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MZ-R701/R701DPC

5-6. Temperature Correction

• Adjustment method of temperature correction

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

ber 014 (see page 13).

This set LCD display

SetTmp

: Adjusted value

2. Measure the ambient temperature.

[VOL +]

[VOL --]

3. Adjust with

(hexadecimal value) becomes the ambient temperature.

(Initial value: 14h = 20 °C, Adjusting range: 80h to 7fh (–128

°C to +127 °C)

4. Press the

key to write the adjusted value.

5-7. Laser Power Check

Connection :

Optical pick-up

objective lens

MAIN board

TP (+)

TP (–)

Checking Method :

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

laser power adjusting mode (item number 010).

This set LCD display

Laser

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

key, and set the laser MO read adjustment mode

(item number 011).

This set LCD display

LrefPw

: Adjusted value

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 resis-

tor R521 at this time is below 44 mV.

0 14

key so that the adjusted value

laser

power meter

digital

voltmeter

0 10

0 11

7. Press the

key, and set the laser CD read adjustment

mode (item number 012).

This set LCD display

HrefPw

: Adjusted value

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 resis-

tor R521 at this time is below 44 mV.

10. Press the

key, and set the laser MO write adjustment mode

(item number 013).

This set LCD display

WritPw

: Adjusted value

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 resis-

tor R521 at this time is below 80 mV.

13. Press the

key to quit the manual mode, and activate the

test mode (display check mode).

Adjustment/checking and Connection Location:

–MAIN BOARD (SIDE A)–

TP902 (VL)

TP901 (VC)

TP912 (GND)

0 12

0 13

R521

TP (+)

TP (–)