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7

MD mechanism deck

CD  mechanism deck

MAIN board

POWER board

CN993

CN802

Extension cable (4P)
(J-2501-042-A)

Extension cable (3P)
(J-2501-045-A)

AMP board

8

• The cold reset clears all data including preset data stored in the RAM to initial conditions. Execute this mode when returning the set to

the customer.

Procedure:
1. Press the

I/1

button to turn the power on.

2. While pressing the 

[PLAY MODE/TUNING MODE]

 and

s

 (CD) buttons, press the

I/1

button.

3. The set is reset, and displays “COLD RESET”, then becomes standby status.

•

This mode resets the set with the preset data kept stored in the memory. The hot reset mode function is same as if the power cord is plugged
in and out.

Procedure:
1. Press the

I/1

button to turn the power on.

2. While pressing the 

[PLAY MODE/TUNING MODE]

 and

HS

(CD) buttons, press the

I/1

button.

3. The set is reset, and becomes standby state.

Procedure:
1. Press the

I/1

button to turn the power on.

2. While pressing the 

[PLAY MODE/TUNING MODE]

 and

A

(CD) buttons, press the

I/1

button.

3. LEDs and fluorescent indicator tube are all turned on.
4. Press the

HS

(MD) button to enter the key test mode, and display “Key0 Vol0”.

5. Each time a button is pressed, “Key” value increases. However, once a button is pressed, it is no longer taken into account.

“Vol” value increases like 0, 1, 2 ... if turn the 

[VOLUME]

 knob clockwise, or it decreases like 9, 8, 7 ... if turn the 

[VOLUME]

 knob

counterclockwise.

6. To release from this mode, press three buttons in the same manner as step 2, or disconnect the power cord.

l m

and

M L

buttons are no longer taken into account, if it pressed within for a second.

• The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1. Press the

I/1

button to turn the power on.

2. Press the 

[FUNCTION]

 button to set the TUNER function, and press the 

[TUNER/BAND]

 button to select the band “AM”.

3. Press the

I/1

button to turn the power off.

4. When the power off, press the

I/1

button while pressing the 

[PLAY MODE/TUNING MODE]

 button, and the display of fluorescent

indicator tube changes to “AM 9k STEP” or “AM 10k STEP”, and thus the tuning interval is changed over.

9

The special jig (J-2501-149-A) is useful for checking the waveform of the BD (MD) board. The names of terminals and the checking items
to be performed are shown as follows.

GND : Ground
I+3V : For measuring IOP (Check the deterioration of the optical pick-up laser)
IOP : For measuring IOP (Check the deterioration of the optical pick-up laser)
TEO : Tracking error signal (Traverse adjustment)
VC

: Reference level for checking the signal

RF

: RF signal (Check jitter)

CN110

RF

5P connector

6P connector

VC

TEO

IOP

I+3V

GND

Mechanism deck

10

About “R”
As this unit has only a few buttons, some operations require the use of remote commander (RM-SF3MD/provided with unit: 1-476-068-11)
buttons. These operations are indicated as “R” in this manual.
Example:

MENU/NO “R”

...Press the 

[MENU/NO]

 button of the remote commander.

The IOP value labeled on the optical pick-up can be recorded in the non-volatile memory. By recording the value, it will eliminate the need
to look at the value on the label of the optical pick-up. When replacing the optical pick-up or non-volatile memory (IC171 on the BD (MD)
board), record the IOP value on the optical pick-up according to the following procedure.

Record Procedure:
1. Press the

I/1

button to turn the power on.

2. Press the 

[FUNCTION]

 button to set the MD function.

3. While pressing the

s

(MD) and

z

REC

buttons, press the

I/1

button to enter the MD test mode and display “[Check]”.

4. Press the

l

 

m

or

M

 

L

button to display “[Service]”, and press the

ENTER/YES “R”

button.

5. Press the

l

 

m

or

M

 

L

button to display “Iop Write”, and press the

ENTER/YES “R”

button.

6. The display becomes “Ref=@@@.@” (@ is an arbitrary number) and the numbers which can be changed will blink.
7. Input the IOP value written on the optical pick-up.

To select the number : Press the

l

 

m

or

M

 

L

button.

To select the digit

: Press the 

[SYNC REC]

 button.

8. When the

ENTER/YES “R”

button is pressed, the display becomes “Measu=@@@.@” (@ is an arbitrary number).

9. As the adjustment results are recorded for the step7 value. Leave it as it is and press the

ENTER/YES “R”

button.

10. “Complete!” will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become “Iop

Write”.

11. Press the 

[REPEAT]

 button to complete. “Standby” will be displayed.

Display Procedure:
1. Press the

I/1

button to turn the power on.

2. Press the 

[FUNCTION]

 button to set the MD function.

3. While pressing the

s

(MD) and

z

REC

buttons, press the

I/1

button to enter the MD test mode and display “[Check]”.

4. Press the

l

 

m

or

M

 

L

button to display “[Service]”, and press the

ENTER/YES “R”

button.

5. Press the

l

 

m

or

M

 

L

button to display “Iop Read”, and press the

ENTER/YES “R”

button.

6. “@@.@/##.#” is displayed and the recorded contents are displayed.

@@.@ : indicates the Iop value labeled on the pick-up.
##.#

: indicates the Iop value after adjustment

7. To release, press the 

[CD-MD SYNC]

 button or

MENU/NO “R”

button to display “Iop Read”. Then press the 

[REPEAT]

 button to

display “Standby”.