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21

This mode is used to check operations of microprocessor.
Procedure:

1. Press the

I

/1

button to turn the power on.

2. Press three buttons of

x

, [PLAY MODE/TUNING MODE] and

[DISC 3] simultane-ously.

3. When the MC test mode is activated, VACS level is displayed

on the fluorescent indicator tube momentarily.

4. Turn the [         -- EQ +          ] knob clockwise, the message “ALL

EQ MAX” is displayed on the fluorescent indicator tube
momentarily and turn the [        -- EQ +         ] knob counterclock-
wise, the message “ALL EQ MIN” is displayed on the
fluorescent indicator tube momentarily.

5. Press the [PRESET EQ] button, the message “ALL EQ FLAT”

is displayed on the fluorescent indicator tube momentarily.

6. Turn the [VOLUME] knob clockwise, the message “VOLUME

MAX” is displayed on the fluorescent indicator tube
momentarily and turn the [VOLUME] knob counterclockwise,
the message “VOLUME MIN” is displayed on the fluorescent
indicator tube momentarily.

7. Press the [GROOVE] button to changed over VACS on/off.
8. When the [REC PAUSE/START] button is pressed twice with a

tape set in the deck-B, the function is switched “MD” or
“VIDEO” and recording starts. When the  

m

  or  

M

  button

is pressed during recording, the tape is rewound back to the
beginning of recording, the function is switched to “TAPE
B”, then playback starts.

9. When the [CD SYNC] key is pressed with the test tape (AMS-

100, AMS-110A) in the deck, number of space between tunes
is counted, then if AMS-110A is set, “OK” is displayed on the
fluorescent indicator tube and if AMS-100 is set, “NG” is
displayed on the fluorescent indicator tube.

10. Press the

I

/1

button to release from this mode, then cold reset

is performed.

This mode is used to check the model, destination and software
version.
Procedure:

1. Press the

I

/1

button to turn the power on.

2. Press three buttons of

x

, [PLAY MODE/TUNING MODE] and

[DISC 2] simultane-ously.

3. When this mode is activated, model and destination is displayed

on the fluorescent indicator tube.

4. Press the [DISPLAY] button to changed over between software

version and year, month, day of the software creation display
mode and model and destination display mode.

5. To release from this mode, press three buttons of

x

, [PLAY

MODE/TUNING MODE] and [DISC 2] simultaneously.

This mode can be used for error code display of CD section.
Procedure:

1. Press the

I

/1

button to turn the power on.

2. Press the [CD] key to select “CD”.
3. Press three buttons of

x

, [CD] and [DISC 1] simultaneously.

4. When this mode is activated, mechanism deck error code is

displayed on the fluorescent indicator tube.

5. Press the [GROOVE] button to changed over between optical

pick-up error code display mode and mechanism deck error
code mode.

6. Turn the [        -- EQ +         ] knob to change over display of  error

history.

When this mode is entered, mechanism deck error code is displayed
with the 10-character format on the fluorescent indicator tube.

The first digit from the left indicates:
The first digit from the left indicates which mode the error history
is. In the mechanism deck error code mode, “M” is displayed on
the fluorescent indicator tube.

The second digit from the left indicates:
(Error history No. display)
The second digit from the left indicates which order the error history
is. “1” indicates the latest error history, and each time the number
increases by one, the error history goes back to one-previous error.

The third and 4th digit from the left indicates:
(Error status display)
The third and 4th digit from the left indicates which error status is
indicated.

Display

Status

0

0

No error

0

8

Table operation time-out (Table does not move to the target

position within the specified time)

1

6

In the chucking down operation, the operation was retried

by the maximum number of times but the operation could

not be completed

1

7

In the chucking up and down operation, the reverse

recovery processing was attempted but it could not be

recovered

1

8

In the chucking up operation, the operation was retried by

the maximum number of times but the operation could not

be completed

2

0

Loading operation time-out (Table does not move to the

target position within the specified time)

2

2

As the chuck was in the ex-open status at the initialization,

the closing was attempted but could not be completed

The 5th and 6th digit from the left indicates:
(Present status display)
The 5th and 6th digit from the left indicates which operating status
when an error occurred is indicated.

