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• In this test mode, the causes for retry of the unit during recording can be displayed on the fluorescent display tube.

This is useful for locating the faulty part of the unit.

• The data amount stored in D RAM, number of retries, and retry cause are displayed. Each is displayed in hexadecimal number.
• The display of the D RAM data amount enables data reading, accumulation, ejection, and writing to be performed smoothly. If writing is

not smooth, data may decrease considerably.

Method:
1. Load a recordable disc whose contents can be erased into the unit.
2. Press the EDIT/NO button several times to display “All Erase?” on the fluorescent display tube.
3. Press the YES button.
4. When “All Erase??” is displayed on the fluorescent display tube, the numbers on the music calendar will start blinking.
5. Press the YES button to display “Complete”, and press the 

p button immediately and continue pressing for about 10 seconds.

6. When the “TOC” displayed on the fluorescent display tube goes off, release the 

p button.

7. Press the 

r REC button to start recording.

8. Press the DISPLAY button to display the test mode (Fig. 1), and check the display.
9. The Rt value increases with each retry. If an error occurs after a retry, “Retry Error” will be displayed, and the number of retries counted

will be set back to 0.

10. To exit the test mode, press the POWER button. Turn OFF the power, and after “TOC” disappears, disconnect the power plug from the

outlet.

SC @@

Rt # #

∗

 

∗

@@ : Displays the DRAM memory amount when at all times.
# #

: Displays the number of retries. When a retry error occurs, the number will be set back to 0.

* *

: Cause of retry

All three displays above are in hexadecimal numbers.

— 6 —

Reading the Retry Cause Display

Hexadecimal

Bit

Binary

Higher Bits

Lower Bits

8

4

2

1

8

4

2

1

b7 b6 b5 b4 b3 b2 b1 b0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

1

0

0

0

0

0

0

0

When spindle rotation is detected as slow

When more than 3.5 shocks are detected

When ADER was counted more than

five times continuously

When ADIP address is not continuous

(Not used)

When not in focus

When ABCD signal level exceeds the specified range

When CLV is unlocked

When access operation is not performed normally

Hexa-

decimal

Spindle is slow

shock *1

ader5

Discontinuous address

(Not used)

FCS incorrect

IVR rec error

CLV unlock

Access fault

Cause of Retry

Occurring conditions

00

01

02

04

08

10

20

40

80

*1 Some displays are not used depending on the microprocessor version.

Reading the Display:
Convert the hexadecimal display into binary display. If more than two causes, they will be added.

Example
When 42 is displayed:
Higher bit : 4 = 0100 

n b6

Lower bit : 2 = 0010 

n b1

In this case, the retry cause is combined of “CLV unlock” and “ader5”.

When A2 is displayed:
Higher bit : A = 1010 

n b7+b5

Lower bit : 2 = 0010 

n b1

The retry cause in this case is combined of “access fault”, “IVR rec error”, and “ader5”.

n

Hexadecimal

Binary

Hexadecimal

Binary

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

0000

0001

0010

0011

0100

0101

0110

0111

1000

1001

1010

1011

1100

1101

1110

1111

— 7 —

1

2

3

4

5

6

7

8 9

1 POWER switch
2 TIMER switch
3 Disc compartment
4 § button

5 ·P button

6 p button

7 r button

8 EDIT/NO button
9 YES button
!º AMS knob

!¡ INPUT switch
!™ Remote sensor
!£ REC LEVEL knob
!¢ SCROLL/CLOCK SET  button
!∞ DISPLAY/CHAR button
!§ 0/) buttons

!¶ Display window
!• PHONES LEVEL knob
!ª PHONES jack

0

!¡

!™

!£

!¢

!∞

!§

!¶

!ª

!•

— 8 —

This section is extracted from
instruction manual.