Sony MZ-R91 O O K, E s u m e, E s C l r, Laser Power Check, Main Board Component Side

Ver 1.4 2001. 01

•MO Automatic Adjustment item

Mode No.	Description
112
113	MO electrical offset adjustment
114
118
221	Lower reflection CD tracking error gain adjustment
223	Lower reflection CD tracking error offset adjustment
232
236	Lower reflection CD ABCD level adjustment
244	Lower reflection CD focus gain adjustment
245	Lower reflection CD tracking gain adjustment
121	MO tracking error gain adjustment
122	MO tracking error offset adjustment
134	MO TWPP gain adjustment
131	MO double speed read TWPP offset adjustment
132
136	MO ABCD level 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
436	MO write ABCD level adjustment
445	MO write tracking gain adjustment
411	MO normal speed read TWPP offset adjustment
412
448	32 cluster full recording
141	MO focus bias adjustment

10.If the result of automatic adjustment is OK, the following dis- play appears in the LCD:

LCD display

141 M O O K

11.If the result of automatic adjustment is NG, the following dis- play appears in the LCD:

LCD display

# # # N G

###: Overall adjustment. NG mode number

12.If NG, set the manual mode. Perform automatic adjustment for the items not accepted. (See page 12)

13.To clear the data in overall adjustment mode, set the manual mode and change the mode number 021 (Res NV) to reset the NV. (See page 12)

14.When both CD and MO overall adjustments are OK, set the manual mode and clear the clock data.

For the microprocessor version 1.20 or later, set the mode num- ber 043 (Resume), and press the X key.

LCD display

043R e s u m e

rPress the X key, historical data clear

043R e s C l r

Note: In step 10, set the clock data to 99Y11M11D11H11M00S, and in step 14, do not set the clock.

[Laser Power Check]

Connection :

laser

power meter

Optical pick-up objective lens

digital voltmeter

MAIN board

Both ends of R1005

Check Method :

1.Select the manual mode of test mode, and set the laser power adjusting mode. (mode number 010)

2.Press the . key continuously until the optical pick-up moves to the most inward track.

3.Open the cover and set the laser power meter on the objective lens of the optical pick-up.

4.Press the N key, and set the laser MO read adjustment mode. (mode number 011)

5.Check that the laser power meter reading is 0.81 ± 0.08 mW.

6.Check that the voltage both ends of resitor R1005 at this time is below 44 mV.

7.Press the N key, and set the laser CD read adjustment mode. (mode number 012)

8.Check that the laser power meter reading is 0.97 ± 0.10 mW.

9.Check that the voltage both ends of resitor R1005 at this time is below 44 mV.

10.Press the N key, and set the laser MO write adjustment mode. (mode number 013)

11.Check that the laser power meter reading is 4.95 ± 0.50 mW.

12.Check that the voltage both ends of resister R1005 at this time is below 80 mV.

13.Press the x key.

14.Release the test mode.

Connecting Location:

– MAIN BOARD (Component Side) –

TP914

(VR)

TP915

(VC)

TP5105

(GND)

– MAIN BOARD (Conductor Side) –

R1005

(+) (–)

– 21 – – 22 –