Display

Status

0

1

Open completion status

0

2

From open status, the movement to chucking down position

is under way

0

3

From chucking down position, the open operation is under

way

0

4

Chucking down completion status

1

0

The chucking down operation is under way

1

1

The chucking up operation is under way

1

2

Close completion status

1

3

From close status, the ex-open operation is under way

1

4

From ex-open status, the close operation is under way

1

8

Ex-pen completion status

.           >

.            >

.           >

22

The 5th and 6th digit from the left indicates:
(Error step display)
The 5th and 6th digit from the left indicates which processing when
a trouble occurred

Display

Contents

0

1

Power OFF in progress

0

2

Initialize in progress

0

3

Oscillation stopping

0

4

From oscillation stop, oscillation starting

0

5

Stopping

0

6

Stop operation is under way

0

7

Start operation in progress

0

8

TOC read in progress

0

9

Search operation is under way

0

A

Playback operation is under way

0

B

Pause operation is under way

0

C

Playback manual search operation is under way

0

D

Pause manual search operation is under way

0

E

—

The 7th and 8th digit from the left indicates:
The 7th and 8th digit from the left indicates which operation in
progress when a trouble occurred. (Step of each processing of the
5th and 6th digits is indicated)

Number of repeat for CD playback is 5 times when the repeat mode
is “REPEAT”. This mode is used to enables CD to repeat playback
for limitless times.
Procedure:

1. Press the

I

/1

button to turn the power on.

2. Press the [CD] button to select “CD”.
3. Press three buttons of

x

, [CD] and [ENTER] simultaneously.

4. The message “LIMIT OFF” is displayed on the fluorescent

indicator tube momentarily, CD repeat 5 limit is cancelled.

The 7th and 8th digit from the left indicates:
(Motor status display)
The 7th and 8th digit from the left indicates which motor output
status when an error occurred is indicated.

Display

Status

×

0

No table motor output

×

1

Table motor forward output

×

2

Table motor backward output

×

3

Table motor break output

0

×

No loading motor output

1

×

Loading motor forward output

2

×

Loading motor backward output

3

×

Loading motor break output

The 9th and 10 th digit from the left indicates:
(Tray status display)
The 9th and 10th digit from the left indicates which target processing
when an error occurred is indicated.

Display

Status

0

1

Open operation

1

2

Close operation

1

8

Ex-open operation

When this mode is entered, optical pick-up error code is displayed
with the 8-character format on the fluorescent indicator tube.

The first digit from the left indicates:
The first digit from the left indicates which mode the error history
is. In the optical pick-up error code mode, “D” is displayed on the
fluorescent indicator tube.

The second digit from the left indicates:
(Error history No. display)
The second digit from the left indicates which order the error history
is. “1” indicates the latest error history, and each time the number
increases by one, the error history goes back to one-previous error.

The third and 4th digit from the left indicates:
(Error status display)
The third and 4th digit from the left indicates which error status is
indicated.

Display

Status

0

1

Not focused (TOC read without a disc)

0

2

GFS NG (TOC read with a disc chucked)

0

3

Start operation time-over

0

4

Defocused continuously (Defocused during TOC reading)

0

5

Q code not entered for specified time

0

6

Tracking not turned ON

0

7

Blank disc (Blank disc TOC read)

This mode is used to change over color system.
Procedure:

1. Set to the standby state.
2. Press two buttons of

m

 and

I

/1

simultaneously to change

the color system to PAL, and the message “COLOR PAL” is
displayed on the fluorescent indicator tube.

3. Press two buttons of

X

 and

I

/1

simultaneously to change

the color system to AUTO, and the message “COLOR AUTO”
is displayed on the fluorescent indicator tube.

4. Press two buttons of

M

 and

I

/1

simultaneously to change

the color system to NTSC, and the message “COLOR NTSC”
is displayed on the fluorescent indicator tube.

23

TP4 (FE)

TP5 (RFAC)

TP (DVC)

TP6

(RFDC)

TP2 (TE)

Clear RF signal waveform means that the shape “ 

◊ ” can be clearly

distinguished at the center of the waveform.

