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26

Display items

Description

Remarks

Error name

tRefer to the error display list

IN SW

Sled in switch state when an error occurred
0: switch off    Not limit in
1: switch on    Limit in (Optical pick-up is at most inward track)

FOK

FOK signal state when an error occurred
FOK signal    Is focus on?
0: FOK L (Focus off), 1: FOK H (Focus on)

LOCK

LOCK signal state when an error occurred.
LOCK signal    Is PLL lock?
0: LOCK L    Not lock, 1: LOCK H    Lock

From

Displayed if effective in the error item

Disc PSN (relative address) is

tRefer to the error display list

displayed in case of access error

To

Displayed if effective in the error item

Disc PSN (relative address) is

tRefer to the error display list

displayed in case of access error

Error display

Error description

Main causes of errors

DISC DETECT ERROR

Disc type error

Optical pick-up, RF amplifier or CD

MIRR measured time is displayed in From:

DSP IC is faulty

OFFSET ADJUST ERROR

Offset adjustment error

Optical pick-up, RF amplifier or CD
DSP IC is faulty

FCS SRV ON ERROR

Focus servo error

From:1 means focus search failed

An error code is displayed in From:

From:2 means defocusing

CLV SRV ON ERROR

CLV servo error

Defocusing

E-F BALANCE ERROR

E-F  balance adjustment error

Defocusing

TRK SRV ON ERROR

Tracking servo error

Tracking servo on time out
Optical pick-up, RF amplifier or CD
DSP IC is faulty

SLD SRV ON ERROR

Sled servo error

Sled servo on time out

FOCUS BIAS ERROR

Focus bias adjustment failed

Defocusing during adjustment

An error code is displayed in From:

Description of display
An error code is displayed in From
From:1 means retry failed 3 times
From:2 means abnormal value
Optical pick-up, RF amplifier or CD
DSP IC is faulty

FCS AGC ERROR

Error at focus gain automatic adjustment

Defocusing during adjustment
Optical pick-up, RF amplifier or CD
DSP IC is faulty

TRK AGC ERROR

Error at tracking gain automatic adjustment

Defocusing during adjustment
Optical pick-up, RF amplifier or CD
DSP IC is faulty

ACCESS 1TJ ERROR

Access    Error at one-track jump

Access failed

Effective addresses (PSN) are displayed in From: and To:

Defocusing at access, etc

ACCESS FINE ERROR

Access    Error at fine search

Access failed

Effective addresses (PSN) are displayed in From: and To:

Defocusing at access, etc

ACCESS MOVE ERROR

Access    Error at M-track MOVE

Access failed

Effective addresses (PSN) are displayed in From: and To:

Defocusing at access, etc

WHILE PLAYING ERROR

Error during disc playing

Defocusing
Focusing retry failed

FCS JUMP ERROR

Time out error at focus jump

Defocusing
Focusing retry failed

System errors are as follows.

This error is not saved in the set.

Display

Description

Toc Error *

Error during the time from auto adjustment to TOC reading, Different type of disc (Such as a DVD disc), Disc is dirty

Toc Error ****

Illegal SACD (Such as a pirated version)

Read Error

Music data read error (Error during disc playing)

Error display is as follows.
Error name, Disc type, IN SW (Sled in switch state), FOK (FOK signal state), LOCK (LOCK signal state), From (Displayed if effective),
To (Displayed if effective), Aging times (Displayed in aging mode only)
Display example
ACCESS MOVE ERROR : SACDSL : IN SW 1 FOK 0 LOCK 0 : FROM 205663 : TO 2461601 : TIMES 5
 (Error name) (Disc type) (Sled in switch, FOK, LOCK signal state) (Relative address) (Relative address)(Aging times)

27

Checking Method:
1. Under the condition of S curve waveform check mode in step

5, press the 

[        AMS        ]

 dial.

2. After “WAIT” is displayed, the traverse waveform check mode

will become active and “TRAVERSE MODE” will be dis-
played.

3. Connect an oscilloscope to the TP513 (TE) and TP504 (AVC)

on the MAIN board.

4. Check that the level A and B of waveform on the oscillo-

scope satisfy the specification.

Disc

A

B

SATD-S5 or

0.6 to 1.6 Vp-p

SATD-S4

PATD-012 or

0.5 to 1.3 Vp-p

–0.1 to +0.1V

YEDS-18

This set performs automatic adjustment for each disc, and there-
fore the set need not be adjusted when parts are replaced, but it
requires checking following the description in this section, 5-1.
IC AND FLUORESCENT DISPLAY TUBE CHECK and 5-2.
AUTO CHECK.
For the check, the test mode is used. Wrong setting causes a trouble,
thus requiring extreme care.

The BU electrical adjustment mode is used to check the S curve
waveform, traverse waveform and RF waveform. After a disc is
placed on the tray, each time the 

[        AMS        ]

 dial is pressed,

the check mode is switched in order for S curve waveform

t

traverse waveform

tRF waveform.

