Sony MZ-R700 User Manual

20

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

(item number 011).

5. Check that the laser power meter reading is 0.81 ± 0.08 mW.
6. Check that the voltage both ends (TP (+) and TP (–)) of resistor

R521 at this time is below 44 mV.

7. Press the

N

key, and set the laser CD read adjustment

mode (item number 012).

8. Check that the laser power meter reading is 0.97 ± 0.10 mW.
9. Check that the voltage both ends (TP (+) and TP (–)) of resistor

R521 at this time is below 44 mV.

10. Press the

N

key, and set the laser MO write adjustment mode

(item number 013).

11. Check that the laser power meter reading is 4.95 ± 0.50 mW.
12. Check that the voltage both ends (TP (+) and TP (–)) of resistor

R521 at this time is below 80 mV.

13. Press the

x

key to quit the manual mode, and activate the

test mode (display check mode).

Checking and Connection Location: MAIN board

1. Connect a digital voltmeter to the TP902 (VL) on the MAIN

board, and adjust 

[VOL +]

 key (voltage up) or 

[VOL --]

 key

(voltage down) so that the voltage becomes 2.30 ± 0.01 V.

2. When press the

X

key to write the adjusted value, LCD dis-

plays as follows and power supply manual adjustment has com-
pleted.

Adjustment and Connection Location: MAIN board

1. Select the manual mode of test mode, and set the mode num-

ber 014 (see page 13).

2. Measure the ambient temperature.
3. Adjust with 

[VOL +]

, 

[VOL --]

 key so that the adjusted value

(hexadecimal value) becomes the ambient temperature.
(Initial value: 14h = 20 

°

C, Adjusting range: 80h to 7fh (–128

°

C to +127 

°

C)

4. Press the

X

key to write the adjusted value.

Checking Method :
1. Select the manual mode of test mode (see page 13), and set the

laser power adjusting mode (item number 010).

0 00

ADJ OK

0 14

SetTmp

0 10

Laser

0 11

LrefPw

0 12

HrefPw

0 13

WritPw