1. Connect an oscilloscope to TP70 (TE) and TP73 (DVC) on

the BD49 board.

2. Press the

I

/1

button to turn the power on.

3. Load the disc (LUV-P01) and playback the number nine track.
4. Press the  

hH

  button. (Becomes the 1 track jump mode.)

5. Confirm that the level B and A (DC voltage) on the oscilloscope

waveform.

1.

CD Block is basically designed to operate without adjustment.
Therefore, check each item in order given.

2.

Use LUV-P01 (Part No. 4-999-032-01) unless otherwise indicated.

3.

Use an oscilloscope with more than 10MW impedance.

4.

Clean the object lens by an applicator with neutral detergent when the
signal level is low than specified value with the following checks.

1. Connect an oscilloscope to TP68 (FE) and TP73 (DVC) on

the BD49 board.

2. Press the

I

/1

button to turn the power on.

3. Load the disc (LUV-P01) and actuate the focus search. (In

consequence of open and close the disc tray, actuate the focus
search)

4. Confirm that the oscilloscope waveform (S-curve) is

symmetrical between A and B. And confirm peak to peak level
within 2 ± 0.5 Vp-p.

• Try to measure several times to make sure than the ratio

of A : B or B : A is more than 10 : 7.

• Take sweep time as long as possible and light up the

brightness to obtain best waveform.

1. Connect an oscilloscope CH1 to TP71 (RFDC), CH2 to TP72

(RFAC) and TP73 (DVC) on the BD49 board.

2. Press the

I

/1

button to turn the power on.

3. Load the disc (LUV-P01) and playback the number nine track.
4. Confirm that oscilloscope waveform is clear and check if RF

signal level is correct or not.

level=1.2 

±

0.55Vp-p

symmetry

A (DC voltage)

center of
waveform

B

DVC

1 track jump waveform

TP70 (TE)

TP73 (DVC)

BD49 board

+
–

oscilloscope

RF signal waveform

VOLT/DIV : 200mV
TIME/DIV : 500ns

level : 0.75 

±

0.1Vp-p (RFDC)

1.05 

±

0.3Vp-p (RFAC)

+
–

oscilloscope

TP71 (RFDC)

TP72 (RFAC)

BD49 board

TP73 (DVC)

symmetry

S-curve waveform

within 2 

±

0.5Vp-p

A

B

+
–

oscilloscope

BD49 board

TP68 (FE)

TP73 (DVC)

24

TP70

(54 MHz)

TP182

(4.2336 MHz)

TP415

(L-OUT)

TP413

(R-OUT)

1. Connect an oscilloscope to TP308 (V-OUT) on the VMP43GY

board.

2. Connect a level meter to TP415 (L-OUT) and TP413 (R-OUT)

on the VMP43GY board.

3. Connect a frequency counter to TP70 (54 MHz) and TP182

(4.2336 MHz) on the VMP43GY board.

3. Press the

I

/1

button to turn the power on.

4. Set a test disc (HLV-402 (Part No. 8-909-870-00))
5. Set to the MPEG AV TEST mode. (Refer to the CD SERVICE

MODE (See page 19))

6. The message “MPEG AV” is displayed on the flourescent

indicator tube. Color bar signal outputs and sine-wave (1 kHz
0dB) appears.

7. Confirm that the value of level meter is 2.5 ± 2.0 dBs. (If audio

output disappear, press the [PRESET EQ]  button, and the
message “SERVICE MODE” is displayed on the flourescent
indicator tube)

8. Confirm that the value of frequency counter is 54 MHz ± 400

Hz.

9. Confirm that the value of frequency counter is 4,2336 MHz.
10. Change disc to a MP3 test disc (MP3 1kHz 0dB sine-wave is

recorded)

11. Confirm that the value of level meter is 2.4 ± 2.0 dBs.

+
–

level meter

VMP43GY board

TP415 (L-OUT)

TP413 (R-OUT)

VMP43GY board

TP70 (54 MHz)

TP182 (4.2336 MHz)

+
–

frequency counter