Sony R500PC User Manual

20

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).

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. Press the 

[ENTER]

 key and set the address & adjusted value

display (See page 14).

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

tor R501 at this time is below 44 mV.

2. Connect a digital voltmeter to the TP902 (VC) on the MAIN

board, and adjust 

[VOL +]

 key (voltage up) or 

[VOL --]

 key

(voltage down) so that the voltage becomes 2.75 ± 0.01 V.

3. Press the

X

key to write the adjusted value.

(The item number changes to 764 when

X

key is pressed)

Adjustment and Connection Location: MAIN board

(see page 21)

1. Press the 

[ENTER]

 key and change the LCD display.

2. Connect a digital voltmeter to the TP901 (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.

3. 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.

   7 6 4

V1 PWM

   7 6 4

 AD

   0 0 0

ADJ OK

   0 1 4

SetTmp

14

   0 1 4

S14

   0 1 0

Laser

   0 1 1

LrefPw

   0 1 1

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