MZ-R900

Adjustment Method of Overall CD and MO Adjustment Mode

1.Setting the test mode (see page 12).

2.Press the . or [VOL --]key activates the overall adjust- ment mode.

Remote commander LCD display

000 Assy11

3.Insert CD disc in the set, and press the . key to set the Overall CD Adjustment mode. Automatic adjustments are made.

Remote commander LCD display

XXXCD RUN

XXX: Item number for which an adjustment is being executed.

4.In case of CD overall adjustment NG, reset the NV (see page 17), then readjust from the temperature correction (see page 19).

Remote commander LCD display

000 *** NG

***: NG item number.

5.If OK through the overall CD adjustments, then perform over- all MO adjustments.

Remote commander LCD display

000 CD OK

6.Insert MO disc in the set, and press the > key to set the Overall MO Adjustment mode. Automatic adjustments are made.

Remote commander LCD display

XXXMO RUN

XXX: Item number for which an adjustment is being executed.

7.In case of MO overall adjustment NG, reset the NV (see page 17), then readjust from the temperature correction (see page 19).

Remote commander LCD display

000 *** NG

***: NG item number.

8.If OK through the overall MO adjustments, press the x key to return to the test mode and terminate the Overall Adjustment mode.

Remote commander LCD display

000 MO OK

Overall CD and MO adjustment items

1. Overall CD adjustment items

Item No.

Description

 

 

312

 

313

CD electrical offset adjustment

314

 

 

 

321

CD tracking error gain adjustment

 

 

328

CD TWPP gain adjustment

 

 

324

CD tracking error offset adjustment

332

 

 

 

336

CD ABCD gain adjustment

 

 

344

CD focus gain adjustment

 

 

345

CD tracking gain adjustment

 

 

521

CD two-axis sensitivity adjustment

522

 

 

 

2. Overall MO adjustment items

Item No.

Description

 

 

112

 

113

MO electrical offset adjustment

114

 

118

 

 

 

221

Low reflective CD tracking error gain adjustment

 

 

224

Low reflective CD tracking error offset adjustment

232

 

 

 

236

Low reflective CD ABCD level adjustment

 

 

244

Low reflective CD focus gain adjustment

 

 

245

Low reflective CD tracking gain adjustment

 

 

121

MO tracking error gain adjustment

 

 

122

MO TON offset adjustment

 

 

134

MO TWPP gain adjustment

 

 

131

MO double speed read TWPP offset adjustment

132

 

 

 

136

MO ABCD gain adjustment

 

 

144

MO focus gain adjustment

 

 

145

MO tracking gain adjustment

 

 

138

MO RF gain adjustment

 

 

434

MO write TWPP gain adjustment

 

 

431

MO write TWPP offset adjustment

 

 

432

MO tracking error offset adjustment

 

 

436

MO write ABCD gain adjustment

 

 

445

MO write tracking gain adjustment

 

 

411

MO normal speed read TWPP offset adjustment

 

 

412

MO tracking error offset adjustment

 

 

448

20 sec full recording

 

 

21

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Sony MZ-R900 service manual 000 *** NG, Cd Ok, Mo Ok, Adjustment Method of Overall CD and MO Adjustment Mode