz – 20, 000 Hz (±0.5 dB)
signal-to-noise ratio	More than 100 dB
dynamic range	More than 95 dB

Inputs

analog in impedance	47 kilohms
rated input	330 mVrms
minimum input	125 mVrms

Outputs

analog out rated output	2 Vrms (at 50 kilohms)
load impedance	over 10 kilohms
phones	28 mW, 32 ohms

Weight and Dimensions

dimensions	430 × 108 × 368 mm
mass	4.6 kg