Setting Method:
After setting the test mode, rotate the 

[        AMS        ]

 dial to select

“9C BU DENCHO” and press the 

[        AMS        ]

 dial to enter.

“BU MEASURE” will be displayed if the BU electrical adjust-
ment mode becomes active.

Checking Method:
1. After setting the BU electrical adjustment, place the test disc

(PATD-012 or SATD-S5 or SATD-S4) on the tray and close
the tray, then press the 

[        AMS        ]

 dial.

2. At the completion of disc type check, “CD DETECT” will be

displayed (for PATD-012 or YEDS-18).

 For the  SATD-S5 or SATD-S4, “SACD DETECT“ is displayed.

3. Press again the 

[        AMS        ]

 dial, and the S curve waveform

check mode will become active and “S-CURVE MODE” will
be displayed.

4. Connect an oscilloscope to the TP506 (FE) and TP504 (AVC)

on the MAIN board.

5. Check that the level A and B of waveform on the oscilloscope

satisfy the specification.

Disc

A

B

SATD-S5 or

SATD-S4

PATD-012 or

0.7 to 1.7 Vp-p

–0.1 to +0.1V

YEDS-18

For easier observation of this waveform, extend the sweep time
and raise the brightness.

A

B

A

B

l

L

l

L

l

L

l

L

l

L

l

L

28

Checking Method:
1. Set the test mode.
2. Connect an oscilloscope to the TP516 (RFCK) (CH1), TP517

(WFCK) (CH2) and TP808 (DG) (GND) on the MAIN board.

3. Place the test disc PATD-012 or YEDS-18 on the tray, and

close the tray.

4. Rotate the 

[        AMS        ]

 dial to select “61 DISC DETECT”,

and press the 

[        AMS        ]

 dial to enter. Then, the disc type

will be judged.

5. Check that the disc type has been judged.

(For the PATD-012, “DSKMOD CD” will be displayed. Refer
to the test mode, DISC DETECT command (page 16))

6. Rotate the 

[        AMS        ]

 dial to select “86 ALL SRV ON”,

and press the 

[        AMS        ]

 dial. Then, the disc will rotate,

automatic adjustment will be carried out, and all servos will
be turned on.

7. Rotate the 

[        AMS        ]

 dial to select “07 DSP MON3”, and

press the 

[        AMS        ]

 dial to enter.

8. Check that the value A of waveform on the oscilloscope sat-

isfies the specification.

9. Rotate the 

[        AMS        ]

 dial to select “19 ALL SRV OFF”,

and press the 

[        AMS        ]

 dial. Then, all servos will be

turned off and the disc rotation will stop.

10. Press the 

[    OPEN/CLOSE]

 button to open the tray, and re-

move the test disc.

11. Press the 

[POWER]

 button to turn the power off.

 Take care not to leave the test disc in the set.

Disc

A

PATD-012 or

35 

µ

sec or less

YEDS-18

Checking Method:
1. Under the condition of traverse waveform check mode in step

4, press the 

[        AMS        ]

 dial.

2. Connect an oscilloscope to the TP703 (RFAC) and TP704

(AGND) on the MAIN board.

3. After “WAIT” is displayed, the RF waveform check mode will

become active and “PLAY 5th TRACK” will be displayed,
and the 5th music on the disc will be played.

4. Check that the RF waveform is clear and the level satisfies the

specification.

5. Press the 

[        AMS        ]

 dial, and “OUTSIDE TRACK” will be

displayed and the outward track of the disc will be played.

6. Check that the RF waveform is clear and the level satisfies the

specification.

7. Press the 

[        AMS        ]

 dial, and “INSIDE TRACK” will be

displayed and the inward track of the disc will be played.

8. Check that the RF waveform is clear and the level satisfies the

specification.

9. After checking, press the 

[        AMS        ]

 dial, and the test is

over when “BU MEASURE” is displayed.

10. Press the 

[    OPEN/CLOSE]

 button to open the tray, and re-

move the test disc.

11. Using each type of disc, repeat from step 1 of S curve wave-

form check up to step 10 of RF level check.

12. When the check is over, press the 

[POWER]

 button to turn the

power off.

 Take care not to leave the test disc in the set.

Disc

A

SATD-S5 or

0.65 to 1.1 Vp-p

SATD-S4

PATD-012 or

0.45 to 0.95 Vp-p

YEDS-18

 Clear RF waveform refers to the waveform where 

◊

 shapes should

be distinctively observed in the center.

A

A

l

L

l

L

l

L

l

L

l

L

l

L

l

L

l

L

l

L

l

L

l

L

l

L

A

A

29

29

TP506

(FE)

TP513

(TE)

TP516

(RFCK)

TP704

(AGND)

TP703

(RFAC)

TP808

(DG)

TP517

(WFCK)

TP504

(AVC)

IC509

IC701

IC801

IC703