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— 17 —

Adjusting Method :
1. Load a continuously recorded disc (Refer to “4-4. Creating MO

Continuously Recorded Disc”.).

2. Rotate the SELECTOR knob and display “CPLAY MODE”.
3. Press the YES button twice and display “CPLAY MID”.
4. Press the NO button when “C1 = 

 AD = 

” is displayed.

5. Rotate the SELECTOR knob and display “FBIAS ADJUST”.
6. Press the YES button and display “ 

/

 a = 

”.

The first four digits indicate the C1 error rate, the two digits after
[/] indicate ADER, and the 2 digits after [a =] indicate the focus
bias value.

7. Rotate the SELECTOR knob in the clockwise direction and find

the focus bias value at which the C1 error rate becomes 220.

8. Press the YES button and display “ 

/

 b = 

”.

9. Rotate the SELECTOR knob in the counterclockwise direction

and find the focus bias value at which the C1 error rate becomes
220.

10. Press the YES button and display “ 

/

 c = 

”.

11. Check that the C1 error rate is below 50 and ADER is 00. Then

press the YES button.

12. If the “(

)” in “

 - 

 - 

 (

)” is above 20, press the YES

button.
If below 20, press the NO button and repeat the adjustment from
step 2 again.

13. Press the NO button and press the EJECT button to remove the

continuously recorded disc.

Note 1 : The relation between the C1 error and focus bias is as

shown in the following figure. Find points a and b in the
following figure using the above adjustment. The focal point
position C is automatically calculated from points a and b.

Note 2 : As the C1 error rate changes, perform the adjustment using

the average vale.

Checking Method :
1. Load a test disc TDYS-1.
2. Rotate the SELECTOR knob and display “CPLAY MODE”.
3. Press the YES button twice and display “CPLAY MID”.
4. “C1 = 

 AD = 

” is displayed.

5. Check that the C1 error rate is below 20.
6. Press the NO button, stop playback, press the EJECT button, and

remove the test disc.

Checking Method :
1. Load a continuously recorded disc (Refer to “4-4. Creating MO

Continuously Recorded Disc”.).

2. Rotate the SELECTOR knob and display “CPLAY MODE”.
3. Press the YES button twice and display “CPLAY MID”.
4. “C1 = 

 AD = 

” is displayed.

5. If the C1 error rate is below 50, check that ADER is 00.
6. Press the NO button, stop playback, press the EJECT button, and

remove the continuously recorded disc.

Change the focus bias and check the focus tolerance amount.
Checking Method :
1. Load a continuously recorded disc (Refer to “4-4. Creating MO

Continuously Recorded Disc”.).

2. Rotate the SELECTOR knob and display “CPLAY MODE”.
3. Press the YES button twice and display “CPLAY MID”.
4. Press the NO button when “C1 = 

 AD = 

” is displayed.

5. Rotate the SELECTOR knob and display “FBIAS CHECK”.
6. Press the YES button and display “ 

/

 c = 

”.

The first four digits indicate the C1 error rate, the two digits after
[/] indicate ADER, and the 2 digits after [c =] indicate the focus
bias value.
Check that the C1 error is below 50 and ADER is 00.

7. Press the YES button and display “ 

/

 b = 

”.

Check that the C1 error is not below 220 and ADER is not
above 00 every time.

8. Press the YES button and display “ 

/

 a = 

”.

Check that the C1 error is not below 220 and ADER is not above
00 every time.

9. Press the NO button, next press the EJECT button, and remove

the continuously recorded disc.

Note 1 : If the C1 error and ADER are above 00 at points a or b, the

focus bias adjustment may not have been carried out
properly. Adjust perform the beginning again.

C1 error

220

b

c

a

Focus bias value
(F. BIAS)

— 18 —

D101

(IOP)

(I + 5V)

RV101

(VC)

IC101

IC171

RV102

(TEO)

IC191

IC121

— 19 —

BD board

PANEL board

DIGITAL board

POWER board

DETECTION SW board

MOTOR board

— 49 —

I/O

Function

Pin No.

Pin Name

1

2 to 7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47, 48

VC

A to F

FI

FO

PD

APCREF

TEMPI

GND

AAPC

DAPC

TEMPR

XRST

SWDT

SCLK

XLAT

VREF

TENV

THLD

VCC

TFIL

TE

TLB

CSLED

SE

ADFM

ADIN

ADAGC

ADFG

AUX

FE

FLB

ABCD

BOTM

PEAK

RFAGC

RF

ISET

AGCT

RFO

MORFI

MORFO

I, J

O

I

I

O

I

I

I

—

O

O

O

I

I

I

I

O

O

I

—

I

O

I

I

O

O

I

I

O

O

O

I

O

O

O

I

O

I

I

O

I

O

I

Middle point voltage (2.5V) generation output pin

Input of signal from optical block detector

F operation amplifier input

F operation amplifier output

Front monitor. Connected to photo diode

Input pin for setting laser power

Temperature sensor connection pin

Ground pin

APC LD amplifier output pin

Not used (Opened)

Temperature sensor reference voltage output pin

Input of reset signal from system controller (IC201). Reset: “L”

Input of write data signal from system controller (IC201)

Input of clock signal from system controller (IC201)

Input of latch signal from system controller (IC201)

Reference voltage output. Not used in this unit (Opened)

Not used (Opened)

Not used (Connected to VC)

Power supply pin (+5V)

Not used (Opened)

Output of tracking error signal to CXD2535BR (IC121)

Input pin of add signal to tracking error

Sled error LPF pin

Output of sled error signal to CXD2535BR (IC121)

ADIP FM signal output

Inputs ADIP FM signal by AC coupling

Connection pin of external capacitor for ADIP AGC

Output of ADIP dual FM signal to CXD2535BR (IC121) (22.05 kHz 

±

 1 kHz)

Output of auxiliary signal to CXD2535BR (IC121)

Output of focus error signal to CXD2535BR (IC121)

Not used (Opened)

Output of light amount signal to CXD2535BR (IC121)

Output of bottom hold signal of light amount signal to CXD2535BR (IC121)

Output of peak hold signal of light amount signal to CXD2535BR (IC121)

Connection pin of RF AGC circuit external capacitor

Output of playback EFM RF signal to CXD2535BR (IC121)

Internal circuit constant setting pin. 22 kHz BPF center frequency (Fixed at “H”)

Inputs RF signal by AC coupling

Output pin of RF signal

Inputs MO RF signal by AC coupling

Output pin of MO RF signal

Input of signal from optical block detector